Related Experiment Video
Updated: Aug 11, 2026
Comparison of Scale in a Photosynthetic Reactor System for Algal Remediation of Wastewater
Published on: March 6, 2017
Limitations of ASM1 and ASM3: a comparison based on batch oxygen uptake rate profiles from different full-scale
A Guisasola1, G Sin, J A Baeza
1Department d'Enginyeria Química, Universitat Autònoma de Barcelona 08193, Bellaterra, Spain. Albert.Guisasola@uab.es
Abstract:
The two most popular models for the description of the biological COD removal are ASM1 and ASM3. However, some numerical inconsistencies arise when using these models to interpret the data obtained in short-term respirometric batch experiments. In this study, both models are fitted to four different respirometric batch profiles obtained with biomass from different WWTP. The parameter estimation results and the practical (local) identifiability are analysed, and the limitations of both models are discussed. The growth yield obtained by fitting ASM1 to the short-term respirometric batch profiles is higher than the default one, as well as the storage yield obtained by fitting ASM3 is lower than the default one. Based on these values, possible improvements to the modelling of the biological COD removal, such as the inclusion of simultaneous growth and storage on external substrate, are proposed.
