Removal of sulfamethoxazole and trimethoprim from reclaimed water and the biodegradation mechanism

被引:49
作者
Liu, Qinqin [1 ,2 ]
Li, Miao [1 ]
Liu, Xiang [1 ]
Zhang, Quan [1 ]
Liu, Rui [1 ]
Wang, Zhenglu [3 ]
Shi, Xueting [4 ]
Quan, Jin [5 ]
Shen, Xuhui [2 ]
Zhang, Fawang [6 ]
机构
[1] Tsinghua Univ, Sch Environm, Beijing 100084, Peoples R China
[2] China Earthquake Adm, Inst Crustal Dynam, Beijing 100085, Peoples R China
[3] Peking Univ, Coll Urban & Environm Sci, Beijing 100871, Peoples R China
[4] Minist Environm Protect, Appraisal Ctr Environm & Engn, Beijing 100012, Peoples R China
[5] China Inst Water Resources & Hydropower Res IWHR, State Key Lab Simulat & Regulat Water Cycle River, Beijing 100038, Peoples R China
[6] Chinese Acad Geol Sci, Beijing 100037, Peoples R China
基金
北京市自然科学基金;
关键词
Trimethoprim; Sulfamethoxazole; Biodegradation; Aerobic nitrification; NITRIFYING ACTIVATED-SLUDGE; WASTE-WATER; SEWAGE-TREATMENT; BANK FILTRATION; PHARMACEUTICAL COMPOUNDS; ORGANIC CONTAMINANTS; FATE; ANTIBIOTICS; DEGRADATION; SYSTEM;
D O I
10.1007/s11783-018-1048-5
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
Sulfamethoxazole (SMX) and trimethoprim (TMP) are two critical sulfonamide antibiotics with enhanced persistency that are commonly found in wastewater treatment plants. Recently, more scholars have showed interests in how SMX and TMP antibiotics are biodegraded, which is seldom reported previously. Novel artificial composite soil treatment systems were designed to allow biodegradation to effectively remove adsorbed SMX and TMP from the surface of clay ceramsites. A synergy between sorption and biodegradation improves the removal of SMX and TMP. One highly efficient SMX and TMP degrading bacteria strain, Bacillus subtilis, was isolated from column reactors. In the removal process, this bacteria degrade SMX and TMP to NH4+ , and then further convert NH4+ to NO3- in a continuous process. Microbial adaptation time was longer for SMX degradation than for TMP, and SMX was also able to be degraded in aerobic conditions. Importantly, the artificial composite soil treatment system is suitable for application in practical engineering. (C) Higher Education Press and Springer-Verlag GmbH Germany, part of Springer Nature 2018
引用
收藏
页数:8
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