赵静,
刘亿鑫,
邵征,
张新,
丁倩,
刘薇
大连理工大学环境学院, 工业生态与环境工程教育部重点实验室, 大连 116024

作者简介: 赵静(1992-),女,硕士研究生,研究方向为环境毒理学,E-mail:zhaocui@mail.dlut.edu.cn.

基金项目: 国家重点研发计划项目(2016YFC0401108)


中图分类号: X171.5

Variation in Estrogenic Activity during Secondary Treatment and Advanced Treatment Process in Municipal Wastewater Plant and Reclaimed Water Plant

Zhao Jing,
Liu Yixin,
Shao Zheng,
Zhang Xin,
Ding Qian,
Liu Wei
School of Environmental Science & Technology, Key Laboratory of Industrial Ecology and Environmental Engineering, Ministry of Education, Dalian University of Technology, Dalian 116024, China

CLC number: X171.5

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摘要:环境雌激素污染与野生动物性别比例和繁殖密切相关，是人体生殖功能紊乱、发育异常、心血管疾病和癌症发生等的重要因素之一。针对污水处理厂排水造成的环境雌激素污染，采用重组酵母菌方法研究大连、沈阳、哈尔滨和天津的5个典型城市污水厂和再生水厂水处理过程中雌激素活性的变化规律，分析二级处理和再生水厂三级处理对环境雌激素的削减效率。4个采用活性污泥法和紫外消毒工艺的污水厂出水的雌激素当量(EEQ)为0.5～1.5 ng L^?1。再生水厂三级处理工艺的出水雌激素活性低于检测限(0.02 ng L^?1)。分级组分测试结果显示，污水雌激素活性主要由强极性组分和弱极性组分引起，紫外消毒后强极性组分雌激素活性升高。4个城市污水处理厂一级处理和活性污泥处理对环境雌激素的削减率为46%～81%，紫外消毒的削减率为5.2%～22%。某再生水厂混凝、微滤和反渗透对环境雌激素的削减率分别为63%、16%和98%。研究表明，活性污泥法二级处理排水回用仍造成一定程度环境雌激素污染，三级处理工艺可有效提高环境雌激素污染物削减率。
关键词: 环境雌激素/
重组酵母菌/
紫外消毒/
二级处理/
三级处理

Abstract:The environmental estrogen contamination is one of the important factors causing human reproductive dysfunction, dysplasia, cardiovascular disease and cancer. Activities of environmental estrogen are closely related to sex ratio and reproduction of wild animals. To monitor the discharges of environmental estrogens from wastewater treatment, we tested variations in estrogenic activity during treatment in four municipal wastewater treatment plants (WWTPs) and one reclaimed water plant in Dalian, Shenyang, Harbin and Tianjin by using a human estrogen receptor recombinant yeast assay. In addition, we evaluated the capabilities of secondary treatment for environmental estrogen removal in WWTPs and the reclaimed water plant as well as the capabilities of tertiary treatment in reclaimed water plant. The estrogen equivalent (EEQ) of the effluents from four WWTPs employing activated sludge and UV disinfection ranged from 0.5 to 1.5 ng L^?1. After tertiary treatment process in the reclaimed water plant, estrogen activity of the effluent was below the method detection limit (0.02 ng L^?1). The analysis results of the fractional components showed that the estrogenic activities of water samples were mainly caused by strong polar and weak polar components, and the estrogenic activities in the strong polar component increased after UV disinfection. The removal of environmental estrogen in the primary and activated sludge treatment processes of four WWTPs were in the range of 46%～81%, with removal ranging from 5.2% to 22% by UV disinfection process. The reductions in environmental estrogen by coagulation, microfiltration and reverse osmosis were 63%, 16% and 98% in the reclaimed water plant. The results of the present study suggested that the discharging effluents from activated sludge treatment would result in pollution of environmental estrogens to some extent, whereas tertiary treatment is effective to improve the removal of these pollutants.
Key words:environmental estrogen/
recombinant yeast/
UV disinfection/
secondary treatment/
tertiary treatment.

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