Featured Articles & Case Studies

Commercial Brackish Water Reverse Osmosis Units for Hemodialysis Application

In January 2009, Pure Aqua supplied to a major water treatment company in Croatia 6 Commercial Brackish Water Reverse Osmosis (BWRO) Units to produce 7500gpd at max. feed TDS 1000 PPM.

Commercial Brackish Water RO Devices

In September 2008, Pure Aqua successfully manufactured and supplied to a major water treatment company in Dubai UAE, more than 15 units of Commercial Brackish Water Reverse Osmosis (BWRO) devices. Each model was designed to produce different capacities between 1,500 GPD to 6,000 GPD at a maximum 2000 ppm feed water TDS. Reverse osmosis is often used in commercial and residential water filtration. It is also one of the methods used to desalinate seawater for industrial and commercial usage.

Seawater Reverse Osmosis System

Seawater reverse osmosis system was manufactured and supplied by Pure Aqua in March 2008 for a water treatment company in Yemen, the end user is a major shopping mall in Yemen. The total capacity is 40,000 gpd of product water used for drinking, cooling tower and irrigation purposes.

Industrial Brackish Water Reverse Osmosis Machine

Reverse Osmosis process is a pressure driven process that raises the water pressure on the high TDS (source water) side of the membrane to well above the osmotic pressure and forces the water to flow through the membrane to the low TDS (product water) side of the membrane. Reverse Osmosis also known as hyper filtration, is used to purify water and remove salts and other impurities. It is also capable of rejecting bacteria, sugars, proteins, dyes, and other constituents. RO apparatus is considered to be one of the most advanced process in the water industry.

Industrial Sea Water Reverse Osmosis Systems

In January 2009, Pure Aqua supplied 2x200m3/day Industrial Sea Water Reverse Osmosis (SWRO) Systems to a major treatment company in Azerbaijan. The complete SWRO Systems were completed with advanced PLC, colored touch panel screen, prechlorination, multi media filters, antiscalant dosing, dechlorination dosing, post chlorination, cleaning and flushing system.

Industrial Brackish Water Reverse Osmosis Apparatus

The Industrial Brackish Water Reverse Osmosis apparatus was manufactured and supplied by Pure Aqua in January 2008 for a major water treatment company in Dubai. The BWRO apparatus has a capacity of 90,000GPD product water.

Industrial Brackish Water Reverse Osmosis Plants

In December 2008, Pure Aqua successfully supplied two Industrial Brackish Water Reverse Osmosis (BWRO) plants for Coca Cola Company, Egypt. Brackish Water Reverse Osmosis Units are 634,080 GPD product water. The complete BWRO Units were supplied with pre and post treatment using advanced PLC control, colored touch panel, data acquisition software, and soft starters.

Industrial Brackish Water RO Machine

In July 2008, Pure Aqua supplied an Industrial Brackish Water RO Machine for major water treatment company in Tunisia. The capacity of this Brackish Water RO Machine is 43,000gpd product water at 4,500ppm feed TDS.

Industrial Brackish Water Reverse Osmosis Machines (total of 6,000 m3/day)

As municipalities seek new water sources to augment fresh water supplies, water reuse and reclamation are gaining in popularity. Reuse is an economic and environmentally sound solution that uses less energy and reduces overall waste compared to the alternative solution, seawater desalination. Low-pressure membranes based processes for water reuse have been proven to meet stringent standards. Their advantages include: a physical barrier to biosolids, pathogens, bacteria and nutrients; the flexibility to handle changing wastewater characteristics and plant capacities; fully automated and simple operation; a significant reduction in footprint and operating costs, delivering the lowest cost per volume treated. Low-pressure membranes are commonly used for post-secondary clarification processes for tertiary filtration, and after biological processes such as membrane bioreactors (MBRs). In September 2008, Pure Aqua successfully manufactured and supplied three Industrial Brackish Water Reverse Osmosis Machines for reclaimed water, Dubai, UAE. Brackish Water Reverse Osmosis Machines are designed to produce 3 x 2000 m3/day. The complete BWRO Machines were supplied with pre and post treatment using advanced PLC control. Pure Aqua, Inc. modular design and the use of fiber reinforced pressure vessels, Grundfos multi stage SS pump, advanced PLC control panel with colored touch panel, make these modular units one of the most compact units in the water treatment industry. The overall reverse osmosis water treatment plant design used a total of 378 reverse osmosis low-pressure membrane elements housed in 54 pressure vessel assemblies. The plant is designed as three identical stand alone operating trains which provide more operating flexibility. Reverse Osmosis also known as hyper filtration, is used to purify water and remove salts and other impurities. It is also capable of rejecting bacteria, sugars, proteins, dyes, and other constituents that have a molecular weight of greater than 150-250 Dalton. A full line of brackish and seawater reverse osmosis can be viewed at our website: www.pure-aqua.com

Industrial Brackish Water Reverse Osmosis Unit

In July 2008, Pure Aqua successfully supplied Industrial Brackish Water Reverse Osmosis (BWRO) Unit to produce 144,000 GPD of product at 77°F using (20) 8"x40" Hydranautics ESPA1 membrane elements, (4) 5M FRP pressure vessels, SS multistage Grundfos CRN pump, microprocessor based controls and a digital conductivity and ORP read out, 460V/3ph/60Hz.

Industrial Brackish Reverse Osmosis System

Pure Aqua successfully supplied a skid-mounted Industrial Brackish Reverse Osmosis (BWRO) system in 2007. The system produces 100gpm of product at 77°F using (20) 8"x40" Hydranautics ESPA1 membrane elements, (4) 5M FRP pressure vessels, SS multistage pump, microprocessor based controls and a digital conductivity and ORP read out, 460V/3ph/60Hz

Industrial Steel Tank Twin Softener and Filtration System, Caribbean

In January 2007, Pure Aqua successfully supplied an industrial steel tank twin softener system and filtration system in the Caribbean.

Twin Multi-Media Filters, Double Pass RO

In December 2006, Pure Aqua successfully supplied to a major power plant in HI, USA, a water treatment package consisting of twin Multi-Media Filters, model: MLF-48A-F-twin, Pretreatment System, Double Pass Reverse Osmosis Unit System, Electrodeionization System (EDI), Storage System, and RO cleaning system.

Industrial Desalination Systems

In December 2006, Pure Aqua successfully supplied 3 X 50TPD 440V/3Ph/60Hz & 6 X 30TPD 415V/3Ph/50Hz customized Industrial Desalination systems to the Singapore Yacht Club.

Industrial Brackish Reverse Osmosis Apparatus

In 2006, Pure Aqua successfully supplied, to a major heavy machine company, a water treatment package consisting of an Industrial Brackish Reverse Osmosis Apparatus to produce 80gpm of product from 113gpm feed, twin MLF-48A-F multimedia filters, twin ACF-48A-F activated carbon filters, antiscalant chemical dosing, and dechloronation dosing system.

Industrial Reverse Osmosis System

In 2004, Pure Aqua successfully supplied an Industrial Reverse Osmosis system for NVE Pharmaceutical Factory in New Jersey. Two-train reverse osmosis system that has a capacity of 160,000 GPD product water. The complete system was supplied with pre-chemical dosing system and membrane cleaning skid.

Industrial Reverse Osmosis Device, Peru

In 2004, Pure Aqua successfully supplied an Industrial Brackish Water Reverse Osmosis (BWRO) system for EEPSA Power Plant in Peru. The brackish water reverse osmosis (BWRO) system has capacity of 72,000 GPD of product water.

Industrial Sea Water Reverse Osmosis Unit

In 2004, Pure Aqua, Inc. manufactured and supplied an industrial seawater reverse osmosis (RO) system for the Aysir Tourism Resort in Turkey. The system consists of two independent units with a total capacity of 400 m3per day of product water. The system consists of two independent units with a total capacity of 400 m3per day of product water. Prior toPure Aqua’s involvement, RO pilot installations had been employed on thesite with limited success. Membranes became fouled and/or scaled, and the owners were not convinced that the RO equipment would provide adependable long-term water supply for the property. Shipping potable water by truck became a likely means of supplying the resort. Background Because of the Aysir Tourism Resort’s location, city or municipal water was not available. In addition, because of the resort’s close proximity to the sea,well water in the area was 40,000 ppm or more TDS. It was estimated that the resort would need as much as 400 m3per day to meet its potable and irrigation water needs. After careful analysis of the resort’s needs and location, the technical staff of Pure Aqua, Inc., a manufacturer and wholesale distributor of RO systems and components for industrial and commercial applications located in Irvine, California, decided that a seawater RO was the most effective and efficient method of obtaining the quality and quantity of water necessary for the resort’s daily operations.

Commercial Sea water Reverse Osmosis Units

Pure Aqua supplied two sea water reverse osmosis systems SWRO for a major livestock applications for a Lebanese livestock importing company; plant’s capacity is 2 x 6,000 GPD

Commercial Brackish Reverse Osmosis Devices

Pure Aqua, Inc.successfully supplied more than 30 Commercial Brackish Water Reverse Osmosis (BWRO) systems to a major real estate sector in Eastern Province of Saudi Arabia in 2003. Custom made systems capacities are between 3,000GPD and 10,000GPD of product water used for drinking and irrigation purposes. The feed water TDS is about 5,000PPM. BWRO systems were also supplied with membranes cleaning skids.

Pure Aqua Supplied 30+ Commercial BWRO Systems to Saudi Arabia1

Reverse Osmosis is a pressure driven process that raises the water pressure on the high TDS (source water) side of the membrane to well above the osmotic pressure and forces the water to flow through the membrane to the low TDS (product water) side of the membrane. Reverse Osmosis also known as hyper filtration, is used to purify water and remove salts and other impurities. It is also capable of rejecting bacteria, sugars, proteins, dyes, and other constituents.

Brent Stewart - Applications Engineer

Pure Aqua, Inc. manufactures a full line of Ultrafiltration (UF) systems. UF is a pressure driven membrane separation process that removes suspended or particulate matter (including colloids & silt) from water. The solution is far more reliable than a conventional multimedia filter that removes approximately 10-20+ micron or larger matter where a UF membrane pore size ranges from 0.01 to 0.10 micron. In addition to superior turbidity removal, UF membranes efficiently remove bacteria and most viruses.

MBR Article: Brent Stewart - Applications Engineer

The Membrane BioReactor (MBR) is a state of the art pre-engineered sewage treatment system utilizing Pure Aqua’s water treatment expertise with Toray’s submerged membrane technology. The membrane separation process eliminates the conventional sedimentation tank and allows high volumetric loading (high MLSS), resulting in a smaller footprint. The MBR can produce high quality effluent with high BOD5 removal (about 98%), complete nitrification and partial de-nitrification and achieves virtually complete TSS removal.

The MBR unit uses Toray flat sheet membranes immersed in the process tank in direct contact with the mixed liquor. Air injected from a manifold at the bottom of the membrane assembly help keep the membrane surfaces clean as well as supply oxygen for biological growth. MBR is equipped with a high level of automation, ensuring the plant’s simple operation and low maintenance cost.

Using membranes to separate sludge ensures higher quality treated water free from suspended solids. Membranes can retain activated sludge at high concentrations, resulting in more efficient BOD and nitrogen removal. The membrane has an immense number of minuscule pores delivering stable and high water permeability with minimal clogging and higher permeated water quality.

Packaged MBR STP plants are ideal for camps, hotels and/or temporary construction sites.  The high effluent quality makes the permitting process much easier (to discharge the wastewater).  Most importantly, the systems are compact and mobile.  Furthermore the process is not as operator dependent as conventional treatment.  The physical barrier of a membrane gives a much more consistent product water versus clarification that is dependent on controlling MLSS levels and types of ‘bugs’.  Regarding sludge, if it is not dewatered onsite, it can simply be trucked away, taken directly from the bioreactor.  The high MLSS and aeration rates of the MBR process acts like a digester, decreasing sludge production compared to conventional treatment.   
To see Pure Aqua’s standard line of packaged MBR equipment visit our website: http://www.pure-aqua.com/ultrafiltration-systems-1.html

TOC Article: Brent Stewart - Applications Engineer

TOC stands for, it includes all organics that contain carbon except for CO2, bicarbonate and carbonate. TOC is common on the NE coast of America where vegetative matter leaches tannins into the water giving it a tea like color. The naturally occurring TOC is typically negative charged colloids or suspended water. Ideally, RO feed water would have less than 3 ppm of TOC. Anthropogenic (man-made) sources of TOC can contribute significantly higher levels.

Oxidation of TOC in potable water supply creates THM's which is carcinogenic. Municipalities require TOC reduction before chlorination to remain under the THM target set by the EPA. There are a number of techniques for the removal or reduction of TOC including, coagulation/flocculation, activated carbon, oxidation, ion exchange, reverse osmosis and nano- filtration.

For low levels of TOC, RO/NF technology is ideal, with the combination of post UV treatment, TOC levels can be lowered to trace amounts. Nanofiltration (NF) membranes are well suited for TOC reduction while maintaining minerals in the water. The selection of RO or NF membranes is a function of the molecular weight (size) or the organic molecules, their distribution and rejection requirements. As a general rule, Hydranautics states a molecular weight of less than 200 are rejected at levels greater than 99%.

Pure Aqua, Inc. specializes in RO/NF technology, to see Pure Aqua's standard line of packaged RO equipment visit our website: http://www.pure-aqua.com/reverse-osmosis-systems.html.

Date: July,2010

NF Article: Brent Stewart - Applications Engineer

Nanofiltration is essentially identical to Reverse Osmosis, however rejection is in the approximate range of 1 nanometer, hence the name 'Nanofiltration'. A general rule of thumb to remember the relative size and rejection of different membranes and technology is to start with RO and multiply by 10; RO is in the range of 0.001 microns (1 micron = 1/1000 mm, 1 inch = 25.4 mm), Nano, 0.01, UF, 0.1 and MF, 1 micron. Nano membranes will remove some soluble salt and metal ions and larger organic molecules (200-400 are well rejected).

The technology is well suited for TOC (& color) and hardness reduction, while maintaining other dissolved ions in the water. Dissolved salt rejection varies from 20% - 98%, hardness is well rejected as calcium and magnesium act like a larger molecule do to their multivalent charge and the polarity of water (the ions attract water molecules forming a sheath around the ion). Monovalent anions are poorly rejected 20-80%, while divalent ions are rejected up to 98%. Another application for NF membranes is radium removal, rejection is approximately 85%. One of the biggest advantages of NF membranes is operating pressures, they run at much lower transmembrane pressures (50-225 PSI) compared to RO.

Pure Aqua, Inc. specializes in RO/NF technology, to see Pure Aqua's standard line of packaged RO equipment visit our website: http://www.pure-aqua.com/reverse-osmosis-systems.html.

Date: July,2010

Ultrafiltration (UF) Water Treatment Systems

In July 2012, Pure Aqua successfully designed and manufactured four (4) Ultrafiltration (UF) water treatment systems to provide potable water for the construction phase of two remote mines in Panama.  The most challenging factor was purifying feed water from local rivers since they were high in organics, suspended solids, and iron. The Ultrafiltration Systems produced 3 m3/h at a maximum 300 PPM feed water TDS. They came complete with a PLC control panel with color touch screen, supply pumps, coagulant dosing, flocculation dosing, clarification, break tank, booster pumps, multimedia filter, activated carbon filter, Ultrafiltration, oil absorbing filters, 0.2 micron filter, UV and post disinfection (chlorine).

Pure Aqua, Inc. manufactures a full line of Ultrafiltration Systems. UF is a pressure driven membrane separation process that removes suspended or particulate matter (including colloids & silt) from water. This solution is far more reliable than a conventional multimedia filter, which removes approximately 10 micron or larger matter, where a UF membrane pore size ranges from 0.01 to 0.10 micron. In addition to superior turbidity removal, UF membranes efficiently remove bacteria and most viruses.

Plant Overview

Reverse Osmosis Electrodeionization (RO-EDI) Water Treatment Systems

In July 2012, Pure Aqua designed and manufactured Reverse osmosis Electrodeionization (RO-EDI) Water Treatment Systems to provide purified water for the Iraqi Government.  The 10 m3/h system was designed with 100% redundancy (two identical trains).EDI removes ionized and ionizable species from brackish water using electrically active media and electrical potential (DC power) to affect ion transport.  By using this type of purification technology, caustic and acidic types of chemicals are not required.  The water which has been treated by RO-EDI has typically exceeded customer’s high-purity standards. The (RO-EDI) Water Treatment System came complete with a PLC with color touch screen (remote I/O), feed pumps, backwash pumps, multimedia filters, activated carbon filters, UV, break tank, booster pumps, double pass RO, UV, break tank, booster pump, EDI, Stainless steel distribution tank, distribution skid (pump, 0.2 micron filter, and UV.

System Overview

Twin Alternating Water Softener

In December 2011, Pure Aqua designed and manufactured a Twin Alternating Water Softener with 48” epoxy lined steel tanks, 52” brine tank and electrically actuated ball & butterfly valves for a major company in Saudi Arabia. Feed water to the Twin Alternating Softener was brackish well water. Its objective was to reduce the hardness in the water to drinking standards. Each Softener produced 223,200 GPD per day. It came ready with a PLC control panel with a touch screen.

System Overview

• Potable water
• Airplanes washing
• Contact process water
• Boiler & reactor feed and make-up water
• Cooling tower make-up water
• Manufacturing process water
• High purity water
• Large laundry and restaurant facilities
• Commercial buildings
• Protection of heat transfer elements and spray nozzles
• Pre-treatment for reverse osmosis or deionizer systems
• Beverage Industry
• Groundwater remediation
• Spot Free Wash

Seawater Treatment Plant

Pure Aqua created preliminary engineering designs and layouts for a Seawater Treatment Plant in Peru. Feed water to the plant is seawater beach well. This Seawater Treatment Plant came complete with an advanced PLC, cleaning and flushing systems, coagulant, pre & post de-chlorination, and anti-scalant dosing systems. The plant design was based on high rejection TFC Spiral wound low fouling membranes. The plant will produce 1.4 million gallons per day of drinking water at a maximum 45,000 PPM feed water TDS.

Reverse Osmosis Desalination Process
The primary element of desalination is the Reverse Osmosis Process. It consists of a High pressure pump followed by an Energy Recovery turbine and the Reverse Osmosis TFC Membranes module.

High pressure pump
Before entering the seawater reverse osmosis membranes module, clean and filtered seawater is pressurized by the High Pressure Pump typically between 900 and 1000 PSI, depending on the temperature and the (TDS) salinity of the water.

Energy Recovery Turbine
The pressure drop over the RO membranes is about 15-20 PSI, depending on the number of membranes per pressure vessel, so the concentrate is still at a high pressure. This high pressure can be utilized and to reuse the energy from the concentrate flow. The concentrate is directed to the energy recovery turbine, where it directly transfers its energy to part of the system inlet water.

Spiral Wound Seawater Reverse Osmosis membranes
The most commonly used RO membranes used in reverse osmosis treatment plant are spiral wound Thin Film Composite (TFC). They consist of a flat sheet sealed like an envelope and spirally wound.

Read more: http://www.pure-aqua.com/industrial-desalination-swi-series.html

Plant Overview

Industrial Water Maker & Industrial Brackish RO Unit

In May 2009, Pure Aqua successfully manufactured and supplied a Double Pass Industrial Water Maker followed by an Industrial Brackish Water RO Unit to produce drinking water with Boron content less than 1ppm for a military base at the Oman Ministry of Defense. The Industrial Water Maker was selected from our SWI Series, while the Industrial Brackish RO Unit was selected from our RO-400 Series. These units came complete with an advanced PLC, cleaning and flushing systems, coagulant, pre & post de-chlorination, and anti-scalant dosing systems. Feed water to the system is processed water and seawater well. The system design was based on high rejection TFC Spiral wound low fouling membranes. The Water Maker produced 188,000 GPD at a maximum 45,000 PPM feed water TDS while the Brackish RO Unit produced 130,000 GPD with a 100 ppm feed water TDS. From its initial start-up in May 2009, the units have been running smoothly with minimal trouble-shooting. As a result, the military base has a reliable and steady supply of drinkable water at a cost far less than shipping water to the site.

Plant Overview

Industrial Reverse Osmosis Kit

In May 2007, Pure Aqua successfully supplied an Industrial Reverse Osmosis Kit to produce 200 GPM of product from 250 GPM feed, antiscalant chemical dosing, prechlorination and chemical dosing, acid injection dosing, and dechlorination dosing systems. Feed water to the package is processed water with a raw water TDS of about 1,500 PPM. The package design was based on a high rejection TFC spiral wound low fouling membrane. The Reverse Osmosis Kit was selected from our RO-500 Series, model # BW-360K-8680-3 It produces 200 GPM of drinking water with TDS less than 100 mg/L. The Reverse Osmosis Package consists of 5-micron cartridge filters to reduce feed water Silt Density Index (SDI) and to limit the SS to 5-micron size. TFC spiral wound membranes have a recovery rate of 80% with an advanced microprocessor control panel and cleaning system.

In any reverse osmosis system or kit, pre and post treatment must be included to make the system ideal and trouble free.

Plant Overview

Industrial Seawater RO Units

Pure Aqua designed and manufactured 3 Industrial Seawater RO Units for a textile company in Pakistan producing drinking water less than 350 PPM TDS. Each Seawater Unit produced 250,000 gallons per day with a maximum 40,000 PPM feed water TDS. Feed water to the units are from a seawater beach well. All three Industrial Seawater Units were selected from our SWI Series and they came complete with an advanced PLC, multimedia prefiltration, FRP tanks, prechlorination, dechlorination, acid dosing, antiscalant, and post chlorination dosing systems. From their initial start-up in February 2008, the units have been running smoothly with minimal trouble-shooting. As a result, the textile company has a reliable and steady supply of drinkable water and for process water at a cost far less than shipping water to the site.

Plant Overview

Industrial Reverse Osmosis Apparatus

In November 2007, Pure Aqua successfully supplied a skid-mounted Industrial Reverse Osmosis Apparatus to a major textile mill in Pakistan. This apparatus was designed to produce 70 m3/hr product at 77F using (72) 8” x 40” FILMTEC BW30-440i membrane elements, (12) FRP pressure vessels 6 elements per each vessel, SS multistage pump, PLC based controls and a digital conductivity and ORP read out, 380V/3ph/50Hz. Feed water to the unit is from a bore-well with a raw water TDS of about 4273.13 PPM. The unit design was based on high rejection TFC spiral wound membranes. The BWRO Unit was selected from our RO-500 series, model # BW-500K-12680-5. It consists of a 5-micron cartridge filters to reduce feed water Silt Density Index (SDI) and to limit the SS to 5-micron size and an advanced PLC control panel with a touch panel screen. Pretreatment of raw water includes multimedia filters to remove suspended solids and reduce turbidity, dechlorination dosing system to remove the feed chlorine, acid dosing system to reduce the pH of the feed water and control the LSI, Biocide dosing system to control the biological growth, antiscalant dosing to minimize the precipitation of sparingly soluble sulfate, and Caustic Soda dosing system to adjust the pH of the product water.

Plant Overview

Industrial BWRO Systems

Pure Aqua, Inc. designed and manufactured Two Industrial BWRO Systems for an open pit mine in Canada. The objective was the removal of Nitrate and Selenium to meet stringent environmental discharge limits. The feed capacity was 1.7 MGD, split into two identical systems at a maximum 1,000 ppm feed water TDS. These Industrial BWRO Systems were selected from our RO-500 series and came complete with an advanced PLC, cleaning and flushing systems, and anti-scalant dosing systems. They included two high pressure stainless steel pumps, modified to produce 600 gallons per minute. The time sensitive project was delivered in 10 weeks.

Plant Overview

Multi-Media Filtration Units

In December 2006, Pure Aqua successfully supplied a major hotel in Kuwait with an epoxy coated steel tank multi-media filtration units to remove sediment down to the 10 micron range. The multi-media filtration units were selected from our MF-1000 Series. MLF-42A uses a 42” diameter tank to handle a minimum flow rate of 97gpm.  MLF-36A uses a 36” diameter tank to handle a minimum flow of 71gpm.  Each unit is designed with an automatic stager, 5 metal diaphragm valves, differential pressure switch & gauge, air release valve, flanged connection, sample valves, and in/out pressure gauges. Each system uses the following grades of media: Anthracite, Silica Sand, Garnet, and Gravel (Different layers). Since the time of its start-up in February 2007, the filtration systems have been running smoothly with minimal trouble-shooting.

Plant Overview

Twin Alternating Activated Carbon Filtration System

In April 2013, Pure Aqua successfully supplied ExxonMobil in Texas, USA with a skid mounted Twin Alternating Activated Carbon Filtration System to remove chlorine from the water. The twin alternating activated carbon filtration system is composed of epoxy coated steel tanks designed with an advanced PLC control panel, chlorine analyzer, butterfly actuated valves, PVC sch 80 face piping, high quality acid washed coconut activated carbon media, differential pressure switch & gauge, in/out pressure gauges, and drain line flow controls (DLFC). The system was selected from our MF-1000 Series. ACF-72A uses a 72” diameter tank to handle a flow rate of 150 GPM.  Since its startup, the filtration system has been running smoothly with minimal trouble-shooting.

For satisfactory results, the system utilized the following grades of media: Acid Washed activated Carbon and Gravel. Acid washed activated carbon strives to reduce the undesirable tastes, odors, and colors present in many chlorinated water supplies. For many years, acid washed activated carbon has been successful in reducing free chlorine from water supplies. It requires periodic backwashing to remove accumulated suspended matter and to re-grade the filter bed. Activation is carefully controlled to produce exceptionally high internal surface area with optimum pore size for the adsorption of a broad range of high and low molecular weight organic contaminants.  To obtain maximum efficiency of the activated carbon in the adsorption process, it is recommended to have the greatest possible surface area in the smallest practical volume. Gravel is a naturally occurring, river washed, glacial deposit product. It contains excellent chemical properties such as high silica content and low soluble calcium, magnesium and iron compounds. It has a highly spherical shape that encourages good flow and equal distribution in support beds. Gravel is low in soluble impurities and it will maintain the quality of the treated water, especially in softeners. Gravel comes in three grades: coarse, medium, and fine. When loaded in the tanks, it must be loaded by grade: First coarse, then medium, then fine.

Activated Carbon Filtration Systems are great sources for removing odor, chlorine, color, and taste from water. These systems utilize granular activated carbon to carry out these tasks. Granular activated carbon (GAC) is a good media to reduce natural and synthetic soluble organic compounds from water and wastewater. However, it is considered to be costly and expensive media and periodically must be replaced. Finding ways to maximize the performance and life of carbon can save significant amount of money. Is GAC or Carbon Filter represent the only way to remove or reduce color from water?

Activated carbon is the most common method of removing odor, chlorine and color from water. However, it is not always the most appropriate method to remove color. Sometimes the color in water comes from silt or very small particles of suspended solids and not from dissolved solids. The particles imparting the color are so small they cannot be seen with the naked eye, but they do exist. If color results from these small particles, activated carbon is not the right way to remove it. A multi-media filter or dual layer filter is the most efficient and most economical selection.

It is always a good design to protect your activated carbon media filter by using a multi-media filter as a pretreatment, this will prolong the life of your GAC media, and saves your money.

System Overview

Duplex Multi-Layer Filtration System

In April 2013, Pure Aqua successfully supplied a major water treatment company in Mexico with a duplex multi-layer filtration system to reduce suspended solids and turbidity in water. The duplex multi-layer filtration system is composed of epoxy coated steel tanks designed with an advanced PLC control panel, butterfly actuated valves, PVC sch 80 face piping, high quality multi-media, differential pressure switch & gauge, in/out pressure gauges, and drain line flow controls (DLFC). The system was selected from our MF-1000 Series. MLF-60A uses a 60” diameter tank to handle a flow rate of 200 GPM.  Since its startup, the filtration system has been running smoothly with minimal trouble-shooting.

For satisfactory results, the system utilized the following grades of media: Anthracite, Silica Sand, and Gravel. Anthracite is a quickly evaporating coal that contains a larger amount of fixed carbon than any other type of coal. It is recommended as a filter medium to remove lighter weight turbidity and the extra silica found in water. Also it allows for extreme savings on backwash water due to its low bulk density. Silica Sand is one of the most well-known type of sand found on our plant today. It takes its name from silicon dioxide (SiO2). Silica is used as a filtration bed for many particulates. It is free from lime and is chemically inert. Silica comes graded in various ranges and is used as a filtration medium or underbedding depending on practical size and application. Gravel has a highly spherical shape that promotes good flow and even distribution in support beds. Gravel is low in soluble impurities and it will maintain the quality of the treated water, especially in softeners. Three layers are recommended in graded support beds.

Multi-Layer Filters are commonly used to reduce or remove turbidity and suspended solids from well water, surface water, or seawater, and also could be used for some applications of wastewater. To remove turbidity and suspended solids to a smaller than 30 microns, this requires filters with either two or three layers of filtration media. These are referred to as dual-media filters or multi-media filters or multi layers filters. When designed and sized properly, these filters can remove turbidity and suspended solids as small as 10 micron.

Multi-Layer Filters are typically used for:

• Drinking water
• Irrigation water
• Storm water
• Surface water
• RO pretreatment.
• Ion exchange pre treatment
• Cooling water
• Swimming pool water
• Water in fountains and other water features

Industrial Skid Mounted Filtration System

In April 2013, Pure Aqua successfully manufactured and supplied to a major wastewater treatment site in the USA with a skid mounted twin alternating multi-media water filtration system to remove suspended solids from well water. The multi-media filtration system comes complete with an advanced PLC,  ASME coded and stamped tanks, twin alternating arrangement, pressure transmitters, butterfly SS actuated valves with battery backup, stainless steel face piping, in/out pressure gauges, and drain line flow controls (DLFC). The system was selected from our MF-1000 Series. MLF-84A uses an 84” diameter tank to handle a flow rate of 120 GPM.  Since its startup, the filtration system has been running smoothly with minimal trouble-shooting.

For satisfactory results, the system utilized the following grades of media: Anthracite, Silica Sand, and Gravel. Anthracite is a high quality semi-metallic coal discovered back in 1790 in Pennsylvania, USA. It is the purest type of coal and claims the highest level of coalification amongst all other coals.  Anthracite claims the largest carbon and energy content along with the fewest impurities such as moisture, volatiles, and ash. It is a filter medium that is recommended to remove the extra silica found in water and discards lighter weight turbidity. Anthracite is known to have larger service flows and lasts longer amongst other comparable filters. Its exclusive density permits it to be mixed with other multi-media filtration media. Its consistent and outstanding performance is acquired by paying close attention to purity, hardness and graduation. Silica Sand takes its name from silicon dioxide, a chemical compound. It is specifically graded for water filtration systems and can be used as a filtration medium or underbedding. It is hard, dense, and sturdy grains prevent degradation when being handled and used. Silica Sand comes in the following particle shapes: angular to sub-angular and round to sub-round. These shapes encourage a positive flow and equal distribution. Depending on its particular size and application. It is widely used in residential, municipal, and industrial applications. But before being applied, silica sand must meet the following specifications: purity, porosity, acid solubility, and specific gravity. Gravel is an efficient way of water filtration. It consists of granule to boulder sized rock fragments deposited and piled on by rivers and waves. This naturally occurring rock denies the passage of debris in water and only permit water to flow through. It’s spherical shape allows positive water flow with equalized distribution in filtration beds. High silica content, low soluble calcium, iron, and magnesium compounds are amongst gravel’s outstanding chemical properties. To accomplish proper filtration, the grades of gravel have to be loaded into the tanks in the following order: coarse grade, medium grade, fine grade.

A multi-media filtration system is the most efficient and most economical selection. It is typically used for Drinking water, storm water, irrigation water, cooling water, swimming pool water, water fountains, reverse osmosis pre-treatment, and ion exchange pre-treatments.

System Overview

Multi-Media & Activated Carbon Filtration Systems

In February 2013, Pure Aqua successfully manufactured and supplied a skid mounted multi-media and activated carbon filtration package to a major hotel in Jordan to remove chlorine and suspended solids from well water. The filtration package is composed of multimedia and activated carbon FRP tanks, an advanced PLC control panel, PVC butterfly actuated valves, differential pressure switch & gauge, in/out pressure gauges, and drain line flow controls (DLFC). The multi-media filter was selected from our MF-600 Series. MLF-48A-F uses a 48” diameter tank.  The activated carbon filter was also selected from our MF-600 Series. ACF-63A-F uses a 63” diameter tank. Both were chosen to handle a flow rate of 145 GPM.  Since its startup, the filtration package has been running smoothly with minimal trouble-shooting.

For satisfactory results, the package utilized the following grades of media: Silica Sand, Anthracite, Activated Carbon, and Gravel. Silica Sand is graded specifically for water filtration plants. It can be used in municipal, industrial or residential applications for sediment filtration. Silica Sand occurs naturally and exhibits outstanding chemical properties such as a high silica content, low soluble calcium, magnesium, and iron compounds which suit industry standards. It has been utilized both nationally and internationally because of its high quality, preferred chemical properties, color, and wide range of precision sizing. Anthracite is a black, shiny coal that has a unique density that permits it to be used in multimedia filters. It is employed as a filter medium to eliminate the extra silica and light weight turbidity found in water. Since the ancient times, anthracite has been utilized for water treatment because of its large carbon content and small volatile matter. Activated Carbon is used to remove odor, chlorine, and color from water as well as controlling the taste. It removes basic impurities such as debris from water to questionable contaminants such as viruses and soluble gases. Activated carbon easily removes particles that are greater than 0.5 microns. Gravel is usually the first stage of particulate filtration. Its spherical shape allows the incoming water flow to be equally distributed over the entire filtration bed. Whether the water flow is coming into a small section or not, it will still stretch throughout the gravel into numerous spreadable areas within the gravel bed. Gravel will only allow particles that are smaller than its gaps to flow through and carry on to the next stage of particulate filtration. The larger particles that didn’t pass through are stripped out and left either above or within the gravel until they are broken down enough to be able to flow through the gaps or removed completely during occasional flushings or additional types of cleaning. Gravel comes in three grades: coarse, medium, and fine and must be loaded into the tanks in that same order.

Multi-media filters are manufactured to get rid of suspended particles from water and mainly serve feed water that has a turbidity of up to 20 NTU.  In the filtration process, tiny particles progress down to smaller and finer media levels. The gaps within these media catch particles down to 10 microns. The larger particulates that didn’t pass through are caught on top of the filtration bed. Multi-media filters are usually backwashed when there is an increase in pressure differential to approximately 10-12 PSI or when a timer begins. When a backwash is in progress, water is guided upward through the filter at approximately 12-15 gpm/ft² for about ten minutes, raising the media. This also cleans and separates the dirt particles which are discharged into the backwash water then to the drain.

Activated carbon filtration systems utilize carbon because it has a little electro-positive charge added to it, which draws attention to chemicals and impurities. When water flows over the positively charged carbon surface, the contaminants negative ions are pulled toward the surface of the carbon granules. Activated carbon water filters are utilized before water is run through a reverse osmosis unit to remove impurities, odors, and colors. The amount of carbon in the unit and the length of time the contaminants stay in contact with the carbon are the two most significant factors affecting the efficiency of activated carbon filtration. The more carbon applied, the more contaminants are eliminated.

System Overview

Industrial BWRO Unit

In March 2013, Pure Aqua, Inc. successfully manufactured and supplied an industrial BWRO unit to a major water treatment company in the Philippines. The objective was to produce drinking water with less than 500 ppm. The product water capacity was 57,000 GPD from a well water of approximately 5,000 ppm TDS. This industrial BWRO unit was selected from our RO-400 series and came complete with an advanced microprocessor control panel, a high pressure stainless steel pump, dechlorination, and antiscalant dosing systems. Since its initial startup, the industrial BWRO unit has been running smoothly with minimal trouble-shooting.

The average reverse osmosis unit is composed of pretreatments such as multimedia and activated carbon filters, a water softener with brine tank, the reverse osmosis system with membranes, and a UV sterilizer post-treatment. The unit employs the reverse osmosis process to carry out the task of water purification. Reverse osmosis is a pressure-driven method utilized to eliminate inorganic dissolved solids like salt from water through a very fine membrane. Excessive pressure is applied via a high pressure pump to force waters generating from lakes, wells, rivers, etc. against the surface of the fine membrane blocking salt, suspended particulate matters, minerals, ions, and other impurities from passing through. The result is the emergence of fresh, potable water on the lower-pressured side. The blocked salt, impurities and other contaminates are released into the brine stream and then discharged down a drain.

Plant Overview

Commercial Seawater RO Machine

In March 2013, Pure Aqua successfully manufactured and supplied a commercial seawater RO machine to a major tanker company in Singapore. The commercial seawater RO machine came complete with an advanced microprocessor control panel, multimedia filter, and an antiscalant dosing system. It was designed to produce 4,700 GPD at a seawater feed up to 40,000 PPM TDS. The SW-4.7K-504 commercial seawater RO Machine was selected from our SWC Series. From its initial start-up, it has been running smoothly with minimal trouble-shooting. As a result, the company has had a reliable and steady supply of fresh, purified water at a cost far less than shipping water to the site.

Reverse Osmosis is a simple process that involves eliminating a numerous amount of salt and other minerals from water sources that are highly non-consumable. A high pressure pump is utilized to combat the osmotic pressure of a natural process called “Osmosis”. Osmosis naturally moves salt through a semi-permeable membrane from an area with low saline concentration to an area with high saline concentration. Its purpose is to achieve an equal amount of saline concentration on both sides. This is when reverse osmosis comes in to reverse this process. The process begins by passing seawater through several pre-filters to eliminate particles and solids from the water. From there the water continues on into a water softener tank which takes out the hardness so the membranes within the system won’t be subject to any damage. It then goes through the actual machine where it passes through semi-permeable membranes. At this stage, the membranes take out the particles that the pre-filters bypassed. The membranes only allow water to flow through while blocking salts, minerals, and other impurities from carrying on. This results in the emergence of purified, potable water on the permeate side while Salt, minerals, and other impurities are flushed down the drain from the concentrate side.

System Overview

Industrial High Brackish Reverse Osmosis System

Introduction

In December 2012, Pure Aqua, Inc. successfully manufactured and supplied an industrial high brackish reverse osmosis system to a major water treatment company in Lebanon. The objective was to produce drinking water with less than 500 ppm. The product water capacity was 130,000 GPD from a well water of approximately 11,000 ppm TDS. The industrial high brackish reverse osmosis system was selected from our RO-400 series and came complete with an advanced PLC, two high pressure stainless steel pumps, pre and post treatment, and VFD. Since its initial startup in January 2013, the industrial high brackish reverse osmosis system has been running smoothly with minimal trouble-shooting.

Brackish reverse osmosis systems remove salt and most other impurities found in water.  They lend themselves to be used in places where consumable water is salty and contains dissolved minerals which can be challenging to be taking out by any other methods. Brackish reverse osmosis systems utilize the process of reverse osmosis to purify salty water. A high pressure pump is used to force water molecules through a semi-permeable membrane leaving salt and other contaminants behind. Potable water is collected from the permeate side of the membrane, and water containing the concentrated salt and other impurities are discharged down the drain from the concentrate side. The average brackish reverse osmosis system consists of multimedia and activated carbon filters, a water softener with brine tank, the RO system with membranes, and a UV sterilizer post-treatment.

Brackish water is known as the water with a level of salinity or total dissolved solids between freshwater and seawater. Creeks or river areas are good examples where you can find brackish water. An estuary is a location where salty water and fresh water mix, typically around the opening of a river, and many industrial and commercial water treatment facilities pull water from such locations. These brackish water reverse osmosis systems are for commercial and industrial systems that need high rejection and operating pressures as low as 200 psig are recommended.

Plant Overview

BWRO Machine

In January 2013, Pure Aqua, Inc. successfully manufactured and supplied a BWRO machine to a major company in Ghana. The objective was to produce drinking water with less than 500 ppm. The product water capacity was 24,000 GPD from bore hole well water of approximately 3,000 ppm TDS. The BWRO machine was selected from our RO-300 series and came complete with microprocessor control panel, high pressure stainless steel pump, pre and post treatment, and cleaning systems. Since its initial startup in March 2013, the BWRO machine has been running smoothly with minimal trouble-shooting.

A brackish water reverse osmosis (BWRO) machine accomplishes the removal of salts, contaminants and other impurities through a process called “reverse osmosis”. Reverse osmosis is a pressure-driven process utilized to eliminate salt from water through a semi-permeable membrane. A high pressure pump applies extreme pressure to brackish water against the surface of the semi-permeable membrane forcing the transport of salt, suspended particles, minerals, ions, and other impurities across the membrane resulting in the emergence of potable water on the lower-pressured side. Salt, contaminates, and other impurities and are dumped into the brine stream and then flushed down a drain.  The average brackish reverse osmosis machine consists of pretreatments such as multimedia filters to remove particulates, activated carbon filters to remove chlorine, odor and color, and green sand filters to remove iron from water. Also it can include a water softener with brine tank to remove hardness, and a UV sterilizer to kill bacteria.

Pure Aqua RO-300 Series modular BWRO machine for brackish water treatment:

The RO-300 platform is a range of pre-engineered RO machines including pre and post pretreatment components like multi-media filters, carbon filters, ozonation, water softeners, ultraviolet sterilizer, chemical dosing systems, tanks, and pumps for integrating a full-scale configurable water treatment system. With many years of advanced engineering and manufacturing experience worldwide, Pure Aqua offers superior standardization and optimization of RO systems and machines. This standardization was based on the best value engineering taking into consideration highest quality components and well-engineered process.

Pure Aqua RO-300 RO machines are manufactured in USA and sold worldwide with components and design features to address and facilitate specific certification, operational and maintenance needs of the region; such as electrical supply, weather conditions, safety and environmental issues. This would enable our customers to obtain a robust, state of the art BWRO water system delivered to you at the shortest time.

For further information about our RO-300 series BWRO machines, please visit our website: http://www.pure-aqua.com/commercial-brackish-water-ro-300.html

Plant Overview

Water Filtration Plant

In March 2013, Pure Aqua successfully manufactured and supplied a water filtration plant to a major hotel in Ghana to remove particulates, chlorine, organics, odor, hardness, and bacteria from well water. The water filtration plant is composed of multimedia, activated carbon, water softener, UV sterilizers, and cartridge filtration. The multi-media and activated carbon filters were selected from our MF-600 Series and both used 42” diameter FRP tanks. Both came with duplex arrangements, aquamatic valves and digital stagers along with interconnecting piping and wiring. The twin alternating water softener was selected from our SF-110F series, model # WSF48-1200-4-T. This twin alternating arrangement also came with aquamatic valves and digital stagers along with interconnecting piping and wiring. All were chosen to handle a flow rate of 120 GPM.  Since its startup, the water filtration plant has been running smoothly with minimal trouble-shooting.

For satisfactory results, the plant utilized the following grades of media: Silica Sand, Anthracite, Activated Carbon, and Resin. Silica Sand is a highly effective filter media because of its capability of holding back precipitates containing impurities. It is specifically graded for water filtration plants. Silica Sand’s fundamental characteristics include Filter sand size, hardness, and angularity. These characteristics guarantee proper filtration. Anthracite is a black coal that has been recognized as a potential water treatment since the ancient times. When it is crushed, Anthracite makes an exceptional medium density filtration media. Its cracked shape allows some sediments to deeply penetrate into the bed. Anthracite is known to have extensive filter runs and fewer head loss. Also there is a reduction in backwash rates. Activated Carbon is a black firm element that is similar to powdered and granular charcoal. It is consists of many pores with a very large surface area. Activated Carbon is known to effectively remove chlorine and some heavy metals bound to organic molecules. It has been found that activated carbon eliminates much more contaminants from water than regular carbon. Resin is an insoluble support structure that usually comes in the form of small beads created from an organic polymer substrate. Resin’s structure is highly porous on the surface which are sites with easily trapped and released ions. They are widely used in processes such as separation, purification, and decontamination.  Water softening and water purification are common examples of Resin.

Multi-media filters are manufactured to do away with suspended particles from water and service feed water with a turbidity of up to 20 NTU.  In the filtration process, small particles descend down to tinnier and finer media levels. The cracks within these filters catch particles as low as 10 microns. The blocked larger particulates are caught on top of the filtration bed. At times multi-media filters are backwashed when there is an increase in pressure differential or when a timer begins. Activated carbon filtration systems use carbon draws attention to chemicals and impurities. Carbon has a little electro-positive charge added to it, so when water passes over the positively charged carbon surface, the contaminants negative ions are drawn toward the surface of the carbon granules. Activated carbon water filters remove impurities, odors, and colors from water. The two most significant factors affecting the efficiency of activated carbon filtration is the amount of carbon in the system and the amount of time the contaminants stay in contact with the carbon.

A Water Softener is used to remove minerals that cause hardness in water. Having hardness in water can cause negative outcomes such as clogged pipes, damaged boilers, and heat exchangers. Industrial, commercial and household water systems suffer from lime scale deposits as a result of hard water. Lime scale build-up can cause pipes to be clogged and reduces the efficiency of hot boilers, tanks, and laundry machines. Water softener systems improves the work and extends the life span of laundry machines, pipelines,  solar heating systems, air conditioning units and many other water-based applications.

The superior selective design of all above water equipment, made our water filtration plant robust, superior quality.

Plant Overview

Ultrafiltration Pilot System

In May 2013, Pure Aqua, Inc. successfully manufactured and supplied an ultrafiltration Pilot system to a membrane manufacturer for Title 22 certification. Title 22 is the State of California’s stringent standard for treatment/disinfection of wastewater for non-potable reuse and discharge. The certification is considered the global standard for water reuse. MF/UF is the best available technology for wastewater reuse projects.

The pilot system was designed for tertiary treatment of secondary wastewater (treated/clarified sewage). The 30 gpm system consisted of one MF module; major components include feed & backwash pumps, compressor, integrated CIP and chemically enhanced backwash (CEB). The pilot required additional instrumentation including turbidity monitors, particle counters, air flow transducer, pH, etc. The touch screen (HMI) included data logging and additional screens for operator adjustable set points. The global membrane manufacture is able control and monitor the unit remotely from a PC utilizing Siemens WinCC software and a mobile (cellular) connection.

System Overview

Multi Cell Filtration Plant

In January 2013, Pure Aqua successfully supplied a multi cell filtration plant to the Ministry of Oil in Iraq. The plant consisted of multimedia filters, air blowers, and skid mounted back wash pumps. It also came complete with epoxy coated steel interconnecting piping all of which are controlled by an advanced PLC.  The plant was selected from our MF-1000 Series. MLF-84A uses an 84” diameter tank to handle a total flow rate of 1500 GPM.  Since its startup, the plant has been running smoothly with minimal trouble-shooting.

For satisfactory results, the plant used the following grades of media: Anthracite, Silica Sand, and Gravel. Anthracite is a coal that consists of a high volume of fixed carbon than any other known type of coal. It is recommended as a filter medium because of its cracked shape which allows some sediments to deeply penetrate into the bed. Anthracite is widely recognized for its lengthy filth filter runs, less head loss, and reduced backwash rates. It is tasked with removing lighter weight turbidity and the extra silica found in water. Silica Sand is a popular sand recognized globally. Silica Sand or silicon dioxide (SiO2) is utilized as a filtration bed for many particulates. It is naturally free from lime, chemically inert, and comes graded in various ranges for use in underbedding. Gravel is made up of unconsolidated rock fragments that encourages good flow and equal distribution in support beds. Gravel claims a very low amount of soluble impurities and maintains the quality of the treated water, especially in softeners. Three layers are encouraged in graded support beds.

Multi-Cell Filters are commonly used to lower or eliminate turbidity and suspended solids from well water, surface water, or seawater, and also could be utilized for some applications of wastewater. Two or three layers of filtration media are required to eliminate turbidity and suspended solids to a smaller than 30 microns. These are referred to as multi-media filters, dual-media filters or multi layers filters. Filters can remove turbidity and suspended solids as small as 10 micron if they are designed and sized properly. Multi-layer filters are typically used for drinking water, irrigation water, surface water, and to pretreat RO Systems.

System Overview

Commercial Seawater Reverse Osmosis Unit

In May 2013, Pure Aqua successfully manufactured and supplied commercial seawater reverse osmosis units to a major company in Angola. The units came complete with an advanced microprocessor control along with pretreatments consisting of multimedia filters and an antiscalant dosing system. The SW-5.6K-604 unit was designed to produce 5,600 GPD while the SW-3.0k-304 was designed to produce 3,000 GPD both at a maximum 42,000 PPM feed water TDS. The units were selected from our SWC Series. From its initial start-up, the units have been running smoothly with minimal trouble-shooting. As a result, the company has had a reliable and steady supply of fresh, purified water at a cost far less than shipping water to the site.

Reverse Osmosis is a simple process that involves eliminating a numerous amount of salt and other minerals from water sources that are highly non-consumable. A high pressure pump is utilized to combat the osmotic pressure of a natural process called “Osmosis”. Osmosis naturally moves salt through a semi-permeable membrane from an area with low saline concentration to an area with high saline concentration. Its purpose is to achieve an equal amount of saline concentration on both sides. This is when reverse osmosis comes in to reverse this process. The process begins by passing seawater through several pre-filters to eliminate particles and solids from the water. From there the water continues on into a water softener tank which takes out the hardness so the membranes within the system won’t be subject to any damage. It then goes through the actual machine where it passes through semi-permeable membranes. At this stage, the membranes take out the particles that the pre-filters bypassed. The membranes only allow water to flow through while blocking salts, minerals, and other impurities from carrying on. This results in the emergence of purified, potable water on the permeate side while Salt, minerals, and other impurities are flushed down the drain from the concentrate side.

System Overview

Commercial Brackish Reverse Osmosis Equipment

In May 2013, Pure Aqua, Inc. designed and manufactured brackish reverse osmosis equipment to an IKEA store in Jordan to remove hardness, chlorine, TDS, and odor from well water. The equipment consisted of a twin alternating softener with 21” diameter FRP tanks, activated carbon filter with 18” diameter stainless steel tanks with top mounted valves and chemical dosing systems. The brackish reverse osmosis unit was designed to produce 12,000 GPD at a feed water TDS of a maximum 1,000 ppm, it was selected from our RO-200 series and came complete with a microprocessor control panel. Since the initial startup, the company has been receiving quality water and experienced minimal troubleshooting with the equipment.

A brackish reverse osmosis unit has the capability of removing salts, impurities and other organics from brackish water. Brackish water is water that comes from river openings or wells that are dug near the ocean. This type of water lies between seawater and fresh water. It is has a higher salinity than fresh water but not as much as sea or ocean water. Combining salty and fresh water together produces moderate salty water, but not recommended for consumption. To purify this water, brackish reverse osmosis units utilize a technology called “reverse osmosis”. Reverse osmosis removes salts, minerals,  and most other inorganic material present in the water by applying excessive pressure to the highly concentrated solute solution permitting the solvent to transfer through a very fine membrane and into the lower concentrated solution. Salts, minerals, and other impurities are blocked and discharged into the brine stream then into the drain. The result is purified water emerging on the lower end of the membrane.  This is why reverse osmosis is specialized to be used in areas where drinking water is brackish, containing salts or other dissolved minerals which are difficult to remove by other technology.

System Overview

Tap Water Reverse Osmosis Equipment

In May 2013, Pure Aqua, Inc. successfully manufactured tap water reverse osmosis equipment to a major company in CA, USA. The objective was to soften municipal tap water. The TW-15K-5240 produced 15,000 GPD while the TW-32K-7340 produced 32,000 GPD, both at a maximum rate of 500 PPM TDS. Both units came complete with a microprocessor control panel and activated carbon filters. Since their initial startup, the equipment have been running smoothly with minimal trouble-shooting.

Tap Water Reverse Osmosis Units were manufactured to transform unhealthy brackish water into fresh, purified drinking water suitable for drinking and everyday personal use.  Many countries have recognized the needs of having such units to purify their water. The discovery of this technology has established relief and hope upon billions of thirsty people around the world. These units utilize the reverse osmosis method to accomplish the stripping of purified water from dirty, contaminated water. A high pressure pump is utilized to apply excessive pressure forcing water molecules through a semi membrane leaving the contaminants behind. Purified water is gathered from the permeate side of the membrane, while the contaminated water is flushed down the drain from the concentrate side. The average tap water reverse osmosis unit includes an activated carbon pre filter, a softener with brine tank, and semi-permeable membranes.

Plant Overview

Multi-Media Activated Carbon Filtration Systems

In May 2013, Pure Aqua successfully manufactured multi-media and activated carbon filtration systems to a major company in Nigeria to remove particulates, chlorine, organics, and odor from well water. The multi-media and activated carbon filters were selected from our MF-1000 Series with 30” diameter steel tanks, electric actuated valves, and are controlled by an advanced PLC. Since their initial startup, the multi-media and activated carbon filtration systems have been operating accordingly with minimal trouble-shooting.

For satisfactory results, the filtration systems utilized the following grades of media: Silica Sand, Anthracite, Activated Carbon, and Gravel. Silica Sand is recognized globally as a highly effective filter media. It has the capability of blocking precipitates containing impurities and is specifically graded for water filtration systems. Its fundamental characteristics consist of filter sand size, hardness, and angularity which promote proper filtration. Anthracite is a black coal that has a large amount of fixed carbon then any known coal on the planet. It has been utilized as a water filtration method since the ancient times. Anthracite is crushed to be used as a medium density filtration media. When crushed, some sediments are allowed to deeply penetrate into the bed. Anthracite is known to have reduced backwash rates, lengthy filter runs and less head loss. Activated Carbon is a black firm coal that has plenty of pores with a very large surface area. Activated Carbon is utilized in chlorine removal and some types of heavy metals bound to organic molecules. It removes a lot more contaminants from water than regular carbon. Resin is an insoluble support structure that usually comes in the form of small beads created from an organic polymer substrate. Gravel is a sub-angular, firm, durable, and dense grain of predominately siliceous material. Its physical properties are among the best available in the world for water filtration applications.

Multi-media filters are manufactured take out suspended particles from water sources with a turbidity of up to 20 NTU.  During the first stage of the filtration process, small particles are transported down to a smaller and finer media levels. These filters contain cracks that collect. Activated carbon filtration systems utilize carbon to attract chemicals and impurities. Carbon consists of a little electro-positive charge that when water flows over the positively charged carbon surface, the contaminants negative ions are pulled toward the surface of the carbon granules. Activated carbon water filters take out impurities, odors, and colors from water. The two commonly known conditions affecting the efficiency of activated carbon filtration is the quantity of carbon in the system and the amount of time the contaminants stay in contact with the carbon.

System Overview

Commercial Reverse Osmosis Package

In May 2013, Pure Aqua, Inc. designed a commercial reverse osmosis package to a major company in Sri Lanka to remove chlorine, TDS, and odor from well water. The package included a multimedia filter, pre and post chemical dosing systems, and a membrane cleaning skid. The reverse osmosis system was designed to produce 27,000 GPD at a feed water TDS of a maximum 2000 ppm, it was selected from our RO-300 series and came complete with a microprocessor control panel. Since the initial startup, the company has been receiving quality water and experienced minimal troubleshooting with the equipment.

A reverse osmosis system is tasked with eliminating salts, organics, and other impurities from brackish water. Brackish water is water found in river openings or estuaries. Brackish water lies in the middle between seawater and fresh water. It is has more salt than fresh water but not as much as sea water. This type of water is moderately salty and isn’t recommended for consumption. To gain purified water from brackish water, a reverse osmosis system needs to employ a process called “reverse osmosis”. Reverse osmosis does away with salts, organics,  and other impurities present in the water by adding excessive pressure to the highly concentrated saline solution only allowing the solvent to flow through a semi-porous membrane then into the lower concentrated solution. Salts, organics, and other impurities are denied and thrown into the brine stream then into the drain. Purified water is then collected on the lower end of the membrane. 

Our portfolio of reverse osmosis package includes those specifically designed and engineered for larger industrial applications, medium sized commercial applications, containerized and trailer-mounted mobile systems for temporary and emergency applications.

System Overview

Commercial RO Package

In April 2013, Pure Aqua, Inc. designed and manufactured a commercial RO package to a major hotel in Jordan to remove, chlorine, TDS, and odor from well water. The package consisted of pre and post treatments including a multimedia filter and chemical dosing systems. The brackish reverse osmosis system was designed to produce 27,000 GPD at a feed water TDS of a maximum 3,000 ppm, it was selected from our RO-300 series and came complete with a microprocessor control panel. Since the initial startup, the company has been receiving quality water and experienced minimal troubleshooting with the equipment.

A brackish reverse osmosis system is a system that is designed to remove salts, minerals and other impurities from brackish water. Brackish water is water that comes from sources such as river openings or wells that are dug close to the sea. It is a combination of seawater and fresh water. It has a higher salinity volume than fresh water but not as salty as sea water. Brackish water is moderately salty, yet it isn’t encouraged for human consumption. Brackish reverse osmosis systems use a process called “reverse osmosis” to purify water. Reverse osmosis is employed in removing salts, organics,  and many other impurities that exists in water by applying extremely high pressure to the highly concentrated solute solution allowing the solvent to transfer through a semi-porous membrane and into the lower concentrated solution. Salts, organics, and other impurities are captured and discharged into the brine stream then into the drain. Finally we have purified water emerging at the lower end of the membrane. 

Typically, a commercial reverse osmosis system package requires pretreatment- ion exchange water softener, activated carbon filter or SBS chemical dosing and possibly some post treatment- polishing ion exchange resin bed. The configuration of the commercial RO package and the pre and post treatment will vary and depends on the end use of the RO-treated water. All necessary pre and post filtration equipment for your application is designed by Pure Aqua, Inc. engineers and assembled in our headquarter in southern California. It will be incorporated into your commercial RO system package to ensure complete functionality and efficiency of your commercial RO system.

System Overview

Nano Filtration System

In March 2013, Pure Aqua successfully manufactured and supplied a nano filtration system to a major company in Australia. The system was designed to produce 27,000 GPD at a feed up to 2,400 PPM TDS and was selected from our RO-300 series.  It came complete with dechlorination for chlorine removal and an antiscalant system to prevent fouling and scaling on the nano filtration membranes. Since its initial start-up, it has been operating accordingly with minimal trouble-shooting.

Nano filtration systems provides a solution to developing countries who lack access to clean drinking water. These systems are used to removal contaminants from water sources, and are commonly used for desalination. Nanofiltration (NF) is a cross-flow filtration technology that falls between ultrafiltration (UF) and reverse osmosis (RO). The membrane has about a 1 nanometre nominal pore size. Nano filter membranes are usually rated by molecular weight cut-off (MWCO) instead of nominal pore size. The molecular weight cut-off is usually less than 1000 atomic mass units (daltons). The pressure drop across the membrane (transmembrane pressure) required is lower than the one used for a reverse osmosis system leading to a significant reduction in operating cost. Nano filter membranes are still faced with scaling and fouling, therefore, antiscalants are highly recommended for use.

Nanofiltration (NF membrane) functions similarly to reverse osmosis or RO membrane, but is generally targeted to remove only divalent and larger ions. Monovalent ions such as sodium and chloride will pass through an NF or Nano filtration membrane, therefore many of its uses involve de-salting of the process stream.

In the production of lactose from cheese whey, for example, NF Filtration System concentrates lactose molecules while passing out salts, a procedure that purifies and concentrates the lactose stream. In water treatment, NF membranes are used as a softening membranes for hardness removal (in place of water softeners), pesticide elimination, and color reduction. It can also be used to reclaim spent Sodium Hydroxide NaOH solutions, in which case the permeate stream is purified NaOH, allowing reuse many times over.

System Overview

Skid Mounted Commercial Reverse Osmosis System

In May 2013, Pure Aqua successfully manufactured and supplied a skid mounted commercial reverse osmosis system to a major company in Florida, USA. The RO system came complete with activated carbon filtration for chlorine removal, water softener to remove hardness, and a UV sterilizer to kill bacteria. It came pre-piped and wired all on one skid controlled by one microprocessor control panel. The system was designed to produce 6,000 GPD at a feed up to 500 PPM TDS. The TW-6.0K-440 was selected from our RO-200 series. From its initial start-up, it has been running smoothly with minimal trouble-shooting. As a result, the company has had a reliable and steady supply of fresh, purified water at a cost far less than shipping water to the site.

Reverse Osmosis is a method that consists of removing a certain amount of salt and other impurities from water sources that are not made for human consumption. A high pressure pump is used to fight the osmotic pressure of a natural process called “Osmosis”. Osmosis naturally transports salt through a very fine membrane from a region with low saline concentration to an area with high saline concentration. Its goal is to acquire an equal amount of saline concentration on both sides of the membrane. Reverse osmosis comes in to reverse this process. The process starts by passing feed water through numerous pre-filters to remove particles and solids from water. The water then proceeds into a water softener tank which removes the hardness that prevents membranes within the system from damaging. It then proceeds through the actual system where it passes through semi-permeable membranes. Here, the membranes remove particles that the pre-filters bypassed. The membranes only permit water to flow through while preventing salts, minerals, and other impurities from flowing through. The final result is in the emergence of purified, fresh water on the permeate side while salt, organics, and other impurities are flushed down the drain from the concentrate side.

System Overview

Activated Carbon Filters

In January 2013, Pure Aqua successfully manufactured and supplied activated carbon filters to a major company in Algeria to remove chlorine, taste, odor, and color from well water. The filters are composed of epoxy coated carbon steel tanks, aquamatic valves, digital stagers and high quality media. The activated carbon filters were selected from our MF-1000 Series. ACF-54-A uses a 54” diameter tank. Both operated in parallel for each to handle a flow rate of 120 GPM.  Since its startup, the filtration system has been running smoothly with minimal trouble-shooting.

For satisfactory results, the filtration system utilized the following grades of media: Activated Carbon, and Gravel. Activated Carbon is tasked with removing chlorine, odor, and color from water as well as controlling the taste. Activated carbon simply eliminates impurities, viruses, soluble gases, and particles that are larger than 0.5 microns. Activated carbon filter media comes in several types:  coal based, wood based and coconut based each consisting of various particle sizes, base materials and activity.  Coal-based carbon filter media delivers excellent performance for contaminants and a large range of concentrations.  Coconut carbon filter media have an average performance rate with low boiling point along with low molecular weight compounds at lower concentrations. Wood based carbon media provide claim higher decolorization properties. The finer mesh sizes that are recommended for systems with lower flow rates. Gravel is the first step in particulate filtration. Incoming water flow is equally distributed over the entire filtration bed because of the gravel’s spherical shape. The water flow is permitted to spread throughout the gravel into many areas within the gravel bed. Gravel only permits particles that are finer than its gaps to pass through and proceed to the next stage of particulate filtration. The larger particles that were blocked are pulled out and left either on top or within the gravel or completely eliminated during occasional flushings or other types of cleaning.   Gravel consists of three grades: coarse, medium, and fine and all need to be loaded into the tanks in that same manner.

Activated carbon filtration systems is composed of carbon which has a small electro-positive charge applied to it that draws attention to chemicals and impurities. As water passes over the positively charged carbon surface, the contaminants negative ions are drawn towards the surface of the carbon granules. Activated carbon water filters are utilized as pretreatments to remove chlorine, odor, colors, and adjust taste before running feed water through a reverse osmosis system.

System Overview

Commercial RO Equipment

In May 2013, Pure Aqua, Inc. designed and manufactured commercial RO equipment to a major company in Chile to remove hardness, chlorine, TDS, and odor from well water. The equipment included multimedia and activated carbon filters to remove particulates, odor, color and taste, and a water softener to remove hardness. The reverse osmosis system was designed to produce 3,000 GPD at a feed water TDS of a maximum 1000 ppm, it was selected from our RO-200 series and came complete with a microprocessor control panel. Since the initial startup, the company has been receiving quality water and experienced minimal troubleshooting with the equipment.

A reverse osmosis system is manufactured to remove such things as salts, minerals, organics, and other impurities from wells, rivers, lakes, and the ocean. To gain purified water, the system uses a well-known technology called “Reverse Osmosis. Reverse Osmosis technology assists in purifying water by reversing a natural process called “Osmosis”. Osmosis naturally transports salt through a very fine membrane from an area of low solute concentration to an area of higher solute concentration so both sides of the membrane will achieve an equilibrium of solute concentration. Reverse Osmosis combats osmosis by using a higher pressure pump that applies high pressure to the highly concentrated side of the membrane, forcing only water to flow through the semipermeable membrane, while blocking salts, organics, and other impurities from flowing through. Fresh, potable water is collected at the lower end of the membrane, while salts and the other impurities are discharged into a brine stream then into a drain.

Commercial Reverse Osmosis and Industrial Reverse Osmosis Water Purification RO equipment built for any application. Custom built commercial reverse osmosis equipment with high performance membranes and components, is what you get when you buy Pure Aqua systems. Our team can build most systems to fit your application in short period of time. We also offer unlimited FREE technical support as long as you own our commercial RO equipment. On-site installation is also available on any water RO purification equipment we build. All our systems are proudly designed and manufactured in United States.

System Overview

Water Filtration Systems

In March 2013, Pure Aqua successfully manufactured and supplied 5 sets of water filtration systems to a major company in Qatar to remove chlorine, hardness, and suspended solids from well water. Each filtration system is composed of multi-layer filter, activated carbon filter and water softener. The filters were selected from our MF-400 series and softeners were selected from our SF-200 series. All of them came complete with FRP tanks and fleck 2850 top mounted valves. Each set was chosen to produce 25,500 GPD.  Since its startup, the filtration systems have been operating accordingly with minimal trouble-shooting.

For satisfactory results, the systems utilized the following grades of media: Silica Sand, Anthracite, Activated Carbon, Gravel and Resin. Silica Sand is the most common filter media. It’s a fine mesh sand that’s coupled with a coarse grain support bed to take out suspended solids and turbidity. It is commonly utilized in municipal, industrial or residential applications for sediment filtration. Silica Sand meets industry standards by claiming excellent chemical properties such as a high silica content, low soluble calcium, magnesium, and iron compounds. It has been adopted both nationally and internationally due to its superior quality, color, recommended chemical properties, and large range of precision sizing. Anthracite is a type of coal that has exclusive density that allows it to be utilized in multimedia filters. It is used in applications where silica pick-up from sand media is not desired. Anthracite claims a large carbon content and small volatile matter that makes it desirable to be used in water treatment. Activated Carbon is utilized to eliminate unpleasant tastes, odors, chlorine, color, and organics from water it eliminates simple impurities such as debris from water to harmful contaminants such as viruses and soluble gases. Activated carbon can simply eliminate particles that are larger than 0.5 microns. Gravel has a spherical shape that encourages good water flow and equal distribution in supporting beds.  Gravel blocks large particles from passing through and only allowing particles that are smaller than its gaps to pass through. The larger particles are pulled out and collected on top or within the gravel until they are broken down enough to be able to pass through the gaps or eliminated completely during flushing or extra types of cleaning.   Resin are light brown spherical beads that serve as an excellent purity premium grade beadform designed especially for the treatment of foodstuffs, beverages, potable waters, and water used in food processing. It was developed to remove taste and odor and provide excellent stability. It is mainly utilized for softening water in municipal and industrial water treatments.  Resin is not soluble in water yet it is soluble in alcohol. It has many different classes and all depend on the exact chemical composition and potential uses. There are many applications for resins, ranging from art to water softeners, and many consumers deal with products that contain resin on a daily basis.

Multi-layer filters are around the oldest, well understood, and tested forms of water filtrations. They are tasked with doing away with suspended particles from water and service feed water that has a turbidity of up to 20 NTU. They are resisted to fouling and can be easily cleaned and maintained. The filters are powerful with no moving parts within the tanks and are rather inexpensive with no recurring cost of consumable chemicals. Multi-layer filters have two types of operating cycles: Service and Backwash. During the service cycle, water is transported downwards in the direction of the media while solids pile up in the media bed. The purified water flows through to downstream processes. When filters begin to clog or flow rates are decreased, this is when a backwash cycle is introduced. To keep the water quality from degrading, the flow is reversed. The control valves direct the flow into the drain while carrying the particles that were accumulated during service. The required flow is made specifically for the media and is essential to proper cleaning of the media bed. The backwash flow is always higher than the service flow rate.

Activated carbon filters like to utilize carbon due to its added electro-positive charge that pulls the attention of chemicals and impurities. When water passes over the positively charged carbon surface, the contaminants negative ions are attracted and pulled toward the surface of the carbon granules. Activated carbon water filters are put into effect before water is passed through a reverse osmosis system to take out contaminants, odors, and colors. The amount of carbon in the system and the extent of time the contaminants stay in touch with the carbon, are the two crucial factors that affect the efficiency of activated carbon filtration. The more carbon added, the more contaminants taken out.

System Overview

Skid Mounted Reverse Osmosis System

In March 2013, Pure Aqua successfully manufactured and supplied a skid mounted reverse osmosis system to a major company in Guatemala. The system came complete with pre and post treatments including multimedia and activated carbon filters, a water softener and chemical dosing systems. It came pre-piped and wired all on one skid controlled by one microprocessor control panel. The system was designed to produce 1,800 GPD at feed TDS up to 5000 PPM. The BW-1.8K-325 was selected from our RO-200 series. From its initial start-up, it has been operating accordingly with minimal trouble-shooting.

Reverse Osmosis is a method that applies excessive pressure via uses a high pressure pump to force water, not salt, through a semi-porous membrane in the opposite direction of a natural process called “Osmosis”. Osmosis draws a diluted solution towards a highly concentrated solution. Reverse Osmosis is tasked with reversing this natural process by transporting water molecules and particles from the highly concentrated solution to a low concentrated one. A reverse osmosis system is utilized to carry out the process of reverse osmosis by passing feed water through semi-porous membrane eliminating particles, organics, and other impurities. Water is only permitted to pass through while salts, organics, and other impurities are rejected and discharged into a drain from the concentrate side. The ending result is fresh, potable water emerging on the permeate side.

Pure Aqua, Inc. offers the industrial Reverse Osmosis (RO) Membrane Filtration Systems to meet any city water or tap, brackish or seawater application need. By using the highest quality and more reliable components, the skid-mounted Pure Aqua reverse osmosis systems are engineered to effectively produce high grade treated water, free of contaminants or particulate matter. The Pure Aqua RO membrane filtration systems range in standard output capacities from 500GPD to 1,000,000 GPD with larger custom units available. Our experienced process applications engineers have a long history designing and installing the best skid mounted RO filtration systems.

Pure Aqua, Inc. offers a variety of system accessories for use with our standard or skid mounted reverse osmosis membrane filtration systems. Accessories include ultra-filtration, screen filters, backwash systems for multi-media filtration, chemical feed or dosing systems, clean-in-place or CIP systems, ultra violet sterilizers, ozonation units and media filtration systems.

System Overview

SWRO System

In May 2013, Pure Aqua successfully manufactured and supplied a SWRO system to a major company in Saudi Arabia. The system came complete with an advanced microprocessor control along with pretreatments consisting of multimedia filters and an antiscalant dosing system. The SW-3.0K-304 unit was designed to produce 3,000 GPD at a maximum 42,000 PPM feed water TDS. The units were selected from our SWC Series. From its initial start-up, the system has been operating accordingly with minimal trouble-shooting.

Seawater reverse osmosis is a simple method that involves eliminating a numerous amount of salt and other minerals from water sources that are highly non-consumable. A high pressure pump is utilized to combat the osmotic pressure of a natural process called “Osmosis”. Naturally, osmosis transports salt through a semi-porous membrane from a region with low saline concentration to a region with high saline concentration. Its objective is to gain an equal amount of saline concentration on both sides. This is when seawater reverse osmosis comes in to reverse this process. First, seawater is passed through several pre-filters to take out particles and solids from the water. Next, water proceeds into a water softener tank to remove hardness that can cause damage to the membranes within the system. Lastly, it goes into the seawater RO system where the semi-porous membranes take out the particles that the pre-filters bypassed. The membranes capture salts, organics, and other impurities and only permit water to flow through. At the end we have potable water emerging on the permeate side while salt, organics, and other impurities are discharged into the drain from the concentrate side.

The most expensive real estate areas in the world is not in major known cities; it is on off-shore platforms and ships, where every square meter or foot can cost hundreds or thousands of dollars. An increasing number platforms and marine vessels rely on seawater reverse osmosis (SWRO) systems to extract fresh water from seawater. Marine vessels require the SWRO system to generate fresh water, applications: commercial marine, military, livestock. SWRO system reliability is very important to ensure adequate clean fresh water for personnel as well as process equipment. However, the cost of on-board space value demands the most space-efficient SWRO package possible.

The high-pressure pump (HPP) provides the driving force to produce permeate fresh water from the SWRO membrane, and is key to achieving reliability and compact size.