title: Microbial community structure characteristics associated membrane fouling in A/O-MBR system.
abstract: The study demonstrated the potential relationship between microbial community structure and membrane fouling in an anoxic-oxic membrane bioreactor (A/O-MBR). The results showed that the microbial community structure in biocake was different with aerobic mixture, and the dominant populations were out of sync during the fouling process. Based on microbial community structure and metabolites analysis, the results showed that the succession of microbial community might be the leading factor to the variation of metabolites, and it might be the primary cause of membrane fouling. The rise of Shannon diversity index (H) of the microbial community in A/O-MBR went with the gradually serious membrane fouling. Pareto-Lorenz curve was used to describe the evenness of microbial distribution in A/O-MBR, and the result indicated when community evenness was low, the membrane fouling took place smoothly or slightly, otherwise, high evenness of microbial community would lead to more seriously membrane fouling.
authors.affiliation: State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, China; School of Forestry, Northeast Forestry University, Harbin 150040, China. Electronic address: gaodw@hit.edu.cn.
authors.forename: Da-Wen
authors.initials: DW
authors.lastname: Gao
authors.affiliation: State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, China.
authors.forename: Zhi-Dan
authors.initials: ZD
authors.lastname: Wen
authors.affiliation: State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, China.
authors.forename: Bao
authors.initials: B
authors.lastname: Li
authors.affiliation: School of Forestry, Northeast Forestry University, Harbin 150040, China.
authors.forename: Hong
authors.initials: H
authors.lastname: Liang
mesh_terms: D000332:Aerobiosis; D000693:Anaerobiosis; D001419:Bacteria / Q000378:metabolism; D044822:Biodiversity; D057219:Biofouling; D019149:Bioreactors / Q000382:microbiology*; D008567:Membranes, Artificial; D059013:Microbial Consortia; D010802:Phylogeny; D012150:Polymorphism, Restriction Fragment Length; D011312:Pressure
chemical_list: D008567:Membranes, Artificial
keywords: Membrane bioreactor (MBR); Membrane fouling; Microbial community structure; Wastewater treatment