In order to purify the water we need to carry out the process contrary to that of conventional osmosis, it is what is known as Reverse Osmosis. It is a process with membranes. In order to force the passage of the water in the brine stream to the water stream with low salt concentration, it is necessary to pressurize the water to a value higher than the osmotic pressure. As a consequence of this process, the brine will become more concentrated.
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