Title:
放射性硝酸塩廃液処理装置
Document Type and Number:
Japanese Patent JP4774065
Kind Code:
B2
Abstract:
An apparatus for treating a radioactive nitrate waste liquid includes: a denitrification tank (12) that accommodates active sludge which adsorbs or takes in a radioactive substance in a nitrate waste liquid (11) containing nitrate and the radioactive substance and in which an anaerobic microorganism that reduces the nitrate to nitrogen gas grows; a reaeration tank (14) that aerates and mixes a denitrification-treated liquid (24) treated in the denitrification tank (12) with the active sludge in which the aerobic microorganism grows; and a sludge dissolution tank (81) that dissolves redundant sludge (26A, 26B) discharged from the denitrification tank (12) and the reaeration tank (14). Acetic peracid (80) is supplied to the sludge dissolution tank (81) to dissolve redundant sludge, a sludge lysate is supplied to the denitrification tank (12) as a carbon source (22), and acetic acid is supplied to the denitrification tank (12).
Inventors:
Naoki Ogawa
Katsushi Shibata
Kazuhiko Kuroda
Chang'an Hiromitsu
Katsushi Shibata
Kazuhiko Kuroda
Chang'an Hiromitsu
Application Number:
JP2008029554A
Publication Date:
September 14, 2011
Filing Date:
February 08, 2008
Export Citation:
Assignee:
MITSUBISHI HEAVY INDUSTRIES,LTD.
International Classes:
G21F9/18; B01D61/58; B01D65/02; C02F1/44; C02F3/12; C02F3/34; C02F11/00
Domestic Patent References:
| JP2007105627A | ||||
| JP2007271306A | ||||
| JP2006015236A | ||||
| JP2003225698A | ||||
| JP7013497A |
Other References:
小川尚樹 他4名,「硝酸廃液生物処理システムの開発:高濃度廃液への生物処理の適用」,日本原子力学会2006年秋の大会予稿集,日本,社団法人日本原子力学会,2006年 8月17日,A24
佐川寛 他5名,「活性汚泥法を用いた放射性洗浄廃液処理装置の開発」,火力原子力発電,日本,社団法人火力原子力発電技術協会,2003年 4月15日,第54巻第4号,第14-21頁
佐川寛 他5名,「活性汚泥法を用いた放射性洗浄廃液処理装置の開発」,火力原子力発電,日本,社団法人火力原子力発電技術協会,2003年 4月15日,第54巻第4号,第14-21頁
Attorney, Agent or Firm:
Hiroaki Sakai