| 初始pH值、液固比对某焚烧炉灰重金属渗滤的影响 |
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| 引用本文： | 陆胜勇,池涌,严建华,李晓东,倪明江,岑可法.初始pH值、液固比对某焚烧炉灰重金属渗滤的影响[J].环境科学学报,2003,23(1):48-52. |
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| 作者姓名： | 陆胜勇 池涌 严建华 李晓东 倪明江 岑可法 |
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| 作者单位： | 能源洁净利用与环境工程教育部重点实验室,浙江大学,热能工程研究所,杭州,310027 |
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| 基金项目： | 国家重点自然科学基金资助项目 (N59836 2 10 )，浙江省青年科技人才专项资金资助(RC990 41) |
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| 摘 要： | 对某煤和垃圾混烧流化床焚烧炉的一种灰样品进行了TCLP试验 ,研究了初始渗滤液pH值变化以及液固比变化对该灰中重金属渗滤特性的影响 .在初始渗滤液pH =6之前 ,渗滤后溶液的pH值升高迅速 ,pH =6之后 ,趋势缓慢 .试验结果表明灰中重金属极易在酸性环境中渗滤 .随着初始渗滤液液固比的增大 ,渗滤后溶液的pH值下降 ,渗滤液中的重金属浓度上升 ,灰中的重金属随液固比的增大不断滤出直至饱和状态 .
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| 关 键 词： | TCLP pH值 重金属 渗滤 液固比 |
| 文章编号： | 0253-2468(2003)-01-0048-05 |
| 收稿时间： | 2/1/2002 12:00:00 AM |
| 修稿时间： | 2002年2月1日 |
Effects of initial pH value and solid/liquid ratio on heavy metals leaching of ash from an incinerator |
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| LU Shengyong,CHI Yong,YAN Jianhu,LI Xiaodong,NI Mingjiang and CEN Kefa.Effects of initial pH value and solid/liquid ratio on heavy metals leaching of ash from an incinerator[J].Acta Scientiae Circumstantiae,2003,23(1):48-52. |
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| Authors: | LU Shengyong CHI Yong YAN Jianhu LI Xiaodong NI Mingjiang and CEN Kefa |
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| Institution: | Clean Energy and Environment Engineering Key Laboratory of Ministry of Education, Zhejiang University Institute for Thermal Power Engineering, Hangzhou 310027,Clean Energy and Environment Engineering Key Laboratory of Ministry of Education, Zhejiang University Institute for Thermal Power Engineering, Hangzhou 310027,Clean Energy and Environment Engineering Key Laboratory of Ministry of Education, Zhejiang University Institute for Thermal Power Engineering, Hangzhou 310027,Clean Energy and Environment Engineering Key Laboratory of Ministry of Education, Zhejiang University Institute for Thermal Power Engineering, Hangzhou 310027,Clean Energy and Environment Engineering Key Laboratory of Ministry of Education, Zhejiang University Institute for Thermal Power Engineering, Hangzhou 310027 and Clean Energy and Environment Engineering Key Laboratory of Ministry of Education, Zhejiang University Institute for Thermal Power Engineering, Hangzhou 310027 |
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| Abstract: | TCLP experiment was used to study the relationships between initial pH value, liquid/solid ratio and leaching characteristics of heavy metals in a fly ash sample from a coal and MSW co-firing fluidized bed incinerator. when less then initial pH=6, the pH value after TCLP increased quickly, when more than initial pH=6, the pH value after TCLP increased very slightly. thus heavy metals in fly ash seem to leach easily in acidic condition. The pH value after TCLP decreased with L/S increasing, but heavy metals contents increased till saturation.Thus L/S ratio is another improtant factor which affects the leaching of heavy metals. |
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| Keywords: | TCLP pH value heavy metal leaching L/S ratio |
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