Patent ID: 6896814
Filing Date: 2005-05-24
Classification: B01D,B01J,C02F

Abstract:
1. A liquid purification process comprising the following steps: (a) providing a feed stream of the liquid to be purified; (b) treating the feed stream in a first module comprising at least one anode and at least one cathode wherein a first voltage is applied across said at least one anode and said at least one cathode to substantially remove at least a first ionic species that causes scaling from said feed stream to produce a first product stream; (c) treating the first product stream in a second module comprising at least one anode and at least one cathode wherein a second voltage different from said first voltage is applied across said at least one anode and said at least one cathode to substantially remove at least a second ionic species from said first product stream to produce a second product stream; and (d) recovering the second product stream.