Mass Cultivation of Anaerobic Ammonium-Oxidizing Sludge Using a Novel Nonwoven Biomass Carrier

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Biological conversions of nitrogenous compounds closely resembling the chemistry of the anammox reaction were developed and maintained for approximately two years in fixed-bed, continuous-flow unit processes. Using a novel nonwoven matrix for biomass attachment, the anaerobic, autotrophic biofilm cultures were robust enough to survive occasional operational anomalies and to rebound quickly from temporary setbacks. Using a 2.7-<I>l</I> reactor with a hydraulic retention time of 7.5 hours, influent ammonium (NH<SUB>4</SUB><SUP>+</SUP>) and nitrite (NO<SUB>2</SUB><SUP>–</SUP>) concentrations of approximately 250 mg N/<I>l</I>, each, were successfully treated with a total nitrogen (T-N) removal efficiency of 60%. T-N and NH<SUB>4</SUB><SUP>+</SUP> volumetric removal rates of 40 and 20 mg N/<I>l</I>·h, respectively, were maintained for a one-year period of operation, which are in a suitable range for industrial applications. Using the nonwoven material of the 2.7-<I>l</I> reactor as a seed for a larger 14-<I>l</I> reactor, a fast transition to a stable, relatively high T-N mass removal rate of approximately 300 mg/h (NH<SUB>4</SUB>-N removal, 150 mg/h) was possible. These results suggest that attached-growth processes such as employed here, with a nonwoven matrix, could serve well not only as a means of nitrogen abatement but also for mass cultivation of the slowly growing anaerobic ammonium-oxidizing cultures for use in development of new reactors.

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  • Journal of chemical engineering of Japan

    Journal of chemical engineering of Japan 36(10), 1163-1169, 2003-10-01

    公益社団法人 化学工学会

参考文献:  26件中 1-26件 を表示

被引用文献:  9件中 1-9件 を表示

各種コード

  • NII論文ID(NAID)
    10013414656
  • NII書誌ID(NCID)
    AA00709658
  • 本文言語コード
    ENG
  • 資料種別
    ART
  • ISSN
    00219592
  • NDL 記事登録ID
    6720020
  • NDL 雑誌分類
    ZP1(科学技術--化学・化学工業)
  • NDL 請求記号
    Z53-R395
  • データ提供元
    CJP書誌  CJP引用  NDL  J-STAGE 
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