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The Volute Sludge Dewatering Machine is designed for the efficient dewatering of municipal and industrial sludge. Utilizing an advanced multi-disc volute screw structure, the system continuously separates water from sludge, producing a high-solids sludge cake while reducing sludge volume and disposal costs.
Operating at a low rotational speed of 2–3 rpm, the machine delivers stable performance, low energy consumption, and minimal noise. Its self-cleaning design effectively reduces clogging, making it suitable for sludge with varying concentrations while minimizing maintenance requirements.
Constructed from high-quality stainless steel, the equipment offers excellent corrosion resistance and long-term durability in demanding wastewater treatment environments. The fully enclosed design helps reduce odor and maintain a cleaner operating environment.
Widely used in municipal wastewater treatment plants, food processing, chemical manufacturing, pharmaceutical, textile, paper, and other industrial applications, the Volute Sludge Dewatering Machine provides a reliable, cost-effective solution for continuous sludge dewatering.
Understanding the mechanical brilliance behind this equipment reveals exactly why it outperforms legacy systems. The architecture is deliberately designed to minimize friction while maximizing compressive force, ensuring that every drop of free water is efficiently separated from the solid mass.
The equipment operates through a meticulously phased process that guarantees optimal fluid extraction without stressing the mechanical components:
Rapid Concentration: As the central thrust shaft rotates, multiple solid laminated plates move relative to one another. Gravity instantly filters water through the precise gaps of these plates, achieving immediate volume reduction.
Progressive Dehydration: The sludge is pushed forward along the screw shaft. As it approaches the discharge outlet, the pitch of the screw tightens and the gaps between the rings shrink. This continuous reduction in cavity volume, combined with the resistance of the back pressure plate, squeezes out residual moisture.
Continuous Self-Cleaning: The interaction between the fixed rings and the swimming rings creates a constant shearing motion. This clever engineering prevents the sticky sludge from adhering to the filtration surfaces, entirely avoiding the plugging nightmares common in older technologies.
Parameter | Specification Details |
|---|---|
Product Name | Screw Press Sludge Dewatering Machine / Volute Sludge Dewatering Machine |
Main Material | Stainless Steel (SS304 / SS316 optional) |
Rotation Speed | 2~3 rpm |
Processing Capacity | 0.5 - 1300 kg-DS/h (Customizable based on models) |
Applicable Sludge Concentration | 2000 mg/L to high concentration |
Cake Solid Content | 15% - 25% (Depending on sludge characteristics) |
Operation Mode | 24-hour continuous automatic operation |
System Components | Electric control cabinet, metering tank, flocculation mixing tank, dewatering machine main body |
Key Wear Parts | Screw shaft and moving ring |
Power Consumption | Extremely low (approx. 0.01-0.1 Kwh/kg-DS) |
Noise Level | < 60 dB(A) (Low noise and vibration) |
Applicable Industries | Municipal sewage, food & beverage, petrochemical, paper, pharmaceutical, leather, chemical, printing and dyeing, etc. |
The multi-disc volute screw combines sludge thickening and dewatering in one continuous process, delivering efficient separation while preventing filter clogging.
Integrated thickening and dewatering
Self-cleaning design reduces clogging
Suitable for high-viscosity and oily sludge
Manufactured from SS304 or optional SS316 stainless steel, the machine offers excellent corrosion resistance and long-term reliability.
Corrosion-resistant stainless steel
Wear-resistant screw and rings
Long service life with low maintenance
Operating at only 2–3 rpm, the system consumes less energy than conventional dewatering equipment while reducing operating costs.
Low energy consumption
Low operating and maintenance costs
No high-pressure cleaning water required
The integrated control system supports automatic operation and can be connected with sludge pumps and polymer dosing systems.
Automatic operation
Continuous 24/7 performance
Easy system integration
The all-in-one structure reduces installation space and simplifies project implementation.
Compact footprint
Easy installation
Suitable for low-concentration sludge treatment
The enclosed design improves the working environment while supporting environmental compliance.
Low noise and low vibration
Reduced odor emissions
Cleaner and safer operation
Selecting the right equipment supplier is about securing a long-term operational partner. As a dedicated manufacturer, we bridge the gap between advanced engineering and practical facility application, delivering systems that are rigorously tested before they ever leave our production floor.
Engineering Pedigree: Decades of specialized focus on fluid separation technology ensure that every machine is built to exact tolerances.
Supply Chain Stability: Direct manufacturing capabilities mean we can fulfill large-scale procurement orders predictably and reliably, without middleman delays.
Lifecycle Support: From initial sizing and custom configuration (0.5 to 1300 kg-DS/h) to providing readily available replacement wear parts, our technical support ensures your operations never stall.
The system relies on the continuous friction between the fixed and moving rings. As the screw shaft turns, the moving rings shift slightly, mechanically clearing the filtration gaps. This self-cleaning action prevents oily, sticky substances from binding to the surface, maintaining continuous drainage without high-pressure water washing.
Yes, absolutely. The machine is specifically designed to accept low-concentration sludge (down to 2000 mg/L) directly from aeration tanks or oxidation ditches. The initial section of the drum acts as a gravity thickener, allowing you to bypass and potentially decommission existing thickening tanks, saving space and reducing odor generation.
Because the machine operates at an exceptionally low speed (2-3 rpm), mechanical wear is minimal. The primary wear components—the screw shaft and the moving rings—are manufactured from hardened stainless steel. Depending on the abrasiveness of your specific sludge, these parts typically offer thousands of hours of continuous operation before requiring refurbishment or replacement.
The integrated electric control cabinet uses standard industrial protocols and can be easily tied into existing plant-wide Supervisory Control and Data Acquisition (SCADA) systems. This allows your central control room to monitor operational status, adjust feed rates, and manage polymer dosing remotely.
The difference is staggering. A decanter centrifuge relies on high-speed rotation (often 2000-3000 rpm) to create G-force, consuming massive amounts of electricity. Our screw press operates at 2-3 rpm, utilizing mechanical pressure rather than centrifugal force. This results in power consumption that is often less than 5% of what a comparable centrifuge would require, dramatically lowering your monthly utility costs.
