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Parameter calibration in a model of the secondary settling tank in wastewater treatment

Lindahl, Erik LU (2013) In Master's Theses in Mathematical Sciences FMA820 20122
Mathematics (Faculty of Engineering)
Abstract
In a wastewater treatment plant, particles (activated sludge) are separated from the liquid in a process called continuous sedimentation. This process is of crucial importance when purifying water in a wastewater treatment plant. This report will focus on a special case of sedimentation, namely batch sedimentation, which means that no flux into or out from the sedimentation tank are present. The goal is to implement and calibrate a mathematical model, that describes the phenomenon. During batch sedimentation, both in reality and in the model world, the conservation law implies solutions with shock waves. These shock waves set high standard for the numerical method used in the implementation. A specific model for this purpose is going to be... (More)
In a wastewater treatment plant, particles (activated sludge) are separated from the liquid in a process called continuous sedimentation. This process is of crucial importance when purifying water in a wastewater treatment plant. This report will focus on a special case of sedimentation, namely batch sedimentation, which means that no flux into or out from the sedimentation tank are present. The goal is to implement and calibrate a mathematical model, that describes the phenomenon. During batch sedimentation, both in reality and in the model world, the conservation law implies solutions with shock waves. These shock waves set high standard for the numerical method used in the implementation. A specific model for this purpose is going to be used. Some interesting results were found about the induction period in the initial phase of the sedimentation. Further improvements were observed when dispersion was taken into account in the model. Nevertheless, there is no doubt about the fact that more research in this area is needed. (Less)
Please use this url to cite or link to this publication:
author
Lindahl, Erik LU
supervisor
organization
course
FMA820 20122
year
type
H2 - Master's Degree (Two Years)
subject
keywords
batch sedimentation, parameter calibration, wastewater treatment, inverse modelling, shock wave
publication/series
Master's Theses in Mathematical Sciences
report number
LUTFMA-3251-2013
ISSN
1404-6342
other publication id
2013:E36
language
English
id
3865285
date added to LUP
2013-09-20 12:25:48
date last changed
2015-09-07 20:02:37
@misc{3865285,
  abstract     = {In a wastewater treatment plant, particles (activated sludge) are separated from the liquid in a process called continuous sedimentation. This process is of crucial importance when purifying water in a wastewater treatment plant. This report will focus on a special case of sedimentation, namely batch sedimentation, which means that no flux into or out from the sedimentation tank are present. The goal is to implement and calibrate a mathematical model, that describes the phenomenon. During batch sedimentation, both in reality and in the model world, the conservation law implies solutions with shock waves. These shock waves set high standard for the numerical method used in the implementation. A specific model for this purpose is going to be used. Some interesting results were found about the induction period in the initial phase of the sedimentation. Further improvements were observed when dispersion was taken into account in the model. Nevertheless, there is no doubt about the fact that more research in this area is needed.},
  author       = {Lindahl, Erik},
  issn         = {1404-6342},
  keyword      = {batch sedimentation,parameter calibration,wastewater treatment,inverse modelling,shock wave},
  language     = {eng},
  note         = {Student Paper},
  series       = {Master's Theses in Mathematical Sciences},
  title        = {Parameter calibration in a model of the secondary settling tank in wastewater treatment},
  year         = {2013},
}