Title:
CONTAMINATED SOIL DECONTAMINATION METHOD
Document Type and Number:
Japanese Patent JP3971988
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a contaminated soil decontamination method which can efficiently decontaminate high moisture content soil contaminated with harmful substances, such as dioxins and PCBs.
SOLUTION: (1) The contaminated soil decontamination method is a method for decontaminating the high moisture content soil containing the harmful substances, and comprises a flocculation process for flocculating the high moisture content soil by a flocculant to obtain flocculated soil which incorporates the harmful substances, a water separation process for separating and removing water contained in the flocculated soil, and a harmful substance extraction process for removing the harmful substances from the flocculated soil from which water has been separated, by solvent extraction. (2) The moisture content of the flocculated soil is reduced to 5-100% in the water separation process. (3) The flocculated soil from which water has been separated in the water separation process is processed into flakes having a thickness of 0.1-15 mm.
Inventors:
Toru Ida
Nishie Masaichiro
Nishie Masaichiro
Application Number:
JP2002330934A
Publication Date:
September 05, 2007
Filing Date:
November 14, 2002
Export Citation:
Assignee:
KABUSHIKI KAISHA KOBE SEIKO SHO
International Classes:
C02F11/00; B01D11/02; C07D319/24; B09C1/02; B09C1/08; C02F11/12; C02F11/14; (IPC1-7): C02F11/00; B01D11/02; B09C1/02; B09C1/08; C02F11/12; C02F11/14; //C07D319/24
Domestic Patent References:
| JP2002282833A | ||||
| JP2001334251A | ||||
| JP2001096267A | ||||
| JP55031475A | ||||
| JP2002126717A | ||||
| JP2002086129A | ||||
| JP2001334249A | ||||
| JP2000051836A | ||||
| JP2103281A |
Attorney, Agent or Firm:
Yoshiyuki Kaji
Makoto Suhara
Makoto Suhara
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