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Bioremediation method for soil polluted by heavy metal lead cadmium and base on kosteletzkya virginica

A cadmium-contaminated soil and bioremediation technology is applied in the field of heavy metal lead-cadmium-contaminated soil bioremediation based on seaside mallow. The effect of reducing stability and promoting absorption

Active Publication Date: 2017-04-26
HENAN INST OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention provides a method for bioremediation of heavy metal lead and cadmium contaminated soil based on seaside mallow, which solves the problem that the existing heavy metal lead and cadmium contaminated soil repair technology is expensive, the repair period is long, the site structure is easily damaged, the physical and chemical properties of the soil are changed, and the The problem of secondary pollution

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] A method for bioremediation of heavy metal lead and cadmium contaminated soil based on seaside mallow, comprising the steps of:

[0030] Step 1, preparing mixed soil: crush river sand, humus soil and garden soil respectively, mix them evenly according to the mass ratio of 3:3:4, pass through a sieve with a mesh diameter of 2mm, and obtain mixed soil;

[0031] Step 2, preparing nutrient soil: adding effective viable bacteria to every kilogram of mixed soil is 1×10 8 25g of young capsule mycotic agent per g, the effective number of viable bacteria is 3×10 8 Each / mL of Bacillus megaterium agent 20ml, mix well, obtain nutrient soil;

[0032] Step 3, prepare the nutrient bowl: put the nutrient soil into a seedling raising pot with an outer diameter of 9cm and a height of 9cm to obtain a nutrient bowl;

[0033] Step 4, seed pretreatment: select seashore mallow seeds with plump grains and good seed coat color, soak them in water for two days, take them out, and set aside;

...

Embodiment 2

[0041] A method for bioremediation of heavy metal lead and cadmium contaminated soil based on seaside mallow, comprising the steps of:

[0042] Step 1, preparing mixed soil: crush river sand, humus soil and garden soil respectively, mix them evenly according to the mass ratio of 3:3:4, pass through a sieve with a mesh diameter of 2mm, and obtain mixed soil;

[0043] Step 2, preparing nutrient soil: adding effective viable bacteria to every kilogram of mixed soil is 1.5×10 8 25g of young capsule mycotic agent per g, the effective number of viable bacteria is 3.5×10 8 Individual / mL Pseudomonas agent 20ml, mix well, obtain nutrient soil;

[0044] Step 3, prepare the nutrient bowl: put the nutrient soil into a seedling raising pot with an outer diameter of 9cm and a height of 9cm to obtain a nutrient bowl;

[0045] Step 4, seed pretreatment: select seashore mallow seeds with plump grains and good seed coat color, soak them in water for two days, take them out, and set aside;

...

Embodiment 3

[0053] A method for bioremediation of heavy metal lead and cadmium contaminated soil based on seaside mallow, comprising the steps of:

[0054] Step 1, preparing mixed soil: crush river sand, humus soil and garden soil respectively, mix them evenly according to the mass ratio of 3:3:4, pass through a sieve with a mesh diameter of 2mm, and obtain mixed soil;

[0055] Step 2, preparing nutrient soil: adding effective viable bacteria to every kilogram of mixed soil is 2×10 8 25g of Moses capsule mold agent per g, the effective number of viable bacteria is 4×10 8 Each / mL rhizobia agent 20ml, mix uniformly, obtain nutrient soil;

[0056] Step 3, prepare the nutrient bowl: put the nutrient soil into a seedling raising pot with an outer diameter of 9cm and a height of 9cm to obtain a nutrient bowl;

[0057] Step 4, seed pretreatment: select seashore mallow seeds with plump grains and good seed coat color, soak them in water for two days, take them out, and set aside;

[0058] Step...

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PUM

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Abstract

The invention discloses a bioremediation method for soil polluted by heavy metal lead cadmium and base on kosteletzkya virginica. The bioremediation method comprises the following steps of composite soil preparation, nutrient soil preparation, feeding block preparation, seed pretreatment, sowing, transplantation, fertilization and harvesting. According to the bioremediation method for the soil polluted by the heavy metal lead cadmium and base on the kosteletzkya virginica, the survival rate of the kosteletzkya virginica can be improved, the kosteletzkya virginica grows more robust, and the heavy metal lead cadmium in the soil can be efficiently absorbed; and the absorption rate of the kosteletzkya virginica on the heavy metal lead cadmium is improved by 70% or over compared with the absorption rate of commonly-cultivated kosteletzkya virginica.

Description

technical field [0001] The invention belongs to the technical field of heavy metal pollution restoration, and in particular relates to a bioremediation method for heavy metal lead and cadmium contaminated soil based on seaside mallow. Background technique [0002] Soil is an important resource for the survival and development of human society. However, with the rapid development of industrialization and the acceleration of urbanization, heavy metal pollution in my country's soil is becoming more and more serious. At present, lead and cadmium pollution is the most common type of soil heavy metal pollution, and its contaminated soil remediation is a difficult problem. The incubation period of heavy metal lead and cadmium pollution is long, and the harm is chronic accumulation, which is not easy to be noticed by people, and once the environment is polluted, the residual time is long, and it is not easy to remove from the environment. [0003] Some physical or chemical methods ...

Claims

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Application Information

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IPC IPC(8): B09C1/00B09C1/10
CPCB09C1/10B09C1/105
Inventor 周建王保全齐安国乔丽芳邓中阳
Owner HENAN INST OF SCI & TECH
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