Would There Be A Way To Take The Residue From Desalinization...?

Question

and use it to make sealed compressed blocks useable for construction?

If used for structures, the salts would deter insects.

If used in sections of roadways the salts would [possibly] keep the moisture at a minimum [snow, ice] .

The product would have to be sealed well enough not to leech.

Answer 1

I think you are a little off base, here.  All de-salting plants I know of just dump water of a little higher salt content back into the source.

To get pure salt, you would have to evaporate the excess water and "dry" it out - big settling and drying ponds.  But then, salt is easily disvolved by water (rain).  I think it would be far more efficient to take sand and make building material out of that (which is what they do where de-salting plants are being used.)  If there is some limestone nearby, it is called cement...

Ron.