The Study On The Migration And Transformation Of Organic Pollutants In The Polluted Area And The Natural Purification Capacity In The Aquifer System

On the basis of full collection of datas of Geology and hydrology of a oil leakage field in Baoding of Hebei province, firstly, this article established of the concept, and mathematical model flow, hen simulated the groundwater between 23 to 26m of the area's aquifer by Groundwater Modeling System Software(Groundwater Modeling System Software).Finally, the model identification and verification of calculation error range were all allowed in the national context, and this proved the flow model was stable and reliable, and the the flow field that predict could be a more realistic response to the situation of the natural flow field. The model was divided into nine areas based on the aquifer parameters, and the time before and after the pumping test were used as identification and authentication. After adjusting for the participation we obtained the preferable result, and this could better reflect the characteristics of movement of groundwater system.On the basis of Groundwater flow model we use of chloride ion diffusion test to establish groundwater quality model, and use MT3D to get the Solution of the Water quality model, By comparing the measured and calculated values of the distribution of chloride concentration, we can validate the established water quality model, at last, we can determine the dispersion degree of partition 9 in the study area.Based on the water quality model we divided into two situations to simulate the main organic pollutants BETX in the study area. Firstly, in the convection dispersion of pollutants under the principles of simulation and prediction, secondly, not only to consider the role of convective dispersion, taking into account biological degradation, chemical reaction of migration and transformation of pollutants under simulated. Comparison of simulation results of both cases and found that biodegradation of the study area for the degradation of organic matter plays a good role, so that the use of in situ bioremediation technology for treatment of organic pollution in the region viable in this area is feasible.