文献类型：期刊文献

英文题名：The effect of nitrification inhibitors on the aerobic biodegradation of tetracycline antibiotics in swine wastewater

作者：Yang, Linyan[1,2,3];Yuan, Cheng[3];Chen, Xueming[4];Xue, Weibo[3];Cao, Guomin[1,3];Meng, Shujuan[5];Bai, Lichun[6]

机构：[1]East China Univ Sci & Technol, Natl Engn Res Ctr Ind Wastewater Detoxicat & Resou, Shanghai 200237, Peoples R China;[2]Shanghai Inst Pollut Control & Ecol Secur, Shanghai 200092, Peoples R China;[3]East China Univ Sci & Technol, Sch Resources & Environm Engn, Shanghai 200237, Peoples R China;[4]Fuzhou Univ, Coll Environm & Safety Engn, Fujian Prov Engn Res Ctr Rural Waste Recycling Tec, Fuzhou 350116, Fujian, Peoples R China;[5]Beihang Univ, Sch Space & Environm, Beijing 100191, Peoples R China;[6]Cent South Univ, Sch Traff & Transportat Engn, Key Lab Traff Safety Track, Minist Educ, Changsha 410075, Peoples R China

年份：2023

卷号：311

外文期刊名：CHEMOSPHERE

收录：;EI(收录号：20224413017820);WOS:【SCI-EXPANDED(收录号:WOS:000903944800004)】；

基金：This work was supported by the National Natural Science Foundation of China [grant number 52100085] ; the National Key R & D Program [grant number 2019YFC0408202] ; and the Natural Science Foundation of Shanghai [grant numbers 21ZR1418000, 19ZR1412800]

语种：英文

外文关键词：Tetracycline antibiotics; Aerobic biodegradation; Nitrification inhibitor; Swine wastewater

摘要：The aerobic biotreatment process for the dual goals of antibiotic removal and ammonia retainment for the fieldreturn-based treatment of swine wastewater was optimized by adding 2-chloro-6-trichloromethylpyridine (TCMP), commonly used as a nitrogen fertilizer synergist. The results show that the dosage of 5-10 mg/L TCMP daily effectively inhibited nitrification. The COD and tetracycline antibiotics (TCs) in the absence of TCMP was removed by 91% and 76%, and became 87% and 78% with 5 mg/L TCMP and 83% and 70% with 10 mg/L TCMP, respectively. The removal efficiency of four TCs generally followed a decreasing trend of chlortetracycline (CTC) > doxycycline (DC) > tetracycline (TC) > oxytetracycline (OTC). A dosage of 5 mg/L TCMP daily inhibited ammonia nitrification effectively and only slightly affected the removal of conventional organic pollutants and TCs. The contribution of volatilization and hydrolysis to the removal of TCs was negligible. The overall removal efficiency of four TCs in removal pathway experiments was 98%, 94%, 97%, and 96% for OTC, CTC, DC, and TC, of which 69%, 41%, 56%, and 62% was contributed by absorption, and 29%, 53%, 41%, and 34% was contributed by biodegradation, respectively. This study may have significant implications for the proper man-agement of livestock wastewater intended to be used as fertilizers, which aims to reduce the exposure risk of antibiotics and preserve its nutrient value.