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Method for soil heavy metal pollution remediation through grass family with enrichment capacity

A technology for gramineous plants and soil repair, which is applied in the field of gramineous plants to enrich and repair heavy metal pollution in soil. It can solve problems that have not been reported, and achieve the effects of low cost, increased root mass, and increased burial height.

Inactive Publication Date: 2014-03-05
EAST CHINA NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

So far, a large number of studies have shown that some grasses have the ability to absorb and enrich soil heavy metals, but how to further improve the ability of grasses to absorb and enrich soil heavy metals is still in the early stage of research, and related technologies have not been reported

Method used

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  • Method for soil heavy metal pollution remediation through grass family with enrichment capacity
  • Method for soil heavy metal pollution remediation through grass family with enrichment capacity
  • Method for soil heavy metal pollution remediation through grass family with enrichment capacity

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] a) Prior detection of soil heavy metal content:

[0053] Multi-point layered sampling is carried out on the soil containing heavy metals that needs to be repaired, and the distribution level and content of heavy metals are detected by atomic absorption spectroscopy. After testing get:

[0054] C f i 4.61, exceeding 1≤C f i <3 The upper limit of the qualified interval;

[0055] C d 21.1, exceeding 8≤C d <16 is the upper limit of the qualified interval;

[0056] E. r i 106, exceeding 40≤E r i <80 determines the upper limit of the qualified interval;

[0057] RI is 340, which exceeds the upper limit of the qualified range of 150≤RI<300;

[0058] After a comprehensive analysis, it is concluded that the heavy metal content in the soil exceeds the standard and needs to be treated.

[0059] b) Cultivation of the land:

[0060] refer to figure 1 , figure 2 , the heavy metal soil was cultivated into a strip-shaped field separated by several furrows and large ri...

Embodiment 2

[0077] a) Prior detection of soil heavy metal content:

[0078] Multi-point layered sampling is carried out on the soil containing heavy metals that needs to be repaired, and the distribution level and content of heavy metals are detected by atomic absorption spectroscopy. After testing get:

[0079] C f i 5.73, out of 1≤C f i <3 The upper limit of the qualified interval;

[0080] C d 18.3, exceeding 8≤C d <16 is the upper limit of the qualified interval;

[0081] E. r i 96, exceeding 40≤E r i <80 determines the upper limit of the qualified interval;

[0082] RI is 321, which exceeds the upper limit of the qualified range of 150≤RI<300;

[0083] After a comprehensive analysis, it is concluded that the heavy metal content in the soil exceeds the standard and needs to be treated.

[0084] b) Cultivation of the land:

[0085] refer to figure 1 , figure 2 , the heavy metal soil was cultivated into a strip-shaped field separated by several furrows and large ridges...

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Abstract

The invention discloses a method for soil heavy metal pollution remediation through grass family with enrichment capacity, which is characterized by including the following steps: a) detection in advance for heavy metal content of soil; b) soil cultivation; c), selection and cultivation of grass family; d) groove backfill and young ear uprooting; e), process detection of heavy metal content; f) plant stem recovery; and g) final detection of heavy metal content. The method improves burying height of plant stems of the grass family and root quantity of plants to improve the absorption and enrichment of plants to soil heavy metal pollution, and has the advantages of low cost, safety, reliability, and remarkable remediation effect on heavy metal pollution.

Description

technical field [0001] The invention relates to the technical field of environmental treatment, in particular to a method for enriching and repairing soil heavy metal pollution with gramineous plants. Background technique [0002] Soil heavy metal pollution has become a common type of pollution in China and some other countries and regions. In the area where it occurs, the product quality of various planting and breeding industries, and even the health and life safety of humans and other creatures have been directly damaged or potentially threatened to varying degrees. Heavy soil pollution has its particularity, and it is very difficult to control it. For a long time, people have been committed to finding fast, effective, and low-cost governance approaches and methods, but such solutions are still under constant exploration. Soil mulching and chemical cleaning methods are not easy to implement due to their high cost and potential for secondary pollution and degradation...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B09C1/00
Inventor 李德志李经纶秦艾丽
Owner EAST CHINA NORMAL UNIV
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