Products Description
For wastewater treatment projects that require continuous sludge dewatering in a compact footprint, the Lingke Screw Press Sludge Dewatering Machine provides an integrated solution combining sludge conditioning, low-speed screw dewatering and electrical control.
This model is designed for a dry solids handling capacity of 9–20 kg/h, with an inlet sludge concentration range of 5,000–50,000 mg/L and an inlet sludge flow of approximately 0.45–1.5 m³/h.
With a compact overall size of 2900 × 800 × 1500 mm, the unit integrates the screw dewatering section, flocculation mixing tank and control system into one machine.
Main Specifications
| Item | Specification |
|---|---|
| Inlet Sludge Concentration | 5,000–50,000 mg/L |
| Inlet Sludge Flow | 0.45–1.5 m³/h |
| Maximum Dosing Capacity | 120 L/h |
| Overall Dimensions | 2900 × 800 × 1500 mm |
| Total Power | 0.75 kW |
| Screw Motor Power | 0.55 kW × 1 |
| Screw Speed | 0–6.3 r/min |
| Flocculation Tank Volume | Approx. 190 L |
| Flocculation Tank Size | 500 × 500 × 760 mm |
| Mixing Motor Power | 0.2 kW |
| Net Weight | 260 kg |
| Operating Weight | 500 kg |
Stainless Steel Screw Dewatering Section
The main dewatering section uses a combination of fixed rings, moving components, spacers and a central screw shaft to form the sludge dewatering structure.
For this model:
Effective filtration length: 1370 mm
Fixed ring inner diameter: Φ170 mm
Ring thickness: 2.75 mm
Ring material: SUS304 stainless steel
Support plate thickness: 6 mm
Support plate material: SUS304
Spacer thickness: 3.1 mm
Spacer material: SUS304 + polymer material
Screw shaft material: SUS304
Connecting rods: Φ12 × 4 sets, SUS304
The stainless steel components are manufactured using processes including laser cutting and argon arc welding.
The end surface of the screw shaft is specified with a wear-resistant alloy overlay, helping the component better withstand long-term mechanical contact during operation.
Low-Speed Screw Drive
The screw press is equipped with a 0.55 kW BKM90 motor with an IP54 protection rating.
The screw operates within a speed range of:
0–6.3 r/min
This low-speed operating design is suited to continuous sludge dewatering applications and allows the operating speed to be adjusted according to actual sludge conditions.
A frequency inverter is included in the control system.
Integrated Flocculation Mixing Tank
Before sludge enters the screw dewatering section, it can be conditioned in the integrated flocculation mixing tank.
The tank has:
Dimensions: 500 × 500 × 760 mm
Effective volume: approximately 190 L
Material: SUS304 stainless steel
Mixing motor: 0.2 kW
The system supports a maximum dosing capacity of 120 L/h, allowing the dosing and flocculation stage to be matched with different sludge conditions.
Integrated Electrical Control
The machine is equipped with a stainless steel electrical control cabinet measuring approximately:
W500 × H600 × D220 mm
The standard control configuration includes switches for:
Screw shaft
Flocculation mixer
Chemical dosing mixer
Sludge pump
Dosing pump
A frequency inverter is also included for operating adjustment.
The control cabinet itself is specified in SUS201 stainless steel.
Compact Design for Sludge Dewatering Projects
With an overall footprint of only 2.9 × 0.8 m, this model can be considered for projects where sludge dewatering equipment needs to be integrated into an existing wastewater treatment area or equipment room.
The combination of:
Flocculation → Screw Dewatering → Control
is integrated into a relatively compact machine structure, helping simplify the equipment arrangement required for the sludge treatment section.
Where Can This Screw Press Be Used?
The equipment can be considered for sludge dewatering sections in wastewater treatment projects where the sludge conditions fall within the machine's specified operating range.
Selection should be based on several factors rather than nominal capacity alone, including:
sludge concentration, sludge flow, sludge characteristics, chemical conditioning requirements and required dry solids handling capacity.
Different sludge sources may behave differently during flocculation and dewatering, so actual project conditions should be evaluated before equipment selection.
Why Sludge Conditions Matter
A screw press should not be selected only by wastewater treatment capacity.
For example, two wastewater treatment plants with the same daily water flow may generate very different amounts and types of sludge.
For this reason, the more useful selection information includes:
Sludge source
Inlet sludge concentration
Expected sludge flow
Required operating hours
Existing dosing system
Available installation space
Based on these conditions, the screw press model and supporting configuration can be matched more accurately to the project.
FAQ
What is the sludge treatment capacity of this model?
The specified dry solids handling capacity is DS 9–20 kg/h, with an inlet sludge flow of approximately 0.45–1.5 m³/h.
What inlet sludge concentration can it handle?
The specified inlet concentration range is 5,000–50,000 mg/L.
What material is used for the main dewatering section?
The rings, support plates, screw shaft and connecting rods are primarily made from SUS304 stainless steel according to the supplied configuration.
Does the machine include a flocculation tank?
Yes. The system includes an approximately 190 L SUS304 flocculation mixing tank with a 0.2 kW mixing motor.
Can the screw speed be adjusted?
The specified screw operating range is 0–6.3 r/min, and the electrical system includes a frequency inverter.
How do I select the right screw press model?
Selection should consider the sludge source, concentration, flow rate, dry solids load and operating requirements rather than wastewater flow alone.
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