Mumbai university > Civil > SEM 8 > Industrial Waste Treatment

Marks: 5M

Year: May 2015,

• A filter press is a tool used in separation processes, specifically in solid/liquid separation using the principle of pressure drive, provided by slurry pump.

• The filter press is used in fixed volume and batch operations, which means that the operation must be stopped to discharge the filter cake before the next batch can be started.

• The major components of filter press are the skeleton and the filter pack. The skeleton holds the filter pack together while pressure is being developed inside the filtration chamber. The chamber however can only hold a specific volume of solids.

• There are three main basic types of filter presses: plate and frame presses, recessed plate and frame filter presses and automatic filter presses.

• The selection of filter press type depends on the value of liquid phase or the solid phase. If extracting liquid phase is desired, then filter press is among the most appropriate methods to be used.

• Nowadays, filter plates are made from polymers or steel coated with polymer.

• They give good drainage surface for filter cloths. The plate sizes are ranged from 10 by 10 cm to 2.4 by 2.4 m and 0.3 to 20cm for the frame thickness.