The filter press itself is a mechanical dewatering equipment for solid-liquid separation. There are two categories: box filter press and diaphragm filter press.

Diaphragm filter press is widely used in industries with difficult dehydration and high final solid content because it can extrude mud cake twice and greatly improve the solid content of mud cake.

So the same is true of diaphragm filter press used in sewage treatment industry. Generally, the mud cake after pressure filtration and dehydration contains solids, which can reach more than 40% of the national requirements. However, in all dehydration equipment, the energy consumption is the least.