In a Membrane Press Filter, a cake is formed which can usually be washed and possibly gas blown.
The cake is then compressed, often using a pneumatic or hydraulic pressure behind a rubber diaphragm.
They are more expensive than filter of the same size but they produce a drier cake due to the cake compression.
Cake discharge is better so membrane presses are always automated which can leave to short discharge times. Membrane compression presses can have horizontal or vertical filtering surfaces.