건설폐기물, 생활폐기물의 용출특성 분석과 BMP test를 통한 최종메탄(CH4) 및 황화수소(H2S) 수율 산정
Estimation of Ultimate Methane and Hydrogen Sulfide Yields for C&D Waste and MSW Using BMP Test
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초록
The main object of this study was to offer information about incoming waste in landfill and to evaluate biochemicalmethane and hydrogen sulfide potentials of landfill wastes. We examined brick, soil, mixed waste (C&D waste and MSW) samplesfor the study. The leaching experiments showed that BOD, COD and sulfate were determined in the range of 0~18,816 mg/kg,85~21,100 mg/kg and 160~1,205 mg/kg, respectively in 6hr extraction test. An accumulated extraction tests for 140day weredetermined BOD 226~197,219 mg/kg, COD 436~242,588 mg/kg and Sulfate 1,090~25,140 mg/kg. Also, BMP (biochemicalmethane potential) tests were carried out to examine methane and hydrogen sulfide yields for the 3 different wastes. As a result,methane yield was determined to 262.68 mL CH4/g VS of MSW and 0~17.75 mL CH4/g VS in brick, soil and C&D waste. Higherhydrogen sulfide yield was observed to 0.079mL H2S/g VS in C&D waste. This result indicate that brick and soil could be sourcesof sulfate, and higher production of hydrogen sulfide could be odor problem and inhibitor of methane production.
Abstract
The main object of this study was to offer information about incoming waste in landfill and to evaluate biochemicalmethane and hydrogen sulfide potentials of landfill wastes. We examined brick, soil, mixed waste (C&D waste and MSW) samplesfor the study. The leaching experiments showed that BOD, COD and sulfate were determined in the range of 0~18,816 mg/kg,85~21,100 mg/kg and 160~1,205 mg/kg, respectively in 6hr extraction test. An accumulated extraction tests for 140day weredetermined BOD 226~197,219 mg/kg, COD 436~242,588 mg/kg and Sulfate 1,090~25,140 mg/kg. Also, BMP (biochemicalmethane potential) tests were carried out to examine methane and hydrogen sulfide yields for the 3 different wastes. As a result,methane yield was determined to 262.68 mL CH4/g VS of MSW and 0~17.75 mL CH4/g VS in brick, soil and C&D waste. Higherhydrogen sulfide yield was observed to 0.079mL H2S/g VS in C&D waste. This result indicate that brick and soil could be sourcesof sulfate, and higher production of hydrogen sulfide could be odor problem and inhibitor of methane production.
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