Belt Press FAQ

What is a Belt Press Filter?

Belt Filter Presses are used to remove water from liquid residuals and produce a non-liquid material referred to as “cake.” Dewatering solids reduces the volume of residuals, improves operation, and reduces costs for subsequent storage, processing, transfer, end-use, or disposal, among other benefits. Source:  US EPA. 



Yes, we offer a range of different Belt Press Parts and Accessories for all makes and models of belt filter presses.

Please contact us to discuss your specific need. Please include your belt press make and model along with any part number.

We highly recommend running your wash system pressure at a higher pressure than what some manuals may state. If possible, over 100 psi is ideal.

Yes, we have a team of highly skilled service technicians that can come to help install your belts and provide training needed for your team to install your set of belts for your Belt Filter Press. Please contact us to discuss how we may serve your training needs for your plant.

Yes, replacing a belt is relatively easy using the proper procedures for your specific machine. In addition, as noted above, Micronics can perform the belt installation or train your team on how to do the installation, based on our years of expertise with Belt Filter Presses across many industries and operations.

A Belt Filter Press is less expensive and uses less energy than other common dewatering equipment such as screw presses or centrifuges. They are also less expensive to operate over time.

Filter Belts

Typically, under ideal conditions, the average life of a belt is 2000 hours of run time. Many factors influence the life of the felt belt including the type of sludge, condition of belt press, press design, and experience of operators running the press.

Extending belt life is dependent on several factors including machine design, plant design, maintenance, and how the machine is regularly operated. Best practices for longer belt life include:

  1. Run the belt at the optimal tension for the machine. A lower belt tension generally leads to longer belt life. Higher belt tension will have the advantage of a drier cake but leads to shorter belt life and more wear on the machine. Micronics recommends that you review your machine’s operating & maintenance manual for proper belt tensions.
  2. Maintain common wear items such as the doctor blades, wear bars, and plow chicanes.
  3. Do not exceed design tension of discharge blades. Extra weights or rachet straps will contribute to premature filter belt failure.
  4. Check the middle section of the wear bars to make sure the belt is not contacting the metal frame. This leads to premature wear.

There are several indicators that it is time for a filter belt replacement. Noticeable damage or holes worn on the filter belt is a clear sign it is time to replace a belt. If a belt is no longer cleaning well or draining properly, that is another signal to change belts. If you are running gritty sludge in your press operation, your belts may wear faster than usual.

Ideally, it is best to change out your belts on a regular schedule as part of your preventative maintenance plan. Replacing a belt after failure requires significantly more time than proactively replacing a belt before it fails.

Our belt press team will work with you on a preventative maintenance plan that will help optimize your belt press up-time.

Yes, Micronics highly recommends cleaning your belts daily. Our specially formulated Citra Solve filter belt cleaner provides aggressive concentrated cleaning to help optimize belt performance. Citra Solve is sold in 5-gallon, 30-gallon, 55-gallon, and 250-gallon totes. Please contact us for details about purchasing our filter belt cleaners.

Ultraviolet light will weaken the polyester fibers over time. Belts should never be stored outside or exposed to direct sunlight. Spare filter belts should be stored inside in a dry location with lower humidity.

Much will depend on your typical belt life and usage. However, recommended best practice is to always keep two sets of spare belts on hand. This way you are not left running without a spare belt until the new belt arrives.

Filter cloth for Belt Press filters is not micron-rated. Instead, specifications are noted for the material’s permeability in cubic feet per minute or CFM. CFM numbers vary depending upon textile type, fiber type, etc.

Please contact us to discuss belt cloth selection for your particular filtration application.

Service & Filtration Process Optimization

We will provide a small number of filter cloth samples for initial evaluation at no charge. It is customary for us to require information on the operating conditions and your goals prior to making filter cloth recommendations.

Micronics has deep expertise in filter cloth selection for a wide variety of industries and applications, including wastewater treatment and other belt press filter applications. Contact us to request a filter cloth sample today and let us help you optimize your belt press operation.

Yes, we can arrange for service technicians to visit your operation to conduct an inspection of your filtration equipment. Learn more about Micronics’ comprehensive Belt Press Services.

Contact Our Experts

Micronics Is Your Trusted Partner for Total Engineered Filtration Solutions. We offer end-to-end solutions from Filter Media to Industry-Leading Filtration Equipment, to Spare Parts & Accessories, to On-Site Field Services and In-House Laboratory Services. Whether for your Filter Press, Belt Press, Leaf Filter, Vacuum Filter, or Baghouse, you can count on Micronics’ deep industry and applications knowledge for the right engineered filtration solution to meet your needs. We look forward to working with your team.

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