They are a cost-effective alternative to conventional sedimentation
clarification processes.
The advantages of DAF clarifiers are their ability to treat a wide range of
suspended solids in water at a high rate of solids removal and for wastewater sludge
thickening.
Empty circular DAF clarifier. Note the shallow tank and all wetted parts are stainless
steel construction. The top bridge rotates around the tank rim once every three minutes
or less. Normal tank water depth is 18". Normal rise rate of suspended solids is 10" to 12" per minute.
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Dissolved air flotation clarifiers operate effectively over a wide range of hydraulic and solids loading.
DAFs can be used for treatment of reservoirs, potable
water treatment, water reclamation, screening, and treatment of industrial and municipal wastewaters.
Circular dissolved air flotation clarifiers in operation. Note the floated sludge being removed by gently scooping it off the surface of the water. Also, note the difference between the sludge mat in the tank and clarified water in the central part of the clarifier.
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