Dissolved Air Flotation

Dissolved Air Flotation

Dissolved air flotation is a water treatment process that clarifies wastewater by removal of suspended solids, oils, greases, BOD, COD, and metals. This is achieved by dissolving air in the wastewater under pressure and then releasing the air at atmospheric pressure in a flotation tank. The released air forms tiny bubbles which adhere to the suspended matter causing it to float to the surface of the water where it can then be removed by a skimming device, ready to dewater for proper disposal. To improve solids removal coagulant/flocculants are added to coax suspended solids and colloidal particles into clumping together.

Typically, DAF is used to clarify wastewater from food processing plants, industrial laundries, oil refineries, paper mills, metal finishing, and many other niche industries so water is suitable for reuse or discharge to sewer.

• Reduced Footprint

• Lower Compliance Costs

• High Efficiency

• High Quality Treated Water

• Increase Reuse Rates

Advantage

• Overall specialized, compact structure, and high performance.

• Huge markets ,high maturity, stable performance and reliable operation.

• Hydraulic load: 4~ 6 m3 / (m2h).

• Maximum inlet SS concentration is 3000 mg/L.

• Automatic scum remoual, solid content can be up to 30 ~ 100 mg/L.

• Applied for the wastewater with suspended solids & floc density lighter than wateror close to the water and weak precipitation phenomenon.

Technical Parameters