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Germany, Austria, Switzerland


Gänserndorf, Austria

Passavant® Surface Aerator Mammutrotor®

The customer requested several surface aerators Mammutrotoren 1000-7.5 inclusive guide baffle, brake shield and other equipment.


Since start-up, the Mammutrotors® have been running completely satisfied without significant problems.

The technical support complies withthe agreements therefore the gwt certifies the Passavant the required expertise, efficiency and reliability based to the aforementioned treatment plant.


The first delivery included several7.5m Mammutrotor® and took place in calendar week 35/2014. The second delivery took place in spring 2015 and included several 4.5 m Mammutrotor®.

Key Features

gwt – Gesellschaft für Wasser- undWärmetechnik GmbH
Hirtenbergerstrasse 1
2544 Leobersdorf


Delivery Date
August2014 and April 2015



  • particularly robust operational mode and long service life.
  • constant oxygenation over entire operation time.
  • low maintenance.
  • flexible use regarding to automatic control technique and cleaning objectives.
    negative influence based on oxygenation by any sewage ingredients.

Technical Data

2 x Passavant® Surface Aerator Mammutrotor® 1000 – 7.5
Installed under concrete bridge(Installation by customer)

Nominal length of the rotor      7.5 m
Diameter:                                        1000 mm
Propulsion:                                     37 kW
Rot. frequency:                              72 min-1

4 x Passavant® Surface Aerator Mammutrotor® 1000 – 4.5
Installed under concrete bridge(Installation by customer)

Nominal length of the rotor:     4.5 m
Diameter:                                        1000 mm
Propulsion:                                     22 kW
Rot. frequency:                              72 min-1

Are you interested in more details or do you have any further requests?

Therefore, please get in touch via our general contact form and refer to this specific case study.