垃圾渗滤液好氧生物处理技术研究

垃圾渗滤液是在城市垃圾的填埋过程中所产生的污染性很强的有机废水,其含有很高的COD(化学需氧量)和氨离子,是目前城市特别是居民小区的主要污染源之一。本试验以望城县黑糜峰垃圾填埋场采集的渗滤液为研究对象,把采集自黑糜峰填埋场污水排出口的好氧微生物,经过多次分离纯化后添加渗滤液,并加以物化处理作对比,以COD为评价指标,测定纯化后菌株处理渗滤液的效果。经过5次纯化后的菌株降解渗滤液的COD为242.64mg/L,加以物化方法预处理后的COD为113.97mg/L,达到国家城镇污水处理厂污染物排放三级标准。试验结果表明与物化处理相结合时菌株有较好的处理效果。

Studies on the treatment of landfill leachate by aerobic biological technique

The landfill leachate is the strong contaminated wastewater which produced in the garbage covering process. The leachate contains high COD (chemical oxygen demand) and ammonium ions, which is one of the most important contaminations in cities and especially residential areas currently. In this paper, the leachate obtained from Heimifeng landfill plant was using as the study object, via the treatment of the purified aerobic microorganism lived in the wastewater drain pipe collected from Heimifeng landfill plant and chemistry-physical treatment together, the COD was detected to compare the different effects. The COD of the leachate treated by strain purified 5 times was 242.64 mg/L and was 113.97 mg/L pre-treated by chemistry-physical method, which reached the third discharge standard of pollutants for municipal wastewater treatment plant. The final result indicates the a better effect when the chemistry-physical treatment combined with the treatment of the strain.