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

Forskningsoutput: Kapitel i bok/rapport/Conference proceedingKonferenspaper i proceeding


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.


  • Elena Torfs
  • Sophie Balemans
  • Florent Locatelli
  • Julien Laurant
  • Pierre Francois
  • Raimund Burger
  • Stefan Diehl
  • Ingmar Nopens
Enheter & grupper
Externa organisationer
  • University of Strasbourg
  • University of Concepción
  • Ghent University

Ämnesklassifikation (UKÄ) – OBLIGATORISK

  • Matematisk analys
  • Vattenteknik


Titel på värdpublikation9th IWA Symposium on Systems Analysis and Integrated Assessment (Watermatex)
Antal sidor5
StatusPublished - 2015
Peer review utfördJa
Evenemang9th IWA Symposium on Systems Analysis and Integrated Assessment (Watermatex) -, Gold Coast, Australien
Varaktighet: 2015 jun 142015 jun 17


Konferens9th IWA Symposium on Systems Analysis and Integrated Assessment (Watermatex)
Ort Gold Coast