METHOD OF PURIFYING GROUND WATER CONTAMINATED WITH CHLORINATED ORGANIC COMPOUND

Title:

METHOD OF PURIFYING GROUND WATER CONTAMINATED WITH CHLORINATED ORGANIC COMPOUND

Document Type and Number:

Japanese Patent JP2004160458

Kind Code:

A

Abstract:

To provide a method of decomposing a contaminant in the ground water contaminated with a chlorinated organic compound in a short time at normal temperature.

The ground water contaminated with the chlorinated organic compound is purified rapidly by adding copper-containing iron powder thereto and mixing them to decompose the chlorinated organic compound. The copper content of the copper-containing iron powder is 0.1-20wt.% and the ratio of the added copper-containing iron powder to the ground water is 0.1-10wt.%. Each of sixteen kinds of chlorinated organic compounds is decomposed significantly within thirteen days when tested by using the copper-containing iron powder. The decomposition rate is remarkably improved in comparison with the case that iron powder containing no copper is used. The substance produced by the decomposition reaction is a harmless gas such as methane, ethane, ethylene, propane and propene.

Inventors:

ITO HIROYUKI
SHIRATORI JUICHI

Application Number:

JP2003435362A

Publication Date:

June 10, 2004

Filing Date:

December 26, 2003

Export Citation:

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Assignee:

DOWA MINING CO

International Classes:

C02F1/70; C07B35/06; C07C19/01; C07C19/03; C07C19/04; C07C19/041; C07C19/045; C07C19/05; C07C19/055; C07C21/073; C07C21/10; C07C21/12; (IPC1-7): C02F1/70; C07B35/06; C07C19/01; C07C19/03; C07C19/04; C07C19/041; C07C19/045; C07C19/05; C07C19/055; C07C21/073; C07C21/10; C07C21/12

Foreign References:

WO1997004868A1	1997-02-13
US3737384A	1973-06-05

Attorney, Agent or Firm:

Kenji Wada
Komatsu Taka
Koji Hagiwara

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