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Assessment of wastewater treatment technologies: life cycle approach

DSpace at IIT Bombay

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Title Assessment of wastewater treatment technologies: life cycle approach
 
Creator KALBAR, PP
KARMAKAR, S
ASOLEKAR, SR
 
Subject activated sludge process
constructed wetlands
life cycle assessment
sequencing batch reactor
up-flow anaerobic sludge blanket reactorfacultative aerobic lagoon
wastewater treatment plant
SEWAGE-TREATMENT PROCESSES
ENVIRONMENTAL PERFORMANCE
TREATMENT PLANTS
SCALE
INDIA
EMISSIONS
OPTIONS
IMPACT
 
Description Four municipal wastewater treatment plants (WWTPs) in India based on different technologies are compared by conducting Life Cycle Assessment (LCA) using field data. CML 2 baseline 2000 methodology is adopted in which eight impact categories are considered. SBRs ranked highest in energy consumption and global warming potential (GWP) but also produced the best effluent with respect to organics and nutrients. Constructed wetlands have negligible energy consumption and negative GWP because of carbon sequestration in the macrophytes. Emissions associated with electricity production required to operate the WWTPs, emissions to water from treated effluent and heavy metal emissions from waste sludge applied to land are identified as main contributors for overall environmental impacts of WWTPs. This comparison of technologies suggests that results from LCA can be used as indicators in a multicriteria decision-making framework along with other sustainability indicators.
 
Publisher WILEY-BLACKWELL
 
Date 2014-10-16T07:10:42Z
2014-10-16T07:10:42Z
2013
 
Type Article
 
Identifier WATER AND ENVIRONMENT JOURNAL, 27(2)261-268
http://dx.doi.org/10.1111/wej.12006
http://dspace.library.iitb.ac.in/jspui/handle/100/15518
 
Language en