Reverse Osmosis (RO) is a simple process in which dissolved inorganic solids (such as salts) are removed from the water. This is done by water pressure pushing the water through a semi permeable membrane. See RO
Around 95-99% of the dissolved salts, particles, and bacteria are flushed away by the reverse osmosis membrane. Not only does this make the water look, smell, and taste better; it also lowers production costs in commercial use.
Most Industrial Reverse Osmosis Systems work the same way and contain the same basic components and the service from your supplier. The important point to remember when buying a RO System is the quality of the filters and membranes as well as the team who will be servicing your equipment in the future.