電解処理による写真廃液の生分解性への改質と生物処理に関する研究 Treatment of Photographic Wastewater with Combined Process of Electrochemical and Biological Methods

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著者

    • 竹内 正美 TAKEUCHI Masami
    • 宇部工業高等専門学校物質工学科 Department of Chemical and Biological Engineering, Ube National College of Technology
    • 村上 貞瞭 MURAKAMI Sadaaki
    • 宇部工業高等専門学校物質工学科 Department of Chemical and Biological Engineering, Ube National College of Technology
    • 北尾 高嶺 KITAO Takane
    • 豊橋技術科学大学建設工学系 Department of Architecture and Civil Engineering, Toyohashi University of Technology

抄録

Photographic wastewater bears high levels of pollutants being composed of various organic and inorganic chemicals which are difficult to be reduced to the levels permitted for discharge with a single biological or chemical method. The authors have proposed a three-stage treatment system of the 1st biological, chemical and 2nd biological process. The purpose of the chemical stage is to reform the refractory chemicals into biodegradable ones. In this study, electrochemical oxidation with a ferrite anode is applied to the chemical stage to improve their biodegradabilities.Electrolysis of the photographic wastewater, which had been biologically treated at the 1st stage, enhanced BOD of the wastewater. Mechanism has been discussed on the upgrade in biodegradabilities of chemicals, used in photographic processing, by electrochemical oxidation. The 1st biological-electrochemical-2nd biological process removed 95% in COD; the contributions to COD removal were 42%, 11% and 42% by 1st biol., electro. and 2nd biol. stages, respectively. 48% of TN was removed and 94% among the remaining N-compounds was NO3-. The principal process for COD removal from photographic wastewater have been established, but the additional N removal process is necessary to discharge the processed wastewater into the N regulated water bodies.

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(4), 313-319, 1999-04 

    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)
    10004452136
  • 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
    4693102
  • 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  CJP引用  NDL  J-STAGE 
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