Pure Aqua Forced Draft Degasifiers are used to remove unwanted gases from supply water. The degasifier removes the gases by passing the water over a packing media that helps the water form a thin film over the surface area of the tower. A counter current airflow is introduced at the bottom of the tower and travels up the stack through the descending flow of water. The gases are stripped as the air passes over the surface area of the water.

Degasifiers are used in demineralizer applications to strip CO2 following a strong acid cation exchanger or softening application. They can also be used as an economical way to strip hydrogen sulfide or volatile organic compounds (VOC).
Pure Aqua has a complete line of Forced Draft Degasifiers available. The systems start at 75 gpm and go up to 1000 gpm.

Degasifiers are sized based on water service flow rate.

Features:

 

Corrosion resistant, high quality material

Centrifugal fan

Clearwell (FDD75-250)

Overflow connection

Inlet valve and plumbing to tower

Tower assembly and internals

Clearwell access ports

Clearwell level switch

Float operated ball valve

Power supply: 460V/3pH/60Hz

Available Options

Standby fan unit

Fixing lugs

Insulated/heated clearwell

Clearwell (FDD390-1000)

Tropical conditioned motor

Flame proof motor

Power supply: 220V/3pH/50Hz

Fan intake air filters

Custom designed units

Operation of the System

The forced aeration of water will obtain oxidized matter from the fluid and remove gases such as methane (CH4), carbon dioxide (CO2), and hydrogen sulfide (H2S). The total removal of the gases requires previous acidifying of the fluid and the use of strong oxidizing agents such as chlorine or potassium permanganate. The raw water falls from the top of the tower onto a layer of filling elements of special shapes. This is required in order to maximize the surface area with the forced upward draft. This results in the most thorough oxidation and removal of gases carried up through the tower and collected at the top.

Model #	Tower Diameter	Max Flow (GPM)	Air Flow (CFM)	Blower HP
					Inlet/ Outlet.	Clearwell Size (Gal)	Media (ft3)	Height (ft.)	Shipping Weight
FDD-75	24”	75	350	1/4	2” / 4"	300	20	13	600
FDD-140	36”	140	700	1/3	3” / 6"	600	50	13	900
FDD-250	48”	250	1250	1/2	4” / 8"	1000	90	21	1150
FDD-390	60”	390	2000	3/4	6” / 10"	1500	140	21	1400
FDD-550	72”	550	2800	1	6” / 10"	2200	200	21	1700
FDD-1000	96”	1000	5000	2	8” / 12"	4000	270	21	3900