Daf Drinking Water Treatment

Dissolved air flotation daf is an alternati ve process for solid liquid separation whereby particles are removed by means of their attachment to air bubbles.

Daf drinking water treatment.

Dissolved air flotation daf is a water treatment process that clarifies wastewaters or other waters by the removal of suspended matter such as oil or solids. Daf systems are commonly used for the removal of oils greases and suspended solids to meet a variety of treatment goals including. The dissolved air flotation daf process mixes a clarified stream from the outlet of the unit with air at 3 9 bar to produce a supersaturated compared with saturation at atmospheric pressure solution of air in water. Dissolved air is the most common type of flotation gas used in potable water treatment.

Since 2003 a full scale dissolved air flotation daf process has been operated by the korea water resources corporation k water in the songjeon drinking water treatment plant swtp. The daf process dissolves air in the water under pressure then releases it at atmospheric pressure. Daf is an alternative clarification process that uses micro air bubbles to attach and float flocculated particles and suspended solids to the water surface for removal see fig. The process was first used in scandinavia and south africa and over the last 25 years has seen increasing and widespread use around the world.

Dissolved air flotation daf is a proven and effective physical chemical technology for treating a variety of industrial and municipal process and wastewater streams. Product recovery and reuse. Kwi group is the global leader in delivering dissolved air flotation daf for water and wastewater treatment systems for industrial and municipal applications. Daf can be effective in treating algae bloom or red tides when overproduction of algae discolors surface water and sometimes contaminates it with toxins.

The removal is achieved by dissolving air in the water or wastewater under pressure and then releasing the air at atmospheric pressure in a flotation tank basin. In addition to its use in drinking water treatment daf also is used for pretreatment in seawater desalination systems including as an add on for fluence s nirobox sw. In fact the process helps clarify wastewaters and other waters by eliminating different types of suspended matter. Dissolved air flotation daf is a water treatment process designed to remove oils solids and greases.