下水汚泥の高温好気処理法における熱収支に関する研究 Determination of Energy Balance in the Thermophilic Oxic Process for the Treatment of Sewage Sludge

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著者

    • 楊 瑜芳 YANG Yufang
    • 京都大学大学院工学研究科環境地球工学専攻 Div. of Global Environment Engineering, Graduate School of Engineering, Kyoto University
    • 山口 恭右 YAMAGUCHI Kyosuke
    • 京都大学大学院工学研究科環境地球工学専攻 Div. of Global Environment Engineering, Graduate School of Engineering, Kyoto University
    • 津村 和志 [他] TSUMURA Kazushi
    • 京都大学大学院工学研究科環境地球工学専攻 Div. of Global Environment Engineering, Graduate School of Engineering, Kyoto University
    • 内藤 正明 NAITO Masaaki
    • 京都大学大学院工学研究科環境地球工学専攻 Div. of Global Environment Engineering, Graduate School of Engineering, Kyoto University

抄録

The purpose of this study is to assess the biodegradation rate from the energy balance in the thermophilic oxic process, which is applied to treat the excess sludge, thickened sludge and dewatered sludge cake produced in the wastewater treatment plant. The readily degradable organic matter contained in the sludge was degraded firstly at the thermophilic oxic process according to the temperature curve, on which the temperature rises quickly at the test of sewage sludge added with waste food oil. From the energy budget, about 55-63% of heat produced from bioreaction was used to evaporate water ; around 23-30% of heat produced was used to prevent heat loss. The relationship between organic load and water content was certified, and the addition of energy source is important for the treatment of sewage sludge by the thermophilic oxic process. From the rates of the heat produced from bioreaction to the total calories of organic matter added in these tests, which were varied from 1.02, 1.07 and 0.60, respectively, it is clear that the excess sludge and thickened sludge were degraded more efficiently than dewatered sludge cake. The determination of energy balance could be used to assess the biodegradation rate of organic matter in the thermophilic oxic process.

収録刊行物

  • 水環境学会誌 = Journal of Japan Society on Water Environment  

    水環境学会誌 = Journal of Japan Society on Water Environment 22(5), 383-388, 1999-05 

    公益社団法人 日本水環境学会

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各種コード

  • NII論文ID(NAID)
    10004452355
  • NII書誌ID(NCID)
    AN10372439
  • 本文言語コード
    JPN
  • 資料種別
    ART
  • ISSN
    09168958
  • NDL 記事登録ID
    4728810
  • NDL 雑誌分類
    ZN5(科学技術--建設工学・建設業--都市工学・衛生工学)
  • NDL 請求記号
    Z16-1045
  • データ提供元
    CJP書誌  NDL  J-STAGE 
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