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Online-simulation of the WWTP to minimise the total emission of wastewater treatment plant (WWTP) and combined sewer overflow (CSO) Final report / Reduzierung der Gesamtemission aus Mischwasserueberlaeufen und Klaeranlagenablaeufen durch Nutzung der dynamischen Online-Simulation Abschlussbericht

  • Seggelke, K.
  • Rosenwinkel, K.H.
  • univ., hannover
Publication Date
Jan 01, 2003
OpenGrey Repository


The report deals with the integrated operation of the sewer network and the WWTP taking into consideration the receiving water impact. It was the objective to systematically investigate the optimisation of the integrated system, a requirement that was increasingly claimed necessary in recent years, and moreover to develop and test a dynamic operation concept by adjusting the WWTP inflow. In contrast to a strict limitation of the WWTP inflow, which in Germany commonly amounts to 2 x Q_s+Q_f, the available treatment capacity should be made use of by increasing the WWTP inflow, while combined sewer overflow (CSO) discharges and the receiving water impact should be reduced. Aside from a compilation of the present knowledge on the discharge, the management and the effects of combined water, the results of measurement campaigns and simulations are introduced. They were carried out according to both pilot scale experiments and full scale investigations in the catchment of Hildesheim. The measurements show that even with a high specific storage volume in the sewer system critical receiving water impacts may occur. At CSO events of low intensity the concentration in the overflow is higher than that in the WWTP effluent, while it is the other way round at high intensity events. Since these characteristics are dependent on the intensity and the duration of the rain event, it is crucial to optimise the subsystems operation case-dependent and online. (orig.) / SIGLE / Available from TIB Hannover: F03B336+a / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische Informationsbibliothek / Bundesministerium fuer Bildung und Forschung, Berlin (Germany) / DE / Germany

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