I'd have to say that there are many more efficient & less expensive methods to accomplish these tasks.
Also as CaptainIraq stated. The water is removed from the salt, not vice versa. Therefore the "lochs" would eventually be filled with salt & other
contaminant matter, and require constant dredging, which would in turn cost more money & downtime.
I also have the same question as CI with respect to the WIND & WAVE reference you made. How does this factor in with the "loch" design you have
described?