In the modern society a great amount of food, water, fuel etc. flows into human dwellings from outer environmental and in the form of waste is discarded to the outer environmental again. Among these substances water is consumed in largest amount in cities. The modern period based upon the rapid volume transportation with a large scale simple production way is about to be ended by environmental restrictions. It can be concluded, that all water systems are now in crisis. To purify waste water and to preserve water sources from protein contaminations the membrane technologies obtained a wide spreading. Many years ago the development of technical membrane processes have been originated: microfiltration has been used in Germany (1920) for bacteria separation, since 1950 (Netherlands) hemodialysis is used as an artificial kidney and since 1960 (USA) ultrafiltration is used to concentrate macromolecules, including proteins. Main industrial applications of membrane technologies are dairy (milk, whey, cheese making), foods (potato starch and proteins), meat working up, and Pharmaceuticals (enzymes, antibiotics, pyrogens). However, membrane performance changes very much with time resulting in a considerable decrease in the flux through the membrane in consequence of a pore-blocking, adsorption on membrane walls, formation of a gel layer and concentration polarization. The large decline effect is known as membrane fouling: an irreversible deposition (adsorption) of retained particles, colloids, macromolecules, etc. on or in the membrane. It is clear, that the development of new various approaches has to be useful.
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