University Of Tehran Press Pollution 2383-451X 2 2 2016 04 01 Antibiotics Removal in Biological Sewage Treatment Plants 131 139 56942 10.7508/pj.2016.02.003 EN Gopal Ghosh 1. Research Center for Environmental Quality Management, Graduate School of Engineering, Kyoto University, Kyoto 615–8540, Japan; 2. Departments of Environmental Science and Technology, Jessore University of Science and Technology, Jessore 7408, Bangladesh S. Hanamoto Research Center for Environmental Quality Management, Graduate School of Engineering, Kyoto University, Kyoto 615–8540, Japan N. Yamashita Research Center for Environmental Quality Management, Graduate School of Engineering, Kyoto University, Kyoto 615–8540, Japan X. Huang Department of Environmental Science and Engineering, Tsinghua University, Beijing 100084, China H. Tanaka Research Center for Environmental Quality Management, Graduate School of Engineering, Kyoto University, Kyoto 615–8540, Japan Journal Article 2015 11 20 This study investigated the occurrence and removal of 12 antibiotics (ciprofloxacin, enrofloxacin, levofloxacin, norfloxacin, nalidixic acid, azithromycin, clarithromycin, roxithromycin, lincomycin, novobiocin, sulfamethoxazole, trimethoprim) at four sewage treatment plants (STPs): two STPs in Kyoto, Japan and two STPs in Beijing, China. The STPs differed in design and operation conditions, utilized a variety of secondary treatment processes. The antibiotics were frequently detected in influents and effluents, and ranged from ng/L up to lower μg/L. In influent, clarithromycin (1.1–1.6 μg/L) and levofloxacin (3.6–6.8 μg/L) were detected in the highest concentration in Japanese and Chinese STPs, respectively. The overall elimination of the antibiotics were differed between STPs and ranged from negative to >90%. These data demonstrate that there are detectable levels of antibiotics are discharging from STPs, and only some of these antibiotics are being removed in a significant proportion by STPs. It was also observed that biological nutrient removal based sewage treatment processes (anaerobic–anoxic–oxic: A2O; and anoxic–oxic: AO) have relatively higher antibiotics removal efficiencies than oxidation ditch (OD) processes. https://jpoll.ut.ac.ir/article_56942_395b58b4ce1a184748def71f03ea11b7.pdf