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Chemical
02.
Mining
FILTER PRESS
Our Advantages in Filter Press
What is Filter Press?
An industrial 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 the low residual liquid in the solid is desired.
Filter Press Operation
- Cake filtration or cake-forming filtration is a mechanical process for the separation of solid-containing liquids. It pertains to surface filtration like cross-flow filtration. In contrast to depth filters, the actual separation effect does not take place through the filter medium but through a filter cake, which forms on the filter cloth. As one of the oldest filter units, the filter press is the most important and efficient process pressure filter. Especially when it comes to the highest level of filtration efficiency and maximum degree of dewatering of various filter media. Depending on the application, filtration with filter presses has different functions as a mechanical separation process:
o Purification of raw materials and products as well as separation of by-products
o Recycling of solvents and unreacted reactants
o Removal of impurities from wastewater
o Extraction of recyclable materials and raw material
Working Principle of a Filter Press
During discontinuous cake filtration with filter presses, the suspension to be filtered is pumped and concentrated via the turbidity inlet into the filter plate chambers. The driving force for the liquid transport is provided by a feed pump. The filter plates are lined with special filter cloths according to the respective application. These clothes retain the solids in layers during the flow. A layer of the solids to be separated accumulates over time. This layer is known as the filter cake, which remains in the plating chamber as a solid mass and makes a significant contribution to the filtration of the liquid.
The filtrate, which penetrates the filter cloths, is discharged along with a channel system via the filtrate drain introduced into the filter plates. As the layer to be flowed through grows, the flow-through resistance increases and with it the pressure loss, with a concomitant decrease in throughput and flow rate. The permeability of the cake decreases with compressible products. This leads to inefficient and uneconomically long filtration times. With periodic cake filtration, the filtration process is interrupted once a predetermined pressure has been reached. If necessary, the filter cake is squeeze-treated (membrane technology) and then removed by opening the filter press. After the optional cleaning of the filter cloth and closing of the unit, filtration starts again from the beginning.
Applications of a Filter Press
- 01
Chemicals
- 02
Mining & Minerals
- 03
Pharmaceuticals
- 04
Environment and waste water
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Food
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Iron ore
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Textile
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Effluent treatment plant
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Dyestuff
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Ceramic
Chemical
- The chemical and petrochemical industry places high demands on filtration systems and filter press architectures used with regard to chemical resistance and the relevant filtration parameters in order to achieve the highest possible end-product quality. As a result, durable, safe, and efficient technology solutions, as well as optimized and efficiently designed process parameters, are critical for chemical processing applications. N.M Patel offers comprehensive and sophisticated filter press technologies in the field of solid-liquid separation and customer-oriented solutions to improve production, efficiency, and end-product quality. Our chamber filter presses and membrane filter presses are the optimum solutions for the specific chemical properties at filtration temperatures of -10 °C to 95 °C due to their process-technical variability in close cooperation with renowned suppliers.
- They offer high filtration quality, high filtration rates, maximum washing efficiency, and a high degree of dewatering. As a major filter press manufacturer, we are committed to helping our customers maximize their success.
Mining
- N.M Patel filter presses are used in processing plants of the mining industry due to the positive aspect of the great process-technical flexibility among other things. The most frequent applications are the dewatering of fine coal and coal tailings (finest fractions) as well as the solid-liquid separation of the ore concentrate suspension concentrated by flotation and subsequently separated from mineral by-products. At this point, metals such as zinc, iron, and copper are extracted, but precious metals such as gold, silver, and platinum are also extracted in corresponding mines in the form of a puncture-proof filter cake. Membrane filter presses are preferably used here to achieve quantitatively high yields in cake washing and high dry matter contents by means of squeezing processing. They offer high filtration quality, high filtration rates, maximum washing efficiency, and a high degree of dewatering. As a major filter press manufacturer, we are committed to helping our customers maximize their success.
Food
- The food and beverage industry places high demands on filtration systems and filter press architectures, optimum washing results, and uniform cake structure. The aim is to achieve the highest possible end-product quality, regardless of the working temperature. As a result, durable and sound technology solutions, as well as optimized and efficiently designed process parameters, are critical.
- As a major filter press manufacturer, we are committed to helping our customers maximize their success corresponding to our aims. We ensure this through service, a broad range, our own test and pilot facilities, quality, and speed of our service range. Our highly motivated, technically trained staff is also a guarantor for the development and production of innovative, market-driven products with consistently high quality with our solid experience of 50 years.
Environment
- Due to the high degree of dewatering requirements and the high filtration quality, filter presses with specific membrane filter plates (membrane filter presses) are preferably used as mechanical solid/liquid separation units in the field of water and wastewater treatment. The filter cake formed after filtration must have the highest possible dry matter content (DM content) due to the final disposal. This reduces the associated follow-up costs for disposal to a minimum. Based on our 40 years of process competence,
- N.M Patel offers a wide range of filter press technologies – tailored to your specific needs. This includes the fields of municipal and industrial wastewater, drinking water, groundwater, and organic waste treatment as well as sludge recycling. Our chamber filter presses and membrane filter presses are the optimal solutions for your individual application due to their process variability and the wastewater filter plate and filter cloth technology. our aim with our products is to provide a far-reaching answer for the protection of the environment. Our mission is always to convert wastewater into pure water and sludge into resources. In this way, we leave our descendants with clean water and a clean environment.
