Title:
セシウム汚染土壌の洗浄処理方法
Document Type and Number:
Japanese Patent JP5818096
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a washing processing method for cesium contaminated soil which has a cleaning effect and is capable of reducing volume of a residue containing cesium generated by scrubbing processing and lowering a disposal cost.SOLUTION: A washing processing method for cesium contaminated soil which separates and eliminates cesium from a contaminated soil G0 includes: a classification processing step 1 of adding water to the clay-containing contaminated soil G0 contaminated by cesium, performing wet sieving classification processing to separate a coarse particle component G2 from slurry-like sediment G1 and further performing classfication processing of the latter into a sand component S1 and a fine particle component S2; a surface processing step 2 of performing surface processing by adding a dispersant 7 to the surfaces of the sand component S1 on which the classification processing has been performed in the classification step 1 and to which the cesium-containing clay is attached; and a scrubbing step 3 of performing scrubbing processing by which the cesium-containing clay on a sand component S3 after the surface processing is detached by stirring.
Inventors:
Mitsuru Tsuchida
Mitsuo Mouri
Naoki Baba
Nakajima Takuma
Naoya Sugawara
Takayanagi Hiroshi
Koichi Hosaka
Mitsuo Mouri
Naoki Baba
Nakajima Takuma
Naoya Sugawara
Takayanagi Hiroshi
Koichi Hosaka
Application Number:
JP2012041817A
Publication Date:
November 18, 2015
Filing Date:
February 28, 2012
Export Citation:
Assignee:
Shimizu Construction Co., Ltd.
International Classes:
G21F9/28; B09C1/02; B09C1/08
Domestic Patent References:
| JP6343948A | ||||
| JP7185513A | ||||
| JP11197643A | ||||
| JP2013092428A |
Foreign References:
| US5128068 | ||||
| US5436384 |
Attorney, Agent or Firm:
Masatake Shiga
Tadashi Takahashi
Yoshifumi Saeki
Kenichi Kawabuchi
Tadashi Takahashi
Yoshifumi Saeki
Kenichi Kawabuchi