腐植酸
适应
基因组
废水
基因
化学
活性污泥
胞外聚合物
微生物种群生物学
污水处理
污染物
抗生素
环境化学
生物化学
生物
微生物学
细菌
生态学
环境工程
遗传学
有机化学
工程类
肥料
生物膜
作者
Jianguo Zhao,Yu Li,Yahe Li,Ke Zhang,Hongzhong Zhang,Yanfei Li
标识
DOI:10.1016/j.biortech.2020.124575
摘要
The humic acid (HA) function on the sludge performance, antibiotics resistance genes (ARGs) propagation and functional genes expression during Cu(II)-containing wastewater treatment was comprehensively investigated via metagenomics analysis. Results showed that the pollutants removal was significantly inhibited after long-term exposure of 5 mg/L Cu(II), while the inhibitory effects were moderately alleviated after addition of 10 mg/L HA. The extracellular polymeric substances (EPS) production with Cu(II) acclimation was higher than the sludge with Cu(II) and HA acclimation. The microbial community was significantly affected by the HA addition, while the relative abundance of dominant ARGs had no distinct differences with or without HA addition under Cu(II) stress. The functional genes were largely implemented for microbial metabolism, while no significant differences were found with HA addition under Cu(II) stress. Thus, the HA function for ARGs propagation and functional genes expression needed to be further research under Cu(II) stress in wastewater treatment.
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