Dissolved air flotation is a process that removes suspended solid matter. Tiny bubbles of air adhere to the solid matter, causing it to float to the surface where it can be skimmed off. A reduction in the pressure of the relief valve, allows bubbles of air to escape from the gas-enriched pressurised water.

To saturate the pressurised water with air, a partial flow of the clear water is used as a motive flow for the water jet air compressor. Compressed air is fed to the suction side. The mix of motive and suction flow is fed into the saturation tank – below the liquid level. The fine dispersion of the air in the motive flow enables ideal air saturation of the pressurised water across the whole operating range.