| 垃圾焚烧飞灰浸出特性 |
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| 引用本文： | 姜永海,席北斗,李鸣晓,苏 婧,韦尚正,刘鸿亮.垃圾焚烧飞灰浸出特性[J].环境科学研究,2009,22(12):1478-1481. |
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| 作者姓名： | 姜永海 席北斗 李鸣晓 苏 婧 韦尚正 刘鸿亮 |
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| 作者单位： | 1.中国环境科学研究院,北京 100012 |
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| 基金项目： | 国家重点基础研究发展计划(973)项目 |
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| 摘 要： | 利用柱试验研究了我国垃圾焚烧飞灰在过流系统中的浸出特性. 结果表明:在过流系统中，浸出液的pH呈先升后降的趋势，并且在试验后期保持在碱性条件(pH在9.66左右)；飞灰中阳离子(Na+，K+，Ca2+)和阴离子(Cl－，SO42－)的浸出主要集中在试验初期(第96 天)，使初期浸出液含盐量很高；柱试验中4种重金属的浸出质量浓度〔ρ(Cd)，ρ(Pb)，ρ(Cu)和ρ(Cr)〕远低于批试验，但试验前期浸出液中的重金属浸出质量浓度相对较高；当浸取时间超过120 d时，虽然浸出液中重金属浸出质量浓度明显降低，但仍有一定量的重金属不断浸出.
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| 关 键 词： | 垃圾焚烧飞灰 长期浸出 无机盐 重金属 |
| 收稿时间： | 2009/4/23 0:00:00 |
| 修稿时间： | 2009/8/12 0:00:00 |
Leaching Characteristics of Fly Ash from Municipal Solid Waste Incineration |
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| JIANG Yong-hai,XI Bei-dou,LI Ming-xiao,SU Jing,WEI Shang-zheng and LIU Hong-liang.Leaching Characteristics of Fly Ash from Municipal Solid Waste Incineration[J].Research of Environmental Sciences,2009,22(12):1478-1481. |
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| Authors: | JIANG Yong-hai XI Bei-dou LI Ming-xiao SU Jing WEI Shang-zheng and LIU Hong-liang |
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| Affiliation: | 1.Chinese Research Academy of Environmental Sciences, Beijing 100012, China2.Chinese Research Academy of Environmental Sciences, Beijing 100012, China3.Chinese Research Academy of Environmental Sciences, Beijing 100012, China4.Chinese Research Academy of Environmental Sciences, Beijing 100012, China5.Chinese Research Academy of Environmental Sciences, Beijing 100012, China |
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| Abstract: | The leaching characteristics of fly ash from municipal solid waste incineration (MSWI) in a flow-through system were studied using column tests. The results from the leaching tests showed that: The pH of the extract increased at the beginning of the experiments and then decreased, and remained in alkaline condition (pH=9.66) until the end of the experiments;The leaching process of main cations (Na~+, K~+, Ca~(2+)) and anions (Cl~-, SO_4~(2-)) in the fly ash mostly happened at the beginning of the experiments (96 days), resulting in very high salinity in earlier lixivium;The leaching concentrations of four heavy metals (Cr, Pb, Cu and Cd) in the column leaching tests were much lower than those of the batch tests, and they were relatively high at the beginning of the experiment. Although the leaching concentrations of the heavy metals obviously decreased when the leaching time was greater than 120 days, the comparative heavy metals could be exuded continuously. |
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| Keywords: | fly ash from MSWI long-term leaching inorganic salt heavy metal |
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