Ａｌｃａｌｉｇｅｎｅｓ　ｆａｅｃａｌｉｓを導入した活性汚泥法の通性嫌気条件におけるＮ２Ｏ放出および排水処理特性

• 呉 暁磊

  茨城県科学技術振興財団

• 稲森 悠平

  国立環境研究所地域環境研究グループ

書誌事項

タイトル別名

• Characteristics of N2O Emission and Wastewater Treatment in An Anoxic Activated Sludge Process Added with Alcaligenes faecalis.
• Alcaligenes faecalisを導入した活性汚泥法の通性嫌気条件におけるN2O放出及び排水処理特性
• Alcaligenes faecalis オ ドウニュウ シタ カッセイ オデイホウ ノ ツウセイ イヤケ ジョウケン ニ オケル N2O ホウシュツ オヨビ ハイスイ ショリ トクセイ

抄録

Alcaligenes faecalis, a typical heterotrophic nitrifying and denitrifying bacterium, was added into activated sludge and was made to be a dominant species in the activated sludge ecosystem under anoxic conditions. Influent COD to total nitrogen ratios (C:N) and quantities of the inoculated A. faecalis were changed to test the responses of the systems. The systems' behaviors of N₂O emission and wastewater treatment were evaluated. On the other hand, a batch experiment was also conducted in which Helium (He) was used to bubble an activated sludge system. Characteristics of N₂O emission from the system were tested. Experimental results showed that N₂O production of the systems containing A. faecalis was generally about 50% less than those of the control reactors containing only activated sludge. In addition, the former systems had a higher total nitrogen removal capability, and their average total nitrogen removal efficiencies were about 7-56% higher than those of the control activated sludge systems. Moreover, TOC removal efficiencies of the systems containing A. faecalis were a little higher than those of the control systems. On the other hand, more alien A. faecalis addition and higher influent C:N ratio led to lower N₂O emission and better effluent water qualities. Therefore, increasing A. faecalis' population in activated sludge should be encouraged for controlling N₂O emission and upgrading wastewater treatment capability under anoxic conditions. Batch experiments showed that bubbling led to higher N₂O production. A critical He flowrate existed corresponding to the highest N₂O production yield.

収録刊行物

• 水環境学会誌

  水環境学会誌 22 (6), 511-517, 1999

  公益社団法人 日本水環境学会

キーワード

• <i>Alcaligenes faecalis</i>
• denitrification
• global warming
• nitrous oxide emission
• wastewater treatment

詳細情報

• CRID: 1390282680056993024
• NII論文ID: 10004452652
• NII書誌ID: AN10372439
• DOI: 10.2965/jswe.22.511
• COI: 1:CAS:528:DyaK1MXltFSju7Y%3D
• ISSN: 18813690
• ISSN: 09168958
• NDL書誌ID: 4768698
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I4768698
• Web Site: https://www.jstage.jst.go.jp/article/jswe/22/6/22_6_511/_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