ABSTRACT
There are several types of filter presses available but the most common type consists of vertical plates that are held in a frame and are pressed together between a fixed and moving end.
A cloth filter medium is mounted on the face of each individual plate.
The press is closed and sludge is pumped into the press at pressures up to 225 psi and passes through feed holes in the trays along the length of the press.
Filter presses usually require a precoat material such as incinerator ash or diatomaceous earth to aid in solids retention on the cloth and to allow easier release of the cake.
