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Advanced Wastewater Treatment Using Anoxic-Aerobic Reactor Filled with Porous Media  

Kim, Dong-Ha (국민대학교 공과대학 건설시스템공학부)
Publication Information
Journal of Korean Society of Water and Wastewater / v.21, no.1, 2007 , pp. 83-89 More about this Journal
Abstract
A biological anoxic-aerobic reactor filled with porous media was operated in lab scale for the advanced wastewater treatment. The experiments were conducted for 6 months with three HRTs (4, 6, 8hr) and temperature of $23{\sim}25^{\circ}C$. Some other experimental conditions were as follows; nitrification reactor (MLSS 4,500mg/L, DO 3.3mg/L, $23{\sim}28^{\circ}C$), denitrification reactor(MLSS 8,000mg/L, ORP -100mV, Temp.$19{\sim}23^{\circ}C$). Average removal efficiencies of SS, $BOD_5$, $COD_{Cr}$, T-N, and T-P were 97.8%, 95.5%, 94.5%, 80.2%, and 60.6%, respectively. The reactor filled with porosity media showed stable removal capacity for organics and nutrients. Fast and complete nitrification and denitrification were accomplished. Maintaining high MLSS with porous media in the nitrification and denitrification reactor appears to enhance the nitrogen removal process. For the higher T-P removal, some coagulant addition process will be needed.
Keywords
porous media; nitrification; denitrification; advanced wastewater treatment;
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Times Cited By KSCI : 1  (Citation Analysis)
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