Volute Dewatering Equipment for All Kinds of Sludge
Description
Our innovative screw press technology combines sludge concentration and dewatering in a single compact unit, eliminating the need for separate processing systems. The unique design features interlocking fixed and movable rings working in perfect harmony around a central screw shaft, enabling reliable processing of even the most challenging sludge types—including high-oil-content sludge that cripples traditional dewatering machines.
Below we explain how our volute press works, its industry-leading features and how it can reduce your operational costs while improving environmental compliance.
How Volute Dewatering Works
The volute dewatering equipment is a next-generation solid-liquid separation device that leverages proven mechanical extrusion principles of screw press technology.
Unlike traditional belt filter presses or plate-and-frame presses that rely on filter cloths (prone to clogging and frequent replacement), our system generates powerful dewatering pressure through three key mechanisms:
Variable screw diameter that increases compression along the shaft
Progressive reduction in screw pitch from the inlet to the outlet
Tight, precision-engineered clearance between movable and fixed annular plates
This integrated design seamlessly combines sludge thickening and dewatering in one continuous process. Sludge enters the thickening department where free water is removed, then moves to the dewatering department where mechanical pressure squeezes out remaining water, producing a dry, compact sludge cake ready for disposal. The entire process streamlines your wastewater treatment workflow and eliminates bottlenecks associated with multi-stage systems.
Key Features
Clog-Free Self-Cleaning Operation
Our patented dynamic and static ring design completely eliminates filter cloth clogging—the single biggest pain point of traditional dewatering equipment. The movable rings continuously scrub the gaps between fixed rings during operation, preventing buildup and ensuring consistent performance. This innovation reduces cleaning water usage by up to 80%, eliminates internal circulation burdens and makes our equipment uniquely suited for oily sludge treatment.
Ultra-Low Energy Consumption (2-3 RPM)
Operating at an incredibly slow rotational speed of only 2-3 revolutions per minute, our volute press consumes up to 70% less power than high-speed belt filter presses. This dramatic reduction in energy use translates directly to lower monthly utility bills and a smaller carbon footprint for your facility.
Fully Automated 24/7 Continuous Operation
The integrated intelligent control panel manages the entire treatment process automatically—from sludge pumping and flocculant dosing to sludge cake discharge. No constant manual oversight is required, allowing your staff to focus on other critical tasks. This fully automated system enables uninterrupted 24/7 operation, reducing labor costs by up to 80% and maximizing throughput.
SS304/SS316 Stainless Steel Construction
All wetted parts are constructed from premium SS304 or corrosion-resistant SS316 stainless steel, ensuring exceptional durability and longevity even in harsh industrial environments. This robust construction minimizes wear and tear, extending equipment service life to 10+ years.
Compact All-in-One Design
By integrating sludge thickening and dewatering in a single unit, our equipment saves up to 50% of valuable floor space compared to separate systems. The compact footprint makes it ideal for retrofitting existing facilities or installing in space-constrained locations.
Enhanced Phosphorus Removal Functionality
Our volute press operates under aerobic conditions during dewatering, preventing phosphorus release that occurs under anoxic or anaerobic conditions in traditional systems. This significantly improves overall phosphorus removal efficiency, helping you meet strict environmental discharge standards.
Minimal Maintenance Requirements
Thanks to the self-cleaning design and rugged construction, maintenance is extremely minimal. Only periodic inspections and replacement of the screw shaft and movable rings are required (every 3-5 years depending on usage), minimizing downtime and maintenance costs.
Versatile for All Sludge Types
Our equipment effectively processes a wide range of sludge types, including high-density, low-density and especially oily sludge. This versatility makes it suitable for virtually any wastewater treatment application.
Technical Specifications
Model | Dry Sludge (DS) Treatment Capacity | 10,000mg/L | 20,000mg/L | 30,000mg/L | 40,000mg/L | 50,000mg/L |
|---|---|---|---|---|---|---|
MYDL101 | 5-7 kg/h | -0.5 m³/h | -0.25 m³/h | -0.2 m³/h | -0.15 m³/h | -0.14 m³/h |
MYDL131 | 10-14 kg/h | -1 m³/h | -0.5 m³/h | -0.4 m³/h | -0.3 m³/h | -0.28 m³/h |
MYDL201 | 15-20 kg/h | -1.5 m³/h | -0.75 m³/h | -0.6 m³/h | -0.4 m³/h | -0.3 m³/h |
MYDL202 | 30-40 kg/h | -3 m³/h | -1.5 m³/h | -1.2 m³/h | -1 m³/h | -0.8 m³/h |
MYDL203 | 45-60 kg/h | -4.5 m³/h | -2.25 m³/h | -1.8 m³/h | -1.5 m³/h | -1.2 m³/h |
MYDL301 | 50-70 kg/h | -5 m³/h | -2.5 m³/h | -2 m³/h | -1.5 m³/h | -1.4 m³/h |
MYDL302 | 100-140 kg/h | -10 m³/h | -5 m³/h | -4 m³/h | -3 m³/h | -2.8 m³/h |
MYDL303 | 150-210 kg/h | -15 m³/h | -7.5 m³/h | -6 m³/h | -4.5 m³/h | -4.2 m³/h |
MYDL304 | 200-280 kg/h | -20 m³/h | -10 m³/h | -8 m³/h | -6 m³/h | -5.6 m³/h |
MYDL351 | 100-120 kg/h | -10 m³/h | -5 m³/h | -4 m³/h | -3 m³/h | -2.4 m³/h |
MYDL352 | 200-240 kg/h | -20 m³/h | -10 m³/h | -8 m³/h | -6 m³/h | -4.8 m³/h |
MYDL353 | 300-360 kg/h | -30 m³/h | -15 m³/h | -12 m³/h | -9 m³/h | -7.2 m³/h |
MYDL354 | 400-480 kg/h | -40 m³/h | -20 m³/h | -16 m³/h | -12 m³/h | -9.6 m³/h |
MYDL401 | 130-160 kg/h | -13 m³/h | -6.5 m³/h | -5 m³/h | -4 m³/h | -3.2 m³/h |
MYDL402 | 260-320 kg/h | -26 m³/h | -13 m³/h | -10 m³/h | -8 m³/h | -6.4 m³/h |
MYDL403 | 390-480 kg/h | -39 m³/h | -19.5 m³/h | -15 m³/h | -12 m³/h | -9.6 m³/h |
MYDL404 | 520-640 kg/h | -52 m³/h | -26 m³/h | -20 m³/h | -16 m³/h | -12.8 m³/h |
Business Advantages
Significant Operational Cost Savings
Our volute dewatering equipment delivers triple bottom line savings:
Energy savings: 70% lower power consumption than traditional belt presses
Water savings: 80% reduction in cleaning water usage due to self-cleaning design
Labor savings: 80% reduction in labor costs through full automation
These savings combine to deliver a rapid return on investment, typically within 12-18 months.
Reduced Engineering & Space Investment
Unlike traditional systems that require separate thickening storage units, our equipment can process sludge directly from the aeration tank. This eliminates the need for additional construction, saving up to 40% on engineering and building costs while freeing up valuable plant space for other operations.
No Secondary Pollution & Environmental Compliance
Operating at low speed produces minimal noise (≤65dB) and vibration, creating a safer and more comfortable work environment for your staff. The self-cleaning system uses only a small amount of water for maintenance, effectively eliminating secondary water pollution. All our equipment meets strict EU and global environmental regulations, helping you maintain compliance and avoid costly fines.
Reliable Performance with Minimal Downtime
The clog-free design and robust stainless steel construction ensure consistent, uninterrupted operation. Unlike traditional presses that require frequent shutdowns for cleaning and filter cloth replacement, our volute press runs continuously with only scheduled periodic maintenance, minimizing production interruptions and maximizing your facility’s uptime.
Industry Applications
Our Volute Dewatering Equipment is trusted by facilities across 8+ industries worldwide:
Municipal Wastewater Treatment
Designed for large-scale continuous operation, with low operational costs and easy integration into existing municipal treatment systems. Ideal for handling variable sludge volumes and characteristics.
Petrochemical & Oil Refining
Specialized in handling high-oil-content sludge without clogging—a common failure point for traditional dewatering equipment. Ensures compliance with strict oily wastewater discharge standards.
Food & Beverage Processing
Effectively processes organic sludge from food production, including dairy, brewing and meat processing facilities. SS304 construction meets food safety requirements.
Slaughterhouse & Livestock Farming
Handles high-solid-content manure and slaughterhouse waste efficiently, reducing waste volume and disposal costs while preventing odor issues.
Printing & Dyeing
Processes dye-laden sludge with high color and chemical content, ensuring clear filtrate and compliance with industrial discharge standards.
Papermaking
Efficiently dewaters pulp and paper mill sludge, recovering fiber for reuse and reducing waste disposal costs.
Tanning
Handles chrome-containing and other heavy metal-laden sludge from tanning operations, producing a stable sludge cake for safe disposal.
Pharmaceutical
Processes pharmaceutical wastewater sludge with strict hygiene requirements, with SS316 stainless steel options available for corrosive applications.
Why Choose BOEEP
CE Certified Quality Assurance
All our volute dewatering equipment is CE certified, meeting strict EU safety, health and environmental protection standards. Every unit undergoes rigorous quality testing before shipment to ensure reliable performance.
Customized Solutions for Your Unique Needs
We understand that every facility has different sludge characteristics and processing requirements. We offer tailored systems with material options (SS304/SS316) and capacity ranges from 5kg/h to 640kg/h to perfectly match your specific needs.
Comprehensive Global After-Sales Support
Our team of experienced engineers provides worldwide support, including:
On-site installation guidance and commissioning
Comprehensive operator training programs
Timely spare parts supply
Remote technical support and troubleshooting
Proven Industry Track Record
With thousands of units installed in over 50 countries, BOEEP has established a reputation for delivering reliable, high-performance sludge treatment solutions that stand the test of time.
FAQ
What types of sludge can BOEEP volute dewatering equipment handle?
Our equipment is designed to process virtually all sludge types, including municipal wastewater sludge, industrial sludge and high-oil-content sludge from petrochemical and food processing facilities.
How energy-efficient is the volute screw press compared to traditional machines?
Our volute press operates at only 2-3 RPM, consuming up to 70% less power than traditional high-speed belt filter presses while delivering equivalent or better dewatering performance.
What maintenance is required and how often?
Maintenance is extremely minimal. Only periodic visual inspections and replacement of the screw shaft and movable rings are needed, typically every 3-5 years depending on usage and sludge characteristics.
Can the equipment operate 24/7 without manual supervision?
Yes, the fully automated system manages all functions—from sludge pumping to flocculant dosing and cake discharge—without constant manual oversight, enabling uninterrupted 24/7 operation.