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Method for restoring heavy metal zinc-lead-copper polluted soil by ageratina adenophora

A technology of E. japonica and heavy metals, which is applied in the field of bioremediation, can solve the problems of remediation and restoration of soil contaminated with heavy metals, and achieves the effects of improving tolerance and enrichment capacity, high efficiency, and improving soil restoration efficiency.

Inactive Publication Date: 2018-12-28
HUNAN XISI ECOLOGY TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method is only suitable for heavy metals with relatively low boiling points, such as mercury and lead, etc.
The soil washing technology is to wash the polluted soil with water to wash away the heavy metal ions in the form of an aqueous solution. This method is only applicable to a small area of ​​polluted soil.
It can be seen that the above traditional methods are not suitable for the treatment and remediation of heavy metal-contaminated soil in large areas.

Method used

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  • Method for restoring heavy metal zinc-lead-copper polluted soil by ageratina adenophora
  • Method for restoring heavy metal zinc-lead-copper polluted soil by ageratina adenophora

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Embodiment 1; Soil remediation test in polluted area

[0040] The test site is the historical lead-zinc slag field in Dongjiang Lake District, Hunan Province. The specific test method is as follows: select an area in the polluted area, implement multi-point layered sampling on the soil containing heavy metals zinc, lead, and copper that needs to be repaired in the polluted area, and use atomic absorption spectroscopy to detect the distribution level and content of heavy metals to detect the area. The average content of heavy metal zinc, lead and copper in the surface 15cm deep soil is 240mg / kg, 1400mg / kg and 52mg / kg;

[0041] Further, the soil in this area is plowed and loosened, leveled, and then the irrigation ditch is dug out, and an irrigation ditch is dug at an interval of 80cm. The width and depth of the irrigation ditch are 10cm*10cm; Dig out 5cm deep planting pits, then apply base fertilizers such as nitrogen, phosphorus and potassium in the planting pits, then...

Embodiment 2

[0045] Example 2: Soil remediation test in polluted area

[0046] The test site is the lead-zinc tailings sand field in Dongpo, Chenzhou, Hunan Province. The specific test method is as follows: select an area in the polluted area, implement multi-point layered sampling on the soil containing heavy metals zinc, lead, and copper that needs to be repaired in the polluted area, and use atomic absorption spectroscopy to detect the distribution level and content of heavy metals to detect the area. The average content of heavy metal zinc, lead and copper in the surface 15cm deep soil is 257mg / kg, 1502mg / kg and 56mg / kg;

[0047] Further, the soil in this area is plowed and loosened, leveled, and then the irrigation ditch is dug out, and an irrigation ditch is dug at an interval of 80cm. The width and depth of the irrigation ditch are 10cm*10cm; Dig out 5cm deep planting pits, then apply base fertilizers such as nitrogen, phosphorus and potassium in the planting pits;

[0048] The se...

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Abstract

The invention provides a method for restoring heavy metal zinc-lead-copper polluted soil by ageratina adenophora. According to the technical scheme, the ageratina adenophora is selected as a plant repair variety, wherein the ageratina adenophora is a plant capable of growing in the polluted area preponderantly, and has the remarkable resistance and enrichment capability on heavy metal zinc, lead and copper in the polluted area; heavy metal zinc, lead and copper polluted area soil is restored based on the heavy metal enrichment capability of the ageratina adenophora; the ageratina adenophora isalso inoculated with a deep-color space endophytic fungus and a branch fungus root fungus, wherein the two kinds of fungus can effectively improve the tolerance and enrichment capability of the ageratina adenophora on heavy metals, so that the soil restoring efficiency of the ageratina adenophora is improved. The method is low in cost, high in efficiency and easy to operate, and the plantation process of the ageratina adenophora is strictly controlled, so that the biological hazard of the ageratina adenophora on the peripheral region of the polluted area is prevented.

Description

technical field [0001] The invention relates to the technical field of bioremediation of heavy metal pollution in the environment of polluted areas, in particular to a method for Eupatoria adenophorum in repairing heavy metal zinc, lead and copper contaminated soil. Background technique [0002] The development and utilization of mineral resources, while bringing huge economic benefits to the society, also caused environmental pollution. In the mining of lead-zinc mining areas, the direct discharge of mining wastewater and mineral processing waste liquid, as well as the stacking and leaching of waste rocks and tailings slag, have accumulated a large amount of heavy metals in the mining area and the surrounding soil, which not only caused the soil quality in the mining area to decline, and the ecological system Degradation, crop production reduction, and serious threats to human health, so the treatment and restoration of mine polluted areas has become a major problem to be s...

Claims

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Application Information

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IPC IPC(8): B09C1/10
CPCB09C1/105B09C2101/00
Inventor 张卫刘加力杨美银王勇坚莫海军
Owner HUNAN XISI ECOLOGY TECH
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