Combination of a desalination plant and a salinity gradient power reverse electrodialysis plant and use thereof

This invention describes a system that combines a reverse osmosis desalination plant with a power generator that uses salt differences. The desalination plant produces fresh water and very salty brine, which is then fed along with seawater into a reverse electrodialysis unit to generate electricity. A solar heater warms the brine before it enters the power unit, and the generated electricity can help power the desalination plant, reducing its energy needs.

Why it matters: Filed when reverse electrodialysis was a nascent technology. Over two decades, significant advancements in membrane efficiency for reverse electrodialysis and improved solar thermal technology make this energy recovery system more viable and efficient now.

Status: Not in forceListed as no longer active. The specific reason is not in the record we hold.
How hard to build: SpecializedReverse osmosis unit, electrodialysis membranes, system integration.

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