CN109226248A - A kind of restorative procedure of heavy-metal contaminated soil - Google Patents
A kind of restorative procedure of heavy-metal contaminated soil Download PDFInfo
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- CN109226248A CN109226248A CN201810960535.1A CN201810960535A CN109226248A CN 109226248 A CN109226248 A CN 109226248A CN 201810960535 A CN201810960535 A CN 201810960535A CN 109226248 A CN109226248 A CN 109226248A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C1/00—Reclamation of contaminated soil
- B09C1/10—Reclamation of contaminated soil microbiologically, biologically or by using enzymes
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- Environmental & Geological Engineering (AREA)
- Processing Of Solid Wastes (AREA)
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Abstract
A kind of restorative procedure of heavy-metal contaminated soil of the present invention, the following steps are included: the soil of a, acquisition heavy metal pollution, by soil indoors air-dry and remove plant and animal residues therein, then soil is crushed it is levigate, cross 5mm nylon mesh after soil is adequately uniformly mixed；B, the soil surface being uniformly sprinkling upon soil-repairing agent in step a, with a thickness of 2~4 centimetres；C, soil-repairing agent and soil, are then uniformly mixed, are repaired by the uniform spray water into the soil of step b.Soil is repaired using this method, remediation efficiency is high, and repairing efficiency is short, and repairing effect is good, the tradable lead ion in soil can be effectively reduced, while can also change the gas porosity and chemical property of soil.
Description
Technical field
The invention belongs to soil remediation fields, and in particular to a kind of restorative procedure of heavy-metal contaminated soil.
Background technique
With the development of industrialization, a large amount of uses of the unreasonable exploitation of mineral resources and pesticide, many soil are all dirty
It contaminates, the lead contamination in soil is especially serious.Lead contamination not only produces the degradation of organic matter, soil ammonification and nitrification in soil
Raw negative influence, lead contamination can also be converted into the bigger metal organic compound of pollution, and the health and soil to human body generate
Bigger harm.
Summary of the invention
The purpose of the present invention is overcoming the shortcomings of prior art, a kind of restorative procedure of heavy-metal contaminated soil is provided.
A kind of restorative procedure of heavy-metal contaminated soil of the present invention, comprising the following steps:
A, soil is air-dried indoors and removes plant and animal residues therein, then by soil by the soil for acquiring heavy metal pollution
Crush it is levigate, cross 5mm nylon mesh after soil is adequately uniformly mixed；
B, the soil surface being uniformly sprinkling upon soil-repairing agent in step a, with a thickness of 2~4 centimetres；
C, soil-repairing agent and soil, are then uniformly mixed, are repaired by the uniform spray water into the soil of step b.
Further, the soil-repairing agent is to be prepared from the following raw materials in parts by weight: 5~10 parts of composite bacteria agent, coconut palm
2~4 parts of oil base glucoside, 1~3 part of myristoyl glutamate sodium, 110~130 parts of horsehit, 30~50 parts of medical stone.
Further, the composite bacteria agent is Verticillium lecanii, pseudomonas aeruginosa and mostly glutinous series bacillus three
The weight ratio of the mixture of person, the Verticillium lecanii, pseudomonas aeruginosa and more glutinous series bacillus is 1.3:1.1:
1.0。
Preferably, the soil-repairing agent is to be prepared from the following raw materials in parts by weight: 7.4 parts of composite bacteria agent, cocounut oil
3.4 parts of base glucoside, 2.2 parts of myristoyl glutamate sodium, 120 parts of horsehit, 47 parts of medical stone, the composite bacteria agent are lecanium wheel
The mixture of cladosporium, pseudomonas aeruginosa and more glutinous series bacillus threes, the Verticillium lecanii, P. aeruginosa
The weight ratio of bacillus and more glutinous series bacillus is 1.3:1.1:1.0.
Further, the dosage of the soil-repairing agent is the 8%~10% of soil quality.
Further, the dosage of the step c water is the 50%~70% of soil quality.
Further, the time of reparation is 20~40 days.
The beneficial effects of the present invention are: being repaired using this method to soil, remediation efficiency is high, and repairing efficiency is short, repairs
Multiple effect is good, and the tradable lead ion in soil can be effectively reduced, while can also change the gas porosity and chemically of soil
Matter.
Specific embodiment
The embodiments given below are intended to further illustrate the invention, but is not to be construed as to the scope of the present invention
Limitation, content still falls within this to some nonessential modifications and adaptations of the invention to those skilled in the art according to the present invention
The protection scope of invention.
The interaction of soil-repairing agent each component agent each component used in the present invention, it is false single by Verticillium lecanii, verdigris
The composite bacteria agent of born of the same parents bacillus and more glutinous series bacillus three compositions can be absorbed and be passivated to lead.Cocoyl glucoside and meat
Myristoyl sodium glutamate is used as surfactant, and cocoyl glucoside and myristoyl glutamate sodium are mixed to form compound ligand
System promotes composite bacteria agent to form bacterium excrement micro mist with horsehit, and dispersion, which is attached on medical stone, forms mixed micelles, so as to effective
Absorption and passivation of the promotion composite bacteria agent to lead.Medical stone is used as adsorbent, and the main component of medical stone is titanium dioxide
Silicon, aluminium oxide, more hole and biggish specific surface area make medical stone have stronger adsorption capacity to lead, contain in horsehit
There is the organic matter that can much adsorb heavy metal.
The step of preparation method of soil-repairing agent of the invention, is as follows: drying after a) horsehit ferments, after drying
It is crushed, milled processed, controlling its partial size is 2~5mm；B) microbial bacteria is added in the horsehit of step a after mixing
Obtain mixture A；C) cocoyl glucoside and myristoyl glutamate sodium are configured to concentration with water is the water-soluble of 5.0g/L
Liquid；D) medical stone being pulverized and controlling partial size is 100 mesh, and the cocoyl glucoside aqueous solution prepared in step c is then added
With myristoyl glutamate sodium water solution, it is uniformly mixed to obtain mixture B；E) powder will be carried out after the mixture B drying in step d
Broken, milled processed is then added in the mixture A in step b, is uniformly mixed.
Embodiment 1
The component of soil-repairing agent 1: 5.5 parts of composite bacteria agent, 2.4 parts of cocoyl glucoside, 1.3 parts of myristoyl glutamate sodium,
118 parts of horsehit, 34 parts of medical stone, the composite bacteria agent are Verticillium lecanii, pseudomonas aeruginosa and mostly glutinous class gemma bar
The weight ratio of the mixture of bacterium three, the Verticillium lecanii, pseudomonas aeruginosa and more glutinous series bacillus is 1.3:
1.1:1.0。
Corresponding soil-repairing agent 1 is prepared according to component proportion according to the preparation method of above-mentioned soil-repairing agent.
Embodiment 2
The component of soil-repairing agent 2: 6.2 parts of composite bacteria agent, 2.1 parts of cocoyl glucoside, 1.4 parts of myristoyl glutamate sodium,
114 parts of horsehit, 41 parts of medical stone, the composite bacteria agent are Verticillium lecanii, pseudomonas aeruginosa and mostly glutinous class gemma bar
The weight ratio of the mixture of bacterium three, the Verticillium lecanii, pseudomonas aeruginosa and more glutinous series bacillus is 1.3:
1.1:1.0。
Corresponding soil-repairing agent 2 is prepared according to component proportion according to the preparation method of above-mentioned soil-repairing agent.
Embodiment 3
The component of soil-repairing agent 3: 7.4 parts of composite bacteria agent, 3.4 parts of cocoyl glucoside, 2.2 parts of myristoyl glutamate sodium,
120 parts of horsehit, 47 parts of medical stone, the composite bacteria agent are Verticillium lecanii, pseudomonas aeruginosa and mostly glutinous class gemma bar
The weight ratio of the mixture of bacterium three, the Verticillium lecanii, pseudomonas aeruginosa and more glutinous series bacillus is 1.3:
1.1:1.0。
Corresponding soil-repairing agent 3 is prepared according to component proportion according to the preparation method of above-mentioned soil-repairing agent.
Embodiment 4
The component of soil-repairing agent 4: 9.3 parts of composite bacteria agent, 2.8 parts of cocoyl glucoside, 2.7 parts of myristoyl glutamate sodium,
123 parts of horsehit, 50 parts of medical stone, the composite bacteria agent are Verticillium lecanii, pseudomonas aeruginosa and mostly glutinous class gemma bar
The weight ratio of the mixture of bacterium three, the Verticillium lecanii, pseudomonas aeruginosa and more glutinous series bacillus is 1.3:
1.1:1.0。
Corresponding soil-repairing agent 4 is prepared according to component proportion according to the preparation method of above-mentioned soil-repairing agent.
Comparative example 1
The component of soil-repairing agent 5: 5.5 parts of Verticillium lecanii, 2.4 parts of cocoyl glucoside, myristoyl glutamate sodium 1.3
Part, 118 parts of horsehit, 34 parts of medical stone.
Corresponding soil-repairing agent 5 is prepared according to component proportion according to the preparation method of above-mentioned soil-repairing agent.
Comparative example 2
The component of soil-repairing agent 6: 6.2 parts of composite bacteria agent, 2.1 parts of cocoyl glucoside, 1.4 parts of myristoyl glutamate sodium,
114 parts of horsehit, 41 parts of medical stone, the composite bacteria agent are the mixture of both Verticillium lecanii and more glutinous series bacillus,
The weight ratio of the Verticillium lecanii and more glutinous series bacillus is 1.1:1.0.
Corresponding soil-repairing agent 6 is prepared according to component proportion according to the preparation method of above-mentioned soil-repairing agent.
Comparative example 3
The component of soil-repairing agent 7: 7.4 parts of composite bacteria agent, 5.6 parts of cocoyl glucoside, 120 parts of horsehit, 47 parts of medical stone, institute
State the mixture that composite bacteria agent is Verticillium lecanii, pseudomonas aeruginosa and more glutinous series bacillus threes, the lecanium
The weight ratio of verticillium sp, pseudomonas aeruginosa and more glutinous series bacillus is 1.3:1.1:1.0.
Corresponding soil-repairing agent 7 is prepared according to component proportion according to the preparation method of above-mentioned soil-repairing agent.
Comparative example 4
The component of soil-repairing agent 8: 9.3 parts of composite bacteria agent, 6.5 parts of myristoyl glutamate sodium, 123 parts of horsehit, medical stone 50
Part, the composite bacteria agent is the mixture of Verticillium lecanii, pseudomonas aeruginosa and more glutinous series bacillus threes, described
The weight ratio of Verticillium lecanii, pseudomonas aeruginosa and more glutinous series bacillus is 1.3:1.1:1.0.
Corresponding soil-repairing agent 8 is prepared according to component proportion according to the preparation method of above-mentioned soil-repairing agent.
Repairing effect test: soil is air-dried indoors and removes dynamic plant therein by a, the soil for acquiring heavy metal pollution
Object residuum, then soil is crushed it is levigate, cross 5mm nylon mesh after soil is adequately uniformly mixed；B, by the soil in step a
8 groups are divided into, then takes each 200 kilograms of soil-repairing agent 1-8 to be uniformly sprinkling upon the corresponding soil surface organized, thickness respectively
It is 3 centimetres, the dosage of soil-repairing agent is the 8% of soil quality；C, the uniform spray water into the soil of step b, the dosage of water
It is the 60% of soil quality, then soil-repairing agent and soil is uniformly mixed, repaired.Sampling in 30 days carries out repairing effect
Analysis.
By table 1 as it can be seen that the repairing effect of the embodiment of the present invention 1~4 is substantially better than comparative example 1~4.It can by comparative experiments
See that soil-repairing agent each component used in the present invention interacts, cocoyl glucoside and myristoyl glutamate sodium are mixed to form
Compound system promotes composite bacteria agent to form bacterium excrement micelle with horsehit, and dispersion, which is attached on medical stone, forms admixed finepowder, so as to
Enough effectively promote absorption and passivation of the composite bacteria agent to lead.
Claims (7)
1. a kind of restorative procedure of heavy-metal contaminated soil, it is characterised in that the following steps are included:
A, soil is air-dried indoors and removes plant and animal residues therein, then by soil by the soil for acquiring heavy metal pollution
Crush it is levigate, cross 5mm nylon mesh after soil is adequately uniformly mixed；
B, the soil surface being uniformly sprinkling upon soil-repairing agent in step a, with a thickness of 2~4 centimetres；
C, soil-repairing agent and soil, are then uniformly mixed, are repaired by the uniform spray water into the soil of step b.
2. the restorative procedure of heavy-metal contaminated soil according to claim 1, it is characterised in that: the soil-repairing agent is
It is prepared from the following raw materials in parts by weight: 5~10 parts of composite bacteria agent, 2~4 parts of cocoyl glucoside, myristoyl glutamate sodium 1
~3 parts, 110~130 parts of horsehit, 30~50 parts of medical stone.
3. soil-repairing agent according to claim 1 or 2, it is characterised in that the composite bacteria agent be Verticillium lecanii,
The mixtures of pseudomonas aeruginosa and more glutinous series bacillus threes, the Verticillium lecanii, pseudomonas aeruginosa and
The weight ratio of more glutinous series bacillus is 1.3:1.1:1.0.
4. the restorative procedure of heavy-metal contaminated soil according to claim 1, it is characterised in that: the soil-repairing agent is
It is prepared from the following raw materials in parts by weight: 7.4 parts of composite bacteria agent, 3.4 parts of cocoyl glucoside, myristoyl glutamate sodium 2.2
Part, 120 parts of horsehit, 47 parts of medical stone, the composite bacteria agent are Verticillium lecanii, pseudomonas aeruginosa and mostly glutinous class gemma
The mixture of bacillus three, the Verticillium lecanii, pseudomonas aeruginosa and the weight ratio for sticking series bacillus are more
1.3:1.1:1.0。
5. the restorative procedure of heavy-metal contaminated soil according to claim 1, it is characterised in that: the soil-repairing agent
Dosage is the 8%~10% of soil quality.
6. the restorative procedure of heavy-metal contaminated soil according to claim 1, it is characterised in that: the use of the step c water
Amount is the 50%~70% of soil quality.
7. the restorative procedure of heavy-metal contaminated soil according to claim 1, it is characterised in that: the time of reparation be 20~
40 days.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810960535.1A CN109226248A (en) | 2018-08-22 | 2018-08-22 | A kind of restorative procedure of heavy-metal contaminated soil |
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| CN201810960535.1A CN109226248A (en) | 2018-08-22 | 2018-08-22 | A kind of restorative procedure of heavy-metal contaminated soil |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111229808A (en) * | 2020-01-15 | 2020-06-05 | 刘俊龙 | Remediation method for treating heavy metal soil pollution |
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| CN104230601A (en) * | 2014-09-15 | 2014-12-24 | 杨健 | Soil remediation agent and preparation method thereof |
| CN105170628A (en) * | 2015-10-20 | 2015-12-23 | 南京工业大学 | Method for repairing lead-polluted soil by combining plants and microorganisms |
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2018
- 2018-08-22 CN CN201810960535.1A patent/CN109226248A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104230601A (en) * | 2014-09-15 | 2014-12-24 | 杨健 | Soil remediation agent and preparation method thereof |
| CN105170641A (en) * | 2015-09-30 | 2015-12-23 | 河南行知专利服务有限公司 | Combined remediation method for heavy metal contaminated soil |
| CN105176876A (en) * | 2015-10-11 | 2015-12-23 | 卢美珍 | Preparation for contaminated soil restoration |
| CN105170628A (en) * | 2015-10-20 | 2015-12-23 | 南京工业大学 | Method for repairing lead-polluted soil by combining plants and microorganisms |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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Application publication date: 20190118 |