Waste to energy: investigation, technologies and evaluation system
DOI:
https://doi.org/10.15626/Eco-Tech.2007.027Keywords:
Waste-to-energy (WTE) process; Municipal solid wastes; Refused derived fuel; Life cycle assessment; Cost benefit analysis.Abstract
Supported by the on going project on "Sustainable Solid Waste Landfill Management in Asia" under the Asian Regional Research Programme on Environmental Technology funded by Swedish International Development Cooperation Agency and Coordinated by Asian Institute of Technology, Thailand, a combined waste-to-energy (WTE) process has been developed in China. In this research two fresh and five aged municipal solid wastes (MSW) samples were investigated and characterized. Based on the analysis of results, suggestions were proposed for the proper WTE system with aged MSW from dumpsites and landfills and fresh MSW considered together. The WTE process included hierarchy of recycling plastics from fresh MSW as raw material and recycling combustibles from aged MSW as RDF. To recycle the plastics from fresh MSW, separation and purification system have been set up and their energy consumption was counted.
Two analysis tools including life cycle assessment (LCA) and cost benefit analysis (CBA) have been adopted for the WTE system evaluation. Based on the necessary data collected during investigation process, LCA was carried out for RDF production from aged MSW and utilization in fresh MSW incinerator; and CBA was performed for plastics recycling from fresh MSW; good results have been obtained from those evaluations suggested the proposed WTE processes are promising.
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References
Gordon McKay, 2002. Dioxin characterisation, formation and m1mm1sation during municipal solid waste (MSW) incineration: review. Chemical Engineering Journal, 86, 343-368.
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Zhou., G., Chen, D., Cui, W., 2007.Comparison between fresh and aged municipal solid wastes and their recycling methods in China; in Proceeding of Sardinia 2007, Eleventh International Waste Management and Landfill Symposium, 1-5 Oct., Calgiari, Italy.
Chen, D., Zhai, X., Zhou, G., 2007. Life cycle assessment ofRDF production from aged MSW and its utilization system, in Proceedings of the international conference on "Sustainable solid waste management", Sept. 5-7, Chennai, India, 406-414.
Kirkeby, J.T., Bhander, G.S., Birgisdottir, H., Hansen, T.L, Hauschild, M., Christensen, T.H., 2006. Environmental assessment of solid waste systems and technologies: EASEW ASTE. Waste Management & Research, 24, 3-15. https://doi.org/10.1177/0734242X06062580
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Copyright (c) 2007 Zhou Gongming, Zhai Xulu, Chen Dezhen
This work is licensed under a Creative Commons Attribution 4.0 International License.
