污水处理厂挥发性有机污染物特征研究  

Study on Characteristics of Vocs in Sewage Treatment Plant

作　　者：陈芳[1] 王奕奕[1] 周姗[1] 余波[1] 阮东德[1] 

机构地区：[1]杭州市环境监测中心站,杭州310007

出　　处：《科技通报》2017年第11期261-265,共5页Bulletin of Science and Technology

基　　金：杭州市科技计划项目(20140533B05)

摘　　要：研究钱塘江流域杭州段部分污水处理厂进出水中VOCs的种类和含量。选取10家污水厂为研究对象,采用GC-MS分析水样中VOCs成分和浓度,结果表明,检出的VOCs包括卤代烃、苯系物、氯苯类和多环芳烃4类,其中进水20种、出水11种;不同污水厂、不同时期VOCs种类数和浓度差异较大,但绝大多数浓度处于较低水平;进水中VOCs含量主要由卤代烃、苯系物组成,且多数以苯系物为主,出水则以卤代烃为主,出水检出率最高的是三氯甲烷、1,2-二氯乙烷以及二氯甲烷;大多数污水厂对总VOCs去除率在77%以上;污水处理过程既消减了一些卤代烃,同时也产生一些物质,导致有一半污水厂出水中卤代烃浓度下降不多甚至不降反升。The types and contents of volatile organic pollutants of some sewage treatment plants along the Qian Tang River were studied. Select the 10 sewage treatment plant, using the method of GC-MS analysis of volatile organic compounds, the results show that the detection of VOCs type of halogenated hydrocarbons, benzene, chlorobenzene and polycyclic aromatic hydrocarbons, including 20 kinds in inlets as well as 11 in outlets, different sewage treatment plant, not at the same time, the number of species and concentration of VOCs is different, but majority of concentration at a low level; VOCs in inlets is mainly composed of halohydrocarbons, benzene, and VOCs in outlets is mainly composed of halogenated hydrocarbons, the highest detection rate in outlets is chloroform,1,2-two dichloroethane,and dichloromethane; the total VOCs effluent removal rate in most plants over 77%; the sewage treatment process not only reduces some halocarbons, also produce some substances.

关 键 词：污水厂 挥发性有机污染物 种类 浓度 

分 类 号：X832[环境科学与工程—环境工程]