Title:
PURIFYING METHOD OF CONTAMINATED UNDERGROUND WATER AND/OR CONTAMINATED STRATUM, AND DEVICE THEREFOR
Document Type and Number:
Japanese Patent JP3565476
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a purifying method and device for contaminated underground water and/or contaminated stratum high in purifying efficiency.
SOLUTION: In this purifying method, injection water is prepared by pumping up underground water from an underground stream and dissolving at least one of a gas required to proliferate a decomposed microorganism of a pollutant (hereafter referred to as proliferating gas) or a nutrient salt to the pumped underground water and the prepared injection water is injected into the underground stream to purify the contaminated underground water and/or the contaminated stratum with the microorganism. The underground water in the underground stream is pumped up from a pumping point 16 of a pumping.injecting well 18 and at least one of the proliferating gas or the nutrient salt is dissolved to the pumped underground water to prepare the injection water on the ground and the prepared injection water is injected into the underground stream from an injecting point separated upward from the pumping point of the same well.
Inventors:
Takayuki Hashimoto
Application Number:
JP1687598A
Publication Date:
September 15, 2004
Filing Date:
January 29, 1998
Export Citation:
Assignee:
Organo Corporation
International Classes:
B09C1/10; C02F3/00; C02F3/02; C02F3/34; E02D19/12; (IPC1-7): C02F3/00; B09C1/10; C02F3/02; C02F3/34; E02D19/12
Domestic Patent References:
| JP839083A | ||||
| JP5023692A | ||||
| JP9234490A | ||||
| JP10216695A | ||||
| JP5248202A |
Attorney, Agent or Firm:
Shunsuke Nakao
Yoshimi Hatanaka
Kiyoshi Inagaki
Yoshimi Hatanaka
Kiyoshi Inagaki
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