Volume 94, Issue 1 e1661
RESEARCH ARTICLE

Life-cycle assessment of full-scale membrane bioreactor and tertiary treatment technologies in the fruit processing industry

Tong Chu

Tong Chu

School of Engineering, University of Guelph, Guelph, Ontario, Canada

Contribution: Formal analysis (lead), ​Investigation (lead), Methodology (equal)

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Bassim E. Abbassi

Bassim E. Abbassi

School of Engineering, University of Guelph, Guelph, Ontario, Canada

Contribution: Conceptualization (equal), Data curation (equal), Formal analysis (equal), Funding acquisition (supporting), ​Investigation (lead), Methodology (equal), Project administration (supporting), Resources (supporting), Software (lead), Supervision (supporting)

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Richard G. Zytner

Corresponding Author

Richard G. Zytner

School of Engineering, University of Guelph, Guelph, Ontario, Canada

Correspondence

Richard G. Zytner, School of Engineering, University of Guelph, 50 Stone Rd. E., Guelph, ON N1H 8C7, Canada.

Email: [email protected]

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First published: 15 November 2021
Citations: 2

Abstract

A life-cycle assessment (LCA) study was completed to assess the environmental impacts of an on-site wastewater treatment system in the fresh-cut fruit processing industry consisting of a membrane bioreactor (MBR), followed by reverse osmosis (RO) and ultraviolet (UV) disinfection. The system boundaries comprised raw materials extraction and processing, transportation, construction, operation, and waste disposal. SimaPro 8.0.4.26 was used as the software tool, supported by two impact assessment methods (ReCiPe v1.11 and TRACI v2.1). Analysis showed that the treatment capacity of the MBR and tertiary technologies contributed the least damage to the ecosystem when compared with the other three scenarios and can provide water for reuse. Treating wastewater in municipal wastewater treatment plants (WWTPs) mitigated eutrophication like the MBR system but resulted in more environmental impacts from climate change and human health when compared with the on-site treatment system. Findings will be informative to stakeholders in the fresh-cut agri-food sector seeking input into selecting the appropriate treatment approach, with water reuse a goal.

Practitioner Points

  • Life-cycle analysis was completed on a fruit processing facility using MBR + RO + UV.
  • On site treatment with MBR + RO UV provides least amount of environmental impact.
  • Use of MBR + RO + UV treatment on fruit wastewater allows for water reuse.
  • ReCiPe v1.11 and TRACI v2.1 give similar LCA results, with TRACI recommended for North American analysis.

Graphical Abstract

Life-cycle assessment (LCA) study was completed to analyze the environmental impacts of four treatment options to treat wastewater in a fruit processing industry. The best environmental option was MBR, followed by RO and UV, which allows for water recycling. Treating water at a municipal wastewater treatment plant mitigated eutrophication but resulted in more environmental impacts with on-site treatment systems.

DATA AVAILABILITY STATEMENT

All the data used in this analysis will be available from The Atrium, University of Guelph (Atrium, 2021).

The full text of this article hosted at iucr.org is unavailable due to technical difficulties.