| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a method for regenerating an ion-exchange resin with less regeneration failure. <P>SOLUTION: The method for regenerating ion-exchange resins includes the process of regenerating the ion-exchange resins by feeding a chemical liquid into a resin column 11 housing the ion-exchange resins 12, 13 and the process of squeezing out the residual chemical liquid by supplying squeezing water into the resin column 11. When the chemical liquid is fed to the resin column 11 from chemical storing vessels 16, 17 by ejectors 20, 21 in the above process, driving water inflowing to the ejectors 20, 21 is monitored with flow meters 27, 28, the sucked chemical liquid with flow meters 22, 23 and the chemical concentration in the liquid discharged from an intermediate collector 15 of the resin column 11 with a concentration meter 29. When the squeezing water is fed into the resin column in the above squeezing process, the flow rate of the squeezing water is monitored with the flow meters 27, 28 and the chemical concentration in the liquid discharged from the intermediate collector 15 of the resin column 11 with the concentration meter 29. <P>COPYRIGHT: (C)2009,JPO&INPIT |
