METHOD FOR DECONATIMNATING SOIL AND THE LIKE AND SYSTEM FOR DECONTAMINATING SOIL AND THE LIKE

摘要

An object to be decontaminated contaminated with radioactive material, e.g., contaminated soil or water, is introduced into eluting solvent and dissolved, and the radioactive material is separated from the object to be contaminated by elution of the radioactive material into the eluting solvent. The eluting solvent containing the radioactive materials dissolved therein and the object to be decontaminated are separated into solid and liquid. The soil after solid-liquid separation and from which the radioactive material is removed is collected, and the eluting solvent after solid-liquid separation and a separated liquid containing contaminated water are introduced into an electrolysis tank and electrolyzed. Metal ions such as those of the radioactive materials are deposited on the cathode in the electrolysis tank. Hydrogen containing tritium generated in electrolysis is collected in the electrolysis tank. The hydrogen is moved to the outside of the electrolysis tank and trapped.

主权项

1. A method for decontamination of an object comprising:
introducing and dispersing or dissolving an object to be decontaminated, which is contaminated with radioactive materials, into an eluting solvent to separate the radioactive materials from the object to be decontaminated by dissolution of the radioactive materials into the eluting solvent, the object to be decontaminated comprising contaminated soil and contaminated water; separating the radioactive materials dissolved in the eluting solvent and the object to be decontaminated into solid and liquid; collecting the soil after said solid-liquid separation and from which the radioactive materials have been removed by elution; electrolyzing the separated liquid containing the eluting solvent and the contaminated water after said solid-liquid separation by introducing the separated liquid into an electrolysis tank provided with and anode and at cathode; depositing metal ions comprising the radioactive materials on the cathode; collecting hydrogen containing tritium generated by the electrolysis in the electrolysis tank; and conveying the hydrogen to outside the electrolysis tank and there trapping the hydrogen.