Interaction and removal of oxytetracycline with aerobic granular sludge

被引：72

作者：

He, Qiulai ^{[1
]}

Xie, Zhiyi ^{[1
]}

Fu, Zhidong ^{[1
]}

Wang, Meng ^{[2
,3
]}

Xu, Peng ^{[1
]}

Yu, Jian ^{[1
]}

Ma, Jingwei ^{[1
]}

Gao, Shuxian ^{[4
]}

Chen, Li ^{[5
]}

Zhang, Wei ^{[6
]}

Song, Jianyang ^{[7
]}

Wang, Hongyu ^{[3
]}

机构：

[1] Hunan Univ, Dept Water Engn & Sci, Coll Civil Engn, Key Lab Bldg Safety & Energy Efficiency,Minist Ed, Changsha 410082, Peoples R China

[2] Cent & Southern China Municipal Engn Design & Res, Chongqing Branch, Chongqing 400047, Peoples R China

[3] Wuhan Univ, Sch Civil Engn, Wuhan 430072, Peoples R China

[4] Univ Sci & Technol China, Dept Appl Chem, CAS Key Lab Urban Pollutant Convers, Hefei 230026, Peoples R China

[5] Tongji Univ, Coll Environm Sci & Engn, State Key Lab Pollut Control & Resources Reuse, Shanghai 200092, Peoples R China

[6] Changsha Univ Sci & Technol, Sch Hydraul Engn, Changsha 410114, Peoples R China

[7] Nanyang Inst Technol, Sch Civil Engn, Nanyang 473004, Peoples R China

来源：

BIORESOURCE TECHNOLOGY | 2021年 / 320卷

基金：

中国国家自然科学基金;

关键词：

Aerobic granular sludge; Oxytetracycline; Extracellular polymeric substances; Bacterial community; Granulation grade; ANTIBIOTIC-RESISTANCE GENES; WASTE-WATER TREATMENT; LONG-TERM IMPACT; MICROBIAL COMMUNITY; PHOSPHORUS REMOVAL; ENDOGENOUS DENITRIFICATION; TETRACYCLINE; PERFORMANCE; DEGRADATION; SELECTION;

D O I：

10.1016/j.biortech.2020.124358

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

Aerobic granular sludge as a promising technology showed great resistance to adverse conditions. However, the interaction between oxytetracycline (OTC) and granular sludge was not studied sufficiently. This study therefore investigated OTC-tolerance ability of incomplete and complete granulation sludge from aspects of simultaneous nutrients removal, sludge characteristics, microbial activity, community changes, and vice versa OTC removal performance. Incomplete granulation sludge showed better denitrification performance and resistance. Whereas, denitrification and phosphorus removal of complete granulation sludge suffered a permanent collapse under 5 mg/L OTC. OTC could be removed by rapid adsorption and slow biodegradation via granular sludge. The EPS, especially TB-PS, played a significant role during the operational period subjected to OTC. The major genera of Lysobacter and Candidatus_Competibacter laid the biological basis for stability and functionality of granules, which acted as the putative contributors for resisting and removing OTC. This study showed that incomplete-granulated sludge qualified more promising application prospect.

引用

页数：11

共 48 条

[1] Importance of Species Sorting and Immigration on the Bacterial Assembly of Different-Sized Aggregates in a Full-Scale Aerobic Granular Sludge Plant [J].