Enhancement of Nitrogen Removal in a Rectangular Airlift Bubble Column Having Aerobic and Anaerobic Regions by Adding an Immobilizing Carrier

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In order to enhance the nitrogen removal in the activated sludge process, a rectangular airlift bubble column where aerobic and anaerobic regions coexisted was used, and immobilizing carrier particles were added in the column. The effects of equipment and operation conditions on the liquid circulation flow rate and liquid-phase volumetric mass transfer coefficient were investigated. On the basis of oxygen balance, the distribution of dissolved oxygen concentration in the column was calculated by using these flow characteristics. From the dissolved oxygen distribution the volume fraction of anaerobic region was estimated. The results indicated that the volume fraction of the anaerobic region and the concentration of the immobilizing particles strongly affected the nitrogen removal. The nitrogen removal had a maximum value when the volume fraction of the anaerobic region was about 50%.

収録刊行物

  • Journal of chemical engineering of Japan

    Journal of chemical engineering of Japan 37(3), 399-405, 2004-03-01

    公益社団法人 化学工学会

参考文献:  11件中 1-11件 を表示

被引用文献:  5件中 1-5件 を表示

各種コード

  • NII論文ID(NAID)
    10013339762
  • 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
    6891634
  • 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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