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| 准好氧填埋氧气扩散模拟分析 | |
| 引用本文： | 丁世存,黄启飞,金典,庞香蕊.准好氧填埋氧气扩散模拟分析[J].环境科学与技术,2010,33(1). |
| 作者姓名： | 丁世存 黄启飞 金典 庞香蕊 |
| 作者单位： | 1. 中国环境科学研究院固体废物污染控制技术研究所,北京,100012;北京科技大学土木与环境工程学院,北京,100083 2. 中国环境科学研究院固体废物污染控制技术研究所,北京,100012 3. 辽宁大学环境与资源学院,辽宁,沈阳,110036 |
| 基金项目： | 国家自然科学基金项目(50508042);;中国环境科学研究院公益性行业专项(2007KYYW24) |
| 摘 要： | 依据准好氧填埋工艺的原理建立了试验装置,在填埋进入相对稳定期后,测定填埋装置内各个采样点的填埋气体积分数φ(CH)4、φ(CO)2以及φ(O)2,分析了采样点到中心导气管的距离对φ(O)2的影响,并采用数学模型进行拟合。结果表明,准好氧填埋进入相对稳定期后,由于装置内外温度差异以及氧气浓度的差异使氧气通过导排管进入装置内部,并呈现出上层下层中层的规律。在垃圾填埋体的好氧分解反应、硝化作用以及甲烷氧化作用的共同作用下,下层与中层φ(O)2与距离的关系呈现指数规律下降,上层由于结构的特殊性呈现抛物线形状。 |
| 关 键 词： | 准好氧填埋 填埋气 氧气 迁移扩散 数值模拟 |
Simulation on Diffusion of Oxygen in Semi-aerobic Landfill |
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| DING Shi-cun,HUANG Qi-fei,JIN Dian,PANG Xiang-rui.Simulation on Diffusion of Oxygen in Semi-aerobic Landfill[J].Environmental Science and Technology,2010,33(1). | |
| Authors: | DING Shi-cun HUANG Qi-fei JIN Dian PANG Xiang-rui |
| Institution: | 1.Research Institute of Solid Waste Management;Chinese Research Academy of Environmental Science;Beijing 100012;China;2.School of Civil and Environmental Engineering;University of Science and Technology Beijing;Beijing 100083;3.School of Environment and Resource;Liaoning University;Shenyang 110036;China |
| Abstract: | According to theory of semi-aerobic landfill,lab scale installment was set up.During the steady stage of landfill process,the volume fraction of methane,carbon dioxide and oxygen were detected in different sampling points.The effect of distance between sampling point and central gas tube to the volume fraction of oxygen was analyzed and simulated with mathematic model.Results showed that in the steady stage of semi-landfill,volume fraction of oxygen in different layers showed certain trend because of oxygen... |
| Keywords: | semi-aerobic landfilling landfill gas oxygen transportation and diffusion numerical simulation |
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