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The Dissolved Air Flotation (DAF) process separates liquids from solids. Microscopic air bubbles become attached to solid particles suspended in liquid, causing the solid particles to float.

In a DAF wastewater treatment system air is dissolved into liquid under pressure. The dissolved air remains in solution until the pressure is released to atmospheric pressure, causing the air to come out of solution in the form of microscopic air bubbles. The bubbles become attached to the solids in the wastewater causing them to float to the surface, forming a float blanket. Surface skimmers then remove the float blanket.

The Baldwin system’s air dissolving efficiency is approximately 90% due to the proprietary non-clogging spray cone inside the unit. The efficiency of the dissolved air flotation system permits lower recycle rates and hence allows higher wastewater feed rates.