University of Poitiers, UMR CNRS 7285 IC2MP, Department of Water and Geochemistry, ENSIP, 1 Rue Marcel Doré, TSA 41105, 86073 Poitiers Cedex, France.
University of Limoges, INSERM UMR-S1092, Faculté de Médecine, 2 rue du Docteur Marcland, 87065 Limoges Cedex, France; University of Limoges, GRESE EA4330, ENSIL, 16 rue Atlantis, 87068 Limoges Cedex, France.
Sci Total Environ. 2017 Feb 1;579:1387-1398. doi: 10.1016/j.scitotenv.2016.11.136. Epub 2016 Nov 29.
Wastewater treatment plants (WWTPs) are one of the main sources of pharmaceutical residue in surface water. Epilithic biofilms were collected downstream from 12 WWTPs of various types and capacities to study the impacts of their discharge through the changes in biofilm composition (compared to a corresponding upstream biofilm) in terms of pharmaceutical concentrations and bacterial community modifications (microbial diversity and resistance integrons). The biofilm is a promising indicator to evaluate the impacts of WWTPs on the surrounding aquatic environment. Indeed, the use of biofilms reveals contamination hot spots. All of the downstream biofilms present significant concentrations (up to 965ng/g) of five to 11 pharmaceuticals (among the 12 analysed). Moreover, the exposition to the discharge point increases the presence of resistance integrons (three to 31 fold for Class 1) and modifies the diversity of the bacterial communities (for example cyanobacteria). The present study confirms that the discharge from WWTPs has an impact on the aquatic environment.
污水处理厂（WWTP）是地表水药物残留的主要来源之一。从 12 个不同类型和处理能力的 WWTP 下游采集了附生生物膜，以研究通过排放对生物膜组成（与相应的上游生物膜相比）的影响，从而评估它们对周围水生态环境的影响，具体表现为药物浓度和细菌群落变化（微生物多样性和抗性整合子）。生物膜是评估 WWTP 对周围水生态环境影响的有前途的指标。事实上，使用生物膜可以揭示污染热点。所有下游生物膜都存在显著浓度（高达 965ng/g）的五种到十一种药物（在分析的 12 种药物中）。此外，接触排放点会增加抗性整合子的存在（1 类抗性整合子增加 3 到 31 倍），并改变细菌群落的多样性（例如蓝藻）。本研究证实，WWTP 的排放对水生态环境有影响。
