Remediation method for heavy metal polluted soil

A remediation method and soil pollution technology, applied in the field of contaminated soil remediation, can solve the problems of single heavy metal remediation elements, low heavy metal absorption efficiency, and long remediation time, and achieve the effect of increasing selenium content, reducing the risk of polluting agricultural products, and achieving nutrient self-sufficiency

Inactive Publication Date: 2019-02-15
云南惟绿环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] 2. To overcome the problems of low heavy metal absorption efficiency of resistan

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0071] A method for repairing heavy metal soil pollution, specifically comprising the following steps:

[0072] (1), add magnetotactic bacteria culture medium in the heavy metal polluted soil, the addition ratio of magnetotactic bacteria culture medium is to add 50mL magnetotactic bacteria liquid culture medium in every square meter of heavy metal contaminated soil, and in every square meter of heavy metal contaminated soil Inoculate 9.0×10 in the soil 9 A magnetotactic bacterium, plowing the soil with a thickness of 10 cm on the surface of the heavy metal polluted soil, so that the magnetotactic bacterium culture medium, the magnetotactic bacterium and the heavy metal polluted soil are fully mixed;

[0073] (2), cultivated for 45 days, added magnetotactic bacteria culture medium in heavy metal-contaminated soil top layer 3cm thick soil, the addition ratio was to add 30mL magnetotactic bacteria liquid culture medium in every square meter of heavy metal-contaminated soil, and i...

Embodiment 2

[0085] (1), adding the magnetotactic bacteria culture medium to the heavy metal-contaminated soil, the magnetotactic bacteria culture medium addition ratio is to add 80mL magnetotactic bacteria liquid culture medium in every square meter of heavy metal-contaminated soil, and in every square meter of heavy metal-polluted soil Inoculate 1.0×10 in soil 10A magnetotactic bacterium, plow the soil with a thickness of 12 cm on the surface of the heavy metal polluted soil, so that the magnetotactic bacterium culture medium, the magnetotactic bacterium and the heavy metal polluted soil are fully mixed;

[0086] (2), cultivated for 50 days, added magnetotactic bacteria culture medium in heavy metal-contaminated soil top layer 5cm thick soil, the addition ratio was to add 50mL magnetotactic bacteria liquid culture medium in every square meter of heavy metal-contaminated soil, and irrigate this soil, make The heavy metal-contaminated soil is kept in a flooded state, and an energized coil ...

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PUM

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Abstract

The invention discloses a remediation method for heavy metal polluted soil. The method comprises the following steps: (1) adding a magnetotactic bacteria liquid culture medium to the heavy metal polluted soil; inoculating magnetotactic bacteria; and turning over; (2) adding the magnetotactic bacteria liquid culture medium to the heavy metal polluted soil; and arranging a magnetic field; (3) collecting the surface layer of the heavy metal polluted soil; (4) showering the collected heavy metal polluted soil; (5) spreading a soil conditioning agent on the surface of the heavy metal polluted soil;(6) planting heavy metal hyperaccumulators in the heavy metal polluted soil; (7) spraying a heavy metal blocking agent after the hyperaccumulator seeds are formed; and (8) cycling the steps (1) to (7) twice or three times. The method has the advantages of being low in planting difficulty, easy to manage, applicable to remediating of wide-range polluted soil, small in environmental disturbance, and good in soil treatment effect; and moreover, the environment is beautified while the polluted soil is treated; and the popularization is high.

Description

technical field [0001] The invention relates to the technical field of contaminated soil treatment, in particular to a repair method for heavy metal soil pollution. Background technique [0002] Soil is not only an important part of the earth's ecological circle, but also one of the important natural resources that human beings rely on for survival. With the development of industrial activities such as mineral mining and smelting, and agricultural activities such as sewage irrigation, application of sludge and low-quality chemical fertilizers, harmful heavy metals such as Cd and Pb continue to enter the soil environment, causing pollution to normal production and life. Therefore, the control of soil heavy metal pollution is of great significance to the ecological civilization and the healthy life of human beings. [0003] The traditional remediation methods for soil heavy metal pollution are usually physical and chemical methods, such as dilution and soil covering method, v...

Claims

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Application Information

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IPC IPC(8): B09C1/10B09C1/08B09C1/02B09C1/00
CPCB09C1/00B09C1/02B09C1/08B09C1/105B09C2101/00
Inventor 董清国沈兴刚栗霞起江姚明楼罗宗能杨霄栗晓云黄自明
Owner 云南惟绿环保科技有限公司
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