Method for reusing waste salt after mixed ion exchange resin is oxidized by ternary carbonate molten salt

The invention discloses a method for reusing waste salt after mixed ion exchange resin is oxidized by ternary carbonate molten salt, and belongs to the technical field of organic solid waste reutilization treatment. The invention solves the problem that the reaction cost is increased due to the waste of unreacted carbonate after the mixed ion exchange resin is treated by the existing ternary molten salt system. The method comprises the following steps: firstly, fully contacting mixed ion exchange resin with ternary carbonate molten salt, wherein the ternary carbonate molten salt can effectively adsorb generated sulfur dioxide in the reaction process; then, through software simulation and thermodynamic calculation, the mass of carbonate consumed in the molten salt oxidation process is obtained, new salt of a certain proportion is supplemented into the waste salt according to the result, the waste salt is reused, and the cost of mixed ion exchange resin treatment through molten salt oxidation can be effectively