Transport of sulfates of divalent metals [M = Mn(II), Cu(II), Co(II), Ni(II)] in a system made up of multicomponent solution of MSO(4)Nafion membranesulfuric acid solution was studied. It was found that Donnan dialysis results in a recovery factor amounting to 80-90% with the concentration ratio C-M,C-strip/C-M,C-feed not less than 30. The results of M(II)/H countertransport were compared with the results of simple dialysis of single and multiionic solutions. The technique of Donnan dialysis is efficient in preconcentrating ions for further separation in a multimembrane hybrid system employing a specific carrier of ions.