The development of radioactive waste treatment technology (III)

A treatment technology to get high volume reduction is subjected to be developed for increasing a disposal capacity. A technology of drying borate waste combined with plastic solidification is found to be one of advanced methods obtaining such volume reduction. The lab-scale experiment to develop a process was already carried out, and a pilot-scale equipment was constructed. Therefore, the optimum opration condition of such process has to be obtained. In order to search the method of reduction of drying time, the properties of dried products with different water content and the supernatant were tested. Unsaturated polyester was diluted with styrene for restraining a viscosity increment in the operation of the solidification process. And the viscosity of the mixture of solidifying media with dried products and properties of their wastes forms were tested. The factors effecting the oxidative degradation of ion-exchange resin and the process factors through the foreign data were analyzed. A fundamental experiment was carried out by changing the volume of hydrogen peroxide under the desired concentration of Fe2+ and spent ion-exchange resins. (Author)