Maximizing Sludge Reduction: High-Performance Decanter Centrifuges for Municipal Wastewater and Mining Applications
In modern industrial and municipal wastewater treatment, sludge handling typically accounts for up to 60% of total operational costs. Conventional dewatering methods often suffer from either excessively high cake moisture content—driving up transportation expenses—or excessive polymer (flocculant) consumption.
Our heavy-duty horizontal screw decanter centrifuge is engineered specifically to address these challenges. Whether you’re processing municipal sludge, industrial effluent, or mineral tailings, our system delivers among the lowest achievable cake moisture levels and exceptionally clear centrate in the market.
Unlike standard centrifuges, our units feature critical components protected with duplex stainless steel or tungsten carbide wear-resistant alloys, ensuring durability in the harshest environments.
Key Design Advantages
-
High Length-to-Diameter Ratio (L/D = 3.5–4.2)
Extends residence time inside the bowl, enabling effective dewatering even of difficult-to-process biological sludges—achieving cake dryness of ≤75–80% moisture (depending on feed characteristics). -
High G-Force Separation (Up to 3,000–4,000 × g)
Captures fine particles down to the micron level, significantly outperforming belt filter presses in both clarity and solids recovery. -
Optimized Differential Gearbox
Equipped with either hydraulic or planetary gear differential drives, offering high torque and excellent shock resistance—ideal for abrasive feeds like sand-laden slurries or mining tailings.
Core Benefits – Your Return on Investment
| Benefit | Impact |
|---|---|
| Lower Transportation Costs | Drier cakes = fewer truckloads and reduced disposal fees |
| Reduced Polymer Consumption | Advanced liquid pool depth control saves 10–15% in flocculant vs. competitors |
| Fully Automated & Continuous Operation | 24/7 unattended operation with PLC/HMI control; minimal manual intervention |
| Extended Service Life | Scroll flights hardfaced with tungsten carbide alloy, rated for >30,000 operating hours |
Applications
- Municipal Sector: Thickening and dewatering of waste activated sludge (WAS) at sewage treatment plants
- Industrial Sector: Chemical, textile dyeing, paper mill white water, and food processing wastewater
- Mining & Construction: Coal washery effluent, mineral tailings dewatering, and TBM (tunnel boring machine) slurry processing
Choosing our decanter centrifuge means choosing lower lifecycle costs and higher environmental compliance. We offer end-to-end support—from engineering selection and installation to global after-sales service.
Comprehensive Technical Specifications (General Industry Standard)
Note: The following data represent typical industry ranges for reference purposes and are not brand-specific. Suitable for inclusion in generic product specification sheets.
General Specifications
| Parameter Category | Item | Small Model | Medium Model | Large Model |
|---|---|---|---|---|
| Basic Dimensions | Bowl Diameter (mm) | 350 – 450 | 500 – 650 | 700 – 800+ |
| Length-to-Diameter Ratio (L/D) | 3.5 – 4.2 | 3.8 – 4.2 | 4.0 – 4.5 | |
| Effective Settling Area (m²) | 10 – 20 | 25 – 60 | 70 – 120 |
Performance Parameters
| Parameter Category | Item | Small Model | Medium Model | Large Model |
|---|---|---|---|---|
| Capacity & Speed | Throughput (m³/h) | 5 – 20 | 20 – 60 | 60 – 150+ |
| Max. Bowl Speed (rpm) | 4,500 | 3,500 | 2,800 | |
| Separation Factor (×g) | Up to 4,000 | Up to 3,200 | Up to 2,500 | |
| Differential Speed (rpm) | 0.5 – 20 (adjustable) | 0.5 – 20 (adjustable) | 0.5 – 20 (adjustable) |
Cake & Separation Performance
| Parameter | Small Model | Medium Model | Large Model |
|---|---|---|---|
| Cake Moisture – Municipal Sludge | 75% – 80% | 75% – 80% | 75% – 80% |
| Cake Moisture – Industrial Sludge | 65% – 75% | 65% – 75% | 65% – 75% |
| Solid Recovery Rate | ≥ 95% | ≥ 95% | ≥ 95% |
Construction Materials
| Component | Small Model | Medium Model | Large Model |
|---|---|---|---|
| Bowl Material | Duplex SS 2205 / 316L | Duplex SS 2205 | Super Duplex Stainless Steel |
| Scroll (Screw) Material | 316L + Tungsten Carbide-tipped flights | 316L + Tungsten Carbide-tipped flights | 316L + Tungsten Carbide wear tiles |
| Frame/Base Material | Painted carbon steel or stainless steel | Painted carbon steel | Heavy-duty carbon steel structure |
Power & Physical Dimensions
| Parameter | Small Model | Medium Model | Large Model |
|---|---|---|---|
| Main Motor Power (kW) | 15 – 30 | 37 – 75 | 90 – 160 |
| Backdrive (Scroll) Motor Power (kW) | 4 – 7.5 | 11 – 22 | 30 – 45 |
| Length (mm) | 2,500 – 3,500 | 3,500 – 4,500 | 4,500 – 6,000 |
| Width (mm) | 800 – 1,200 | 1,200 – 1,600 | 1,600 – 2,200 |
| Height (mm) | 1,000 – 1,400 | 1,400 – 1,800 | 1,800 – 2,300 |
| Weight (kg) | 2,000 – 3,500 | 4,000 – 8,000 | 9,000 – 15,000 |
Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.