| 通风对堆肥供氧的影响及堆高优化研究 |
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| 引用本文： | 沈玉君,李国学,任丽梅,汤灿,郭瑞.通风对堆肥供氧的影响及堆高优化研究[J].环境科学与技术,2011,34(11):171-175. |
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| 作者姓名： | 沈玉君 李国学 任丽梅 汤灿 郭瑞 |
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| 作者单位： | 1. 中国科学院地理科学与资源研究所,北京100101;中国农业大学资源与环境学院,北京 100193
2. 中国农业大学资源与环境学院,北京,100193 |
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| 基金项目： | 国家自然科学基金(40971177); 重大水专项“畜禽养业废弃资源化处理技术研究与示范”(2008ZX807209-03-3); “十一”五国家科技支撑计划项目(2007BAD89BP7) |
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| 摘 要： | 通风是影响好氧堆肥过程中堆体氧气浓度的重要因素.通过设置0.01 m3/(min ·m3)(Al)、0.1 m3/(min·m3)(A2)和0.2 m3/(min·m3)(A3)三种不同通风速率进行好氧堆肥试验,考查堆体中氧气的变化情况,并利用氧气一维扩散方程进行堆体高度的优化.结果表明,鼓风停止时,处理A2、A3的氧...
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| 关 键 词： | 好氧堆肥 通风速率 氧气 堆体高度 |
Impact of Aeration on Oxygen Variation during Composting and Optimization on Pile Height |
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| SHEN Yu-jun,LI Guo-xue,REN Li-mei,TANG Can,GUO Rui.Impact of Aeration on Oxygen Variation during Composting and Optimization on Pile Height[J].Environmental Science and Technology,2011,34(11):171-175. |
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| Authors: | SHEN Yu-jun LI Guo-xue REN Li-mei TANG Can GUO Rui |
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| Institution: | SHEN Yu-jun1,2,LI Guo-xue2*,REN Li-mei2,TANG Can2,GUO Rui2(1.Institute of Geographic Science and Natural Resource,Chinese Academy of Sciences,Beijing100101,China,2.College of Resource and Environment Science,China Agriculture University,Beijing100193,China) |
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| Abstract: | Aeration is a critical factor determining the oxygen concentration during composting process.By setting 3 different aeration rates which were 0.01 m3/(min·m3)(Al),0.1 m3/(min·m3)(A2) and 0.2 m3/(min·m3)(A3),the oxygen variation was studied and the optimal height of composition pile was obtained based on one-dimensional diffusion equation of oxygen.Results showed that the oxygen concentration of A2 and A3 was close to 20% at the time of aeration stopped,up to the requirement of reoxygenation,while the maximum oxygen concentration of Al was only 7.7%.After stopping 30 min for aeration,there was no obvious change for A1.But the oxygen concentration of A2 and A3 decreased to below 10% compared to the aeration stopping time.At the whole composting process,the oxygen concentration of A2 was below A3 during composting,with the maximum oxygen consumption rate of A2 up to 0.530△O2%/min and higher than other runs.The maximum consumption rate could be reached using the shortest time.If composting is processed at volume of 60 L and aeration rate of 0.1 m3/(min·m3),the composting pile designed for 2.83 m could conserve resource and increase compost production effectively. |
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| Keywords: | aerobic composting aeration rate oxygen pile height |
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