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US 4,161,445 AGranted
Process for the desalination of salt containing water
OwnerDudley W. Coilletinventor
Life of this patent
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Abstract
Water which contains contaminants such as brine may be subjected to a desalination process and made potable thereby by treating the water in a reverse osmosis and ion exchange system, the heat which is present in the water source being utilized to thermally regenerate the ion exchange resin.
Claims3
A process for forming potable water from a salt-containing water source comprising the steps of
- (a) passing water from said water source in a stream through a heat exchange zone, wherein it is cooled,
- (b) passing said cooled water stream through a reverse osmosis membrane zone to form a permeate water stream,
- (c) passing said permeate stream through a thermal ion exchange desalination resin bed to form a potable water stream,
- (d) preheating a regenerant water stream by heat generated during cooling of said water source stream in said heat exchange zone, and
- (e) periodically thermally regenerating said desalination resin by passing said preheated regenerated stream through said resin bed.
2 more elements
Dependencies are inferred from the claim text.