[Las Palmas de Gran Canaria] Asociación Ibérica de Filtración y Separación
TARLETON, E.S., 1998. The control of pressure in constant rate cake filtration. IN: Macias Machin, A. and Estevez, A. (eds.). International Symposium on Filtration and Separation, Universidad de Las Palmas de Gran Canaria, Las Palmas, February 19-20.
The widespread reliance on heuristics for the design and specification of particle/fluid separation
devices has prompted a new approach to pressure filtration incorporating the principles of
mechatronics. A unique experimental apparatus is described and used to obtained filtration data
for aqueous mineral suspensions forming either incompressible or moderately compressible filter
cakes. Data for constant flow filtrations are presented where the air pressure within the filter is
controlled through flow & pressure transducers and an electronically adjusted pressure regulator.
Their combination allowed filtrations performed under different pressure/flow regimes to be
compared. It is shown how scale-up data obtained from constant pressure filtrations can produce
erroneous predictions of constant rate filtration behaviour, particularly as cake compressibility