A pollutant diffusion coefficient inversion method based on a horizontal diffuser and a VS2DI program

A technology of diffusion coefficient and diffuser, applied in the field of inversion of pollutant diffusion coefficient based on horizontal diffuser and VS2DI program, to achieve accurate results, easy operation and simple method

Inactive Publication Date: 2016-10-19
中国人民解放军沈阳军区司令部工程科研设计所
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Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide an inversion method of polluta

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  • A pollutant diffusion coefficient inversion method based on a horizontal diffuser and a VS2DI program
  • A pollutant diffusion coefficient inversion method based on a horizontal diffuser and a VS2DI program

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Embodiment Construction

[0027] A pollutant diffusion coefficient inversion method based on a horizontal diffuser and VS2DI program, wherein the horizontal diffuser is a rectangular plexiglass container, and its interior is divided into three grooves by two porous plates. The method includes the following steps:

[0028] Step 1, selecting soil material and measuring its geotechnical parameters;

[0029] Step 2, configure the solution and prepare the soil sample;

[0030] Step 3, slice the soil sample to measure the pollutant concentration;

[0031] Step 4, using VS2DI to invert the diffusion coefficient.

[0032] The soil materials selected in the step 1 are clay and improved clay; the geotechnical parameters to be measured are particle gradation curve, permeability coefficient, liquid limit, plastic limit, maximum dry density, optimal water content, porosity and specific gravity.

[0033] When configuring the solution in the step 2, the concentration of the solution and the pH value of the solution...

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Abstract

The invention relates to the technical field of environmental geotechnics, and particularly relates to a pollutant diffusion coefficient inversion method based on a horizontal diffuser and a VS2DI program. The method includes 1) a step of selecting soil and measuring geotechnical parameters of the soil, 2) a step of preparing a solution and preparing a soil sample, 3) a step of slicing the soil sample, and measuring a pollutant concentration, and 4) a step of inversing the diffusion coefficient by utilizing VS2DI. The method combining the head-free diffuser and the VS2DI can conveniently and effectively determine a landfill liner head-free diffusion coefficient. Diffusion coefficients under different conditions can be obtained through changing temperatures, pH values, and related parameters, thus providing reference basis for landfill liner designing. Compared with traditional methods, the method is simple, easy in operation and accurate in result.

Description

technical field [0001] The invention belongs to the technical field of environmental geotechnical engineering, and in particular relates to a pollutant diffusion coefficient inversion method based on a horizontal diffuser and a VS2DI program. Background technique [0002] Municipal solid waste landfills are used more and more, and the landfill leachate contains a large amount of heavy metal pollutants and other harmful substances. Landfills usually have a clay lining system with a low permeability coefficient at the bottom to prevent the infiltration of leachate. Pollutants such as heavy metals have strong penetrating power. Even if the permeability coefficient of the lining system is small, the pollutants can still penetrate the lining under the action of dispersion and enter the groundwater, posing a serious threat to the health of residents. Therefore, it is very necessary to determine the diffusion coefficient of pollutants in the lining. [0003] The determination of ...

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Application Information

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IPC IPC(8): G01N13/00
Inventor 杨清雷龙凡于德浩张金利杨庆李秀坤张连伟杨彤张垚王睿李航陈思扬齐文勃
Owner 中国人民解放军沈阳军区司令部工程科研设计所
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