Simplifications of Activated Sludge Model with preservation of its dynamic accuracy
Résumé
The complexity of ASM1 model is a major obstacle for their effective use in control and monitoring algorithms. In wastewater treatment plants, the effluent is in addition subjected to hydrodynamic phenomena which enhance the model complexity. The aim of model reduction is to circumvent this problem by eliminating parts of a model that are unimportant for dynamic model accuracy. In this study different ways to simplify ASM1 model simulated in BSM1 conditions are presented. The method is based on physical considerations that are analyzed separately. As no single simplification is superior in all cases, discussion aims to help the reader to make judicious choices and to appreciate the effect on dynamic model accuracy.