| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a method for producing purified water, by which the purified water can be obtained in a short time even after operation resumption of a RO apparatus. <P>SOLUTION: Permeated water obtained by membrane separation of city water by the RO apparatus 10 is stored in a water storage tank 20. During operation stop of the RO apparatus (RO membrane module) 10, the permeated water in the water storage tank 20 is circulated by utilizing a circulation line composed of a permeated water returning line 35, a water collecting pipe 16 and a permeated water line 34. Since the permeated water is circulated during operation stop of the RO apparatus 10, stagnant water is prevented from arising in the water collecting pipe 16 or the like and propagation of bacilli is suppressed. <P>COPYRIGHT: (C)2012,JPO&INPIT |
