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Ultra-High-Pressure Sludge Belt Dewatering Machine
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Product Introduction
Product Details
The Ultra-High-Pressure Sludge Belt Dewaterer is a revolutionary upgrade to traditional belt dewatering machines. By significantly boosting pressing force and optimizing its structural design, it achieves substantial improvements in sludge deep dewatering and overall treatment efficiency. At its core lies the "ultra-high-pressure" feature—typically, the pressure in the final squeezing zone can reach 20–30 kN/cm (approximately 200–300 kg/cm) or even higher, far surpassing the 6–15 kN/cm commonly seen in conventional belt machines.
I. Working Principle
Its working process is similar to that of a conventional belt machine, following the gradual sequence of "gravity dewatering → low-pressure dewatering → high-pressure dewatering," but with an essential enhancement during the high-pressure stage.
1. Chemical Conditioning: Sludge is first thoroughly mixed with a conditioning agent in a mixer, forming stable floc particles that release internally bound water. This is a prerequisite for efficient dewatering.
2. Gravity Dewatering Phase: The conditioned sludge is evenly spread onto the filter belt, where free water is separated through the belt under pressure.
3. Wedge-shaped Pre-compression Stage: The sludge is gradually squeezed between multiple layers of pressure plates, subjected to slowly increasing compression that further expels water.
4. Ultra-High-Pressure Pressing Stage: This is the core area of the equipment. Unlike traditional belt machines that use multiple smaller-diameter pressure rollers, ultra-high-pressure models typically feature a unique multi-layered press plate arrangement combined with a high-pressure belt-type pressing structure.
· High-pressure belt pressing: This process introduces a specialized pressure belt or filter belt, applying immense opposing pressure to both the filter belt and the sludge, achieving an ultra-high-pressure effect similar to "plate-and-frame filtration."
5. Discharging and Filter Belt Cleaning: The dewatered sludge cake is scraped off by a scraper, while the filter belt is rinsed thoroughly using an intelligent high-pressure cleaning system, effectively removing residual sludge particles, restoring its filtration performance, and preparing it for the next cycle.
II. Core Features and Advantages
1. Extremely high dry solids content in the sludge: This is its most critical and competitive advantage. It can directly dewater municipal sludge from a moisture content of 70%-80% down to 40%-50%, and even lower. The resulting sludge cake forms a firm, block-like consistency, enabling "non-sticky" discharge.
2. Significant volume and weight reduction means the sludge’s size and mass are drastically decreased, leading to savings of 30%–50% in subsequent final disposal costs. 3. Low disposal costs: The direct disposal cost for sludge is approximately 20–30 yuan per ton.
4. Large equipment capacity: Processing capability (sludge moisture content 70-80%) is 3-4 tons/hour.
5. The equipment has relatively low operating costs: It consumes less electricity and water (for cleaning purposes), and eliminates the need for subsequent drying equipment, giving it a competitive edge in overall operational expenses.
6. The equipment occupies a small footprint and is easy to install: Equipment dimensions: 6660mm × 3680mm × 5800mm.
7 Energy Conservation and Environmental Protection:
. No exhaust emissions: The entire dehydration process takes place at ambient temperature, eliminating VOCs and other odorous gases typically produced by high-temperature evaporation, making it environmentally friendly and improving the working conditions in the workshop.
· Compared to membrane plate-and-frame machines that require high-pressure pumps, it typically consumes less energy.
· Compared to traditional thermal drying, it consumes extremely low energy and relies on ambient-temperature physical dehydration.
· Reducing transportation also means lowering carbon emissions.
- A sophisticated automatic control and protection system: PLC-based fully automated control—integrating automatic detection and adjustment of all parameters, including pressure, speed, filter belt tension, web guiding, and wash water pressure. It offers easy operation and significantly reduces labor intensity.
- Multiple safety interlocks: Equipped with protective features such as filter belt deviation detection and overpressure emergency stop, ensuring the safety of both equipment and personnel.
10. Continuous operation with high processing capacity: It retains the advantages of belt conveyors—continuous feeding and discharging—while delivering a large handling capacity, making it ideal for large-scale sludge treatment projects.
- Comparison with Traditional Dehydration Equipment
| Characteristics | Ultra-High-Pressure Belt Dehydrator | Traditional Belt-Type Dewatering Machine | Plate-and-frame filter press | Centrifugal Dehydrator |
| Solids Content in Sludge | High (50%-60%) | Medium to low (18%-25%) | High (30%-40%) | Medium (20%-30%) |
| How it works | Continuous mechanical pressing + Ultra-High Pressure Multi-Layer Board Extrusion |
Continuous mechanical pressing | Intermittent High-Pressure Pressing | Continuous centrifugal force |
| Investment cost | Middle to high | Middle to high | China | Middle to high |
| Operating Costs | Low (water consumption, electricity consumption) | Middle to high | Higher (filter cloth replacement, high-pressure pump) | High (electricity consumption, maintenance) |
| Key Advantages | Deep dehydration, continuous operation, high automation, and low overall costs | Continuous operation, high moisture content, and high disposal costs | Idle operation, low efficiency, and high labor intensity | High energy consumption, loud noise, and easy wear and tear |
| Land area | Small | Smaller | Big | Small |
4. Major Application Areas
· Municipal wastewater treatment plant: Projects with high requirements for dewatered sludge cakes.
· Other fields: such as ultra-deep dewatering of organic solid wastes including food, chemicals, pharmaceuticals, sewage sludge from official websites, riverbed sludge, and kitchen waste.
Summary: The ultra-high-pressure sludge belt dewatering machine, through technological innovation, has achieved a qualitative leap in dewatering performance while retaining the continuous operation and automation advantages of traditional belt machines. This breakthrough fills the technical gap between conventional belt machines and plate-and-frame or thermal drying systems, making it a highly competitive and essential piece of equipment in today’s advanced sludge dewatering field—particularly for applications aiming at low operational costs and resource-based disposal solutions.
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Fudiyuan Engineering Equipment (Henan) Co., Ltd.
Tel：+86-13803783888
Address: No. 14, Hualiang Road, Lankao County Economic and Technological Development Zone, Kaifeng City, Henan Province
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