研究成果報告書 E94B0210.HTM


	(376Kb)

[B-2.1 A Quantitative Study on Greenhouse Gases Emitted from Solid Waste Disposal Facilities]

[Contact Person]

Masaru Tanaka
Director, Department of Waste Management Engineering
The Institute of Public Health
4-6-1 Shiroganedai, Minato-ku, Tokyo 108 Japan
Phone +81-3-3441-7111(Ext.373), Fax +81-3-3446-4314
E-mail sasano@nies.go.jp

[Total Budget for FY1990-1994]

24,318,000 Yen (FY1994 6,319,000 Yen)

[Abstract]

In order to estimate the amount of greenhouse gases from waste treatment and disposal facilities in Japan and the world, the emission behaviors and fluxes of methane(CH₄) and nitrous oxide(N₂O) were observed at municipal solid waste(MSW) incineration plants, night soil treatment plants, Gappei-shori Johkasous(domestic waste water plants) and MSW landfill sites. The emission factor(EF), amount of emission gas per amount of waste, of CH₄ in MSW incinerators and night soil treatment plants were ranged 29.7-742 g-CH₄ ton^-1 and 4.0-6.0 g-CH₄・kL^-1, respectively, depending on the type of facilities. The EF of N₂O of them were also determined as 115-144 g-N₂O・ton^-1 and <0.01-630 g-N₂O・kL^-1, respectively. In order to predict amount of CH₄ emission from MSW landfill sites, the gasification models and published data were used. Estimated CH₄ emissions in 1990 were 130-520 Gg-CH₄・yr^-1 in Japan, and 54 Tg-CH₄ ・yr^-1 in the world. In the current conclusion, total yearly emissions of CH₄ and N₂O from waste treatment and disposal facilities in Japan was estimated as 390-770 Gg-CH₄・yr^-1(include emission from landfill)and 4.7-5.3 Gg-N₂O・yr^-1(not include emission from landfill), respectively, in 1990.

[Key Words]

Global Warming, Methane, Nitrous Oxide, Emission Analysis, Solid Waste, Disposal Facilities