Title:
生物学的水処理装置
Document Type and Number:
Japanese Patent JP5802426
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a biological water treating apparatus which can attain both maintenance of quality of water to be treated and suppression of production amount of nitrous oxide (NO).SOLUTION: A first biological water treating apparatus 11 is provided with a biological reaction tank 13 in which activated sludge is stored, an aeration part 15, a blower 17 for air blowing. an oxidation-reduction potentiometer 19, a NO amount correlation value acquiring part 21, an aeration amount correction amount memory part 23 and a first aeration amount controlling part 25. The NO amount correlation value acquiring part 21 acquires a correlation value of nitrous oxide (NO) amount in the biological reaction tank 13. The aeration amount correction amount memory part 23 memorizes a first relation table concerning proper aeration amount correction amount to NO production amount. The first aeration amount controlling part 25 controls aeration amount of aeration parts 15, 17 with aeration amount corrected by using a proper correction amount concerning aeration amount of aeration parts 15, 17 corresponding to the correlation value of nitrous oxide (NO) amount as a controlling target.
Inventors:
Kamimon Takuya
Ichiro Yamanoi
圓佛 伊智朗
Takemoto Tsuyoshi
Hideyuki Tadokoro
Ichiro Yamanoi
圓佛 伊智朗
Takemoto Tsuyoshi
Hideyuki Tadokoro
Application Number:
JP2011097947A
Publication Date:
October 28, 2015
Filing Date:
April 26, 2011
Export Citation:
Assignee:
株式会社日立製作所
International Classes:
C02F3/34; C02F3/12
Domestic Patent References:
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| JP2010094665A | ||||
| JP9038683A | ||||
| JP9038682A | ||||
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Other References:
3-(1)-3 水処理から発生するN2O(一酸化二窒素)の排出抑制技術の開発,東京都下水道局技術調査年報2010,日本,URL,http://www.gesui.metro.tokyo.jp/gijyutou/gn22/nenpou2010/3-1-3.pdf
下水処理硝化工程における一酸化二窒素の生成量評価と抑制方法の検討,学会誌「EICA」,日本,2010年,第15巻 第2・3合併号,URL,eica.jp/search/download.php?file=b_15_2_99.pdf&id=873
実下水を処理する嫌気無酸素好気プロセスにおける亜酸化窒素生成要因の検討,第47回下水道研究発表会講演集,2010年 6月30日,p.167-p.169
下水処理硝化工程における一酸化二窒素の生成量評価と抑制方法の検討,学会誌「EICA」,日本,2010年,第15巻 第2・3合併号,URL,eica.jp/search/download.php?file=b_15_2_99.pdf&id=873
実下水を処理する嫌気無酸素好気プロセスにおける亜酸化窒素生成要因の検討,第47回下水道研究発表会講演集,2010年 6月30日,p.167-p.169
Attorney, Agent or Firm:
Isono Dozo
Etsuo Tada
Etsuo Tada