填埋层空气状况对渗滤液中氮成分变化的影响

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填埋层空气状况对渗滤液中氮成分变化的影响
填埋层空气状况对渗滤液中氮成分变化的影响
于晓华，何品晶，邵立明，李国建
(同济大学污染控制与资源化研究国家重点实验室，上海200092)
摘要：渗滤液回灌厌氧填埋层可以有效降解渗滤液中的有机物，但却对氨氮去除无效；而且由于有机物降解的加
速，使回灌后渗滤液中氨氮的质量浓度比常规垃圾填埋场更高，从而导致渗滤液必须再经过复杂的物化处理后才
能达标排放．为此，通过实验室模拟，研究了垃圾层中空气状况对回灌渗滤液出水中氮成分变化的影响．结果表明：
只要向填埋层供给少量空气，就可有效降低渗滤液中氨氮的质量浓度，从而减轻渗滤液后续处理的压力．
关键词：垃圾填埋；通风；渗滤液；回灌；氮成分变化
中图分类号：X 705 文献标识码：A 文章编号：0253―374X(2004)06―0741―04

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Efect on Nitrogen Component in Leachate under Diferent Air
Conditions in Landfi l l Layers
yU Xiao-hua，HE Pin-ring，SHAO Li―ruing，LI Guo-jian
(StateKeyLaboratoryofPollutionControl andResourceReuse，T0n西iUniversity，Shavlghai 200092，China)
Abstract：Although leachate re．．circulating to anoxic landfill layers can accelerate the rate of decompo s・・
ing organic pollutan t in leachate，it has no effect on removing ammonia nitrogen．And it will accumulate
more ammonia nitrogen in leaehate than that in conventional landfill leaehate，thereby requiring additional
complex physical-chemical treatment prior to discharge standard．Lysimeters were established in
the laboratory to study the impact on the nitrogen conponent in leaehate re-circulating under different
air conditions in lan dfill layers．The results indicate that if only ventilating a little air，the high coneentration
of ammonia nitrogen carl be effectively reduced ．Consequently the burden on following leachate
treatment is greatly eased．
Key words：municipal solid waste landfill；ventilation；leachate；re-circulation；nitrogen componen

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填埋层空气状况对渗滤液中氮成分变化的影响.rar