Title:
PURIFICATION METHOD FOR UNDERGROUND SOIL POLLUTED WITH ORGANIC CHLORINE COMPOUND
Document Type and Number:
Japanese Patent JP2005058893
Kind Code:
A
Abstract:
To purify underground soil polluted with organic chlorine compounds like trichloroethylene and tetrachloroethylene by eliminating, the organic chlorine compounds as pollutants.
Underground water pumped up from the underground soil through one well 2 is boiled to be vaporized by feeding the water to a vaporizer 6 kept in a pressure reduced below the atmospheric pressure, or the water is deaerated by feeding the water to a deaerator 14, dissolving air or other gas, or without dissolving gas. Then, treated water from the vaporizer 6 or from the deaerator 14 is added with a nutrient of anaerobic microorganisms through a pipe 10, and returned to the underground soil at a place distant from the pumped up place of the water through another well 3.
Inventors:
MIURA MICHIO
Application Number:
JP2003291536A
Publication Date:
March 10, 2005
Filing Date:
August 11, 2003
Export Citation:
Assignee:
SASAKURA ENG CO LTD
International Classes:
C12N1/00; B01D19/00; B09C1/00; B09C1/02; B09C1/04; B09C1/08; B09C1/10; C02F1/20; (IPC1-7): B09C1/10; B01D19/00; B09C1/02; B09C1/04; B09C1/08; C02F1/20; C12N1/00
Attorney, Agent or Firm:
Akio Ishii
Tadashi Higashino
Hiroyuki Nishi
Tadashi Higashino
Hiroyuki Nishi
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