Patent ID: 9731986
Date: 2017-08-15
CPC Classifications: C02F

Claim:
1. An apparatus for water treatment using capacitive deionization, the apparatus comprising: a first filter unit and a second filter unit allowing dissolved solids included in an introduced fluid to be adsorbed on electrodes to generate purified water when a water purification voltage is applied to the electrodes, and allowing the dissolved solids adsorbed on the electrodes to be desorbed to generate regenerated water when a regeneration voltage is applied to the electrodes, respectively; and a controller iteratively alternatively applying the water purification voltage and the regeneration voltage to the first filter unit and the second filter unit to generate purified water having a pre-set target total dissolved solids (TDS) value, wherein the controller controls the period of applying the regeneration voltage to the first filter unit and the second filter unit to be shorter than the period of applying the water purification voltage to the first filter unit and the second filter unit, and wherein one of the first filter unit and the second filter unit completes a regeneration operation and starts a water purification operation during the water purification operation of another of the first filter unit and the second filter unit, creating a time period in which both of the first filter unit and the second filter unit perform the water purification operation.