Xie Ya-Wei, Yu Chi-Sheng, Li Fei-Fei, Yao Peng-Cheng, Liu Hong-Yuan
College of Civil Engineering, Zhejiang University of Technology, Hangzhou 310023, China.
College of Environmental Science and Engineering, Qingdao University, Qingdao 266071, China.
Huan Jing Ke Xue. 2021 Jan 8;42(1):315-322. doi: 10.13227/j.hjkx.202005304.
Antibiotics and antibiotic resistance genes (ARGs) are highly concerning emerging polltants. Wastewater treatment plants (WWTPs) are considered to be one of the most important anthropogenic sources of antibiotics and ARGs in the environment. Six WWTPs of a city were selected to investigate the antibiotics and ARGs in the influents and effluents, respectively. In total, 73 kinds antibiotics belonging to 7 classes were detected in WWTPs. The total concentration of those antibiotics ranged between 490.2-2288.6 ng·L, and ofloxacin, maprofloxacin, and roxithromycin were the most frequently detected antibiotics in the influents. A dramtic difference was observed in the antibiotic removal efficiency among the WWTPs, and the total antibiotic concentration in the effluents ranged between 260.2-1464.3 ng·L. Macrolides and quinolones are the main classes in the effluents, and the antibiotic concentration in the effluents was higher than that in the influents. Ten kinds of ARGs were detected in the WWTPs. Among these, was the most widely prevalent with an absolute abundance of 2.4×10-5.4×10 copies·mL. No significant difference in ARG abundance was observed between industrial wastewater and domesic wastewater. Furthermore, the correlation between ARG abundance and antibiotic concentrations weakened after treatment in the WWTPs.
抗生素和抗生素抗性基因（ARGs）是备受关注的新型污染物。污水处理厂（WWTPs）被认为是环境中抗生素和ARGs最重要的人为来源之一。选取了某城市的6座污水处理厂，分别对其进水和出水中的抗生素和ARGs进行调查。污水处理厂中共检测出7类73种抗生素。这些抗生素的总浓度在490.2 - 2288.6 ng·L之间，其中氧氟沙星、马波沙星和罗红霉素是进水中最常检测到的抗生素。各污水处理厂的抗生素去除效率存在显著差异，出水抗生素总浓度在260.2 - 1464.3 ng·L之间。大环内酯类和喹诺酮类是出水中的主要类别，出水中的抗生素浓度高于进水。在污水处理厂中检测到10种ARGs。其中，[此处原文缺失具体基因名称]最为普遍，绝对丰度为2.4×10 - 5.4×10拷贝·mL。工业废水和生活污水中的ARGs丰度未观察到显著差异。此外，污水处理厂处理后ARGs丰度与抗生素浓度之间的相关性减弱。
