Method and means for desalination of seawater and brackish water

Details Method and means for desalination of seawater and brackish water Method and means for desalination of seawater and brackish water

1991-01-22

1992-01-21

Spear, Frank

Liquid purification or separation

Processes

Liquid/liquid solvent or colloidal extraction or diffusing...

210644, 21032178, C02F 144

Patent

active

050825640

ABSTRACT:
The method and mechanism for desalinating seawater and brackish water in which saline water is divided into inside and outside streams. The inside stream is moved through the inside of a transport membrane. The outside stream moves across the outside of the membrane. Ions cross the membrane from one stream to another and more ions are moved from the inside stream to the outside stream than are moved from the outside stream to the inside stream. The process is powered by an Na,K-pump in which Na.sup.+ ions are moved from the inside stream to the outside stream and K.sup.+ ions move in the opposite direction. After the inside stream leaves the transport membrane, the K.sup.+ ions are replaced by Na.sup.+ ions by a suitable ion exchanger.

REFERENCES:
patent: 3357917 (1967-12-01), Humphreys
patent: 3532621 (1970-10-01), Hough
patent: 3670897 (1972-06-01), Frank

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