nature is doing it on over 70% of earth’s surface: Evaporation of water. And eventually it condenses and falls elsewhere on the ground (we call this ‘rain’). And what stays back in the ocean? Right: The somewhat higher concentrated brine. And just because of that is does not become a dead zone. This mentioned process imitates this natural process locally, to have the water where it’s needed.

You should know that the electrical power demand asks for thermal power plants anyway, so why not make a good use of the excess, ‘low quality’ heat to desalinate sea water for a secondary benefit?

Regards – David.