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Title:
METHOD FOR REMOVING HEAVY METAL IN INCINERATION ASH
Document Type and Number:
WIPO Patent Application WO/2004/058423
Kind Code:
A1
Abstract:
A method for removing a heavy metal in an incineration ash, characterized in that it comprises contacting an incineration ash from an industrial waste with water to form an aqueous solution containing a heavy metal, and contacting the aqueous solution with a heavy metal absorbing agent. The method allows the removal of heavy metals in an incineration ash in a simple and easy way with good efficiency and the promotion of the reuse of the incineration ash.

Inventors:
NAKAO HIROSHI (JP)
SUZUKI HIRONORI (JP)
USUI MASATAKA (JP)
NOMURA YASUO (JP)
Application Number:
PCT/JP2003/016784
Publication Date:
July 15, 2004
Filing Date:
December 25, 2003
Export Citation:
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Assignee:
KOWA CO (JP)
NAKAO HIROSHI (JP)
SUZUKI HIRONORI (JP)
USUI MASATAKA (JP)
NOMURA YASUO (JP)
International Classes:
C12N1/20; B01D15/00; B01J20/24; B01J39/04; B01J45/00; B09B3/00; C02F1/28; C02F1/26; (IPC1-7): B09B3/00; C02F1/28
Foreign References:
JPH11199227A1999-07-27
JPS49121355A1974-11-20
US5055402A1991-10-08
JPS5051481A1975-05-08
JPS5051988A1975-05-09
JPS49131984A1974-12-18
JPH0823974A1996-01-30
JP2003103284A2003-04-08
Attorney, Agent or Firm:
The, Patent Corporate Body Aruga Patent Office (3-6 Nihonbashiningyocho 1-chom, Chuo-ku Tokyo, JP)
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