FIELD: nuclear energy.
SUBSTANCE: invention relates to processing liquid radioactive wastes. Method of processing liquid radioactive wastes involves the use of an agent for cobalt decomplexation, introduction in liquid radioactive wastes of a sulfide-containing substance and separation of radioactive sediment from the solution. As an agent for cobalt decomplexation used is a soluble nickel(II) salt, which is added to liquid radioactive wastes having the pH from 3 to 12 together with a selective to cesium sorbent based on a transition metal ferrocyanide. Solution is stirred for at least 1 hour. Sulfide-containing substance is introduced in it, the suspension is mixed for at least 0.5 hour.
EFFECT: invention provides higher efficiency of the method due to its simplification, providing a high degree of LRW purification from radionuclides with complex chemical and radiochemical compositions at a wide pH range of initial solutions.
5 cl, 6 ex
