Ultrafiltration water treatment manufacturers

R.O. systems utilizing externally wound tubular membrane element in modular assemblies have been used in the desalination of brackish and sea waters, the treatment and/or concentration of industrial waste waters, the separation/concentration of fluid food, pharmaceuticals and chemical solutions, and the manufacture of water purifiers for domestic use. Generally, externally wound tubular membrane systems have been found to be highly suitable for ultrafiltration applications in the processing Industry and in water pollution control applications. 

Although ultrafiltration can easily control resist-bath conductivity, any small water-soluble molecule is allowed to pass through the membrane, including solvent, which constitutes an environmental/waste treatment problem. Many ED resists have been formulated to include water-soluble solvents, and maintaining bath solvent level therefore requires periodic analysis and addition of fresh solvents. (This is not the case with resists that have been ultrafiltered during manufacture to remove water-soluble solvent (section 2.4.10).)... 

To convey a sense of what nephrons are able to accomplish, we make a comparison in Table 8.10 of the characteristics and performance of the glomeruli with those of an industrial ultrafiltration process (e.g., the treatment of whey, a by-product of cheese manufacture). In both cases, water and solutes pass through the membrane wall — salts, glucose, toxins, and some small proteins in the glomerulus, lactose in the case of whey. 

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