Dissolved Air Flotation Processes

摘要

The theories and applications of various dissolved air flotation clarifiers (Supracell, Sandfloat, Floatpress and Sedifloat) are presented. Supracell is a high-rate dissolved air flotation clarifier with only 3 to 5 minutes of detention time. Major application of Supracell is industrial effluent treatment. Sandfloat is a package plant consisting of flocculation, dissolved air floatation and automatic backwash filtration, and designed for either potable water treatment or tertiary wastewater treatment. Sedifloat is a wastewater treatment package plant consisting of both sedimentation and dissolved air flotation. Floatpress consists of both dissolved air flotation and filter press and is specifically designed for sludge thickening. A Krofta Bargefloat is a floating lake water clarification plant designed for acid rain neutralization, phosphorus removal, algae removal and lake water purification. Bargefloat has built-in chemical feeders, flocculator, dissolved air flotation clarifier and sand filter on a barge.