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首页> 外文期刊>Environmental Science & Technology >Phylogenetic Diversity and Metabolic Potential of Activated Sludge Microbial Communities in Full-Scale Wastewater Treatment Plants
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Phylogenetic Diversity and Metabolic Potential of Activated Sludge Microbial Communities in Full-Scale Wastewater Treatment Plants

机译：大型污水处理厂中活性污泥微生物群落的系统发育多样性和代谢潜能

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摘要

The activated sludge process is an essential process for treating domestic and industrial wastewaters in most wastewater treatment plants (WWTPs). This process consists of a mixture of general and special microorganisms in a form of a complex enrichment population. Thus, the exploration of activated sludge microbial communities is crucial to improve the performance of activated sludge process. In this study, we investigated the phylogenetic diversity and metabolic potential of activated sludge microbial communities in full-scale WWTPs. Four 16S rRNA gene clone libraries were constructed from activated sludge samples. In all samples, Proteobacteria was the most abundant phylogenetic group, followed by Bacteroidetes and Firmicutes. The dominance of Proteobacteria was further demonstrated by denaturing gradient gel electro-phoresis (DGGE) and terminal restriction fragment length polymorphism (T-RFLP). Some specific genera, e,g., Nitrosomonas, Thauera, and Dechloromonas, which significantly correlate with the functions and performance of wastewater treatment, were abundant in all samples. A large number of unclassified sequences were found in the library, suggesting that a wide variety of novel species may inhabit complex activated sludge communities. The structures of the bacterial community did not differ significantly among samples. All samples utilized the vast majority of 31 carbon sources of an EcoPlate (Biolog), suggesting that activated sludge microbial communities possess high metabolic potential and equivalent functions required for wastewater treatment
机译：在大多数废水处理厂（WWTP）中，活性污泥工艺是处理家庭和工业废水的必不可少的工艺。该过程由复杂富集群体形式的普通微生物和特殊微生物的混合物组成。因此，探索活性污泥微生物群落对于提高活性污泥工艺的性能至关重要。在这项研究中，我们调查了大规模污水处理厂中活性污泥微生物群落的系统发育多样性和代谢潜力。从活性污泥样品中构建了四个16S rRNA基因克隆文库。在所有样品中，变形杆菌是最丰富的系统发育组，其次是拟杆菌和硬毛菌。变性梯度凝胶电泳（DGGE）和末端限制性片段长度多态性（T-RFLP）进一步证明了变形杆菌的优势。在所有样品中都有一些特定的属，例如亚硝化单胞菌，Thauera和Dechloromonas，它们与废水处理的功能和性能显着相关。在文库中发现了大量未分类序列，这表明各种各样的新物种可能居住在复杂的活性污泥群落中。样品中细菌群落的结构没有显着差异。所有样品都利用了EcoPlate（Biolog）的31种碳源中的绝大部分，这表明活性污泥微生物群落具有很高的代谢潜能和废水处理所需的等效功能。

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  • 来源
    《Environmental Science & Technology》 |2011年第17期|p.7408-7415|共8页
  • 作者

    Chao Yang; Wei Zhang; Ruihua Liu; Qiang Li; Baobin Li; Shufang Wang; Cunjiang Song; Chuanling Qiao; Ashok Mulchandani;

  • 作者单位

    Key Laboratory of Molecular Microbiology and Technology for Ministry of Education, Nankai University, Tianjin 300071, China;

    Key Laboratory of Molecular Microbiology and Technology for Ministry of Education, Nankai University, Tianjin 300071, China;

    College of Pharmacy and Tianjin Key Laboratory of Molecular Drug Research, Nankai University, Tianjin 300071, China;

    Key Laboratory of Molecular Microbiology and Technology for Ministry of Education, Nankai University, Tianjin 300071, China;

    Key Laboratory of Molecular Microbiology and Technology for Ministry of Education, Nankai University, Tianjin 300071, China;

    Key Laboratory of Bioactive Materials for Ministry of Education, Nankai University, Tianjin 300071, China;

    Key Laboratory of Molecular Microbiology and Technology for Ministry of Education, Nankai University, Tianjin 300071, China;

    State Key Laboratory of Integrated Management of Pest Insects and Rodents, Institute of Zoology, Chinese Academy of Sciences,Beijing 100101, China;

    Department of Chemical and Environmental Engineering, University of California, Riverside, California 92521, United States;

  • 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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