RDL302 Type Sewage Sludge Treatment Thickening And Dewatering Machine in Animal Husbandry Industry Screw Press Sludge Dehydrator
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RDL302 Type Sewage Sludge Treatment Thickening And Dewatering Machine in Animal Husbandry Industry Screw Press Sludge Dehydrator

Multi Disc Screw Press is widely used to dewater sludge of municipal administration wastewater, food, drink, slaughtering and breeding, printing, petrochemical engineering, papermaking, tannery and pharmaceutical.
  • RDL302
  • RYDE-ENV (Ryde Environment)

Technical Specification

TypeRDL302Dry Sludge(DS) treating capacity80-140kg/h
Solid content10000-50000mg/LOutput sludge moisture content75-85%
Power supply

According to customer's requirement

Motor protection levelIP55 F
Net weight1250kgOperating weight2200kg
Dimension3580mm(Length)×1320mm(Width) ×1760mm(Height)
Energy consumption of the whole machine
Power consumption2.25kw

Water consumption80L/hWater supply pressure≥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 inletDN65    Flange Connection  PN1.0Mpa JB/T81-94
Pipe port for filtrate outletDN150  Flange Connection  PN1.0Mpa JB/T81-94
Pipe port for return flowDN100  Flange Connection  PN1.0Mpa JB/T81-94
Pipe port for sewage outlet of mixing tankDN50    Flange Connection  PN1.0Mpa JB/T81-94
Pipe port for flushing water inletDN20    Internal Thread Connection G3/4"
Pipe port for polymer inletDN25    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

The Multi-Disc Screw Press Dehydrator made by Yangzhou Ryde Environment, provides the most efficient method of dewatering for municipal wastewater treatment plants and a wide range of industrial sewage sludge, containing fats, oils, fibrous and abrasive substances. 

Our Multi-disc screw press dehydrators are excellent for facilities, requiring a minimum of maintenance staff and operating costs reduction. The dewatering process is operated using minimal energy and requires the least amount of other resources (flocculant, rinsing water, wearing parts), as well as minimal maintenance and staff supervision, compared to any other dewatering equipment.


The core component of Multi-disc screw press dehydrator is the screw body, screw body has configuration with screw surrounded by filtering devices which have moving rings and fixed rings combined together and lined up.


As screw rotates, screw filters and dehydrates sludge while it is conveying sludge. Moving ring of the filtering device is moved upward as screw rotates and water was discharged from the gap made between the moving ring and fixed ring, so that sludge is filtered and dehydrated.

The space between the screw and filtering device configured by fixed ring and moving ring becomes narrower as it comes nearer to outlet. Pressure which squeeze sludge become bigger as the sludge moves toward to the outlet, so that the sludge is filtered and dehydrated tightly.


This type of dehydrator doesn't need cleaning since moving ring in the filtering device is always being moved by the rotating screws and clogging never happen. Therefore, in some wastewater treatment plants, waste sludge pulled out from aeration tank can be dehydrated directly without condensation. Polymer flocculation is used in conditioning before the dehydration.


Product Details


Model Selection


Note: Yangzhou Ryde keeps the rigfht to optimize and change the parameters.

For detailed product information, you can contact us directly.


Besides the above application, the multi-disc screw press dehydrator can be used in other applications, such as:

★ DAF float from slaughter houses and other agricultural processes

★ Food processing and wash-down wastes

★ Oil sludge from machining operations




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