Occurrence of Antibiotic Resistance Genes and Bacterial Community Structure of Different Sludge Samples During Microwave Pretreatment-Anaerobic Digestion

被引：3
|
作者：
Li H.-L. [1 ]
Wu C.-Y. [1 ,2 ]
Tang A.-P. [2 ]
Tong J. [2 ,3 ,4 ]
Wei Y.-S. [2 ,3 ,4 ]
机构：
[1] School of Civil Engineering, Lanzhou University of Technology, Lanzhou
[2] State Key Joint Laboratory of Environment Simulation and Pollution Control, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing
[3] Department of Water Pollution Control, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing
[4] University of Chinese Academy of Sciences, Beijing
来源：
Tong, Juan (hittj@163.com) | 1600年 / Science Press卷 / 42期
关键词：
Antibiotic resistance genes(ARG); Bacterial community structure; Microwave pretreatment; Sludge anaerobic digestion; Sludge characteristics;
D O I：
10.13227/j.hjkx.202006079
中图分类号：
学科分类号：
摘要：
The waste sludge of municipal wastewater treatment plants is an important reservoir for antibiotic resistance genes (ARG). It is necessary to explore the fate of ARG, microbial community succession, and the correlations between them. Therefore, the distribution of ARG and the microbial community structure of waste sludge from wastewater treatment plants with A2O and A2O-MBR processes during microwave pretreatment and anaerobic digestion were studied in this research. The results showed that the occurrence of ARG and the microbial community structure were quite different in the waste sludge of A2O and A2O-MBR processes. The microwave pretreatment did not change the microbial community much, whereas the community structure of the digested sludge with pretreatment showed significant differences. Anaerobic digestion had a conformity effect on the distribution of ARG and MGE in the digested sludge with or without pretreatment. Among genes, ermF, qnrS, and blaNDM-1 were the most difficult to be reduced ARG and were prone to propagation during anaerobic digestion. The influence of biomass, ammonia nitrogen, and phosphorus on the distribution of ARG and MGE was higher than that of other environmental factors. The sludge characteristics also showed important impacts on the microbial community, especially on some genera with specific functions. These results could help people to better understand the spread and control of ARG during sludge anaerobic digestion. © 2021, Science Press. All right reserved.
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页码：323 / 332
页数：9
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