First, a review on how reverse osmosis works. Reverse osmosis (RO) is a separation process that uses pressure to force a solvent (water) through a membrane, which retains the solute (contaminant) on one side and allows the pure solvent (water) to pass to the other side.
It can also be said that reverse osmosis is the process of forcing a solvent from a region of high solute concentration through a membrane to a region of low solute concentrate by applying pressure.
During the reverse osmosis process, water is forced through the RO membrane under pressure. This causes the water molecules to pass through the tiny pores of the membrane, leaving behind a concentrated solution of impurities, which is then flushed away as wastewater. The purified water that passes through the RO membrane collects on the other side, resulting in clean, filtered water.
Reverse osmosis pre-filtration incorporates sediment and carbon filtration and are designed to protect the delicate reverse osmosis membrane.
The RO membrane plays a crucial role in the effectiveness of reverse osmosis water filtration. The RO membrane is a semi-permeable barrier that allows water molecules to pass through while blocking the passage of larger molecules, ions, and particles.