Features:

• Dow Filmtec BW30-365 High Rejection Brackish Water Industrial Reverse Osmosis Membrane:
• The Dow Filmtec BW30-365 has been the reverse osmosis element of choice for system designers, OEMs, and system operators requiring consistently high performance and maximum element life when treating difficult feed waters.
• The Filmtec BW30-365 RO element offers proven performance, high rejection, and outstanding robustness and durability across a wide range of feed conditions where unit price is a key driver.
• The Dow Filmtec BW30-365 features the thickest feed spacer (34 mil) to lessen the impact of fouling.
• The Dow Filmtec BW30-365 industrial RO membrane may be cleaned over the widest pH range (pH 1-13) for the most effective cleaning.
• The Dow BW30-365 RO membrane is best suited for systems operating on challenging feed streams, where reliable pretreatment is not an option, or where maximum cleanability delivers value.
• Dow Filmtec Part # 80773

Specifications:

• Dow Filmtec BW30-365 Industrial Reverse Osmosis Membrane Specs:
• Dimensions: 8" W X 40" L
• Maximum Operating Temperature: 113°F (45°C)
  (Maximum temperature for continuous operation above pH 10 is 95°F (35°C).)
• BW30-365 Permeate Flow Rate gpd (m3/d): 9500 (36)
  (Permeate flow rates for individual elements may vary but will be no more than 15% below the value shown.)
• Maximum Operating Pressure: 600 psi (41 bar)
• Maximum Pressure Drop: 15 psig (1.0 bar)
• Stabilized Salt Rejection: 99.5%
• Minimum Salt Rejection: 99.0%
• Maximum Feed Silt Density Index (SDI): 5
• Free Chlorine Tolerance: <0.1 ppm
• pH Range, Continuous Operation: 2-11
  (Maximum temperature for continuous operation above pH 10 is 95°F (35°C))
• pH Range, Short Term Cleaning (30 min.): 1-13
• Dow Filmtec BW30-365 Industrial Reverse Osmosis Membrane Materials of Construction:
• Membrane Type: Polyamide Thin-Film Composite

Instructions:

• Filmtec Dow BW30-365 Reverse Osmosis Membrane Instructions:
• Proper start-up of reverse osmosis water treatment system is essential to prepare the BW30-365 and to prevent membrane damage due to overfeeding or hydraulic shock.
• Keep the BW30-365 RO element moist at all times after initial wetting.
• During prolonged system shutdowns, it is recommended that the Filmtec BW30-365 membrane elements be immersed in a preservative solution. This is to prevent biological growth.
• Avoid any abrupt pressure or cross-flow variations on the spiral elements during shutdown, cleaning or other sequences to prevent possible BW30-365 Reverse Osmosis Membrane damage.
• During start-up, a gradual change from a standstill to operating state is recommended:
  - Feed pressure should be increased gradually over a 30-60 second time frame
  - Cross-flow velocity at set operating point should be achieved gradually over 15-20 seconds
  - Permeate obtained from first hour of operation should be discarded.
• Maximum pressure drop across an entire pressure vessel (housing) is 50 psi (3.4 bar).