Dexter Watson

Equipment for the wet waste industry

Coarse Screening Container

Our Mobile Coarse Screening containers are for sludge screening, to separate rags and other debris from a variety of sludges and bulk up sludge volume prior to flocculation and movement to the Sludge Dewatering Container. As with the rest of the Dexter Watson range, they are designed around the Roll-on-Off concept making them easily transported to site, operate and maintain.


  • Removes rags and debris from sewage
  • Screens interceptor – gully waste
  • General purpose holding tank
  • Mobile oily water interceptor (for removal of oils from water sludges see our Oily Water Separating Container)
The rear door of the Coarse Screening Container opens with the natural tip of the loader movement when locks are released, this allows the Slude Screening remnants to be cleanly deposited. The door may be locked in place by the integrated stay to allow for access.

The rear door of the Coarse Screening Container locked open to allow safe access


  • 30 m³ capacity
  • Foldaway ladder and handrails
  • Hydraulic operated rear door
  • Rear door prop and closure aid
  • 6” inlet
  • 4” outlet pipe to a sump
  • 4” lockable decant valves
  • Adjustable screening grids
  • Level indicator

A sludge screening grid winch is used to elevate the screening grids when required

The Sludge Screening system constists of a pair of fully adjustable grids which can be individually raised or lowered where required

One of the two internal sludge screening screening grids in the lowered position

The sludge screening grids are easily raised by use of the on board winch system

The sludge screening grid in transition


The sludge screening grids can also be suspended to allow the unit to be used on other projects.

Both Sludge Screening grids have been raised and locked in position.

Both sludge screening screening grids can be seen here in the fully raised position allowing the Coarse Screening Container to be used as a holding tank or for cleaning.

The Coarse Screening Container along with the Sludge Dewatering Container and a PPDU unit makes up part of the Satellite Wet Waste Treatment Station