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低氨氮垃圾渗滤液中有机污染物厌氧氨氧化处理
REMOVAL EFFECT OF ORGANIC POLLUTANTS IN LANDFILL LEACHATE OF LOW AMMONIUM NITROGEN BY ANAMMOX
【摘要】 采用上流式厌氧污泥床处理某垃圾填埋场渗滤液.实验结果表明,在厌氧氨氧化活性稳定后,反应器对氨氮、亚硝氮具有较好的处理效果,氨氮和亚硝氮的平均去除率分别达到98.42%和99.01%,相应的平均容积去除负荷分别为93.64mg.l-1.d-1和127.57mg.l-1.d-1,COD的平均去除率为23.51%,平均容积去除负荷为84.53mg.l-1.d-1.通过GC-MS总共检测出48种主要有机污染物,其中14种有机物的去除率为100%,2种有机物的去除率介于90%和100%之间,7种有机物的去除率介于50%和90%之间,此外还有13种有机物去除率低于50%.反应中亚硝氮和氨氮的去除率比值为1.37,反应器中存在厌氧氨氧化和反硝化的协同作用.
【Abstract】 Effect of anaerobic ammonium oxidation on landfill leachate had been researched in the paper.It had been demonstrated that well removal effect of NH3-N and NO2-N could be reached in the upflow anaerobic sludge blanket,corresponding to the average removal efficiencies of NH3-N and NO2-N being 98.42% and 99.01%,together with their average volume removal loads being 93.64 mg·l-1·d-1and 127.57 mg·l-1· d-1,respectively.The mean removal efficiency of COD was only 23.51% during the experimental period.48 kinds of organic matters had been detected by gas chromatograph-mass spectrometer method.Among of them,removal efficiencies of 14 kinds organic compounds were achieved 100%,removal efficiencies of 2 kinds organic compounds were 90%—100% and the removal efficiencies of 7 kinds organic compounds were 50%—90%.Moreover,there still had 14 kinds organic compounds which removal efficiencies were below 50%.It had been indicated that there had synergistic effect of anaerobic ammonium oxidation and denitrification in the reactor,for the ratio of NO2-N removal to NH3-N removal being 1.37.
【Key words】 leachate; upflow anaerobic sludge blanket; anaerobic ammonium oxidation; organic pollutant;
- 【文献出处】 环境化学 ,Environmental Chemistry , 编辑部邮箱 ,2009年04期
- 【分类号】X703
- 【被引频次】10
- 【下载频次】447