Contribution of water and wastewater infrastructures to urban energy metabolism and greenhouse gas emissions in cities in India

Leslie A. Miller, Anu Ramaswami, Ravi Ranjan

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    27 Scopus citations

    Abstract

    This is a first analysis of end-use energy intensity (EUEI) and greenhouse gas (GHG) emissions in water and wastewater (W/WW) sectors in India, and it examines their contribution to community-wide energy use and GHG emissions in cities in India. EUEI and related GHG emissions for W/WW infrastructures in Indian cities were analyzed and compared with data for cities in the United States. Data gathered by ICLEI-South Asia, Government of India, and the University of Colorado Denver were used to conduct this analysis. W/WW infrastructures were found to contribute 3-16% of community-wide electricity use and GHG emissions for 16 cities in India; for another 23 cities, the proportion was less than 3%. EUEI for drinking water supply and wastewater treatment averaged 0.3±0.2 W·h/L(n=7) and 0.1±0.05 W·h/L(n=5), respectively. EUEI for drinking water provision was more than double that for wastewater treatment, the reverse of typical cities in Colorado, likely a result of poorer source water quality in India. In general, although the sample size of Indian W/WW plants is small, EUEI in India appears to be much smaller than in the United States for both water and wastewater sectors based on this first review of quantitative data.

    Original languageEnglish (US)
    Pages (from-to)738-745
    Number of pages8
    JournalJournal of Environmental Engineering (United States)
    Volume139
    Issue number5
    DOIs
    StatePublished - May 1 2013

    Keywords

    • Developing cities
    • End-use energy intensity
    • Greenhouse gas
    • Urban metabolism
    • Wastewater
    • Water infrastructure

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