ELECTRODIALYZER Russian patent published in 1995 - IPC

FIELD: mechanical engineering. SUBSTANCE: electrodialyzer has electrode chambers, alternating cation-exchange and anion-exchange membranes forming chambers of concentration and demineralization and devices of solution inlet and outlet. Hydraulically permeable strips in the shape of point tips over the surface or deep in the membrane surfaces are formed on the ion-exchange membranes. The strips are oriented perpendicular to the devices of solution inlet and outlet and alternate with strips free from tips. The width of strips free from tips does not exceed the value 10⁶·V·h² (m), where V - the average linear velocity of the solution flow, h - the distance between the membranes. The width of strips having tips is determined by the conditions J_H+ ·S_A= J_OH-·S_k, where J_H+ и J_OH- - the local densities of the ion flows H⁺ and OH^- generated on the surfaces of the anion-exchange and cation-exchange membranes free from tips. EFFECT: enhanced ease of exploitation. 3 tbl, 3 dwg