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Characteristics of biofilms and iron corrosion scales with ground and surface waters in drinking water distribution systems

机译：饮用水分配系统中地下水和地表水的生物膜和铁腐蚀垢的特征

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摘要

The composition of biofilm bacterial communities and iron corrosion scales were studied in two drinking water distribution systems transporting groundwater (DWDS-GW) and surface water (DWDS-SW). Loose corrosion products were formed containing α-FeOOH in DWDS-GW, while dense crystallized particles were formed in DWDS-SW, including α-FeOOH, Fe_3O_4 and CaCO_3. The biofilms in the two systems had the same bacterial diversity, denitrifying functional genes and 16S rRNA gene copies, but the bacterial communities were very different. It was found that nitrate-reducing bacteria in biofilms that are associated with iron cycling played a large role in the formation of Fe_3O_4 and corrosion layers.
机译：在两个输送地下水（DWDS-GW）和地表水（DWDS-SW）的饮用水分配系统中，研究了生物膜细菌群落的组成和铁腐蚀垢。在DWDS-GW中形成了含有α-FeO​​OH的松散腐蚀产物，而在DWDS-SW中形成了致密的结晶颗粒，包括α-FeO​​OH，Fe_3O_4和CaCO_3。这两个系统中的生物膜具有相同的细菌多样性，反硝化功能基因和16S rRNA基因拷贝，但细菌群落却大不相同。研究发现，与铁循环相关的生物膜中的硝酸盐还原细菌在Fe_3O_4和腐蚀层的形成中起着重要作用。

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  • 来源
    《Corrosion science》 |2015年第1期|331-339|共9页
  • 作者

    Xiaoxiao Li; Haibo Wang; Chun Hu; Min Yang; Hongying Hu; Junfeng Niu;

  • 作者单位

    Key Laboratory of Drinking Water Science and Technology, Research Centre for Eco-Environmental Sciences, Chinese Academy of Sciences. Beijing 100085, China;

    Key Laboratory of Drinking Water Science and Technology, Research Centre for Eco-Environmental Sciences, Chinese Academy of Sciences. Beijing 100085, China;

    Key Laboratory of Drinking Water Science and Technology, Research Centre for Eco-Environmental Sciences, Chinese Academy of Sciences. Beijing 100085, China;

    Key Laboratory of Drinking Water Science and Technology, Research Centre for Eco-Environmental Sciences, Chinese Academy of Sciences. Beijing 100085, China;

    School of Environment, Tsinghua University, Beijing 100084, China;

    School of Environment, Beijing Normal University, Beijing 100875, China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    A. Iron; B. XRD; B. SEM; C. Microbiological corrosion;

    机译：A.铁;X射线衍射;扫描电镜C.微生物腐蚀;

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