Title:
DEVICE FOR SUPPLYING WATER CONTAINING DISSOLVED GAS AND PROCESS FOR PRODUCING WATER CONTAINING DISSOLVED GAS
Document Type and Number:
WIPO Patent Application WO/2010/113863
Kind Code:
A1
Abstract:
A device for supplying water containing a dissolved gas and a process for producing water containing a dissolved gas are provided with which it is possible to stably supply dissolved-gas-containing water having a low dissolved-gas concentration (low degree of saturation). Oxygen gas is supplied through gas feed piping (31) to a gas-phase chamber (13), and a vacuum pump (35) is operated simultaneously therewith to evacuate the gas-phase chamber (13). Raw water is supplied through raw-water piping (21) to a liquid-phase chamber (12). Some of the oxygen within the gas-phase chamber (13) permeates a gas-permeable film (11) and dissolves in the raw water within the liquid-phase chamber (12). Thus, water containing a dissolved gas is produced. The remainder of the oxygen within the gas-phase chamber (13) is sucked with the vacuum pump (35) together with condensed water and discharged through discharge piping (33). The dissolved-oxygen concentration of the water containing a dissolved gas is measured with a dissolved-gas meter (23), and the degree of opening of a gas flow control valve (32) is regulated so that the measured concentration becomes a desired value.
Inventors:
TOKOSHIMA, Hiroto (4-7 Nishishinjuku 3-chome, Shinjuku-k, Tokyo 83, 〒1608383, JP)
床嶋裕人 (〒83 東京都新宿区西新宿三丁目４番７号 栗田工業株式会社内 Tokyo, 〒1608383, JP)
床嶋裕人 (〒83 東京都新宿区西新宿三丁目４番７号 栗田工業株式会社内 Tokyo, 〒1608383, JP)
Application Number:
JP2010/055551
Publication Date:
October 07, 2010
Filing Date:
March 29, 2010
Export Citation:
Assignee:
KURITA WATER INDUSTRIES LTD. (4-7 Nishishinjuku 3-chome, Shinjuku-ku Tokyo, 83, 〒1608383, JP)
栗田工業株式会社 (〒83 東京都新宿区西新宿三丁目４番７号 Tokyo, 〒1608383, JP)
TOKOSHIMA, Hiroto (4-7 Nishishinjuku 3-chome, Shinjuku-k, Tokyo 83, 〒1608383, JP)
栗田工業株式会社 (〒83 東京都新宿区西新宿三丁目４番７号 Tokyo, 〒1608383, JP)
TOKOSHIMA, Hiroto (4-7 Nishishinjuku 3-chome, Shinjuku-k, Tokyo 83, 〒1608383, JP)
International Classes:
B01F1/00; B01F5/06; B08B3/08; H01L21/304
Attorney, Agent or Firm:
SHIGENO, Tsuyoshi (Nissin bldg, 9F 5-10, Shinjuku 2-chome, Shinjuku-k, Tokyo 22, 〒1600022, JP)
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