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Polycyclic aromatic hydrocarbons-contaminated soil remediation agent

A soil remediation agent, polycyclic aromatic hydrocarbon technology, applied in the field of soil remediation

Inactive Publication Date: 2016-10-26
战锡林
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] There is little literature on the removal of polycyclic aromatic hydrocarbon pollutants in soil

Method used

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  • Polycyclic aromatic hydrocarbons-contaminated soil remediation agent
  • Polycyclic aromatic hydrocarbons-contaminated soil remediation agent
  • Polycyclic aromatic hydrocarbons-contaminated soil remediation agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0087] Take the soil sample polluted by polycyclic aromatic hydrocarbons, and then take the soil remediation agent according to the ratio of 50 grams of soil remediation agent per 1000 grams of soil sample;

[0088] Add the following raw materials to the soil sample: chitin, zeolite powder, green algae, humic acid, shell powder, enoki mushroom chaff, corn cob, fly ash, tea seed shell, peat ash, betel nut wood chips, palm wood chips ;

[0089] The parts by weight of each raw material are as follows:

[0090]

[0091] Mix with soil samples and keep for 48 hours;

[0092] The bacterium powder that the present invention adopts, enzyme are all derived from commercially available;

[0093] Chlorella is dried and pulverized algal powder with a water content of about 3%;

[0094] Corn cobs are dried and crushed granules with a water content of about 4%;

[0095] Peat ash is also a dried and pulverized powder with a water content of about 3%;

[0096] Betel nut wood chips and p...

Embodiment 2

[0129] Exactly the same as the soil sample in Example 1, adopt the same method as Example 1 to remove polycyclic aromatic hydrocarbons in the soil sample, the difference is that the parts by weight of the soil remediation agent etc. are different;

[0130]

[0131]

[0132] The compound enzyme preparation is composed of polyphenol oxidase, pyruvate kinase and laccase;

[0133] Enzyme activity of polyphenol oxidase 5.4×10 5 U / g; pyruvate kinase 18.3×10 5 U / g; Laccase 8.9×10 5 U / g, the enzyme activity of α-glycerophosphate dehydrogenase is 11.3×10 5 U / g; the weight ratio of polyphenol oxidase, pyruvate kinase, laccase, and α-glycerophosphate dehydrogenase is 2:4:3:1;

[0134] Compound microbial agent 0.005;

[0135] The active ingredients of the above-mentioned composite microbial agent are composed of Bacillus natto powder, Trichoderma harzianum powder, nitroreductor Pseudomonas powder, Saccharomyces cerevisiae powder, white rot fungus powder, and Trichoderma chrysant...

Embodiment 3

[0149] Exactly the same as the soil sample in Example 1, adopt the same method as Example 1 to remove polycyclic aromatic hydrocarbons in the soil sample, the difference is that the parts by weight of the soil remediation agent etc. are different;

[0150]

[0151] The compound enzyme preparation is polyphenol oxidase, pyruvate kinase, laccase;

[0152] Enzyme activity of polyphenol oxidase 5.4×10 5 U / g, the enzyme activity of pyruvate kinase is 18.3×10 5 U / g, the enzyme activity of laccase is 8.9×10 5 U / g; the weight ratio of polyphenol oxidase, pyruvate kinase and laccase is 1:2:1;

[0153] Composite microbial agent 0.048;

[0154] The active ingredients of the composite microbial agent are composed of Bacillus natto powder, Trichoderma harzianum powder, Nitroreductor Pseudomonas powder, Saccharomyces cerevisiae powder, white rot fungus powder, and Trichoderma chrysanthemum powder;

[0155] The weight ratio of Bacillus natto powder, Trichoderma harzianum powder, Pseud...

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Abstract

The invention belongs to the technical field of soil remediation, and in particular relates to a polycyclic aromatic hydrocarbons-contaminated soil remediation agent. The polycyclic aromatic hydrocarbons-contaminated soil remediation agent is prepared from the following components: chitin, zeolite powder, green algae, humic acid, shell powder, mushroom bran of flammulina velutipes, corncob, pulverized fuel ash, tea seed shell, peat ash, areca sawdust, palm sawdust, a complex enzyme preparation and a composite microbial agent. After the soil remediation agent is adopted, the soil is treated by using mild enzymes and microbial strains under the condition that other chemical solvents are not introduced into the soil, so that the secondary pollution is not caused, and the action condition is mild.

Description

technical field [0001] The invention belongs to the technical field of soil remediation, and in particular relates to a polycyclic aromatic hydrocarbon contaminated soil remediation agent. Background technique [0002] Polycyclic aromatic hydrocarbons (PAHs) are a class of typical persistent toxic substances, which mainly come from the incomplete combustion of fossil fuels and biomass. PAHs are persistent, long-distance migration, lipophilic, and "three-caused" toxicity, and they are ubiquitous in environmental media. PAH can also pollute water and soil through wastewater and waste residue, and dust in the atmosphere can also fall to water and soil. Among them, soil is a major sink of PAHs, and the level and composition characteristics of PAHs in soil can reflect the pollution status and main sources of PAHs in the region. In the survey and evaluation of soil pollution in China, the reference value for the evaluation of soil polycyclic aromatic hydrocarbons is 100 μg / kg. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K17/40
CPCC09K17/40
Inventor 战锡林
Owner 战锡林
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