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METHOD FOR TREATING AQUEOUS SOLUTION BY DOUBLE FILTER MEMBRANE LAYER USING FINE GRANULAR ION EXCHANGE RESIN AND ION EXCHANGE FIBER
METHOD FOR TREATING AQUEOUS SOLUTION BY DOUBLE FILTER MEMBRANE LAYER USING FINE GRANULAR ION EXCHANGE RESIN AND ION EXCHANGE FIBER
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机译:细颗粒离子交换树脂和离子交换纤维处理双滤膜层水溶液的方法
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摘要
PURPOSE:To carry out stable water treatment over a long time and to obtain treated water with high purity, by stacking a filter membrane layer formed by entangling a cation exchange fiber and a fine granular ion exchange resin on a filter membrane layer comprising a fine granular cation.anion exchange resin. CONSTITUTION:Fine granular ion exchange resins A, C with particle size of 2- 250mum are mixed with water and the obtained mixture is precoated on a filter support 11 to form a filter membrane layer. On the other hand, a cation exchange fiber D of which thickness is 2-200mum and length is two times or more of the thickness and fine granular ion exchange resins A, C with particle size of 2-250mum are mixed in water to be entangled mutually and the rsulting mixture is further precoated on the previous filter membrane layer to obtain a double filter membrane layer. This filter layer hardly generates crack because has an integral tough structure ad contamination and clogging of a filter element are eliminated as well as high purity treated water is obtained.
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