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Method for repairing heavy metal contaminated soil by combining plants and fungi

A technology of combined restoration of polluted soil, applied in the field of biological treatment of soil pollution

Inactive Publication Date: 2020-08-04
ZHEJIANG BIOASIA PHARMA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The methods disclosed in the prior art are only aimed at the enrichment of heavy metals in the deep soil layer, and lack a method for the joint enrichment of heavy metals in the deep soil layer and the surface layer

Method used

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  • Method for repairing heavy metal contaminated soil by combining plants and fungi
  • Method for repairing heavy metal contaminated soil by combining plants and fungi
  • Method for repairing heavy metal contaminated soil by combining plants and fungi

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] The remediation of embodiment 1 to cadmium polluted soil

[0019] Soil remediation method in the test area: use 0.1% mercuric chloride to sterilize Solanum nigrum seeds, then wash them thoroughly with tap water and then rinse with distilled water. Moisturize and germinate at 25-30°C, and then move the germinated seeds to a seedling tray and keep them in humus for 20-25 days. After conservation, transplant the Solanum solanum seedlings with soil in the seedling tray to the cadmium-contaminated soil, keep the seedlings at a distance of 25-30 cm, and spray water regularly to keep the soil moist.

[0020] Straws are bundled into bundles or mats, soaked in water to fully absorb and swell, moved to a greenhouse to keep at 50°C to 70°C, and kept moist for 5 to 7 days to decompose. After the weather warms up in spring, inoculate the spores of Trichoderma dark green, Trichoderma viride, and Mucor circini which have super-accumulated cadmium ability screened by this laboratory t...

Embodiment 2

[0026] Embodiment 2 to the remediation of mercury-contaminated soil

[0027] Soil remediation method in the test area: germinate wild mugwort seeds at 25-30°C, and then move the germinated seeds to seedling trays for 20-25 days with humus soil. After 20-25 days of incubation, transplant the wild mugwort with soil and seedlings in the seedling tray to mercury-contaminated soil, keep the seedlings at a distance of 25-30 cm, and spray water regularly to keep the soil moist.

[0028] Straws are bundled into bundles or mats, soaked in water to fully absorb and swell, moved to a greenhouse to keep at 50°C to 70°C, and kept moist for 5 to 7 days to decompose. After the weather gets warmer in the season, mix and inoculate the spores of Trichoderma oxysporum and Fusarium oxysporum, which have super-accumulated cadmium ability, obtained by our laboratory on the decomposed straw, mix evenly, and keep 25-32 hours in the fermentation tank or fermentation bed. ℃, ventilated, cultivated for...

Embodiment 3

[0034] Embodiment 3 to the remediation of arsenic-contaminated soil

[0035] Soil remediation method in the test area: transplant the centipede grass seedlings in the nursery field to the arsenic-contaminated soil, keep the seedlings at a distance of 25-30 cm, and spray water regularly to keep the soil moist.

[0036] Straws are bundled into bundles or mats, soaked in water to fully absorb and swell, moved to a greenhouse to keep at 50°C-70°C, and kept moist for 5-7 days to decompose. After the weather gets warmer in the season, inoculate the spores of P. lilacium and Gliocladium pink that have been screened and obtained by our laboratory on the decomposed wheat stalks, mix well, and keep in the fermentation tank or fermentation bed. 25-32°C, ventilated, cultivated for 4-6 days, until the mycelium is covered with straw bundles. Move the immobilized cultured fungus to the gap between the centipede grass seedlings on the surface of the arsenic-contaminated soil, cover with a sm...

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Abstract

The invention provides a method for repairing heavy metal contaminated soil by combining plants and fungi, which comprises the following steps: a, immobilized culture of fungi: inoculating fungi ontodecomposed straws, and carrying out fermentation culture until the straws are overgrown with mycelia; b, fungus transplanting: transplanting the straws overgrown with the mycelia in the step a to thesurface layer of the soil, and covering the straws with a small amount of soil to enable the straws to be semi-buried in the soil; and c, planting of plants: planting plants with an enrichment effecton the heavy metals in the soil.

Description

technical field [0001] The invention provides a method for jointly repairing heavy metal-contaminated soil by utilizing plants and fungi, and belongs to the technical field of soil pollution biological treatment. Background technique [0002] The 2014 Soil Survey Bulletin shows that the total excess rate of heavy metals in the national soil is 16.1%. The situation of heavy metal pollution is not optimistic, and the control of soil pollution is urgent. Soil heavy metal pollution is extremely shady. In addition to hindering plant growth, it is easy to accumulate in the human body and seriously endanger human health. [0003] Soil heavy metal pollution is very harmful and difficult to control. There have been many remediation technologies around heavy metal pollution in soil. The traditional physical and chemical remediation technology for heavy metals has the advantages of short time and quick results for the treatment of severely polluted soil, but it is often accompanied ...

Claims

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Application Information

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IPC IPC(8): B09C1/10
CPCB09C1/105B09C2101/00
Inventor 谭悠久孙长胜葛迪朱冰舟
Owner ZHEJIANG BIOASIA PHARMA CO LTD
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