污水中类固醇雌激素污染及其生物降解研究进展  

Advances in the research of the pollution and biodegradation of steroid estrogens in sewage treatment

作　　者：冯丽娟[1] 朱亮[1] 徐向阳[1,2,3] 

机构地区：[1]浙江大学环境工程系,杭州310058 [2]浙江大学-西澳大学水环境综合管理与保护联合研究中心,杭州310058 [3]农业面源污染控制重点开发实验室,杭州310058

出　　处：《安全与环境学报》2011年第5期52-57,共6页Journal of Safety and Environment

基　　金：国家科技支撑计划项目(2006BAJ08B01);浙江省科技厅重大专项(2008C13007;2008C13020);国家水体污染控制与治理科技重大专项(2008ZX07316-002)

摘　　要：从类固醇雌激素性质与危害人手,分析了不同地区污水处理厂与河流中类固醇雌激素的污染现状,综述了类固醇雌激素生物降解及其主要影响因素,并对今后的相关研究方向进行了展望。The present paper is aimed to make a detailed review of the advances in the research of the pollution and biodegradation of steroid estrogens in sewage treatment. As a matter of fact, the pres- ence of estrogenic compounds in the environment has become a major world-wide growing concern, while the steroid estrogens estrone （El）, 17- estradiol （E2）, estriol （E3） and 17a-ethinylestradiol （EE2） exhibit the highest estrogenic activity. Steroid estrogens, as we know, are able to produce endocrine disruption in living organisms at nanogram-per-liter levels （ e. g. 17a-ethinylestradiol （ EE2 ） with 0.1 ng/L having estrogen activity for aquatic creatures）. In both hu- mans and animals, steroid estrogens are excreted in urine and feces, and then penetrate into the water environment mainly through dis- charge from STPs. According to the investigations of hundreds of STPs and rivers, steroid estrogens can frequently be found in the effluent of STPs and water environment at the range of 0.04- 65.0 （ng/L）. In STPs. however, removing the steroid estrogens from the water or soil environment depends on the type of the treating process and other dif- ferent factors, such as the sludge characteristics, hydraulic rotention time （HRT）, sludge retention time （SRT） and dissolved oxygen （DO）. Therefore, the rate of steroid estrogens removal may vary from 59% to 100% in STPs with different biological treatments, at the same time, the steroid estrogens could be removed via the sorption and biodegradation, with the microbial degradation being the main re- moral mechanism. A large diversity of genera related to steroid estro- gens degradation are isolated from the activated sludge in STPs, in- cluding a-Proteobacteria , β-Proteobacteria, γ-Proteobacteria , Acti- nobacteria, Firmicutes, etc. Thus, it is important to enrich the vari- ety of bacteria in biological treatment for high removal efficiencies of the compound. In summary, due to the unstable effluent of steroid e- strogens from the current

关 键 词：环境工程学 类固醇雌激素 污水处理 生物降解 影响因素 

分 类 号：X703[环境科学与工程—环境工程]