Plate and frame filter press is a mature dewatering equipment, which is widely used in sludge dewatering projects in Europe and America. The filter press arranges filter plates and filter frames with filtrate passages in parallel and alternately, with filter cloth sandwiched between each group of filter plates and filter frames. The filter plates and filter frames are compressed with a clamping end to form a filter press chamber between them. Sludge flows in from the feed inlet, water is discharged from the filtrate outlet through the filter plate, and the sludge cake accumulates on the filter cloth inside the frame. After the filter plate and frame are released, the sludge cake is easily peeled off, which has the advantages of simple operation, high solid content of the filter cake, and strong applicability.

As a solid-liquid separation equipment, the filter press has a long history of application in industrial production. It has good separation effect and wide adaptability, especially for the separation of viscous and fine materials, and has its unique advantages.

Filter presses are divided into plate and frame filter presses and box filter presses. Filter presses are intermittent filtration equipment used for solid-liquid separation of various suspensions. It relies on a compression device to compress the filter plate, and then pumps the suspension into the filter chamber through a filter cloth to achieve the separation of solid particles and liquid particles.

Plate and frame filter press is a mature dewatering equipment, widely used in early sludge dewatering projects in Europe and America. The structure of plate and frame filter press is relatively simple, easy to operate, stable, flexible in the selection range of filtration area, occupies less space per unit filtration area, has a large filtration driving force, low moisture content of the obtained filter cake, strong adaptability to materials, and is suitable for various types of sludge.

The advantages of plate and frame filter press are: simple structure, easy operation, stable operation, and convenient maintenance; Flexible selection range of filtration area, occupying less space; Strong adaptability to materials, suitable for various small and medium-sized sludge dewatering treatment scenarios.