title: A systematic approach for model verification: application on seven published activated sludge models.
abstract: The quality of simulation results can be significantly affected by errors in the published model (typing, inconsistencies, gaps or conceptual errors) and/or in the underlying numerical model description. Seven of the most commonly used activated sludge models have been investigated to point out the typing errors, inconsistencies and gaps in the model publications: ASM1; ASM2d; ASM3; ASM3 + Bio-P; ASM2d + TUD; New General; UCTPHO+. A systematic approach to verify models by tracking typing errors and inconsistencies in model development and software implementation is proposed. Then, stoichiometry and kinetic rate expressions are checked for each model and the errors found are reported in detail. An attached spreadsheet (see http://www.iwaponline.com/wst/06104/0898.pdf) provides corrected matrices with the calculations of all stoichiometric coefficients for the discussed biokinetic models and gives an example of proper continuity checks.
authors.affiliation: Cemagref, UR HBAN, Parc de Tourvoie, BP 44, F-92163, Antony Cedex, France.
authors.forename: H
authors.initials: H
authors.lastname: Hauduc
authors.forename: L
authors.initials: L
authors.lastname: Rieger
authors.forename: I
authors.initials: I
authors.lastname: Takács
authors.forename: A
authors.initials: A
authors.lastname: Héduit
authors.forename: P A
authors.initials: PA
authors.lastname: Vanrolleghem
authors.forename: S
authors.initials: S
authors.lastname: Gillot
mesh_terms: D000465:Algorithms; D001673:Biodegradation, Environmental; D019149:Bioreactors; D003198:Computer Simulation; D007700:Kinetics; D008962:Models, Theoretical; D015203:Reproducibility of Results; D012722:Sewage; D012984:Software; D013696:Temperature; D014865:Waste Disposal, Fluid / Q000379:methods; D014871:Water Microbiology; D014874:Water Pollutants, Chemical / Q000302:isolation & purification; D018508:Water Purification / Q000379:methods
chemical_list: D012722:Sewage; D014874:Water Pollutants, Chemical