SYSTEM FOR REMOVING MINERALS FROM A BRINE USING ELECTRODIALYSIS

摘要

A system for removing minerals from a brine using electrodialysis. One system includes a gypsum removal system configured to receive a feed stream having a first amount of gypsum, to extract at least a portion of the gypsum from the feed stream, and to produce a first output having a second amount of the gypsum less than the first amount of the gypsum. The system also includes an electrodialysis (ED) system fluidly coupled to the gypsum removal system and configured to receive the first output from the gypsum removal system, to produce a second output having a substantially sulfate hardness free sodium sulfate solution, to produce a third output having a sodium chloride solution, and to produce a fourth output having a mineral solution.

主权项

1. A system for removing minerals from a feed stream, comprising:
a gypsum removal system configured to receive the feed stream having a first amount of gypsum, to extract at least a portion of the gypsum from the feed stream, and to produce a first output having a second amount of the gypsum less than the first amount of the gypsum; an electrodialysis (ED) system fluidly coupled to the gypsum removal system and configured to receive the first output from the gypsum removal system, to produce a second output comprising a substantially sulfate hardness free sodium sulfate solution, to produce a third output comprising a first sodium chloride solution, and to produce a fourth output comprising a first mineral solution; and an ion exchange brine softener fluidically coupled to the ED system and the gypsum removal system, wherein the ion exchange brine softener is configured to receive the first sodium chloride solution to generate a second sodium chloride solution and a second mineral solution, and to direct the second mineral solution to the gypsum removal system, and wherein a first sodium chloride concentration of the first sodium chloride solution is less than a second sodium chloride concentration of the second sodium chloride solution.