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Environmental assessment of supercritical water oxidation of sewage sludge [An article from: Resources, Conservation & Recycling]
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Environmental assessment of supercritical water oxidation of sewage sludge [An article from: Resources, Conservation & Recycling] | Digital

by M. Svanstrom (Author), M. Froling (Author), M. Modell (Author), W.A. Peters (Author)

List Price: $8.95  
Available:  Available for download now

Binding:  Digital
Publisher:  Elsevier
Publication Date:  July 01, 2004


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Product Description
This digital document is a journal article from Resources, Conservation & Recycling, published by Elsevier in 2004. The article is delivered in HTML format and is available in your Amazon.com Media Library immediately after purchase. You can view it with any web browser.Description: Environmental aspects of using supercritical water oxidation (SCWO) to treat sewage sludge were studied using a life cycle assessment (LCA) methodology. The system studied is the first commercial scale SCWO plant for sewage sludge in the world, treating sludge from the municipal wastewater treatment facility in Harlingen, TX, USA. The environmental impacts were evaluated using three specific environmental attributes: global warming potential (GWP), photo-oxidant creation potential (POCP) and resource depletion; as well as two single point indicators: EPS2000 and EcoIndicator99. The LCA results show that for the described process, gas-fired preheating of the sludge is the major contributor to environmental impacts, and emissions from generating electricity for pumping and for oxygen production are also important. Overall, SCWO processing of undigested sewage sludge is an environmentally attractive technology, particularly when heat is recovered from the process. Energy-conserving measures and recovery of excess oxygen from the SCWO process should be considered for improving the sustainability potential.
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