A METHOD FOR PURIFICATION OF WATER USING CAPACITIVE DEIONISATION

摘要

Disclosed is a method of deionising water by capacitive deionisation comprising repeating series of cycles during which water is passed through at least one pair of oppositely charged electrodes, each cycle comprising: (i) a charging step; (ii) a first short-circuiting step; (iii) a discharging step consisting of reversal of the applied charge on the electrodes; and (iv) a second short-circuiting step, wherein polarity applied to each electrode in each pair of oppositely charged electrodes during said charging step of a given series of repeating cycles is reversed during the charging step of the immediately following series of repeating cycles and wherein each said series comprises 10 to 20 cycles.