Filtrodynamics 2: Effects of Particle Size and Filter Type on Trans-Filter Time-Dependent Pressure Signals
作者： Marie Dufrechou , Emmanuel Mignard , Michael F. Drenski , Wayne F. Reed
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摘要: Filtrodynamic behavior of trans-filter time-dependent pressure signals DP(t) is determined for membrane and frit filters using latex spheres varying diameter D. Membrane data are best interpreted via a time-dependent, accreting filtration bed, based on Darcy’s law. A single parameter, permeability k, describes each membrane/particle pair. For small particles, k increases with increasing D, then becomes D-independentforlargeones.Predictablebehavior polydisperse mixtures obtained. The mechanism non-membrane metallic frits dramatically different, better described by previous ‘‘characteristic loading’’ model. Use in series allowed monitoring filter’s separate response to particle accumulation.
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