Filter Press

Flexible filter press wastewater treatment systems with outstanding performance & integrated reject handling

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Liqtech Filter Press Sludge Dewatering

Filter Press Technology for Solid & Liquid Separation.

The LiqTech filter press represents a durable and reliable industrial tool, ideal for water sludge treatment for municipal and industrial use.

Worldwide, filter press technology is acknowledged as one of the most efficient and cost-effective methods to separate solid and liquid. A filter press machine can be utilized for water and wastewater treatment in various applications and processes. It facilitates separation processes of solid and liquid by delivering extremely high cake dryness.

LiqTech Water offers a filter press for complete solid and liquid separation. Many industrial processes generate wastewater or sludge, and there are several benefits linked to separate solid from liquid with a filter press for sludge dewatering.

A filter press can produce filter cakes of up to 80 % dryness, which, ultimately, leads to the significantly reduced weight of waste products. By reducing the weight of wasteful byproducts, effluent levies and disposal costs can be reduced significantly. This directly affects the profitability of an operation, making it more competitive.

Moreover, wastewater or sludge may also contain valuable, unexploited resources, which can be utilized for process optimization. By utilizing a filter press, potential valuable resources can be separated for further reuse or processing. For instance, wastewater can be reclaimed to be reused for other industrial processes or sold for irrigation. This can both lead to significant cost savings as well as help close the water scarcity gap.

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Features & Benefits

Benefits of our solution

Filter press with outstanding performance

  • Optional built-in reject handling
  • Customizable height & capacity
  • Can be integrated into PLC automated water treatment solutions
  • Simple & flexible design
  • Long lifetime & low maintenance
  • Easily upgradable in terms of filtration area
  • High operating availability & safety

Main Industries and Applications

Ideal for harsh applications

  • Industrial wastewater
  • Municipal wastewater
  • Chemical industry
  • Metallurgic industry
  • Food-processing industry
  • Pharmaceutical industry
  • Many others

Technical Data

Technical data
Frame size 630 x 630 mm / 24.8 x 24.8 inches
Number of filter plates 10 - 60
Filter surface 0.56 m² / 6 ft² per filter plate
Press volume 7 L / 1.85 gal per filter plate
Filtration pressure Up to 16 / 232 psi bar, typically 10 bar / 145 psi
Design pressure 16 bar / 232 psi


Number of plates Dimensions (L x W x H) Weight incl. reject tank Weight excl. reject tank
10 2414 x 1121 x1745 mm 1235 kg 1145 kg
20 2964 x 1121 x1745 mm 1400 kg 1310 kg
30 3514 x 1121 x1745 mm 1565 kg 1475 kg
40 4064 x 1121 x1745 mm 1730 kg 1640 kg
50 4614 x 1121 x1745 mm 1895 kg 1805 kg
60 5164 x 1121 x1745 mm 2060 kg 1970 kg

Reject Handling

It is optional to have integrated reject handling.

The integrated reject module transfer reject water to the desired holding tank or other locations above or away from the installation site. This functionality is designed to be included in the footprint of the filter press. Still, it can also be added after the installation if the requirement arises.



Accessories & Spare Parts

If you need any accessories or spare parts, we are ready to assist you.

LiqTech Water supplies a wide range of accessories and spare parts for our filter presses. With LiqTech Water’s accessories, you will achieve high performance and versatility. Based on more than 20 years in the filtration industry, LiqTech’s team of highly skilled engineers and process specialists will customize its range of accessories for your needs and requirements to enhance production and efficiency.

Our accessories include:

  • Filter cloths
  • Filter plates
  • Others

Please do not hesitate to contact us for further information.

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Reliable Filter Press For Sludge Dewatering

A Durable and Reliable Solution

LiqTech Water is a filter press machine manufacturer with more than 20 years of experience in the filtration industry. We have developed a durable and reliable filter press for sludge dewatering. Our separation technology is an automated solution that delivers up to 80 % dry matter.

LiqTech Water’s separation solution produces high cake dryness of up to 80 % at reduced processing times. The solution is suitable for process media where high throughputs are required and good access for handling is necessary. It is a simple solution, which is easy to operate and maintain.

Moreover, the sludge dewatering system is an automated solution aided by a feed pump that generates pressure filtration. Thus, by employing a filter press for wastewater dewatering, you may also reduce the man-hours used on wastewater handling.

Sludge Dewatering Technology

Sludge Dewatering Technology

LiqTech Water’s filter press for sludge dewatering is designed as a simple and flexible solution, making it applicable for various industrial tasks in several industries. Moreover, the whole system is made of strong and durable materials to ensure an enhanced solution with a long lifetime.

The filter press is made with a solid steel frame to ensure a strong and long-lasting framework. It is a simple system designed as a compact solution. It can be designed as a customized solution to match your specific separation needs.

A feed pump generates a pressure, which will send the sludge to be treated into the filter press. The pressure will push the filter plates towards the end-plate, forming a tight seal. The filter press then dewaters the sludge and delivers filter cakes of up to 80 % dry matter, depending on the pressure and application. The liquid will permeate the filter press filters, called filter cloths, attached to the filter plates, while solid will be retained. This will make the solid build up as thick layers on the filter press filters. The thicker the solid layer gets, the better it will retain smaller particles and solids, enabling an even more thorough separation process. The pressure from the feed pump will increase as the filter cake builds. Several drip trays are installed to collect wastewater, sludge, and filter cake debris dripping from the filter plates. Once the pressure reaches a set value, the filter press must be emptied. The set pressure highly depends on the application. The filter press machine can easily be opened in two stages to remove the filtered solids and for easy cleaning or replacement of filter press filters. Once it is opened, the dry cakes of dried solids drop to a tray. The dried solids can either be discharged to a significantly reduced price, reused, or sold for reuse.  

The LiqTech filter press for wastewater dewatering is made of strong and durable materials to ensure an application applicable for harsh environments with a long lifetime. It can withstand heavy-handed treatment required by many industrial processes and operations.

Operational Advantages

A filter press wastewater treatment system can bring about significant benefits to municipal or industrial operations. Among others, the LiqTech wastewater treatment advantages are:

  • Reduced sludge handling costs
  • Optimized resource management
  • Reliable performance
  • Easy operation
  • Low maintenance
  • High operating availability and safety
  • Long lifetime
Water Treatment Filtration Experts

Filtration Experts

LiqTech Water is a filter press manufacturer with more than 20 years of experience in the filtration industry. We have thoroughly developed and designed a filter press for sludge dewatering, which comes with excellent and reliable performance to separate solids and liquids, delivering enhanced production and efficiency. We always strive to develop innovative filtration solutions to meet complex demands. Our highly skilled engineers and process specialists are ready to assist you with recommendations on how your operation can benefit from having a filter press for sludge dewatering.

A Market-Proven Solution

LiqTech Water is an industrial filter press manufacturer with more than two decades in the filtration industry. We have delivered customized separation solutions for various industries and applications.

We have a market-proven solution, which has been used to treat various types of water and wastewater. The LiqTech filter press is used by several industry leaders, known for their high standards and requirements for reliable and long-lasting production equipment. LiqTech Water has worked with various tasks for various industries, including:

  • Food and beverage processing
  • Pharmaceutical processing
  • Industrial wastewater
  • Municipal wastewater
  • Marine scrubber water treatment
  • Chemical industry
  • Metallurgic industry

As we have worked with many diverse industries, we know how to separate various types of water and wastewater to obtain the best and most cost-effective results. Moreover, the required filter press filter may vary from industry to industry and task to task. At LiqTech, we know which filter press filters deliver the best separation results for various industries and applications.  

Customized Filter Press Technology

Customized Technology

A solid and liquid separation process may require customized solutions to obtain the best dewatering results. At LiqTech Water, we design your filter press wastewater treatment system based on the type of sludge and volume to be treated. We can, among others, customize your solution in terms of the number of filter plates and dimensions. The filter press can be installed with 10-60 filter plates. Each filter plate has a filter surface area of 0.56 m2 and a press volume of 7 liters. Our filter press machines can be built in various sizes, making them applicable for several applications in various industries. Likewise, we offer many types of filter cloths, depending on your type of water or wastewater to be treated. Some types of wastewater or sludge may require a thick filter press filter, while other types may require a thinner filter press filter.

At LiqTech Water, we are always ready to assist you with a customized solution, matching your specific separation needs. Our filtration experts are ready to provide recommendations on how a sludge dewatering unit can optimize your operation and whether any special features or accessories should be added to your filter press technology.

Moreover, the LiqTech filter press can easily be upgraded in order to meet ever-changing demands. This means that you can always increase your filter press wastewater treatment capacity if your production capacity changes. Likewise, you can always add extra features or accessories to your solution.  

Do you need more information?

If you need more information about our filter press for wastewater dewatering, please do not hesitate to contact us.

We are here to assist you!