Modelling of full-scale wastewater treatment plants with different treatment processes using the Activated Sludge Model no. 3

In 1999 the Activated Sludge Model no. 3 (ASM 3) by the IWA task Group on M athematical Modeling for Design and Operation of Biological Wastewater Trea tment was presented. The model is used for simulation of nitrogen removal. On the basis of a new calibration of the ASM 3 with the easy degradable COD measured by respiration simulation runs of this paper have been done. In 2 000 a biological phosphorus removal module by the EAWAG was added to the ca librated version of ASM 3 and is now serving the current requirements for m odelling the enhanced biological P-removal. Only little experiences with di fferent load situations of large-scale wastewater treatment plants were mad e with both new models so far. This article reports the experiences with th e simulation and calibration of the biological parameters using ASM 3 and t he EAWAG BioP Module. Three different large-scale wastewater treatment plan ts in Germany with different treatment systems will be discussed (Koblenz: pre-denitrification; Hildesheim: simultaneous denitrification with EBPR; Du derstadt: intermediate denitrification with EBPR). Informations regarding t he choice of kinetic and stoichiometric parameters will be given.