Life cycle impact analysis of tertiary treatment alternatives to treat secondary municipal wastewater for reuse in cooling systems

Ranjani Theregowda, Radisav Vidic, David A. Dzombak, Amy E. Landis

    Research output: Contribution to journalArticle

    6 Citations (Scopus)

    Abstract

    Life cycle impacts have been evaluated to compare and assess six tertiary treatment alternatives for secondary treated municipal wastewater for reuse in thermo-electric power plant cooling systems. Impacts during construction and operation of tertiary treatment processes using databases and characterization tools embedded in the process-based life cycle assessment (LCA) software, Simapro v7.3, and the Carnegie Mellon economic input-output LCA (EIO-LCA) 2002 model were estimated. Infrastructure cost estimates from life cycle cost analysis were used as inputs to the EIO-LCA model. Inputs to the process-based analysis included chemical doses added during and after tertiary treatment, approximate transport distance of chemicals from producer to treatment site, and energy generation to operate major equipment during treatment. Impacts considered included global warming potential (in kg CO2 eq.), acidification (in kg SO2 eq.), eutrophication (in kg N eq.) and ecotoxicity (in kg 2,4-D eq.) - estimated using TRACI model characterization factors. The environmental impacts analysis showed that manufacture of chemicals for tertiary treatment and conditioning, and electric power generation were the main processes that contribute to environmental impacts. Thus, alternatives with no or less tertiary treatment are recommended from an environmental impact perspective for reuse of secondary treated wastewater in cooling systems.

    Original languageEnglish (US)
    Pages (from-to)178-187
    Number of pages10
    JournalEnvironmental Progress and Sustainable Energy
    Volume34
    Issue number1
    DOIs
    StatePublished - Jan 1 2015

    Fingerprint

    Cooling systems
    Life cycle
    Wastewater
    life cycle
    cooling
    Environmental impact
    wastewater
    environmental impact
    Thermoelectric power plants
    Electric power generation
    2,4-Dichlorophenoxyacetic Acid
    Economics
    Eutrophication
    Acidification
    Global warming
    cost analysis
    2,4 dichlorophenoxyacetic acid
    Costs
    economics
    power generation

    Keywords

    • Hybrid LCA
    • Sustainability
    • Thermoelectric power plant
    • Treatment chemicals
    • Wastewater reuse

    ASJC Scopus subject areas

    • Environmental Chemistry
    • Environmental Engineering
    • Waste Management and Disposal
    • Water Science and Technology
    • Environmental Science(all)
    • Renewable Energy, Sustainability and the Environment
    • Chemical Engineering(all)

    Cite this

    Life cycle impact analysis of tertiary treatment alternatives to treat secondary municipal wastewater for reuse in cooling systems. / Theregowda, Ranjani; Vidic, Radisav; Dzombak, David A.; Landis, Amy E.

    In: Environmental Progress and Sustainable Energy, Vol. 34, No. 1, 01.01.2015, p. 178-187.

    Research output: Contribution to journalArticle

    Theregowda, Ranjani ; Vidic, Radisav ; Dzombak, David A. ; Landis, Amy E. / Life cycle impact analysis of tertiary treatment alternatives to treat secondary municipal wastewater for reuse in cooling systems. In: Environmental Progress and Sustainable Energy. 2015 ; Vol. 34, No. 1. pp. 178-187.
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