Description
Sludge Dewatering Belt filter press
The Sludge Dewatering Belt Filter Press is a highly efficient and continuous solid-liquid separation equipment. Specifically designed for handling various industrial and municipal sludges, it significantly reduces sludge volume and weight by combining gravity drainage and mechanical squeezing, producing dry cake. Renowned for its large processing capacity, low energy consumption, and easy operation and maintenance, this machine is a critical component in modern wastewater treatment and sludge disposal processes.
How belt filter presses work
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Gravity Drainage Zone: Chemically conditioned sludge is evenly distributed on the filter belt, where most of the free water is separated through natural penetration by gravity.
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Wedge Pre-Pressing Zone: The sludge enters a gradually narrowing space where it is subjected to slowly increasing pressure, further releasing capillary water and preparing for high-pressure dewatering.
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High-Pressure Squeezing Zone: The sludge is sandwiched between the upper and lower filter belts and passes through a series of meticulously arranged press rollers. It endures shear and squeezing forces that gradually increase, ultimately forming a dry cake with high solid content that is discharged automatically.
Belt filter presses Technical
|
Sludge kinds |
Input concentration % |
Capacitym3/h.m |
DS capacitykg/h.m |
Moisture of cake% |
PAM consumption%(DP/DS ) |
|
Unconcentrated aerobic sludge |
0.5~1.5 |
15~30 |
150~300 |
~80(+2) |
2~5 |
|
Concentrated aerobic sludge |
2~4 |
6~12 |
200~300 |
~80(+2) |
2~5 |
|
Digested sludge |
3~6 |
7~15 |
300~400 |
<80 |
2~5 |
|
Unconcentrated primary sludge |
0.8~2.0 |
18~35 |
300~400 |
<80 |
2~5 |
|
Concentrated primary sludge |
3~5 |
6~12 |
300~400 |
≤80 |
2~5 |
|
Paper making activated sludge |
0.5~2.5 |
15~35 |
200~400 |
<78 |
3~7 |
|
Printing and dyeingmixed sludge |
1~3 |
10~25 |
180~350 |
75-85 |
3~10 |
Belt filter presses Advantage
BEARING FRAME Made of two very thick carbon steel plates (on request, SST), fixed to each other by means of profiles and welded to form a stiffen perfectly levelled unit. The whole structure is protected by sand-blasting type Sa 2.5, then by a zinc-aluminium alloy hot spraying and finally covered by a layer of bicomponent polyurethanic resin. Bolts and nuts are made of SST A2 AISI 304. (Ref. A)
ROLLERS The pressing, tensioning, transmission and sludge discharge rollers are protected by a layer of 8mm of rubber. The motorized pressing roller and the trajectory correction one are coated by 8 mm. of rectified rubber layer. All the rollers are supported by ball bearings type ‘Y’ which are suitably sized and guarantee a perfect impermeability. (Ref. B
BELTS TRACTION SYSTEM Models with belts width of 800, 1200, 2000 mm.: it consists of a worm motor variator with speed manual adjustment, directly keyed to the roller; Models with belts width of 1600, 2500, 2600, 3000 mm.: it consists of an epicyclic motor variator connected to a traction roller by a toothed crown and chains protected by carters. (Ref. C)
BELTS GUIDE SYSTEM Pneumatic type with proportional action probes to keep the belts continuously centered and one upon the other. (Ref. D)
BELTS TENSION SYSTEM It consists of pneumatic jacks with air springs which keep the belts tensioned. (Ref. E)
BELTS WASHING SYSTEM It consists of spray header pipes equipped with nozzles which can be cleaned by a specia plan (Ref. F)
Belt filter presses Features
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Efficient Continuous Dewatering: Capable of 24/7 continuous operation with large processing capacity and high dewatering efficiency.
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Low Energy Consumption Design: Lower operating power consumption compared to similar equipment, offering significant energy savings.
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Excellent Dewatering Performance: Produces cake with high solid content, making it easy for transportation and final disposal.
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Fully Automatic Operation: Equipped with a PLC automatic control system for hands-off operation from feeding, washing to cake discharge.
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Automatic Belt Tracking: Advanced pneumatic or electric tracking system ensures stable belt operation and extends service life.
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High-Pressure Washing System: Efficient spray nozzles provide thorough belt cleaning to prevent clogging.
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Robust and Durable Construction: Main components are made of high-quality stainless steel and anti-corrosion materials, suitable for harsh environments.
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Easy Operation and Maintenance: Modular design simplifies operation, daily maintenance, and part replacement.
Belt filter presses Benefits
•Heavy-duty all-welded main frame assures component alignment
•Modular construction allows variable roller configuration for maximum process flexibility
•Designed for continuous automatic operation requiring minimal operator attention and low maintenance
•Open design provides easy access to all components Epoxy over zinc coated frame provides maximum corrosion resistance
•Pneumatic belt tracking and tensioning provides clean, safe operation with maximum reliability
•Standard, extended, independent, or dual gravity zone for versatile, effective dewatering performance
Belt filter presses application Industries
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Municipal Wastewater Treatment Plants: For dewatering surplus sludge from domestic sewage.
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Food Processing Industry: Handles organic sludge from fruit/vegetable, beverage, and meat processing.
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Pulp & Paper Industry: Dewatering sludge from pulp and wastewater treatment.
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Petrochemical & Chemical Industry: Treats oily sludge and chemical sludge.
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Metallurgical & Mining Industry: Used for dewatering tailings and metal hydroxide sludge.
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Textile & Dyeing Industry: Treats wastewater sludge containing dyes and auxiliaries.
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Pharmaceutical Industry: For dewatering fermentation residues and wastewater sludge.
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