Semicommercial Desalination of Water by the Method of Capacitive Deionization

Investigations into the parameters of a CDI desalinator operating according to a two-step demineralization scheme have been conducted. The process of desalination has been analyzed in conjunction with electrophysical measurements. Various capabilities of postproduction tuning of demineralizer regimes have been demonstrated: recuperation of part of the energy of the dischargeable CDI cell to a chargeable one, reduction in the discharge period due to the application of reverse polarity voltage pulses, and rise in the efficiency by organizing the procedure of taking account of the actual voltage on working electrodes inside the CDI cell. The potential for raising the output of the desalinator has been indicated.