夏季潮滩对上海老港垃圾填埋场渗滤液氮、磷净化效果研究

垃圾填埋产生的渗滤液造成的环境污染问题El益严重。采用自然湿地对垃圾渗滤液净化有诸多优点，而相关的研究较少。根据渗滤液的不同浓度和不同滞留时间的净化效果不同，采用实验室模拟和培养的方法来研究老港垃圾填埋场附近潮滩对垃圾渗滤液营养盐N、P的净化效果。研究发现：夏季老港中、低潮滩在较短滞留时间（6h）内对各浓度渗滤液中N、P的净化效果不明显，而在较长滞留时间内（96h）中、低潮滩对各浓度渗滤液净化效果明显，净化后污水中N、P含量可达到排放标准；垃圾渗滤液质量分数为5％时，潮滩对N、P的净化效果最为明显。

Removal of nitrogen and phosphorus in landfill leachate in summer by the tideland near Laogang Landfill in Shanghai

In recent years,environmental problems caused by landfill leachate produced by waste landfill are becoming more and more serious.Using constructed wetland systems for landfill leachate treatment become very important and popular.There are few studies on the method of using natural wetland for landfill leachate treatment,which has many merits.Using the method of the laboratory simulation and cultivation,the effect of nitrogen and phosphorus in landfill leachate treated by tideland near Laogang Landfill is carried out in this study,based on the fact that the decontaminative effect is different with different concentration of landfill leachate and different residence time on the tideland.It's found that in summer the decontaminative effect of nitrogen and phosphorus in landfill leachate is better in the long-time(96 h) experiment than in the short-time(6 h) one,and the effluents with long-time(96 h) decontamination can reach the discharge standard.A volume of 5% of leachate in seawater is the most suitable concentration of landfill leachate for the treatment by tideland near Laogang.