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 (300Kb)
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| Masaru Tanaka | |
| Director | |
| Department of Waste Management Engineering, | |
| The Institute of Public Health | |
| Shirokanedai 4-6-1, Minato-ku, Tokyo, 108 JAPAN | |
| Phone +81-3-3441-7111(Ext. 373), Fax +81-3-3446-4314 | |
| E-mail: maxta@iph.go.jp |
14,957,000 Yen
(FY 1999; 7,062,000 Yen)
State and control methods of CH4 and N2O emission from solid waste disposal facilities were studied by means of in situ observation and published data analysis. At night soil treatment plants, the N2O emission was greatly depended by the ORP in the single type nitrification-dinifitrification reactor. Therefore, it is effective for N2O reduction to control the ORP range and average during nitrification-dinifitrification cycles by means of air supply to reactor. The open-path type FTIR successfully detected the surface CH4 concentration above atmosphere level at a landfill site. It is shown that the water content of landfill cover soil affect methane oxidation in soil. We discussed about the methodology for estimating the degradable organic carbon in landfilled waste from national waste statistics in Japan. We noticed that degradable landfilled waste would be significantly over-/underestimated by assumption in sorts of waste and treatment. We consider that it can apply to the in situ monitoring of CH4 emission from landfill sites. From waste management statistics and time-depended gasification model, national CH4 emission from Korean and Japanese landfill sites were estimated. Since the rate of landfilling of municipal solid waste in Korea is higher than that of Japan, the CH4 emission form landfill sites in Korea would exceed that of Japan at 1990.
Methane, Nitrous Oxide, Solid Waste Disposal, Night Soil Treatment, Control Method, Estimation of National Emission