Comparison of on-site and upstream greenhouse gas emissions from Canadian municipal wastewater treatment facilities
- 1 September 2006
- journal article
- research article
- Published by Thomas Telford Ltd. in Journal of Environmental Engineering and Science
- Vol. 5 (5), 405-415
- https://doi.org/10.1139/s06-009
Abstract
Canada's ratification of the Kyoto Protocol has focused attention on the importance of accurately estimating emissions of greenhouse gases (GHG) from all sectors. An inventory of emissions of greenhouse gases from Canadian municipal wastewater treatment plants was prepared using a life-cycle approach. Both on-site emissions at the treatment facility due to the biological processes used and fossil fuels consumed for energy and heat and upstream emissions related to off-site production and transmission of fuels and the off-site production of electricity for the plant were included. For the year 2000, the on-site methane (CH4) emission rate from Canadian municipal wastewater treatment facilities was estimated at 1600 Mg/year. The total on-site emission rate of carbon dioxide (CO2) was estimated at 669 100 Mg/year, but the estimated total CO2 equivalent emissions rose to 1 048 500 Mg/year once upstream emissions were included. Clear abatement strategies related to more efficient energy use and energy recovery can be identified once accurate GHG emissions inventories are in place.Keywords
This publication has 11 references indexed in Scilit:
- A Rational Procedure for Estimation of Greenhouse-Gas Emissions from Municipal Wastewater Treatment PlantsWater Environment Research, 2005
- Experimental Determination of Energy Content of Unknown Organics in Municipal Wastewater StreamsJournal of Energy Engineering, 2004
- An LCA of alternative wastewater sludge treatment scenariosResources, Conservation and Recycling, 2002
- Study of the inter-relationship between water use and energy conservation for a buildingEnergy and Buildings, 2002
- Nitrous Oxide Emissions and the Anthropogenic Nitrogen in Wastewater and Solid WasteJournal of Environmental Engineering, 2002
- Nuclear power and the environmentApplied Energy, 2000
- Environmental comparison metrics for life cycle impact assessment and process designEnvironmental Progress, 2000
- Life cycle assessment of municipal waste water systemsThe International Journal of Life Cycle Assessment, 1998
- The Life‐Cycle Analysis of Small‐Scale Sewage‐Treatment ProcessesWater and Environment Journal, 1995
- Quantifying and comparing fuel-cycle greenhouse-gas emissions: Coal, oil and natural gas consumptionEnergy Policy, 1990