| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a water treatment system capable of stably supplying pure water to a place to be demanded by a simple system configuration, even when an electric ion exchange apparatus is in regeneration operation. <P>SOLUTION: The water treatment system includes: a membrane separation treatment device 4 for separating supply water W1 into permeate W2 and concentrate W3; the electric ion exchange apparatus 5 for producing first treated water W4 by desalting the permeate W2; a mixed bed ion exchange apparatus 6 for producing second treated water W6 by desalting the permeate W2 or the first treated water W4; a flow passage part capable of switching to (i) a first flow passage causing the permeate W2 to flow to the electric ion exchange apparatus 5 and causing the first treated water W4 to flow to the mixed bed ion exchange apparatus 6, and (ii) a second flow passage causing the permeate W2 to flow to the mixed bed ion exchange apparatus 6 without causing it to flow to the electric ion exchange apparatus 5; and a control part 10 for switching the flow passage part to the first flow passage when the electric ion exchange apparatus 5 is in normal operation, and switching the flow passage part to the second flow passage when the electric ion exchange apparatus 5 is in regeneration operation. <P>COPYRIGHT: (C)2013,JPO&INPIT |
