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通过454高通量测序对北方A和B两实际饮用水管网系统中生物膜细菌群落特征进行表征,并研究了其对管网腐蚀产物组成的影响。结果表明,A管网生物膜细菌群落丰度和多样性高于B管网生物膜。在门水平上,两管网生物膜细菌群落主要为变形菌门Proteobacteria,但B管网生物膜中的相对丰度(67.10%)高于A(46.50%)。在纲水平上,A管网生物膜主要为β-变形菌纲Betaproteobacteria,B管网生物膜中主要为β-变形菌纲Betaproteobacteria和δ-变形菌纲Deltaproteobacteria。在属水平上,A管网生物膜中腐蚀相关菌群主要为硝酸盐还原菌和铁还原菌,其腐蚀产物主要为α-Fe OOH和Fe_3O_4,而B管网生物膜中硫酸盐还原菌特别是脱硫弧菌属Desulfovibrio含量较高,其可能与管垢中绿锈含量高有关。
The bacterial community characteristics of biofilm in A and B drinking water network system of North China were characterized by 454 high-throughput sequencing, and the influence of biofilm on the composition of corrosion products of pipe network was studied. The results showed that the abundance and diversity of bacterial community in biofilm A were higher than those in biofilm B. At the gate level, the biofilm community in the two pipelines was dominated by Proteobacteria, but the relative abundance (67.10%) in biofilm B was higher than that of A (46.50%). In the level of the level, A pipe network biofilm mainly Beta-proteobacteria Betaproteobacteria, B pipe network biofilms mainly Beta-proteobacteria Betaproteobacteria and Delta-proteobacteria Deltaproteobacteria. At the genus level, the corrosion-related bacteria in the biofilm of A pipe network are mainly nitrate-reducing bacteria and iron-reducing bacteria, the corrosion products are mainly α-Fe OOH and Fe 3 O 4, while the sulfate-reducing bacteria Desulfovibrio Desulfovibrio content is higher, which may be related to the high content of rust in the tube scale.