TL;DR
The Volute Screw Press Sludge Dewatering Machine is a low-energy, self-cleaning sludge dewatering unit that thickens and dewaters municipal and industrial sludge to 15–25% dry solids. Using a slow-rotating screw inside a volute (stacked-ring) filter, it handles oily, fibrous, and low-concentration sludge without clogging. Ideal for wastewater treatment plants, food processing, and industrial facilities needing compact, automated dewatering.
Key Takeaways
- Dewaters sludge to typically 15–25% dry solids content
- Self-cleaning volute design — near-zero spray water, no clogging
- Low energy and low noise — slow-rotating screw, typically 0.1–1.5 kW
- Handles oily, fibrous, and low-concentration sludge (0.2–5% DS)
- Compact footprint, fully automated PLC control, minimal operator attention
Overview
The Volute Screw Press Sludge Dewatering Machine (DL Series) is a compact, automated sludge dewatering unit that combines thickening and dewatering in a single machine. A slow-rotating screw inside a volute filter (stacked stainless-steel rings) gently compresses sludge, squeezing out water while the moving rings provide continuous self-cleaning. The result is dewatered sludge cake at typically 15–25% dry solids, with minimal energy, water, and operator attention.
Key Features
- Volute (stacked-ring) filter — self-cleaning, no clogging, near-zero spray water
- Slow-rotating screw — low energy, low noise, low wear
- Handles wide sludge concentration range: 0.2–5% dry solids
- Stainless steel construction — SS304 body, SS316L screw shaft optional
- PLC automatic control with variable speed drive
- Compact footprint — fits in small spaces, easy to install
Parameter Table
| Parameter | Typical Range |
|---|---|
| Model Series | DL-101 to DL-403 (multiple sizes) |
| Dry Solids Output | Typically 15–25% DS |
| Feed Sludge Concentration | 0.2–5% DS (2000–50000 mg/L) |
| Capacity | Model dependent, typically 0.1–30 m³/h sludge feed |
| Power | Typically 0.1–1.5 kW (model dependent) |
| Material | SS304 body, SS316L screw shaft optional |
| Power Supply | 380V / 50Hz (415V / 60Hz optional) |
| Operating Temperature | 5–50°C |
| Control | PLC automatic with variable speed drive |
Note: Actual performance depends on sludge type, concentration, and conditioning. Data based on municipal mixed sludge testing. Contact us for project-specific performance.
Typical Applications
- Municipal wastewater treatment plants — waste activated sludge, primary sludge
- Food processing — oily sludge, high-organic sludge
- Slaughterhouses / meat processing — fatty sludge, blood water
- Paper mills — fiber sludge, pulp sludge
- Chemical / pharmaceutical — industrial sludge
- Desalination plants — high-salinity sludge (SS316L construction)
FAQ
- How does a screw press dewater sludge? A slow-rotating screw inside a volute filter gently compresses sludge. Water passes through the gaps between stacked rings, while solids are retained and pushed forward, forming a cake at the discharge end.
- What dry solids content can a screw press achieve? Typical output is 15–25% dry solids, depending on sludge type and conditioning. Municipal sludge typically reaches 15–20% DS.
- Does a screw press clog? No. The volute (stacked-ring) design is self-cleaning — the moving rings continuously clean the filter gaps, preventing clogging even with oily or fibrous sludge.
- How much energy does a screw press use? Very low. Typical power is 0.1–1.5 kW depending on model, significantly lower than centrifuges or belt presses.
- Can a screw press handle oily sludge? Yes. The volute design handles oily, greasy, and fibrous sludge well, making it suitable for food processing and slaughterhouse applications.
- What maintenance does a screw press need? Minimal. The slow-rotating design has low wear. Routine checks include screw condition, ring gaps, and drive system.
Trade Terms
- Product sale only — no engineering, installation, or commissioning service included. Remote guidance documents provided.
- FOB Shanghai (CIF to Haiphong / Jakarta / Surabaya available on request).
- Full payment before shipment: T/T or irrevocable L/C at sight.
Contact
Email sales@yixingenviroequipment.com for a quotation within 24 hours.
We sell product only, no engineering service. Full payment before shipment, FOB Shanghai.