CN109575934A - A kind of heavy-metal contaminated soil renovation agent and the preparation method and application thereof - Google Patents
A kind of heavy-metal contaminated soil renovation agent and the preparation method and application thereof Download PDFInfo
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- CN109575934A CN109575934A CN201910070918.6A CN201910070918A CN109575934A CN 109575934 A CN109575934 A CN 109575934A CN 201910070918 A CN201910070918 A CN 201910070918A CN 109575934 A CN109575934 A CN 109575934A
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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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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01B—SOIL WORKING IN AGRICULTURE OR FORESTRY; PARTS, DETAILS, OR ACCESSORIES OF AGRICULTURAL MACHINES OR IMPLEMENTS, IN GENERAL
- A01B79/00—Methods for working soil
- A01B79/02—Methods for working soil combined with other agricultural processing, e.g. fertilising, planting
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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
- B09C1/08—Reclamation of contaminated soil chemically
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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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- 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
- B09C1/105—Reclamation of contaminated soil microbiologically, biologically or by using enzymes using fungi or plants
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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
- C09K2101/00—Agricultural use
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Soil Sciences (AREA)
- Mycology (AREA)
- Chemical & Material Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- General Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Microbiology (AREA)
- Health & Medical Sciences (AREA)
- Biotechnology (AREA)
- Molecular Biology (AREA)
- Environmental Sciences (AREA)
- Mechanical Engineering (AREA)
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- General Life Sciences & Earth Sciences (AREA)
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- Processing Of Solid Wastes (AREA)
Abstract
The invention discloses a kind of heavy-metal contaminated soil renovation agents and the preparation method and application thereof, including the raw material based on following parts by weight: 15~20 parts of humic acid ferrous iron, 15~20 parts of charcoal, 20~30 parts of pomelo peel, 15~30 parts of oyster shell powder, 1~5 part of aspergillus oryzae and 0.4~0.8 part of streptomyces microflavus.The preparation method comprises the following steps: pomelo peel S1, being cut into fragment, the surface area of the fragment is no more than 3cm*3cm；By the moisture control of the fragment 10~20%；Be added aspergillus oryzae in S2, Xiang Suoshu step S1 treated fragment and after streptomyces microflavus accumulates 5~12h, then with humic acid is ferrous, charcoal and oyster shell powder are uniformly mixed to obtain the heavy-metal contaminated soil renovation agent.Compared with prior art, the soil-repairing agent of the present invention program has good repairing effect, and no pollution to the environment.
Description
Technical field
The present invention relates to environmental technology fields, and in particular to a kind of heavy-metal contaminated soil renovation agent and preparation method thereof with
Using.
Background technique
Soil is valuable source for the survival of mankind, with manner of breathing the problems such as the grain of facing mankind, resource and environment
It closes.With the quickening of process of industrialization, soil contamination problem has become one of the thorny problem the most faced for countries in the world, soil
Pollutant in earth can be divided into inorganic pollution and organic pollutant again, wherein with heavy metal pollution in soil inorganic pollutant
It is more serious, mainly since heavy metal cannot be decomposed by edaphon, and it is easy to accumulate.It is converted into the bigger first of toxicity
Based compound, or even some are accumulated in human body by food chain with adverse concentration, and the health of human body is seriously endangered.A soil huge sum of money
Belonging to pollution has concealment and latency.Water body, atmosphere pollution are more intuitive, and soil pollution then often will by crops,
People is arrived again to animal including grain, veterinary antibiotics or by herbage, and the healthy significant change Shi Caineng of people is caused to reflect.
There is a quite long gradually cumulative process from by serious consequence is polluteed, thus there is concealment and latency, simultaneously also
With irreversibility and chronicity, soil is just difficult to restore once pollution.Its consequence has seriousness, this point and front two o'clock
It is closely related, it is very serious once discovery, once being formed with regard to bad improvement.
Currently, there are mainly two types of the approach of improvement heavy metal pollution of soil: first is that changing the presence of heavy metal in the soil
Form fixes it, reduces its migration and bioavailability in the environment；Second is that by heavy metal element from soil
It removes.Specific restorative procedure, which includes that electro reclamation, electric heating reparation, Soil leaching, chemistry are fixed, to be repaired and microorganism remediation etc., various
Method can improve soil, but electro reclamation, electric heating reparation, Soil leaching and the fixed economy repaired of chemistry to a certain extent
Higher cost, and structure or property since soil can be changed, so that this kind of repair mode can have secondary pollution；And it is micro-
Biological restoration causes its stability poor since microorganism is easy to happen variation in genetic process, it usually needs repeatedly weight
Multiple operation could remove the heavy metal contaminants in soil clean.Therefore, heavy metal pollution of soil research has been achieved
Certain progress, but most repair mode be from carrying out in a certain respect so that it has the former defective of existing method itself, if
A variety of methods can be combined, then be expected to overcome the defect of each method, meanwhile, by the synergistic effect of each method, it may make to repair
Multiple effect is more very.
Summary of the invention
The technical problems to be solved by the present invention are: provide a kind of heavy-metal contaminated soil renovation agent that repairing effect is good and
Preparation method and application.
In order to solve the above-mentioned technical problem, the technical solution adopted by the present invention are as follows: a kind of heavy-metal contaminated soil renovation agent,
Including the raw material based on following parts by weight: 15~20 parts of humic acid ferrous iron, 15~20 parts of charcoal, 20~30 parts of pomelo peel, male
15~30 parts of oyster shells, 1~5 part of aspergillus oryzae and 0.4~0.8 part of streptomyces microflavus.
Preferably, the raw material of the soil-repairing agent includes: 18~27 parts of oyster shell powder, 22~28 parts of pomelo peel, biology
16~18 parts of charcoal, 17~19 parts of humic acid ferrous iron, 2~4 parts of aspergillus oryzae and 0.4~0.8 part of streptomyces microflavus.
It is highly preferred that the raw material of the soil-repairing agent includes: humic acid ferrous 18 parts, 25 parts of pomelo peel, charcoal 17
Part, 24 parts of oyster shell powder, 3 parts of aspergillus oryzae and 0.6 part of streptomyces microflavus.
Further, the mesh number of the ostreae testa pulverata is 800~1200 mesh.
The invention also includes the preparation methods of above-mentioned soil-repairing agent, comprising the following steps:
S1, pomelo peel is cut into fragment, the surface area of the fragment is no more than 3cm*3cm；By the moisture content of the fragment
Control is 10~20%；
It is added aspergillus oryzae in S2, Xiang Suoshu step S1 treated fragment and after streptomyces microflavus accumulates 5~12h, then
It is uniformly mixed to obtain the heavy-metal contaminated soil renovation agent with humic acid ferrous iron, charcoal and oyster shell powder.
Further, the preparation method further includes the preparation manipulation of charcoal, and the preparation manipulation of the charcoal includes
Following steps: it takes wooden Chinese medicine residue carbonization to prepare charcoal crude product, then charcoal crude product is done after hydrochloric acid, nitric acid treatment
It is dry to obtain modified charcoal.
Further, the wooden Chinese medicine residue carburising step concrete operations are as follows: wooden Chinese medicine residue being taken to crush
80~120 meshes are crossed afterwards and obtain powder, 2~3h will be reacted at the powder under nitrogen protection 800~900 DEG C, are obtained the life
Object charcoal crude product.
Further, the concrete operations of the hydrochloric acid, nitric acid treatment are as follows: by charcoal crude product with 0.2~1.2mol/L's
Hydrochloric acid solution impregnate 30~50h after filter, after being washed with water to neutral drying, be cooled to room temperature, then by room but after charcoal
It being placed in the nitric acid solution of 0.4~0.8mol/L, stirring is filtered after impregnating 4~9h, it is washed with water to neutrality again, after drying
To modified charcoal.
The invention also includes application of the above-mentioned soil-repairing agent in repairing containing Cr contaminated soil.
Further, the application is the following steps are included: press 0.3~0.5 for the soil-repairing agent and soil to be repaired:
100 mixing.
The beneficial effects of the present invention are: in pomelo peel rich in a large amount of lignin, cellulose, polysaccharide and pectin etc. at
Point, thus with a variety of functional groups having an effect with heavy metal, it can be used as the adsorbent of heavy metal ion；It is rich in charcoal
Organic carbon, both the heavy metal in adsorbable soil improved soil environment, moreover it is possible to increase soil fertility；Humic acid ferrous iron has good
Reproducibility, heavy metal ion can be reduced to the lower valence state of toxicity, to reduce the toxicity of heavy metal in soil；Oyster shell
Powder has good adsorptivity, it can be avoided to migrate the heavy metal ion adsorbed fixation in soil；Aspergillus oryzae can incite somebody to action
The elements such as organic matter and phosphorus contained in soil, potassium become nutrition required for plant growth, and generate a large amount of beneficial microbes,
Crop production is stimulated, the soil organism is promoted, improves soil texture；Simultaneously, moreover it is possible to promote the formation of Soil Humus and divide
Solution promotes soil itself to the repair ability of heavy metal；Contain auxin, antibiotic, amber in the metabolite of streptomyces microflavus
Nitrogen, phosphorus, potassium in soil can be improved soil by growth regulating ingredient necessary to the plant growths such as amber acid and the basic element of cell division
Earth fertility reduces fertilizer amount, so that the reparation to soil has lasting validity；Meanwhile streptomyces microflavus can cooperate with promotion
The formation of humic acid promotes soil itself to the repair ability of heavy metal pollution, in addition, streptomyces microflavus can also improve soil plate
Tie situation.
Specific embodiment
To explain the technical content, the achieved purpose and the effect of the present invention in detail, it is explained below in conjunction with embodiment.
The embodiment of the present invention are as follows: a kind of heavy-metal contaminated soil renovation agent, including the raw material based on following parts by weight: humic
Sour ferrous iron 15~20 parts, 15~20 parts of charcoal, 20~30 parts of pomelo peel, 15~30 parts of oyster shell powder, 1~5 part of aspergillus oryzae
With 0.4~0.8 part of streptomyces microflavus.
The invention also includes the preparation methods of above-mentioned soil-repairing agent, comprising the following steps:
S1, pomelo peel is cut into fragment, the surface area of the fragment is no more than 3cm*3cm；By the moisture content of the fragment
Control is 10~20%；
It is added aspergillus oryzae in S2, Xiang Suoshu step S1 treated fragment and after streptomyces microflavus accumulates 5~12h, then
It is uniformly mixed to obtain the heavy-metal contaminated soil renovation agent with humic acid ferrous iron, charcoal and oyster shell powder.
The preparation method further includes the preparation manipulation of charcoal, the preparation manipulation of the charcoal the following steps are included:
It takes wooden Chinese medicine residue carbonization to prepare charcoal crude product, then charcoal crude product is dried to obtain after hydrochloric acid, nitric acid treatment and is changed
The charcoal of property.Contain a large amount of wood-fibred in wooden Chinese medicine residue, water absorption and swelling is good, and charcoal obtained contains largely
Pore structure, meanwhile, wooden Chinese medicine residue can also prevent the growth and breeding of smelly bacterium, mould well.
The wooden Chinese medicine residue carburising step concrete operations are as follows: take wooden Chinese medicine residue smash it through 80~
120 meshes obtain powder, 2~3h will be reacted at the powder under nitrogen protection 800~900 DEG C, obtain the charcoal crude product.
The concrete operations of the hydrochloric acid, nitric acid treatment are as follows: soak the charcoal crude product hydrochloric acid solution of 0.2~1.2mol/L
Filter after 30~50h of bubble, after being washed with water to neutral drying, be cooled to room temperature, then by room but after charcoal be placed in 0.4~
In the nitric acid solution of 0.8mol/L, stirring is filtered after impregnating 4~9h, is washed with water to neutrality again, and modification is obtained after drying
Charcoal.By acid activation treated charcoal may make heavy metal ion groups such as the Cr (VI) with negative electricity to positively charged
The charcoal surface migration of lotus restores the heavy metal ion such as Cr (VI) by the strong reducing property of humic acid ferrous iron, can after reduction
Complex reaction occurs with the functional group on charcoal.
The invention also includes application of the above-mentioned soil-repairing agent in repairing containing Cr contaminated soil, including following step
It is rapid: the soil-repairing agent to be mixed with soil to be repaired by 0.4:100, measuring Cr (VI) concentration before mixing in soil is
3231.8mg/kg。
By each component in raw material by soil-repairing agent obtained after different proportion aglycon, repairing effect (is surveyed again after 5 days
Determine the content of Cr in soil) as shown in table 1 below:
1 soil remediation agent prescription of table and repairing effect table
| Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | |
| Oyster shell powder parts by weight | 15 | 20 | 25 | 30 |
| Pomelo peel parts by weight | 20 | 24 | 28 | 30 |
| Charcoal parts by weight | 15 | 17 | 18 | 20 |
| Humic acid ferrous iron parts by weight | 15 | 16 | 18 | 20 |
| Aspergillus oryzae parts by weight | 1 | 2 | 4 | 5 |
| Streptomyces microflavus parts by weight | 0.4 | 0.6 | 0.7 | 0.8 |
| Cr (VI) concentration mg/kg | 208.43 | 115.21 | 89.34 | 188.9 |
As can be seen from the above table, the soil-repairing agent of scheme can quickly and efficiently realize Cr in soil (VI) through the invention
Reparation.
The above description is only an embodiment of the present invention, is not intended to limit the scope of the invention, all to utilize this hair
Equivalents made by bright description are applied directly or indirectly in relevant technical field, are similarly included in this hair
In bright scope of patent protection.
Claims (10)
1. a kind of heavy-metal contaminated soil renovation agent, it is characterised in that: including the raw material based on following parts by weight: humic acid is ferrous
15~20 parts, 15~20 parts of charcoal, 20~30 parts of pomelo peel, 15~30 parts of oyster shell powder, 1~5 part of aspergillus oryzae and thin Huang
0.4~0.8 part of streptomycete.
2. heavy-metal contaminated soil renovation agent according to claim 1, it is characterised in that: the raw material of the soil-repairing agent
It include: 18~27 parts of oyster shell powder, 22~28 parts of pomelo peel, 16~18 parts of charcoal, 17~19 parts of humic acid ferrous iron, aspergillus oryzae
2~4 parts and 0.4~0.8 part of streptomyces microflavus of bacterium.
3. heavy-metal contaminated soil renovation agent according to claim 2, it is characterised in that: the raw material of the soil-repairing agent
It include: 18 parts ferrous humic acid, 25 parts of pomelo peel, 17 parts of charcoal, 24 parts of oyster shell powder, 3 parts of aspergillus oryzae and thin yellow strepto-
0.6 part of bacterium.
4. heavy-metal contaminated soil renovation agent according to claim 1, it is characterised in that: the mesh number of the ostreae testa pulverata is
800~1200 mesh.
5. a kind of preparation method of soil-repairing agent according to any one of claims 1-4, it is characterised in that: including following step
It is rapid:
S1, pomelo peel is cut into fragment, the surface area of the fragment is no more than 3cm*3cm；By the moisture control of the fragment
10~20%；
Be added aspergillus oryzae in S2, Xiang Suoshu step S1 treated fragment and after streptomyces microflavus accumulates 5~12h, then with corruption
It grows sour ferrous, charcoal and oyster shell powder is uniformly mixed and obtains the heavy-metal contaminated soil renovation agent.
6. the preparation method of soil-repairing agent according to claim 5, it is characterised in that: the preparation method further includes life
The preparation manipulation of object charcoal, the preparation manipulation of the charcoal is the following steps are included: take wooden Chinese medicine residue carbonization preparation biology
Charcoal crude product, then charcoal crude product is dried to obtain modified charcoal after hydrochloric acid, nitric acid treatment.
7. the preparation method of soil-repairing agent according to claim 6, it is characterised in that: the wooden Chinese medicine residue carbon
It is as follows to change step concrete operations: taking wooden Chinese medicine residue to smash it through 80~120 meshes and obtains powder, by the powder in nitrogen
2~3h is reacted at protection is 800~900 DEG C lower, obtains the charcoal crude product.
8. the preparation method of soil-repairing agent according to claim 6, it is characterised in that: the hydrochloric acid, nitric acid treatment
Concrete operations are as follows: filter, be washed with water to after charcoal crude product is impregnated 30~50h with the hydrochloric acid solution of 0.2~1.2mol/L
After neutrality is dry, be cooled to room temperature, then by room but after charcoal be placed in the nitric acid solution of 0.4~0.8mol/L, stirring leaching
It is filtered after 4~9h of bubble, is washed with water to neutrality again, modified charcoal is obtained after drying.
9. a kind of application of soil-repairing agent according to any one of claims 1-4 in being repaired containing Cr contaminated soil.
10. application according to claim 9, it is characterised in that: the application is the following steps are included: by the soil remediation
Agent is mixed with soil to be repaired by 0.3~0.5:100.
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| CN111944535A (en) * | 2020-08-24 | 2020-11-17 | 浙江博世华环保科技有限公司 | Soil stabilizing agent and preparation method and application thereof |
| CN112811663A (en) * | 2021-01-09 | 2021-05-18 | 中新国际联合研究院 | High-concentration chromium-containing wastewater treatment method for reducing sludge production |
| CN115216304A (en) * | 2022-08-11 | 2022-10-21 | 广东省农业科学院农业质量标准与监测技术研究所 | Soil conditioner for repairing heavy metal pollution and preparation method and application thereof |
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| CN112811663A (en) * | 2021-01-09 | 2021-05-18 | 中新国际联合研究院 | High-concentration chromium-containing wastewater treatment method for reducing sludge production |
| CN115216304A (en) * | 2022-08-11 | 2022-10-21 | 广东省农业科学院农业质量标准与监测技术研究所 | Soil conditioner for repairing heavy metal pollution and preparation method and application thereof |
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Denomination of invention: A heavy metal contaminated soil remediation agent and its preparation method and application Effective date of registration: 20230615 Granted publication date: 20210119 Pledgee: Hunan Xiangjiang New Area Rural Commercial Bank Co.,Ltd. Pledgor: HUNAN NEWWORLD SCIENCE AND TECHNOLOGY Co.,Ltd. Registration number: Y2023980044115 |