Method for restoring vanadium-ore-polluted soil with bacillus-subtilis-reinforced Indian rorippa herbs

A technology of bacillus subtilis and polluted soil, which is applied in the field of remediation of vanadium ore polluted soil, can solve the problems of harm, pollution, and less research on soil remediation, and achieve the effects of wide growth range, increased enrichment amount, and easy promotion

Active Publication Date: 2017-06-30
HARBIN NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Although vanadium is used in many industries, the environmental pollution caused by waste residue, waste water and waste gas during the process of extracting vanadium cannot be underestimated.
If the vanadium content in the soil exceeds the standard, through the food chain, vanadium will cause harm to animals, plants and ourselves. However, at this stage, there are few researches on the remediation of vanadium mine contaminated soil at home and abroad.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0036] Specific implementation mode one: the present embodiment utilizes Bacillus subtilis to strengthen the method for repairing vanadium ore polluted soil by using bacillus subtilis, comprising the following steps:

[0037] 1. Mix the Bacillus subtilis bacterial agent and water according to the mass ratio of 1:1000 to make a bacterial liquid, select the seeds of Rorippa indica (L) Hiern., and soak the seeds of Rorippa indica (L) Hiern. in the bacterial liquid for 10-24 hours;

[0038] Or mix the Bacillus subtilis bacterial agent and water according to the mass ratio of 1:100 to make a bacterial liquid, and soak the seeds of Potassium subtilis in the bacterial liquid for 0.5-3 hours;

[0039] 2. Then take out the seeds of the saponaria, air-dry them naturally, and then sow them in the soil polluted by vanadium mines. After repairing for a certain period of time, remove the saponaria as a whole from the soil.

[0040] The natural air-drying of saponin seeds is to avoid sun exp...

specific Embodiment approach 2

[0043] Specific implementation mode two: the difference between this implementation mode and specific implementation mode one is: before sowing the seeds of the succulents, the vanadium ore contaminated soil will be conventionally prepared, the depth of soil plowing is 10-30cm, and the seeds are sown in a drill , the sowing rate is 6-15kg per mu; the amount of fertilizer is 0-5 times the weight of the seeds. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0044] Embodiment 3: This embodiment differs from Embodiment 1 or Embodiment 2 in that: in the soil polluted by the vanadium ore, the concentration of vanadium is less than 750 mg / kg. Others are the same as in the first or second embodiment.

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PUM

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Abstract

The invention provides a method for restoring vanadium-ore-polluted soil with bacillus-subtilis-reinforced Indian rorippa herbs and relates to the method for restoring the vanadium-ore-polluted soil. A first method for restoring the vanadium-ore-polluted soil with the bacillus-subtilis-reinforced Indian rorippa herbs includes the steps that (1) a bacillus subtilis bacterium agent is mixed with water to be prepared into a bacterium liquid, and Indian rorippa herb seeds are soaked in the bacterium liquid; (2), the Indian rorippa herb seeds are taken out, dried in air and sowed in the vanadium-ore-polluted soil, and after restoring is performed for certain time, the Indian rorippa herbs are removed out of the soil as a whole. A second method for restoring the vanadium-ore-polluted soil with the bacillus-subtilis-reinforced Indian rorippa herbs includes the steps that in the sprouting stage of the Indian rorippa herbs, the bacillus subtilis bacterium agent is mixed with the water to be prepared into the bacterium liquid, the bacterium liquid is sprayed into the vanadium-ore-polluted soil, after restoring is performed for certain time, the Indian rorippa herbs are removed out of the soil as a whole. In the growth process of the Indian rorippa herbs, vanadium and associated heavy metal of the vanadium in the soil are transferred into the Indian rorippa herb plant bodies gradually, and the vanadium and the associated heavy metal of the vanadium in the soil are finally removed by removing the Indian rorippa herbs out of the soil as a whole. The method is used for restoring the vanadium-ore-polluted soil.

Description

technical field [0001] The invention relates to a method for remediating soil polluted by vanadium mines. Background technique [0002] Vanadium (V) is a transition element. Vanadium is mainly associated with vanadium-potassium uranium ore, sulfur-vanadium-copper ore, vanadium-lead ore and other minerals. The total amount of metal vanadium resources in the world is about 41.3 million tons, of which my country's vanadium resource reserves rank third in the world. Vanadium is widely used in steel, non-ferrous metals, ceramics, pigments, electronic technology and other industries. [0003] Although vanadium is used in many industries, the environmental pollution caused by waste residue, waste water, and waste gas during the process of extracting vanadium cannot be underestimated. If the vanadium content in the soil exceeds the standard, vanadium will cause harm to animals, plants and ourselves through the food chain. However, at this stage, there are few researches on the rem...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B09C1/00B09C1/10
CPCB09C1/10B09C1/105B09C2101/00
Inventor 王继华丁旭彤
Owner HARBIN NORMAL UNIVERSITY
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