KMID : 1024520030120040461
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Journal of the Environmental Sciences 2003 Volume.12 No. 4 p.461 ~ p.467
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The Physico-chemical Characteristics of Municipal Solid Wastes from Four Different Sources in Daegu City
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Noh Sook-Hyun
Lee Dong-Hoon Choi Choong-Ryeol Park Man Park Byoung-Yoon Choi Jyung
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Abstract
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This study was conducted to provide the basic information to know reasonable method f3r the removal and treatment of municipal solid wastes(MSWs). MSWs four different sources(apartment residence, commerce, office/industry) in Daegu city were collected, and bulk density, physical composition, moisture, combustible, ash, elements and heating values were investigated. The values of bulk density were at range of 0.30¡0.41ton/m. The percentages of foods, papers, vinyls/plastics, textiles, rubbers/leathers, metals and glasses/ceramics of wet muncipal solid wastes from three sources except office/industry were at range of 27.3¡46.4%, 21.2¡38.4%, 10.3¡11.9%, 3.8¡5.2%, 0.5¡1.7%, 6.9¡8.7% and 1.9¡2.6% respectively. The percentages of papers, foods, vinyls/plastics, textiles, rubbers/leathers, metals and glasses/ceramics of dry muncipal solid wastes from three sources except office/industry were at range of 21.1¡40.4%, 14.2¡30.1%, 15.2¡17.8%, 4.0¡6.0%, 0.9¡2.8%, 12.2¡14.1% and 3.1¡3.7£¥ respectively. The moisture contents of foods, woods, textiles and papers in wastes were at range of 65.7¡76.2%, 34.6¡50.0%, 22.2¡44.8 and 30.6¡44.4% respectively. The carbon contents of vinyls/plastics, rubbers/leathers, textiles, woods, papers and foods in wastes were at range of 75.88¡79.87%, 58.24¡70.74%, 45.23¡51.63%, 42.29¡45.58%, 40.19¡48.4% and 25.86¡36.25% respectively. The low heating values of foods, papers, woods, textiles, rubbers/leathers and vinyls/plastics by Dulong¡¯s law were at range of 178¡1,353kcal/kg, 770¡1,660kcal/kg, 995¡1,629kcal/kg, 2,133¡2,432kca1/kg, 4,200¡7,275 kcal/kg and 6,384¡8,722kcal/kg respectively, and the high heating values of them were at range of 782¡2,056 kcal/kg, 2,459¡3,314kca1/kg, 3,056¡3,592kcal/kg, 4,381¡5,087kca1/kg, 5,005¡8,066kca1/kg and 10,032¡10,739 kcal/kg respectively.
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KEYWORD
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Municipal solid wastes, Bulk density, Heating values
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