Description
DAGYEE Screw Press Sludge Dewatering Machine
Dewatering Stage: The screw shaft rotates slowly, pushing sludge forward. As the chamber volume decreases, pressure builds, forcing water out through the gaps between moving and fixed rings while solids form a cake and discharge.
Selection Reference:
Daily Maintenance:
8. Service & Contact
1. Product Overview
Compared to traditional Belt filter presses and plate-and-frame filter presses, the screw press offers low energy consumption, stable operation, no clogging, and high automation. Made of SUS304 stainless steel, it can run 24/7 automatically, making it ideal for municipal wastewater, food processing, slaughterhouse, printing & dyeing, and chemical industry applications.
2. Working Principle
Dewatering Stage: The screw shaft rotates slowly, pushing sludge forward. As the chamber volume decreases, pressure builds, forcing water out through the gaps between moving and fixed rings while solids form a cake and discharge.
Self-Cleaning Stage: As the screw rotates, relative motion between moving and fixed rings automatically cleans the filter gaps, preventing clogging without frequent manual cleaning.
3. Key Advantages
- No Clogging: Self-cleaning action between moving and fixed rings eliminates clogging issues
- Low Energy: Only 2-5 rpm, consuming 1/3 the energy of belt filter presses
- Fully Automatic: PLC control with programmable cycles, unattended operation
- Compact Footprint: 50% smaller than belt filter presses
- Low Water Consumption: Only 24-216 liters per hour for cleaning
- Wide Application: Handles low-concentration sludge (≥2000mg/L), no thickening tank needed
- Long Service Life: SUS304 stainless steel, corrosion-resistant, designed for 10+ years
4. Technical Specifications
Specifications: DS capacity refers to dry solids processed per hour; sludge capacity varies by inlet concentration; final cake moisture: 75-85%; solid recovery rate: ≥95%; material: SUS304 stainless steel (SUS316L optional)
5. Comparison with Traditional Equipment
| Parameter | Belt Filter Press | Plate and Frame Press | Centrifuge | Screw Press |
|---|---|---|---|---|
| Energy Consumption | High | Higher | Highest | Lowest |
| Footprint | Large | Large | Medium | Small |
| Automation Level | Moderate | Low | High | High |
| Clogging Risk | High | High | Medium | Very Low |
| Wash Water Usage | High | Medium | Low | Very Low |
| Suitable Concentration | ≥5000 mg/L | ≥10000 mg/L | ≥3000 mg/L | ≥2000 mg/L |
| Continuous Operation | Yes | Intermittent | Yes | Yes |
Why Screw Press Stands Out
The screw press dewatering machine combines the advantages of traditional equipment while overcoming their limitations.
Its unique self-cleaning design eliminates clogging issues that plague belt and plate presses, while consuming only
one-third the energy of centrifuges. For facilities with limited space or low-concentration sludge, the screw press
offers the most cost-effective solution.
Energy Savings
Up to 70% less energy than centrifuges
Up to 70% less energy than centrifuges
Water Conservation
Minimal wash water required
Minimal wash water required
Space Efficiency
50% smaller footprint
50% smaller footprint
Continuous Operation
24/7 unattended running
24/7 unattended running
6. Selection & Maintenance
Selection Guide:
- Lower inlet concentration requires larger capacity models
- Higher concentration (>20g/L) allows smaller models
- For uncertain sludge types, provide samples for lab testing
Selection Reference:
- <120 kg-DS/day: DL101 / DL131
- 120-300 kg-DS/day: DL202
- 300-800 kg-DS/day: DL301 / DL302
- 800-1500 kg-DS/day: DL302 / DL303
- 1500 kg-DS/day: DL352 / DL403 or multiple units in parallel
Daily Maintenance:
- Daily: Check motor current, operating sound, discharge effect
- After each shift: Rinse with clean water to prevent sludge drying
- Monthly: Lubricate bearings and gearbox
- Quarterly: Inspect ring stacks and screw shaft wear
- Annually: Full disassembly inspection and replacement of wear parts
7. Applications
| Industry | Applications |
|---|---|
| Municipal Wastewater | Municipal sludge dewatering |
| Food Processing | Soybean, starch, juice, brewery wastewater sludge |
| Slaughterhouse & Farming | Livestock and poultry slaughter, farming wastewater sludge |
| Textile & Dyeing | Printing and dyeing sludge, pulp recovery |
| Paper Industry | Paper sludge, fiber recovery |
| Chemical & Pharmaceutical | Chemical sludge, pharmaceutical wastewater sludge |
8. Service & Contact
Get in Touch:
Free Application Assessment – We'll look at your wastewater and suggest what fits
Customized Design – Built around your flow, space, and treatment goals
Fast Quotation – Detailed estimate within 48 hours
Project References – We'll share examples of similar installations
Factory Tour – Come see our facility
