| 有机污染物(菲)在弱透水层中的越流迁移特征 |
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| 引用本文： | 李绪谦,宋爽,李红艳,孙大志,朴明月,朱雅宁.有机污染物(菲)在弱透水层中的越流迁移特征[J].吉林大学学报(地球科学版),2011,41(3):840-846. |
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| 作者姓名： | 李绪谦 宋爽 李红艳 孙大志 朴明月 朱雅宁 |
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| 作者单位： | 吉林大学环境与资源学院,长春,130026;中国科学院东北地理与农业生态研究所,长春,130012;吉林化工学院环境与生物工程学院,吉林省吉林市,132022 |
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| 基金项目： | 国家自然科学基金项目(40872154) |
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| 摘 要： | 采用高渗透压渗流试验装置,模拟已被污染的浅层地下水越流通过弱透水层污染深层地下水的过程,研究不同矿化度、不同pH条件下有机污染物(菲)通过饱和黏性土弱透水层时的质量浓度变化特征。结果表明:矿化度的增加有利于弱透水层吸附截留渗滤液中的菲;高矿化度水中的Na+交替土层中的Ca2+、Mg2+,使水中的Ca2+、Mg2+质量浓度增加,与HCO-3、菲组合形成络合物;不同pH条件下,Ca2+、Mg2+、HCO-3对菲的迁移有阻滞作用,SO24-参与还原反应并可与菲形成络合物,对菲迁移有促进作用。菲在弱透水层中的迁移能力很弱,衰减率达82%~96%,高渗透压下菲的污染锋面迁移速度为0.714 m/d,pH=8时菲通过弱透水层的迁移质量浓度最小。控制渗滤液的pH、组分可有效阻止菲在弱透水层中的迁移。
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| 关 键 词： | 弱透水层 菲 矿化度 pH 越流迁移 |
Cross-Flow Migration of Organic Pollutant (Phenanthrene) in Aquitard |
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| LI Xu-qian,SONG Shuang,LI Hong-yan,SUN Da-zhi,PIAO Ming-yue,ZHU Ya-ning.Cross-Flow Migration of Organic Pollutant (Phenanthrene) in Aquitard[J].Journal of Jilin Unviersity:Earth Science Edition,2011,41(3):840-846. |
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| Authors: | LI Xu-qian SONG Shuang LI Hong-yan SUN Da-zhi PIAO Ming-yue ZHU Ya-ning |
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| Institution: | LI Xu-qian1,SONG Shuang1,LI Hong-yan2,SUN Da-zhi3,PIAO Ming-yue1,ZHU Ya-ning1 1.College of Environmental and Resource Sciences,Jilin University,Changchun 130026,China 2.Northeast Institute of Geography and Agroecology,Chinese Academy of Science,Changchun 130012,China 3.College of Environmental and Biological Engineering,Jilin Institute of Chemical Technology,Jilin 132022,Jilin,China |
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| Abstract: | A high osmotic pressure flow device was used to simulate the flow and contaminant transport processes through the aquitard.The concentration of the organic pollutant(phenanthrene) through saturation clay layer was studied with different degrees of mineralization and pH conditions.The results show that the increase of degree of mineralization can encourage the adsorption of phenanthrene leachate in the aquitard;sodium ions(Na+) in high degree of mineralization water alternate calcium and magnesium ions(Ca2+ ... |
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| Keywords: | aquitard phenanthrene degree of mineralization pH cross-flow migration |
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