Title:
PURIFICATION METHOD OF HAZARDOUS HEAVY METAL CONTAMINATED SOIL
Document Type and Number:
Japanese Patent JP2004167466
Kind Code:
A
Abstract:
To completely precipitate hazardous metal ions, to remove the precipitation in a notch tank, and to return it to an observation hole as water not containing heavy metal.
A salt solution having heavy metal ions is passed through a zeolite layer inside of the notch tank, and separated from ground water. Only the ground water is returned to the observation hole, and the precipitation is trapped by the zeolite layer and stored in a fixed place.
Inventors:
HIROSHIMA TOSHIO
Application Number:
JP2002368997A
Publication Date:
June 17, 2004
Filing Date:
November 18, 2002
Export Citation:
Assignee:
HIROSHIMA TOSHIO
NISSHIN CHIKA KAIHATSU KOGYO K
NISSHIN CHIKA KAIHATSU KOGYO K
International Classes:
B09B3/00; B09C1/08; B09C1/02; (IPC1-7): B09C1/02; B09B3/00; B09C1/08