Estimation of stoichiometric and kinetic coefficients of ASm3 under aerobic and anoxic conditions via respirometry

Abstract

Activated Sludge Model No. 1 (ASM 1) has been used extensively for the design and simulation of biological treatment systems. Batch respirometric experiments have been described in the model for the determination of model coefficients and respirometric studies have been proved to be useful in kinetic parameter estimation and wastewater characterisation for ASM 1. Activated Sludge Model No. 3 (ASM3) has also introduced a number of kinetic and stoichiometric coefficients with the new processes defined in the model, also suggesting some default values. Recent studies on the application of ASM3 are limited to special cases in terms of parameter determination. Proper calibration of ASM3 parameters can be a difficult task without involving respirometric procedures as experimental tools. Respirometric batch tests were conveniently used in this study in order to estimate ASM3 parameters and the main kinetic and stoichiometric model coefficients were successfully and uniquely determined for aerobic and anoxic conditions for acetate.

Mathematical Modelling and Computer Simulation of Activated Sludge Systems

“…In all these models, inhibition (or saturation) terms are introduced in order to decrease the storage rate at the increasing content of the stored substrate. Due to the single growth process definition, this approach also failed to simulate high rates of oxygen uptake in the first (feast) phase and the lower rates in the second (famine) phase (Avcioglu et al 2003;Karahan-Gul et al 2003). Some of these models assume that storage is the first step followed by growth on the stored substrate, whereas the other models assume that parallel storage and growth are allowed to occur simultaneously.…”

Modeling the utilization of starch by activated sludge for simultaneous substrate storage and microbial growth

“…Supporting experimental studies using ASM3 for model simulations have mostly been performed with synthetic substrates (Avcıoglu et al, 2003;Beun et al, 2000;Dircks et al, 2001). The limited application of the model for domestic sewage (Dircks et al, 1999;Gujer et al, 2000;Karahan-Gül et al, 2002) and for industrial wastewaters (Dizdaroglu-Risvanoglu et al, 2004) have mostly suffered from the definition of readily biodegradable substrate and/or from the correct assessment of storage stoichiometry.…”

Biological treatability of raw and ozonated penicillin formulation effluent

“…Process stoichiometry of the applied model has been defined in accordance with ASM3 and the previously published literature [36,37]. A storage yield, Y STO, of 0.78 g COD (g COD) −1 and a heterotrophic growth yield, Y H , of 0.67 g cell COD (g COD) −1 have been estimated, resulting in a net biomass yield of 0.61 g cell COD (g COD) −1 .…”