Numerical Parametric Study of Multiple Pollutants Transport Through Compacted Clay Liner

摘要：

　　Compacted clay liners have been widely used as bottom liners in municipal solid waste landfills around the world.However,landfill leachate contains a large variety of pollutants with widely different migration characteristics,and the interaction between multiple pollutants have an effect on migration of pollutants.In this study,a numerical parametric study is conducted to investigate the transport behaviors of commonly found leachate pollutants through compacted clay liner.Prior to the numerical parametric study,the numerical model was verified by centrifuge test results.Parameters considered include dispersivity of compacted clay liner,diffusion coefficients and retardation factors of typical pollutants.The simulation results showed that the pollutant transported through compacted clay liner faster when multiple pollutants were simultaneously present in the leachate.Under a high leachate water head,the effect of diffusion coefficient was not obvious on the pollutants transport through compacted clay liner,moreover,the influence of dispersivity and retardation factor was more significant.

关键词： Numerical parametric study Multiple pollutants Breakthrough CCL MSW landfill

作者: Shi Shu Wei Zhu Haoqing Xu Xihui Fan Shengwei Wang

作者单位: Key Laboratory of Ministry of Education for Geomechanics and Embankment Engineering,Hohai University College of Environment,Hohai University,Nanjing 210098,China School of Architecture and Civil Engineering,Jiangsu University of Science and Technology,Zhenjiang College of Civil Science and Engineering,Yangzhou University,Yangzhou 225127,China

会议类型: 国际会议

会议名称: The 8th International Congress on Environmental Geotechnics(第八届国际环境土工大会)

会议地点: 杭州

会议语种:英文

页码: 478-490

在线出版日期: 2018-10-28（万方平台首次上网日期，不代表论文的发表时间）