Electrochemical decontamination electrolyte and preparation method and application thereof

Abstract

The invention relates to the technical field of radioactive waste treatment, and provides an electrochemical decontamination electrolyte and a preparation method and application thereof. The electrochemical decontamination electrolyte is an aqueous solution, and solutes are prepared from phosphoric acid, oxalic acid, citric acid, tartaric acid, hydrogen peroxide and glacial acetic acid. Accordingto the electrochemical decontamination electrolyte and the preparation method and application thereof, the types of solutes of the electrochemical decontamination electrolyte are reasonably matched, and the dosage of the solutes is reasonably controlled, so that the electrochemical decontamination electrolyte which is good in decontamination effect, high in decontamination speed and capable of easily treating generated secondary waste liquid and residues is obtained; and the electrochemical decontamination electrolyte is suitable for overall or local electrochemical decontamination of radioactive contaminated waste stainless steel. In addition, in the electrochemical decontamination electrolyte, oxalic acid, citric acid, tartaric acid and glacial acetic acid are all organic acids and do not contain N and Cl ions, the electrochemical decontamination electrolyte is very beneficial to a glass solidification treatment system of decontamination waste liquid, and thus the generated waste liquid is easy to treat through the glass solidification system.

Description

technical field [0001] The invention relates to the technical field of radioactive waste treatment, in particular to an electrochemical decontamination electrolyte and a preparation method and application thereof. Background technique [0002] Human nuclear activities include the nuclear industry, civil nuclear technology, scientific research and technology, etc. All of these processes involve radioactive materials, and the materials they come into contact with are contaminated by radionuclides. During nuclear activities, when nuclear facilities need to be maintained or decommissioned, they need to be decontaminated to reduce occupational exposure, reduce potential release of radioactive substances, and recycle old facilities. Metal materials commonly used in nuclear facilities include stainless steel and carbon steel, among which stainless steel is often used to store and transport strong radioactive pollutants. [0003] For metal radioactively contaminated materials, phys...

AI Technical Summary

Problems solved by technology

[0011] In short, the current electrochemical decontamination of radioactively contaminated waste stainless steel has the problems of unsuitable electrolyte, poor decontamination effect, and difficult to deal with secondary waste liquid.