Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
セシウム汚染土壌の洗浄処理方法
Document Type and Number:
Japanese Patent JP5818095
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 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 adding an acid 7 to the sand component S1 after the classification processing and embrittling the surfaces of soil particles of the sand component S1; and a scrubbing step 3 of performing scrubbing processing, by stirring, on surface layer parts of a sand component S3 after the surface processing, and of scraping off and detaching them.

Inventors:
Mitsuru Tsuchida
Mitsuo Mouri
Naoki Baba
Nakajima Takuma
Naoya Sugawara
Takayanagi Hiroshi
Koichi Hosaka
Application Number:
JP2012041816A
Publication Date:
November 18, 2015
Filing Date:
February 28, 2012
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
Shimizu Construction Co., Ltd.
International Classes:
G21F9/28; B09C1/00; B09C1/02; B09C1/08
Domestic Patent References:
JP6343948A
JP11197643A
JP7185513A
JP2013092428A
JP2013088150A
Foreign References:
US5128068
Attorney, Agent or Firm:
Masatake Shiga
Tadashi Takahashi
Yoshifumi Saeki
Kenichi Kawabuchi



 
Previous Patent: 廃棄物焼却炉

Next Patent: HEAT EXCHANGING APPARATUS