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Eco‐efficiency of water and wastewater management in food production: A case study from a large dairy in Denmark

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  • Julie Skrydstrup
  • Sille Lyster Larsen
  • Martin Rygaard

Abstract

Rising water demands and pressures on water resources call for water management in industrial production. An eco‐efficiency framework may provide justification for water consumption and treatment by combining environmental and economic dimensions in a life cycle perspective. We used principles of value added and value chain assessment (VCA) in the life‐cycle system boundaries for a consistent assessment of eco‐efficiency. The method was demonstrated for a membrane bioreactor‐based, decentralized wastewater treatment and reuse in a dairy. The LCA results showed that decentralized wastewater treatment and reuse in the dairy will improve the aquatic environment by 80% (freshwater) and 51% (marine water), but increase the negative impact on climate change by 27% compared to conventional wastewater treatment. The VCA revealed that the decentralized alternatives would increase the value added by 1.3–1.4 €/m3 wastewater in the dairy, but also incur a value loss of 1.4–1.9 €/m3 for associated stakeholders such as the centralized wastewater treatment plant. The case study revealed the critical nature of a well‐defined system boundary that includes impacts along the entire value chain and exposed pros and cons for decision‐makers at both the system level and individual stakeholder level.

Suggested Citation

  • Julie Skrydstrup & Sille Lyster Larsen & Martin Rygaard, 2020. "Eco‐efficiency of water and wastewater management in food production: A case study from a large dairy in Denmark," Journal of Industrial Ecology, Yale University, vol. 24(5), pages 1101-1112, October.
    • Handle: RePEc:bla:inecol:v:24:y:2020:i:5:p:1101-1112
    DOI: 10.1111/jiec.13011
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    Cited by:

    1. Cristina Pavanello & Marcello Franchini & Stefano Bovolenta & Elisa Marraccini & Mirco Corazzin, 2024. "Sustainability Indicators for Dairy Cattle Farms in European Union Countries: A Systematic Literature Review," Sustainability, MDPI, vol. 16(10), pages 1-25, May.

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