| Influence of oxygen flow rate and compost addition on reduction of organic matter in aerated waste layer containing mainly incineration residue |
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| 作者姓名： | Hiroshi Asakur Kei Nakagaw Kazuto Endo Masato Yama Yusaku Ono Yoshiro Ono |
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| 作者单位： | Nagasaki University, 1-14 Bunkyo-machi, Nagasaki 852-8521, Japan;Nagasaki University, 1-14 Bunkyo-machi, Nagasaki 852-8521, Japan;National Institute for Environmental Studies, Onogawa 16-2, Tsukuba, Ibaraki 305-8506, Japan;National Institute for Environmental Studies, Onogawa 16-2, Tsukuba, Ibaraki 305-8506, Japan;Nippon Institute of Technology, 4-1 Gakuendai, Miyashiro-machi, Minamisaitama-gun, Saitama 345-8501, Japan;Kyoto Institute of Technology, Matsugasaki, Sakyo-ku, Kyoto 606-8585, Japan |
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| 基金项目： | This study was conducted under the project "Guarantee of Safety and Security for Toxic Wastes in Landfills (FY 2004 to 2006)" supported by the Special Coordination Funds for Promoting Science and Technology of the Ministry of Education, Culture, Sports, Science and Technology, Japan. |
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| 摘 要： | Landfilling municipal solid waste incineration (MSWI) residue alkalizes the waste layer, causing a subsequent decrease in microbial activity and a delay in the decomposition of organic matter. In this study, efficiencies of neutralization of the leachate and organic matter decomposition in the waste layer in a column filled with MSWI residue using aeration and compost addition were evaluated.Total organic carbon (TOC) reduction in the waste layer is large at high oxygen flow rate (OFR). To effectively accelerate TOC reduction in the waste layer to which compost was added, a high OFR exceeding that by natural ventilation was required. At day 65, the pH of the leachate when OFR was above 102mol-O2/(day·m3) was lower than that when OFR was below 101mol-O2/(day·m3). At the same OFR, the pH of waste sample was lower than that of waste sample with compost. Although leachate neutralization could be affected by compost addition, TOC reduction in the waste layer became rather small. It is possible that humic substances in compost prevent the decomposition of TOC in MSWI residue.
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| 关 键 词： | waste landfill aeration neutralization acceleration of stabilization |
| 收稿时间： | 22 March 2012 |
| 修稿时间： | 7/3/2012 12:00:00 AM |
Influence of oxygen flow rate and compost addition on reduction of organic matter in aerated waste layer containing mainly incineration residue |
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| Hiroshi Asakur,Kei Nakagaw,Kazuto Endo,Masato Yama,Yusaku Ono,Yoshiro Ono.Influence of oxygen flow rate and compost addition on reduction of organic matter in aerated waste layer containing mainly incineration residue[J].Journal of Environmental Sciences,2013,25(1):53-58. |
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| Authors: | Hiroshi Asakur Kei Nakagaw Kazuto Endo Masato Yamad Yusaku Ono and Yoshiro Ono |
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| Institution: | Nagasaki University, 1-14 Bunkyo-machi, Nagasaki 852-8521, Japan;Nagasaki University, 1-14 Bunkyo-machi, Nagasaki 852-8521, Japan;National Institute for Environmental Studies, Onogawa 16-2, Tsukuba, Ibaraki 305-8506, Japan;National Institute for Environmental Studies, Onogawa 16-2, Tsukuba, Ibaraki 305-8506, Japan;Nippon Institute of Technology, 4-1 Gakuendai, Miyashiro-machi, Minamisaitama-gun, Saitama 345-8501, Japan;Kyoto Institute of Technology, Matsugasaki, Sakyo-ku, Kyoto 606-8585, Japan |
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| Abstract: | Landfilling municipal solid waste incineration (MSWI) residue alkalizes the waste layer, causing a subsequent decrease in microbial activity and a delay in the decomposition of organic matter. In this study, efficiencies of neutralization of the leachate and organic matter decomposition in the waste layer in a column filled with MSWI residue using aeration and compost addition were evaluated. Total organic carbon (TOC) reduction in the waste layer is large at high oxygen flow rate (OFR). To effectively accelerate TOC reduction in the waste layer to which compost was added, a high OFR exceeding that by natural ventilation was required. At day 65, the pH of the leachate when OFR was above 102 mol-O2/(day·m3) was lower than that when OFR was below 101 mol-O2/(day·m3). At the same OFR, the pH of waste sample was lower than that of waste sample with compost. Although leachate neutralization could be affected by compost addition, TOC reduction in the waste layer became rather small. It is possible that humic substances in compost prevent the decomposition of TOC in MSWI residue. |
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| Keywords: | waste landfill aeration neutralization acceleration of stabilization |
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