Biochemical remediation method of heavy metal polluted soil

A technology of contaminated soil and remediation method, which is applied in the field of biochemical remediation of heavy metal-contaminated soil, can solve problems such as non-permanent remediation measures, and achieve the effect of large enrichment of heavy metals, obvious effect, and simple extraction

Active Publication Date: 2016-08-24
DALIAN DEETOP ENVIRONMENTAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

but not a permanent fix

Method used

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  • Biochemical remediation method of heavy metal polluted soil

Examples

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Comparison scheme
Effect test

Embodiment 1

[0038] Example 1 The biochemical remediation method of heavy metal-contaminated soil includes three processes: insecticide spraying, earthworm enrichment and remediation, and microbial decomposition.

[0039] In the spraying process of the insecticide, the insecticide is mainly prepared by 280 parts of organic fertilizer, 28 parts of microbial inoculum, 0.05 part of matrine, 0.03 part of deervine, 0.02 part of Junduqing and 0.02 part of Bacillus thuringiensis powder Formed, all in parts by mass (30g / part).

[0040] The preparation technology of described insecticide is:

[0041] A. Put the organic fertilizer on a sterile plastic film, spread it flat, cover it with a sterile plastic film for ultraviolet sterilization for 2-4 days, remove the film, put it in a cool place, and then add microbial agents (Beijing Zhongkehui Agro-EM bacteria) and mix well for later use;

[0042] B. Put matrine and roten in an earthen pot, soak in warm water at 15°C for 30 minutes, use 2-6 times th...

Embodiment 2

[0050] Example 2 The biochemical remediation method of heavy metal-contaminated soil includes three processes: insecticide spraying, earthworm enrichment and remediation, and microbial decomposition.

[0051] In the spraying process of the insecticide, the insecticide is mainly prepared by 320 parts of organic fertilizer, 32 parts of microbial inoculum, 0.1 part of matrine, 0.09 part of deervine, 0.03 part of Junduqing and 0.06 part of Bacillus thuringiensis powder Formed, all in parts by mass (40g / part).

[0052] The preparation technology of described insecticide is:

[0053] A. Put the organic fertilizer on a sterile plastic film, spread it flat, cover it with a sterile plastic film for ultraviolet sterilization for 2-4 days, remove the film, put it in a cool place, and then add microbial agents (Beijing Zhongkehui Agro-EM bacteria) and mix well for later use;

[0054] B. Put matrine and roten in an earthen pot, soak in warm water at 25°C for 45 minutes, use 2-6 times the...

Embodiment 3

[0062] Example 3 The biochemical remediation method of heavy metal-contaminated soil includes three processes of pesticide spraying, earthworm enrichment and remediation, and microbial decomposition.

[0063] In the insecticide spraying process, the insecticide is mainly prepared by 300 parts of organic fertilizer, 30 parts of microbial inoculum, 0.075 part of matrine, 0.06 part of deervine, 0.025 part of Junduqing and 0.04 part of Bacillus thuringiensis powder Formed, all in parts by mass (50g / part).

[0064] The preparation technology of described insecticide is:

[0065] A. Put the organic fertilizer on a sterile plastic film, spread it flat, cover it with a sterile plastic film for ultraviolet sterilization for 2-4 days, remove the film, put it in a cool place, and then add microbial agents (Beijing Zhongkehui Agro-EM bacteria) and mix well for later use;

[0066] B. Put matrine and roten in an earthen pot, soak in warm water at 25°C for 45 minutes, use 2-6 times the wei...

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Abstract

The invention provides a biochemical remediation method of heavy metal contaminated soil. The biochemical remediation method comprises three processes of spraying an insecticide, enriching earthworms for remediation, and performing microbial decomposition. Three processes of spraying the insecticide, enriching the earthworms for the remediation, and performing the microbial decomposition are completed in one complete remediation period which refers to two months, three remediation periods of processes are performed from the third lunar month to the ninth lunar month every year. The biochemical remediation method has the excellent effects that a remediation technology which is capable of reducing the content of heavy metals in soil and is environmentally-friendly, namely a process technology in which bioremediation (animal remediation) is used as a main means and chemical remediation is used as an auxiliary means, is selected; the earthworm remediation becomes one very potential technology in the soil remediation due to the characteristics of large enriching amount of the heavy metals, short growth period, simplicity in extraction, remarkable effect and the like; by combining the biological and chemical compound remediation, the soil remediation is smoothly realized for soil subjected to heavy metal pollution, an extremely remarkable effect is achieved, and no secondary pollution to the soil is caused.

Description

technical field [0001] The invention relates to a soil remediation method, in particular to a biochemical remediation method for heavy metal polluted soil, and belongs to the field of soil remediation methods. Background technique [0002] Since ancient times, soil has always been the source of food and clothing and the basis of survival for the vast number of farmers in our country. Even in modern economic life, soil is still the most basic factor of production and the carrier of various economic relations. However, with the rapid development of the modern economy, the discharge of environmental pollutants is increasing day by day, and the environmental pollution and ecological damage are becoming more and more serious, which has brought serious pollution to the soil on which human beings depend for survival. Due to the difficulty of decomposing, transforming or enriching heavy metals after entering the soil, and the complexity of the structure of the soil system itself, it...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B09C1/00C05G3/02C05G3/04C05G3/60C05G3/80
Inventor 马跃高飞李伟
Owner DALIAN DEETOP ENVIRONMENTAL TECH CO LTD
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