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Critical analysis of constitutive functions for hindered settling velocity in 1-D settler models

Torfs, Elena ; Balemans, Sophie ; Locatelli, Florent ; Laurant, Julien ; Francois, Pierre ; Burger, Raimund ; Diehl, Stefan LU and Nopens, Ingmar (2015) 9th IWA Symposium on Systems Analysis and Integrated Assessment (Watermatex)
Abstract
Advanced 1-D models for secondary clarifiers aim to incorporate more realism by explicitly accounting for several phenomena that influence the settling process. For each of them a valid mathematical expression needs to be selected to obtain a calibrated model that can be used for operation and control. The presented work evaluates different available expressions for hindered
settling based on long term batch settling data. The analysis shows that the exponential forms which are most commonly used in traditional SST models not only account for hindered settling but partly lump other phenomena as well. This makes them unsuitable for advanced 1-D models that explicitly
include each phenomenon in a modular way. A power-law function is... (More)
Advanced 1-D models for secondary clarifiers aim to incorporate more realism by explicitly accounting for several phenomena that influence the settling process. For each of them a valid mathematical expression needs to be selected to obtain a calibrated model that can be used for operation and control. The presented work evaluates different available expressions for hindered
settling based on long term batch settling data. The analysis shows that the exponential forms which are most commonly used in traditional SST models not only account for hindered settling but partly lump other phenomena as well. This makes them unsuitable for advanced 1-D models that explicitly
include each phenomenon in a modular way. A power-law function is shown to be more appropriate to describe the hindered settling velocity. (Less)
Please use this url to cite or link to this publication:
author
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organization
publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
published
subject
keywords
Secondary clarifier, calibration, compression settling
host publication
9th IWA Symposium on Systems Analysis and Integrated Assessment (Watermatex)
pages
5 pages
conference name
9th IWA Symposium on Systems Analysis and Integrated Assessment (Watermatex)
conference location
Gold Coast, Australia
conference dates
2015-06-14 - 2015-06-17
language
English
LU publication?
yes
id
732780b7-b28b-442c-bfbb-ace0274cf2ad
alternative location
http://www.awmc.uq.edu.au/filething/get/4750/5-1_Torfs_%20WTMTX15.pdf
date added to LUP
2019-06-13 11:34:18
date last changed
2019-07-11 00:59:54
@inproceedings{732780b7-b28b-442c-bfbb-ace0274cf2ad,
  abstract     = {{Advanced 1-D models for secondary clarifiers aim to incorporate more realism by explicitly accounting for several phenomena that influence the settling process. For each of them a valid mathematical expression needs to be selected to obtain a calibrated model that can be used for operation and control. The presented work evaluates different available expressions for hindered<br/>settling based on long term batch settling data. The analysis shows that the exponential forms which are most commonly used in traditional SST models not only account for hindered settling but partly lump other phenomena as well. This makes them unsuitable for advanced 1-D models that explicitly<br/>include each phenomenon in a modular way. A power-law function is shown to be more appropriate to describe the hindered settling velocity.}},
  author       = {{Torfs, Elena and Balemans, Sophie and Locatelli, Florent and Laurant, Julien and Francois, Pierre and Burger, Raimund and Diehl, Stefan and Nopens, Ingmar}},
  booktitle    = {{9th IWA Symposium on Systems Analysis and Integrated Assessment (Watermatex)}},
  keywords     = {{Secondary clarifier; calibration; compression settling}},
  language     = {{eng}},
  title        = {{Critical analysis of constitutive functions for hindered settling velocity in 1-D settler models}},
  url          = {{http://www.awmc.uq.edu.au/filething/get/4750/5-1_Torfs_%20WTMTX15.pdf}},
  year         = {{2015}},
}