ИССЛЕДОВАНИЕ ФИЛЬТРАЦИОННЫХ ХАРАКТЕРИСТИК КАРТРИДЖА ФИЛЬТРА ТОНКОЙ ОЧИСТКИ

Abstract

The results of investigations of the deposition of sand and silt particles from the core material of the filter element screened pipe. In particular, the change of the basic filtration properties - porosity and permeability of the filter element of the sample depending on the volume pumped through a contaminated fluid mechanical impurities. To assess changes in the filtration properties of the material investigated following modeling techniques : one-component model of suspension flow through porous media , modeling with the pollution front and evaluation correlation filter permeability on the amount pumped pollutant. Analysis of single-component model slurry flow through a porous medium showed the model can be implemented in the presence of empirical coefficients that take into account the porosity of deposits in the sediment pore space, linear functions describing the adsorption and desorption of precipitation on the pore walls and the functional dependence of the permeability of the filter and the viscosity of the suspension. Modeling the process of filling the filter mechanical impurities by using a model of the front assumes a linear dependence of pollution inversely proportional to the permeability of the filter depending on the accumulated sand pumping studies have shown that the process of mudding more complex and is not subject to a linear law. Thus, the results of theoretical studies have shown that the methods considered process modeling clogging of the filter : one-component model of suspension flow through a porous medium and a linear model of the pollution front does not adequately describe the experimental results . In this regard, a mathematical model is investigated on the basis of correlation and regression obtained universal dependence of permeability for polymer- fiber filter from the mass pumped through the surface of the sand , which allows to describe the experimental results with the reliability of the approximation R 2 = 0,9998.