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Our desalination equipment mainly uses semi-permeable membranes to achieve the purpose of separating fresh water from salt. Under normal circumstances, the semipermeable membrane allows the passage of solvent in the solution without allowing the solute to pass through. Due to the high salt content of seawater, if the seawater is separated from the fresh water by a semi-permeable membrane, the fresh water will diffuse through the semi-permeable membrane to one side of the seawater, so that the liquid level on the seawater side rises until a certain height generates pressure, so that Fresh water no longer spreads. This process is called infiltration. If you do the opposite, to get fresh water, as long as the pressure on the seawater in the semi-permeable membrane, the fresh water in the seawater will penetrate the semi-permeable membrane, while the salt is blocked by the membrane in the seawater. This is called reverse osmosis. The reverse osmosis process produces the same quality fresh water, which consumes only 1/40th of the distillation process. Therefore, the reverse osmosis process is now popular throughout the world.
