Dissolved Air Flotation (DAF)
Dissolved Air Flotation (DAF) is an efficient method used for the separation of
suspended solids, oils & greases and alternative insoluble impurities from water. DAF systems use
chemical pretreatment and small air
bubbles to separate contaminants from water. Pretreatment of sewer water lowers total
suspended solids (TSS), oils and greases, organic chemistry O demand
(BOD) and metal concentrations.
A number of the DAF processed effluent is recirculated and concentrated with air beneath air mass. Once this
water is free into the
DAF system beneath region conditions,
micro-bubbles type and
carry the suspended solids to the surface for removal. Listed below are many of the applications within which a DAF system is economical and price effective.
In a DAF clarifier, microscopic air
bubbles are created and mixed with the
incoming waste. The air
bubbles attach themselves to the contaminants, which provides them buoyancy. The buoyant mixture of
particles and air bubbles float to the surface and are removed by a skimming mechanism.
Air bubble production is achieved by pressurizing some of the clean effluent and use it back to the inflowing to be mixed with the waste stream. Because the super saturated water enters the DAF the pressure is removed and countless microscopic air bubbles are created. The bubbles become entrained within the solids, rise to the surface and kind a bed of fabric that's fatless into an isolated chamber.
Air bubble production is achieved by pressurizing some of the clean effluent and use it back to the inflowing to be mixed with the waste stream. Because the super saturated water enters the DAF the pressure is removed and countless microscopic air bubbles are created. The bubbles become entrained within the solids, rise to the surface and kind a bed of fabric that's fatless into an isolated chamber.
Features:
- 1. Flexible layout choices, tailored to any size plant
- 2. Retrofit existing geological phenomenon basins to extend capability of existing plants
- 3. Ideal for membrane pretreatment since chemical compound usually isn't needed
- 4. Efficient for cold water clarification
- 5. Start-up and shut-down inside minutes
- Hydraulic or mechanical sludge removal choices
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