CN111842456A - Novel soil treatment system - Google Patents
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- CN111842456A CN111842456A CN202010736900.8A CN202010736900A CN111842456A CN 111842456 A CN111842456 A CN 111842456A CN 202010736900 A CN202010736900 A CN 202010736900A CN 111842456 A CN111842456 A CN 111842456A
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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
- B09C1/02—Extraction using liquids, e.g. washing, leaching, flotation
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
- B02C23/08—Separating or sorting of material, associated with crushing or disintegrating
- B02C23/16—Separating or sorting of material, associated with crushing or disintegrating with separator defining termination of crushing or disintegrating zone, e.g. screen denying egress of oversize material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/46—Constructional details of screens in general; Cleaning or heating of screens
- B07B1/4609—Constructional details of screens in general; Cleaning or heating of screens constructional details of screening surfaces or meshes
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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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- 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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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
- B02C23/08—Separating or sorting of material, associated with crushing or disintegrating
- B02C23/16—Separating or sorting of material, associated with crushing or disintegrating with separator defining termination of crushing or disintegrating zone, e.g. screen denying egress of oversize material
- B02C2023/165—Screen denying egress of oversize material
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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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Abstract
The invention discloses a novel soil treatment system, which belongs to the technical field of soil treatment and restoration, and comprises a soil taking device, a soil crushing device, a soil detection device, a soil leaching device, a soil drying device and a soil restoration agent adding device, wherein the soil crushing device, the soil detection device, the soil leaching device, the soil drying device and the soil restoration agent adding device are connected with each other through a conveying mechanism, the soil treatment system comprises the soil taking device, the soil crushing device, the soil detection device, the soil leaching device, the soil drying device and the soil restoration agent adding device, heavy metal contaminated soil is fully and effectively treated and restored through the processes of crushing, detection, leaching, drying, adding restoration agent and the like, and the heavy metal in the soil is quickly and effectively removed, low energy consumption, no secondary pollution and wide application prospect.
Description
Technical Field
The invention relates to the technical field of soil treatment and restoration, in particular to a novel soil treatment system.
Background
With the progress of society and the development of modern chemical industry and agriculture, the influence of human beings on the natural environment is more and more profound. From agricultural chemical fertilizers, pesticides, transgenic organisms, industrial three wastes, sewage and garbage in daily life and space garbage in national defense and aerospace industries, the problems of various environmental problems caused by the fact that the nature is not influenced are solved, and the problem of heavy metal pollution is prominent. The heavy metal pollution of the soil refers to the introduction of heavy metals into the soil due to the activities of human beings, so that the content of the heavy metals in the soil is far higher than the background value of the heavy metals in the soil, and finally the damage of a soil system and the deterioration of the ecological environment are caused. The heavy metals are Cd, Pb, Zn, Ni, Cu, Cr, Hg and metalloid As and Se.
The trend of heavy metals entering soil in the future mainly has the following aspects: adsorbing in soil; is absorbed by plants or other organisms; entering a water body; enter the atmosphere due to volatilization, etc. The heavy metals entering the ecosystem not only affect the growth of plants, but also affect the atmosphere and water resources, and directly harm the survival of human beings. In recent years, the heavy metal pollution of soil in China is aggravated, the lead pollution of blood, the cadmium pollution of urine and the like are more and more serious, and the lead pollution events of Jiangsen, the cadmium pollution of the Longjiang river section at the upstream of Guangxi Yangtze river, the pollution of a copper bond chromium mold in the poison capsule event, the copper pollution events of chocolate, and the like are inexhaustible. These results show that the heavy metal pollution of soil in China has entered a concentrated and multi-occurrence period, and the heavy metal pollution of soil has the characteristics of concealment, long-term property, irreversibility and the like, so that the method has very important environmental realistic significance for the research on the behavior and remediation of the heavy metal pollution of soil.
At present, two main approaches for soil heavy metal remediation are available: one is to purify the soil to remove the contaminants, i.e. decontamination: the other is not to purify the soil, but to change the chemical form and occurrence state of the heavy metal elements in the soil by some technical means, so as to reduce the mobility and bioavailability in the soil, namely to stabilize the heavy metal elements. There are mainly physical repair, chemical repair and biological repair according to these two routes. Physical remediation (including soil leaching, engineering measures, electric heating remediation and the like) has the advantages of thoroughness and stability, but has the disadvantages of large construction amount, high investment cost, damage to soil structure and piling or treatment of the replaced polluted soil. The biological repair comprises phytoremediation and microbial repair, wherein although the phytoremediation addresses both the symptoms and root causes, the repair period is long and the investment is large. Although the microbial remediation has low treatment cost, small disturbance to the surrounding environment and no secondary pollution, the suitable microbial resources are few, and the remediation effect is not obvious. Although the chemical repair is simple and easy to implement and takes effect quickly, the dosage of the repair agent is large, and the heavy metal elements are easy to activate.
In the face of the current situation that heavy metal pollution is increasingly serious: the pollution area is large, the pollutant content is high, and a single remediation technology is not compelling, so that a novel soil remediation system for remedying and remedying heavy metal polluted soil is urgently needed.
Disclosure of Invention
1. Technical problem to be solved
Aiming at the problems in the prior art, the invention aims to provide a novel soil treatment system which comprises a soil taking device, a soil crushing device, a soil detection device, a soil washing device, a soil drying device and a soil repairing agent adding device.
2. Technical scheme
In order to solve the above problems, the present invention adopts the following technical solutions.
A novel soil treatment system comprises a soil taking device, a soil crushing device, a soil detection device, a soil leaching device, a soil drying device and a soil repairing agent adding device, wherein the soil crushing device, the soil detection device, the soil leaching device, the soil drying device and the soil repairing agent adding device are connected with one another through a conveying mechanism;
the soil taking device is a soil excavating mechanism and is used for collecting soil and conveying the soil into the soil crushing device;
the soil crushing device is a shear type coarse crusher and is used for crushing and refining soil;
the soil detection device comprises a soil detection module for detecting the pollution degree of soil;
the soil leaching device comprises a spraying device, an oscillator, a centrifugal machine and a membrane filtering mechanism and is used for leaching the refined soil;
the soil drying device is a hot air dryer and is used for drying the soil after the soil is washed by the hot air;
the soil remediation agent adding device is a mixer and is used for fully stirring and mixing the dried soil and the soil remediation agent.
Furthermore, the soil crushing device also comprises a vibration screening mechanism for screening the crushed soil, and a screen mesh used by the vibration screening mechanism is a vibrating screen of 80-150 meshes.
Further, soil detection device still includes data collection processing module, data transmission module, database and main server module, soil detection module, data collection processing module, data transmission module and database all with main server module wireless connection, data collection processing module is used for collecting and handling the detected data, data transmission module will detect data transmission to database, main server module is used for comparing data to whole treatment process is controlled.
Further, the soil leaching process specifically comprises the following steps: feeding the crushed soil into a spraying device, spraying a soil eluting agent, feeding the soil into an oscillator for oscillating and mixing after spraying, and performing centrifugal filtration after oscillation to finish soil eluting.
Further, in the soil leaching process, the oscillation frequency is 100-.
Further, the soil eluting agent comprises oxalic acid, humic acid, sulfuric acid, oxalic acid, tea saponin and disodium ethylene diamine tetraacetate.
Further, the concentration of the oxalic acid and the humic acid is 0.15-0.3mol/L, the concentration of the sulfuric acid is 0.05-0.1mol/L, the concentration of the manganese sulfate is 0.05-0.1mol/L, the molar concentration of the oxalic acid is 0.1-0.2mol/L, the mass concentration of the tea saponin is 3-6%, and the concentration of the disodium ethylene diamine tetraacetate is 0.05-0.1 mol/L.
Further, the soil remediation agent comprises the following components in parts by weight: 35-55 parts of modified montmorillonite, 15-20 parts of plant ash, 30-50 parts of charcoal, 45-65 parts of fermented manure, 20-30 parts of activated sludge, 15-25 parts of apatite, 10-15 parts of bone meal, 5-8 parts of sodium alginate and 10-20 parts of lime powder.
Further, the preparation method of the modified montmorillonite comprises the following steps: selecting natural montmorillonite powder, adding 3-5 times of water, stirring to obtain suspension, adding high temperature molten organic polymer and sodium salt into the suspension, stirring for 24-48 hr, centrifuging to separate water from the suspension, removing supernatant, and drying at 50-70 deg.C to obtain modified montmorillonite;
wherein the material-liquid ratio of the organic polymer to the suspension is 100-150g/10L, and the organic polymer is stearic acid and polyvinyl alcohol.
Further, the fermented manure is one or a mixture of more of fermented pig manure, fermented cow manure, fermented sheep manure, fermented chicken manure and fermented duck manure, the biochar is obtained by performing high-temperature pyrolysis on a straw raw material, and the straw raw material is one or a mixture of more of wheat straw, rice straw, corn straw, rape straw and cotton straw.
3. Advantageous effects
Compared with the prior art, the invention has the advantages that:
(1) the soil treatment system comprises the soil taking device, the soil crushing device, the soil detection device, the soil leaching device, the soil drying device and the soil restoration agent adding device, heavy metal polluted soil is sufficiently and effectively treated and restored through the processes of crushing, detecting, leaching, drying, adding the restoration agent and the like, the heavy metal in the soil is quickly and effectively removed, the energy consumption is low, secondary pollution is not generated, and the soil treatment system has a wide application prospect.
(2) The soil treatment system disclosed by the invention uses the eluent with a special formula in the soil leaching process, can quickly remove heavy metals in polluted soil, and has a better effect and shorter leaching time compared with other chemical eluents.
(3) According to the soil treatment system, the used eluting agent is easy to separate from the soil, the residue is less, the residual eluting agent is easy to decompose by soil microorganisms, the secondary pollution to the soil can be effectively reduced, and the fertility of the soil can be maintained.
(4) According to the soil treatment system, the soil remediation agent with a special formula is used in the soil remediation agent adding process, so that heavy metal ions in soil can be obviously passivated, the enrichment of the heavy metal ions in crop bodies is reduced, compared with the traditional remediation agent, the soil remediation system is wide in material source and simple to prepare, the heavy metal content of farmland soil can be reduced, nutrient elements can be provided for the farmland, the application of chemical fertilizers is reduced, and economic and ecological benefits are brought.
Drawings
FIG. 1 is a schematic diagram of the present invention.
Detailed Description
The drawings in the embodiments of the invention will be combined; the technical scheme in the embodiment of the invention is clearly and completely described; obviously; the described embodiments are only some of the embodiments of the invention; but not all embodiments, are based on the embodiments of the invention; all other embodiments obtained by a person skilled in the art without making any inventive step; all fall within the scope of protection of the present invention.
Example 1:
referring to fig. 1, a novel soil treatment system comprises a soil taking device, a soil crushing device, a soil detection device, a soil leaching device, a soil drying device and a soil repairing agent adding device, wherein the soil crushing device, the soil detection device, the soil leaching device, the soil drying device and the soil repairing agent adding device are connected with one another through a conveying mechanism;
the soil taking device is a soil excavating mechanism and is used for collecting soil and conveying the soil into the soil crushing device;
the soil crushing device is a shear type coarse crusher and is used for crushing and refining soil; the soil crushing device also comprises a vibration screening mechanism for screening the crushed soil, and the screen mesh used by the vibration screening mechanism is an 80-mesh vibration screen.
The soil detection device comprises a soil detection module for detecting the pollution degree of soil; soil detection device still includes data collection processing module, data transmission module, database and main server module, and soil detection module, data collection processing module, data transmission module and database all with main server module wireless connection, and data collection processing module is used for collecting and handling detection data, and data transmission module will detect data transmission to database, and main server module is used for comparing data to control whole treatment process.
The soil leaching device comprises a spraying device, an oscillator, a centrifugal machine and a membrane filtering mechanism and is used for leaching the refined soil; the soil leaching process specifically comprises the following steps: firstly, feeding the crushed soil into a spraying device, spraying a soil eluting agent, feeding the soil into an oscillator for oscillating and mixing after spraying, and centrifugally filtering after oscillating to finish soil eluting;
in the soil leaching process, the oscillation frequency is 100r/min, the oscillation time is 6h, the centrifugation rate is 2500r/min, the centrifugation time is 15min, and the filtration mode is filter membrane filtration. The soil eluting agent comprises oxalic acid, humic acid, sulfuric acid, oxalic acid, tea saponin and disodium ethylene diamine tetraacetate.
Wherein, the concentration of oxalic acid and humic acid is 0.15mol/L, the concentration of sulfuric acid is 0.05mol/L, the concentration of manganese sulfate is 0.05mol/L, the molar concentration of oxalic acid is 0.1mol/L, the mass concentration of tea saponin is 3%, and the concentration of disodium ethylene diamine tetraacetate is 0.05 mol/L.
The soil drying device is a hot air dryer and is used for carrying out hot air drying on the soil after the soil is washed;
the soil remediation agent adding device is a mixer and is used for fully stirring and mixing the dried soil and the soil remediation agent. The soil remediation agent comprises the following components in parts by weight: 35 parts of modified montmorillonite, 15 parts of plant ash, 30 parts of charcoal, 45 parts of fermented manure, 20 parts of activated sludge, 15 parts of apatite, 10 parts of bone meal, 5 parts of sodium alginate and 10 parts of lime powder.
The preparation method of the modified montmorillonite comprises the following steps: selecting natural montmorillonite powder, adding 3 times of water by mass, fully stirring to prepare a suspension, adding a high-temperature molten organic polymer and sodium salt into the suspension, continuously stirring for 24 hours, separating water in the suspension by a centrifugal method, removing supernatant, and drying at 50 ℃ to obtain modified montmorillonite;
wherein the material-liquid ratio of the organic polymer to the suspension is 100g/10L, and the organic polymer is stearic acid and polyvinyl alcohol.
The fermented manure is fermented pig manure, the biochar is obtained by performing high-temperature pyrolysis on straw raw materials, and the straw raw materials are wheat straws.
Example 2:
referring to fig. 1, a novel soil treatment system comprises a soil taking device, a soil crushing device, a soil detection device, a soil leaching device, a soil drying device and a soil repairing agent adding device, wherein the soil crushing device, the soil detection device, the soil leaching device, the soil drying device and the soil repairing agent adding device are connected with one another through a conveying mechanism;
the soil taking device is a soil excavating mechanism and is used for collecting soil and conveying the soil into the soil crushing device;
the soil crushing device is a shear type coarse crusher and is used for crushing and refining soil; the soil crushing device also comprises a vibration screening mechanism for screening the crushed soil, and a screen mesh used by the vibration screening mechanism is a 120-mesh vibration screen.
The soil detection device comprises a soil detection module for detecting the pollution degree of soil; soil detection device still includes data collection processing module, data transmission module, database and main server module, and soil detection module, data collection processing module, data transmission module and database all with main server module wireless connection, and data collection processing module is used for collecting and handling detection data, and data transmission module will detect data transmission to database, and main server module is used for comparing data to control whole treatment process.
The soil leaching device comprises a spraying device, an oscillator, a centrifugal machine and a membrane filtering mechanism and is used for leaching the refined soil; the soil leaching process specifically comprises the following steps: firstly, feeding the crushed soil into a spraying device, spraying a soil eluting agent, feeding the soil into an oscillator for oscillating and mixing after spraying, and centrifugally filtering after oscillating to finish soil eluting;
in the soil leaching process, the oscillation frequency is 150r/min, the oscillation time is 9h, the centrifugation rate is 3200r/min, the centrifugation time is 24min, and the filtration mode is filter membrane filtration. The soil eluting agent comprises oxalic acid, humic acid, sulfuric acid, oxalic acid, tea saponin and disodium ethylene diamine tetraacetate.
The concentration of oxalic acid and humic acid is 0.2mol/L, the concentration of sulfuric acid is 0.08mol/L, the concentration of manganese sulfate is 0.07mol/L, the molar concentration of oxalic acid is 0.15mol/L, the mass concentration of tea saponin is 4.5%, and the concentration of disodium ethylene diamine tetraacetate is 0.08 mol/L.
The soil drying device is a hot air dryer and is used for carrying out hot air drying on the soil after the soil is washed;
the soil remediation agent adding device is a mixer and is used for fully stirring and mixing the dried soil and the soil remediation agent. The soil remediation agent comprises the following components in parts by weight: 45 parts of modified montmorillonite, 17 parts of plant ash, 40 parts of charcoal, 55 parts of fermented manure, 25 parts of activated sludge, 20 parts of apatite, 12 parts of bone meal, 7 parts of sodium alginate and 15 parts of lime powder.
The preparation method of the modified montmorillonite comprises the following steps: selecting natural montmorillonite powder, adding 4 times of water by mass, fully stirring to prepare a suspension, adding a high-temperature molten organic polymer and sodium salt into the suspension, continuously stirring for 36 hours, separating water in the suspension by a centrifugal method, removing supernatant, and drying at 60 ℃ to obtain modified montmorillonite;
wherein the material-liquid ratio of the organic polymer to the suspension is 100g/10L, and the organic polymer is stearic acid and polyvinyl alcohol.
The fermented manure is a mixture of fermented pig manure and fermented cow manure, the biochar is obtained by performing high-temperature pyrolysis on a straw raw material, and the straw raw material is a mixture of wheat straw and rice straw.
Example 3:
referring to fig. 1, a novel soil treatment system comprises a soil taking device, a soil crushing device, a soil detection device, a soil leaching device, a soil drying device and a soil repairing agent adding device, wherein the soil crushing device, the soil detection device, the soil leaching device, the soil drying device and the soil repairing agent adding device are connected with one another through a conveying mechanism;
the soil taking device is a soil excavating mechanism and is used for collecting soil and conveying the soil into the soil crushing device;
the soil crushing device is a shear type coarse crusher and is used for crushing and refining soil; the soil crushing device also comprises a vibration screening mechanism for screening the crushed soil, and the screen mesh used by the vibration screening mechanism is a 150-mesh vibration screen.
The soil detection device comprises a soil detection module for detecting the pollution degree of soil; soil detection device still includes data collection processing module, data transmission module, database and main server module, and soil detection module, data collection processing module, data transmission module and database all with main server module wireless connection, and data collection processing module is used for collecting and handling detection data, and data transmission module will detect data transmission to database, and main server module is used for comparing data to control whole treatment process.
The soil leaching device comprises a spraying device, an oscillator, a centrifugal machine and a membrane filtering mechanism and is used for leaching the refined soil; the soil leaching process specifically comprises the following steps: firstly, feeding the crushed soil into a spraying device, spraying a soil eluting agent, feeding the soil into an oscillator for oscillating and mixing after spraying, and centrifugally filtering after oscillating to finish soil eluting;
in the soil leaching process, the oscillation frequency is 200r/min, the oscillation time is 12h, the centrifugation rate is 4000r/min, the centrifugation time is 30min, and the filtration mode is filter membrane filtration. The soil eluting agent comprises oxalic acid, humic acid, sulfuric acid, oxalic acid, tea saponin and disodium ethylene diamine tetraacetate.
The concentration of oxalic acid and humic acid is 0.3mol/L, the concentration of sulfuric acid is 0.1mol/L, the concentration of manganese sulfate is 0.1mol/L, the molar concentration of oxalic acid is 0.2mol/L, the mass concentration of tea saponin is 6%, and the concentration of disodium ethylenediamine tetraacetic acid is 0.1 mol/L.
The soil drying device is a hot air dryer and is used for carrying out hot air drying on the soil after the soil is washed;
the soil remediation agent adding device is a mixer and is used for fully stirring and mixing the dried soil and the soil remediation agent. The soil remediation agent comprises the following components in parts by weight: 55 parts of modified montmorillonite, 20 parts of plant ash, 50 parts of charcoal, 65 parts of fermented manure, 30 parts of activated sludge, 25 parts of apatite, 15 parts of bone meal, 8 parts of sodium alginate and 20 parts of lime powder.
The preparation method of the modified montmorillonite comprises the following steps: selecting natural montmorillonite powder, adding 5 times of water by mass, fully stirring to prepare a suspension, adding a high-temperature molten organic polymer and sodium salt into the suspension, continuously stirring for 48 hours, separating water in the suspension by a centrifugal method, removing supernatant, and drying at 70 ℃ to obtain modified montmorillonite;
wherein the material-liquid ratio of the organic polymer to the suspension is 150g/10L, and the organic polymer is stearic acid and polyvinyl alcohol.
The fermented manure is a mixture of fermented pig manure, fermented cow manure and fermented duck manure, the biochar is obtained by performing high-temperature pyrolysis on straw raw materials, and the straw raw materials are a mixture of wheat straws, rape straws and cotton straws.
The above; but are merely preferred embodiments of the invention; the scope of the invention is not limited thereto; any person skilled in the art is within the technical scope of the present disclosure; the technical scheme and the improved concept of the invention are equally replaced or changed; are intended to be covered by the scope of the present invention.
Claims (10)
1. The utility model provides a novel soil treatment system, includes that it adds device, its characterized in that to get soil device, soil reducing mechanism, soil detection device, soil drip washing device, soil drying device and soil remediation agent: the soil crushing device, the soil detection device, the soil leaching device, the soil drying device and the soil restoration agent adding device are connected with one another through the conveying mechanism;
the soil taking device is a soil excavating mechanism and is used for collecting soil and conveying the soil into the soil crushing device;
the soil crushing device is a shear type coarse crusher and is used for crushing and refining soil;
the soil detection device comprises a soil detection module for detecting the pollution degree of soil;
the soil leaching device comprises a spraying device, an oscillator, a centrifugal machine and a membrane filtering mechanism and is used for leaching the refined soil;
the soil drying device is a hot air dryer and is used for drying the soil after the soil is washed by the hot air;
the soil remediation agent adding device is a mixer and is used for fully stirring and mixing the dried soil and the soil remediation agent.
2. The novel soil remediation system of claim 1, wherein: the soil crushing device also comprises a vibration screening mechanism for screening the crushed soil, and a screen mesh used by the vibration screening mechanism is a vibrating screen of 80-150 meshes.
3. The novel soil remediation system of claim 1, wherein: soil detection device still includes data collection processing module, data transmission module, database and main server module, soil detection module, data collection processing module, data transmission module and database all with main server module wireless connection, data collection processing module is used for collecting and handling detection data, data transmission module will detect data transmission to the database, the main server module is used for comparing data to control whole treatment process.
4. The novel soil remediation system of claim 1, wherein: the soil leaching process comprises the following specific steps: feeding the crushed soil into a spraying device, spraying a soil eluting agent, feeding the soil into an oscillator for oscillating and mixing after spraying, and performing centrifugal filtration after oscillation to finish soil eluting.
5. The novel soil remediation system of claim 4, wherein: in the soil leaching process, the oscillation frequency is 100-.
6. The novel soil remediation system of claim 4, wherein: the soil eluting agent comprises oxalic acid, humic acid, sulfuric acid, oxalic acid, tea saponin and disodium ethylene diamine tetraacetate.
7. The novel soil remediation system of claim 6, wherein: the concentration of the oxalic acid and the humic acid is 0.15-0.3mol/L, the concentration of the sulfuric acid is 0.05-0.1mol/L, the concentration of the manganese sulfate is 0.05-0.1mol/L, the molar concentration of the oxalic acid is 0.1-0.2mol/L, the mass concentration of the tea saponin is 3-6%, and the concentration of the disodium ethylene diamine tetraacetate is 0.05-0.1 mol/L.
8. The novel soil remediation system of claim 1, wherein: the soil remediation agent comprises the following components in parts by weight: 35-55 parts of modified montmorillonite, 15-20 parts of plant ash, 30-50 parts of charcoal, 45-65 parts of fermented manure, 20-30 parts of activated sludge, 15-25 parts of apatite, 10-15 parts of bone meal, 5-8 parts of sodium alginate and 10-20 parts of lime powder.
9. The novel soil remediation system of claim 8, wherein: the preparation method of the modified montmorillonite comprises the following steps: selecting natural montmorillonite powder, adding 3-5 times of water, stirring to obtain suspension, adding high temperature molten organic polymer and sodium salt into the suspension, stirring for 24-48 hr, centrifuging to separate water from the suspension, removing supernatant, and drying at 50-70 deg.C to obtain modified montmorillonite;
wherein the material-liquid ratio of the organic polymer to the suspension is 100-150g/10L, and the organic polymer is stearic acid and polyvinyl alcohol.
10. The novel soil remediation system of claim 8, wherein: the fermented manure is one or a mixture of fermented pig manure, fermented cow manure, fermented sheep manure, fermented chicken manure and fermented duck manure, the biochar is obtained by performing high-temperature pyrolysis on straw raw materials, and the straw raw materials are one or a mixture of wheat straw, rice straw, corn straw, rape straw and cotton straw.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112958619A (en) * | 2021-02-02 | 2021-06-15 | 辽宁工程技术大学 | Fermentation chemical remediation method and device for heavy metal polluted underground water |
| CN114733892A (en) * | 2022-03-01 | 2022-07-12 | 武汉市秀谷科技有限公司 | Farmland soil copper and nickel pollution treatment method |
| CN115784561A (en) * | 2022-12-01 | 2023-03-14 | 内蒙古嗨泥环保科技有限公司 | Method for preparing nutrient soil from domestic sludge in one minute |
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