Accession Number : ADD005433

Title :   Process and Device for Desalinating Water.

Descriptive Note : Patent Application,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON D C

Personal Author(s) : McCormick,Michael E

Report Date : 11 Sep 1978

Pagination or Media Count : 9

Abstract : 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)

Descriptors :   *Patent applications, *Desalination, *Reverse osmosis, Processing equipment

Subject Categories : Civil Engineering

Distribution Statement : APPROVED FOR PUBLIC RELEASE