Industrial Equipment DAF Dissolved 

Clarifying Treatment:Dissolved Air Flotation Provides Alternative for Treating Raw Water with Light Particles Dissolved air flotation is an alternative clarification process ideal for treating raw water with light particles,such as algae or color-causing organics,and at low temperatures when sedimentation is not as effective. DAF is an alternative clarification process that uses micro air bubbles to attach and float flocculated particles and suspended solids to the water surface for removal(see Fig.1).In contrast,sedimentation removes settled solids from the bottom. Figure1.Generic DAF Process Flow Diagram Before the flocculated water 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 in a pumped recycle stream by an air compressor and are dissolved in water through a packed-tower-type of saturator.The floated sludge is rem…