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KMID : 1024520030120040427
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Journal of the Environmental Sciences
2003 Volume.12 No. 4 p.427 ~ p.437
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A study on the small sewerage system using SBR process
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Park Min-Jeong
Kim Dong-Seog
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Abstract
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An evaluation of the application of SBR and biofilm en small sewerage system was conducted. A newly developed small sewerage system, using SBR, was successfully applied to the nutrient treatment using municipal wastewater. The system was consisted of 6 compartments. Two systems, with SBR (A type) or without SBR (B type), were compared by several parameters (COD, SS, T-N, NH+/-N, NO-/-N, NO -/-N, alkalinity, pH, DO) in all experimental periods. Also, the time variation of several parameters (DO, pH, NH+/-N, NO-/-N NO-/-N) was examined in a SBR applied sewerage system. T-N removal efficiency of B type Was higher than that Of A type by the effect of nitrification and denitrification even though the COD removal efficiencies were similar. In aeration stage, the pH was decreased from 6.4 to 6.3 within 1 h and increased to 6.65 at the end of aerobic stage, and pH was decreased to 6.2 in non-aeration stage, and these phenomena were explained. The effects of nitrification and denitrification were compared in A type and B type sewerage system, and the typical nitrification and denitrification were observed in B type sewerage system.
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KEYWORD
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Small sewerage system, SBR, Biofilm, Nutrient removal, DO, pH
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