According to MIT, this technology works even at small scale, with one the size of a suitcase able to desalinate 6 litres per hour, and only needing to be serviced every few years.
According to MIT, this technology works even at small scale, with one the size of a suitcase able to desalinate 6 litres per hour, and only needing to be serviced every few years.
If you can get it dry enough, there are huge underground salt mines that could be back filled.
But an larger ocean usually has enough currents that it dillutes out well enough to not be a major issue.