A filter press is a piece of equipment specifically designed for solid-liquid separation. In sewage treatment, it is used for the same purpose. There are many types of wastewater, but no matter what the type, what the filter press can ultimately separate, must be solids and liquids. For those solutions, the separation can only be achieved after using adsorption, or chemical reactions to produce solids. Moreover, the smallest particles that can be separated by the filter press itself can generally only be about 2MM.
Interpreting the role of filter press
The filter press is a mechanical dewatering equipment with low energy consumption, low dosing, high separation efficiency and high solids content of mud cake, which seems to be not continuous work, but in fact the processing capacity is not small. Sewage treatment filter press has greatly improved the pollution of sewage to the environment in the present production, and the sewage treatment filter press is easy to operate. Here is a look at the role of sewage treatment filter presses.
Sludge in treatment can be divided into two processes: sludge dewatering and sludge drying, and different types of filter presses have their own advantages. A large amount of sludge is produced after sewage sedimentation treatment, even after concentration and digestion, the water content is still as high as 96%, which is very large and difficult to be disposed of by consumption, and must be dewatered to increase the solids content of the sludge cake to reduce the floor space of the sludge pile.
Plate and frame type & belt type
The belt filter press is less affected by the fluctuation of sludge load, and also has the characteristics of lower water content of the mud output and less stable working start-up consumption, relatively simple management control, and less requirement for the quality of operating personnel. At the same time, since the belt filter press dewatering machine entered the country earlier, a considerable number of manufacturers can produce this equipment.
In the sewage treatment project construction decision, you can choose the belt filter press to reduce the project investment. At present, most of the new domestic sewage treatment plants use belt filter presses. Compared with other types of dewatering machines, plate and frame filter presses have the highest solids content of mud cake, up to 35%. If the factor of reducing the area occupied by sludge piles is considered, the plate and frame filter presses should be the preferred solution.
The movement of the filter plate requires that the operation can be done by hydraulic start device, by fully automatic or semi-automatic, and the filter cloth oscillation device to make the filter cake easy to fall off. For the filter press, the main indicators to measure its filtration quality are the water content of the filter cake and the interception rate of the filter cloth. The lower the water content of the filter cake, the better the quality of the filter press. When enterprises use filter presses, they can decide the water content of the filter cake according to their production requirements, as long as it meets their production requirements, it is a good filter press.
Advantages of filter presses
Advantages of belt filter press
The belt filter press can handle sludge that cannot be handled by other filter presses. Less energy consumption, less floor space, stable operation and long service life. The belt filter press can operate continuously.
Advantages of plate and frame filter press.
The plate and frame filter press has a simpler structure, easy operation, flexible filtering area selection range, less land area per unit filtering area, high filtration propulsion force, low water content of the resulting filter cake, and strong adaptability to materials.