Municipal Sludge Screw Press
The PT&M designed Municipal Sludge (MS) Screw Press is ideal for low-friction dewatering applications such as primary sludge, secondary sludge, and digested sludge.
Benefits
- Reduction of energy consumption
- Reduced polymer consumption
- Reduced maintenance cost
- High capture rates
- Minimum water usage
- High discharge solids
- Reduced odors compared to belt presses
- Pre-thickeners not required
- Reduced operator attention
Features
- Gradual reducing Archimedes screw
- Slotted screen baskets – 0.010” – 0.035”
- 1 HP per dry ton
- Totally enclosed reduced odors
- 304 stainless steel all wetted surfaces
- Pneumatic driven back pressure cone
- Automatic shower
- Shaft mounted gear reducer, low HP
Results
| Cake Solids (%) Primary Raw | 12 – 24% |
| Cake Solids (%) Anaerobic Digested | 22 – 34% |
| Solids feed (%) | 1 – 4% |
| Solids Capture | 90 -98% |
| Polymer (lb active/dry ton) | 15 – 30 |
| Flow rates GPM per unit | 1 – 150 |
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Estimated Sizes and Capacities of MS Screw Presses
| Model Number | Estimated Capacity |
|---|---|
| MS600 | 0.5 Dry tons @ 2% solids |
| MS1200 | 1.5 Dry tons @ 2% solids |
| MS1800 | 5 Dry tons @ 2% solids |
| MS2200 | 8.5 Dry tons @ 2% solids |
| MS2800 | 18 Dry tons @ 2% solids |
| MS3600 | 26.5 Dry tons @ 2% solids |
Applications Detail
- Primary Sludge – raw feces and organic material
- Secondary Sludge – waste activated sludge from clarifiers
- Digested Sludge – Anaerobic / Aerobic bacteria breaking
down organic material into methane or carbon dioxide
Municipal Screw Press Maintenance
- Cleaning of screen baskets – automatic once every hour, manual once per week.
- Lubricate bearings once per week.
- Replace gearbox oil once per year.
- Screw shaft rebuild every 7 to10 years
- Replace bearings every 7 to 10 years
- Replace seals every 3 to 4 years
Downloads
- Literature: Municipal Sludge (MS) Screw Press