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Pollutant transport model device under saturated-unsaturated soil medium conditions

A technology of soil media and model devices, which is applied in the direction of measuring devices, soil material testing, suspension and porous material analysis, etc., can solve the problems of large measurement errors, and achieve the effects of small experimental data errors, simple operation, and low cost

Inactive Publication Date: 2017-05-17
CHINA UNIV OF MINING & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] This application provides a pollutant migration model device under saturated-unsaturated soil medium conditions, which solves technical problems such as large measurement errors in the prior art, simulates the indoor pollutant migration process under saturated-unsaturated soil medium conditions, and reasonably divides the model soil medium. Saturated-unsaturated conditions, correctly measure the water level value of the piezometric tube in the saturated zone soil medium part and the water content of the unsaturated zone soil medium part, reveal the migration law of pollutants in the unsaturated-saturated soil medium, and provide a test for soil pollution control research support

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  • Pollutant transport model device under saturated-unsaturated soil medium conditions

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Effect test

Embodiment 1

[0023] as attached figure 1 As shown, the pollutant migration model device under the condition of saturated-unsaturated soil medium is composed of three parts: the main part, the constant water level tank and the solute spraying device. The main part is connected with the constant water level tank through a transparent hose, and the solute spraying device is at the top of the main body.

[0024]The main part is composed of water outlet hole 1, clay head 2, PVC polyester glass cylinder 14, negative pressure gauge 15, sand column 16, pressure measuring tube 17 and sand layer 18. Manometer 15 and pressure measuring tube 17 are located on PVC polyester glass cylinder 14, and sand column 16 and sand layer 18 are located in PVC polyester glass cylinder 14, and the outer diameter of described PVC polyester glass cylinder 14 is 20cm, and inner diameter It is 19cm, and length is 120cm, and one end of described PVC polyester glass cylinder 14 is airtight as the bottom end of test model...

Embodiment 2

[0031] as attached figure 1 As shown, the pollutant migration model device under the condition of saturated-unsaturated soil medium is composed of three parts: the main part, the constant water level tank and the solute spraying device. The main part is connected with the constant water level tank through a transparent hose, and the solute spraying device is set at the top of the main body.

[0032] The main part is composed of water outlet hole 1, clay head 2, PVC polyester glass cylinder 14, negative pressure gauge 15, sand column 16, pressure measuring tube 17 and sand layer 18. Manometer 15 and pressure measuring tube 17 are located on PVC polyester glass cylinder 14, and sand column 16 and sand layer 18 are located in PVC polyester glass cylinder 14, and the outer diameter of described PVC polyester glass cylinder 14 is 20cm, and inner diameter It is 19cm, and length is 120cm, and one end of described PVC polyester glass cylinder 14 is airtight as the bottom end of test ...

Embodiment 3

[0039] as attached figure 1 As shown, the pollutant migration model device under the condition of saturated-unsaturated soil medium is composed of three parts: the main part, the constant water level tank and the solute spraying device. The main part is connected with the constant water level tank through a transparent hose, and the solute spraying device is set at the top of the main body.

[0040] The main part is composed of water outlet hole 1, clay head 2, PVC polyester glass cylinder 14, negative pressure gauge 15, sand column 16, pressure measuring tube 17 and sand layer 18. Manometer 15 and pressure measuring tube 17 are located on PVC polyester glass cylinder 14, and sand column 16 and sand layer 18 are located in PVC polyester glass cylinder 14, and the outer diameter of described PVC polyester glass cylinder 14 is 20cm, and inner diameter It is 19cm, and length is 120cm, and one end of described PVC polyester glass cylinder 14 is airtight as the bottom end of test ...

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Abstract

The invention discloses a pollutant transport model device under saturated-unsaturated soil medium conditions. The pollutant transport model device is formed by three parts of a main body part, a constant water level water tank and a solute spraying device, wherein the main body part is connected with the constant water level water tank through a transparent flexible pipe; the solute spraying device is arranged on the upper end of the main body part. Compared with a previous saturated soil medium model, a transport model designed by the invention can be used for comprehensively and actually describing soil original structure distribution types under an outdoor natural situation, and a simulation test result is more scientific; the transport model disclosed by the invention has the advantages that pollutants are continuously poured, and the whole medium condition of the transport model is enabled not to change, i.e., improvement is carried out on the basis of the working principle of an original Markov bottle, and a low flow speed state is enabled to be kept on the premise that the flow speed is constant, so that the practicability of the transport model is directly increased.

Description

technical field [0001] The invention belongs to the field of groundwater pollution simulation calculation, in particular to a pollutant migration model device under saturated-unsaturated soil medium conditions. Background technique [0002] With the development of social urbanization, science and technology, and humanization, agriculture has developed vigorously, and more and more land has been used, followed by an increase in soil pollution and the emergence of food safety issues. [0003] With the popularization of the concept of humanization and the formation of a new harmonious society, it is very necessary to control soil pollution in desulfurization. [0004] With the promulgation and implementation of the "Ten Soil Articles" issued by the State Council, the problem of soil pollution has become the focus of people's increasing attention. The seriousness of soil pollution threatens the development of the national economy, especially seriously slowing down the developm...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N33/24G01N15/08
CPCG01N33/24G01N15/08
Inventor 董贵明田娟刘仍阳常大海
Owner CHINA UNIV OF MINING & TECH
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