Reverse Osmosis (RO) can often appear the most complicated type of water treatment method to understand, or to select products for. Here at CPL Filtration we make it easier for you by explaining the process and technologies.
The difference between Reverse Osmosis and Osmosis
In order to remove the natural tendencies of water and salt movement and then force clean water to flow from salt water, the osmotic pressure must be reversed.
To reverse this flow of water the Membrane and Reverse Osmosis systems utilise a semi-permeable membrane element enclosed inside a pressure vessel. Pressure is then applied to reverse the flow of water of which the source is usually an existing pressurised line for smaller volumes or the addition of a pump for large installations. As pressure is applied to the feed stream, water molecules pass through the membrane, while salts are retained in the feed.
Using the principles of water and salt movement, and combining them with pressure and membrane technology, the natural osmotic flow is reversed
The spiral membrane is constructed of one or more membrane envelopes wound around a perforated central tube. The permeate passes through the membrane into the envelope and spirals inward to the central tube for collection
Visit the CPL Filtration Ltd website for more information on Reverse Osmosis