FILTERING MATERIAL AND METHOD FOR THE PRODUCTION THEREOF, A FILTER AND FILTERING METHOD

The invention relates to producing filtering materials for cleaning and disinfecting water, water solutions and other liquids and for carrying out a sterilising filtration of injection and other solutions, for concentrating biomolecules in physiological liquids, concentrating and extracting viruses and for preparing apyrogenic water in biocatalytic membrane reactors. The aim of said invention is to develop a novel filtering material which exhibits high-absorbing properties, a highly efficient retention of a submicron electronegative particles, microorganisms, submicron nonpolar particles and chemical impurities and which has a low hydrodynamic resistance. The inventive filtering material comprises a base in the form of a non-woven organic synthetic polymer fabric modified by aluminium oxide hydrate particles which are fixed to the surfaces of the base fibres for improving the absorbing properties thereof and providing it with an electric charge. The filtering material production method is carried out by applying a modifying agent, which is embodied in the form of an organic synthetic polymer fabric, to the fibre base, wherein said modifying agent comprises particles of aluminium-based material whose hydrolysis generates the formation of aluminium oxide hydrate particles on the base fibres and enables said particles to be fixed thereto. A method for filtering liquid medium is carried out by means of the filtering material which is embodied in the form of a non-woven organic synthetic polymer fabric provided with the aluminium oxide hydrate particles fixed to the fibres thereof. L'invention appartient au domaine de la fabrication de matériaux filtrants destinés au nettoyage et à la désinfection d'eau, de solutions aqueuses et d'autres liquides ainsi qu'au filtrage par stérilisation des solutions d'injection ou autres, la concentration de molécules biologiques dans des liquides physiologiques, la concentration et l'extraction de virus, la préparation d'eau apyrogène ou utilisant des réacteurs membranaires biocatalytiques. L'invention permet de résoudre le problème de création d'un nouveau matériau filtrant possédant des propriétés de sorption élevées, une efficacité élevée de rétention des particules électronégatives, de micro-organismes, de particules non polaires submicroniques et d'impuretés chimiques; en même temps, ce matériau possède une résistance hydrodynamique peu élevée. Le matériau filtrant comprend en tant que base un tissu non tissé polymère modi