都市下水の脱窒過程での亜酸化窒素の突発的発生 Abrupt Emission of Nitrous Oxide in Denitrification Step in Nitrogen Removal from Municipal Wastewater

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Abrupt emission of nitrous oxide was observed in denitrification step of circulated nitrogen removal process treating domestic wastewater from combined sewerage system. Continuous monitoring of nitrous oxide emission revealed that such abrupt nitrous oxide emission occurred only when redox potential (ORP) exceeded+300mV. Dilution of influent by rain or snow was suspected reason for this emission, but rain or snow did not always resulted in such event. Laboratory scale experiments demonstrated the emission of nitrous oxide and accumulation of nitrate with intentional shock feeding of diluted influent. Addition of acetate after the feeding of diluted influent helped quick process recovery to the normal denitrification.

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 24(7), 473-476, 2001-07-10

    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)
    10008005294
  • NII書誌ID(NCID)
    AN10372439
  • 本文言語コード
    JPN
  • 資料種別
    NOT
  • ISSN
    09168958
  • NDL 記事登録ID
    5839499
  • 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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