生态与农村环境学报2025，Vol.41Issue(6)：814-823,10.DOI:10.19741/j.issn.1673-4831.2024.0389
苏北某市典型污水排放源夏季抗生素的残留特征与生态风险评估
Residual Characteristics and Ecological Risk Assessment of Antibiotics in Typical Sewage Discharge Sources in Northern Jiangsu,China,During Summer
摘要
Abstract
Wastewater is the primary source of environmental pollutants,particularly antibiotics.Clarifying their residual characteristics and ecological risks is crucial for safeguarding water quality and human health and has garnered widespread global attention.However,the complexity of wastewater sources and the diversity of antibiotics make their residual charac-teristics and ecological risks unclear.Concentrations of major antibiotics were investigated in eight typical sewage discharge sources(one rural source,three urban sewage treatment plants,a chemical industrial park,a hospital,a chicken farm,and a cattle farm)in northern Jiangsu Province,China.This study evaluated the removal efficiency of antibiotics by treat-ment processes and the ecological risks posed by antibiotics in effluents.Results show that 29 antibiotics from five catego-ries were detected in the eight sources:including eight fluoroquinolones,13 sulfonamides(SAs),four tetracyclines,two penicillins,and two macrolides,with a detection rate of 12.5%-100%.The detection rates of ofloxacin(OFX),sulfame-thoxazole,and doxycycline(DOX)is 100%.Total antibiotic concentration ranged from 303.41 to 7 414.71 ng·L-1,with the highest concentration observed at the cattle farm.Individual antibiotic concentrations varied from 0.00 to 3 482.00 ng·L-1,with the highest concentration detected for DOX at the chicken farm.The sewage treatment systems removed 82.13%to 96.43%of antibiotics,with the highest removal efficiency in the chemical industrial park.This system was particularly effective at removing SAs,whereas other sources showed lower SAs removal efficiencies.Risk quotient sum(RQsum)of antibiotics in the eight sewage sources ranged from 3.57 to 143.80,indicating high ecological risk levels.A-mong them,RQsum value for OFX exceeded1 across all eight sources,contributing 7.22%-84.72%to RQsum,emphasi-zing the need for further attention.The findings provide valuable data to support the management of effluents from sewage treatment plants,optimization of sewage treatment processes,and prevention and control of antibiotic pollution.关键词
污水排放源/抗生素/氧氟沙星/去除率/生态风险Key words
sewage discharge source/antibiotics/ofloxacin/removal rate/ecological risk分类
资源环境引用本文复制引用
李金凤,崔键,高方述,丁程成,张祯,刘晓静,常雅军,姚东瑞..苏北某市典型污水排放源夏季抗生素的残留特征与生态风险评估[J].生态与农村环境学报,2025,41(6):814-823,10.基金项目
江苏省植物资源研究与利用重点实验室开放基金(JSPKLB202210) （JSPKLB202210）
江苏省中国科学院植物研究所博士人才科研启动基金项目(JIBTF202109) （JIBTF202109）
