巢湖流域城镇污水处理厂邻苯二甲酸酯分布及迁移特征研究  

Study on distribution and migration characteristics of PAEs in the municipal wastewater treatment plants in Chaohu Lake Basin

作　　者：高连芬 齐翠翠 汤婕[3] 张敏 Gao Lianfen;Qi Cuicui;Tang Jie;Zhang Min(Anhui Provincial Ecological Environmental Monitoring Center,Hefei 230071,China;Anhui Research Academy of Ecological and Environmental Sciences,Hefei 230022,China;School of Resources and Environment,Anhui Agricultural University,Hefei 230036,China)

机构地区：[1]安徽省生态环境监测中心,安徽合肥230071 [2]安徽省生态环境科学研究院,安徽合肥230022 [3]安徽农业大学资源与环境学院,安徽合肥230036

出　　处：《能源与环保》2023年第12期82-87,93,共7页CHINA ENERGY AND ENVIRONMENTAL PROTECTION

基　　金：安徽省重点研究与开发计划项目(202004i07020006);安徽省省级环境保护科研项目(2017-09)。

摘　　要：采用固相萃取结合气相色谱—质谱联用方法分析检测巢湖流域不同城镇污水处理厂不同季节进水、出水和污泥中的邻苯二甲酸酯(PAEs)的浓度,分析了污水处理工艺技术对PAEs的去除率,研究了城镇污水处理厂PAEs的分布及迁移特征。结果表明,2个城镇污水处理厂出水中邻苯二甲酸二甲酯(DMP)、邻苯二甲酸二乙酯(DEP)、邻苯二甲酸正二丁酯(DBP)、邻苯二甲酸二(2-乙基己基)酯(DEHP)在4个季节均有检出,检出率分别为25%、75%、100%、100%,检出频次表现为DEHP>DBP>DEP>DMP。4种PAEs类物质呈现夏季出水浓度明显增加,秋季相对较低的季节特征。邻苯二甲酸酯在污水处理厂不同工艺段中有去除也有富集,处理工艺和运行参数对邻苯二甲酸酯的去除效率有重要影响。污泥中DMP、DEP、DBP、DEHP在4个季节均有检出,检出率分别为25%、75%、75%、100%,检出频次表现为DEHP>DBP=DEP>DMP。Solid-phase extraction combined with GC-MS was used to analyze and detect the concentration of PAEs in the inlet water,effluent and sludge in the municipal wastewater treatment plants in Chaohu Lake Basin in different seasons.The removal rate of PAEs caused by wastewater treatment technology was analyzed.The distribution and migration characteristics of PAEs were studied.The results showed that dimethyl phthalate(DMP),diethyl phthalate(DEP),dibutyl phthalate(DBP),and 2-ethylhexyl phthalate(DEHP)were detected in the effluent of two municipal wastewater treatment plants in four seasons,with detection rates of 25%,75%,100%,and 100%,respectively.The detection frequency was as follows:DEHP>DBP>DEP>DMP.The four PAEs showed a significant increase of water concentration in summer and relatively low in autumn.Phthalate substances were removed and enriched in the process section of the wastewater plant,and the treatment process and operating parameters have an important impact on the removal efficiency of phthalates.DMP,DEP,DBP,and DEHP were detected in sludge in all four seasons,with detection rates of 25%,75%,75%,and 100%,respectively.The detection frequency was as follows:DEHP>DBP=DEP>DMP.

关 键 词：城镇污水处理 邻苯二甲酸酯 迁移特征 

分 类 号：X798[环境科学与工程—环境工程]