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Evaluating Environmental Performance of Operational Strategies at Wastewater Treatment Plants
RISE - Research Institutes of Sweden. Lund University, Sweden. (Urban Water Management)ORCID-id: 0000-0003-1547-8413
IVL Swedish Environmental Research Institute, Sweden.
IVL Swedish Environmental Research Institute, Sweden.
Lund University, Sweden.
2016 (engelsk)Inngår i: IWA World Water Congress and Exhibition 2016 (IWA 2016), 2016Konferansepaper, Publicerat paper (Fagfellevurdert)
Abstract [en]

Multi-objectiveperformance assessment of operational strategies at wastewater treatment plants(WWTPs) is a challenging task. The holistic perspective applied to evaluationof modern WWTPs, including not only effluent quality but also, resourceefficiency and recovery, global environmental impact and operational cost callsfor assessment methods including both on and off-site effects. In this study amethod combining dynamic process models – including greenhouse gas (GHG)emissions and detailed energy models – and life cycle assessment was developed.The method is applied and calibrated to a large Swedish WWTP. In a performanceassessment study changing the operational strategy to chemically enhanced primarytreatment was performed and evaluated. The results show that the primaryobjectives, to enhance bio-methane production and reduce greenhouse gasemissions were reached. Bio-methane production increased by 14% and the globalwarming potential (GWP) decreased by 28%. However, the LCA revealed that due toincreased consumption of precipitation chemicals and additional carbon sourcedosing (methanol) the abiotic depletion of elements and fossil re-sourcesincreased by 77 and 305%, respectively. The results emphasise the importance ofusing plant-wide mechanistic models and life cycle analysis to capture thedynamics of the plant – e.g. dynamics of GHG emissions – and the potentialglobal environmental impact.

sted, utgiver, år, opplag, sider
2016.
Emneord [en]
wastewater treatment, process control, mathematical modelling, LCA, performance assessment
HSV kategori
Identifikatorer
URN: urn:nbn:se:ri:diva-30009OAI: oai:DiVA.org:ri-30009DiVA, id: diva2:1117516
Konferanse
IWA 10th World Water Congress and Exhibition (IWA 2016), October 9-13, 2016, Brisbane, Australia
Tilgjengelig fra: 2017-06-29 Laget: 2017-06-29 Sist oppdatert: 2023-05-25bibliografisk kontrollert

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RefereraExporteraLink to record
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  • ieee
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  • de-DE
  • en-GB
  • en-US
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Utmatningsformat
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