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Post by belkin909 on Jun 10, 2011 10:22:39 GMT -5
Ultrafiltration is a method of removing very small particles from liquid. A membrane used with this method usually has pores that are 0.01 to 0.001 microns in size. This is small enough to remove most bacteria, viruses, high molecular weight substances, and polymer-type molecules. During ultrafiltration the flow of liquid gets split into two streams, which is known as cross-flow separation.
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Post by hayaat909 on Jun 21, 2011 5:57:28 GMT -5
Efficiency of ultrafiltration systems is affected by the flow of the liquid over the surface of the filter membrane. The higher the velocity of the liquid, the higher the rate of permeation, but higher flow rates can increase the energy consumption of the system. This leaves designers to consider acceptable energy usage versus an optimal rate for the application.
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Post by deliveryboy07 on Jun 23, 2011 8:20:22 GMT -5
The process is commonly used for treating drinking water in compliance with strict standards. Many organisms have become resistant to other methods of disinfecting water, but an ultrafiltration system removes pathogens by moving water through a membrane, physically removing each organism. The membranes themselves are often formed into small, hollow fibers that are less than a millimeter (about 0.04 inches) in diameter, which are bundled by the thousands in a filter housing. Modules that contain the membranes come in a variety of configurations, including spiral-wound, plate-and-frame, and tubular.
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