In an environment where solar and geothermal electricity are abundant enough to make this work, it would be far easier to condense water straight from the air by refrigeration.
:D and if you scale this to the point where the amount of water vapor in the atmosphere is affected, you can also use some of the abundant energy to boil the ocean to replace that water vapor. :) Same net effect (water is taken from the ocean and salt is not) without actually moving the salt back and forth.