消毒对饮用水生物膜细菌群落的影响。
Impact of disinfection on drinking water biofilm bacterial community.
机构信息
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.
State Key Joint Laboratory of Environmental Simulation and Pollution Control, College of Environmental Sciences and Engineering, Peking University, Beijing 100871, China.
出版信息
J Environ Sci (China). 2015 Nov 1;37:200-5. doi: 10.1016/j.jes.2015.04.008. Epub 2015 Jun 26.
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.
消毒剂常用于控制饮用水分配系统中微生物的生长。然而，消毒对饮用水微生物群落的影响仍知之甚少。本研究采用中试规模管段反应器，考察了不同消毒剂（氯和氯胺）和剂量对生物膜细菌群落的影响。Illumina MiSeq 测序结果表明，消毒策略会影响饮用水生物膜的细菌多样性和群落结构。变形菌门在氯胺消毒的饮用水生物膜中占优势，而厚壁菌门在氯消毒和未氯消毒的生物膜中占优势。主要的变形菌门受到消毒剂类型和剂量的双重影响。此外，氯胺消毒对细菌群落的影响比氯消毒更为深远。
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