| 摘要 |
PROBLEM TO BE SOLVED: To provide a decarbonation device and method which enable the excellent production of pure water by causing no mixture of gas, such as air, into permeated through a decarbonation membrane. SOLUTION: The decarbonation device B which is connected between a reverse osmosis membrane device A and an ion exchange resin cylinder C, and removes carbon dioxide gas 4a in the permeate 4 passing through the reverse osmosis membrane device A to send the permeate 4 to the ion exchange resin cylinder C comprises the decarbonation membrane B3, a check valve V1 installed upstream of the decarbonation membrane B3 to prevent the backflow of the permeate 4, and a relief valve V2 installed downstream of the check valve V1 to keep degassed water 5 at a positive pressure state. COPYRIGHT: (C)2008,JPO&INPIT
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