Reactive Solute Transport Through Porous Media

The law and the modeling method of Groundwater pollution and transport mechanisms in porous media, has became a hot research in hydrogeologjcal field and environmental field. However, there are some problems both in terms of theory and research in practical applications due to the spatial variability of porous media, and the groundwater flow and contaminant transport is complicated. We also select the inert materials in most studies, the reaction and migration of reactive solute in porous media is relatively less. Therefore, we choose Reactive solute transport through porous media:A case study of CUSO4 and NalEDTA2= as an example to carry out the experiment and simulation studies of,double molecular reactive solute transport in porous media in order to provide the necessary data for the theoretical research referring to previous testing method to detect the concentrations of various pollutants, to obtain the law of reactive pollutant transport reactions in porous media Summarize the research mentality and the experimental results of this paper, the conclusions are as following:Referring to previous detection methods to detect the concentration of various pollutants, as well as by comparing the numerical simulation analysis. Summary of research ideas and experimental results of this paper, the following conclusions:(1) Through summarize the relevant literatures, we choose CuSO4 and Na2EDTA2-to study the law of reactive pollutant migration, the use of image method avoids the experimental error caused by sampling, the experiments confirmed the feasibility of this method.(2) Velocity and scale have influence on solute transport in porous media. As velocity increasing, the peak concentration is increasing and the time to peak concentration is decrease. As the sampling port increasing he peak concentration is decreasing and the time to peak concentration is increaseing.(3) The use of ADRE solute transport model was simulated, the results showed that the fitting ADRE’s more realistic, fitting better.(4) Through the log-log plot of dispersion versus velocity for the porous media with three different diameter, We found a significant linear relationship between dispersion and velocity, and the relationship can be represented by D= aVβ, β changes between 1.0 and 2.0, and increase with particle size increasing.