Impact of disinfection on drinking water biofilm bacterial community

• Published in: Journal of environmental sciences (China) Vol. 37; no. 11; pp. 200 - 205
• Main Authors: Mi, Zilong, Dai, Yu, Xie, Shuguang, Chen, Chao, Zhang, Xiaojian
• Format: Journal Article
• Language: English
• Published: Netherlands Elsevier B.V 01.11.2015
• Subjects: Bacteria - classification; Bacteria - drug effects; Bacteria - genetics; Biodiversity; Biofilms - drug effects; Chloramines - pharmacology; Chlorine - pharmacology; Disinfectants - pharmacology; Disinfection; Dose-Response Relationship, Drug; Drinking Water - microbiology; Drinking water distribution systems; Firmicutes; High-throughput sequencing; Microbial community; Proteobacteria; 微生物生长; 微生物群落; 水分配系统; 消毒剂; 生物群落结构; 生物膜; 细菌群落; 饮用水; Proteobacteria; Disinfection; Drinking water distribution systems; High-throughput sequencing; Microbial community; Firmicutes
• ISSN: 1001-0742; 1878-7320
• DOI: 10.1016/j.jes.2015.04.008

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 MiS eq 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.