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Pretreatment Condition in the Full Scale Dissolved Air Flotation Process Using a DAF Pump  

Lee, Chang-Han (Department of Environmental Engineering, Catholic University of Pusan)
An, Dae-Myung (Sejong Environment & Solutions Co.)
Kim, Seong-Soo (Department of Environmental Administration, Catholic University of Pusan)
Cho, Seok-Ho (Department of Environmental Administration, Catholic University of Pusan)
Ahn, Kab-Hwan (Department of Environmental Administration, Catholic University of Pusan)
Publication Information
Journal of Korean Society of Environmental Engineers / v.31, no.1, 2009 , pp. 58-63 More about this Journal
Abstract
Dissolved air flotation (DAF) process is generally considered more effective than sedimentation process in raw water containing algae, humus materials, and low density particles. This study presents the treatment efficiencies by the coagulation and flocculation conditions at a drinking water treatment plant using a laboratory tester and the full scale DAF pump system. The full scale DAF pump system (F-DAF) in this study had a capacity of 5,000 $m^3$/d and a hydraulic surface loading of 10 m/hr. F-DAF in D drinking water treatment plant was continuously operated to determine the operational performance and pretreatment (mixing and coagulation) conditions. Results in the laboratory experiment showed that the optimum coagulant (PSO-M) doses required to 2.7~4.5 mL/$m^3$/NTU with raw water turbidity from 13.8 NTU to 56.3 NTU. F-DAF in the optimum coagulant dosage could be operated in effluent turbidity of 1 NTU or below for a month.
Keywords
DAF; Flotation; Full Scale; Coagulation; Flocculation; Drinking Water;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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