Automatic Dissolved Air Flotation Unit Neo Tech DAF process consists of super saturation of discharge water from the effluent end of the system tank with air. The super saturated water stream is then mixed with the waste stream and pressurized in pressure tube. A sudden release of pressure from the saturated stream millions of microscopic bubbles form and attach themselves to the contaminants of oil and solids in the wastewater, thereby changing their buoyancy and floating them to the water surface where they can be skimmed and removed from the water.Neo Tech also offer a combined chemical pretreatment to improve DAF solids removal efficiencies. The use of chemical flocculants with DAF is based on system