Dissolved Air Flotation Systems for Fat, Oil & Grease (FOG) Removal

DAF systems use physio chemical processess to remove Total Suspended Solids (TSS), Biochemical Oxygen Demand (BOD) and oil and grease. Air is relased under high pressure into a recycled stream of effluent obtained from the DAF system.  The recycled water is mixed with wastewater in a contact chamber, from where the dissolved air is let out as micron sized bubbles that adhere to the contaminants. The contaminants and the bubbles then rise to the surface and form a floating layer of contaminants that is skimmed off the surface of water and transported to a hopper.