| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide the process that can reduce the volume of waste ion- exchange resin as much as possible. SOLUTION: This is a process that a resin mixture of cationic ion-exchange resin and anionic ion-exchange resin is reduced in its volume before its disposal. In this process, the cationic ion exchange resin and the anionic ion-exchange resin are separated from each other, the separated anionic ion-exchange resin is supercritically hydroxylated by reaction with an oxidizing agent free from any substance to form salt in the presence of supercritical water, while the separated cationic ion-exchange resin is supercritically hydroxylated by reaction with an oxidizing agent free from any substance to form salt in the presence of supercritical water and the acids formed are neutralized with an alkali agent.</p> |
