An in-situ soil column leaching test device and method

An in-situ soil column and test device technology, which is used in soil material testing, material inspection products, etc., can solve the problems of inaccurate test results and large errors, so as to be suitable for popularization and application, improve accuracy, and avoid long-term contact. Effect

Active Publication Date: 2021-09-07
INST OF HYDROGEOLOGY & ENVIRONMENTAL GEOLOGY CHINESE ACAD OF GEOLOGICAL SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] One of the purposes of the present invention is to provide an in-situ soil column leaching test device to solve the problems of large errors and inaccurate test results in existing test devices

Method used

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  • An in-situ soil column leaching test device and method
  • An in-situ soil column leaching test device and method
  • An in-situ soil column leaching test device and method

Examples

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Embodiment 1

[0030] Example 1: In-situ soil column leaching test device.

[0031] Such as figure 1 As shown, the present invention mainly includes a limit frame, a receiving tray 1, a liquid reservoir, an exhaust pipe 18, a sampling bottle 17, an inflation device, a controller 13 and the like.

[0032] The limiting frame includes an outer frame 19 and an inner frame 20 arranged coaxially, the inner frame 20 and the outer frame 19 are circular frames of equal height (the height of the two frames is about 50cm, and the diameters are 25cm and 50cm respectively), and both They are all made of stainless steel and are used to restrict the lateral seepage of the leaching solution to achieve one-dimensional vertical leaching close to the soil column.

[0033] The receiving tray 1 is arranged below the limit frame through the support 2, and the support 2 is a hollow three-dimensional net support to support and protect the receiving tray. When in use, since the receiving tray needs to be arranged i...

Embodiment 2

[0041] Embodiment 2: In situ soil column leaching test method.

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Abstract

The invention relates to an in-situ soil column leaching test device and method. The device includes a limit frame, a receiving plate arranged below the limit frame, a liquid reservoir connected to the bottom of the receiving plate, a sampling conduit and a liquid storage The sampling bottle communicated with the bottom of the reservoir, the inflation device used to inflate the liquid reservoir, the exhaust pipe used to discharge the gas in the liquid reservoir and the controller used to control the inflation device. The present invention utilizes "double frames and equal water head infiltration" to constrain the lateral seepage of the leaching solution to obtain a one-dimensional vertical leaching approaching the soil column, greatly reducing the influence of the lateral flow of the solute, and directional collection of the target seepage surface, The in-situ leaching and liquid collection of the target soil column are realized. The specially designed leach solution collection structure of the invention is ingeniously designed, which can effectively avoid the long-term contact between the soil leach solution and the air, facilitates the oxygen-free collection of the leach solution containing reduction-sensitive indicators, and avoids the oxidation and precipitation of the reduction-sensitive indicators. Ensure the authenticity of the collected shower solution composition.

Description

technical field [0001] The invention relates to a soil detection test device and method, in particular to an in-situ soil column leaching test device and method. Background technique [0002] The material composition of soil closely affects the migration and change behavior of soil ecological quality and environmental factors in contact with it. Soil column leaching experiment maintains the integrity of soil particle structure when obtaining soil leaching solution, and can also simulate natural dynamic infiltration processes such as precipitation and irrigation, so it is widely used in soil chemistry and soil pollution remediation research. The existing soil research method is to carry out indoor soil column filling and leaching experiments on the collected soil samples. The operation process is very likely to cause changes in the environmental background, soil structure, physical and chemical properties, and biological activities, making the experimental conditions differen...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N33/24
Inventor 黄爽兵顾文龙雷珊苏炤新岳钧
Owner INST OF HYDROGEOLOGY & ENVIRONMENTAL GEOLOGY CHINESE ACAD OF GEOLOGICAL SCI
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