Patent ID: 7744760
Filing Date: 2010-06-29
Classification: B01D,C02F,Y02A,Y02W

Abstract:
1. A method of reducing total dissolved solids in seawater comprising: reducing a concentration of dissolved solids in the seawater in a nanofiltration device to produce a first partially treated water; reducing a concentration of dissolved solids in the first partially treated water in an electrodialysis device to produce a second partially treated water; and reducing a concentration of dissolved solids in the second partially treated water in an electrodeionization device to produce treated water having less than about 1,000 ppm total dissolved solids and a boron content of less than about 0.5 ppm, wherein energy consumption to produce the treated water through the nanofiltration device, the electrodialysis device, and the electrodeionization device is less than about 7 kwh/kgal.