| 摘要 |
<P>PROBLEM TO BE SOLVED: To suppress the fluctuation of pressure applied to a reverse osmosis membrane to prolong the service life thereof even when increasing a purified water production amount per unit time in production of the purified water using the reverse osmosis membrane. <P>SOLUTION: A device 1 for producing the purified water comprises: the first and second reverse osmosis membrane modules 31 and 32; the first and second raw water supply lines 10 and 20 provided with the raw water feeding pumps 16 and 26 for feeding a raw water to the modules 31 and 32, respectively; a purified water tank 35 connected to the purified water outlet sides of the modules 31 and 32; a purified water feeding line 36 for feeding the purified water in the tank 35; and a control part for controlling the raw water pumps 16 and 26 of the first and second raw water feeding lines 10 and 20. The device enables switching of both-line operation operating both raw water pumps 16 and 26 of the first and second raw water feeding lines 10 and 20, and a first-line operation operating the raw water pump 16 of the line 10 and stopping the raw water pump 26 of the line 20. <P>COPYRIGHT: (C)2013,JPO&INPIT |
