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In-situ soil column leaching test device and method

An in-situ soil column and test device technology, applied in soil material testing, material inspection products, etc., can solve the problems of inaccurate test results and large errors, and achieve the goal of being suitable for popularization and application, improving accuracy, and ingenious structural design. Effect

Active Publication Date: 2019-06-21
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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  • In-situ soil column leaching test device and method
  • In-situ soil column leaching test device and method
  • In-situ soil column leaching test device and method

Examples

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Effect test

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 comprises a limiting frame, a receiving tray disposed under the limiting frame, a liquid storage device communicated with the bottom part of the receiving tray, a sampling bottle communicated with the bottom part of the liquid storage device through a sampling conduit, an inflator for inflating air to the liquid storage device, an exhaust pipe for exhausting air in the liquid storage device and a controller for controlling the inflator. Double-frame equal-water head infiltration is used to restrict lateral seepage of a leaching solution, one-dimensional vertical leaching approaching the soil column is obtained, the influences of solute lateral flow are greatly reduced, a target leakage surface is directionally collected, and in-situ leaching and liquid collection of the target soil column are realized. The specially-designed leaching solution collection structure is delicately designed, long-term contact between the soil leaching solution and the air can be effectively avoided, non-aeration collection of the leaching solution containing a reduction sensitive index is facilitated, oxidation and precipitation of the reduction sensitive index are avoided, and the authenticity of the composition of the collected leaching solution is ensured.

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 Applications(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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