Title:
METAL RECOVERY METHOD FOR RECOVERING METAL FROM WASTEWATER, METAL-SEPARATING SUBSTANCE FOR USE IN RECOVERY OF METAL FROM WASTEWATER, AND WATER PURIFICATION DEVICE UTILIZING THE SUBSTANCE
Document Type and Number:
WIPO Patent Application WO/2011/070798
Kind Code:
A1
Abstract:
Disclosed are: a metal recovery method which can separate and recover a metal from wastewater rapidly and in a large quantity; a substance for use in the separation of a metal; and a water purification device utilizing the substance.
Specifically disclosed are: a metal-separating substance which can be used for the recovery of a metal from wastewater, which is characterized by comprising a water-soluble polymer having an acidic group and an anion exchange resin; and a water purification device utilizing the metal-separating substance, which is characterized by comprising a first mixing vessel in which the wastewater is mixed with an aqueous solution of the water-soluble polymer having an acidic group and a second mixing vessel in which a solution produced by mixing the wastewater with the aqueous solution of the water-soluble polymer having an acidic group with an anion exchange resin, wherein a filter is arranged in the inferior part of the second mixing vessel, and the filter has pores so that the anion exchange resin can be held by the pores.
Inventors:
SASAKI Hiroshi (HITACHI LTD., 1-1, Omikacho 7-chome, Hitachi-sh, Ibaraki 92, 〒3191292, JP)
佐々木 洋 (〒92 茨城県日立市大みか町七丁目１番１号 株式会社日立製作所 日立研究所内 Ibaraki, 〒3191292, JP)
佐々木 洋 (〒92 茨城県日立市大みか町七丁目１番１号 株式会社日立製作所 日立研究所内 Ibaraki, 〒3191292, JP)
Application Number:
JP2010/051840
Publication Date:
June 16, 2011
Filing Date:
February 09, 2010
Export Citation:
Assignee:
HITACHI, LTD. (6-6 Marunouchi 1-chome, Chiyoda-ku Tokyo, 80, 〒1008280, JP)
株式会社日立製作所 (〒80 東京都千代田区丸の内一丁目６番６号 Tokyo, 〒1008280, JP)
SASAKI Hiroshi (HITACHI LTD., 1-1, Omikacho 7-chome, Hitachi-sh, Ibaraki 92, 〒3191292, JP)
株式会社日立製作所 (〒80 東京都千代田区丸の内一丁目６番６号 Tokyo, 〒1008280, JP)
SASAKI Hiroshi (HITACHI LTD., 1-1, Omikacho 7-chome, Hitachi-sh, Ibaraki 92, 〒3191292, JP)
International Classes:
C02F1/42; B01J47/00; B01J47/10; B01J49/00; B03C1/00; B03C1/28; C02F1/46; C02F1/48; C02F1/62
Attorney, Agent or Firm:
ASAMURA PATENT OFFICE, p.c. (Room 331, New Ohtemachi Bldg. 2-1, Ohtemachi 2-chome, Chiyoda-k, Tokyo 04, 〒1000004, JP)
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