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Reverse Osmosis :: Aquaflow Water Treatment Systems Ltd |
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Information about our range of Reverse Osmosis systems Reverse Osmosis is a process that is often described as crossflow filtration and is used to remove a wide range of salts to give water of high purity. Osmosis is a natural process involving fluid flow across a semi-permeable membrane barrier. If a solution of salts in water is separated from a source of pure water by a semi-permeable membrane, the tendency of the pure water is to pass through the membrane to try to dilute the salt solution. This process can be reversed by applying a pressure to the salt solution which forces pure water through the membrane, thereby concentrating the salt solution. This effect is utilised in a Reverse Osmosis plant to allow water containing a high level of natural salts to be purified without the need for chemical regenerants and the inherent impilcations of handling hazardous substances. Additionally, the plant does not need to be taken out of service to regenerate as a demin plant would, ensuring continuous water availability. The rejection rate of contaminants from the water is generally in the region of 90 to 99.5% depending upon the type of membrane used and water to be treated. This means that a typical mains water supply of around 500 to 700 micro-siemens conductivity, when passed through a Reverse Osmosis plant will give water of a conductivity of around 10 micro-siemens. Greater purity can be achieved with a final “polishing” of the water if required. If you have any questions please contact us. |
