title: Impact of disinfection on drinking water biofilm bacterial community.
abstract: Disinfectants are commonly applied to control the growth of microorganisms in drinking water distribution systems. However, the effect of disinfection on drinking water microbial community remains poorly understood. The present study investigated the impacts of different disinfectants (chlorine and chloramine) and dosages on biofilm bacterial community in bench-scale pipe section reactors. Illumina MiSeq sequencing illustrated that disinfection strategy could affect both bacterial diversity and community structure of drinking water biofilm. Proteobacteria tended to predominate in chloraminated drinking water biofilms, while Firmicutes in chlorinated and unchlorinated biofilms. The major proteobacterial groups were influenced by both disinfectant type and dosage. In addition, chloramination had a more profound impact on bacterial community than chlorination.
authors.affiliation: State Environmental Protection Key Laboratory of Microorganism Application and Risk Control (MARC), Tsinghua University, Beijing 100084, China; School of Environment, Tsinghua University, Beijing 100084, China. Electronic address: mzl10@mails.tsinghua.edu.cn.
authors.forename: Zilong
authors.initials: Z
authors.lastname: Mi
authors.affiliation: State Key Joint Laboratory of Environmental Simulation and Pollution Control, College of Environmental Sciences and Engineering, Peking University, Beijing 100871, China.
authors.forename: Yu
authors.initials: Y
authors.lastname: Dai
authors.affiliation: State Key Joint Laboratory of Environmental Simulation and Pollution Control, College of Environmental Sciences and Engineering, Peking University, Beijing 100871, China. Electronic address: xiesg@pku.edu.cn.
authors.forename: Shuguang
authors.initials: S
authors.lastname: Xie
authors.affiliation: State Environmental Protection Key Laboratory of Microorganism Application and Risk Control (MARC), Tsinghua University, Beijing 100084, China; School of Environment, Tsinghua University, Beijing 100084, China.
authors.forename: Chao
authors.initials: C
authors.lastname: Chen
authors.affiliation: School of Environment, Tsinghua University, Beijing 100084, China. Electronic address: zhangxj@mail.tsinghua.edu.cn.
authors.forename: Xiaojian
authors.initials: X
authors.lastname: Zhang
mesh_terms: D001419:Bacteria / Q000145:classification / Q000187:drug effects* / Q000235:genetics; D044822:Biodiversity; D018441:Biofilms / Q000187:drug effects*; D002700:Chloramines / Q000494:pharmacology; D002713:Chlorine / Q000494:pharmacology; D004202:Disinfectants / Q000494:pharmacology*; D004305:Dose-Response Relationship, Drug; D060766:Drinking Water / Q000382:microbiology*
chemical_list: D002700:Chloramines; D004202:Disinfectants; D060766:Drinking Water; D002713:Chlorine; C030816:chloramine
keywords: Disinfection; Drinking water distribution systems; Firmicutes; High-throughput sequencing; Microbial community; Proteobacteria