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金德燦,安承丘,柳明辰 서울市立大學校 1985 論文集 Vol.19 No.-
Landfill gas is important to consider when evaluating the effect a landfill may have on the environment, because methane can explode. Thus, for the evaluating the parameters in gas generation from sanitary landfill site of municipal solid waste the generation mechanism was explained by taking into account anaerobic fermentation. Reported value of temperature of landfill site and C/N ratio of waste were in good condition for anaerobic fermentation. Chemical formula of waste of Nanjido disposal site was calculated to be C H O H S from the reported analytical data of chemical composition. By using this formula and predicted amount of waste was calculated to be 8.8x10 m. When using the predicted amount of decomposable components-garbage, paper, textile and wood-it was calculated to be 7.5x10 m. Assuming the decomposing period of those components the quantity of gas production with respect to time (year) was estimated by modifying the Sheldon-Arleta model.
유명진,장지수,안승구 대한상하수도학회 1994 상하수도학회지 Vol.9 No.1
The object of this study was to investigate the removal of LAS in water treatment using BAC. Batch tests were performed as a preliminary step for continuous flow test. Ozone of different concentrations was contacted with LAS. The more ozone was dosed, the higher LAS was removed. Isotherm tests were carried out by bottle point method. Data from isotherm tests were described by Freundlich isotherm with the coefficient, K of 0.521 and 1/n of 0.127. The continuous flow apparatus was composed of 4 units to study the effects of ozonation on biological activity of GAC. The effects of ozonation were studied by operation of Unit A.B.D with ozone concentrations of 1, 3 and 0mg/L respectively in ozone contactors and Unit C with 3mg/L CIO_2 concentration to control biological activitity in GAC column. To compare adsorption parameters among each units, the Bohard-Adams model was applied. The adsorption capacities, N of A, B, C, D GAC column were 121.3kg/m^3, 101kg/m^3, 52.6kg/m^3, 81.6kg/m^3 respectively, and the adsorption rates, K of A, B, C, D column were 19.4kg/m^3·day, 22.7kg/m^3·day, 29kg/m^3·day, 23.9kg/m^3·day respectively. The difference in the adsorption capacities and adsorption rates could be deduced by bioregeneration extent of GAC influenced with ozone does.