| 污染河流中苯系物对浅层地下水影响的室内模拟试验 |
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| 引用本文： | 李志萍,陈肖刚,郝仕龙,沈照理.污染河流中苯系物对浅层地下水影响的室内模拟试验[J].地球科学与环境学报,2007,29(1):70-74. |
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| 作者姓名： | 李志萍 陈肖刚 郝仕龙 沈照理 |
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| 作者单位： | 1. 华北水利水电学院,岩土工程系,河南,郑州,450008
2. 中国地质大学,水资源与环境工程学院,北京,100083 |
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| 基金项目： | 国家重点基础研究发展计划(973计划);华北水电学院青年基金 |
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| 摘 要： | 为了研究污染河流中苯系物对浅层地下水的影响,室内试验选用3种天然砂土作为渗透介质,以生活污水模拟污染河流,68 d以后发现,苯、甲苯和苯系物总量的总去除率在粗砂中分别为32.06%、21.39%和27.13%。在两种中砂中总去除率2号柱为76.26%、81.40%和87.99%,3号柱为68.94%、74.41%和81.69%,粗砂小于中砂,并且由于2号柱的粘粒物质含量大,其总去除率大于3号柱和1号柱。苯系物各组分浓度随深度呈递减趋势,苯系物的净化作用主要发生在地表以下0.4 m范围内。水动力特征的改变影响污染物的迁移和转化特征,苯系物的去除机理为挥发、吸附和生物降解,其中最主要的是厌氧条件下的微生物降解。
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| 关 键 词： | 污染 河流 苯系物 地下水 |
| 文章编号： | 1672-6561（2007）01-0070-05 |
| 修稿时间： | 2006-04-10 |
Lab-Scale Experiment of Influence on Shallow Groudwater by BTEX in Polluted River |
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| LI Zhi-ping,CHEN Xiao-gang,HAO Shi-long,SHEN Zhao-li.Lab-Scale Experiment of Influence on Shallow Groudwater by BTEX in Polluted River[J].Journal of Earth Sciences and Environment,2007,29(1):70-74. |
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| Authors: | LI Zhi-ping CHEN Xiao-gang HAO Shi-long SHEN Zhao-li |
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| Institution: | 1. Department of Geotechnical Engineering, North China Institute of Water Conservancy and Hydroelectric Power, Zhengzhou 450008, Henan, China ; 2. School of Water Resource and Environmental Engineering, China University of Geoscietwes, Beijing 100083, China |
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| Abstract: | To research the influence of BTEX in polluted river on shallow groundwater,in the lab-scale experiment,three kinds of natural sand were chosen as infiltration medium,and polluted rivers were simulated by domestic sewage.After 68 days,it was found that the removal ratios of benzene,toluene and total BTEX are 32.06%,21.39% and 27.13% in coarse sand,and in two kinds of medium sand are 76.26%,81.40% and 87.99% in column2,68.94%,74.41% and 81.69% in column 3.The removal ratio of total BTEX in column 2 is the greatest due to the largest clay material content.The concentration of BTEX decreased with depth.The removal of BTEX mainly occurred in the 0.4m under the ground.The changes of hydrodynamic characteristics influence the migration and transformation of pollutants.The removal mechanism of BTEX are volatilization,adsorption and biodegradation.Anaerobic microorganism degradation is dominant. |
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| Keywords: | polluted river BTEX groundwater |
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