Abrégé

Provided is an industrially feasible method for separating tritiated water from contaminated water. The method for separating tritiated water from light water contaminated by the tritiated water, includes the steps of; adding heavy water to the contaminated water; converting the liquid mixture of the contaminated water and the heavy water into a mixture of the light water and a gas hydrate consisting essentially of the tritiated water and the heavy water as the crystal structure under a condition of converting into the gas hydrate of at least one of the heavy water and the tritiated water, and yet keeping most of the light water in liquid state; and separating the gas hydrate from the light water.

Classes IPC  ?

• B01D 59/08 - Séparation par passage d'une phase à une autre par cristallisation fractionnée, par précipitation, par congélation par zone
• G21F 9/06 - Traitements
• C02F 101/00 - Nature du contaminant
• C02F 101/10 - Composés inorganiques
• B01D 9/00 - Cristallisation
• C02F 1/52 - Traitement de l'eau, des eaux résiduaires ou des eaux d'égout par floculation ou précipitation d'impuretés en suspension
• C02F 1/54 - Traitement de l'eau, des eaux résiduaires ou des eaux d'égout par floculation ou précipitation d'impuretés en suspension utilisant des produits organiques

Abrégé

Provided is a method for industrially separating tritiated water from light water, said method comprising, in the following order: a step in which, by adding heavy water to a liquid mixture containing tritiated water and light water, and, under conditions for forming a gas hydrate of the heavy water and/or of the tritiated water and conditions for maintaining the light water in a liquid state, forming a gas hydrate containing the tritiated water and the heavy water in a crystal structure, the tritiated water and the heavy water are removed from the light water; and a step in which, under conditions for forming a gas hydrate of the tritiated water and conditions for maintaining the heavy water in a liquid state, a liquid mixture, which is obtained by breaking down the structure of the gas hydrate containing the tritiated water and the heavy water and which contains the tritiated water and the heavy water, is made to form a gas hydrate containing the tritiated water in a crystal structure, such that the gas hydrate is separated from the heavy water, after which the tritiated water is collected from the heavy water by breaking down the structure of the gas hydrate containing the tritiated water.

Classes IPC  ?

• B01D 59/08 - Séparation par passage d'une phase à une autre par cristallisation fractionnée, par précipitation, par congélation par zone
• G21F 9/06 - Traitements