Large tailing pond side slope heavy metal ecological restoration system and application

A technology for ecological restoration and tailings ponds, which is applied in mining wastewater treatment, climate change adaptation, biological water/sewage treatment, etc., can solve the problems of heavy metal pollution control and poor ecological restoration, and achieve the purpose of inhibiting the migration of heavy metal pollutants, Improve the effect of ecological restoration and pollution control, and realize the improvement of ecosystem functions

Pending Publication Date: 2020-09-18
NANJING INST OF ENVIRONMENTAL SCI MINIST OF ECOLOGY & ENVIRONMENT OF THE PEOPLES REPUBLIC OF CHINA
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] Aiming at the problem of poor effects of heavy metal pollution control and ecological restoration of tailings ponds in the prior art, a large-scale tailings pond slope heavy metal ecological restoration system of the present invention, by setting a slope restoration module and a constructed wetland restoration module, And limit their respective specific structures and the length relationship between them, establish an ecological restoration system for the slope of the tailings pond and its extended area at the bottom of the slope, and at the same time inhibit the migration of heavy metal pollutants on the slope of the tailings pond, realize the Ecosystem function improvement of slope and its buffer zone

Method used

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  • Large tailing pond side slope heavy metal ecological restoration system and application

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Embodiment 1

[0041] The heavy metal ecological restoration system of a large tailings pond slope of the present invention is set on the tailings pond slope and the extension area at the bottom of the slope, such as figure 1 As shown, including the slope restoration module 100 and the constructed wetland restoration module 200, the total length of the slope restoration module 100 is L, and the total length of the slope is L 0 , L:L 0 =1:1.2-1:1.3. The total length of the slope repair module 100 is smaller than the total length of the slope, which facilitates the installation of auxiliary facilities and reduces repair costs. The distance from the end of the constructed wetland restoration module 200 away from the slope restoration module 100 to the slope restoration module 100 is D, D:L=0.6:1-0.7:1, this design can make the constructed wetland module 200 suitable for the slope restoration module 100 pollutant treatment capacity, and coordinate the watering water volume required for subsequ...

Embodiment 2

[0054] The basic content of this embodiment is the same as that of Embodiment 1, except that the slope repair module 100 of the slope is provided with a fiber blanket layer, and plants are planted on the fiber blanket layer, and the planted plants are trees, shrubs or herbaceous plants. one or more. Laying fiber blankets on the slope can improve the wind erosion resistance and erosion resistance of the slope repair module. The nutrients in the fiber blanket have a long storage time, which can provide a base for the sowing and growth of grass seeds and improve the ecological restoration ability of the system.

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Abstract

The invention relates to the field of mine ecological restoration and environmental governance, in particular to a large tailing pond side slope heavy metal ecological restoration system and application. By arranging a slope restoration module and a constructed wetland restoration module and limiting the specific structures of the slope restoration module and the constructed wetland restoration module and the length relation between the slope restoration module and the constructed wetland restoration module, a tailing pond side slope and slope bottom extension area ecological restoration system is established. After the dam body side slope is safely reinforced and land is renovated, subsequent plant planting is facilitated; the bottom mud and soil of the constructed wetland restoration module is subjected to ecological remediation in a specific period, and a remediation agent is biochar prepared from plants. The ecological system function of the tailing pond side slope and the buffer area of the tailing pond side slope is improved while migration of heavy metal pollutants of the tailing pond side slope is inhibited, ecological resources are recycled, the remediation cost is saved,and the effects of ecological remediation and pollution treatment of the tailing pond are further improved.

Description

technical field [0001] The invention relates to the field of mine ecological restoration and environmental governance, in particular to a heavy metal ecological restoration system and application of a large tailing pond slope. Background technique [0002] Tailings pool refers to the place used to store metal and non-metal mines for mine sorting and discharge tailings. Tailings pond is a dangerous source of man-made debris flow with high potential energy, while metal ore tailings pond is a natural source of heavy metal pollution. For more than ten years or even decades, various natural and man-made unfavorable factors will directly threaten its safety. Facts have repeatedly shown that once the tailings pond fails, it will definitely cause serious losses to the lives and properties of people downstream. [0003] Acidic wastewater from tailings ponds contains a large amount of heavy metal ions such as copper, lead, zinc, cadmium, mercury, arsenic, manganese, and chromium. I...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/32E02D17/20C02F103/10
CPCC02F3/32C02F2001/007C02F2103/10E02D17/20Y02A40/22
Inventor 李海东王楠马伟波赵立君张孝飞高媛赟李辉
Owner NANJING INST OF ENVIRONMENTAL SCI MINIST OF ECOLOGY & ENVIRONMENT OF THE PEOPLES REPUBLIC OF CHINA
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