What is a Belt Filter?
A belt filter is a dewatering system that separates solids from liquids in industrial slurries. In air emission control, it’s used after wet scrubbers to remove water from pollutant-laden slurries, producing a dry filter cake for easy disposal. This helps reduce waste volume and supports cleaner, more efficient emission treatment.
Why Choose a Belt Filter?
Aerosols and VOCs can overload extraction systems, clog filters, and endanger workers. Standard filtration often fails to catch fine mists, leading to frequent maintenance and health risks.
Coalescer Belt Filters remove fine mists before they reach downstream filters. This reduces clogging, extends filter life, and ensures safer, more efficient operations.
- 50% energy reduction compared to outdated standard solutions
- Extended lifetime of filters placed after the belt filter. Especially when handling sticky/adhesives, oily or solidifying fumes
- Automated Filtration. Less time needed by Human Resources (costs)
Normal Vs Coalescer Belt Filter
A belt filter (or belt filter press) is used for solid-liquid separation, pressing slurry between belts to remove water and produce a dry filter cake—ideal for sludge dewatering.
A coalescer belt filter focuses on liquid-liquid separation, capturing fine aerosols like oil mist by merging droplets for easy removal. It protects downstream filters and enhances air or water quality.
Proven Process: A Clear 4-step Plan to improving
Our proven approach consists of advising, designing, building and implementing tailor-made solutions:
Pre-Engineering Study
Design & Engineering
System Realization
Ready to optimize? Book a meeting with a Specialist
Start with a Pre-Engineering Study and learn how our proven process can enhance your performance, safety, and compliance. Let us help you design, realize, and maintain the perfect solution tailored to your needs for air filtration, energy recovery and more.
After implementation, we take care of ‘Preventive Maintenance’, ‘Remote Monitoring’ and Service & Spare Parts so that your Belt Filter continues to perform optimally over time.
Replacing underperforming Dust Filters with a Coalescer Belt Filter
We often encounter situations where an existing Dust Filter is performing not well. Due to the ‘sticky’ nature of the dust, filters are clogging quickly which results in swift pressure drop increase and degrease in extraction capacity. In addition frequent filter changes and maintenance are required.
By installing a JOA belt filter system to replace the existing dust filter, many issues are resolved. The belt filter is provided with a 80 meter filter roll and as the filter material becomes more and more polluted by dust, the autonomous belt filter will automatically renew the polluted filter cloth. Due to the stable pressure drop over the belt filter, sufficient extraction capacity is provided.
A High Performance Automated Belt Filter for vapor extraction and air pollution control offers:
- Energy efficiency with an average ∆P, ranging (700-1250 Pa)
- Filter media consists of multiple layers providing:
- Sub-micron particulate pre filtration
- Coalescing by a mixture of fibers in the range of 10 micron, with high surface tension characteristics
- Exhaust Fiber Mat for applying shear velocity for droplet release
- The diagonal filter positioning of the belt filter creates a larger area for air to flow through and filters particulates more effectively by forming larger aerosols.
Before implementing the belt filter from JOA, we had frequent stops and were not in control of process, including stops to replace our Active Coal Filter. Now we have stable and reliable vapor extraction providing a healthy and safe work environment
JOA Client in the Chemical Industry
Tailor-made solutions
Every production facility is unique, and so are the challenges when it comes to extraction. JOA always starts with an extensive visit to your site and a Pre-Engineering Study to gain a complete understanding of your processes. Based on measurements, calculations and modelling, we develop a tailor-made solution that perfectly matches your needs.
