DAF (Dissolved Air Floatation) system is used for final clarification and FOG removal, in which micro air bubbles attach and float flocculated particles and suspended solids to the water surface, where it is skimmed for final removal.
Before the flocculated wastewater enters the clarification chamber, millions of tiny air bubbles are released from the diffuser nozzles to the water, which attach and float the floc particles to the water surface. The air bubbles are generated by the introduction of compressed air to the final effluent recirculation line followed by rapid decompression of the saturated solution in the clarification zone.
EPT has installed and commissioned over 10 DAF systems in dairies, beverage manufacturing and rendering plants.