Belt Filter Press Dewatering

Belt Filter Press Dewatering

Solids Handling, Screening & Sludge Treatment Equipment
Belt filter press from AquipTec

The Belt Filter Press is used to remove water from sludge and turn it into a solid, stable material. It uses gravity and pressure together to reduce moisture effectively. The process happens in 3 stages (gravity, wedge, and pressure zones) to remove as much water as possible while staying energy efficient. It works continuously with automatic controls, so it needs very little operator attention. Its strong design and low-speed operation make it reliable, quiet, and easy to maintain. Reducing sludge volume, it helps lower disposal and transport costs, making it a cost-effective solution for wastewater treatment.

FA 01

1. What is a belt filter press?

A belt filter press is a sludge dewatering system that removes water from sludge using moving filter belts and mechanical pressure.

2. What are the main benefits of a belt filter press?

Belt filter press runs continuously, removes water from sludge efficiently, and reduces the overall volume. It also uses little energy and works reliably without needing much operator attention.

3. Where can a belt filter press be used?

Belt filter presses are widely used in municipal wastewater plants, industrial processing, mining, and food production to reduce sludge volume and lower disposal costs.

4. What level of dryness can you expect?

A belt filter press dewatering system can produce sludge cake with around 70–80% moisture content, depending on the sludge type and operating conditions.

Specification and Parameters 01
Model AQT-500 AQT-1000A AQT-1500A AQT-1500B AQT-2000A AQT-2000B AQT-2500A AQT-2500B AQT-3000
Output Moisture Content (%) 70–80
Polymer Dosing Rate (%) 1.8–2.4
Dried Sludge Capacity (kg/h) 100–120 200–203 300–360 400–460 470–550 600–700
Belt Speed (m/min) 1.57–5.51 1.04–4.5
Main Motor Power (kW) 0.75 1.1 1.5
Mixing Motor Power (kW) 0.25 0.25 0.37 0.55
Effective Belt Width (mm) 500 1000 1500 1500 2000 2000 2500 2500 3000
Water Consumption (m³/h) 6.2 11.2 16 17.6 20.8 22.4 24.1 25.2 28.8

 

 

Feature 01

Features

Standard Features

  • Stainless steel construction (SS304/SS316) for corrosion resistance and long service life
  • Dual permeable filter belts for continuous solid-liquid separation
  • Multi-stage dewatering zones (gravity, wedge, and pressure zones) for optimised performance
  • Pneumatic belt tensioning and tracking system for stable operation
  • High-quality filter belts with extended service life
  • Roller system designed for progressive pressure and efficient dewatering
  • Integrated filtrate collection system for clean operation
  • Low-speed operation for reduced noise and energy consumption
  • Safety sensors and an emergency stop system for operational safety
  • User-friendly design for easy operation and maintenance

Options & Accessories

  • Polymer dosing system for improved sludge conditioning
  • Variable speed drive for process optimisation
  • Belt washing system with high-pressure spray nozzles
  • Automated control panel with PLC integration
  • Customised belt width and machine capacity for project-specific requirements
Working principl 01

Working Principle

The Belt Filter Press operates through a continuous multi-stage dewatering process combining gravity, shear, and mechanical pressure.
Conditioned sludge is first fed onto a moving filter belt, where free water is removed in the gravity drainage zone. The sludge then passes through a wedge zone, where it is gently compressed between two belts to prepare for further dewatering. In the pressure zone, the sludge is subjected to increasing mechanical pressure as it passes through a series of rollers. This progressively squeezes out additional water, forming a dewatered filter cake. The final cake is discharged for disposal or further processing, while the filtrate is collected and returned to the treatment system.

Key Benefits 01

Key Benefits

  • High-Efficiency Sludge Dewatering
    Combines gravity drainage and progressive pressure zones to achieve effective water removal and produce a stable, low-moisture filter cake.
  • Continuous & Automated Operation
    Operates as a continuous process, ensuring consistent performance with minimal operator intervention.
  • Reduced Disposal Costs
    Significantly reduces sludge volume, lowering transport, handling, and disposal costs.
  • Energy-Efficient Performance
    Low-speed operation and optimised system design minimise power consumption while maintaining high efficiency.
  • Reliable & Stable Operation
    Pneumatic belt tensioning and controlled pressure zones ensure smooth, stable performance under varying conditions.
  • Low Noise & Easy Maintenance
    Designed with durable components and low-speed operation to reduce noise levels and simplify maintenance.
Key-mobile

Key Benefits

  • High-Efficiency Sludge Dewatering
    Combines gravity drainage and progressive pressure zones to achieve effective water removal and produce a stable, low-moisture filter cake.
  • Continuous & Automated Operation
    Operates as a continuous process, ensuring consistent performance with minimal operator intervention.
  • Reduced Disposal Costs
    Significantly reduces sludge volume, lowering transport, handling, and disposal costs.
  • Energy-Efficient Performance
    Low-speed operation and optimised system design minimise power consumption while maintaining high efficiency.
  • Reliable & Stable Operation
    Pneumatic belt tensioning and controlled pressure zones ensure smooth, stable performance under varying conditions.
  • Low Noise & Easy Maintenance
    Designed with durable components and low-speed operation to reduce noise levels and simplify maintenance.
working-mobile

Working Principle

The Belt Filter Press operates through a continuous multi-stage dewatering process combining gravity, shear, and mechanical pressure.
Conditioned sludge is first fed onto a moving filter belt, where free water is removed in the gravity drainage zone. The sludge then passes through a wedge zone, where it is gently compressed between two belts to prepare for further dewatering. In the pressure zone, the sludge is subjected to increasing mechanical pressure as it passes through a series of rollers. This progressively squeezes out additional water, forming a dewatered filter cake. The final cake is discharged for disposal or further processing, while the filtrate is collected and returned to the treatment system.

Features-mobile

Features

Standard Features

  • Stainless steel construction (SS304/SS316) for corrosion resistance and long service life
  • Dual permeable filter belts for continuous solid-liquid separation
  • Multi-stage dewatering zones (gravity, wedge, and pressure zones) for optimised performance
  • Pneumatic belt tensioning and tracking system for stable operation
  • High-quality filter belts with extended service life
  • Roller system designed for progressive pressure and efficient dewatering
  • Integrated filtrate collection system for clean operation
  • Low-speed operation for reduced noise and energy consumption
  • Safety sensors and an emergency stop system for operational safety
  • User-friendly design for easy operation and maintenance

Options & Accessories

  • Polymer dosing system for improved sludge conditioning
  • Variable speed drive for process optimisation
  • Belt washing system with high-pressure spray nozzles
  • Automated control panel with PLC integration
  • Customised belt width and machine capacity for project-specific requirements
SaP
Model AQT-500 AQT-1000A AQT-1500A AQT-1500B AQT-2000A AQT-2000B AQT-2500A AQT-2500B AQT-3000
Output Moisture Content (%) 70–80
Polymer Dosing Rate (%) 1.8–2.4
Dried Sludge Capacity (kg/h) 100–120 200–203 300–360 400–460 470–550 600–700
Belt Speed (m/min) 1.57–5.51 1.04–4.5
Main Motor Power (kW) 0.75 1.1 1.5
Mixing Motor Power (kW) 0.25 0.25 0.37 0.55
Effective Belt Width (mm) 500 1000 1500 1500 2000 2000 2500 2500 3000
Water Consumption (m³/h) 6.2 11.2 16 17.6 20.8 22.4 24.1 25.2 28.8

 

 

FAQ

1. What is a belt filter press?

A belt filter press is a sludge dewatering system that removes water from sludge using moving filter belts and mechanical pressure.

2. What are the main benefits of a belt filter press?

Belt filter press runs continuously, removes water from sludge efficiently, and reduces the overall volume. It also uses little energy and works reliably without needing much operator attention.

3. Where can a belt filter press be used?

Belt filter presses are widely used in municipal wastewater plants, industrial processing, mining, and food production to reduce sludge volume and lower disposal costs.

4. What level of dryness can you expect?

A belt filter press dewatering system can produce sludge cake with around 70–80% moisture content, depending on the sludge type and operating conditions.