Industrial screw press sludge dewaterer for municipal & industrial wastewater. Compact, energy-efficient, handles food/paper/livestock sludge.
Product Introduction
The screw press dewatering machine processes sludge in 3 stages:
- Feeding: Conditioned sludge enters from the flocculation tank.
- Compression: Rotating screw shafts gradually increase pressure, squeezing water through fixed/moving rings.
- Discharge: Dry sludge cakes exit the machine, while filtered water drains separately.
After gravity concentration in the thickening section, the sludge is transported to the dewatering section. As it moves forward, with the gradual reduction of the filter gap and pitch, as well as the blocking effect of the back pressure plate, a great internal pressure is generated, and the volume continuously decreases, achieving the goal of full dewatering.
Product Advantages
- Self-cleaning design prevents clogging
- Continuous operation with low energy use.
- Compact footprint saves space.
- Low-speed operation, low noise, friendly working environment.
- High automation, low labor intensity, unattended operation possible.
- Few wear parts, easy maintenance, long service life.
- No filter cloth/screen, no clogging, no consumable replacement cost.
Working Process
Process Flow Description for Screw Press Sludge Dewatering System
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Sludge Feeding: Wet sludge is first stored in the Sludge Tank. A Feed Pump then transfers it uniformly to the flocculation mixing tank of the Screw Press Sludge Dewatering Machine.
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Chemical Dosing: Simultaneously, polymer solution prepared in the Chemical Dosing Tank is accurately injected into the mixing tank by a Dosing Pump. The sludge and chemicals mix thoroughly, forming flocs and preparing the material for gravity drainage.
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Mechanical Dewatering: The flocculated sludge enters the main dewatering body. Through the varying pitch and diameter of the screw shaft and the filtration effect of the moving and stationary rings, the sludge is subjected to increasing pressure as it moves forward. Water is squeezed out through the ring gaps, resulting in a sludge cake with low moisture content.
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Cake Discharge & Conveying: The dewatered sludge cake is discharged from the outlet and transported horizontally or inclined by a Shaftless Conveyor to a designated storage area for truck loading and final disposal. The filtrate is returned to the upstream wastewater treatment system.
This process features high automation, low energy consumption, and easy maintenance, making it widely used in municipal and industrial sludge dewatering projects.
Application Field
1.Municipal Sewage Plants
- Treats surplus sludge with high moisture content.
2.Food Processing
- Anti-Clogging Rings: Special gap design prevents fiber entanglement (patented Model SP-F series).
- Corrosion-Resistant: 316L stainless steel for acidic/alkaline wastewater (pH 2-12 tolerance).
- Handles oily/fibrous sludge from dairies, breweries.
3.Paper & Pulp Mills
- Unique Needs:High-fiber sludge from pulping/bleaching processes.
- Effective for fiber-rich white water sludge.
4.Agriculture/Livestock
- Problem:High-organic manure sludge with odor and pathogen risks.
- Manure wastewater treatment for farms.
Technical Parameter
| Modle | Power | DS Standard Processing Capacity For Dry Mud |
Capacity | Size | Weight | Rate Of Water Content |
| ZL-101 | 0.57KW | 3-5kgDS/hr | 0.1-0.5m³/h(95%-99%) | 1860*650*1150mm | 120kg | 78%~85% |
| ZL-131 | 0.57KW | 6-10kgDS/hr | 0.2-1m³/h(95%-99%) | 2060*700*1200mm | 180kg | 78%~85% |
| ZL-201 | 0.92KW | 9-15kgDS/hr | 0.3-1.5m³/h(95%-99%) | 2760*850*1520mm | 380kg | 78%~85% |
| ZL-202 | 1.49KW | 18-30kgDS/hr | 0.6-3m³/h(95%-99%) | 2880*950*1520mm | 700kg | 78%~85% |
| ZL-301 | 1.5KW | 30-50kgDS/hr | 1-5m³/h(95%-99%) | 3280*960*1720mm | 600kg | 78%~85% |
| ZL-302 | 2.25KW | 60-100kgDS/hr | 2-10m³/h(95%-99%) | 3450*1180*1720mm | 1000kg | 78%~85% |
| ZL-401 | 2.25KW | 90-150kgDS/hr | 3-15m³/h(95%-99%) | 3950*1050*2100mm | 1100kg | 78%~85% |
| ZL-402 | 3.75KW | 180-300kgDS/hr | 6-30m³/h(95%-99%) | 4120*1380*2100mm | 1960kg | 78%~85% |
| ZL-403 | 5.6KW | 270-450kgDS/hr | 9-45m³/h(95%-99%) | 4350*1920*2100mm | 2900kg | 78%~85% |
| ZL-404 | 7.5KW | 360-600kgDS/hr | 12-60m³/h(95%-99%) | 4170*2450*2120mm | 3800kg | 78%~85% |
Project Case
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