A fully automatic deionizer comprising five sub-systems for removing ionic
contaminants from various liquids at low energy consumption is devised.
Based on the charging-discharging principle of capacitors, the deionizer
conducts deionization through applying a low DC voltage to its electrodes
for adsorbing ions, while more than 30% of the process energy is recovered
and stored by discharging the electrodes. At the mean time of discharge,
surface of the electrodes is regenerated on site and reset for performing
many more cycles of deionization-regeneration till the desirable
purification is attained. In one moment, both deionization and
regeneration proceed simultaneously on different groups of electrode
modules, and in the next moment the electrode modules quickly switch the
two processes. Such swift reciprocating actions are engaged in
synchronized coordination of sub-systems of electrode modules, energy
management, fluid flow, and automatic control.
