Comparisons
Screw Press vs. Belt Filter Press
Which dewatering technology is right for your application?
Overview
Belt filter presses and screw presses are both widely used for sludge dewatering, but they differ significantly in operating principle, maintenance requirements, and suitability for different sludge types.
Head-to-Head Comparison
| Criteria | Screw Press | Belt Filter Press |
|---|---|---|
| Operating Principle | Screw conveyance + ring disc filtration | Gravity + pressure belt filtration |
| Energy | Very low (0.2–5 kW) | Low–Medium (3–15 kW) |
| Wash Water | Minimal (24–320 L/h) | High (continuous belt wash) |
| Maintenance | Very low — no filter cloth | High — belt replacement, tracking |
| Operator Need | Minimal — 24/7 unattended | Significant — belt monitoring |
| Oily/Greasy Sludge | Excellent (self-cleaning) | Poor (cloth blinding) |
| Footprint | Compact | Large (belt length) |
| Noise | Very low | Low–Medium |
| Cake DS (WAS) | 15–22% | 16–24% |
RF Series Screw Press
Flocculation Tank & Connections
Integrated flocculation with mixer drive, polymer piping and flanged filtrate outlets for straightforward installation.
Explore the RF seriesEngineering Assessment
Ready to Find the Right Screw Press?
Our engineering team provides application-specific screw press sizing and selection — based on your sludge type, flow rate, and dewatering targets.