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   Many membrane separation processes are based on a different principle or mechanism of separation, the substance may be separated from the particles until the molecule. Despite such a big difference, but all have one thing in common membrane processes that need to be applied to the film.
   Membrane separation process for the separation medium is a membrane, on both sides of the membrane in the presence of a driving force (eg: pressure difference, concentration difference, potential poor), the liquid component of the raw material selectively permeable membrane, to achieve the separation, purification The purpose of.
   Liquid membrane separation process mainly refers to microfiltration, ultrafiltration, nanofiltration and reverse osmosis process. The pressure pushes the membrane separation process can be used to purify the solution, extraction, separation and concentration. From microfiltration, ultrafiltration, nanofiltration and reverse osmosis, the size of the separated molecules or particles become smaller and smaller, and therefore must increasingly smaller pore size, which also means an increase in mass transfer resistance touch, so the operation pressure is also gradually increasing to achieve similar flux.
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