Occurrence, distribution and potential affecting factors of antibiotics in sewage sludge of wastewater treatment plants in China
Occurrence, distribution and potential affecting factors of antibiotics in sewage sludge of wastewater treatment plants in China
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DOI：
10.1016/j.scitotenv.2012.12.050
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发表时间：
2013-02-15
影响因子：
9.8
通讯作者：
Cai, Yaqi
中科院分区：
文献类型：
--
作者：
Li, Wenhui;Shi, Yali;Cai, Yaqi
调查了我国23个城市45个污水处理厂污泥中8种喹诺酮类、9种磺胺类和5种大环内酯类药物的分布情况。在所有考虑的抗生素中，喹诺酮类是所有样品中检测到的主要抗生素[总浓度高达8905 μ g/kg，干重（dw）]，其次是大环内酯类（85.1 μ g/kg，dw）和磺胺类（22.7 μ g/kg，dw）。城市污泥中喹诺酮类药物的高浓度表明抗生素在我国的应用广泛，污染面广。45个污水处理厂污泥样品中抗生素的总浓度存在显着差异。为了评估影响污泥中抗生素水平的潜在因素，对污水和污泥特性以及污水处理厂的运行条件和处理技术进行了研究。结果表明，污泥中抗生素的含量在很大程度上取决于废水的性质。总有机碳（TOC）与抗生素总浓度之间也存在显著相关性，表明TOC在一定程度上影响污泥对抗生素的吸附能力。此外，处理技术和污泥中抗生素的总浓度之间的关系表明，污泥中的抗生素水平随着固体停留时间的延长而增加。(C)2012爱思唯尔有限公司版权所有。
The occurrence and distribution of eight quinolones, nine sulfonamides, and five macrolides were investigated in sewage sludge from 45 wastewater treatment plants in 23 cities in China. Among all the antibiotics considered, quinolones were the dominant antibiotics detected in all samples [total concentrations up to 8905 mu g/kg, dry weight (dw)], followed by macrolides (85.1 mu g/kg, dw), and sulfonamides (22.7 mu g/kg, dw). High concentrations of quinolones in sewage sludge indicated that antibiotics are widely used and extensive pollutants in China. Significant differences were observed for the total concentrations of antibiotics in sludge samples among the 45 WWTPs. To evaluate the potential factors affecting the antibiotic levels in sewage sludge, wastewater and sludge characteristics, as well as the operational conditions and treatment techniques in WWTPs were investigated. The results indicated that the antibiotic levels in sewage sludge depend to a great extent on wastewater characteristics. Significant correlation between total organic carbon (TOC) and total concentrations of antibiotics was also found in studied WWTPs, indicating that TOC could affect the sludge adsorption capability to the antibiotics to some extent. Moreover, the relation between treatment techniques and the total concentrations of antibiotics in sludge showed that antibiotic levels in sludge increased with longer solid retention time. (C) 2012 Elsevier B.V. All rights reserved.