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KMID : 1024520030120010055
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Journal of the Environmental Sciences
2003 Volume.12 No. 1 p.55 ~ p.61
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The Operating Characteristics of SMMIAR process for Biological Nitrogen.phosphorus Removal
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Kim Hong-Tae
Kim Hak-Seok
Kim Gyu-Chang
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Abstract
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This study was carried out to obtain the operating characteristics of SMMIAR process for biological nitrogenㆍphosphorus removal. SMMIAR was operated at HLR(Hydraulic loading rate) of 39.6, 52.8, 63.4 and 79.2 //d respectively and the operating parameters such as intermittent aeration time ratio of aerobic/anoxic, DO and microorganism concentration were changed to confirm the optimum operating condition. The concentrations of the wastewater BOD, TN(Total nitrogen) and TP(Total phosphorus) were 150, 30 and 7.5mg/ respectively. Achieving better removal efficiencies of BOD, TN and TP up to 90, 85.4 and 95.4% respectively, we must keep in operation condition of SMMIAR by 0.75 of time ratio of aerobic/anoxic and by minimum 45 minutes of oxic period simultaneously.
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KEYWORD
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SMMIAR process, HLR, Intermittent Aeration, Media
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