Principles of filtration (continued )
Case 1: Constant Pressure-drop Filtration
differential mass of the cake
Substituting,
Assuming, incompressible cake (Const )
(pressure–drop) through cake
, where, total mass of cake.
upstream-pressure of filter–media Define, = property of cake Pressure–drop through filter medium hydraulic resistance of filter medium
differential mass of the cake 
) 
(pressure–drop) through cake 
, where, 
total mass of cake. 
upstream-pressure of filter–media
= property of cake
Pressure–drop through filter medium
hydraulic resistance of filter medium 
