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An experimental device for studying earthworms to remediate heavy metal-contaminated soil in lead-zinc mining areas

A technology of contaminated soil and experimental equipment, applied in the field of soil remediation, can solve problems such as lack of perfection, and achieve the effect of convenient operation, reasonable structure design, and rapid and effective adjustment

Active Publication Date: 2022-01-18
NANJING INST OF ENVIRONMENTAL SCI MINIST OF ECOLOGY & ENVIRONMENT OF THE PEOPLES REPUBLIC OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Before taking soil remediation measures, a series of experiments need to be carried out to ensure the feasibility of the scheme, and to be able to find problems in the experiments, so that these problems can be avoided in the actual operation process, and the loss of financial and material resources is avoided. There is no relatively complete experimental equipment that can be used to study the remediation of heavy metal-contaminated soil in lead-zinc mining areas by earthworms

Method used

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  • An experimental device for studying earthworms to remediate heavy metal-contaminated soil in lead-zinc mining areas
  • An experimental device for studying earthworms to remediate heavy metal-contaminated soil in lead-zinc mining areas
  • An experimental device for studying earthworms to remediate heavy metal-contaminated soil in lead-zinc mining areas

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] The experimental device used to study earthworm remediation of heavy metal-contaminated soil in lead-zinc mining areas, such as figure 1 As shown, it includes an inner casing 10 with an upward opening, wrapping an outer casing 11 arranged outside the inner casing 10, and an experimental accommodation mechanism 20 fixed inside the inner casing 10;

[0042] The experimental housing mechanism 20 includes a support ring 21 fixedly connected to the inner bottom of the inner housing 10, and the top of the support ring 21 is fixed with a housing housing 22 with an upward opening;

[0043] Such as figure 1 As shown, the bottom surface of the housing 22 has a certain upward concave arc, and the bottom of the housing 22 is fixed with a plurality of guide bars 221 extending from the center to the edge.

[0044] The inner bottom of the inner housing 10 is located in the support ring 21 and is fixed with a sealing housing 25 with an opening downward. The sealing housing 25 is locat...

Embodiment 2

[0056] The experimental device used to study earthworm remediation of heavy metal-contaminated soil in lead-zinc mining areas, such as figure 1 As shown, it includes an inner casing 10 with an upward opening, wrapping an outer casing 11 arranged outside the inner casing 10, and an experimental accommodation mechanism 20 fixed inside the inner casing 10;

[0057] The experimental housing mechanism 20 includes a support ring 21 fixedly connected to the inner bottom of the inner housing 10, and the top of the support ring 21 is fixed with a housing housing 22 with an upward opening;

[0058] Such as figure 1 As shown, the bottom surface of the housing 22 has a certain upward concave arc, and the bottom of the housing 22 is fixed with a plurality of guide bars 221 extending from the center to the edge.

[0059] The inner bottom of the inner housing 10 is located in the support ring 21 and is fixed with a sealing housing 25 with an opening downward. The sealing housing 25 is locat...

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Abstract

The invention discloses an experimental device for studying earthworms repairing heavy metal-contaminated soil in a lead-zinc mining area. Experimental accommodation mechanism, the experimental accommodation mechanism includes a support ring fixedly connected to the bottom of the inner shell, the top of the support ring is fixed with an upward opening accommodation shell, between the inner shell and the outer shell Filled with soundproofing and insulating material. The device of the present invention can control the temperature and humidity in the device to simulate and adjust the living environment of earthworms, and can also simulate the external environment by controlling temperature and humidity. It can not only increase the ventilation to supplement the oxygen content in the soil, but also adjust the temperature properly through the compressed air with a lower temperature. Part of the air passes through the soil from the bottom to the top through the ventilation micropores to adjust the oxygen content in the soil.

Description

technical field [0001] The invention relates to the technical field of soil restoration, in particular to an experimental device for studying earthworm restoration of heavy metal-contaminated soil in lead-zinc mining areas. Background technique [0002] Due to human activities, the content of trace metal elements in the soil exceeds the standard value. Among the heavily polluted pollutants, heavy metals are the main source of pollution. Excessive deposition causes the content of heavy metals in the soil to be too high, leading to heavy metal pollution in the soil. Soil remediation is a technical measure to restore contaminated soil to normal functions. In the soil remediation industry, there are more than one hundred existing soil remediation technologies, and there are more than ten commonly used technologies, which can be roughly divided into three types: physical, chemical and biological. Many countries have formulated and carried out contaminated soil treatment and reme...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B09C1/10
CPCB09C1/10
Inventor 郑丽萍王国庆
Owner NANJING INST OF ENVIRONMENTAL SCI MINIST OF ECOLOGY & ENVIRONMENT OF THE PEOPLES REPUBLIC OF CHINA
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