A probabilistic-statistical model of change in particle size distribution in fine filters

A.N. Grechushkin*, V.A. Lvov, Bauman Moscow State Technical University, Russia

Fine filters are widely used to remove dispersed contaminants in liquid purification systems. In some cases, it is not enough to calculate change in the mass concentration of contaminants, it is also necessary to know the change in particle size distribution of the dispersed phase, as well as to determine the rated filter fineness. The change in the mass concentration of the dispersed phase during filtration can be calculated with the sufficient reliability using empirical methods. In the same time, the change in the particle size distribution is often evaluated based on the operating experience with similar equipment. In practice it can lead to significant errors and sometimes to emergency situations.

The filtration of suspension is a continuous dynamic process that includes retaining particles in pores and carrying away the particles retained previously by flow hydrodynamic forces. Moreover, the influence of the latter increases as the pores are clogged with dispersed phase particles. When adhesion and cohesion forces have the same values, the membrane layer stops to retain particles of the dispersed phase. The change in concentration of dispersed phase particles can be represented as the transition of particles from...

Session: L8 - Short Oral Presentations
Day: 23 October 2019
Time: 14:45 - 16:00 h

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