Description
Dissolved air flotation Description
DAF is designed to mainly remove fats, oils and grease (FOG), suspended solids (TSS), parts of biological oxygen demand (BOD) and chemical oxygen dem and (COD) that hard to be dissolved in water and other pollutants from waste water. The process is simple - tiny bubbles attach to solid contaminants causing them to float and then sludge is skimmed off the surface of the water - but designing a DAF system for a real-world application isn't quite as simple.
DAF dilssolved air flotation is mainly used in the following aspects paper-making effluent processing and fiber recovery, wasterwater treatment in printing& dyeing; the treatment of wastewater with heavy metal ions, like electroplating wastewater; oily wastewater treatment; wastewater treatment in tanning, chemical and painting industry; solid and liquid separation of wastewater from food industry.
Dissolved air flotation Feature
Oil content in outlet water can be reduced less than 1mg/L
Broken ring, broken chain, decolorization, deodorant, disinfection
No man need on duty
The skid mounted structure is available out-of-the-box
No polymer consumption, low cost of investment and operating
An efficient performance of solid and liquid seperation,whicn is from unique dissolved air and micro bubble manufacturing technology.
Less water residence time
Instant power on and off
Dissolved air flotation Available Options
Access platforms with ladder or stairs
Automatic sludge pump out packages
Chemical pretreatment systems
Concrete tank designs for large in ground installations
Duplex systems for redundancy
Effluent monitoring
Effluent sampling
Explosion-proof design
Flash mix/flocculation tanks with mixers
Full FRP or stainless steel construction
Influent equalization
Influent / effluent lift stations
Instrumentation and controls
Removable covers with gaskets
Integral mechanical sludge thickener
On board reagent storage (day tanks)
Pilot size units for on-site testing
Potable water design
Special coatings
Sludge handling and dewatering
Dissolved Air Flotation Applications
Paper-making waste water treatment for fiber recycling.
Paint, printing and dyeing waste water treatment for color reduction.
Chemical waste water treatment.
Food waste water treatment.
Oil refinery for separating oil and impurity.
