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Heavy metal contaminated soil remediation agent and preparation method and application method thereof

A technology for polluted soil and remediation agent, applied in the field of soil remediation, can solve the problems of economic loss, can not completely eliminate heavy metals in soil, endanger human health and other problems, and achieve the effect of reducing pests and diseases, rapid treatment and recycling, and increasing yield.

Inactive Publication Date: 2019-12-13
赵龙
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Soil heavy metal pollution not only directly causes huge economic losses due to the reduction of grain production, but also ultimately endangers human health through water, air, plants and other media or food chains. What is more serious is that this pollution is long-term, concealed and irreversible. characteristics, therefore, the remediation of soil heavy metal pollution is a difficult problem
[0004] However, the existing repair methods for heavy metal-contaminated soil cannot completely and completely eliminate heavy metals in the soil, or bring new pollutants, and there are various defects

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Heavy metal contaminated soil remediation agent, made from the following raw materials by weight:

[0038] Humic acid 100kg,

[0039] Biochar 50kg,

[0040] 20kg of compound minerals (including 5kg of potassium permanganate, 5kg of ammonium nitrate, 5kg of shell powder, and 5kg of calcium phosphate),

[0041] Compound enzyme preparation 1kg (including 0.25kg biological enzyme, 0.5kg pesticide degrading enzyme, 0.25kg plant decomposing enzyme),

[0042] Compound microbial agent 1kg (including 0.25kg of enzyme bacteria, 0.25kg of nitrogen-fixing bacteria, 0.5kg of probiotics, and the effective number of viable bacteria is 1×10 8 cfu / g).

[0043] Preparation:

[0044] (1) take each raw material by the parts by weight of above-mentioned heavy metal contaminated soil remediation agent;

[0045] (2) Mix humic acid, biochar and composite minerals, crush them, pass through an 80-mesh sieve, add equal weight of water, heat up to 50°C, stir at a speed of 200r / min for 2 hours...

Embodiment 2

[0049] Heavy metal contaminated soil remediation agent, made from the following raw materials by weight:

[0050] Humic acid 200kg,

[0051] Biochar 100kg,

[0052] 30kg of compound minerals (including 9kg of potassium permanganate, 9kg of ammonium nitrate, 6kg of shell powder, and 6kg of calcium phosphate),

[0053] Compound enzyme preparation 5kg (including biological enzyme 0.5kg, pesticide degrading enzyme 2.5kg, plant decomposing enzyme 2.0kg),

[0054] Composite microbial agent 5kg (including 1.0kg of enzyme bacteria, 2.0kg of nitrogen-fixing bacteria, 2.0kg of probiotics, and the number of effective viable bacteria is 1×10 11 cfu / g).

[0055] Preparation:

[0056] (1) take each raw material by the parts by weight of above-mentioned heavy metal contaminated soil remediation agent;

[0057] (2) Mix humic acid, biochar and composite minerals and pulverize them, pass through a 100-mesh sieve, add equal weight of water, heat up to 60°C, stir at a speed of 500r / min for 1 h...

Embodiment 3

[0061] Heavy metal contaminated soil remediation agent, made from the following raw materials by weight:

[0062] Humic acid 150kg,

[0063] Biochar 80kg,

[0064] 25kg of compound minerals (including 7.5kg of potassium permanganate, 7.5kg of ammonium nitrate, 5kg of shell powder, and 5kg of calcium phosphate),

[0065] Compound enzyme preparation 2kg (including biological enzyme 0.5kg, pesticide degrading enzyme 1.0kg, plant decomposing enzyme 0.5kg),

[0066] Compound microbial agent 2kg (including 0.5kg of enzyme bacteria, 0.5kg of nitrogen-fixing bacteria, 1.0kg of probiotics, and the effective number of viable bacteria is 1×10 10 cfu / g).

[0067] Preparation:

[0068] (1) take each raw material by the parts by weight of above-mentioned heavy metal contaminated soil remediation agent;

[0069] (2) Mix humic acid, biochar and composite minerals and pulverize them, pass through a 100-mesh sieve, add equal weight of water, heat up to 55°C, stir at a speed of 300r / min for...

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Abstract

The invention discloses a heavy metal contaminated soil remediation agent. The remediation agent is prepared from the following raw materials in parts by weight: 100-200 parts of humic acid, 50-100 parts of biochar, 20-30 parts of composite minerals, 1-5 parts of a compound enzyme preparation and 1-5 parts of a compound microbial agent. The preparation method comprises the following steps:(1)weighing the raw materials;(2)mixing the humic acid, the biochar and the composite minerals, crushing, sieving, adding water, heating, stirring, and cooling to obtain a mixture A for later use;(3)mixing the compound enzyme preparation and the compound microbial agent, adding water and a carbon source, and performing habituated culture to obtain a mixture B; and(4)uniformly mixing the mixture A and themixture B, and drying to obtain the product. According to the remediation agent, mild enzymes and microbial strains are adopted for treating soil, heavy metal and pesticide residues are degraded and adsorbed, and the soil quality condition of the soil is obviously improved.

Description

technical field [0001] The invention relates to the technical field of soil remediation, and more specifically relates to a heavy metal-contaminated soil remediation agent and a preparation method and an application method thereof. Background technique [0002] At present, the problem of soil heavy metal pollution is becoming more and more serious. Its main sources are industrial pollution sources, agricultural pollution sources and transportation. Due to the intensification of industrial production and mining development and the increasing material needs of human beings, heavy metal pollution is increasing year by year. . [0003] Soil heavy metal pollution not only directly causes huge economic losses due to the reduction of grain production, but also ultimately endangers human health through water, air, plants and other media or food chains. What is more serious is that this pollution is long-term, concealed and irreversible. Therefore, the remediation of soil heavy meta...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K17/40B09C1/10B09C1/08C09K101/00
CPCB09C1/08B09C1/10B09C1/105C09K17/40C09K2101/00
Inventor 赵龙赵永明王民生王锐王伟刘江南魏军华丁春芳王小军邵军李伟成
Owner 赵龙
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