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Germany, Austria, Switzerland


Passavant® Scraper Technology for Longitudinal Tanks

The Passavant® Scraper Technology for Longitudinal Tanks have been especially developed for automatically scraped, rectangular sedimentation tanks.

Unique Features

  • For a safe year-round operation even in ice, snow and wet surface, Passavant Scrapers are available with positive drive via rack and rail.
  • Passavant represents robust, tried and tested scraper technology with a long life time cycle.
  • A long-term spare parts supply is ensured.


The bridge design Passavant® Scraper Technology for Longitudinal Tanks spans one or several side by side installed longitudinal tanks. The blade scraper pushes the sludge deposits, against the direction of the flow, into a sludge hopper located at the inlet, whilst the suction system conveys the sediment from the tank bottom directly to a collecting trough. 
As an optional system, sludge removal is also possible in both operational directions, enabling the removal of higher quantities of sludge with a shorter sludge retention period. The floating scum is generally moved in flow direction to the outlet end of the sedimentation tank, from where it is removed.