Pollution load based sewer management in Cologne

ENTfrachtEN – Development of an integral process measuring and control technology concept for pollution load based real-time control of wastewater discharge with the aim of surface water relief

Controllable stormwater holding tank.  © StEB
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Installed Nivus probes in the Rodenkirchen sewer network.  © Nivus GmbH
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Installation of the probes.  © Nivus GmbH
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Together with Stadtentwässerungsbetriebe Köln and NIVUS GmbH, a management concept was developed for the combined sewer system in Cologne-Rodenkirchen, in which the control of weirs and pumps, especially in spillways is based on loads. By implementing a load-based sewer network control, it is to be ensured that the solid load that is discharged into water bodies that would lead to a critical concentration with the corresponding consequences in the water body is minimized.
 
As a parameter for these loads, the total suspended solids (TSS) load is determined by a new measuring system from NIVUS GmbH. The project is funded by the DBU and ended in March 2025.

More about the DBU funded Entfrachten project