Plate And Frame Filter Press | YASA ET


YASA ET industrial plate and frame filter press is a tool used in separation processes, specifically to separate solids and liquids. The machine stacks many filter elements and allows the filter to be easily opened to remove the filtered solids, and allows easy cleaning or replacement of the filter media.


Filter presses cannot be operated in a continuous process but can offer very high performance, particularly when low residual liquid in the solid is desired. Among other uses, filter presses are utilised in marble factories in order to separate water from mud in order to reuse the water during the marble cutting process.



Plate And Frame Filter Press Structure


This type of filter press consists of many alternating plates and frames assembled with the supports of a pair of rails, with filter membranes inserted between each plate-frame pair.

  • Plates provide support to the filter membranes under pressure, and have narrow slots to allow the filtrate to flow through the membrane into the plate, then out into a collection system.

  • Frames provide a chamber between the membranes and plates into which the slurry is pumped and the filter cake accumulates.



Plate And Frame Filter Press Working Principle


The filter press mechanism is composed of a filter plate, a filter frame, a filter cloth, and a squeeze diaphragm.


The two sides of the filter plate are covered by filter cloth. When a squeeze diaphragm is required, a set of filter plates is composed of a diaphragm plate and a side plate. Both sides of the base plate of the diaphragm plate are covered with rubber diaphragms, and the outside of the diaphragm is covered with filter cloth.


The side plates are ordinary filter plates. The material enters the filter chambers from the material holes on the thrust plate. The solid particles are trapped in the filter chambers because their particle size is larger than the pore size of the filter medium (filter cloth), and the filtrate flows out from the outlet holes under the filter plate.


When the filter cake needs to be squeezed dry, in addition to squeezing with a diaphragm, compressed air or steam can also be used to pass in from the washing port, and the airflow can flush the water in the filter cake to reduce the moisture content of the filter cake.


The stack is compressed with sufficient force to provide a liquid-tight seal between each plate and frame, the filter membrane may have an integrated seal around the edge or the filter material itself may act as a gasket when compressed.


As the waste liquid is pumped through the membranes, the filter cake accumulates and becomes thicker. The filter resistance increases as well, and the process is stopped when the pressure differential reaches a point where the plates are considered full enough.



YASA ET Plate And Frame Filter Press Applications


Filter presses are used in a huge variety of different applications, from dewatering of mineral mining slurries to blood plasma purification. At the same time, filter press technology is widely established for ultrafine coal dewatering as well as filtrate recovery in coal preparation plants.


Other industrial uses for automatic membrane filter presses include municipal waste sludge dewatering, ready mix concrete water recovery, metal concentrate recovery, and large-scale fly ash pond dewatering.


Many specialized applications are associated with different types of filter press that are currently used in various industries. For instance, plate filter press is extensively used in sugaring operations such as the production of maple syrup in Canada, since it offers very high efficiency and reliability.


 

YASA ET filter presses are currently used by many factories for sludge dewatering in the wastewater treatment field.


Our filter presses are currently used with our PREDEST Electrocoagulation Equipment for dewatering the sludge formed during the treatment process.


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Sources:

Filter press - Wikipedia

Visual Encyclopedia of Chemical Engineering (umich.edu)