Key control handles in integrated urban wastewater systems for improving receiving water quality

Ramesh Saagi*, Stefan Kroll, Xavier Flores-Alsina, Krist V. Gernaey, Ulf Jeppsson

*Corresponding author for this work

Research output: Contribution to journalJournal articleResearchpeer-review

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Abstract

There is an increasing interest in modelling and control of integrated urban wastewater systems (UWS). Nevertheless, given the multiple interactions between the sub-systems – catchment, sewer system, wastewater treatment plant (WWTP) and receiving water system – the selection of effective control handles for improving receiving water quality is a major challenge. In this paper, a systematic study to identify the most important control handles in an UWS is presented. The Benchmark Simulation Model for Urban Wastewater Systems (BSM-UWS) is selected as a virtual case-study. Morris screening is used to perform global sensitivity analysis. Results indicate that, for the BSM-UWS layout, while river dissolved oxygen quality (Texc,DO) is influenced by multiple control handles both in the sewer system and WWTP, river un-ionized ammonia quality (Texc,NH3) is mainly influenced by WWTP control handles. The study highlights the need to perform simulations for at least 1 year when determining key control handles for UWS.
Original languageEnglish
JournalUrban Water Journal
Volume15
Issue number8
Pages (from-to)790-800
Number of pages12
ISSN1573-062X
DOIs
Publication statusPublished - 2018

Keywords

  • BSM-UWS
  • Integrated control strategies
  • Global sensitivity analysis
  • Urban wastewater systems

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