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Method for remediating heavy metal polluted soil by comprehensively utilizing biochemical resources

A technology that pollutes soil and heavy metals, applied in the field of soil remediation, can solve the problems of high remediation cost and complicated operation

Active Publication Date: 2015-01-07
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] Although there are many methods of mainstream soil remediation technology, they all have defects, such as complicated operation and high repair cost. Therefore, it is still necessary to research and invent a simpler and more effective soil remediation method.

Method used

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  • Method for remediating heavy metal polluted soil by comprehensively utilizing biochemical resources

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Example 1 The method of comprehensively utilizing biochemical resources to remediate heavy metal-contaminated soil includes three processes: pesticide spraying, earthworm enrichment and remediation, and microbial decomposition. The insecticide is prepared from the following materials, all in parts by mass: 280kg of organic fertilizer, 28kg of microbial agent, 0.05kg of pyrethrum, 0.03kg of deervine and 0.02kg of Bacillus thuringiensis powder.

[0030] The preparation technology of described insecticide is:

[0031] ① Put the organic fertilizer on a sterile plastic film, spread it flat, cover it with a sterile plastic film for ultraviolet sterilization for 1 day, remove the film, put it in a cool place, add microbial agents and mix well for later use;

[0032] ②Put pyrethrum and deer vine in a non-iron container, soak in warm water at a temperature of 10-20°C for 30 minutes. Boil for 30 minutes, let stand for 5 hours, and take the supernatant for later use;

[0033] ③...

Embodiment 2

[0039] Example 2 The method of comprehensively utilizing biochemical resources to remediate heavy metal-contaminated soil includes three processes: pesticide spraying, earthworm enrichment and remediation, and microbial decomposition. The insecticide is prepared from the following materials, all in parts by mass: 320kg of organic fertilizer, 32kg of microbial agent, 0.1kg of pyrethrum, 0.09kg of deervine and 0.06kg of Bacillus thuringiensis powder.

[0040] The preparation technology of described insecticide is:

[0041] ① Put the organic fertilizer on a sterile plastic film, spread it flat, cover it with a sterile plastic film and sterilize it with ultraviolet light for 5 days, remove the film, put it in a cool place, add microbial agents and mix well for later use;

[0042] ②Put pyrethrum and deer vine in a non-iron container, soak in warm water at a temperature of 10-20°C for 30 minutes, the water consumption is 5 times the weight of the raw materials, put it on a smokele...

Embodiment 3

[0050] Example 3 The method of comprehensively utilizing biochemical resources to remediate heavy metal-contaminated soil includes three processes: pesticide spraying, earthworm enrichment and remediation, and microbial decomposition. The insecticide is prepared from the following materials, all in parts by mass: 290kg of organic fertilizer, 29kg of microbial agent, 0.06kg of pyrethrum, 0.05kg of deervine and 0.03kg of Bacillus thuringiensis powder.

[0051] The preparation technology of described insecticide is:

[0052] ① Put the organic fertilizer on a sterile plastic film, spread it flat, cover it with a sterile plastic film and sterilize it with ultraviolet light for 2 days, remove the film, put it in a cool place, add microbial agents and mix well for later use;

[0053] ②Put pyrethrum and deer vine in a non-iron container, soak in warm water at a temperature of 10-20°C for 30 minutes, the water consumption is 3.5 times the weight of the raw materials, put it on a smok...

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Abstract

The invention discloses a method for remediating heavy metal polluted soil by comprehensively utilizing biochemical resources. The method comprises the following three steps: spraying a pesticide, enriching earthworms for remediation and performing microbial decomposition, wherein the pesticide in the pesticide spraying process is prepared from the following materials in parts by mass: 280-320 parts of organic fertilizer, 28-32 parts of a microbial agent, 0.05-0.1 part of pyrethrum, 0.03-0.09 part of derris and 0.02-0.06 part of bacillus thuringiensis powder. According to the method, the soil fertility can be improved, pests in the soil and on the surface can be killed, the microbial decomposition process is added, the effect is remarkable, and the operation is easy.

Description

technical field [0001] The invention discloses a soil remediation method, in particular to a method for comprehensively utilizing biochemical resources to repair heavy metal-contaminated soil, and belongs to the field of soil remediation methods. Background technique [0002] Soil heavy metal pollution refers to the phenomenon that due to the addition of metals to the soil due to human activities, the heavy metals in the soil are significantly higher than the original content, and the quality of the ecological environment is deteriorated. Heavy metals in polluted soil mainly include mercury (Hg), cadmium (Cd), lead (Pb), chromium (Cr) and metalloid arsenic (As) and other elements with significant biological toxicity, as well as zinc (Zn) and copper with certain toxicity. (Cu), nickel (Ni) and other elements. Mainly come from pesticides, wastewater, sludge and atmospheric deposition, etc. For example, mercury mainly comes from mercury-containing wastewater, cadmium and lead ...

Claims

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Application Information

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IPC IPC(8): B09C1/00C05G3/02C05G3/60
CPCB09C1/00B09C1/08B09C1/10B09C1/105B09C2101/00C05G3/60
Inventor 苗庆龄
Owner 无锡市太湖湖泊治理股份有限公司
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