Sand salt content reduction system - delivers water with low salt concentration into mass after which draining takes place

摘要

The system reduces the salt content of sand by adding water with a relatively low concn. of dissolved salts. The water is delivered into the spaces in a mass of sand contg. soluble salts so as to fill them almost completely, after which they are emptied by draining the water away, this taking the salt in the sand with it. The water can be delivered as a layer onto the top of the sand, so as to sink through it. The system is partic. for use when dredging from the seabed.