[en] A new multistage separation method based on the parametric pumping principles and the electroadsorption of ions on high surface electrodes has been investigated. Desalting of aqueous NaCl solution has been carried on using elaborate experimental set up. The periodically changed intensive parameter was the potential difference between two identical carbon electrodes, which comprised the bed of the separation column. Concentration ratios as high as 1/100 were attained between the top and the bottom of the colunn. Two theoretical models were developed. The first one was based on solving the well known flux equation with the suitable boundary and initial conditions. The second one was based on dividino. the column length to perfect mixed cells. Agreement with experimental results was achieved at high initial concentrations where the assumption that the transversal relaxation of the column is shorter than the cycle time was valid. The advantages of the electrochemical parametric pumping separation method and its status among other separation methods is discussed. (Author)