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Osmotically-assisted desalination method and system

United States Patent

August 12, 2014
View the Complete Patent at the US Patent & Trademark Office
Systems and methods for osmotically assisted desalination include using a pressurized concentrate from a pressure desalination process to pressurize a feed to the desalination process. The depressurized concentrate thereby produced is used as a draw solution for a pressure-retarded osmosis process. The pressure-retarded osmosis unit produces a pressurized draw solution stream that is used to pressurize another feed to the desalination process. In one example, the feed to the pressure-retarded osmosis process is impaired water.
Achilli; Andrea (Reno, NV), Childress; Amy E. (Reno, NV), Cath; Tzahi Y. (Golden, CO)
Board of Regents of the Nevada System of Higher Education, on behalf of the Univeristy of Nevada, Reno (Reno, NV), N/A (Golden, CO), Colorado School of Mines (N/A)
13/ 211,204
August 16, 2011
STATEMENT OF GOVERNMENT SUPPORT This invention was made with United States Government support under a grant from the United States Department of Energy, Grant No. DE-FG02-05ER64143. The United States Government has certain rights in the invention.