Characteristic of N2O Emission and Nitrogen Removal at A DO Controlled Intermittent Aeration Activated Sludge Process

• KIMOCHI YUZURU

  Faculty of Agriculture, University of Tsukuba

• INAMORI YUHEI

  National Institute for Environmental Studies

• FURUYA NOBORU

  Faculty of Management, Science University of Tokyo

• EBISUNO TOICHI

  Faculty of Science, University of Toho

• MATSUMURA MASATOSHI

  Institute of Applied Biochemistry, University of Tsukuba

書誌事項

タイトル別名

• Characteristics of N2O Emission and Nitrogen Removal at A DO Controlled Intermittent Aeration Activated Sludge Process.
• Characteristic of N2O Emission and Nitr

抄録

N₂O is emitted through the wastewater treatment process, especially through biological nitrification and denitrification. Recently much attention has come to be paid to N₂O emission, because N₂O is one of the greenhouse effect gases, which is causing global warming. In this study, examination on the effectiveness of DO controlled intermittent aeration activated sludge process was made with respect to suppression of N₂O emission and improvement of nitrogen removal. The results obtained were as follows: DO control operation was superior to former timer control operation for the ability of both suppression of N₂O emission and nitrogen removal Judging from ORP in the aeration tank, DO control operation could change the surroundings in it periodically for the effective progress of nitrification and denitrification. At the pilot plant experiments, DO control operation was confirmed to be very effective way to suppress N₂O emission and to enhance nitrogen removal efficiency; The conversion ratio from removed nitrogen to N₂O-N was restrained to 0.05% and nitrogen removal efficiency reached over 80%. It was clarified that coagulant dosed and DO controlled intermittent aeration activated sludge process would be very promising way to prevent global warming and to improve water environment.

収録刊行物

• 日本水処理生物学会誌

  日本水処理生物学会誌 34 (2), 1-14, 1998

  日本水処理生物学会

キーワード

• global warming
• nitrous oxide (N<SUB>2</SUB>O)
• nitrification
• denitrification
• wastewater treatment

詳細情報

• CRID: 1390001204962556416
• NII論文ID: 130003700382
• NII論文ID: 10026790387
• NII書誌ID: AN00351126
• DOI: 10.2521/jswtb.34.2_1
• ISSN: 18810438
• ISSN: 09106758
• NDL書誌ID: 4510533
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I4510533
• 本文言語コード: en
• データソース種別:
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  • NDL
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可