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首页> 外文期刊>Environmental Science & Technology >Co-Variation between Distribution of Microbial Communities and Biological Metabolization of Organics in Urban Sewer Systems
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Co-Variation between Distribution of Microbial Communities and Biological Metabolization of Organics in Urban Sewer Systems

机译：城市下水道系统中微生物群落分布与有机物生物代谢之间的协变

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摘要

Distribution characteristics and biodiversity of microbial communities were studied in a 1200 m pilot sewer system. Results showed that the dominant microorganisms, fermentation bacteria (FB), hydrogen-producing acetogen (HPA), sulfate-reducing bacteria (SRB) and methanogenic archaea (MA) changed significantly along the sewer systems, from start to the end. The distribution of the functional microorganisms could induce substrate transformation and lead to the accumulation of micromolecular organics (i.e., acetic acid, propionic acid and amino acid). However, substrate transformation induced by these microbes was affected by environmental factors such as oxidation–reduction potential, pH and dissolved oxygen. Changes in environmental conditions along the sewer resulted in the variation of dominant bioreactions. FB were enriched at the beginning of the sewer, while SRB and MA were found toward the end. Furthermore, based on Spearman rank correlation analysis of microbial communities, environmental factors and substrates, covariation between microbial community distribution and organics metabolization along the sewer was identified. This study could provide a theoretical foundation for understanding wastewater quality variation during transportation from sewers to treatment plants, therefore, promoting optimization of design and operation of wastewater treatment.
机译：在一个1200 m的试验污水系统中研究了微生物群落的分布特征和生物多样性。结果表明，主要的微生物，发酵细菌（FB），产氢的乙酸原（HPA），硫酸盐还原细菌（SRB）和产甲烷古菌（MA）从下至下都沿下水道系统发生了显着变化。功能性微生物的分布可诱导底物转化并导致微分子有机物（即乙酸，丙酸和氨基酸）的积累。但是，这些微生物诱导的底物转化受到环境因素的影响，例如氧化还原电位，pH和溶解氧。下水道周围环境条件的变化导致主要生物反应的变化。 FB在下水道开始时富集，而SRB和MA在结束时发现。此外，基于对微生物群落，环境因素和基质的Spearman秩相关分析，确定了微生物群落分布与下水道中有机物代谢之间的协变量。该研究可为理解下水道到污水处理厂运输过程中污水质量变化提供理论依据，从而促进污水处理设计和运行的优化。

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  • 来源
    《Environmental Science & Technology》 |2018年第3期|1270-1279|共10页
  • 作者

    Pengkang Jin; Xuan Shi; Guangxi Sun; Lei Yang; Yixiao Cai; Xiaochang C. Wang;

  • 作者单位

    School of Environmental and Municipal Engineering, Xi’an University of Architecture and Technology, Xi’an, Shaanxi Province 710055, China;

    School of Environmental and Municipal Engineering, Xi’an University of Architecture and Technology, Xi’an, Shaanxi Province 710055, China;

    Sino-Danish Center for Education and Research (SDC), University of Chinese Academy of Sciences, Beijing, 100190, China;

    School of Environmental and Municipal Engineering, Xi’an University of Architecture and Technology, Xi’an, Shaanxi Province 710055, China;

    NUS Environmental Research Institute, National University of Singapore, 1 Create Way, Singapore 138602, Singapore;

    School of Environmental and Municipal Engineering, Xi’an University of Architecture and Technology, Xi’an, Shaanxi Province 710055, China;

  • 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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  • 正文语种 eng
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