Dissolved Air Flotation (DAF) System
Dissolved Air Flotation (DAF) provides an extremely efficient method for the treatment of wastewaters that are high in contaminants. It is used to reduce suspended solids (SS), fats, oil, grease (FOG), chemical oxygen demand (COD) and heavy metals.
Wastewater is pH balanced and mixed with a coagulant to achieve the maximum separation of liquids and solids. The solids form larger clumps, and a continuous stream of microscopic air bubbles causes these clumps to float. A rotating scraper at the top of the flotation tank skims the thickened waste to a chute for disposal and the cleaned wastewater is discharged over a weir. Sludge which settles in the flotation tank is removed through a timer-operated valve. The discharge may be fed directly to sewer or further treated by one of our biological treatment systems.
The DAF process is suited to a wide range of industrial applications and flow rates.
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a DAF plant at a bakery