Antibiotics in two municipal sewage treatment plants in Sri Lanka:Occurrence,consumption and removal efficiency

作     者：Dilanka N.D.Samaraweera Xin Liu Guangcai Zhong Tilak Priyadarshana Riffat Naseem Malik Gan Zhang Mahdi Safaei Khorram Zewen Zhu Xianzhi Peng 

作者机构：Zewen Zhu aXianzhi Peng a a State Key Laboratory of Organic GeochemistryGuangzhou Institute of GeochemistryChinese Academy of SciencesGuangzhou510640China University of Chinese Academy of SciencesBeijing100049China Faculty of Fisheries and Marine Sciences&TechnologyUniversity of RuhunaMataraSri Lanka Department of Environmental SciencesQuaid-i-Azam UniversityIslamabadPakistan 

出 版 物：《Emerging Contaminants》 (新兴污染物（英文）)

年 卷 期：2019年第5卷第1期

页      面：272-278页

学科分类：1007[医学-药学(可授医学、理学学位)] 083002[工学-环境工程] 0830[工学-环境科学与工程（可授工学、理学、农学学位）] 1004[医学-公共卫生与预防医学(可授医学、理学学位)] 1001[医学-基础医学(可授医学、理学学位)] 08[工学] 

基　　金：This work was funded by the International Partnership Program of the Chinese Academy of Sciences,(Grant No.132744KYSB20170002) UCAS scholarship for international students.The authors want to acknowledge the generous support from the National Water Supply and Drainage Board(Sewerage division),Sri Lanka and to Mr.S.M.Samaraweera for the assistance in wastewater sampling 

主　　题：Antibiotics Sewage treatment plants(STPs) Activated sludge process Constructed wetland Consumption Removal efficiency Sri Lanka 

摘      要：Most of the monitoring data on the occurrence of antibiotics in sewage treatment plants(STPs)have been reported from Europe,North America and some countries in Northeast Asia,while very limited data can be found in Southeast Asian *** a pioneering research in Sri Lanka,we collected 24 h composite wastewater samples at the influent and effluent of two municipal STPs for consecutive 7 days to investigate occurrence,consumption and removal efficiency of seventeen *** STP was located in Colombo and Hikkaduwa,respectively,representing two kinds of communities(*** and tourists)in Sri *** targeted antibiotics were extracted by solid-phase extraction method and detected on an Agilent HPLCMSMS(1290/6470QQQ).Results illustrated that the majority of the antibiotics can be always detected from both STPs,except for chlorotetracycine(CTC),doxycycline(DOX)and florfenicol(FF).Fluoroquinolones(FQs)were detected at highest concentrations with ciprofloxacin(CIP)being the dominant *** of CIP in the influent samples were in the range of 433 e6010 ng/*** consumption of antibiotics was estimated on the basis of influent mass load and catchment population *** found difference in consumption patterns between the two served *** to local people in Colombo,tourists in Hikkaduwa appeared to take more antibiotics during the study period with the estimated daily dose of 0.25 g per 1000 ***,macrolides accounted for a larger portion than FQs in Hikkaduwa,with azithromycin(AZM)being the most prevalent antibacterial *** comparison with an official report by Medical Supplies Division of Sri Lanka,we conjected that AZM was not commonly used among local people and it was mainly introduced by foreign *** for the removal efficiency,the activated sludge system of Colombo exhibited better elimination and more stable performance than the constructed wetland process of Hikkaduwa.