Reverse Osmosis Equipment.

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    Reverse osmosis (RO) is one of the most effective processes for providing a consistent supply of high purity water in healthcare applications.

    Typically, an RO system works by feeding a conventional mains supply under pressure into a module containing a semi-permeable membrane. The membrane removes a high proportion of impurities, including up to 98% of inorganic ions, together with virtually all colloids, micro-organisms, endotoxins and macromolecules, with almost 70% of the feed-water passing through the membrane as a purified permeate, with impurities being removed in a residual concentrate stream that is run to drain.

    RO systems generally include a pre-treatment package designed to meet the characteristics of the feed-water. Typically, this equipment includes a base-exchange softener to remove hardness that would otherwise scale the membranes. Further protection being provided by passing the water through activated carbon filters, to remove free chlorine and organic contaminants, with any remaining particulates being removed by a fine filter before the pre-treated water enters the RO plant.

    For applications that require even higher purity water, such as Heamodiafiltration, it is normal to use double pass reverse osmosis. This involves processing the permeate through two sets of membrane filters, but produces water that has extremely low levels of endotoxins and bacteria.

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  • How does it work?
    The fundamental principle of Reverse Osmosis membrane technology is the use of pressure to separate soluble ions from water through a semi-permeable material. The membrane is usually a thin film composite material and is manufactured in a spiral configuration as opposed to a flat sheet or tube geometry. The predominant model used today for industrial applications is the spiral configuration.