Energy Saving Multi Disc Screw Press for Sewage Sludge Dewatering
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Energy Saving Multi Disc Screw Press for Sewage Sludge Dewatering

This type energy-saving multi disc screw press is suitable for sewage sludge dewatering. Its treatment capacity is large, but its energy consumption is low, and it only consumes little water and electricity.
  • RDL403
  • RYDE-ENV (Ryde Environment)

Technical Specification

TypeRDL403Dry Sludge(DS) treating capacity390-480kg/h
Solid content10000-50000mg/LOutput sludge moisture content75-85%
Power supply

According to customer's requirement

Motor protection levelIP55 F
Net weight5500kgOperating weight8000kg
Dimension5010mm(Length)×2585mm(Width) ×2100mm(Height)
Energy consumption of the whole machine
Power consumption6.7kw

Water consumption240L/hWater supply pressure0.1-0.2MPa
Flocculant consumption 2-8g-PAM/kg-DS, when the concentration of PAM is 0.1-0.2%
(PAM means Polyacrylamide)
Detailed list of pipeline connection
Pipe port for sludge inletDN100    Flange Connection  PN1.0Mpa JB/T81-94
Pipe port for filtrate outletDN200  Flange Connection  PN1.0Mpa JB/T81-94
Pipe port for return flowDN150  Flange Connection  PN1.0Mpa JB/T81-94
Pipe port for sewage outlet of mixing tankDN65    Flange Connection  PN1.0Mpa JB/T81-94
Pipe port for flushing water inletDN32    Internal Thread Connection G3/4"
Pipe port for polymer inletDN32    External Thread Connection G1"
Screw bodySS304/SS316/SS2205
Mixing tankSS304/SS316/SS2205
Electric control panelSS304/SS316

1. The electronic control system can be customized according to customers'requirements. 

    It can add PLC and communication module.

2. For detailed information and drawings, please contact our engineer.

Product Description

Multi disc screw press which uses the screw extrusion principle is a new type of solid-liquid separation device. 

It reaches the goal of extrusion dewatering sludge by the powerful extrusion pressure of changing the screw diameter and distance, and the tiny spacing between moveable annular plates and fixed annular plates.



Sludge will be transported to the dewatering department after being thickened in the thickening department. 

In the advancing process, great pressure has been produced because of the gradually decreasing filter spacing and screw distance, and the back platen clogging. 

Then the volume decreases continously, and the purpose of fully dewatering will be achieved.



The main body of the Multi disc screw press is made of multiple fixed annular plates and moveable annular paltes with the screw shaft running through it.

The front part is thickening department and the ending part is dewatering department.

It can thicken and dewater sludge in one box, and has taken place of traditional filter clothes and centrifugal filtration method for its distinctive filter model.


Model Selection



Product Details


Electric Control Panel Data








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