PERFOBASK VERTICAL: Vertical Screw-Screen

Designed to be installed into sumps, manhole chambers, underground chambers, pumping stations, etc. DRYCAKE vertical screens provide a solution to facilitate lifting, washing, dewatering, compaction of solids and improving the performance and reliability of drainage systems.

Operating Principle

DSS-V vertical screens are part of the DSS, Drycake Screw-Screen, series. DSS-V are integrated machines consisting of a screen, a spiral and a press unit. During operation, solids in the incoming flow will progressively collect onto the screen mesh. At a pre-set inlet water level, the spiral will be activated and convey the solids up to the pressing zone, brushes fixed to the periphery at the lower section of the spiral will clean the screen mesh. The solids or screenings are compacted and dewatered and depending upon the solid properties, a volume reduction of around 40% DS or greater can be achieved prior to discharging the screenings into a skip or wheelie bin. Continuous bagging systems are also available to receive screenings and abate odour, the screenings can then be sealed without any personal contact.

DSS-V vertical screens can be supplied in variable lengths to suit individual applications. Vertical screens can also be designed for installation at inclined angles up to 50° from vertical.

PERFOBASK DSS-V Specifications
Flow Capacities Up to 300 l/s (1,070 m³/ h) depending upon effluent and solids contained within the flow
Fabrication: AISI: 304 or 316 Spiral: Mild steel or AISI: 304 or 316
Screen basket nominal ø 200, 300, 400, 500, 600 & 700 mm diameter
Screen Perforation Sizes 0.25, 0.5, 1, 2 mm in wedge wire
2, 3, 4, 5, 6, 7 & 10 mm perforated holes
Typical Applications
  • Pump chambers
  • Manholes, chambers and sumps
  • Small sewage treatment works
  • Municipal waste water treatment works
  • Industrial effluent discharges
  • Abattoirs, fish and other food processing plant
  • Process liquor or fluid screening
  • Sludge and scum screening
DSS-V complete with bagging system

Product Information