Seawater Desalination RO Membranes
This is a simplified explanation of RO membranes and the RO process, meant for the layperson. For an in-depth detailed description from an industrial perspective, please visit our Reverse Osmosis webpage.
There are various methods of water purification, but reverse osmosis is one of the most economical and effective methods used in industrial applications today. Reverse Osmosis (RO) is water purification method that uses the basic osmosis principle. Water molecules are forced through semi-permeable membranes to filter out impurities, and all contaminants are flushed away, leaving only the pure usable water.
This process is accomplished through the following three stages:
The most important part of any RO system are the membranes. In a typical RO system, membranes are made of two- to eight-inch diameter sized, spiral wound sheets of semi-permeable material designed to let pure water flow through, while keeping back all other impurities. Within industrial applications, the standard length of each membrane has been set to forty inches. These membranes, typically six at a time, are loaded into single housings, which are then arranged into several parallel flow streams, or stages. Typically, reverse osmosis systems contain multiple stages in a single series, as explained above. The more stages, the less water is wasted as each stage reclaims some of the wastewater from the previous stage.
Using pressure and force (typically from a pumping system), the natural process of osmosis is reversed via feed water being pushed through the semi-permeable membranes, overcoming the natural process of osmosis, and leaving the impurities behind, while the filtered water continues through the system. Once this has been achieved, the highly purified water can be reused for a plethora of other purposes, while the “rejected” impurities are flushed to drain or are recycled for cooling water or other potential uses.
For the best RO membranes, you can actually purchase them right here at our website. Click here: RO Membranes
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