Dissolved Air Flotation (DAF) System

Dissolved Air Flotation (DAF) system has proven to be very effective in industrial wastewater pretreatment and has been used in various applications within water, wastewater and desalination applications. To maximize removal of suspended solids and colloidal particles and substances, a flocculator with chemical dosing can be added in front of the DAF. This ensures the polluted water is chemically pretreated before entering the DAF unit (TSS and FOG in excess of 95% is common).

DAF is based on a physical / chemical process, where the injection of air into the water stream with chemical assistance causes the particles/flocs to float to the surface. This floating sludge layer is then automatically and continuously removed by a scraper mechanism. The DAF system will produce a treated effluent virtually free of TSS, FOG and remove a large portion of the BOD

Depending on the application and the clients requirements, a DAF system can be fabricated in stainless steel or in concrete construction.

DAF technology is particularly applicable for

• Dairy industry

• Health Facility

• Garment – Textile industry

• Palm oil industry

• Slaughter house & farm industry

• Industrial estate (communal WWTP)

• Power plant

• Plastic recycling industry

• Desalination plant