期刊:
International Journal of Environmental Research and Public Health,2022年19(11) ISSN:1661-7827
通讯作者:
Jie Zhang
作者机构:
[Zhang, Xiaoling; Wang, Liangqin; Li, Jie; Song, Xin; Zeng, Taotao; Yang, Jinhui; Chen, Shengbing] Univ South China, Hunan Prov Key Lab Pollut Control & Resources Reu, Hengyang 421001, Peoples R China.;[Zhang, Jie] Harbin Inst Technol, State Key Lab Urban Water Resources & Environm, Harbin 150090, Peoples R China.
通讯机构:
[Jie Zhang] S;State Key Laboratory of Urban Water Resources and Environment, Harbin Institute of Technology, Harbin 150090, China
关键词:
heavy metals;wastewater treatment;industrial zones;microbial community;human health;water pollution
摘要:
Abstract: Water pollution caused by heavy metals (HMs) poses a serious risk to human health and the environment and can increase the risk of diabetes, cancer, and hypertension in particular. In this study, two full-scale wastewater treatment plants (WWTPs) in industrial zones in southern China were selected to analyze the microbial community structure, diversity, similarity, and differentiation in the anoxic/oxic (AO) and anoxic/oxic membrane bioreactor (AO-MBR) units under the stress of HMs. High-throughput sequencing showed that microbial diversity and abundance were higher in the AO process than in the AO-MBR process. In the two WWTPs, the common dominant phyla were Proteobacteria and Bacteroidetes, while the common dominant genera were Gemmatimonadaceae, Anaerolineaceae, Saprospiraceae, and Terrimonas. Manganese (Mn) and zinc (Zn) positively correlated with Saccharimonadales, Nakamurella, Micrococcales, and Microtrichales, whereas copper (Cu) and iron (Fe) positively correlated with Longilinea and Ferruginibacter. Additionally, the relative abundances of Chloroflexi, Patescibacteria, and Firmicutes differed significantly (p < 0.05) between the two processes. These results may provide comprehensive outlooks on the characterization of microbial communities in WWTPs, which could also help to reduce the potential environmental risks of the effluent from WWTPs located in industrial zones. Keywords: heavy metals; wastewater treatment; industrial zones; microbial community; human health; water pollution