The removal is achieved by dissolving air in the water or wastewater under pressure and then releasing the air at atmospheric pressure in a flotation tank basin.
Dissolved air flotation.
The floc accumulated on the surface known as the float is skimmed off as sludge section 7 19 the clarified water is removed from the bottom and is sometimes called the subnatant or floated water.
The released air forms tiny bubbles which adhere to the suspended matter.
Dissolved air flotation daf is a water treatment process that clarifies wastewaters or other waters by the removal of suspended matter such as oil or solids.
Daf systems are commonly used for the removal of oils greases and suspended solids to meet a variety of treatment goals including.
Dissolved air flotation operates on the principal of the transfer of floc to the surface of water through attachment of air bubbles to the floc.