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KMID : 1171820080230030039
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Journal of Environmental and Sanitary Engineering
2008 Volume.23 No. 3 p.39 ~ p.46
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Estimate of CH₄ Emission Factors in Municipal Wastewater Treatment Plants
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Yang Hyung-jae
Park Jung-Min
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Abstract
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In order to study the estimate of CH₄ emission factors in the municipal wastewater treatment plants, the active sludge process, 5-stage process, Denipho process, and SBR process were investigated. When active sludge process, 5-stage process, and Denipho process were used in wastewater treatment plant, the CH₄ emission factors were 2.88, 1.61, and 0.57 g-CH₄/㎏-BOD, respectively. On the other hand, in the case of SBR process, it was 4.14 g-CH₄,/㎏-BOD. These results indicate that SBR process was effective for CH₄ emission in municipal wastewater treatment plants. Using the above processes, the methane emission factor and amount of waste water sludge were 4.78㎥/t and 12,204,506㎥/yr, respectively. The remove of BOD was a range of 93.91 ~ 98.63%.
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KEYWORD
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CH₄, emission factor, sludge, wastewater treatment
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