間欠ばっ気活性汚泥法における流入窒素負荷のＮ２Ｏ放出および窒素除去に及ぼす影響

• 木持 謙

  筑波大学大学院農学研究科

• 稲森 悠平

  国立環境研究所地域環境研究グループ

• 松村 正利

  筑波大学応用生物化学系

書誌事項

タイトル別名

• Influence of Nitrogen Loading on N2O Emission and Nitrogen Removal from the DO Controlled Intermittent Aeration Activated Sludge Process.
• カンケツ バッキ カッセイ オデイホウ ニ オケル リュウニュウ チッソ フカ

抄録

Coagulant dosed and DO controlled intermittent aeration activated sludge process, which treated domestic wastewater, was investigated so as to examine its ability of nitrogen removal and suppression of the emission of N₂0, one of the greenhouse effect gases. In respect to the N₂O emission into the air, that during aerobic period amounted to about 4 times as large as that during anoxic period. N₂O emission dissolved into the effluent was about 1/3 of that into the air. DO controlled intermittent aeration activated sludge process could achieve high nitrogen removal and restraint of N₂O emission under control of aeration and stirring by measuring DO and water temperature. N₂O conversion ratio from the nitrogen influent and that from the removed nitrogen could be reduced to about 0.05 and 0.06%, respectively, under the nitrogen loading of less than 0.021kg-T-N·kg-MLSS^-1·day^-1. However, each value increased drastically to 0.66 and 1.13%, respectively, under the nitrogen loading of 0.035kg-T-N·kg-MLSS^-1·day^-1. N₂O emission rate was raised over the range of nitrogen loading, at which the influence of higher-nitrogen loading on both the nitrogen removal efficiency and the nitrification ratio came to arise. Consequently, making the treatment under appropriate influent loading, at which satisfactory nitrogen removal efficiency could be obtained, could also restrain N₂O emission simultaneously.

収録刊行物

• 水環境学会誌

  水環境学会誌 21 (3), 163-169, 1998

  公益社団法人 日本水環境学会

キーワード

• global warming
• nitrous oxide (N₂O)
• nitrification
• denitrification
• wastewater treatment

詳細情報

• CRID: 1390001205082353792
• NII論文ID: 10007468621
• NII論文ID: 10004443791
• NII書誌ID: AN10372439
• DOI: 10.2965/jswe.21.163
• COI: 1:CAS:528:DyaK1cXjtVyjurk%3D
• ISSN: 18813690
• ISSN: 09168958
• NDL書誌ID: 4424083
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I4424083
• Web Site: https://www.jstage.jst.go.jp/article/jswe/21/3/21_3_163/_pdf
• 本文言語コード: ja
• データソース種別:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可