Joint Detection Technology Research In The Process Of Soil Pollution

The problem of environmental pollution has become the concern of human beings, the problem of soil pollution is particularly prominent, for the different types of pollution in nature,only to understand the concentration and spatial distribution of pollutants, it can take control and repair work is relatively effective for contaminated sites. According to the difference of the pollutant (source) and the surrounding medium in nature,With the aid of a device and a special instrument, it is concluded that the spatial distribution of underground pollution is an effective way to achieve the purpose of the investigation of the contaminated site.Detection of high density and non aqueous phase fluid and Contaminants dissolved in water must be combined with environmental science, hydrogeology and engineering geology,fluid mechanics and other related disciplines,understanding migration?detention?disappearance of various pollutants in different geological conditions of and differences and physical properties of soil and rock around the combination of indoor simulation experiment by means of the analysis of the corresponding chemical, we can choose the appropriate geophysical methods of effective means.Improve the detection accuracy, to carry out research on the different nature of the pollutants transport in silt, for the applicability of the detection method to provide more extensive exploration of pollution in silty soil distribution in Hangzhou area. The feasibility of application of test methods, in order to be closer to the actual conditions, the effects of size exclusion model the pollution of migration, a large model to simulate, through simulating the different migration forms of pollution (point source pollution and non-point source) in saturated soil or in unsaturated soil, study the relationship between detection method and pollution migration.Through the process of simulated pollutants, water, copper sulfate solution, carbon tetrachloride to simulate different pollutants in the saturated silt and pollution migration in unsaturated silt, analysis to determine soil pollutants and the interaction between the dielectric constant of soil under the condition of the corresponding parameters, detection of pollutants electrical conductivity distribution and change situation in the soil, provide data support for the study of the distribution of pollutants in soil.In the process of test, were calculated according to the pollution in the form of different pollutants in soil, speed is not the same, to carry out the corresponding high density resistivitymethod and the TDR test work, through the data analysis, high density resistivity method and results of TDR can corresponding with the process of simulation, using the test results, and determine the pollutant migration velocity, direction, and the spatial distribution of pollutants of different stages.Combined with the test results of different time, the use of high density resistivity method to spatial distribution of pollution and movement has good detection effect, is to pollution pollutants form and space position detection is a good method, and has more data information,convenient detection, and many other advantages.