文献类型：期刊文献

英文题名：The role of nitrification inhibitors on the removal of antibiotics in livestock wastewater by aerobic biodegradation

作者：Yang, Linyan[1,2];Zhu, Lin[1,2];Chen, Xueming[3];Meng, Shujuan[4];Xie, Yingqi[1,2];Sheng, Mei[1,2];Cao, Guomin[1,2]

机构：[1]East China Univ Sci & Technol, Natl Engn Lab Ind Wastewater Treatment, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, Sch Resources & Environm Engn, Shanghai 200237, Peoples R China;[3]Fuzhou Univ, Coll Environm & Resources, Fujian Prov Engn Res Ctr Rural Waste Recycling Te, Fuzhou 350116, Fujian, Peoples R China;[4]Beihang Univ, Sch Space & Environm, Beijing 100191, Peoples R China

年份：2022

卷号：806

外文期刊名：SCIENCE OF THE TOTAL ENVIRONMENT

收录：;EI(收录号：20213910933695);WOS:【SCI-EXPANDED(收录号:WOS:000709141800003)】；

基金：This study was supported by National Key R&D Program (2019YFC0408202) and National Water Pollution Control and Treatment Science and Technology Major Project (2017ZX07207002).

语种：英文

外文关键词：Antibiotics; Aerobic biodegradation; Nitrification inhibitors; Livestock wastewater; Pilot study

摘要：An optimized aerobic-based treatment method that effectively removes antibiotics and retains ammonia is urgently needed for the field-return-based management of livestock wastewater. Allylthiourea (ATU, used for BOD determination), and 2-chloro-6-trichloromethylpyridine (TCMP) and 3,4-dimethylpyrazole phosphate (DMPP) (commonly used as nitrogen fertilizer synergists) were separately added to sequencing batch reactors (SBRs), in order to investigate their effect on nitrification inhibition and pollutant removal for livestock wastewater treatment. The laboratory test shows that the daily addition of 43.8 mg/L ATU or 17.5 mg/L TCMP to SBRs effectively inhibited nitrification. Nitrification inhibition by DMPP seemed fluctuated and insufficient even various dosing strategies were attempted. The removal efficiency of antibiotics was reduced from 95% to 85% with the addition of ATU, while not significantly influenced by TCMP and DMPP. The COD removal efficiency was reduced by only 6%-10% with the addition of three inhibitors. The pilot study shows that nitrification inhibition efficiency reached 89% with the daily addition of 11.5 mg/L TCMP. The total removal efficiency of antibiotics remained over 93%. The laboratory and pilot studies consistently demonstrate that TCMP played a satisfactory nitrification inhibition role and had a negligible effect on antibiotic removal. The current work provides a novel insight for the proper field-return-based management of livestock wastewater, which achieves the dual goals of reducing the risk of antibiotic exposure and preserving its nutrient value as fertilizers. (c) 2021 Elsevier B.V. All rights reserved.