| 摘要 |
PURPOSE:To dispense with the exchange of ion exchange resin in water treat ment and reduce maintenance cost by providing a continuous deionizer which separates and condenses and discharges ions. CONSTITUTION:Ions in recycled water are separated and condensed with a continuous deionizer 21 and those are discharged through a three-way valve 22 by a discharge system L5. A control unit 26 changes the three-way valve 22 over to the side of a return system L7 when the water of a water treatment system L4 runs short, based on the water level signal from a water level sensor 24, and returns the drain of a continuous deionizer 21 to a recovered water tank 10 so as to dissolve the shortage of recovered water. At this time, an alarm signal output means 32 issues an alarm. Moreover, in case of dissolving the water shortage within the water treatment system L4 by increasing the quantity of water condensed in a condenser 9, it issues an alarm when the flow rate of condensed water supplied to the recycled water tank 10 through a system L10 mounts to the specified value or more. This obviates the necessity of replacement of members for a long period to reduce the maintenance cost. |
