Dissolved Air Floatation Pump

The EDUR dissolved air floatation (DAF) pump is a very effective way to separate suspended solids and emulsified oils from industrial waste streams. Microscopic air bubbles are produced and mixed with waste water containing the suspended contaminants. The small bubbles attach themselves to the suspended particles, which gives them a net positive buoyancy. These buoyant clusters of particles and bubbles rise smoothly to the surface forming a float which is reduced by skimming.

Air and recycled "clean" effluent is introduced to the pump section. The proportion of air/water is controlled through simple valves. Under pump discharge pressure this air effluent mixture becomes supersaturated with air microbubbles. This enriched stream is then recycled back into the dirty effluent and fed to the DAF unit. Up to 35% air can be achieved with 100% saturation and microbubble size smaller than 30 microns.