摘要
本文主要是运用GMS软件,以氯代烃的典型污染区为模拟区,以三氯乙烯和四氯乙烯为模拟对象,在水流模型的基础上建立溶质模型,进行识别和验证,并根据模拟结果分析氯代烃在地下水中的迁移转化规律。模拟的结果表明,四氯乙烯和三氯乙烯的降解主要与氧化还原环境有关。模型中四氯乙烯和三氯乙烯的阻滞系数在地下水中相差不大,分别为6.52和6.34。但四氯乙烯的降解系数约为三氯乙烯的6倍。从整体上看,三氯乙烯和四氯乙烯污染羽的范围有不同程度的扩大,且浓度不断的降低。
This article described the process of setting up a numerical simulation on migration and transformation of chlorinated hydrocarbon in groundwater by means of GMS software.The range of the flow model was based on typical contaminated area of chlorinated hydrocarbons.The parameters of the model were identified and validated,in order to make the flow model reflect the actual hydraulic characteristics of the groundwater.Finally,the transformation and migration model of chlorinated hydrocarbon in the study area was set up based on the flow model,and the migration of chlorinated hydrocarbons could be predicted according to our result.The simulation demonstrated that：The degradation of PCE and TCE were mainly related to red-ox environment.In the model,retardation coefficient of PCE and TCE in groundwater showed little difference,with the value of 6.52 and 6.34,respectively.In contrast,the degradation coefficient showed a significant difference;the value of PCE was 6 times the value of TCE.In sum,the range of TCE plume and PCE plume expanded to different extents and the concentration of these two pollutants continued to reduction.
出处
《北京城市学院学报》
2010年第4期99-103,共5页
Journal of Beijing City University
关键词
地下水
有机污染
氯代烃
数值模拟
groundwater
organic pollution
chlorinated hydrocarbon
numerical simulation
