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Title:
APPARATUS FOR PRODUCING WATER CONTAINING NITROGEN DISSOLVED THEREIN
Document Type and Number:
WIPO Patent Application WO/2005/089919
Kind Code:
A1
Abstract:
An apparatus for producing the water containing nitrogen dissolved therein, characterized in that it comprises (A) a membrane type gas dissolution device having a water chamber and a gas chamber being partitioned by a gas-permeable membrane, (B) a deoxygenated water supply pipe for supplying deoxygenated water to said water chamber, (C) a gas dissolving water discharge pipe for discharging a gas dissolving water from said water chamber, (D) a nitrogen supply pipe for supplying nitrogen to said gas chamber, (E) a nitrogen feed adjusting means for adjusting a nitrogen feed to said gas chamber and (F) a pressure gage for measuring the pressure of said gas chamber, wherein the nitrogen feed is adjusted by the nitrogen feed adjusting means, based on the values measured by said pressure gage, and the pressure of said gas chamber is maintained at a predetermined value. The above apparatus allows the production of the water having a concentration of dissolved nitrogen which is controlled with good accuracy by a simple and easy manner.

Inventors:
Kurobe, Hiroshi c/o KURITA WATER INDUSTRIES LTD. (4-7 Nishi-Shinjuku 3-chome, Shinjuku-k, Tokyo 83, 16083, JP)
Morita, Hiroshi c/o KURITA WATER INDUSTRIES LTD. (4-7 Nishi-Shinjuku 3-chome, Shinjuku-k, Tokyo 83, 16083, JP)
Application Number:
PCT/JP2005/005468
Publication Date:
September 29, 2005
Filing Date:
March 17, 2005
Export Citation:
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Assignee:
KURITA WATER INDUSTRIES LTD. (4-7 Nishi-Shinjuku 3-chome, Shinjuku-ku Tokyo, 83, 16083, JP)
Kurobe, Hiroshi c/o KURITA WATER INDUSTRIES LTD. (4-7 Nishi-Shinjuku 3-chome, Shinjuku-k, Tokyo 83, 16083, JP)
Morita, Hiroshi c/o KURITA WATER INDUSTRIES LTD. (4-7 Nishi-Shinjuku 3-chome, Shinjuku-k, Tokyo 83, 16083, JP)
International Classes:
B01D61/00; B01F1/00; C02F1/68; (IPC1-7): B01F1/00; C02F1/68
Attorney, Agent or Firm:
Uchiyama, Mitsuru (TSI Sudacho Building 8F, 4-1 Kandasudacho 1-chome, Chiyoda-k, Tokyo 41, 10100, JP)
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