| 天然与改性膨润土组合处理难生物降解垃圾渗滤液的实验研究 |
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| 引用本文： | 周建工,王长秋,鲁安怀,刘学建.天然与改性膨润土组合处理难生物降解垃圾渗滤液的实验研究[J].岩石矿物学杂志,2007,26(6):499-504. |
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| 作者姓名： | 周建工 王长秋 鲁安怀 刘学建 |
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| 作者单位： | 1. 北京大学,地球与空间科学学院,造山带与地壳演化教育部重点实验室,北京,100871
2. 北京环卫工程集团,四清分公司,阿苏卫垃圾填埋场,北京,102211 |
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| 摘 要： | 以北京市阿苏卫垃圾填埋场中晚期渗滤液为研究对象,通过正交实验的方法分析了改性土、原土、明矾、改性土加明矾等的用量及搅拌速度、搅拌时间、静置时间等因素对垃圾渗滤液CODcr去除率的影响。通过对改性土、原土、明矾处理垃圾渗滤液的机理进行分析后,将改性土、原土分别用来处理垃圾渗滤液中可溶性物质中的疏水性物质和亲水性物质,并结合明矾的絮凝作用组合处理垃圾渗滤液。处理后垃圾渗滤液CODcr值从4700mg/L明显下降到839mg/L,CODcr去除率为82.15%,BOD5从700mg/L下降到263mg/L,BOD5去除率为62.43%。有机改性膨润土、明矾、原土组合处理是一种有效的处理垃圾渗滤液方法。
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| 关 键 词： | 有机膨润土 难生物降解垃圾渗滤液 处理方法 |
| 文章编号： | 1000-6524（2007）06-0499-06 |
| 收稿时间： | 2006-09-26 |
| 修稿时间： | 2006-11-09 |
An experimental study of the treatment of biorefractory landfill leachate by combination of natural bentonite and modified bentonite |
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| ZHOU Jian-gong,WANG Chang-qiu,LU An-huai and LIU Xue-jian.An experimental study of the treatment of biorefractory landfill leachate by combination of natural bentonite and modified bentonite[J].Acta Petrologica Et Mineralogica,2007,26(6):499-504. |
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| Authors: | ZHOU Jian-gong WANG Chang-qiu LU An-huai and LIU Xue-jian |
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| Abstract: | Metaphase and late sanitary landfill leachate from Asuwei in Beijing was taken as the research object.By means of ortho-gonal experiments,the effects of dosage,stirring speed,stirring time and standing time of modified bentonite,natural bentonite,alum,and modified bentonite with alum on the CODcr elimination rate of landfill leachate were analyzed.After analyzing the mechanism of landfill leachate treatment by using natural bentonite,modified bentonite and alum,modified bentonite and natural bentonite were used to treat hydrophobic compounds and hydrophilic compounds of dissolved organic matter(DOM) in landfill leachate respectively,and alum was also used to flocculate landfill leachate.The CODcr and BOD5 values of the treated landfill leachate were much lower than values of the untreated landfill leachate,decreasing from 4?700 mg/L to 839 mg/L and 700 mg/L to 263 mg/L,with the CODcr and BOD5 elimination rates of landfill leachate being 82.15% and 62.43%,respectively.It is shown that the treatment of landfill leachate by combination of modified bentonite,alum and natural bentonite is an effective method. |
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| Keywords: | CODcr |
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