文献类型：期刊文献

英文题名：Removal of veterinary antibiotics from swine wastewater using anaerobic and aerobic biodegradation

作者：Han, Yuefei[1];Yang, Linyan[1,2,3];Chen, Xueming[4];Cai, Yu[1];Zhang, Xinyue[1];Qian, Mengcheng[1];Chen, Xingkui[1];Zhao, Huihui[1];Sheng, Mei[1];Cao, Guomin[1,2,3];Shen, Genxiang[5]

机构：[1]East China Univ Sci & Technol, Sch Resources & Environm Engn, Shanghai 200237, Peoples R China;[2]Shanghai Inst Pollut Control & Ecol Secur, Shanghai 200092, Peoples R China;[3]East China Univ Sci & Technol, Natl Engn Lab Ind Wastewater Treatment, Shanghai 200237, Peoples R China;[4]Tech Univ Denmark, Proc & Syst Engn Ctr PROSYS, Dept Chem & Biochem Engn, DK-2800 Lyngby, Denmark;[5]Shanghai Acad Environm Sci, Shanghai 200233, Peoples R China

年份：2020

卷号：709

外文期刊名：SCIENCE OF THE TOTAL ENVIRONMENT

收录：;EI(收录号：20195207925686);WOS:【SCI-EXPANDED(收录号:WOS:000512281700062)】；

基金：This study was supported by National Water Pollution Control and Treatment Science and Technology Major Project (2017ZX07207002). The authors are grateful to the State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process in East China University of Science and Technology for the antibiotic analysis by LC-MS/MS.

语种：英文

外文关键词：Antibiotics; Swine wastewater; Anaerobic digestion; Aerobic biodegradation

摘要：High amounts of antibiotics, used in animal farms for the prevention of diseases, are released back into the natural environment with a possible risk of chronic toxicity to other organisms and the development of antibiotic-resistant genes. The antibiotics, including sulfonamides and beta-lactams, detected in swine wastewater were between 99.2 and 339.3 mu g/L. The typical on-site swine wastewater treatment process turned out to be inadequate, reflected by the high conventional contaminant and antibiotic residuals even under a long hydraulic residence time (HRT, around 2-3 months). The lab-scale combined anaerobic and aerobic biological process showed that anaerobic digestion was mainly responsible for chemical oxygen demand (COD) reduction and aerobic biodegradation contributed significantly to antibiotic removal, with overall removal efficiencies of 95% for COD and 92% for antibiotics under a short HRT of 3.3 days. The removal of selected antibiotics could be a combined result of biodegradation, the balance between adsorption and desorption, and the transformation between antibiotic metabolites and their parent antibiotics. The current work provides valuable insights into the appropriate selection and optimisation of biological processes for the treatment of typical wastewater with high COD and trace antibiotics. (C) 2019 Elsevier B.V. All rights reserved.