Patent ID: 9181108
Filing Date: 2015-11-10
Classification: C02F,G21F

Abstract:
1. A method for decontaminating liquid effluent comprising at least one radioactive chemical element to be removed, the method comprising: producing in situ, by reaction between appropriate reagents, in a first zone of a reactor, solid particles configured to capture and retain the at least one radioactive chemical element by at least one of coprecipitation, adsorption and ion exchange; bringing into contact in a stirred fluidized bed, in the first zone of the reactor, the liquid effluent with the solid particles, whereby the solid particles are put into suspension into a fluid upflow constituted by the liquid effluent and capture and retain the at least one radioactive chemical element by at least one of coprecipitation, adsorption and ion exchange; settling the solid particles having captured and retained the at least one radioactive chemical element, in a second zone of the same reactor, wherein the second zone is separate from the first zone; obtaining a solid phase including the solid particles containing the at least one radioactive chemical element and a liquid phase with a reduced content of the at least one radioactive chemical element; and separating the solid phase and the liquid phase.