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DEGASIFIERS
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DEGASIFIERS Degasifiers are used to remove unwanted gases from supply water. It 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. Degasification increases the life of the process equipment by preventing or controlling corrosion. The scientific equipment helps in removal of various gases such as allow gases such as carbon dioxide, methane and hydrogen sulfide to escape and to let volatile substances such as phenol vaporize into the moving stream of air. The equipment is widely used for waste water treatment and other related applications. Hydrogen sulfide gas is seldom completely removed by degasification because it is readily converted to non-volatile sulfides in the degasifier. 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). Weiber offer a complete line of Forced Draft Degasifiers available. The systems start at 75 gpm and go up to 1000 gpm. Degasifiers are constructed based on water service flow rate. Water degasifiers can be used in many applications such as pharmaceutical, boiler feed water treatment, steam generating, microelectronics and semiconductors, medical water, lab water, or any high purity water application. Degasifier features three major components including the tower, the blower and the sump. Degasifiers are well proven as an efficient, reliable and cost-effective approach to reducing dissolved gases during the water treatment process. Pure Aqua engineers its systems for compact and efficient design tailored to any custom application.
Salient Features Ÿ Centrifugal fan
Ÿ Tower assembly and internals
Ÿ Overflow connection
Ÿ Float operated ball valve
Ÿ Corrosion resistant, high quality material
Ÿ Power supply: 460V/3pH/60Hz
Ÿ Inlet valve and plumbing to tower
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Standard Specifications Ÿ Standby fan unit Ÿ Fixing lugs Ÿ Insulated/heated clearwell Ÿ Clearwell (FDD390-1000) Ÿ Tropical conditioned motor Ÿ Flame proof motor Ÿ Power supply: 220V/3pH/50Hz Ÿ Fan intake air filters Ÿ 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.
Standard Specifications
Model No.
GPD
LPD
PSI
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
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