A simplified model of an activated sludge process with a plug-flow reactor

Research output: Chapter in Book/Report/Conference proceedingPaper in conference proceeding

Abstract

The analysis of a simplified activated sludge process (ASP) with one main dissolved substrate and one main particulate biomass has been conducted in steady-state conditions. The ASP is formed by a plug-flow reactor and
a settler tank. The biomass growth rate is described by a Monod function. For this process, it is not possible to get an explicit expression for the effluent substrate concentration when the process is subject to a fixed sludge age.
However, when the substrate concentration of the influent is much greater than that of the effluent, an approximate and explicit relation between them is obtained. Numerical examples with two models for the settler are presented. One model is the ideal settler, which assumes a complete
thickening of the sludge. The other model includes hindered settling and sludge compression. Numerical results show the effectiveness and the limitations of the proposed solution under these scenarios.

Details

Authors
Organisations
External organisations
  • Mälardalen University
  • Uppsala University
Research areas and keywords

Subject classification (UKÄ) – MANDATORY

  • Mathematical Analysis

Keywords

  • bioreactor, clarifier, sludge blanket, sludge age
Original languageEnglish
Title of host publicationProceedings of The 9th Eurosim Congress on Modelling and Simulation EUROSIM 2016, The 57th SIMS Conference on Simulation and Modelling SIMS 2016
Place of PublicationLinköping
PublisherLinköping University Electronic Press
Pages824-830
ISBN (Print)978-91-7685-399-3
Publication statusPublished - 2016
Publication categoryResearch
Peer-reviewedYes
EventThe 9th Eurosim Congress on Modelling and Simulation EUROSIM 2016, The 57th SIMS Conference on Simulation and Modelling SIMS 2016 - Oulu, Finland
Duration: 2016 Sep 122016 Sep 16
http://www.ep.liu.se/ecp/contents.asp?issue=142

Publication series

NameLinköping electronic conference proceedings
Publisher Linköping University Electronic Press
Volume142
ISSN (Print)1650-3686
ISSN (Electronic)1650-3740

Conference

ConferenceThe 9th Eurosim Congress on Modelling and Simulation EUROSIM 2016, The 57th SIMS Conference on Simulation and Modelling SIMS 2016
CountryFinland
CityOulu
Period2016/09/122016/09/16
Internet address

Bibliographic note

The two conferences EUROSIM 2016 and SIMS 2016 were held jointly.