| 摘要 |
PROBLEM TO BE SOLVED: To solve the problem that, as the conventional reverse osmosis membrane method uses a filtration function by the micropores of a filter, so that small amount of micro residue remains in the filtered water, the method cannot produce highly pure water, and the problem that the conventional ion exchange method requires the washing or neutralization by an agent of an ion exchange resin. SOLUTION: In the method for arranging and manufacturing a reverse osmosis unit and an ion exchange unit used for manufacturing the highly pure water by a water purifying device, the ion exchange unit is arranged and combined as a final filtration unit, thereby the highly pure water can be produced efficiently and simply at a low cost. COPYRIGHT: (C)2003,JPO
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