| 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1,陈肖刚1,郝仕龙1,沈照理2. 污染河流中苯系物对浅层地下水影响的室内模拟试验[J]. 延边大学学报(自然科学版), 2007, 0(1): 70-74 |
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| 作者姓名： | 李志萍1 陈肖刚1 郝仕龙1 沈照理2 |
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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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| 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,68d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0.4m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 |
Lab-Scale Experiment of Influence on Shallow Groudwater by BTEX in Polluted River |
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| LI Zhi-ping1,CHEN Xiao-gang1,HAO Shi-long 1,SHEN Zhao-li2. Lab-Scale Experiment of Influence on Shallow Groudwater by BTEX in Polluted River[J]. Journal of Yanbian University (Natural Science), 2007, 0(1): 70-74 |
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| Authors: | LI Zhi-ping1 CHEN Xiao-gang1 HAO Shi-long 1 SHEN Zhao-li2 |
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| Affiliation: | 1. Department ofGeotechnical Engineering, North China Institute of Water Conservancy and Hydroelectric Power, Zhengzhou 450008,Henan, China; 2. Schoolof Water Resource and Environmental Engineering, China University ofGeosciences, Beijing 100083, China |
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| Abstract: | To research the influence of BTEX in polluted river on shallow groundwater, in the lab-scaleexperiment, three kinds of natural sand were chosen as infiltration medium, and polluted rivers were simulated bydomestic sewage. After 68 days, it was found that the removal ratios of benzene, toluene and total BTEX are32. 06%, 21.39% and 27.13% in coarse sand, and in two kinds of medium sand are 76.26%, 81.40% and87. 99% in column 2, 68.94%,74.41% and 81.69% in column 3. The removal ratio of total BTEX in column 2is the greatest due to the largest clay material content. The concentration of BTEX decreased with depth. Theremoval of BTEX mainly occurred in the 0.4 m under the ground. The changes of hydrodynamic characteristicsinfluence 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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