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首页> 外文期刊>Journal of Environmental Science and Health >Anammox bacteria community and nitrogen removal in a strip-like wetland in the riparian zone
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Anammox bacteria community and nitrogen removal in a strip-like wetland in the riparian zone

机译：河岸带状湿地中厌氧氨氧化细菌群落及脱氮

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摘要

A strip-like wetland was constructed in the riparian zone for investigation of ammonium nitrogen (NH3-N) removal in the Peach River. An inner zeolite layer was set in the wetland to adsorb NH3-N and further to remove total nitrogen (TN). An oxygen-deficient condition with dissolved oxygen of 0.87-1.60 mg L~(-1) was observed in the zeolite layer, which benefits anaerobic ammonium oxidation (anammox) bacteria survival. The community structure of anammox bacteria was analyzed in the zeolite layer. The analysis shows that the anammox bacterial sequences are grouped into three known distinct clusters: Candidatus Brocadia fulgida, Candidatus Brocadia anammoxidans and Candidatus Jettenia asiatica. The intensified test driven by artificial pumping shows that average removal rates of NH3-N and TN are 41.6 mg m~(-3)d~(-1) and 63.2 mg m~(-3)d~(-1), respectively. The normal test driven by natural hydrodynamics also verifies that NH3-N removal mainly happens in the zeolite layer. Microbial mechanism of TN removal in the wetland involves both the autotrophic and heterotrophic process. These results suggest that the strip-like RW can be a cost-effective approach for NH3-N removal and can potentially be extended to similar rivers as no extra energy is required to maintain the wetland operation.
机译：在河岸带建造了一条带状的湿地，用于研究桃河中氨氮（NH3-N）的去除。在湿地中设置一个内部沸石层以吸收NH3-N，并进一步去除总氮（TN）。在沸石层中观察到溶氧为0.87-1.60 mg L〜（-1）的缺氧条件，有利于厌氧铵氧化（anammox）细菌的生存。分析了沸石层中厌氧菌的群落结构。分析表明，厌氧菌的细菌序列被分为三个已知的不同簇：假丝酵母念珠菌，厌氧假丝酵母念珠菌和积雪假丝酵母。人工抽水驱动的强化试验表明，NH3-N和TN的平均去除率分别为41.6 mg m〜（-3）d〜（-1）和63.2 mg m〜（-3）d〜（-1）。 。由自然流体动力学驱动的正常测试还验证了NH3-N的去除主要发生在沸石层中。湿地中总氮去除的微生物机制涉及自养过程和异养过程。这些结果表明，条状RW可以是一种经济高效的去除NH3-N的方法，并且由于不需要额外的能量来维持湿地运行，因此可以扩展到类似的河流。

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  • 来源
    《Journal of Environmental Science and Health》 |2011年第7期|p.715-722|共8页
  • 作者

    YUANSHENG PEI; JUN WANG; ZIYUAN WANG; BINGHUI TIAN;

  • 作者单位

    The Key Laboratory of Water and Sediment Sciences, Ministry of Education, School of Environment, Beijing Normal University,Beijing, P.R. China;

    The Key Laboratory of Water and Sediment Sciences, Ministry of Education, School of Environment, Beijing Normal University,Beijing, P.R. China;

    The Key Laboratory of Water and Sediment Sciences, Ministry of Education, School of Environment, Beijing Normal University,Beijing, P.R. China;

    Research Center for Eco-Environmental Sciences, Chinese Academy of Science, Beijing, P.R. 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);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    ammonium nitrogen; anammox; zeolite; riparian wetland.;

    机译：铵氮厌氧菌沸石河岸湿地。;

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