广州垃圾填埋渗滤液中有机污染物的去除效果

采用同时好氧厌氧生物反应器处理广州市大田山垃圾填埋渗滤液,平均出水浓度COD_Cr为131mg·L^-1,氨氮为7mg·L^-1,达到了同类废水的国家二级排放标准.同时选择GC-MS联用仪对垃圾渗滤液中的有机物进行测定,测得有机污染物87种,其中16种有机污染物被列入美国EPA环境优先控制污染物,31种有机物被完全去除,14种有机物去除率可达80%以上,25种有机物去除率达50%以上.

Investigation on Removal of Organic Pollutions in Landfill Leachate in Guangzhou City,China

A set of simultaneous oxic and anaerobic bioreactor was used to treat the landfill leachate generated from Datianshan Landfill in Guangzhou, China. The results demonstrate that the average effluent concentration of COD and NH4(+)-N was 129 mg x L(-1) and 10 mg x L(-1) respectively, both of them can be controlled below the Chinese second grade discharge permit levels (COD(Cr) < 300 mg x L(-1), NH4(+)-N < 25 mg x L(-1)) for this kind of wastewater. Moreover, the GC-MS analysis was used to measure the organic pollutants contained in landfill leachate. 87 kinds of organic matters in this kind of landfill leachate were detected and discovered, and 16 of them belong to the list of environmental priority pollutants which is considered by EPA in USA. As a result, 31 kinds of totally 87 kinds of organic pollutants were completely removed, 14 kinds of totally 87 kinds of organic pollutants were removed more than 80%, the removal efficiencies of 25 kinds of organic pollutants reached over 50%.