Filter presses are one of the primary pieces of equipment used for sludge dewatering and various filtration processes.Operating principle is based on the pressurising of the sludge between filter plates, while the liquid phase passes through filter cloths and is discharged from the system.
Depending on user requirements, filter presses are available in manual, semi-automatic, fully automatic, and heated drying models. With solid content levels reaching 30–35%, filter presses provide one of the highest dewatering efficiencies among comparable technologies. For this reason, filter press is widely used not only for waste sludge dewatering but also as filtration equipment in various industrial processes.
Due to low investment and operating costs, ease of operation, and high performance, filter presses offer a broad range of applications.
Wastewater Treatment Plants
Sludge generated in wastewater treatment plants is dewatered using a filter press. This significantly facilitates sludge storage, transportation, and disposal while considerably reducing associated costs.
Concrete Batching Plants
Large volumes of water are used in concrete batching plants for vehicle and site washing operations. This wastewater can be filtered and recovered for reuse within the facility.
Due to its high treatment efficiency and operational simplicity, the filter press is a preferred solution for such applications. Another key advantage is its ability to dewater sludge containing aggregates and cement particles present in the water.
As a result, transportation and storage costs are reduced, and facilities operate in a cleaner and more sustainable manner.
Chemical Industry
Filter presses are used for filtration in the production processes of various chemical compounds such as sodium bisulfite, zinc sulfate, copper sulfate, and zinc oxide.
Acetylene Production Facilities
Lime sludge formed as a result of carbide neutralization is dewatered using a filter press. The resulting solid waste is safely stored and transported to disposal sites without environmental contamination.
Food and Biofuel Industry
In the filtration of cold-pressed vegetable oils, filter presses are used to achieve a clear and sediment-free product.
In biodiesel production, they ensure the removal of impurities from the oil, improving overall product quality.
Coal Washing Plants
Slurry generated during mining operations is first settled in a decanter, then dewatered using a filter press. The recovered water can be reused in the process, while the dewatered sludge is stored in a more stable solid form.
Metal and Jewelry Industry
Filtration of metal plating baths, recovery of precious metals from gypsum blasting wastewater in the jewelry sector, recovery of valuable metals from polishing and buffing residues are common usage of filter press.
Natural Stone and Ceramic Industry
Filtration of marble cutting wastewater, dewatering of slurry in ceramic and bentonite production, achieving the required consistency for shaping and processing are common usage of filter press.
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