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首页> 外文期刊>Environmental Science & Technology >Anammox Growth on Pretreated Municipal Wastewater
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Anammox Growth on Pretreated Municipal Wastewater

机译：厌氧菌在预处理的城市废水中的生长

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摘要

Autotrophic nitrogen removal from municipal wastewater enables development of energy autarkic wastewater treatment plants. In this study we report the evaluation of the anammox process in a granular sludge fluidized bed lab-scale reactor continuously fed with the actual effluent of the A-stage of the WWTP of Dokhaven, Rotterdam. The reactor was anoxic, and nitrite was dosed continuously to support anammox activity only. The system was operated for more than ten months at temperatures between 20 and 10 ℃. COD was also consumed during the process, but heterotrophs could not outcompete anammox bacteria. Volumetric N-removal rates obtained were comparable or higher than those of conventional N-removal systems, with values higher than 0.4 g-N L~(-1)d~(-1) when operated at 10 ℃. The biomass specific N-removal rate at 10 ℃ was on average 50 ± 7 mg-N g-VSS~(-1) d~(-1) during the last month of operations, almost two times higher than previously reported activities at this temperature. FISH analysis revealed that the dominant anammox species was Candidatus Brocadia Fulgida throughout (be experimentation. Evidence for growth of anammox bacteria at mainstream conditions was demonstrated for the entire temperature range tested (10-20 ℃), and new granules were shown to be actively formed and efficiently retained in the system.
机译：从市政废水中去除自养氮能够开发能源自给自足的废水处理厂。在这项研究中，我们报告了对颗粒污泥流化床实验室规模反应器中厌氧氨氧化工艺的评估，该反应器连续喂入鹿特丹多哈芬污水处理厂A级的实际废水。反应器是缺氧的，并且连续添加亚硝酸盐以仅支持厌氧氨氧化活性。该系统在20至10℃的温度下运行了十多个月。在此过程中也消耗了化学需氧量，但异养菌不能与厌氧菌竞争。在10℃下操作时，获得的体积氮去除率与常规氮去除系统相当或更高，其值高于0.4 g-N L〜（-1）d〜（-1）。在操作的最后一个月中，10℃下生物量的比氮去除率平均为50±7 mg-N g-VSS〜（-1）d〜（-1），几乎比此前报道的活性高出两倍。温度。 FISH分析表明，整个过程中主要的厌氧菌是念珠菌（实验）。在整个测试温度范围内（10-20℃），在主流条件下厌氧菌的生长都得到了证明，并且新的颗粒正在活跃地形成。并有效地保留在系统中。

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  • 来源
    《Environmental Science & Technology》 |2014年第14期|7874-7880|共7页
  • 作者

    Tommaso Lotti; Robbert Kleerebezem; Charlotte van Erp Taalman Kip; Tim L. G. Hendrickx; Jans Kruit; Maaike Hoekstra; Mark C. M. van Loosdrecht;

  • 作者单位

    Department of Biotechnology, Delft University of Technology, Julianalaan 67, Delft 2628 BC, The Netherlands;

    Department of Biotechnology, Delft University of Technology, Julianalaan 67, Delft 2628 BC, The Netherlands;

    Waterschap Hollandse Delta, Handelsweg 100, Ridderkerk 2988 DC, The Netherlands;

    Paques BV, T. de Boerstraat 24, Balk 8561 EL, The Netherlands;

    Paques BV, T. de Boerstraat 24, Balk 8561 EL, The Netherlands,Orgaworld b.v., P.O. Box 5076, Pettelaarpark 100, 'S-Hertogenbosch 5216 PR, The Netherlands;

    Department of Biotechnology, Delft University of Technology, Julianalaan 67, Delft 2628 BC, The Netherlands;

    Department of Biotechnology, Delft University of Technology, Julianalaan 67, Delft 2628 BC, The Netherlands;

  • 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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