污水中类固醇雌激素的去除及其机理研究进展

The mechanisms of steroid estrogen removal in wastewater:A review

类固醇雌激素被认为具有极强的内分泌干扰性和生物活性,在极低浓度下就能引起人体或动物生殖障碍、行为异常和幼体变异.根据近年来全球监测数据,水体类固醇雌激素的含量已临近甚至超过动物毒理试验的警戒水平.污水处理厂是环境类固醇雌激素的主要源头之一,如何从源头控制类固醇雌激素的排放备受关注.本文将从生物降解、吸附及氧化去除三方面来阐述它们在水处理过程中降解类固醇雌激素时发挥的作用及差异,以期为今后类固醇雌激素的水处理技术研究提供基础信息.

Steroid estrogens have been recognized as a group of endocrine disrupting chemicals with strong biological activity. An extremely low level of steroid estrogens is sufficient to result in reproduction disorders, abnormal behavior, and larval mutation in both human being and animals. According to the date obtained in global survey, steroid estrogens levels in water are close to or even over the harmful levels which have been confirmed in several animal toxicological tests. Sewage treatment plant is one of the biggest sources of steroid estrogens, and therefore the mechanisms of steroid estrogens removal in wastewater have been intensively investigated during the last decades. The focus of this present prospective review will be on discussing the roles of biological degradation, sorption and advanced oxidation processes in steroid estrogens removal in the wastewater, so as to provide some valuable information for future studies.