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An evaluation of a dynamic model of the secondary clarifier

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Author

Summary, in English

The main objective of the paper is to support and illustrate recent theoretical results on the mathematical modelling of the secondary clarifier. A new settler model is compared with a traditional layer model by means of numerical simulations. Emphasis is put on the numerical solution's ability to approximate the analytical solution of the conservation law written as a non-linear partial differential equation. The new settler model is consistent in this respect. Another important conclusion is that a layer model dividing the settler into only ten layers (normally used in settler models) is too crude an approximation to capture the detailed dynamic behaviour of the settler. All simulations presented are performed with the settler models coupled to the IAWQ Activated Sludge Model No. 1.

Department/s

Publishing year

1996

Language

English

Pages

19-26

Publication/Series

Water Science and Technology

Volume

34

Issue

5

Document type

Journal article

Publisher

IWA Publishing

Topic

  • Mathematics
  • Computational Mathematics
  • Other Electrical Engineering, Electronic Engineering, Information Engineering
  • Water Engineering
  • Water Treatment

Keywords

  • secondary clarifier
  • one-dimensional model
  • mathematical modelling
  • clarification
  • Activated sludge
  • thickening
  • solids flux
  • settler
  • simulation

Status

Published

Research group

  • Partial differential equations
  • Numerical Analysis

ISBN/ISSN/Other

  • ISSN: 0273-1223