Survey of carbonization facilities for municipal solid waste treatment in Japan |
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| Authors: | In-Hee Hwang Katsuya Kawamoto |
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| Institution: | 1. Department of Environmental Engineering, Graduate School of Engineering, Kyoto University, Kyotodaigakukatsura, Nishikyo-ku, Kyoto 615-8540, Japan;2. Department of Global Ecology, Graduate School of Global Environmental Studies, Kyoto University, Kyotodaigakukatsura, Nishikyo-ku, Kyoto 615-8540, Japan;1. National Institute for Environmental Studies, 16-2 Onogawa, Tsukuba, Ibaraki 305-8506, Japan;2. Tokyo Metropolitan Research Institute for Environmental Protection, 1-7-5 Shinsuna, Koto-ku, Tokyo 136-0075, Japan;3. Bureau of Environment, Tokyo Metropolitan Government, 2-8-1 Nishi-shinjuku, Shinjuku-ku, Tokyo 163-8001, Japan;1. University of Valencia and INTECO Joint Research Unit, Spain;2. University of Zaragoza, Spain |
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| Abstract: | The operations of carbonization facilities for municipal solid waste treatment in Japan were examined. Input waste, system processes, material flows, quality of char and its utilization, fuel and chemical consumption, control of facility emissions, and trouble areas in facility operation were investigated and analyzed. Although carbonization is a technically available thermochemical conversion method for municipal solid waste treatment, problems of energy efficiency and char utilization must be solved for carbonization to be competitive. Possible solutions include (1) optimizing the composition of input waste, treatment scale, organization of unit processes, operational methods, and quality and yield of char on the basis of analysis and feedback of long-term operating data of present operating facilities and (2) securing stable char demands by linking with local industries such as thermal electric power companies, iron manufacturing plants, and cement production plants. |
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