IVL Swedish Environmental Research Institute

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LCA analysis of different WWTP processes
IVL Swedish Environmental Research Institute.
IVL Swedish Environmental Research Institute.
IVL Swedish Environmental Research Institute.
IVL Swedish Environmental Research Institute.
2020 (English)Report (Other academic)
Abstract [en]

Wastewater treatment plants have the main objective to treat the incoming wastewater to meet specified discharge criteria. Different process configurations requiring different amount of resources such as energy and chemicals. The selection of process configuration can also impact the amount of energy produced from digestion of the sludge to biogas. In this study we compare the environmental impact of treating wastewater to two different levels of effluent quality (total phosphorus concentration, 1 mg P/L and 0.3 mg P/L) in three different process configurations using dynamic process modelling and life cycle assessment (LCA). The different processes studied were Pre-precipitation, Simultaneous precipitation and Biological phosphorous removal. Automatic process control in the models was used to achieve similar treatment results for the different processes. Operational data in the form of direct emissions to water and air, energy consumption, chemical consumption, production of sludge and biogas were generated by dynamic process simulations. The operational data were used in the LCA to calculate the environmental impact in five different categories, where global warming potential (GWP) also known as carbon footprint, was one. The results show that pre-precipitation gives the lowest GWP per m3 of treated water for both effluent standards. Bio-P gives the highest GWP.

Abstract [sv]

Den här rapporten finns endast på engelska. Svensk sammanfattning finns i rapporten.

Place, publisher, year, edition, pages
IVL Svenska Miljöinstitutet, 2020.
Series
B report ; B2400
Keywords [sv]
Process modelling, process-modellering, Digital Twin, Digital Tvilling, LCA, life cycle assessment, Coagulants, fällningskemikalier, waste-water treatment, WWTP, Avlopps-vattenrening
Identifiers
URN: urn:nbn:se:ivl:diva-2779ISBN: 978-91-7883-231-6 OAI: oai:DiVA.org:ivl-2779DiVA, id: diva2:1552225
Available from: 2021-05-05 Created: 2021-05-05 Last updated: 2021-05-05Bibliographically approved

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Rahmberg, MagnusLovisa Andersson, SofiaU Lindblom, ErikJohansson, Kristin
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CiteExportLink to record
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Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf