Process and Device for Desalinating Water.
DEPARTMENT OF THE NAVY WASHINGTON D C
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This patent application describes a device for desalinating salt or brackish water by reverse osmosis using osmotic pressure to supply the necessary power for the desalination process. A tank is divided into first and second compartments by a semi-permeable membrane and two liquids having different chemical potentials are placed in contact with opposite sides of the semi-permeable membrane. Part of one liquid passes by pressure-retarded-osmosis through the semipermeable membrane and forms a pressurized mixed solution of greater volume to provide potential energy which drives a piston which, in turn, provides power for desalination of salt or brackish water by reverse osmosis. Author
- Civil Engineering