RESEARCHES OF CHANGES OF THE COEFFICIENT OF A FILTRATION OF THE POROUS MEDIA AT THE DIFFERENT TYPES OF FORMATION OF A DEPOSIT. THE THEORETICAL ANALISIS AND PRACTICAL RECOMMENDATIONS FOR CALCULATIONS OF CLEARING FILTERS

Abstract

On the basis of analogy betweem the laminar flow of a viscous liquid in a tube and a filtration in the porous media which submits to the linear law of resistance Dar-cy the formula for calculation of coefficient of a filtration at the combined form of adjournment of a deposit is obtained. Practical recommendations for a choiсе of theoretical and approximating experimental dependences for different types of formation of a deposit are given. Theoretical and applied studies of filtration of heterogeneous ridins in porous mediums with changing powers took away significant development in connection with solutions to the problems of water purification in the form of finely dispersed mineral and columnar particles and speeches. Changes in the power of porous media are observed in the history of various mechanical, physical-chemical and biological processes of mass transfer which are visible on the surface of the particles of the middle (surfase – the slurry type of the settlements of the siege after adsorption), or without the middle in the port channels (volume – the dispersed type of the settlement of the siege). With accumulated siege (the process of colmatation), a change in porosity and filtration coefficient is observed, and with inflows (the process of suffocation) – an increase in these important parameters of the porous medium. When filtering rich-phase and rich components sieges, it can be settled in a mixed (complex) form, like in plivkovy so in general. In case of filfiltration of rich-phase and rich-component native sediments, it can be settled in mixed (complex) forms – like in smelt, and in general forms. The type of the process of the siege of creation and indicated on the basis of laboratory data. To lie in the nursery area on the surface of the particles of interest, adhesive and sorption power of the particles of the medium, according to the type of encroachment, district, temperature and other char-acteristics of the porous medium and pore waters.