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Advanced removal of organic and nitrogen from ammonium-rich landfil leachate using an anaerobic-aerobic system 被引量:4

高氨氮垃圾渗滤液厌氧-好氧工艺除有机物及深度脱氮(英文)
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摘要 A novel system coupling an up-flow anaerobic sludge blanket(UASB) and sequencing batch reactor(SBR) was introduced to achieve advanced removal of organic and nitrogen from ammonium-rich landfill leachate. UASB could remove 88.1% of the influent COD at a volumetric loading rate of 6.8 kg COD·m-3·d-1. Nitritation–denitritation was responsible for removing 99.8% of NH+4-N and 25% of total nitrogen in the SBR under alternating aerobic/anoxic modes. Simultaneous denitritation and methanogenesis in the UASB enhanced COD and TN removal, and replenished alkalinity consumed in nitritation. For the activated sludge of SBR, ammonia oxidizing bacteria were preponderant in nitrifying population, indicated by fluorescence in situ hybridization(FISH) analysis. The Monod equation is appropriate to describe the kinetic behavior of heterotrophic denitrifying bacteria,with its kinetic parameters determined from batch experiments. A novel system coupling an up-flow anaerobic sludge blanket(UASB) and sequencing batch reactor(SBR) was introduced to achieve advanced removal of organic and nitrogen from ammonium-rich landfill leachate. UASB could remove 88.1% of the influent COD at a volumetric loading rate of 6.8 kg COD·m-3·d-1. Nitritation–denitritation was responsible for removing 99.8% of NH+4-N and 25% of total nitrogen in the SBR under alternating aerobic/anoxic modes. Simultaneous denitritation and methanogenesis in the UASB enhanced COD and TN removal, and replenished alkalinity consumed in nitritation. For the activated sludge of SBR, ammonia oxidizing bacteria were preponderant in nitrifying population, indicated by fluorescence in situ hybridization(FISH) analysis. The Monod equation is appropriate to describe the kinetic behavior of heterotrophic denitrifying bacteria,with its kinetic parameters determined from batch experiments.
出处 《Chinese Journal of Chemical Engineering》 SCIE EI CAS CSCD 2015年第6期1047-1051,共5页 中国化学工程学报(英文版)
基金 Supported by the National Natural Science Foundation of China(51168028,51168027) Science and Technique Foundation Project for Youth of Gansu Province(1107RJYA279)
关键词 Landfill leachate Nitrogen removal Denitritation Monod model Fluorescence in siru hybridization 厌氧-好氧 填埋场渗滤液 有机氮 系统 UASB反应器 短程硝化反硝化 升流式厌氧污泥床 SBR工艺
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