Spatial distribution and removal performance of pharmaceuticals in municipal wastewater treatment plants in China
Spatial distribution and removal performance of pharmaceuticals in municipal wastewater treatment plants in China
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DOI：
10.1016/j.scitotenv.2017.02.107
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发表时间：
2017-05-15
影响因子：
9.8
通讯作者：
Lam, Paul K. S.
中科院分区：
文献类型：
--
作者：
Liu, Hou-Qi;Lam, James C. W.;Lam, Paul K. S.
城市污水处理厂（WWTPs）是释放到环境中的药物的重要来源。了解各种药物如何在WWIP中分配和处理是优化其减排的先决条件。本文研究了中国污水处理厂中药物的空间分布和去除效率.共35个药物的废水样品中的12个WVVTP在中国不同的城市进行了分析。在这些检测到的药物中，咖啡因的浓度最高（高达1775.98 ng L-1）的WIMP进水。此外，有显着的区域差异，在WVtrFP检测到的总药物浓度较高的进水浓度在北方城市比南方的药物分布。最先进的处理工艺在去除药物方面通常效率低下。只有14.3%的药物被有效去除（平均去除率> 70%），而51.4%的药物去除率低于30%。厌氧/缺氧/好氧（AA 0）-膜生物反应器（MBR）组合工艺和序批式活性污泥法（SBR）的处理效果优于MO和氧化沟（OD）工艺，其中氧氟沙星、红霉素-H2O、克拉霉素、罗红霉素和磺胺甲基异恶唑等5种抗生素的生态风险较高或中等，值得特别关注。(C)2017爱思唯尔B. V.保留所有权利。
Municipal wastewater treatment plants (WWTPs) are an important source of pharmaceuticals released into the environment. Understanding how various pharmaceuticals are distributed and handled in WWIPs is a prerequisite to optimize their abatement. Here we investigated the spatial distribution and removal efficiencies pharmaceuticals in China's WWTPs. A total of 35 pharmaceuticals in wastewater samples from 12 WVVTPs at different cities of China were analyzed. Among these detected pharmaceuticals, caffeine showed the highest concentration (up to 1775.98 ng L-1) in the WIMP influent. In addition, there were significant regional differences in pharmaceutical distribution with higher influent concentrations of total pharmaceuticals detected in WVtrFPs in the northern cities than the southern ones. The state-of-the-art treatment processes were generally inefficient in removing pharmaceuticals. Only 14.3% of pharmaceuticals were removed effectively (mean removal efficiency > 70%), while 51.4% had a removal rate of below 30%. The anaerobic/anoxic/oxic (AA0)-membrane bioreactor (MBR) integrated process and sequencing batch reactor (SBR) showed better performance than the MO and oxidation ditch (OD) processes:Ofloxacin, erythromycin-H2O, clarithromycin, roxithromycin and sulfamethoxazole in WWlP effluents exhibited a high or medium ecological risk and deserved special attention. (C) 2017 Elsevier B.V. All rights reserved.