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承压含水层中反应性溶质运移实验与模拟研究——以苯胺和1,2-萘醌-4-磺酸钠为例

Experimental and Simulating Study of Reactive Solute Transport in a Confined Aquifer: A Case of 1,2-naphthoquinone-4-sulfonic Acid and Aniline
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摘要 反应性溶质运移机理和模拟是地下水污染防治的前提和基础。为了考察化学反应和水流条件对溶质运移的影响,本文设计了承压含水层物理模型,以苯胺和1,2-萘醌-4-磺酸钠化学反应为例,开展了双分子化学反应条件下不同流速溶质运移实验和模拟研究,得到主要结论如下:(1)利用变系数二级反应率改进的ADRE模型能够较好地模拟在3种不同流速下双分子反应性溶质运移行为,峰值浓度相对误差分别为4.5%、5.0%及10.1%,模型可行,且模拟精度较高。(2)随着流速增大,模型参数m减小,而β0则增大。(3)模型对参数m值变化最敏感,其次是β0值,较不敏感的是弥散系数D。(4)随着流速增大,反应物和产物穿透曲线的不规则性加强,存在较明显的"拖尾"现象,今后需要进行机理方面的研究。 The mechanism and simulation of reactive solute transport are premise and basis for groundwater pollution prevented and cured. To study the solute transport affected by chemical reaction and flow rates, we design a physical model standing for a confined aquifer, keep the properties of porous media unchanged, and take a case study of bimolecular reactive transport using aniline and 1,2-naphthoquinone-4-sulfonic acid. Batch experiments and numerical simulations are conducted under different flow conditions, respectively. Main conclusions are drawn as follows: (1) The ADRE model revised by a variable two-order reaction rate can capture well the behavior of bimolecular reactive transport in different flow rates, respectively. The relative errors of peak product concentration simulated vs. measured are 4. 5%, 5.0% and 10. 1%, respectively. The model is feasible with higher accuracy; (2) With increasing of flow velocities, the values of m decrease, and the values of β0 increase; (3) The model sensitivity to parameter "m" is the largest, the second is "β0", the parameter "D" is slightly sensitive; (4) With the flow velocity increasing, the breakthrough curves of reactants and products become more irregular, and there are some obvious "long tail" in the curve. Further mechanism study is needed.
出处 《皖西学院学报》 2013年第5期88-92,共5页 Journal of West Anhui University
基金 国家自然科学基金(41372245 41272251) 合肥工业大学创新群体计划项目(2009HGCX0233)
关键词 反应性溶质运移 实验 数值模拟 苯胺 1 2-萘醌-4-磺酸钠 Reactive solute transport experiment numerical simulation aniline 1,2-naphthoquinone-4-sulfonic acid
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参考文献13

  • 1高光耀,冯绍元,马英,詹红兵.考虑弥散尺度效应的一维反应性溶质运移两区模型及应用[J].水利学报,2011,42(6):631-640. 被引量:12
  • 2张丛志,张佳宝,徐绍辉,张辉.反应性溶质在不同质地饱和土柱中运移的数值模拟[J].水科学进展,2008,19(4):552-558. 被引量:9
  • 3Kapoor V,Jafvert C T,Lyn D A. Experimental study of bimolecular reaction in Poiseuille flow[J].{H}Water Resources Research,1998,(08):1997-2004.
  • 4Sanchez-Vila X,Fernandez-Garcia D,Guadagnini A. Interpretation of column experiments of transport of solutes undergoing an irreversible bimolecular reaction using a continuum approximation[J].{H}Water Resources Research,2010.1029-2010.
  • 5Tartakovsky A M,Tartakovsky G D,Scheibe T D. Effects of incomplete mixing on multicomponent reactive transport[J].{H}Advances in Water Resources,2009,(11):1674-1679.doi:10.1016/j.advwatres.2009.08.012.
  • 6Jose S C,Cirpka O A. Measurement of mixing-controlled reactive transport in homogeneous porous media and its prediction from conservative tracer test data[J].{H}Environmental Science and Technology,2004,(07):2089-2096.doi:10.1021/es034586b.
  • 7Fernández-Garcia D,Sanchez-Vila X,Guadagnini A. Reaction rates and effective parameters in stratified aquifers[J].{H}Advances in Water Resources,2008,(10):1364-1376.doi:10.1016/j.advwatres.2008.07.001.
  • 8Sanchez-Vila X,Fernandez-Garcia D,Guadagnini A. Conditional probability density functions of concentrations for mixing controlled reactive transport in heterogeneous aquifers[J].Math Geoscience,2009.323-351.
  • 9Raje D S,Kapoor V. Experimental study of bimolecular reaction kinetics in porous media[J].{H}Environmental Science and Technology,2000.1234-1239.
  • 10Gramling C M,Harvey C F,Meigs LC. Reactive transport in porous media:A comparison of model prediction with laboratory visualization[J].{H}Environmental Science and Technology,2002.2508-2514.

二级参考文献31

  • 1李国敏,陈崇希.空隙介质水动力弥散尺度效应的分形特征及弥散度初步估计[J].地球科学(中国地质大学学报),1995,20(4):405-409. 被引量:35
  • 2Bear J.多孔介质流体动力学[M].李竞生,等译,北京:中国建筑工业出版社,1982.
  • 3Gelhar L W, Wehy C, Rehfeldt K R. A critical review of data on flied-scale dispersion in aquifers[J]. Water Resources Research, 1992, 28(7) : 1955-1974.
  • 4Pickens J F, Grisak G E. Modeling of scale-dependent dispersion in hydrogeologic systems[J] . Water Resources Research, 1981, 17(6): 1701-1711.
  • 5Zhang D . Stochatic methods for flow in porous media: coping with uncertainties [ M ] . Academic Press, San Diego, 2002.
  • 6Wang H, Persaud N, Zhou X . Specifying scale-dependent dispersivity in numerical solutions of the convection-dispersion equation[J]. Soil Science Society of America Journal, 2006, 70(5) : 1843-1850.
  • 7Yates S R . An analytical solution for one-dimensional transport in heterogeneous porous media [J] . Water Re- sources Research, 1990, 26(10) : 2331-2338.
  • 8Yates S R . An analytical solution for one-dimensional transport in porous media with an exponential dispersion function[J] . Water Resources Research, 1992, 28(8) : 2149-2154.
  • 9Pang L P, Hunt B . Solutions and verification of a scale-dependent dispersion model[J]. Journal of Contaminant Hydrology, 2001, 53: 21-39.
  • 10van Genuchten M Th, Wierenga P J. Mass transfer studies in sorbing porous media I, Analytical solutions [J] . Soil Science Society of America Journal, 1976, 40 (4) : 473-480.

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