What is a daf dissolved air flotation?

DAF dissolved air flotation is a kind of efficient wastewater treatment equipment, mainly used for solid-liquid separation and liquid-liquid separation. It is a physical separation process used for removing contaminates from water. DAF dissolved air flotation is suitable for industrial wastewater treatment and municipal sewage water treatment.

We have been over 9 years in manufacturing and designing of daf dissolved air flotation since year 2006. Excellent quality with cheap factory price for you.

Working principles of daf dissolved air flotation:

There is an air tank and an air dissolved tank inside dissolved air flotation system:

Air is absorbed by air compressor in air tank and then is forced to dissolve into water in air dissolving tank, the process saturates effluent with air under pressure.

Once this saturated effluent enters the flotation chamber, the pressure is released back to atmospheric pressure. This immediately results in the recycled flow becoming supersaturated, generating micro bubbles as the dissolved air comes back out of solution.

These bubbles attach to, and form within, the solids or chemical flocculants entering the vessel, causing them to float to the surface where they are retained and subsequently removed by a mechanical skimmer. DAF dissolved air flotation is your ideal choice for solid-liquid and liquid-liquid separation, for example oil-water separation.

Uses of daf dissolved air flotation:

The primary objective of a dissolved air flotation system is to reduce Chemical Oxygen Demand (COD) loading by the removal of high COD contaminants including fats, oils and greases, color, organic matter and colloidal material. The total dissolved air flotation system can be used with or without the addition of chemicals, depending on the waste type, chemicals can further enhance performance.

DAF dissolved air flotation is widely used for:
1. Paper pulp and water recycling in paper-making industry

2. Removal of heavy metal ions and sundries from wastewater

3. Removal of color and impurities from dyeing wastewater

4. Separation of refinery wastewater and oil in petroleum industry.

5. Solid-liquid separation of sludge and membrane after biological treatment.

DAF dissolved air flotation can efficiently remove COD, with small footprint. Both vertical type and horizontal type are optional according to your working site. Strong technical team and strict final inspections ensure excellent quality and long service life of our daf dissolved air flotation.