FILTERING MATERIAL Russian patent published in 2007 - IPC B01D39/06 B01J20/08 

FIELD: environmental protection; production of the filtering materials.

SUBSTANCE: the invention is pertaining to water treatment, to be exact -to the means for purification of water from fluorides. The material produced according to the invention may be used for purification of the drinking water from the water pipelines and the freshwater springs. The filtering material contains the product of the dynamic interaction - the activated alumina with the water solution of aluminum sulfate and additionally the target additive expanding the filterability of the material and ensuring adjustment of рН of the filtrate up to the values allowing to use the filtrate for a drinking without additional purification. As the target additive may be used: the activated charcoal; the mixture of dolomite with the cation-exchange resin; the mixture of the cation-exchange resin and the anion-exchange resin in the carbonate form. The technical result of the invention consists in the extension of the filterability of the filtering material, simplification of the process of purification of the water containing fluoride-ions, reduction of its net cost.

EFFECT: the invention ensures the extension of the filtering material filterability, simplification of the process of purification of the water containing fluoride-ions, reduction of such a water net cost.

5 cl, 9 tbl, 9 ex