Simultaneous Nitorogen and Phosphorus Removal by Anoxic-Aerobic High Sludge Concentration Activated Sludge Process
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概要
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In this profect, various combinations of the Anoxic-Aerobic High Sludge Concentration Activated Sludge Process (AAHSC-Activated Sludge Process) and phosphorus removal processes were examined. By the addition of alum salts at a molar ratio of 1 : 2 (Al : P) to the anoxic tankd of the AAHSC-Activated Sludge Process, simultaneous removal of nitrogen and phosphorus at efficiencies greater than 80% were achieved. The authors were able to increase the phosphorus content of the activated sludge slightly by applying anaerobic stress to the anoxic tank of the AAHSC-Activated Sludge Process, and could remove influent phosphorus at an efficiency of 44.3%. It was revealed that the AAHSC-Activated Sludge Process when supplemented by a strict anaerobic tank at the inlet port could remove nitrogen and phosphorus at efficiencies of 83.3% and 55.5%, respectively. By the combination of the AAHSC-Activated Sludge Process and anaerobic dephospho-thickener, 80% of influent nitrogen and 63-76% of influent phosphorus were removed effectively over a long term.
- 1984-10-25
著者
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Hashimoto Susumu
Department Of Environmental Engineering Faculty Of Engineering Osaka University
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Furukawa Kenji
Department Of Applied Life Science Faculty Of Engineering Sojo University
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Hashimoto Susumu
Department Of Environmental Engineering Faculty Of Engineering Osaka Unviersity
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Hashimoto Susumu
Department of Electrical and Electronic Engineering, Shinshu University, 4-17-1 Wakasato, Nagano 380-8553, Japan
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