SEM Mechanical De-watering Module (MDM)

The MDM patent-pending technology is a screw-press, de-watering / liquid separation system. It not only removes the liquid phase from slurries, but also captures micro-solids as small as colloidal particles ensuring maximum solids capture and minimal solid matter in treated filtrate.

How does it work?

SEM Mechanical De-watering Module (MDM) is a screw-press solid separating system. It can be operated as a standalone unit or it can be incorporated with additional components as part of a more complex existing treatment train.

The design is based around a screw-press, since these systems typically run far more slowly than decanters. This is advantageous because the more slowly a slurry is compressed, and the longer it is pressurised, the greater the volume of liquid fraction removed. Moreover, because screw-press units experience fewer stresses, they carry out the de-watering process more efficiently and more reliably. The MDM incorporates unique features that allow the technology to be hard-piped into a de-watering / liquid separation treatment system.

The intake and discharge of the MDM is comprised of flanged connections. The revolutionary design feature means that all material entering or being discharged from the system can be directed and controlled, as opposed to simply being channelled or deposited as a mixture. As a result, micro-solids are captured and re-circulated through the system, ensuring maximum capture capability.


The technology allows for the following benefits:

  • Modular design that can be easily daisy chained to increase flow rates
  • Low power requirement
  • Minimal moving parts and RPM reducing wear on parts
  • Micro solids screen deck to capture the maximum solids ratio
  • Cleaner filtrate reducing stress on polishing systems
  • Fully automated with IoT integrated

Applicable markets

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