中文摘要：

药物和个人护理用品（PPcPs）是一类新兴污染物，三氯生（Tcs）属于PPcPs中的杀菌消毒物质。三氯生在水环境中被广泛检出，地表水中三氯生与甲基三氯生的浓度从ng／L级到斗g／L级，水环境中的Tcs具有生态毒性。污水厂进水中Tcs浓度一般为μg/g，L级，出水浓度ng/L级。城市污水处理系统对三氯生的去除主要是吸附与生物降解。三氯生在降解过程中形成甲基三氯生，其代谢产物形成机制与降解关键影响因素需要进一步研究。为了减少三氯生在环境中的积累，需要对污水厂尾水进一步深度处理，剩余污泥也做好相关处置问题，减轻其对生态系统的潜在危害。

英文摘要：

Pharmaceuticals and personal care products （PPCPs） is a kind of emerging contaminants. Triclosan （TCS） is one of the most widely used antimicrobial agents, which is an emerging contaminant. TCS has been detected widely in the aquatic environment. The concentration of triclosan and methyl triclosan was from ng/L to μg/L in surface water. TCS poses a number of harmful effects on aquatic environmental and ecosystem. The influent concentration of TCS in the wastewater treatment plant was generally Ixg/L level, and the effluent concentration was ng/L level. The removal of TCS in municipal wastewater treatment plant was mainly by adsorption and biodegradation. Methyl triclosan was formed in the process of TCS degradation. The formation mechanism of metabolites and the key factors affecting TCS degradation need further study. In order to reduce the accumulation of TCS in the environment, it is necessary to further treatment of the effluent in wastewater treatment plant, and pay attention to the disposal of excess sludge. It is helpful to reduce the potential harm of TCS to the ecosystem.