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Flora and fauna comprehensive utilization restoring method of heavy metal contaminated soil

A technology of polluted soil and remediation method, applied in the field of soil pollution control in environmental protection, to achieve obvious effects, strong resistance to stress, and fast growth

Pending Publication Date: 2016-06-08
周杰
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of the current situation that the existing restoration of heavy metal-contaminated soil is slightly insufficient, one of the purposes of the present invention is to provide a method for the comprehensive utilization of animals and plants of heavy metal-contaminated soil, which can promote the restoration of heavy metal-contaminated soil microorganisms, improve the physical and chemical characteristics of soil, and Remediation of heavy metal soil pollution has a significant effect, is easy to operate, and has good economic value

Method used

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  • Flora and fauna comprehensive utilization restoring method of heavy metal contaminated soil
  • Flora and fauna comprehensive utilization restoring method of heavy metal contaminated soil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Embodiment 1 The animal and plant comprehensive utilization restoration method of heavy metal polluted soil, the implementation steps are as follows:

[0031] (1) Select the heavy metal-contaminated soil to be repaired, remove weeds and shrubs manually, apply 510 kg of decomposed organic agricultural miscellaneous fertilizer per mu in late autumn and early winter, and plow 40cm deep to weather the soil, freeze the overwintering pests, and plow the land thoroughly rake;

[0032] (2) When the average temperature reaches above 10°C after the soil thaws in spring, transplant woody fast-growing arbor mulberry trees with the ability to enrich heavy metals, and transplant annual mulberry seedlings in interlaced hole planting, with a row spacing of 2.2 meters and a plant spacing of 1.1 meters. Hole colonization, the hole diameter is 0.55 meters, and the hole depth is 0.45 meters;

[0033] (3) After transplanting, irrigate with water once to make the root system of the seedling...

Embodiment 2

[0036] Embodiment 2 The animal and plant comprehensive utilization restoration method of heavy metal polluted soil, the implementation steps are as follows:

[0037] (1) Select the heavy metal-contaminated soil to be repaired, remove weeds and shrubs manually, apply 700 kg of decomposed organic agricultural miscellaneous fertilizer per mu in late autumn and early winter, and plow 50cm deep to weather the soil, freeze the overwintering pests, and plow the land thoroughly rake;

[0038] (2) When the average temperature reaches above 10°C after the soil is thawed in spring, transplant woody fast-growing arbor mulberry trees with the ability to enrich heavy metals, and transplant annual mulberry seedlings in interlaced hole planting, with a row spacing of 3.2 meters and a plant spacing of 1.4 meters. Hole colonization, the hole diameter is 0.65 meters, and the hole depth is 0.6 meters;

[0039] (3) After transplanting, irrigate with water once to make the root system of the seedl...

Embodiment 3

[0042] Embodiment 3 The animal and plant comprehensive utilization restoration method of heavy metal polluted soil, the implementation steps are as follows:

[0043] (1) Select the heavy metal-contaminated soil to be repaired, remove weeds and shrubs manually, apply 620 kg of decomposed organic agricultural miscellaneous fertilizer per mu in late autumn and early winter, and plow 45cm deep to weather the soil, freeze the overwintering pests, and plow the land thoroughly rake;

[0044] (2) When the average temperature reaches above 10°C after soil thawing in spring, transplant woody fast-growing arbor mulberry trees capable of enriching heavy metals, and transplant annual mulberry seedlings in interlaced hole planting with a row spacing of 3 meters and a plant spacing of 1.3 meters. Hole colonization, the hole diameter is 0.6 meters, and the hole depth is 0.55 meters;

[0045](3) After transplanting, irrigate with water once to make the root system of the seedlings more tightl...

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Abstract

The invention discloses a flora and fauna comprehensive utilization restoring method of heavy metal contaminated soil. The method is realized through the following technical schemes with the following steps: (1) selecting to-be-restored heavy metal contaminated soil, artificially eliminating weeds and shrub, sufficiently applying decomposed organic agricultural miscellaneous fertilizer at late autumn and early winter, deeply ploughing, weathering the soil to freeze overwintering injurious insects to death, thoroughly ploughing and harrowing; (2) transplanting woody fast-growing arbor mulberry with capacity of enriching heavy metal when the average temperature achieves 10 DEG C or more after the soil is unfrozen in spring; (3) after the transplanting, introducing earthworms restoring process when the temperature achieves 15 DEG C or more, and then collecting the earthworms; (4) introducing herbage ramie with super-accumulation effect for Cu<2+> and fast growth speed after the first earthworm collection in the earthworm restoring process, enhancing the enrichment effect to the shallow soil copper ion, and then entirely removing the ramie plant with the root; and re-introducing the earthworms and the ramie in the restored soil in spring of the next year.

Description

technical field [0001] The invention relates to a method for soil repair, in particular to a method for comprehensive utilization of animals and plants to restore heavy metal-contaminated soil. It belongs to the field of soil pollution control in environmental protection. Background technique [0002] Soil heavy metal pollution refers to the phenomenon that human activities bring heavy metals into the soil, causing the content of heavy metals in the soil to be significantly higher than the background content, and may cause existing or potential soil quality degradation, ecological and environmental deterioration. Heavy metals are extremely harmful to the human body, such as cadmium (Cd), mercury (Hg), silver (Ag), copper (Cu), barium (Ba), lead (Pb), etc. The ions of heavy metal elements are generally poisonous. Once heavy metal elements are in excess in the human body, they will be extremely harmful to the body. Sources of heavy metal pollution: 1) Heavy metal pollution c...

Claims

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Application Information

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IPC IPC(8): B09C1/00B09C1/10
CPCB09C1/00B09C1/105B09C2101/00
Inventor 不公告发明人
Owner 周杰
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