| 摘要 |
PURPOSE: To rapidly and easily set compounding ratio by setting the compounding ratio of an anion exchange resin to a cation exchange resin so as to satisfy a specific equation and passing a rinsing water for regeneration through an ion exchange resin column filled with the resins. CONSTITUTION: The rinsing water in a rinsing water vessel 1 is supplied to an ion exchange resin column 6 through an activated carbon filter 4 by a pump 3. At this time, the composition of the rinsing water before regeneration is defined as a(mol) of amine based rust preventives (triethanol amine) and b(mol) of cation (C1<-> ) (wherein b<a). The ion exchange capacity of the ion exchange resin is defined as c(mol/g) in anion exchange resin (R-H<+> ) and d(mol/g) in cation exchange resin (R-OH<-> ). Further, the quantity of the ion exchange resin in the ion exchange resin column 6 is defined as e(g) in anion exchange resin (R-H<+> ) and f(g) in cation exchange resin. Also, the compounding ratio is set so as to satisfy an equation a/(c×e)=b/(f×d). |
