毒性鉴别评价方法对城镇污水处理厂去除水中有毒物质的分析实例  

A CASE STUDY ON THE EVALUATION OF CITY EFFLUENTTREATMENT SYSTEM BY TIE

作　　者：程静[1] 金洪钧[1] 沈毅[1] 崔玉霞[1] 于红霞[1] 冯建坊[1] 曹洪涛[2] 

机构地区：[1]南京大学环境学院 [2]常州市排水管理处

出　　处：《环境化学》2001年第5期490-496,共7页Environmental Chemistry

基　　金：江苏省自然科学基金重点项目(BK99205)

摘　　要：以江苏省常州市城北污水处理厂的进水、活性污泥处理系统的出水以及Ａ２Ｏ处理工艺的出水为研究对象,对进出水进行Ｄａｐｈｎｉａｍａｇｎａ急性毒性试验,结果表明,进水对Ｄａｐｈｎｉａｍａｇｎａ具有２４ｈ急性毒性,经过活性污泥处理工艺处理及Ａ２Ｏ处理工艺处理,两股出水均不显示２４ｈ急性毒性．采用毒性鉴别评价(ＴｏｘｉｃｉｔｙＩｄｅｎｔｉｆｉｃａｔｉｏｎＥｖａｌｕａｔｉｏｎ,ＴＩＥ)方法对进水进行监测和评价．发现曝气可去除进水的毒性,Ｃ１８固相提取亦可去除进水毒性,进水中存在的主要毒物为易挥发的非极性有机化合物．进一步检测可知,进水中的关键毒物主要为邻丙基苯甲醛肟、１,１－二甲基乙基－２－甲氧基苯酚、２－氮,氮二甲基苯甲醇等．此外,对２个处理系统出水进行ＧＣ/ＭＳ分析,可知出水中关键毒物基本被去除．In this study,complex mixture,activated sludge outlet water and A2O outlet water in waste-water treatment plant of Changzhou were selected as study obejects.Toxicity identification evaluation(TIE) was used to identify the key toxicants in wastewater.The results showed that complex mix-ture had 24h acute toxicity to Daphnia magna.Additionally,because the Toxicity of effluent couldbe removed by air-pumped and also be removed by C18 solid-extracted, the main toxicants in com-plex mixture were non-polat organic compounds.Additionally,the results of toxicity test and GC/MS analysis showed that the key toxicants in out-water of two systems were almost removed.

关 键 词：毒性鉴别评价 城镇污水处理厂 废水处理 有毒物质 

分 类 号：X703[环境科学与工程—环境工程]