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- W1949351812 startingPage "136" @default.
- W1949351812 abstract "Leachate from landfill sites contains high organics, chloride and ammonium nitrogen in concentration which might be potentially major pollutants to surface and groundwater environment. Most of landfill leachate treatment plants in Korea consist of biological processes to remove BOD and nitrogen. However, the efficiencies of refractory organics removal, nitrification and denitrification have not met frequently the national effluent regulation of wastewater treatment facility, especially in winter season. Simultaneous removal of organics and nitrogen from leachate is strongly necessitated to meet the national regulation on effluents from leachate treatment facilities. The intermittently aerated biological activated carbon fluidized bed(IABACFB) process was applied to treat real landfill leachates containing refractory organics and high concentration of ammonium nitrogen. The IABACFB reactor consisted of a single bed in which BAC fluidizing and an aerating column. The fluidized bed is intermittently aerated through the blower located at the aerating column. Experiments were performed to evaluate the applicability of Intermittently Aerated BACFB for simultaneous removal of refractory organic carbon and ammonium nitrogen of leachate. Organics and ammonia nitrogen(NH₄?-N) are oxidized during the aerobic stage, and nitrite-nitrate nitrogen(NO x ?-N) are removed to nitrogen gas through denitrification reaction during anoxic state. The IABACFB reactor condition reached a steady state within 40 days since the reactors had been operated. The blowing mode of 60 min.-On/60 min.-OFF is more compatible to remove TOC and NH₄?-N operated. The blowing mode of 60 min.-On/60 min.-OFF is more compatible to remove TOC and NH₄?-N simultaneously than the mode of 30 min.-On/90 min.-OFF. The average removal efficiencies of TOC, the refractory organic carbon, and the average efficiencies of nitrification and denitrification were 90%, 75%, 80%, 95%, respectively." @default.
- W1949351812 created "2016-06-24" @default.
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- W1949351812 creator A5051252092 @default.
- W1949351812 date "2005-12-30" @default.
- W1949351812 modified "2023-09-24" @default.
- W1949351812 title "간헐폭기 생물활성탄 유동상에 의한 매립지침출수 처리" @default.
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