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Remediation method for treating severe heavy metal contaminated soil by utilizing animals

A remediation method and a technology for polluted soil, applied in the field of soil remediation, can solve problems such as soil environmental pollution, secondary pollution, and poor applicability of heavy metal-contaminated soil remediation, and achieve the effect of improving fertilizer efficiency and increasing fertility

Active Publication Date: 2015-01-21
DALIAN DEETOP ENVIRONMENTAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Physical and chemical methods have poor applicability for remediation of heavy metal-contaminated soil, high treatment costs, and easy to cause secondary pollution. They cannot fundamentally solve the problem of large-scale soil environmental pollution.

Method used

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  • Remediation method for treating severe heavy metal contaminated soil by utilizing animals

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Example 1: The remediation method of using animals to treat heavy metal-contaminated soil includes three processes: pesticide spraying, earthworm enrichment and remediation, and microbial decomposition.

[0034] In the insecticide spraying process, the insecticide is mainly prepared from 280 parts of organic fertilizer, 28 parts of microbial agent, 0.03 part of matrine and 0.02 part of Bacillus thuringiensis powder, all in parts by mass (35g / part ).

[0035] The preparation technology of described insecticide is:

[0036] A. Put the organic fertilizer on a sterile plastic film, spread it flat, cover it with a sterile plastic film for ultraviolet sterilization for 1-5 days, remove the film, put it in a cool place, and then add microbial agents (Huiminda bacteria) fertilizer), mix well and set aside;

[0037] B. Put matrine in a non-iron container, soak it in warm water at 10°C for 40 minutes, use 1-5 times the weight of the raw material, put it on a smokeless stove, a...

Embodiment 2

[0045] Example 2: The remediation method of using animals to treat heavy metal-contaminated soil includes three processes: pesticide spraying, earthworm enrichment and remediation, and microbial decomposition.

[0046] In the insecticide spraying process, the insecticide is mainly prepared from 320 parts of organic fertilizer, 32 parts of microbial agent, 0.09 part of matrine and 0.06 part of Bacillus thuringiensis powder, all in parts by mass (45g / part ).

[0047] The preparation technology of described insecticide is:

[0048] A. Put the organic fertilizer on a sterile plastic film, spread it flat, cover it with a sterile plastic film for ultraviolet sterilization for 1-5 days, remove the film, put it in a cool place, and then add microbial agents (Huiminda bacteria) fertilizer), mix well and set aside;

[0049] B. Put matrine in a non-iron container, soak it in warm water at 20°C for 20 minutes, use 1-5 times the weight of the raw material, put it on a smokeless stove, ...

Embodiment 3

[0057] Example 3: The remediation method of using animals to treat heavy metal-contaminated soil includes three processes: pesticide spraying, earthworm enrichment and remediation, and microbial decomposition.

[0058] In the insecticide spraying process, the insecticide is mainly prepared from 300 parts of organic fertilizer, 30 parts of microbial agent, 0.06 part of matrine and 0.04 part of Bacillus thuringiensis powder, all in parts by mass (55g / part ).

[0059] The preparation technology of described insecticide is:

[0060] A. Put the organic fertilizer on a sterile plastic film, spread it flat, cover it with a sterile plastic film for ultraviolet sterilization for 1-5 days, remove the film, put it in a cool place, and then add microbial agents (Huiminda bacteria) fertilizer), mix well and set aside;

[0061] B. Put matrine in a non-iron container, soak it in warm water at 20°C for 20 minutes, use 1-5 times the weight of the raw material, put it on a smokeless stove, ...

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Abstract

The invention provides a remediation method for treating severe heavy metal contaminated soil by utilizing animals. The method mainly comprises the following three processes: spraying insecticides, performing earthworm enrichment and remediation and performing microbial decomposition. Due to the three processes of spraying insecticides, performing earthworm enrichment and remediation and performing microbial decomposition, a complete remediation cycle is finished. A remediation cycle lasts for two months, and three remediation cycles are totally performed and are started from lunar calendar March and ended in September per year. The method disclosed by the invention has the innovations that heavy metals are removed by utilizing the animals, the risk of secondary pollution is avoided, the earthworms belong to animals with fast growth, and the whole treatment and remediation cycle is relatively short; by utilizing special insecticides, the agent is prepared by combining organic fertilizers with vegetable drugs and chemical medicines with insecticidal effects, so that the fertilizer efficiency of soil can be improved, and injurious insects in the soil and on the surface of the soil can be killed; and moreover, the process of microbial decomposition is increased, so that microbes can be effectively decomposed, and decomposition is performed by utilizing the animals such as dung beetles.

Description

technical field [0001] The invention relates to a soil remediation method, in particular to a method for remediating soil heavily polluted by heavy metals by using animals, and belongs to the field of soil remediation methods. Background technique [0002] Soil heavy metal pollution refers to the phenomenon that human activities add heavy metals to the soil, causing the heavy metals in the soil to be significantly higher than the original content, and causing the deterioration of the ecological environment. Soil is one of the main natural resources that human beings rely on for survival, and it is also a traditional Chinese medicine component of the human ecological environment. In the process of industrialization, urban pollution has intensified, and the types and quantities of agricultural chemicals have increased. The degree of soil heavy metal pollution is increasing, and the polluted area is expanding year by year. Toxic heavy metals have the characteristics of conceal...

Claims

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Application Information

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IPC IPC(8): B09C1/00C05G3/02C05G3/60
CPCB09C1/00B09C1/10B09C1/105B09C2101/00C05G3/60
Inventor 苗庆龄
Owner DALIAN DEETOP ENVIRONMENTAL TECH CO LTD
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