생활쓰레기 매립지에 설치한 파일롯 규모 바이오윈도우에 의한 하절기 악취 및 메탄 제거 특성 = Mitigation of Odor and Methane Using a Pilot-Scale Biowindow in a Sanitary Landfill During Summer

다국어 초록 (Multilingual Abstract)

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다국어 초록 (Multilingual Abstract)

This study developed and tested a pilot-scale biowindow for simultaneous removal of odor and methane from landfills. The test was conducted in a sanitary landfill site during the summer season (July and August). The average temperature inside the biowindow was 5캜 higher than the average air temperature, rising to 37–48oC when the outdoor temperature was very hot. The complex odor removal rate (based on the dilution-to-threshold value) in the biowindow during the summer was 91.3- 98.8% (with an average of 96.2±4.2%). The average concentration of hydrogen sulfide was 3,024.9±805.8 ppb, and its concentration was found to be the highest among 22 odorous compounds. The removal efficiencies of hydrogen sulfide and methyl mercaptan were 89.1% and 83.2%, respectively. The removal of dimethyl sulfide was 17.7%, and no ammonia removal was observed. Additionally, the removal efficiencies of toluene and xylene were 85.2% and 72.5%, respectively. Although the initial methane removal was low (24.9%), the methane removal performance improved to 53.7–75.6% after the 11th day of operation. These results demonstrate that the odor and methane removal performance of the pilot-scale biowindow was relatively stable even when the internal temperature of the biowindow rose above 40oC in the summer. Since the main microorganisms responsible for decomposing odor and methane are replaced by thermotolerant or thermophilic microorganisms, and high community diversity is maintained, odor and methane in the biowindow could be stably removed even under high-temperature conditions.

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