매립 폐기물의 성상별 메탄발생속도상수 산정에 관한 연구

Abstract

National greenhouse gas emissions, as the United Nations Framework Convention on Climate Change Join the Party, are used reporting to UN as well as data of domestic greenhouse gas reduction policy, therefore an accurate and reliable calculation is required and the efforts for the national greenhouse gas emissions accurately to estimate in each category continuously is underway. This paper deals with component methane generation rate constant (k) and parameters that were determined through actual gas measurement. The First Order Decay model (FOD Model) based on 2006 IPCC Guidelines to calculate the value of k was used, results were as follows. First, seven landfills excluding E and F landfills, the result of calculated value of component methane generation rate constant (k) is in the approximate range of IPCC guidelines. The k value of F landfill is less than the range of the IPCC Guidelines, on the other hand E landfill showed a higher value. Second, the average values ​​of component k of nine landfills shows food 0.133yr-1, Paper 0.067yr-1, paper 0.044yr-1, rubber leather 0.043yr-1, textiles 0.066yr-1, other combustible 0.092yr-1, respectively. Compare to IPCC default values, the values of component k in 5 component except food, was similar or slightly higher. Food was lower value as 0.133yr-1 compare to IPCC default value as 0.185yr-1. Third, the nine landfills were separated by size of landfill to 3 group as district, city, metropolitan landfill, respectably. The value of component k shows the highest in district size landfill of G, H, I landfill. For the city size landfill D, E, F shows the intermediate value, and the metropolitan size landfill A, B, C shows the lowest value. Finally, the k value of mixed waste applied to weighted average method was calculated according to the IPCC guidelines. The average k value of mixed wasted was 0.077yr-1. F landfill showed the minimum value as 0.014yr-1 and E landfill was the maximum as 0.166yr-1. There are several methods to predict methane emissions from landfill, lysimeter operation in laboratory scale, test landfill cell operation, research of half-life after landfill excavation, etc. But these require more cost and time to perform so this study could have significant implications.