摘要
人工湿地处理畜禽养殖污水过程中,吸附作用为土霉素、环丙沙星和磺胺二甲基嘧啶在系统内的首要去除途径,其在3种抗生素去除过程中所占相对贡献比例分别为75%、85%和62%。水解作用为土霉素和环丙沙星在湿地中去除的次要途径,其对两者去除的贡献比例分别为21%和19%;磺胺二甲基嘧啶的次要去除途径为微生物降解作用(23%),而水解作用贡献比例仅为13%。通过对比无传统污染物添加组别分析结果,研究发现传统污染物存在不会对抗生素吸附作用产生显著影响,但土霉素和环丙沙星水解去除途径的贡献度会分别降低7%和5%,微生物降解对磺胺二甲基嘧啶的去除作用比例会提升21%。
In this paper,with the conventional pollutants addition,adsorption was found out as the main removal pathway of oxytetracycline,ciprofloxacin and sulfamethazine in the constructed wetland,and its contribution rates of that were 75%,85%and 62%,respectively.Hydrolysis was the secondary removal pathway of oxytetracycline and ciprofloxacin(21%and 19%),and biodegradation was the secondary removal pathway of sulfamethazine(23%).Compared to the treatment group without conventional pollutants addition,the effect of conventional pollutants on antibiotics adsorption was not significant,yet that could inhibit hydrolysis process of oxytetracycline and ciprofloxacin(about 7%and 5%),and conventional pollutants could enhance contribution of biodegradation for sulfamethazine(about 21%).
作者
刘琳
辛宇
姚彤
韦莉莉
刘超翔
LIU Lin;XIN Yu;YAO Tong;WEI Li-li;LIU Chao-xiang(Institute of Urban Environment,Chinese Academy of Sciences,Xiamen 361021,China;University of Chinese Academy of Sciences,Beijing 100049,China;Fujian Institute of Innovation,Chinese Academy of Sciences,Fuzhou 350002,China)
出处
《环境工程》
CAS
CSCD
北大核心
2020年第6期102-107,共6页
Environmental Engineering
基金
中国科学院战略性先导科技专项(XDA23020500)
福建省社会发展引导性项目(2018Y0083)
国家自然科学基金(51678553)。
关键词
养殖污水
人工湿地
水解
吸附
生物降解
livestock wastewater
constructed wetland
hydrolysis
adsorption
biodegradation
