对预处理过的老龄垃圾渗滤液,进行微波强化Fenton氧化法试验,考察了该处理方法对垃圾渗滤液的作用效果并分析微波作用机理.结果表明:对厌氧/好氧工艺处理过的老龄垃圾渗滤液进行微波强化Fenton氧化法处理时,在最优处理条件下COD去除率可达75.6%以上;以负载Fe2+的颗粒活性炭(GAC)为催化剂替代Fe2+,在最优条件下处理,COD去除率可达87.1%以上.当预处理后的垃圾渗滤液中含有大量(SO24-)时,微波辐射会导致Fenton氧化法的处理效果降低.微波强化Fenton氧化法处理垃圾渗滤液只起到缩短处理时间的作用,并不能提高COD去除率.对NH3-N去除率在微波辐射条件下有所提高,但是效果并不明显.%Microwave-enhanced Fenton oxidation was used to treat the pretreated mature landfill leachate. The treatment efficiency of landfill leachate and the mechanism of microwave irradiation were investigated. The results show that mature landfill leachate pretreated by anaerobic-aerobic processing is treated by microwave-enhanced Fenton oxidation, COD removal rate of which is more than 75.6 ％ under the optimal conditions. When the granular activated carbon (GAC) loaded with Fe2+ is used as catalyst, COD removal rate of mature landfill leachate is more than 87.1％ under the optimal conditions. When the pretreated landfill leachate contains large amounts of SO42-, microwave radiation can make the treatment efficiency of Fenton oxidation decrease. Microwave-enhanced Fenton oxidation can only shorten treatment time but can not improve COD removal rate in this study. NH3-N removal rate can be increased with microwave radiation, which is not obvious.
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