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首页> 外文期刊>Environmental Science & Technology >Groundwater Chemistry Determines the Prokaryotic Community Structure of Waterworks Sand Filters
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Groundwater Chemistry Determines the Prokaryotic Community Structure of Waterworks Sand Filters

机译：地下水化学决定水厂砂滤池的原核生物群落结构

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摘要

Rapid sand filtration is essential at most waterworks that treat anaerobic groundwater. Often the filtration depends on microbiological processes, but the microbial communities of the filters are largely unknown. We determined the prokaryotic community structures of 11 waterworks receiving groundwater from different geological settings by 16S rRNA gene-based 454 pyrosequencing and explored their relationships to filtration technology and raw water chemistry. Most of the variation in microbial diversity observed between different waterworks sand filters could be explained by the geochemistry of the inlet water. In addition, our findings suggested four features of particular interest: (1) Nitrospira dominated over Nitrobacter at all waterworks, suggesting that Nitrospira is a key nitrifying bacterium in groundwater-treating sand filters. (2) Hyphomicrobiaceae species were abundant at all waterworks, where they may be involved in manganese oxidation. (3) Six of 11 waterworks had significant concentrations of methane in their raw water and very high abundance of the methanotrophic Methylococcaceae. (4) The iron-oxidizing bacteria Gallionella was present at all waterworks suggesting that biological iron oxidation is occurring in addition to abiotic iron oxidation. Elucidation of key members of the microbial community in groundwater-treating sand filters has practical potential, for example, when methods are needed to improve filter function.
机译：在大多数处理厌氧地下水的自来水厂中，快速砂滤是必不可少的。通常，过滤取决于微生物过程，但很大程度上未知过滤器的微生物群落。我们通过基于16S rRNA基因的454焦磷酸测序，确定了11个自不同地质环境接收地下水的水厂的原核生物群落结构，并探讨了它们与过滤技术和原水化学之间的关系。在不同自来水厂滤砂器之间观察到的微生物多样性的大部分变化可以用进水的地球化学来解释。此外，我们的发现还提出了四个特别令人关注的特征：（1）在所有自来水厂中，硝化螺菌在硝化细菌中占主导地位，这表明硝化螺菌是地下水处理砂滤池中的关键硝化细菌。 （2）在所有自来水厂中，细菌菌丝菌种类丰富，可能与锰的氧化有关。 （3）在11个自来水厂中，有6个原水中甲烷的浓度很高，而甲烷营养丰富的甲基球菌科植物的甲烷含量很高。 （4）所有自来水厂都存在铁氧化细菌鸡毒杆菌，这表明除非生物铁氧化外，还发生了生物铁氧化。例如，在需要改善过滤功能的方法时，阐明地下水处理砂滤池中微生物群落的关键成员具有实际潜力。

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  • 来源
    《Environmental Science & Technology》 |2015年第2期|839-846|共8页
  • 作者

    Christian N. Albers; Lea Ellegaard-Jensen; Christoffer B. Harder; Soren Rosendahl; Berith E. Knudsen; Flemming Ekelund; Jens Aamand;

  • 作者单位

    Department of Geochemistry, Geological Survey of Denmark and Greenland, O. Voldgade 10, DK-1350 Copenhagen, Denmark;

    Department of Geochemistry, Geological Survey of Denmark and Greenland, O. Voldgade 10, DK-1350 Copenhagen, Denmark;

    Department of Biology, Copenhagen University, Universitetsparken 15, DK-2100 Copenhagen, Denmark,Department of Microbiology and Infection Control, Statens Seruminstitut, Artillerivej 5, DK-2300 Copenhagen, Denmark;

    Department of Biology, Copenhagen University, Universitetsparken 15, DK-2100 Copenhagen, Denmark;

    Department of Geochemistry, Geological Survey of Denmark and Greenland, O. Voldgade 10, DK-1350 Copenhagen, Denmark;

    Department of Biology, Copenhagen University, Universitetsparken 15, DK-2100 Copenhagen, Denmark;

    Department of Geochemistry, Geological Survey of Denmark and Greenland, O. Voldgade 10, DK-1350 Copenhagen, Denmark;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
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