Animal-plant comprehensive utilization and restoration method of heavy-metal polluted soil

A remediation method and technology for polluted soil, applied in the field of soil remediation, comprehensive utilization of animals and plants for heavy metal-contaminated soil, to achieve the effects of strong resistance to stress, strong germination, and fast growth.

Active Publication Date: 2015-01-28
无锡市太湖湖泊治理股份有限公司
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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-contam

Method used

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  • Animal-plant comprehensive utilization and restoration method of heavy-metal polluted soil

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Effect test

Embodiment 1

[0030] Example 1 The comprehensive utilization and restoration method of animals and plants for 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 ...

Embodiment 2

[0036] Example 2 The comprehensive utilization and restoration method of animals and plants for 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 ...

Embodiment 3

[0042] Example 3 The comprehensive utilization and restoration method of animals and plants for 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 mo...

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Abstract

The invention discloses an animal-plant comprehensive utilization and restoration method of heavy-metal polluted soil. According to the technical scheme, the method comprises the steps: (1) selecting the to-be-restored heavy-metal polluted soil, manually removing weeds and shrub, applying a rotten organic fertilizer at the end of autumn and the beginning of the winter, deeply cultivating the soil, weathering the soil, freezing the overwinter injurious insects and tilling and crushing the soil; (2) when the average temperature reaches over 10 DEG C after the soil is thawed in spring, transplanting fast-growing mulberry trees having an effect for gathering the heavy metals; (3) introducing the earthworm restoration process when the temperature reaches more than 15 DEG C after the transplanting is completed, and collecting the earthworms; and (4) primarily collecting the earthworms in the earthworm restoration process, introducing grassy ramie which can accumulate Cu<2+> and grows fast, so that the effect for gathering the copper ions in the shallow soil can be enhanced, and then the ramie with roots is integrally eliminated; and re-introducing the earthworms and ramie in the restored land in the next spring.

Description

Technical field [0001] The invention involves a method of soil repair, especially the comprehensive repair method of animal and plant with heavy metal pollution 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 the heavy metal content in the soil is significantly higher than the background content due to human activity brought heavy metals into the soil, and may cause existing or potential soil quality degradation, ecological and environmental deterioration.Heavy metal damage to the human body, cadmium (CD), mercury (HG), silver (AG), copper (CU), 钡 (ba), lead (PB), etc.The ions of heavy metal elements are generally toxic. Once heavy metal elements are overlurred in the human body, it is extremely harmful to the body.Source of heavy metal pollution: 1) Heavy metal pollution caused by industrial three wastes: Mining and smelting technology in metal mineral devel...

Claims

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Application Information

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IPC IPC(8): B09C1/00B09C1/10
CPCB09C1/10B09C1/105
Inventor 赵连祺
Owner 无锡市太湖湖泊治理股份有限公司
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