초록 ▼

In discarding the used ion exchange resin by the demineralizer provided in the cooling system of an atomic reactor, the radioactivity-rich ion exchange resin and the radioactivity-rich crud can be treated separately by introducing 0.5% by weight of sodium hexamethaphosphate into a slurry of the ion

In discarding the used ion exchange resin by the demineralizer provided in the cooling system of an atomic reactor, the radioactivity-rich ion exchange resin and the radioactivity-rich crud can be treated separately by introducing 0.5% by weight of sodium hexamethaphosphate into a slurry of the ion exchange resin, irradiating supersonic of 20 to 60 kHz in frequency to the slurry of the ion exchange resin and removing the radioactive crud from the ion exchange resin.

대표청구항 ▼

A process for removing crud adsorbed on ion exchange resin and separating the ion exchange resin from the crud comprising: providing a slurry comprising ion exchange resin having crud adsorbed thereon; supersonically irradiating the slurry to excoriate and remove the crud from the surface of the ion

A process for removing crud adsorbed on ion exchange resin and separating the ion exchange resin from the crud comprising: providing a slurry comprising ion exchange resin having crud adsorbed thereon; supersonically irradiating the slurry to excoriate and remove the crud from the surface of the ion exchange resin and to float the excoriated crud to the surface of the slurry; reacting a dispersing agent with the excoriated crud to form a dispersed and stabilized colloid by charging the surface of the crud either positively or negatively to prevent the crud from readsorbing on the ion exchange resin due to static attraction; and separating a slurry containing the dispersed and stabilized colloid from the ion exchange resin from which the crud has been removed.