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Multi-Disk Screw Press

Multi-Disk Screw Press is a cutting edge sludge dewatering equipment with non-clogging design and low energy consumption, especially applicable for oily sludge.

MDS Introduction

  Brief Introduction
Multi-Disk Screw Press( Hereinafter referred as MDS ) belongs to the screw press, it's clog-free and can reduce the sedimentation tank and sludge thickening tank, saving the cost of sewage plant construction. MDS using screw and the moving rings to clean itself as clog-free structure, and controlled by the PLC automatically, it's a new technology that can replace the traditional filter press like belt press and frame press, the screw speed is very low, so it cost low power and water consumption in contrast to the centrifuge, it is a cutting edge sludge dewatering machine.
The Sludge Dewatering Press is an enclosed high performance sludge dewatering system. It utilizes a central screw auger and a slowly oscillating multi-disk filter to gradually increase pressure on flocculated sludge to produce an exceptionally dry sludge cake. With electrical, water and polymer usage, and high capture rates the system is very cost effective.

The Sludge Dewatering Press can be provided with all equipment required for dewatering included and factory mounted, piped and wired on a single stainless steel skid. This equipment includes the sludge pump, wash water pump, polymer dosing system and control panel. The system features fully automated one pushbutton startup and shutdown. Once started up the system can run unattended and can be set to shutdown automatically with no operator intervention.

The Sludge Dewatering Press is constructed entirely of stainless steel.

The Sludge Dewatering Press features:
• Enclosed to minimize odors and noise
• Very low wash water usage(1/8 compared with belt press)
• Very low power consumption(1/20 compared with centrifuge)
• High cake solids
• Minimal operator requirement
• Easy to operate and maintain
• Auto start-up, run and shutdown
• Touch screen operation optional
• Sludge Flow and Cake Monitoring System
• Available with many other options like Dairy, Palm Oil, etc.

The Sludge Dewatering Press offers a completely operational, skid mounted and self-contained system which can include:
• Screw Press
• PLC Controls
• Sludge Pumps
• Back Wash System
• Flocculation System
• Polymer Dosing Unit
• Sludge Cake Conveyor

  Structure Principle
Layers of the spacers, which are Fixed and Moving Rings, are secured in place by a tie rod. The inner diameters of the Moving Rings are slightly smaller than the outer diameter of the screw and their rings. Mobilized by the screw, it continuously cleans the sludge out of the gaps, therefore, preventing clogging.

  Dewatering Principle
The initial section of dewatering drum is the Thickening Zone, where the solid-liquid separating process takes place and where the filtrate will also be discharged. The pitch of the screw and the gaps between the rings decrease at the end of dewatering drum, hence increasing its internal pressure. At the end, the End Plate further increases the pressure, so as to discharge dry sludge cake.

  Dewatering Process Flows