An electrochemical device having ten compartments between electrode compartments , the electrochemical device comprising: an ion-trapping compartment comprising electroactive media consisting of cation-exchange resin , the compartment being bounded by a first anion-selective membrane and a second anion-selective membrane ; an alkaline-collecting compartment positioned adjacent the ion-trapping compartment , the alkaline-collecting compartment defined by a first cation-selective membrane and the first anion-selective membrane , and the alkaline-collecting compartment comprising a first mixture of cation exchange resin and anion exchange resin : a first depleting compartment disposed adjacent the alkaline-collecting compartment , the first depleting compartment defined by the first cation-selective membrane and a third anion-selective membrane ; a concentrating compartment disposed adjacent the first depleting compartment , the concentrating compartment defined by the third anion-selective membrane and a second cation-selective membrane ; wherein the concentrating compartment is adjacent to an anode compartment ; wherein fluid from the ion-trapping collecting compartment is introducible into an cathode compartment ; a second depleting compartment disposed on the other side if the ion trapping compartment and positioned between the ion trapping compartment and the cathode compartment , the second depleting compartment adjacent the alkaline-collecting compartment; the second depleting compartment being defined by the second anion-selective membrane and a third cation-selective membrane ; wherein the remaining compartments of the electrodeionization device comprised of depleting compartments , concentrating compartments and compartments are in the similar order as the compartments described; wherein the first depleting compartment comprises a second mixture of cation exchange resin and anion exchange resin ; wherein the concentrating compartment comprises a mixture of cation exchange resin and anion exchange resin with about 60% anion exchange resin ; similar in composition as the mixture in the first depleting compartment ; and wherein the second depleting compartment comprises a mixture of cation exchange resin and anion exchange resin similar in composition as the mixture in the first depleting compartment ; wherein the first mixture of the ion exchange resins in the alkaline-collecting compartment has similar concentrations as the resins in the depleting compartments and the concentrating compartments . an ion-trapping compartment comprising electroactive media consisting of cation-exchange resin , the compartment being bounded by a first anion-selective membrane and a second anion-selective membrane ; an alkaline-collecting compartment positioned adjacent the ion-trapping compartment , the alkaline-collecting compartment defined by a first cation-selective membrane and the first anion-selective membrane , and the alkaline-collecting compartment comprising a first mixture of cation exchange resin and anion exchange resin : a first depleting compartment disposed adjacent the alkaline-collecting compartment , the first depleting compartment defined by the first cation-selective membrane and a third anion-selective membrane ; a concentrating compartment disposed adjacent the first depleting compartment , the concentrating compartment defined by the third anion-selective membrane and a second cation-selective membrane ; a first depleting compartment disposed adjacent the alkaline-collecting compartment , the first depleting compartment defined by the first cation-selective membrane and a third anion-selective membrane ; a concentrating compartment disposed adjacent the first depleting compartment , the concentrating compartment defined by the third anion-selective membrane and a second cation-selective membrane ; <EOS>