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):

Report Date:

1978-09-11

Pagination or Media Count:

9.0

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

Subject Categories:

  • Civil Engineering

Distribution Statement:

APPROVED FOR PUBLIC RELEASE