论文部分内容阅读
阐述了内分泌干扰作用最强且生态风险最大的类固醇雌激素17α-乙炔基雌二醇(EE2)的国内外研究历程及成果,及其在污水处理中的迁移转化和去除机理.结果表明,常规污水处理过程中,EE2主要通过污泥吸附和生物降解2种途径去除,EE2首先通过污泥吸附从水相迅速转移至活性污泥絮体内,而后通过生物降解被最终去除;其中,生物硝化作用对EE2的生物降解和去除起到重要作用,强化硝化作用可在一定程度上利于EE2的去除.认为未来应着重研究EE2的生物降解机理,探索其高效降解菌,并开发能高效去除EE2且脱氮除磷的活性污泥工艺.“,”The research process and achievements of 17α-ethinylestradiol (EE2),one of the steroid estrogen,with the strongest endocrine disrupting effect and ecological risk,and the removal and mechanism of EE2 in wastewater treatment processes were illustrated.Sludge sorption and biodegradation,the two main processes of removal of EE2 in conventional wastewater treatment were reviewed.EE2 was firstly transferred into activated sludge rapidly by sludge sorption from the aqueous phase,and then removed by biodegradation finally.Nitrification can play an important role in the biodegradation and removal of EE2.The biodegradation mechanism of EE2 should be much focused on,and efficient degradation bacterias of EE2 should be explored,in order to develop new wastewater treatment processes for the efficient removal of EE2 end nitrogen and phosphorus at the same time.