Electrolyte for electrochemical decontamination, and preparation method and application thereof

Abstract

The present disclosure relates to the technical field of radioactive waste treatment and provides an electrolyte for electrochemical decontamination and a preparation method and application thereof. The electrolyte for electrochemical decontamination provided in the present disclosure is an aqueous solution including the following solutes: phosphoric acid, oxalic acid, citric acid, tartaric acid, hydrogen peroxide and glacial acetic acid. According to the present disclosure, an electrolyte for electrochemical decontamination that has a good decontamination effect and allows for fast decontamination is obtained by reasonably combining different types of solutes and controlling the levels of the solutes, and resulting secondary waste solution and residues are easy to treat. The electrolyte for electrochemical decontamination is suitable for overall or local electrochemical decontamination of radioactively contaminated stainless steel scrap. In addition, in the electrolyte for electrochemical decontamination provided in the present disclosure, the oxalic acid, the citric acid, the tartaric acid and the glacial acetic acid are organic acids and no N and Cl ions are present, which may be highly advantageous for a glass solidification system for spent decontamination solution. Thus, the resulting waste solution can be treated readily by the glass solidification system.

Dependencies are inferred from the claim text.