ISSN print edition: 0366-6352
ISSN electronic edition: 1336-9075
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Dynamic simulations of waste water treatment plant operation

Ján Derco, Lenka Černochová, Ľubomír Krcho, and Antonio Lalai

Faculty of Chemical and Food Technology, Institute of Chemical and Environmental Engineering, Slovak University of Technology, Radlinského 9, 812 37 Bratislava, Slovakia



Abstract: Activated Sludge Model No. 1 (ASM1) was used to model the biological stage of an actual waste water treatment plant (WWTP). Some possibilities for the utilisation of simulation programs for WWTP operation are presented. Simulation calculations were performed taking the conditions of WWTP in Nové Zámky, the Slovak Republic, into consideration, where measurements of the diurnal variations in waste water flow and composition at the inlet and outlet were carried out. A calibrated model predicting the influence of changes in the waste water composition and the operational parameters on the effluent waste water quality and related operational costs is available. Values of the operational parameters (solids retention time, internal recirculation flow, dissolved oxygen concentration) for effective operation (effluent concentration values, oxygen consumption, charges, i.e. charges for waste water discharge into the recipient water body) of the WWTP were obtained by simulations. The presented results are for illustration purposes only and are not intended as instructions for the operation of a waste water treatment plant. They correspond to the calibrated mathematical model ASM 1 based on the results of experimental measurements and operational data, as well as on the technical and monitoring level of the WWTP.

Keywords: ASM1 – biological processes – calibration – dynamic simulations – nitrogen removal – waste water treatment plant

Full paper is available at

DOI: 10.2478/s11696-011-0076-4


Chemical Papers 65 (6) 813–821 (2011)

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