method and apparatus for removing strontium and cesium radionuclides from solutions Russian patent published in 1998 - IPC

FIELD: radiation protection. SUBSTANCE: solution is passed through coaxially arranged filtration chambers interconnected by perforated false bottom. Inside chamber is filled by sorbent selective for cesium radionuclides and outside chamber by sorbent selective for strontium radionuclides. Solution passes consecutively inside and outside chambers. Cesium-absorbing sorbents are preferably based on ferrocyanide and strontium-absorbing ones are preferably zeolites modified by alkali-earth metal phosphates, alkali-earth metal phosphates on fibrous carrier, or manganese on fibrous carrier. EFFECT: reduced gamma-emission dose on surface of working filter. 4 cl, 4 dwg, 4 tbl