Method for remedying uranium tailing radioactivity and heavy metal contaminated soil by utilizing biotechnology

A technology of polluted soil and biotechnology, applied in the field of bioremediation of uranium tailings radioactive and heavy metal polluted soil, can solve problems such as ecological security, harm to people's life and social stability, harm to the production and life of local residents, and environmental pollution of water sources. Low maintenance cost, easy operation and high biomass effect

Inactive Publication Date: 2019-01-18
SOUTHWEAT UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

On the one hand, a small amount of uranium minerals mixed in waste rocks are continuously released 222 Rn, in addition, most of the uranium tailings in my country are close to river basins. As artificial loose piles with high potential energy, waste rocks will be lost under the action of rainwa...

Method used

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Examples

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Effect test

Embodiment 1

[0014] A method for remediating uranium tailings radioactive and heavy metal polluted soil by using biotechnology, the technical steps included are: the first step, selecting uranium and associated heavy metal enriched plants; the second step, uranium and associated heavy metal enrichment plant seeds pre-processing Treatment; third step, planting of uranium and associated heavy metal enrichment plants; fourth step, promotion of uranium and associated heavy metal enrichment in plants: fifth step, uranium and associated heavy metal enriched plants to rapidly reduce volume and minimize weight.

[0015] In the first step, the selected uranium and associated heavy metal-enriching plants consisted of a combination of red amaranth, sudangrass and mustard.

[0016] In the second step, uranium and associated heavy metal enrichment plant seeds are pretreated, and the selected seeds are treated with a seed coating agent, which is conducive to the germination and growth of seeds under the ...

Embodiment 2

[0021] A method for remediating uranium tailings radioactive and heavy metal polluted soil by using biotechnology, the technical steps included are: the first step, selecting uranium and associated heavy metal enriched plants; the second step, uranium and associated heavy metal enrichment plant seeds pre-processing Treatment; third step, planting of uranium and associated heavy metal enrichment plants; fourth step, promotion of uranium and associated heavy metal enrichment in plants: fifth step, uranium and associated heavy metal enriched plants to rapidly reduce volume and minimize weight.

[0022] In the first step, the selected uranium and associated heavy metal-enriching plants consisted of a combination of wormwood, fenugreek, nightshade, castor bean and lotus seed grass.

[0023] In the second step, uranium and associated heavy metal enrichment plant seeds are pretreated, and the selected seeds are treated with a seed coating agent, which is conducive to the germination a...

Embodiment 3

[0028] A method for remediating uranium tailings radioactive and heavy metal polluted soil by using biotechnology, the technical steps included are: the first step, selecting uranium and associated heavy metal enriched plants; the second step, uranium and associated heavy metal enrichment plant seeds pre-processing Treatment; third step, planting of uranium and associated heavy metal enrichment plants; fourth step, promotion of uranium and associated heavy metal enrichment in plants: fifth step, uranium and associated heavy metal enriched plants to rapidly reduce volume and minimize weight.

[0029] In the first step, the selected uranium and associated heavy metal-enriching plants consisted of a combination of Wolfberry, Houttuynia cordata, Pokeweed, Pennisetum, Switchgrass, Digum chinensis, Iron broom and Chia vine.

[0030]In the second step, uranium and associated heavy metal enrichment plant seeds are pretreated, and the selected seeds are treated with a seed coating agent...

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Abstract

The invention discloses a method for remedying uranium tailing radioactivity and heavy metal contaminated soil by utilizing a biotechnology. The method comprises the technical steps of: a first step of selecting uranium and associated heavy metal enriched plants; a second step of preprocessing seeds of the uranium and associated heavy metal enriched plants; a third step of planting the uranium andassociated heavy metal enriched plants; a fourth step of prompting uranium and associated heavy metal enrichment of the plants; and a fifth step of carrying out rapid volume reduction, weight reduction and minimization processing on the uranium and associated heavy metal enriched plants. The method for biologically remedying the uranium tailing radioactivity and heavy metal contaminated soil is advanced in technology, easy to operate, convenient to operate and low in cost, and provides a new technical approach for radioactivity and heavy metal double contaminated soil in regions of uranium tailings, a uranium waste-rock yard, an ex-service uranium mine and the like.

Description

technical field [0001] The invention relates to the technical field of bioremediation of contaminated soil, in particular to a method for bioremediation of uranium tailings radioactive and heavy metal contaminated soil. It is suitable for comprehensive treatment of radioactive and heavy metal double pollution environments such as uranium tailings, uranium waste rock yards and uranium mine decommissioned areas. Background technique [0002] With the rapid development of the world economy, environmental protection and the continuous depletion of fossil energy, large-scale nuclear energy development and utilization has become an inevitable choice. The ever-accelerating process of exploration and mining of uranium resources has produced a huge amount of uranium tailings and uranium waste ore piles. The lack of vegetation coverage in the uranium tailings storage area results in soil erosion and dust, which spreads uranium and associated heavy metal pollutants. According to stat...

Claims

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Application Information

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IPC IPC(8): B09C1/10B09C1/08B09C1/00
CPCB09C1/00B09C1/08B09C1/10
Inventor 罗学刚唐永金王懋林
Owner SOUTHWEAT UNIV OF SCI & TECH
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