Energy efficiency and feasibility studies serve as the basis for modernisation projects at wastewater treatment plants and are often a prerequisite for funding. One major shortcoming is that these studies do not provide any information on how the energy balance actually changes after the optimisations have been carried out.
At the Asselbrunn wastewater treatment plant of the Mittlere Mümling wastewater association, an analysis tool was used that enables the operator to automatically generate the potential analysis from the archived process data. The energy efficiency analysis thus provides the energy status of the wastewater treatment plant at any time during operation, with characteristic values, ideal values, potentials, consumption matrix and many other analyses. The energy analysis is therefore no longer a snapshot, but enables the continuous evaluation of the energy situation of a wastewater treatment plant or other technical system.
In the June issue of wwt in the Special: Water&Energy you will find a publication on this subject by Dipl.-Ing. Norbert Meyer entitled Transparent energy balance through online energy analysis. The article describes the procedure (data basis, characteristic values, rough and detailed analyses, ideal values and potentials) in detail and illustrates it clearly with graphics.
