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Biological crust restoration material for promoting ecological restoration of ionic rare earth tailing area, application and restoration method

An ionic rare earth and biological crusting technology, applied in the field of mine ecological restoration, can solve the problems of soil degradation, environmental pollution in mining areas, and reduction of exposed surface layers, etc.

Active Publication Date: 2021-12-31
JIANGXI ACAD OF ECO-ENVIRONMENTAL SCI & PLANNING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In view of this, the object of the present invention is to provide a biological crust restoration material and its application and repair method for promoting the ecological restoration of ion-type rare earth tailings areas. The biological crust restoration material can increase the content of organic matter in the tailings soil and reduce ammonia nitrogen. content, increased the surface crust area of ​​tailings, greatly reduced the exposed surface layer, and improved the problems of soil degradation and environmental pollution in mining areas

Method used

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  • Biological crust restoration material for promoting ecological restoration of ionic rare earth tailing area, application and restoration method
  • Biological crust restoration material for promoting ecological restoration of ionic rare earth tailing area, application and restoration method
  • Biological crust restoration material for promoting ecological restoration of ionic rare earth tailing area, application and restoration method

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preparation example Construction

[0044] In the present invention, the preparation method of the algae suspension preferably comprises the following steps:

[0045] Inoculate the biological crust restoration material in the ion-promoting rare earth tailings area into the culture solution, and cultivate to obtain the algae suspension.

[0046] In the present invention, the nutrient solution is preferably a sterile BG-11 nutrient solution; the composition of the sterilized BG-11 nutrient solution is as shown in Table 1; For special limitations, it is enough to prepare the mother solution according to the formula in Table 1 according to the process well known in the art and mix to form the BG-11 culture solution.

[0047] Table 1 Composition and preparation method of BG-11 culture medium

[0048]

[0049] Note: A5 solution (diluted to 1000mL with water): H 3 BO 3 (61.0 mg); MnSO 4 ·H 2 O (169.0 mg); ZnSO 4 ·7H 2 O (287.0 mg); CuSO 4 ·5H 2 O (2.5mg); (NH 4 )Mo 7 o 24 4H 2 O (12.5 mg).

[0050] Unl...

Embodiment 1

[0055] The biocrust samples formed under natural conditions in the abandoned rare earth mining area of ​​Daluoshi, Wenfeng Town, Xunwu County, Ganzhou City, Jiangxi Province were collected and sterilized with 75% alcohol to prevent cross-contamination of the samples during the collection process. The sterilized samples were Put it in a sterile aluminum box (specification: 50mm×30mm), transport it back to the laboratory, and store it at a low temperature of -4°C; In the 150mL Erlenmeyer flask of -11 culture fluid (composition and preparation method of BG-11 culture fluid are shown in Table 1), after being uniformly dispersed in the homogenizer, it is cultured statically under specific environmental conditions in the light incubator (light and dark Ratio = 16h: 8h, light intensity at 3000lx, temperature at 25°C), after 4 weeks of cultivation, when an obvious algae solution is formed, use a capillary to take 2 μL of the algae solution into a 24-well cell culture containing 2mL of ...

Embodiment 2

[0058] The biocrust samples formed under natural conditions in the abandoned rare earth mining area of ​​Daluoshi, Wenfeng Town, Xunwu County, Ganzhou City, Jiangxi Province were collected and sterilized with 75% alcohol to prevent cross-contamination of the samples during the collection process. The sterilized samples were Put it in a sterile aluminum box (specification: 50mm×30mm), transport it back to the laboratory, and store it at a low temperature of -4°C; In the 150mL Erlenmeyer flask of -11 culture fluid (composition and preparation method of BG-11 culture fluid are shown in Table 1), after being uniformly dispersed in the homogenizer, it is cultured statically under specific environmental conditions in the light incubator (light and dark Ratio = 16h: 8h, light intensity at 3000lx, temperature at 25°C), after 4 weeks of cultivation, when an obvious algae solution is formed, use a capillary to take 2 μL of the algae solution into a 24-well cell culture containing 2mL of ...

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Abstract

The invention belongs to the technical field of ecological restoration of mines, and relates to a biological crust restoration material for promoting the ecological restoration of an ionic rare earth tailing area, application and a restoration method. The biological crust restoration material for promoting the ecological restoration of the ionic rare earth tailing area provided by the invention comprises broadleaf algae and / or indigenous soil algae; the types of the indigenous soil algae comprise cyanobacteria sphingothrix and / or chlorophyta chlamydomonas; the variety of the broadleaf algae comprises nostoc nitrogen fixing and / or microcoleus vaginatus. According to the restoration material, the culture solution of the broadleaf algae and the indigenous soil algae is applied to the soil of an ion type rare earth tailing area to be repaired, the content of organic matter in the tailing soil can be remarkably increased, the ammonia nitrogen content is reduced, the crust area of a tailing surface layer is increased, an exposed surface layer is greatly reduced, the extremely degraded ecological environment of the ionic rare earth abandoned mining area caused by abandoned tailings can be quickly improved, and the soil degradation and environmental pollution of the mining area caused by the mining of the rare earth mine can be improved.

Description

technical field [0001] The invention belongs to the technical field of mine ecological restoration, and in particular relates to a biocrust restoration material for promoting ecological restoration of an ion-type rare earth tailings area and its application and restoration method. Background technique [0002] Ionic rare earths are national strategic resources, non-renewable, and are widely used in national defense construction and high-tech fields. The mining of ionic rare earths creates high profits while causing a series of ecological and environmental problems such as the destruction of vegetation and land resources, water and soil pollution, such as: loose soil, severe soil desertification, and the phenomenon of barren grass (known as "Southern Desert"). In the rainy season in the south, water and soil erosion is also prone to occur, resulting in a large number of abandoned slopes, unstable slopes, bare surfaces, and lack of vegetation, causing serious geological disast...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B09C1/10
CPCB09C1/10Y02A40/80
Inventor 张萌刘燕冯兵姚娜吴俊伟刘足根李铭书王强周慜
Owner JIANGXI ACAD OF ECO-ENVIRONMENTAL SCI & PLANNING
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