FIELD: technological processes.
SUBSTANCE: invention relates to chemical technology, specifically to technology of extraction treatment of spent nuclear fuel (SNF). Method for transannular regeneration of recycle extractant includes contact of recycle extractant and regenerating solution flows in porous layer with communicating pores and separation of treated extractant and spend washing solution flows, besides recycle extractant and regenerating solution are sent for contact at the ratio of extractant phase flows to regenerating solution equal to 15:1-35:1, efficient diametre of porous channels of layer 0.02-0.04 cm with load of phase flows sum at free porous section of layer up to 10 m3/m2*hour and time of recycle extractant presence in layer for at least 2 minutes at the temperature of 20-50°C. Porous layer is formed as sintered, pressed or filled with heavy grain material.
EFFECT: improved quality of recycle extractant and reduced amount of selenium-containing radioactive wastes.
7 cl, 2 tbl, 3 ex
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