典型内分泌活性化合物在全规模污水处理厂中的命运：分布、去除效率和潜在风险。
Fate of typical endocrine active compounds in full-scale wastewater treatment plants: Distribution, removal efficiency and potential risks.
机构信息
Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, Ministry of Education, Hohai University, Nanjing 210098, China; College of Environment, Hohai University, Nanjing 210098, China; Guohe Environmental Research Institute (Nanjing) Co., Ltd, Nanjing 211599, China.
Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, Ministry of Education, Hohai University, Nanjing 210098, China; College of Environment, Hohai University, Nanjing 210098, China.
出版信息
Bioresour Technol. 2020 Aug;310:123436. doi: 10.1016/j.biortech.2020.123436. Epub 2020 Apr 23.
In this study, the distribution, removal efficiency, and potential risks of 9 typical endocrine active compounds (EACs) in two full-scale wastewater treatment plants (WWTPs) were investigated. The EAC concentrations ranged from 0.2 to 7394.2 ng/L in influents. The source of influents was a critical factor in determining the EAC levels. EACs were primarily removed in the secondary biological processing units, with removal efficiencies fluctuating from 13.7% to 98%. The biological treatment processes and operating parameters (i.e., HRT and SRT) influenced the EAC removal efficiency. Bisphenol A (BPA) and estriol were mainly removed by biodegradation, while antidepressants were primarily eliminated by sludge adsorption according to the distribution patterns and mass flow of EACs in WWTPs. Novosphingobium, Saprospiraceae, etc. were the core functional bacteria for EAC biodegradation. In addition, sertraline in effluents and dewatered sludge may pose medium environmental risks, while the other EACs pose low environmental risks.
本研究调查了两座大型污水处理厂（WWTP）中 9 种典型的内分泌干扰化合物（EAC）的分布、去除效率和潜在风险。进水口的 EAC 浓度范围为 0.2 至 7394.2ng/L。进水的来源是决定 EAC 水平的关键因素。EAC 主要在二级生物处理单元中被去除，去除效率从 13.7%到 98%不等。生物处理过程和操作参数（即 HRT 和 SRT）影响 EAC 的去除效率。双酚 A（BPA）和雌三醇主要通过生物降解去除，而根据 EAC 在 WWTP 中的分布模式和质量流，抗抑郁药主要通过污泥吸附去除。新鞘氨醇单胞菌、鞘氨醇杆菌科等是 EAC 生物降解的核心功能菌。此外，污水厂出水中的舍曲林和脱水污泥可能会带来中等的环境风险，而其他 EAC 则带来低环境风险。
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