| 调理剂和通风方式对污泥生物干化效果的影响 |
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| 引用本文： | 蒋建国,杨勇,贾莹,杜雪娟,杨世辉.调理剂和通风方式对污泥生物干化效果的影响[J].环境工程学报,2010,4(5):1167-1170. |
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| 作者姓名： | 蒋建国 杨勇 贾莹 杜雪娟 杨世辉 |
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| 作者单位： | 清华大学环境科学与工程系,北京,100084 |
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| 基金项目： | 国家水体污染控制与治理科技重大专项课题（2008ZX07313-001） |
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| 摘 要： | 采用了自主设计的污泥生物干化实验室模拟系统,研究了调理剂、物料配比和通风方式等实验条件对脱水污泥生物干化的影响效果。研究结果表明,与锯末相比,秸秆有利于反应物料温度的上升,含水率下降程度更大;利用秸秆调节污泥初始含水率在60%和65%的实验条件下时,物料的平均含水率分别下降了7%和6%,当初始含水率65%时,生物堆体的温度和含水率没有明显的变化;与连续通风相比较,间歇通风的实验条件有利于生物堆体的温度的升高和干化效果;在该实验中,最佳的生物干化条件是以秸秆为调理剂,初始含水率调至65%以下,以间歇方式进行通风。
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| 关 键 词： | 脱水污泥 生物干化 调理剂 通风 |
| 收稿时间： | 5/8/2009 12:00:00 AM |
Effect of amendments and air-flow on biodrying of dehydrated sewage sludge |
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| Jiang Jianguo,Yang Yong,Jia Ying,Du Xuejuan and Yang Shihui.Effect of amendments and air-flow on biodrying of dehydrated sewage sludge[J].Techniques and Equipment for Environmental Pollution Control,2010,4(5):1167-1170. |
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| Authors: | Jiang Jianguo Yang Yong Jia Ying Du Xuejuan and Yang Shihui |
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| Institution: | Department of Environmental Science and Engineering, Tsinghua University, Beijing 100084, China,Department of Environmental Science and Engineering, Tsinghua University, Beijing 100084, China,Department of Environmental Science and Engineering, Tsinghua University, Beijing 100084, China,Department of Environmental Science and Engineering, Tsinghua University, Beijing 100084, China and Department of Environmental Science and Engineering, Tsinghua University, Beijing 100084, China |
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| Abstract: | Influences of amendments and air-flow on biodrying of dehydrated sewage sludge were studied using a self-designed experimental equipment.The results showed that the temperature of material was rapidly increased and water was easily removed,when straw was used as bulking agent.As initial water content were 60%and 65%,the final water content decreased by 7%and 6%,respectively.Whereas initial water content was higher than 65%,the temperature and water content of material kept consistent.Compared with continuous airflow,interval air-flow better facilitated the increase of temperature and removal of water of material.The present results proved that optimal condition of biodrying of dehydrated sewage sludge were straw as bulking agent,below 65% of initial water content and interval air-flow. |
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| Keywords: | dehydrated sewage sludge biodrying amendments air-flow |
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