CN110452705A - A kind of heavy metal pollution of soil renovation agent and preparation method thereof - Google Patents
A kind of heavy metal pollution of soil renovation agent and preparation method thereof Download PDFInfo
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- CN110452705A CN110452705A CN201910701019.1A CN201910701019A CN110452705A CN 110452705 A CN110452705 A CN 110452705A CN 201910701019 A CN201910701019 A CN 201910701019A CN 110452705 A CN110452705 A CN 110452705A
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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
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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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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K17/00—Soil-conditioning materials or soil-stabilising materials
- C09K17/40—Soil-conditioning materials or soil-stabilising materials containing mixtures of inorganic and organic compounds
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- Molecular Biology (AREA)
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Abstract
The invention discloses a kind of heavy metal pollution of soil renovation agents and preparation method thereof, are made of turfy soil, lignite, porous modification biological charcoal, composite bacterium powder, humic acid, medical stone etc. through following steps: (1) successively weighing good each material component according to the ratio；(2) lignite, medical stone are respectively fed to crush in pulverizer；(3) each raw material is all sent into high mixer and is stirred and evenly mixed；(4) mixture is formed into particle through wet granulation to get renovation agent of the present invention.Renovation agent of the invention, raw material obtain simple, preparation process science, can effectively repair all kinds of heavy metal pollutions, while conditioned soil property improvement structure, and increase nutrient has good economic value, environmental value and social value.
Description
Technical field
The invention belongs to technical field of soil remediation more particularly to a kind of heavy metal pollution of soil renovation agent and its preparation sides
Method.
Background technique
It being shown according to national Soil Pollution Investigation data, the total exceeding standard rate of national contaminated soil is 16.1%, wherein
Slightly, slightly, moderate and serious pollution point ratio be respectively 11.2%, 2.3%, 1.5% and 1.1%.Domestic dirt at present
Type is contaminated based on inorganic type, and organic type takes second place, and compound pollution specific gravity is smaller, and wherein exceeded digit of inorganic pollution accounts for entirely
The 82.8% of the exceeded point in portion.
In terms of pollution distribution situation, soils in south china pollution is even more serious compared to the north；Yangtze River Delta, Zhujiang River triangle
The partial regions such as continent, Northeastern rust belt soil contamination problem is more prominent；Southwest, variable charge soil heavy metal pollution are super
It is larger to mark range；4 kinds of cadmium, mercury, arsenic, lead level of inorganic contaminants distributions are presented from northwest to the southeast, from northeast to southwestward
The situation gradually risen.Contaminated 1.5 hundred million mu of the arable land in the whole nation, accounts for the 8.3% of total area under cultivation, and wherein most is heavy metal-polluted
Dye.Heavy metal pollution of soil can influence the decline of Crop yield and quality, and the health of the mankind can be endangered by food chain,
It can lead to the further deterioration of atmosphere and quality of water environment.Therefore the improvement of heavy metal pollution of soil has been very urgent.
Chemical means are mainly used to the recovery technique of heavy-metal contaminated soil at present, however used in the repair process
A large amount of chemical agents easily cause the recontamination of soil.Charcoal has good absorption property, and chemical property is stablized, can be dropped
The biological effectiveness of low heavy metal in soil, while can be improved crop yield, and raw material is extensive, at low cost, controlling it
It manages and has a clear superiority and application value in the soil of heavy metal pollution, but traditional biological charcoal hole is single, limited sorption capacity,
Therefore it still needs to improve with the renovation agent of its application.
Summary of the invention
The object of the invention is to remedy the disadvantages of known techniques, provide a kind of heavy metal pollution of soil renovation agent and its
Preparation method.
In order to achieve the above purpose, the present invention the following technical schemes are provided:
A kind of heavy metal pollution of soil renovation agent, the following component including each mass parts: 34-38 parts of turfy soil, lignite 10-
12 parts, 25-30 parts of porous modification biological charcoal, 5-8 parts of composite bacterium powder, 8-10 parts of humic acid, 8-12 parts of medical stone.
Preferably, the heavy metal pollution of soil renovation agent, the following component including each mass parts: 36 parts of turfy soil,
11 parts of lignite, 28 parts of porous modification biological charcoal, 7 parts of composite bacterium powder, 9 parts of humic acid, 9 parts of medical stone.
The preparation method of the porous modification biological charcoal the following steps are included:
(1) coconut husk dries pulverizing is crossed into 50-60 mesh, then be immersed in phosphoric acid solution 12-16 hours, taken out be sent into later
In high temperature furnace, it is warming up to cooling after 400-500 DEG C of constant temperature activates 2-3 hours, is washed with water after taking-up to neutral spare；
(2) above-mentioned product is immersed in 25% nitric acid solution again, stirs 4-5 hours at 50-60 DEG C, is washed with water later
To neutrality；
(3) by obtained by step 2 with etc. quality N, N dicyclohexylcarbodiimide mix and be scattered in ethylenediamine, in 110-120
DEG C reflux 24-48 hour, products therefrom clean after dry obtain porous modification biological charcoal.
The composite bacterium powder is consisted of the following compositions by mass parts: 5-6 parts of photosynthetic bacteria bacterium powder part, lactic acid bacteria bacterium powder 8-12
Part, 10-15 parts of bacillus subtilis powder, 3-5 parts of rhizobium bacterium powder, 1-3 parts of sulfide-oxidizing enzyme bacterium powder.
The bacterium powder the preparation method comprises the following steps: by each strain of liquid fermentation, desiccation is dehydrated after the completion of culture, is extracted out in strain
Oil substance, freeze-drying form bacterium powder.
The humic acid is mixed by nitro humus acid, humic acid, fulvic acid 3:1:1 in mass ratio.
A kind of preparation method of heavy metal pollution of soil renovation agent as described above, comprising the following steps:
(1) good each material component is successively weighed according to the ratio；
(2) lignite, medical stone are respectively fed to crushed 60-80 mesh in pulverizer；
(3) each raw material is all sent into high mixer and is stirred and evenly mixed；
(4) mixture is formed into particle through wet granulation to get renovation agent of the present invention.
Gained particle water content is no more than 8%, density 2.0-2.5g/cm3。
The invention has the advantages that
Heavy metal pollution of soil renovation agent of the present invention uses natural Organic Ingredients, the addition without any chemicals, in original
Material selects upper turfy soil, humic acid that soil organic matter content can be improved, and lignite, medical stone are used to improve soil aggregate structure,
Enhance stability, acid oxidase is first passed through in the preparation of porous modification biological charcoal, introduce carboxyl functional group, then is modified with ethylenediamine
The functional groups such as lactone group, amino are introduced, the binding site of biological carbon surface is substantially enriched, its porosity characteristic is cooperated to significantly improve
The activated adoption site of biological carbon materials, enhances the absorption to heavy metal, while being aided with the addition of composite bacterium powder, wherein withered
A variety of soil beneficial bacteriums such as careless bacillus, rhizobium can supplement, establish dominant microflora, and multiple-microorganism breeds metabolism jointly,
Organic, heavy-metal residual pollution in degradation, chelating soil, renovation agent of the invention, raw material obtain simple, preparation process section
Learn, can effectively repair all kinds of heavy metal pollutions, while conditioned soil property improvement structure, increase nutrient, have good economic value,
Environmental value and social value.
Specific embodiment
Below in conjunction with specific example, technical scheme is described further:
Embodiment 1
A kind of heavy metal pollution of soil renovation agent, the following component including each mass parts: 36 parts of turfy soil, 11 parts of lignite,
28 parts of porous modification biological charcoal, 7 parts of composite bacterium powder, 9 parts of humic acid, 9 parts of medical stone.
The preparation method of the porous modification biological charcoal the following steps are included:
(1) coconut husk dries pulverizing is crossed into 55 meshes, then be immersed in phosphoric acid solution 14 hours, taken out be sent into high temperature furnace later
In, it is warming up to cooling after 450 DEG C of constant temperature activate 2 hours, is washed with water after taking-up to neutral spare；
(2) above-mentioned product is immersed in 25% nitric acid solution again, stirs 5 hours at 55 DEG C, is washed with water later into
Property；
(3) by obtained by step 2 with etc. quality N, N dicyclohexylcarbodiimide mix and be scattered in ethylenediamine, returned in 115 DEG C
Stream 36 hours, drying obtains porous modification biological charcoal after products therefrom is cleaned.
Wherein composite bacterium powder is consisted of the following compositions by mass parts: 5 parts of photosynthetic bacteria bacterium powder part, 10 parts of lactic acid bacteria bacterium powder,
12 parts of bacillus subtilis powder, 4 parts of rhizobium bacterium powder, 2 parts of sulfide-oxidizing enzyme bacterium powder；Bacterium powder the preparation method comprises the following steps: passing through liquid
Ferment each strain, and desiccation is dehydrated after the completion of culture, extracts the oil substance in strain out, and freeze-drying forms bacterium powder.
Wherein humic acid is mixed by nitro humus acid, humic acid, fulvic acid 3:1:1 in mass ratio.
A kind of preparation method of heavy metal pollution of soil renovation agent as described above, comprising the following steps:
(1) good each material component is successively weighed according to the ratio；
(2) lignite, medical stone are respectively fed to crushed 70 meshes in pulverizer；
(3) each raw material is all sent into high mixer and is stirred and evenly mixed；
(4) mixture is formed into particle through wet granulation, gained particle water content is no more than 8%, density 2.2-2.3g/
cm3To get renovation agent.
Embodiment 2
A kind of heavy metal pollution of soil renovation agent, the following component including each mass parts: 34 parts of turfy soil, 10 parts of lignite,
25 parts of porous modification biological charcoal, 5 parts of composite bacterium powder, 8 parts of humic acid, 8 parts of medical stone.
The preparation method of the porous modification biological charcoal the following steps are included:
(1) coconut husk dries pulverizing is crossed into 50 meshes, then be immersed in phosphoric acid solution 12 hours, taken out be sent into high temperature furnace later
In, it is warming up to cooling after 400 DEG C of constant temperature activate 2 hours, is washed with water after taking-up to neutral spare；
(2) above-mentioned product is immersed in 25% nitric acid solution again, stirs 4 hours at 50 DEG C, is washed with water later into
Property；
(3) by obtained by step 2 with etc. quality N, N dicyclohexylcarbodiimide mix and be scattered in ethylenediamine, returned in 110 DEG C
Stream 24 hours, drying obtains porous modification biological charcoal after products therefrom is cleaned.
Wherein composite bacterium powder is consisted of the following compositions by mass parts: 5 parts of photosynthetic bacteria bacterium powder part, 8 parts of lactic acid bacteria bacterium powder, withered
Careless 10 parts of bacillus bacterium powder, 3 parts of rhizobium bacterium powder, 1 part of sulfide-oxidizing enzyme bacterium powder；Bacterium powder the preparation method comprises the following steps: pass through liquid send out
Each strain of ferment, desiccation is dehydrated after the completion of culture, extracts the oil substance in strain out, and freeze-drying forms bacterium powder.
Wherein humic acid is mixed by nitro humus acid, humic acid, fulvic acid 3:1:1 in mass ratio.
A kind of preparation method of heavy metal pollution of soil renovation agent as described above, comprising the following steps:
(1) good each material component is successively weighed according to the ratio；
(2) lignite, medical stone are respectively fed to crushed 60 meshes in pulverizer；
(3) each raw material is all sent into high mixer and is stirred and evenly mixed；
(4) mixture is formed into particle through wet granulation, gained particle water content is no more than 8%, density 2.0-2.3g/
cm3To get renovation agent.
Embodiment 3
A kind of heavy metal pollution of soil renovation agent, the following component including each mass parts: 38 parts of turfy soil, 12 parts of lignite,
30 parts of porous modification biological charcoal, 8 parts of composite bacterium powder, 10 parts of humic acid, 12 parts of medical stone.
The preparation method of the porous modification biological charcoal the following steps are included:
(1) coconut husk dries pulverizing is crossed into 60 meshes, then be immersed in phosphoric acid solution 16 hours, taken out be sent into high temperature furnace later
In, it is warming up to cooling after 500 DEG C of constant temperature activate 3 hours, is washed with water after taking-up to neutral spare；
(2) above-mentioned product is immersed in 25% nitric acid solution again, stirs 5 hours at 60 DEG C, is washed with water later into
Property；
(3) by obtained by step 2 with etc. quality N, N dicyclohexylcarbodiimide mix and be scattered in ethylenediamine, returned in 120 DEG C
Stream 48 hours, drying obtains porous modification biological charcoal after products therefrom is cleaned.
Wherein composite bacterium powder is consisted of the following compositions by mass parts: 6 parts of photosynthetic bacteria bacterium powder part, 12 parts of lactic acid bacteria bacterium powder,
15 parts of bacillus subtilis powder, 5 parts of rhizobium bacterium powder, 3 parts of sulfide-oxidizing enzyme bacterium powder；Bacterium powder the preparation method comprises the following steps: passing through liquid
Ferment each strain, and desiccation is dehydrated after the completion of culture, extracts the oil substance in strain out, and freeze-drying forms bacterium powder.
Wherein humic acid is mixed by nitro humus acid, humic acid, fulvic acid 3:1:1 in mass ratio.
A kind of preparation method of heavy metal pollution of soil renovation agent as described above, comprising the following steps:
(1) good each material component is successively weighed according to the ratio；
(2) lignite, medical stone are respectively fed to crushed 80 meshes in pulverizer；
(3) each raw material is all sent into high mixer and is stirred and evenly mixed；
(4) mixture is formed into particle through wet granulation, gained particle water content is no more than 8%, density 2.2-2.5g/
cm3To get renovation agent.
Embodiments described above is only a part of the embodiment of the present invention, instead of all the embodiments.Based on this
Embodiment in invention, every other reality obtained by those of ordinary skill in the art without making creative efforts
Example is applied, shall fall within the protection scope of the present invention.
Claims (8)
1. a kind of heavy metal pollution of soil renovation agent, which is characterized in that the following component including each mass parts: turfy soil 34-38
Part, 10-12 parts of lignite, 25-30 parts of porous modification biological charcoal, 5-8 parts of composite bacterium powder, 8-10 parts of humic acid, 8-12 parts of medical stone.
2. heavy metal pollution of soil renovation agent according to claim 1, which is characterized in that including each mass parts such as the following group
Point: 36 parts of turfy soil, 11 parts of lignite, 28 parts of porous modification biological charcoal, 7 parts of composite bacterium powder, 9 parts of humic acid, 9 parts of medical stone.
3. heavy metal pollution of soil renovation agent according to claim 1, which is characterized in that the porous modification biological charcoal
Preparation method the following steps are included:
(1) coconut husk dries pulverizing is crossed into 50-60 mesh, then be immersed in phosphoric acid solution 12-16 hours, taken out be sent into high temperature later
In furnace, it is warming up to cooling after 400-500 DEG C of constant temperature activates 2-3 hours, is washed with water after taking-up to neutral spare；
(2) above-mentioned product is immersed in 25% nitric acid solution again, stirs 4-5 hours at 50-60 DEG C, is washed with water later into
Property；
(3) by obtained by step 2 with etc. quality N, N dicyclohexylcarbodiimide mix and be scattered in ethylenediamine, returned in 110-120 DEG C
Stream 24-48 hours, drying obtains porous modification biological charcoal after products therefrom is cleaned.
4. heavy metal pollution of soil renovation agent according to claim 1, which is characterized in that the composite bacterium powder presses mass parts
Consist of the following compositions: 5-6 parts of photosynthetic bacteria bacterium powder part, 8-12 parts of lactic acid bacteria bacterium powder, 10-15 parts of bacillus subtilis powder,
3-5 parts of rhizobium bacterium powder, 1-3 parts of sulfide-oxidizing enzyme bacterium powder.
5. heavy metal pollution of soil renovation agent according to claim 4, which is characterized in that the preparation method of the bacterium powder
Are as follows: by each strain of liquid fermentation, desiccation is dehydrated after the completion of culture, extracts the oil substance in strain out, and freeze-drying forms bacterium
Powder.
6. heavy metal pollution of soil renovation agent according to claim 1, which is characterized in that the humic acid is by nitro humic
Acid, humic acid, fulvic acid 3:1:1 in mass ratio are mixed.
7. a kind of preparation method of heavy metal pollution of soil renovation agent as described in claim 1, which is characterized in that including following
Step:
(1) good each material component is successively weighed according to the ratio；
(2) lignite, medical stone are respectively fed to crushed 60-80 mesh in pulverizer；
(3) each raw material is all sent into high mixer and is stirred and evenly mixed；
(4) mixture is formed into particle through wet granulation to get renovation agent of the present invention.
8. the preparation method of heavy metal pollution of soil renovation agent according to claim 7, which is characterized in that gained particle contains
Water is no more than 8%, density 2.0-2.5g/cm3。
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Cited By (5)
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| CN111167851A (en) * | 2020-01-16 | 2020-05-19 | 张君 | Remediation method for applying humic acid to soil remediation |
| CN111423886A (en) * | 2020-03-19 | 2020-07-17 | 新疆农业科学院土壤肥料与农业节水研究所(新疆维吾尔自治区新型肥料研究中心) | Bioactive preparation, preparation method and application thereof |
| CN111500294A (en) * | 2020-05-20 | 2020-08-07 | 山东根力多农业发展有限公司 | Biological soil conditioner and preparation method thereof |
| CN112457862A (en) * | 2020-12-07 | 2021-03-09 | 武汉瑞泽园生物环保科技股份有限公司 | Biological soil conditioner and application thereof |
| CN115433586A (en) * | 2022-09-23 | 2022-12-06 | 江苏大学 | Soil remediation agent for heavy metal pollution treatment and preparation method thereof |
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Application publication date: 20191115 |