FILTERING MATERIALS AND OPERATING PARAMETERS OF WATER PURIFIERS

The paper describes the widespread types of filtering materials and their specifications. It is shown that a filtering material is characterized by a number of parameters influencing both operating parameters of filtering systems and the efficiency of conditioned natural water purification. Changing these parameters, it is possible to predetermine the operating parameters of filtering systems and the quality of purified water. At a design stage of filtering systems it is necessary to determine the effective parameters of the filtering material, such as the height of the working layer, fineness and heterogeneity of fractions, and filtration rate to achieve the high quality purified water. It is shown that the finer fraction of the filtering material allows to increase the filtration rate preserving the quality of obtained water and, respectively, the productivity of filtering systems due to the increased specific surface of grains despite the increase in the load resistance and pressure losses.

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