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Petersdorf sewage treatment plant, Malchow, Germany

The project:

Renovation of the sewage treatment plant to permit reliable wastewater treatment in the tourist area for vacation season.


Executing company:

Malchow Municipal Utilities as customer

ROTARIA Energie- u. Umwelttechnik GmbH, Rerik


Tsurumi consultants:

Mr. Thomas Elendt (External sales force East)


The problem:

The eastern part of the Plauer See is characterised by tourism. As a result, the volume of wastewater triples during vacation season. The sewage treatment plant no longer reflected the state of the art and had insufficient capacity. The mechanically pretreated wastewater must be mixed with air to ensure nitrification and subsequent denitrification.


The solution:

The use of three Tsurumi BER immersible ventilators (ejectors) for oxygen enrichment of the wastewater in each of two basins. Simple installation and service in comparison with plate ventilation. The second basin is then put into operation as the number of vacationers increases or during service work.

In the event of abrasive and corrosive utilization, stronger wear and tear will take place naturally in certain components. With regards to the above application wear and tear can take place mainly in impeller, agitator, suction plate, shaft sleeve, oil ring, mechanical seal, pump casing, strainer, motor casing and discharge coupling. Depending on the working conditions the lifetime of those parts might vary significantly and can be shorter than the legal warranty period.
In this regard, please pay attention to our general terms and conditions that we also send to you by mail on request.