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Application of malva for remediation of cadmium and lead pollution of mine soil and sludge

A technology of heavy metals and mallow, applied in the restoration of polluted soil, biological sludge treatment, etc., can solve the problems of insufficient plant species resources, etc., and achieve the effect of fast natural reproduction and strong wind diffusion ability

Inactive Publication Date: 2011-08-24
SICHUAN AGRI UNIV +4
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the purpose of the present invention is exactly to the above-mentioned problem that can be used for the insufficient plant variety resource of soil heavy metal pollution bioremediation, provides a kind of application of new plant variety mallow in the cadmium of repairing mine soil and sludge, lead heavy metal pollution

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Present embodiment is the application of mallow in the cadmium of repairing mine soil, lead heavy metal pollution, and its specific way is:

[0018] By direct transplanting, under natural conditions, Malvaceae Malvaceae was planted in the soil polluted by heavy metals in the southern mining area of ​​Kangding County, Ganzi Prefecture, Sichuan Province. Malva sinensis Cavan);

[0019] Harvest the aerial part of the plant after 3 months, and measure wherein the weight percent content of two kinds of heavy metals of Cd and Pb is respectively: 110.8 mg kg -1 , 582.9 mg kg -1 .

Embodiment 2

[0021] Present embodiment is the application of mallow in the cadmium of remediation sludge, lead heavy metal pollution, and its concrete practice is:

[0022] Using the method of direct seeding under natural conditions, Malvaceae Malvaceae was planted in the heavy metal-polluted sludge of the Mazhong lead-zinc mining area in Yajiang, Sichuan Province. Malva sinensis Cavan);

[0023] Harvest the aerial part of the plant after 85 days, and measure wherein the weight percentages of two kinds of heavy metals of Cd and Pb are respectively: 100.6 mg kg -1 , 502.8 mg kg -1 .

[0024] Visible by above-mentioned embodiment 1 and 2, the present invention can obviously absorb heavy metals such as Cd, Pb in the polluted soil by planting mallow in heavy metal polluted mine soil or sludge, thereby reach effectively repairing mine soil and sludge heavy metal purpose of pollution.

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Abstract

The invention discloses application of malva to remediation of cadmium and lead pollution of mine soil and sludge, which is characterized by planting malva in the mine soil or sludge polluted by heavy metals. The invention has the following beneficial effects: the malva is planted in the mine soil or sludge by utilizing the enrichment characteristics of malva toward cadmium, lead and other heavy metals, and can absorb the accumulated heavy metals such as cadmium, lead, etc, and most malva is transported above the ground to achieve the aim of remediating heavy metal pollution of mine soil and sludge; the malva dispenses with special management in the growth process, thus the cost is lower and the operability is strong; and meanwhile, the invention develops new plant resource varieties for remediation of plants polluted by heavy metals in the mine oil and sludge and brings new progress and development space for deep development of plant remediation technology.

Description

technical field [0001] The invention relates to the technical field of remediation of heavy metal pollution in the environment, in particular to the application of a plant mallow in remediation of cadmium and lead heavy metal pollution in mine soil and sludge. Background technique [0002] Heavy metal (such as cadmium Cd, lead Pb, etc.) pollution in the environment has the characteristics of concealment, long-term, and irreversibility. The pollutants have poor mobility in the medium, long residence time, cannot be degraded by microorganisms, and can be passed through the food chain. It will affect human health and cause immeasurable impact. [0003] The current methods of remediating heavy metal pollution mainly include engineering remediation, physical and chemical remediation, bioremediation (phytoremediation and microbial remediation), and agricultural ecological restoration. These methods have their own characteristics and can reduce the pollution of heavy metals to a c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B09C1/00B09C1/10C02F11/02
Inventor 张世熔陈明英李婷徐小逊
Owner SICHUAN AGRI UNIV
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