A leaching test device and method for indoor heavy metal pollutants

A test device and heavy metal technology, applied in the field of environmental geotechnical and environmental engineering, can solve the problems of long time-consuming period and inconvenience of a large number of experiments, and achieve the effect of uniform spraying and dispersion

Inactive Publication Date: 2017-06-13
SOUTHWEST JIAOTONG UNIV
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Problems solved by technology

[0003] At present, the method of polluting the environment with heavy metal elements is mainly to conduct on-site sampling of rock and soil and polluted water, but this method takes a long time and is inconvenient to carry out a large number of experiments. Such as: black rock strata) or metal mines, the indoor simulation test of the release, migration and transformation of heavy metal elements has become an important topic in environmental rock and soil, and the indoor test method of water-rock chemistry under heavy metal leaching is also particularly important.

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  • A leaching test device and method for indoor heavy metal pollutants
  • A leaching test device and method for indoor heavy metal pollutants
  • A leaching test device and method for indoor heavy metal pollutants

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Embodiment Construction

[0030] The technical solution of the present invention will be described in detail below in combination with the embodiments and the accompanying drawings.

[0031] like figure 1 and figure 2 shown,

[0032]A leaching test device for testing the release and migration of heavy metal elements, comprising: a bracket 13, a leaching column (7), a first leaching collection bottle 11 with scales, a second leaching collection bottle 27, a vacuum pump 12, and a safety bottle 26. The leaching column 7 is placed on the support 13, the second leaching collection bottle 27 with scale is placed at the lower end of the leaching column 7, and a suction leakage meter 9 is arranged on the side of the leaching column 7. The height of the leaching column 7 is greater than or equal to 105 cm, the inner diameter of the leaching column 7 is greater than or equal to 12.5 cm, and the absorption leakage instrument 9 is connected to the first leaching collection bottle 11 through the first catheter 5...

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Abstract

The invention belongs to the field of environmental geotechnical and environmental engineering, and in particular relates to a leaching test device and method for heavy metal pollutants. The invention provides a leaching test device for testing the release and migration of heavy metal elements. The experimental device can monitor the physical condition of each layered rock-soil body and the release and migration of heavy metals to groundwater, and can monitor each layered rock-soil body and leachate. By performing real-time sampling and detection, the test device can simulate the leaching, migration and transformation process of heavy metal elements in various layers of rock and soil. The present invention also provides a method for carrying out a leaching test for testing the release and migration of heavy metal elements, including: filling a leaching column, and testing the obtained time intervals, different time intervals, The concentration of heavy metal elements in layers, solid samples of different flow rates and leached liquid samples. This method can effectively simulate the concentration parameters of heavy metal elements in different leaching column layers under leaching action.

Description

technical field [0001] The invention belongs to the field of environmental geotechnical and environmental engineering, and in particular relates to a leaching test device and method for heavy metal pollutants. Background technique [0002] Rock and soil bodies containing heavy metal elements are widely distributed in my country, especially black rock formations that contain metal elements to form metal ore bodies, but acid mine water is easily formed in the tailings formed after mining or during the weathering of rock mass, resulting in water-rock chemistry. A large amount of toxic and harmful heavy metal elements are released, and gradually spread into the water environment to pollute the surrounding soil environment. The pH value of acidic water is usually low, and can be as low as 2 to 3 in severe cases, which is easy to corrode and acidify rock and soil, and accelerate the release of heavy metal elements such as lead, arsenic, cadmium, copper, etc. from rock and soil. In...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N13/04
Inventor 凌斯祥巫锡勇李晓宁任勇孙春卫赵思远
Owner SOUTHWEST JIAOTONG UNIV
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