METHOD OF PROCESSING LIQUID RADIOACTIVE WASTES Russian patent published in 2017 - IPC G21F9/00 

FIELD: physics.

SUBSTANCE: method of processing liquid radioactive wastes includes the supply of a mixture of liquid radioactive wastes and sodium chloride to the mixing zone of the plasma-chemical reactor. The mixture of liquid radioactive wastes is dispersed inside the plasma-chemical reactor by feeding them to the nozzles located in the upper part of the plasma-chemical reactor, and simultaneously with the water-cooled copper electrode, a monoelectrode high-frequency flare discharge directed vertically downward into the plasma-chemical reactor is generated. At that, atmospheric air is used as the plasma-forming gas. The mixture of liquid radioactive wastes with sodium chloride in an air-plasma stream is processed at a mass mixture-air ratio of 1:3, the temperature in the volume of the plasma-chemical reactor is maintained, at least, 800°C. Then, the resulting products of plasma-chemical processing in the gas phase are withdrawn and purified in the waste gas purifying unit, and the products of plasma-chemical processing in the condensed phase in the form of a sodium chloride melt including metal oxide compounds are precipitated, followed by extraction from the plasma-chemical reactor.

EFFECT: invention makes it possible to reduce the volume of radioactive wastes generated.

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