Critical review of activated sludge modeling: State of process knowledge, modeling concepts, and limitations

2012 ◽  
Vol 110 (1) ◽  
pp. 24-46 ◽  
Author(s):  
H. Hauduc ◽  
L. Rieger ◽  
A. Oehmen ◽  
M.C.M. van Loosdrecht ◽  
Y. Comeau ◽  
...  
Keyword(s):  
Activated Sludge ◽  
Critical Review ◽  
Knowledge Modeling ◽  
Process Knowledge ◽  
Activated Sludge Modeling

A Critical Review of the Factors Affecting Modeling Oxygen Transfer by Fine-Pore Diffusers in Activated Sludge

2018 ◽  
Vol 90 (5) ◽  
pp. 431-441 ◽  
Author(s):  
Gustavo Andrés Baquero-Rodríguez ◽  
Jaime Andrés Lara-Borrero ◽  
Daniel Nolasco ◽  
Diego Rosso
Keyword(s):  
Activated Sludge ◽  
Critical Review ◽  
Oxygen Transfer ◽  
Factors Affecting

A critical review of volatile fatty acids produced from waste activated sludge: enhanced strategies and its applications

2019 ◽  
Vol 26 (14) ◽  
pp. 13984-13998 ◽  
Author(s):  
Kun Luo ◽  
Ya Pang ◽  
Qi Yang ◽  
Dongbo Wang ◽  
Xue Li ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Activated Sludge ◽  
Critical Review ◽  
Volatile Fatty Acids ◽  
Waste Activated Sludge

Nitrification parameter measurement for plant design: experience and experimental issues with new methods

2005 ◽  
Vol 52 (10-11) ◽  
pp. 461-468 ◽  
Author(s):  
R.M. Jones ◽  
C.M. Bye ◽  
P.L. Dold
Keyword(s):  
Activated Sludge ◽  
Process Design ◽  
Wastewater Treatment Plants ◽  
Measurement Techniques ◽  
Water Environment ◽  
Plant Design ◽  
New Methods ◽  
Nitrification Kinetics ◽  
Activated Sludge Modeling ◽  
Capacity Rating

Nitrification kinetics are important for process design, optimization, and capacity rating of activated sludge wastewater treatment plants. A Water Environment Research Foundation (WERF) project on Methods for Wastewater Characterization in Activated Sludge Modeling (WERF, 2003) focused significantly on the development of procedures for measuring the nitrifier maximum specific growth rate, μAUT. In addition, the importance of (and lack of data for) the nitrifier decay rate, bAUT, was identified. This paper describes three bench-scale methods for measuring μAUT: the Low F/M SBR, Washout and High F/M methods. During the WERF project, the importance of pH and temperature control was investigated briefly; this paper summarizes further experimental work performed to address these issues. A summary of μAUT measurements in a number of locations and using the different measurement techniques is provided.

Process knowledge modeling

1996 ◽  
pp. 89-104
Author(s):  
Pierre Maret ◽  
Jean-Marie Pinon
Keyword(s):  
Knowledge Modeling ◽  
Process Knowledge

scholarly journals Optimized biological nitrogen removal of high-strength ammonium wastewater by activated sludge modeling

2017 ◽  
Vol 8 (3) ◽  
pp. 393-403 ◽  
Author(s):  
Abdelsalam Elawwad
Keyword(s):  
Activated Sludge ◽  
Nitrogen Removal ◽  
Treatment Plant ◽  
High Strength ◽  
Simulation Software ◽  
Operating Conditions ◽  
Biological Nitrogen Removal ◽  
Sampling Campaign ◽  
Activated Sludge Modeling ◽  
Biological Nitrogen

Abstract Wastewater containing high ammonium concentrations is produced from various industrial activities. In this study, the author used a complex activated sludge model, improved by utilizing BioWin© (EnviroSim, Hamilton, Canada) simulation software, to gain understanding of the problem of instability in biological nitrogen removal (BNR). Specifically, the study focused on BNR in an industrial wastewater treatment plant that receives high-strength ammonium wastewater. Using the data obtained from a nine-day sampling campaign and routinely measured data, the model was successfully calibrated and validated, with modifications to the sensitive stoichiometric and kinetic parameters. Subsequently, the calibrated model was employed to study various operating conditions in order to optimize the BNR. These operating conditions include alkalinity addition, sludge retention time, and the COD/N ratio. The addition of a stripping step and modifications to the configuration of the aerators are suggested by the author to increase the COD/N ratio and therefore enhance denitrification. It was found that the calibrated model could successfully represent and optimize the treatment of the high-strength ammonium wastewater.

scholarly journals CFD-aided modelling of activated sludge systems – A critical review

2016 ◽  
Vol 88 ◽  
pp. 861-879 ◽  
Author(s):  
Anna M. Karpinska ◽  
John Bridgeman
Keyword(s):  
Activated Sludge ◽  
Critical Review ◽  
Activated Sludge Systems

Activated sludge model (ASM) based modelling of membrane bioreactor (MBR) processes: A critical review with special regard to MBR specificities

2010 ◽  
Vol 44 (15) ◽  
pp. 4272-4294 ◽  
Author(s):  
A. Fenu ◽  
G. Guglielmi ◽  
J. Jimenez ◽  
M. Spèrandio ◽  
D. Saroj ◽  
...  
Keyword(s):  
Activated Sludge ◽  
Critical Review ◽  
Membrane Bioreactor ◽  
Activated Sludge Model ◽  
Special Regard
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