Title:
DECONTAMINATION STRUCTURE ON VISCOUS GROUND AND DECONTAMINATION METHOD
Document Type and Number:
Japanese Patent JP3841339
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a decontamination structure on viscous ground and a decontamination method which enables application of the soil vapor extraction even in viscous ground having low gas permeability, has high decontamination efficiency and enables drastic shortening of a treatment period.
SOLUTION: In the viscous ground 9 which has a gas-permeable layer 2 on the lower side of viscous soil layer 1, a groundwater level is positioned on a gas-permeable layer 2 or on a lower part than the gas-permeable layer 2 and a contaminated layer 4 exists on the upper side than the groundwater level. Therein, a number of gas passing pillars 5 are constructed with a proper pitch and, thereby, the gas permeability of the viscous soil layer is improved. Subsequently, a gas suction device having a suction point 7 located on the gas-permeable layer part 61 of a suction hole 6 is operated and the gaseous contamination substance is recovered to the ground.
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Inventors:
Kazuaki Hioki
Kenji Harada
Kenji Harada
Application Number:
JP2001384127A
Publication Date:
November 01, 2006
Filing Date:
December 18, 2001
Export Citation:
Assignee:
Fudo Construction Co., Ltd.
International Classes:
B09C1/00; B09C1/04; (IPC1-7): B09C1/04
Domestic Patent References:
| JP7136631A | ||||
| JP8323339A | ||||
| JP2002001296A | ||||
| JP2002013129A | ||||
| JP6315675A | ||||
| JP2000202425A |
Attorney, Agent or Firm:
Kenji Akatsuka
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