Title:
METHOD OF IMPROVING SOIL OF CHEMICALLY CONTAMINATED AREA AND MIXER USED FOR THE SAME
Document Type and Number:
Japanese Patent JP3665307
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a construction method capable of rapidly and efficiently carrying out the work to clean soil containing organic compounds, such as trichloroethylene, tetrachloroethylene, and further, PCB (Polychlorinated Biphenyl), dioxins.
SOLUTION: In the construction method of improving the soil for cleaning areas contaminated with the organic compounds by Raney nickel and hydrogen, the cleaning work consisting of steps of; driving sealing piles into the land to be subjected to soil improvement to compartmentalize the land; compartmentalizing the land like mesh; sampling the soil from the respective mesh-like subdivision lands; judging contamination; previously recognizing the contaminated regions; then boring the lands while slurrying the ground by forcibly feeding an aqueous Raney nickel solution activated by an aqueous alkaline solution from the front end of a rotating boring rod of the deep stratum mixing apparatus and the hydrogen into the ground from a lateral jet orifice at the front end of the boring rod from the upstream side toward the downstream side of the ground water of the contaminated regions; and cleaning the contaminated regions by contact reduction, is repeated until the previously recognized contaminated regions do not exist any more.
Inventors:
Taku Yoshikawa
Hashimoto Masayuki
Hasegawa Junetsu
Hashimoto Masayuki
Hasegawa Junetsu
Application Number:
JP2002208599A
Publication Date:
June 29, 2005
Filing Date:
July 17, 2002
Export Citation:
Assignee:
Kandenko Co., Ltd.
Soil System Co., Ltd.
Soil System Co., Ltd.
International Classes:
A62D3/37; B01F27/96; B01F33/40; B09C1/02; B09C1/08; C07B35/06; C07B37/06; C07C21/10; C07D319/24; C09K17/02; A62D101/22; A62D101/28; (IPC1-7): B09C1/02; A62D3/00; B01F7/04; B01F7/32; B01F13/02; B09C1/08; C07B35/06; C07B37/06; C07C21/10; C09K17/02
Domestic Patent References:
| JP2003038678A | ||||
| JP2003094034A | ||||
| JP10034124A | ||||
| JP11319792A | ||||
| JP2004018515A |
Attorney, Agent or Firm:
Noriaki Fujisawa
Masanori Fujisawa
Masanori Fujisawa
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