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Continuity-based interfacing of models for wastewater systems described by Petersen matrices

  • P A Vanrolleghem
  • Christian Rosén
  • U Zaher
  • J Copp
  • L Benedetti
  • E Ayesa
  • Ulf Jeppsson
Publiceringsår: 2005
Språk: Engelska
Sidor: 493-500
Publikation/Tidskrift/Serie: Water Science and Technology
Volym: 52
Nummer: 1-2
Dokumenttyp: Artikel i tidskrift
Förlag: IWA Publishing


In this paper the Petersen and composition matrices that modellers are now familiar with are used as a basis to construct interfacing models between subsystems considered in wastewater treatment. Starting from continuity considerations and a set of transformation reactions between components used in the two models of the subsystems to be interfaced, a set of linear algebraic equations needs to be solved. The theoretical development is illustrated using a simplified integrated model of an activated sludge system coupled to an anaerobic digester. Continuity-guaranteed interfacing of subsystems will facilitate optimization studies of the within-the-fence process units of a wastewater treatment plant or of the integrated urban wastewater system.


  • Other Electrical Engineering, Electronic Engineering, Information Engineering
  • model interfacing
  • elemental balancing
  • mathematical modelling
  • plant-wide modelling
  • sludge digestion


  • ISSN: 0273-1223

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