Patent ID: 8652315
Filing Date: 2014-02-18
Classification: B01D,C02F

Abstract:
1. A method for removing ions from a polar liquid, comprising: providing a device comprising at least one housing containing at least one compartment and in which an electrode and a counter-electrode are located at two different ends of the device, and containing an ion-exchange membrane, wherein an electrochemically regenerable ion-exchange material is placed between the electrode and the counter-electrode, the housing comprising one inlet for an entering liquid flow, said inlet being located at the electrode end of the device, and an outlet for a deionized liquid, said outlet being located at the counter-electrode end of the device or at an ion-exchange membrane end of the device, said ion-exchange membrane being a bipolar membrane and being placed between the electrodes, wherein the device comprises valves for splitting the entering liquid flow and at least a second outlet for a liquid used to rinse the electrode, said second outlet being located at the electrode end of the device; splitting said polar liquid into first and second streams; flowing said first stream through said electrochemically regenerable ion-exchange material, causing ions to migrate in the direction reverse to the flow of said first stream through said electrochemically regenerable ion-exchange material; and rinsing one of said electrodes or said ion-exchange material with said second stream.