METHOD AND DEVICE FOR CLEANING PROCESS AND NATURAL WATER FROM RADIONUCLIDES Russian patent published in 1997 - IPC

FIELD: electrosorption cleaning of process and natural water from radionuclides in ion form. SUBSTANCE: method involves adsorption of impurity ions from solution being cleaned by sorbent inserted between two electrodes placed at potential difference sufficient for resistive heating of this solution. Resistive heating results in creation of convective flow of solution in near-anode space along sorbent block; in the process, ion current of impurities flows from near-anode space to sorbent block. Potential difference is usually 25 to 250 V. Device implementing this method has cylindrical structure with coaxially installed external cathode and internal anode. Sorbent block is placed in interelectrode space near cathode coaxially to electrodes. Cavity passing solution being cleaned is located between anode and sorbent block. Device operates in submerged condition without forced pumping of solution being cleaned and may be found useful for cleaning solutions in vessels, tanks, wells, and water reservoirs. EFFECT: enlarged functional capabilities. 3 cl, 2 dwg