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a) Discuss the theoretical principles of constant pressure filtration relating it to plate and frame filtration
b) Give the industry application of this type of filter
c) Calculate the specific resistance of the cake (α) and the resistance of the filter medium (Rm) on the basis of the following experimental data for a constant pressure filtration of a suspension of incompressible solids of concentration 30 kg/m3 on a filter medium of area 1 m2 . The pressure drop was 2 bar. The viscosity of the filtrate (η) is 1.1 x 10-3 kg/m/s.
Vol of filtrate V (m3 ) Time t(s)
2.0x10-3 23
4.0 60
6.0 114
8.0 184
10.0 270