Multiple antibiotic resistance genes distribution in ten large-scale membrane bioreactors for municipal wastewater treatment

Yanmei Sun, Yue xiao Shen, Peng Liang, Jizhong Zhou, Yunfeng Yang, Xia Huang

Research output: Contribution to journalArticle

20 Scopus citations

Abstract

Wastewater treatment plants are thought to be potential reservoirs of antibiotic resistance genes. In this study, GeoChip was used for analyzing multiple antibiotic resistance genes, including four multidrug efflux system gene groups and three β-lactamase genes in ten large-scale membrane bioreactors (MBRs) for municipal wastewater treatment. Results revealed that the diversity of antibiotic genes varied a lot among MBRs, but about 40% common antibiotic resistance genes were existent. The average signal intensity of each antibiotic resistance group was similar among MBRs, nevertheless the total abundance of each group varied remarkably and the dominant resistance gene groups were different in individual MBR. The antibiotic resistance genes majorly derived from Proteobacteria and Actinobacteria. Further study indicated that TN, TP and COD of influent, temperature and conductivity of mixed liquor were significant (P < 0.05) correlated to the multiple antibiotic resistance genes distribution in MBRs.

Original languageEnglish
Pages (from-to)100-106
Number of pages7
JournalBioresource Technology
Volume222
DOIs
StatePublished - Dec 1 2016

Keywords

  • GeoChip
  • Membrane bioreactors
  • Multiple antibiotic resistance genes
  • Municipal wastewater

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