Ecological landscape construction method of stopping and controlling non-point source pollution of multi-metal tailings

A non-point source pollution and ecological landscape technology, applied in the field of environmental management, can solve problems that have not yet been discovered, and achieve the effects of low price, control of wind erosion, and simple preparation process

Active Publication Date: 2017-04-19
SHENZHEN TECHAND ECOLOGY & ENVIRONMENT CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

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  • Ecological landscape construction method of stopping and controlling non-point source pollution of multi-metal tailings
  • Ecological landscape construction method of stopping and controlling non-point source pollution of multi-metal tailings
  • Ecological landscape construction method of stopping and controlling non-point source pollution of multi-metal tailings

Examples

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Embodiment 1

[0028] refer to figure 1 , figure 1 It is the cross-sectional view of the ecological landscape structure for preventing and controlling non-point source pollution of multiple metal tailings reservoirs in Example 1. This embodiment provides a method for constructing an ecological landscape for preventing and controlling non-point source pollution of multiple metal tailings reservoirs. A barrier layer 1 is provided around the reservoir 2 to prevent the heavy metals in the tailings reservoir 2 from migrating outward; a heavy metal stabilizer is applied to the upper part of the tailings reservoir 2 to mix and stabilize to form a layer of heavy metal stabilization layer 3. The thickness of the stabilizing layer 3 is 10cm, and the applied mass of the heavy metal stabilizer accounts for 3% of the mass of the tailings. The heavy metal stabilizer is obtained by modifying the acetic acid / acetic anhydride solution of Er Yuelan, and the specific preparation The steps are: pulverize Er Yu...

Embodiment 2

[0035] This example is basically the same as Example 1, except that the specific preparation steps of the heavy metal stabilizer are: mix acetic acid and acetic anhydride with a volume ratio of 0.5:1, pour into water for dilution, and obtain acetic acid / acetic anhydride Acid anhydride solution, the total fraction of acetic acid and acetic anhydride in the acetic acid / acetic anhydride solution is 5%, put the pulverized Erzulan in the acetic acid / acetic anhydride solution and soak for 12h, take out the Erzuli, 35°C drying. The application mass of the heavy metal stabilizer accounts for 5% of the tailings mass, the thickness of the heavy metal stabilization layer 3 is 15 cm, and the thickness of the soil layer is 15 cm.

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Abstract

The invention discloses an ecological landscape construction method of stopping and controlling non-point source pollution of multi-metal tailings. Firstly, a barrier layer is arranged on the periphery of a tailing to prevent heavy metals in the tailing from migrating outwardly. Then a heavy metal stabilizing agent is applied to the upper layer part of the tailing and mixed stably to form a heavy metal stabilization layer. The heavy metal stabilizing agent is obtained through modification of Orychophragmus violaceus by means of acetic acid / acetic anhydride solution. The heavy metal stabilization layer is covered with a soil layer mixed with a soil amendment. Plants with high resistance to heavy metals are planted in the soil layer. The heavy metal stabilizing agent uses cheap raw materials and is simple in preparation technology. Through thiol modification of the Orychophragmus violaceus, the Orychophragmus violaceus has good heavy metal adsorption performance and can adsorb and stabilize the heavy metals in the tailing. The effect is good and the price is low. Besides, the method can establish a stable, safe and self-sustaining vegetation community in the tailing and effectively control migration and diffusion of heavy metal pollutants.

Description

technical field [0001] The invention relates to the technical field of environmental treatment, in particular to a method for constructing an ecological landscape for preventing and controlling non-point source pollution of multiple metal tailings reservoirs. Background technique [0002] Non-ferrous metals have been mined since the Western Han Dynasty, with a history of more than 2,000 years. Mining has long been a pillar industry in China. The mining industry has brought about economic development. However, as a kind of mining wasteland, the tailings wasteland generated after mining not only occupies a large amount of land, but also destroys a large area of ​​vegetation and landscape, resulting in the disappearance of a large number of species and biodiversity. The ecological system has been degraded and the local ecological environment has been seriously damaged. In addition, tailings contain a large amount of heavy metals (lead, chromium, cadmium, arsenic, mercury, etc....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01G1/00A01G17/00
CPCA01G17/005A01G22/00
Inventor 裴东辉林晓燕唐彪黄雷李红艳刘登彪宋凤鸣吴志彭昭良赵亮周巍许建新
Owner SHENZHEN TECHAND ECOLOGY & ENVIRONMENT CO LTD
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