Title:
METHOD AND APPARATUS FOR DRINKING WATER TREATMENT OF MANGANESE-CONTAINING WATER
Document Type and Number:
WIPO Patent Application WO/2004/099089
Kind Code:
A1
Abstract:
A method for the drinking water treatment of a manganese-containing raw water, characterized in that it comprises adding chlorine to a soluble manganese-containing raw water, allowing the resultant raw water (a raw water being added with chlorine) to pass through a bed packed with a manganese dioxide catalyst having a median diameter of 0.3 to 0.7 mm as an upward flow having a linear rate of 300 to 1300 m/day, subjecting the chlorine-added raw water having passed through the packed bed (a raw water having passed through the packed bed) to the filtration using a membrane, to remove the above soluble manganese having been oxidized and insolbilized in the packed bed. The above method allows the treatment of a large quantity of a manganese-containing raw water with a treating tank having a small area, and further allows the prevention of the increase in running cost even when a raw water has a high manganese concentration.
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Inventors:
SHIGETO MIHO (JP)
AOKI NOBUHIRO (JP)
OYACHI HIROYUKI (JP)
AOKI NOBUHIRO (JP)
OYACHI HIROYUKI (JP)
Application Number:
PCT/JP2004/006684
Publication Date:
November 18, 2004
Filing Date:
May 12, 2004
Export Citation:
Assignee:
NGK INSULATORS LTD (JP)
SHIGETO MIHO (JP)
AOKI NOBUHIRO (JP)
OYACHI HIROYUKI (JP)
SHIGETO MIHO (JP)
AOKI NOBUHIRO (JP)
OYACHI HIROYUKI (JP)
International Classes:
B01D61/16; B01J23/34; B01J35/02; C02F1/44; C02F1/72; C02F1/76; (IPC1-7): C02F1/74; C02F1/64; C02F1/44; B01D71/02; B01J23/34; B01J35/02
Foreign References:
| JP2003103275A | 2003-04-08 | |||
| JPS63248495A | 1988-10-14 | |||
| JPH09150162A | 1997-06-10 |
Attorney, Agent or Firm:
Watanabe, Kazuhira (No.8 Kikuboshi Tower Building 20-18,
Asakusabashi 3-chom, Taito-ku Tokyo 53, JP)
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