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Passavant Scraper Technology for Circular Tanks

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

Unique Selling Point

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 bottom scraper blades, connected to the bridge beams, push the sedimented sludge to the central sludge trough. In the case of the suction design, the sludge deposits are drawn off directly from the tank bottom. Due to the difference in water levels between the tank and the outlet channel, the bottom sludge is drawn off from there by means of height adjustable suction pipes.
Both systems can be combined with a variety of different floating scum removal systems which can be optimally adapted to local installation conditions.


Primary and secondary clarification

The aim of the primary and secondary clarification processes is to remove all floating and settleable solids, as far as possible, and to draw off clear water. Aqseptence Group develops robust, low wear scraper technologies for the...


Hahnstätten WWTP

The wastewater treatment plant of Hahnstätten in its current form is charged with a population equivalent (PE) of 15,000. It was commissioned in 1994.


Niedernhausen WWTP

The wastewater treatment plant Niedernhausen has two combi tanks which have been equipped with Passavant® scraper technology for circular tanks 20 years ago. The scrapers are made of bent aluminum profiles and have separate, advanced...



It is crucial for the subsequent purification and recycling processes, that solids are efficiently separated from industrial or municipal wastewater. Therefore, the Aqseptence Group provides products, which can be ideally adapted to suit...


Locations and Contact


Aqseptence Group FZCO, Dubai

Sales Location
East Side 5EA, 7th floor, 722
P.O. Box 371082
Dubai Airport Free Zone
United Arab Emirates

Tel: +971 42278456



Aqseptence Group Pty Ltd., Brisbane

Sales and Manufacturing Location
88 Brickyard Road,
Geebung 4034 QLD
PO Box 85, Virginia DC,
QLD 4014

Tel: +61 7 3867 5555

Fax: +61 7 3867 5566



Aqseptence Group GmbH, Aarbergen

Sales and Manufacturing Location
Passavant-Geiger-Strasse 1
65326 Aarbergen

Tel: +49 6120 280

Fax: +49 6120 28 2182


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