6533b830fe1ef96bd1296f02

RESEARCH PRODUCT

A modification to the Activated Sludge Model No. 2 based on the competition between phosphorus-accumulating organisms and glycogen-accumulating organisms

Aurora SecoF. Garcia-usachJosé FerrerJ. Manga

subject

Environmental EngineeringDenitrificationGlycogenPhosphorusMicrobial metabolismchemistry.chemical_elementActivated sludge modelPhosphorus metabolismchemistry.chemical_compoundNutrientActivated sludgechemistryEnvironmental chemistryWater Science and Technology

description

A modification to the ASM2 is proposed which permits representation of the competition between phosphorus accumulating organisms (PAOs) and glycogen accumulating organisms (GAOs) in a nutrient removal activated sludge system. Some important aspects, which are not considered in ASM2, are discussed. The proposed modification includes denitrification by PAOs, PAO glycogen storage capability and GAO metabolism model. It is shown that the proposed modification is capable of describing pilot plant data using a single set of stoichiometric and kinetic parameters over three different sludge ages (16, 14 and 12 days). The modified ASM2 may be applicable to a wide range of situations where PAOs and GAOs can compete. This modification may well provide a better understanding about GAO behaviour.

yearjournalcountryeditionlanguage
2001-06-01Water Science and Technology
https://doi.org/10.2166/wst.2001.0679