Effects of triclosan on performance, microbial community and antibiotic resistance genes during partial denitrification in a sequencing moving bed biofilm reactor

被引：67

作者：

Gao, Jing-Feng ^{[1
]}

Liu, Xiang-Hui ^{[1
]}

Fan, Xiao-Yan ^{[1
]}

Dai, Hui-Hui ^{[1
]}

机构：

[1] Beijing Univ Technol, Natl Engn Lab Adv Municipal Wastewater Treatment, Beijing 100124, Peoples R China

来源：

BIORESOURCE TECHNOLOGY | 2019年 / 281卷

基金：

中国国家自然科学基金;

关键词：

Triclosan; Partial denitrification; Sequencing moving bed biofilm reactor; Bacterial community; Antibiotic resistance genes; ACHIEVING PARTIAL DENITRIFICATION; WASTE-WATER TREATMENT; SLUDGE; REMOVAL; BACTERIA; EPS; NITRIFICATION; DEGRADATION; MECHANISM; INSIGHTS;

D O I：

10.1016/j.biortech.2019.02.112

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

Effects of triclosan (TCS) on performance, microbial community and antibiotic resistance genes (ARGs) during partial denitrification (PD) were investigated in a sequencing moving bed biofilm reactor (SMBBR). TCS inhibited nitrite accumulation; inhibition effect was more obvious as TCS concentration increased from 1 to 5 mg/L, but it could recover. Extracellular polymeric substances contents increased with 1 mg/L TCS addition and decreased a lot at 5 mg/L TCS. Community structure in biofilm was different from that in floccular sludge, but it was similar at 5 mg/L TCS. Illumina sequencing showed that Pseudomonas, Aeromonas, Shewanella and Thauera became dominant genera. Abundance of nirS was stable and higher than that of narG and nosZ. High-throughput qPCR showed that mexF, acrA-02, fabK, etc. were screened at 5 mg/L TCS. IntI1 and tnpA-04 were abundant mobile genetic elements. The study furthers understanding of effects of TCS on PD, bacterial communities and ARGs in SMBBR.

引用

页码：326 / 334

页数：9

共 42 条

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