6-12 kg/h Screw Press Sludge Dewatering Machine for Wastewater

Product introduction for Screw Press Sludge Dewatering Machine

The multi disc screw press sludge dewatering machine is a mechanical dewatering equipment that integrates screw compression with moving and fixed ring filtration technology. It is constructed with stainless steel screw shafts and modular annular disc assemblies. The system continuously processes sludge without frequent clogging due to self cleaning ring movement. It is suitable for direct treatment of aeration tank sludge, DAF flotation sludge, and industrial waste residues. This equipment addresses challenges such as high moisture sludge, unstable solids concentration, and high maintenance requirements in conventional dewatering systems.

Working Principle

The screw press operates by feeding sludge into a rotating screw shaft surrounded by moving and fixed annular discs. As the screw rotates, sludge is transported forward while pressure gradually increases due to decreasing spacing. Water is discharged through gaps between rings, while solids are compressed into a dry cake at the outlet. Continuous ring movement prevents clogging and ensures self cleaning operation.

Product Parameter Table

Solid content	10000-50000 mg/L
Power supply	According to customer’s requirement
Net weight	250 kg
Dimension	2000 mm (Length)×790 mm (Width)×1040 mm (Height)
Power consumption	0.36 kW
Water consumption	28 L/h
Dry Sludge (DS) treating capacity	6-12 kg/h
Output sludge moisture content	75-85%
Motor protection level	IP55 F
Operating weight	390 kg
Water supply pressure	≥0.2 MPa

Main Features

• Continuous self cleaning ring system prevents clogging and reduces manual maintenance requirements significantly
• Gradual pressure increasing screw design ensures stable dewatering and consistent sludge cake formation
• Compact modular structure allows flexible installation in small or medium wastewater treatment facilities
• Low speed operation reduces energy consumption while maintaining effective solid liquid separation efficiency
• Direct sludge processing capability eliminates need for thickening tanks in many wastewater applications
• Suitable for multiple sludge types including biological, food processing, and oil contaminated industrial waste

Application Scenarios

• Municipal wastewater treatment plants for direct aeration sludge dewatering
• Slaughterhouse and agricultural wastewater containing organic and high moisture solids
• Food processing wastewater including wash down residues and organic sludge streams
• Machining and industrial oil sludge separation and volume reduction systems
• DAF flotation sludge treatment and industrial pre dewatering processes

FAQ

1. Does the system require regular cleaning?
No, the moving ring structure provides continuous self cleaning and prevents clogging.

2. Can it handle raw sludge directly?
Yes, it can dewater sludge directly from aeration tanks without thickening.

3. What types of sludge can be processed?
It handles biological sludge, food waste sludge, and industrial oily sludge.

4. Is chemical dosing required?
Yes, polymer flocculation is typically used for sludge conditioning before dewatering.

5. What makes it different from conventional screw presses?
The multi disc ring system reduces clogging and improves continuous stable operation.

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