Screw Press Dehydrator
Screw Press Dehydrator
The screw press dehydrator is a sludge dewatering product designed for municipal and industrial wastewater treatment. It handles low-concentration sludge with high capture rates using integrated pre-thickening and a low-speed screw mechanism. Its self-cleaning system, with moving and fixed rings, prevents clogging and eliminates filter cloths. The unit operates with low energy, low noise, and minimal water consumption. Its compact, enclosed design also minimises odour and space requirements. Moreover, its automated PLC control optimises performance based on sludge conditions.
| Type | Discharge Height (mm) | L (mm) | W (mm) | H (mm) | N.W (kg) | Operating Weight (kg) | Power (kW) | Water Consumption (L/H) |
| AQT131 | 250 | 1860 | 700 | 915 | 205 | 300 | 0.2 | 24 |
| AQT132 | 250 | 1905 | 830 | 915 | 275 | 425 | 0.3 | 48 |
| AQT201 | 350 | 2555 | 920 | 1465 | 320 | 470 | 0.74 | 32 |
| AQT202 | 350 | 2615 | 960 | 1465 | 470 | 730 | 1.11 | 64 |
| AQT301 | 495 | 3325 | 870 | 1760 | 910 | 1320 | 1.5 | 40 |
| AQT302 | 495 | 3455 | 1135 | 1760 | 1350 | 2130 | 2.25 | 80 |
| AQT303 | 495 | 3670 | 1560 | 1760 | 1820 | 2880 | 3.0 | 120 |
| AQT351 | 585 | 3475 | 905 | 1820 | 1610 | 2210 | 1.1 | 72 |
| AQT352 | 585 | 3570 | 1285 | 1820 | 2300 | 3400 | 2.75 | 144 |
| AQT353 | 585 | 3645 | 1725 | 1820 | 3350 | 4850 | 3.85 | 216 |
| AQT354 | 585 | 4130 | 2180 | 1820 | 4500 | 6100 | 4.95 | 288 |
| AQT401 | 759 | 3905 | 1070 | 2210 | 2500 | 3400 | 1.85 | 80 |
| AQT402 | 759 | 4240 | 1570 | 2210 | 3480 | 5200 | 2.95 | 160 |
| AQT403 | 759 | 4465 | 2060 | 2210 | 4550 | 7050 | 4.05 | 240 |
| AQT404 | 759 | 4670 | 2630 | 2210 | 6550 | 9660 | 5.15 | 320 |
Features
Standard Features
- SS304 wet parts (SS316 optional)
- Pre-thickening spiral + screw press with moving/fixed rings
- Auto spray cleaning (PLC timed)
- Local control with VFD screw-speed control
- Filtrate tray and enclosed design for odour/splash control
Options & Accessories
- Floc tank with agitator and polymer make-up connections
- Level/flow interlocks; wash-water skid
- Covers, access platforms, cake bagging chute
- SS316 construction; IP upgrades
Working Principle
Conditioned sludge from the floc tank enters the pre-thickening zone, then the screw conveys and compresses flocculated solids through alternating moving/fixed rings. Filtrate passes to the collection tray while the cake is progressively thickened and discharged at the outlet. Timed sprays keep the ring gaps open—no filter cloth to blind.
Key Benefits
- High Dewatering Efficiency: Handles low-concentration sludge (0.2–5.0% solids) with stable performance and high capture rates. Integrated pre-thickening enhances gravity concentration and optimises dewatering.
- Self-Cleaning, No Clogging: Alternating moving and fixed rings eliminate filter cloths and prevent clogging. The automatic spray system keeps the unit clean and maintains continuous operation, even for oily sludge.
- Low Energy, Low Noise: Low-speed screw design (0.2–3 rpm) ensures quiet, energy-efficient operation—ideal for municipal and industrial use.
- Minimal Water Usage: Consumes up to 90% less wash water than traditional belt presses. Smart spray control activates only when needed, reducing operating costs.
- Compact & Enclosed Design: Small footprint and sealed body minimise odour and splashing, ensuring clean, space-efficient installation.
- Intelligent Automation: PLC-based control with variable-speed adjustment automatically optimises operation based on sludge conditions, reducing manual oversight.
- Environmentally Friendly: Reduced power and water consumption make it a cost-effective, sustainable solution for modern wastewater treatment.
Key Benefits
- High Dewatering Efficiency: Handles low-concentration sludge (0.2–5.0% solids) with stable performance and high capture rates. Integrated pre-thickening enhances gravity concentration and optimises dewatering.
- Self-Cleaning, No Clogging: Alternating moving and fixed rings eliminate filter cloths and prevent clogging. The automatic spray system keeps the unit clean and maintains continuous operation, even for oily sludge.
- Low Energy, Low Noise: Low-speed screw design (0.2–3 rpm) ensures quiet, energy-efficient operation—ideal for municipal and industrial use.
- Minimal Water Usage: Consumes up to 90% less wash water than traditional belt presses. Smart spray control activates only when needed, reducing operating costs.
- Compact & Enclosed Design: Small footprint and sealed body minimise odour and splashing, ensuring clean, space-efficient installation.
- Intelligent Automation: PLC-based control with variable-speed adjustment automatically optimises operation based on sludge conditions, reducing manual oversight.
- Environmentally Friendly: Reduced power and water consumption make it a cost-effective, sustainable solution for modern wastewater treatment.
Working Principle
Conditioned sludge from the floc tank enters the pre-thickening zone, then the screw conveys and compresses flocculated solids through alternating moving/fixed rings. Filtrate passes to the collection tray while the cake is progressively thickened and discharged at the outlet. Timed sprays keep the ring gaps open—no filter cloth to blind.
Features
Standard Features
- SS304 wet parts (SS316 optional)
- Pre-thickening spiral + screw press with moving/fixed rings
- Auto spray cleaning (PLC timed)
- Local control with VFD screw-speed control
- Filtrate tray and enclosed design for odour/splash control
Options & Accessories
- Floc tank with agitator and polymer make-up connections
- Level/flow interlocks; wash-water skid
- Covers, access platforms, cake bagging chute
- SS316 construction; IP upgrades
| Type | Discharge Height (mm) | L (mm) | W (mm) | H (mm) | N.W (kg) | Operating Weight (kg) | Power (kW) | Water Consumption (L/H) |
| AQT131 | 250 | 1860 | 700 | 915 | 205 | 300 | 0.2 | 24 |
| AQT132 | 250 | 1905 | 830 | 915 | 275 | 425 | 0.3 | 48 |
| AQT201 | 350 | 2555 | 920 | 1465 | 320 | 470 | 0.74 | 32 |
| AQT202 | 350 | 2615 | 960 | 1465 | 470 | 730 | 1.11 | 64 |
| AQT301 | 495 | 3325 | 870 | 1760 | 910 | 1320 | 1.5 | 40 |
| AQT302 | 495 | 3455 | 1135 | 1760 | 1350 | 2130 | 2.25 | 80 |
| AQT303 | 495 | 3670 | 1560 | 1760 | 1820 | 2880 | 3.0 | 120 |
| AQT351 | 585 | 3475 | 905 | 1820 | 1610 | 2210 | 1.1 | 72 |
| AQT352 | 585 | 3570 | 1285 | 1820 | 2300 | 3400 | 2.75 | 144 |
| AQT353 | 585 | 3645 | 1725 | 1820 | 3350 | 4850 | 3.85 | 216 |
| AQT354 | 585 | 4130 | 2180 | 1820 | 4500 | 6100 | 4.95 | 288 |
| AQT401 | 759 | 3905 | 1070 | 2210 | 2500 | 3400 | 1.85 | 80 |
| AQT402 | 759 | 4240 | 1570 | 2210 | 3480 | 5200 | 2.95 | 160 |
| AQT403 | 759 | 4465 | 2060 | 2210 | 4550 | 7050 | 4.05 | 240 |
| AQT404 | 759 | 4670 | 2630 | 2210 | 6550 | 9660 | 5.15 | 320 |
