CN111057551A - Soil oxidation repairing agent, preparation method and use method thereof - Google Patents
Soil oxidation repairing agent, preparation method and use method thereof Download PDFInfo
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- CN111057551A CN111057551A CN201811209123.0A CN201811209123A CN111057551A CN 111057551 A CN111057551 A CN 111057551A CN 201811209123 A CN201811209123 A CN 201811209123A CN 111057551 A CN111057551 A CN 111057551A
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- 239000002689 soil Substances 0.000 title claims abstract description 170
- 230000003647 oxidation Effects 0.000 title claims abstract description 50
- 238000007254 oxidation reaction Methods 0.000 title claims abstract description 50
- 239000003795 chemical substances by application Substances 0.000 title claims abstract description 48
- 238000000034 method Methods 0.000 title claims abstract description 31
- 238000002360 preparation method Methods 0.000 title claims abstract description 30
- 239000000843 powder Substances 0.000 claims abstract description 53
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims abstract description 42
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims abstract description 36
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 33
- 238000005507 spraying Methods 0.000 claims abstract description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 19
- 235000003891 ferrous sulphate Nutrition 0.000 claims abstract description 18
- 239000011790 ferrous sulphate Substances 0.000 claims abstract description 18
- BAUYGSIQEAFULO-UHFFFAOYSA-L iron(2+) sulfate (anhydrous) Chemical compound [Fe+2].[O-]S([O-])(=O)=O BAUYGSIQEAFULO-UHFFFAOYSA-L 0.000 claims abstract description 18
- 229910000359 iron(II) sulfate Inorganic materials 0.000 claims abstract description 18
- 239000004408 titanium dioxide Substances 0.000 claims abstract description 18
- 239000002994 raw material Substances 0.000 claims abstract description 15
- 238000005067 remediation Methods 0.000 claims description 33
- 239000002245 particle Substances 0.000 claims description 12
- 239000003610 charcoal Substances 0.000 claims description 11
- 238000005303 weighing Methods 0.000 claims description 5
- 239000007921 spray Substances 0.000 claims description 2
- 239000000203 mixture Substances 0.000 abstract description 6
- 239000003337 fertilizer Substances 0.000 description 17
- 238000012360 testing method Methods 0.000 description 17
- 239000010408 film Substances 0.000 description 16
- 239000000575 pesticide Substances 0.000 description 16
- 239000003153 chemical reaction reagent Substances 0.000 description 11
- 230000000694 effects Effects 0.000 description 11
- 230000008439 repair process Effects 0.000 description 9
- 230000007797 corrosion Effects 0.000 description 8
- 238000005260 corrosion Methods 0.000 description 8
- 239000004575 stone Substances 0.000 description 6
- 238000001514 detection method Methods 0.000 description 4
- 239000007800 oxidant agent Substances 0.000 description 4
- 230000001590 oxidative effect Effects 0.000 description 4
- 230000035699 permeability Effects 0.000 description 4
- 239000002253 acid Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 3
- 235000015097 nutrients Nutrition 0.000 description 3
- 238000001179 sorption measurement Methods 0.000 description 3
- 241000196324 Embryophyta Species 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- DEXFNLNNUZKHNO-UHFFFAOYSA-N 6-[3-[4-[2-(2,3-dihydro-1H-inden-2-ylamino)pyrimidin-5-yl]piperidin-1-yl]-3-oxopropyl]-3H-1,3-benzoxazol-2-one Chemical compound C1C(CC2=CC=CC=C12)NC1=NC=C(C=N1)C1CCN(CC1)C(CCC1=CC2=C(NC(O2)=O)C=C1)=O DEXFNLNNUZKHNO-UHFFFAOYSA-N 0.000 description 1
- 241000207199 Citrus Species 0.000 description 1
- 229920000742 Cotton Polymers 0.000 description 1
- 241001122767 Theaceae Species 0.000 description 1
- 230000000274 adsorptive effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 235000020971 citrus fruits Nutrition 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000009313 farming Methods 0.000 description 1
- 230000035558 fertility Effects 0.000 description 1
- 238000011990 functional testing Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000447 pesticide residue Substances 0.000 description 1
- 239000003504 photosensitizing agent Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 238000004162 soil erosion Methods 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
Classifications
-
- 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
- C09K17/02—Soil-conditioning materials or soil-stabilising materials containing inorganic compounds only
- C09K17/06—Calcium compounds, e.g. lime
-
- 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
-
- 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
-
- 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
-
- 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
- C09K2109/00—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE pH regulation
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Soil Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Environmental Sciences (AREA)
- Inorganic Chemistry (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Environmental & Geological Engineering (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention relates to a soil oxidation repairing agent, a preparation method and a use method thereof, wherein the soil oxidation repairing agent comprises 10-20% of diatomite, 2-5% of hydrogen peroxide, 0.05-0.08% of titanium dioxide powder, 8-10% of biochar, 0.05-0.1% of anhydrous ferrous sulfate powder and the balance of water. The preparation method comprises the steps of crushing the diatomite and mixing the crushed diatomite with anhydrous ferrous sulfate powder and titanium dioxide powder to obtain a component A; mixing hydrogen peroxide and water to obtain a component B; crushing the biochar into a component C; the specific use method is that the component A is sprayed on the ground surface of the polluted area; shallow digging the soil in the area, and harrowing the shallow dug soil after crushing so as to uniformly mix the soil with the component A and then maintaining the mixture; then spraying the component B in the area, and curing; and spraying the component C in the area, harrowing, and uniformly mixing the soil in the area and the component C, and maintaining. According to the invention, a specific preparation method and a specific using method are determined according to specific raw materials, so that the product can effectively degrade agricultural pollution and improve soil environment.
Description
Technical Field
The invention relates to the technical field of polluted soil remediation, in particular to a soil oxidation remediation agent, a preparation method and a use method thereof.
Background
With the progress of science and technology, the use of agricultural films, pesticides and fertilizers has important influence on the development of agriculture. However, the residues of agricultural films and pesticides and a large amount of fertilizer applied blindly cause serious pollution to soil, destroy the internal structure of the soil, cause soil hardening, reduce soil fertility and cause serious pesticide residue in agricultural products.
Therefore, the technical personnel in the field need to solve the problem of how to provide a soil remediation agent which can simultaneously remediate the pollution of agricultural films, pesticides and fertilizers and improve the soil property.
Disclosure of Invention
In view of the above, the invention provides a soil oxidation remediation agent capable of simultaneously remedying agricultural film, pesticide and fertilizer pollution and improving soil properties, a preparation method and a use method thereof.
In order to achieve the purpose, the invention adopts the following technical scheme:
the soil oxidation repairing agent comprises the following raw materials in percentage by weight: 10-20% of diatomite, 2-5% of hydrogen peroxide, 0.05-0.08% of titanium dioxide powder, 8-10% of biochar, 0.05-0.1% of anhydrous ferrous sulfate powder and the balance of water.
The invention has the beneficial effects that: the invention adopts titanium dioxide powder as the photosensitizer, can effectively enhance the oxidation performance of hydrogen peroxide, and can reduce the consumption of anhydrous ferrous sulfate. Residual agricultural films, pesticides and chemical fertilizers in soil can be effectively oxidized, and the soil environment can be effectively restored. Meanwhile, the diatomite and the biochar are added, wherein a small amount of soluble silicon is contained in the diatomite, a small amount of silicon elements can be provided for the growth and development of plants, and the diatomite is porous and adsorptive, is easy to absorb (absorb) and release air, moisture and nutrient solution, and has good water retention, fertilizer retention and slow release functions. But also can increase the air permeability of the soil, reduce the soil density, loosen the soil, reduce the hardening, and facilitate the air permeability, circulation and flow of the plant root system. The biochar can reduce the volume weight of soil, increase the ventilation capacity of the soil, increase the water content of the soil, increase the adsorption capacity and exchange activity of the soil and increase the utilization rate of nutrients, and can improve acid soil because the biochar is alkaline and has a pH value of 8-13. In addition, the raw materials are adopted according to a specific weight ratio, so that the raw materials can be fully utilized, and pollutants such as pesticides, fertilizers and agricultural films in soil can be effectively, rapidly and effectively degraded.
On the basis of the technical scheme, the invention can also make the following improvements:
further, the soil oxidation repairing agent comprises the following raw materials in percentage by weight: 13-18% of diatomite, 3-4% of hydrogen peroxide, 0.05-0.07% of titanium dioxide powder, 8-9% of biochar, 0.06-0.08% of anhydrous ferrous sulfate powder and the balance of water.
Further, the hydrogen peroxide is 27.5% of industrial hydrogen peroxide.
The invention also provides a preparation method of the soil oxidation repairing agent, which comprises the following steps:
(1) weighing the raw materials according to the weight percentage of the soil oxidation repairing agent;
(2) crushing diatomite in a crushing device to obtain diatomite powder for later use;
(3) uniformly mixing anhydrous ferrous sulfate powder, titanium dioxide powder and the diatomite powder obtained in the step (2) to obtain a component A;
(4) mixing hydrogen peroxide and water uniformly to obtain a component B;
(5) putting the biochar into a crushing device for crushing to obtain biochar powder as a component C.
The preparation method of the invention has the beneficial effects that: the preparation method is simple, special arrangement is not needed, the preparation cost is low, and the prepared product is quick to repair and good in effect.
Further, in the step (5), the charcoal powder is crushed to 80-100 meshes.
Further, in the step (2), the diatomite is crushed to 80-100 meshes.
The invention also provides a using method of the soil oxidation repairing agent, which comprises the following steps:
(1) the component A obtained in the step (3) of the preparation method of the soil oxidation repairing agent is sprayed on the soil surface of the polluted area;
(2) shallow digging the soil sprayed with the component A in the step (1), crushing the shallow dug soil, harrowing the soil to ensure that the crushed soil and the component A sprayed on the ground surface of the soil are uniformly mixed, and maintaining the soil for 10-20 days to obtain a primary restoration area;
(3) spraying the component B in the step (4) of the preparation method of the soil oxidation repairing agent to the primary repairing area, and maintaining the soil for 20-30 days to obtain a secondary repairing area;
(4) and (3) spraying the component C in the step (5) of the preparation method of the soil oxidation repairing agent to the re-repairing area, harrowing the re-repairing area to uniformly mix the soil and the component C sprayed on the surface of the soil, and maintaining the soil for 10-15 days.
The using method of the invention has the beneficial effects that: according to the characteristics of A, B, C three components, the invention determines the specific using method and specific steps, and can effectively and rapidly repair the soil environment. Firstly, spraying the component A, namely the anhydrous ferrous sulfate powder, the titanium dioxide powder and the diatomite powder, on the surface of the polluted land, then carrying out shallow digging and harrowing, uniformly mixing the polluted soil and the component A, and then carrying out maintenance, wherein the adsorption and repair effects of the diatomite can be fully exerted in the process; then spraying the component B, namely hydrogen peroxide and water, which is in contact with the anhydrous ferrous sulfate powder and the titanium dioxide powder in the component A to generate an oxidation effect and promote the degradation of residual pesticides, fertilizers and agricultural films in the soil; and finally, spraying the component C, which can effectively reduce the volume weight of the soil, increase the ventilation capacity of the soil, increase the water content of the soil, increase the adsorption capacity and exchange activity of the soil and increase the utilization rate of nutrients, and can improve the acid environment of the soil by utilizing the component C, namely the alkalinity of the biochar.
Further, shallow digging is carried out in the step (2) to 20-30 cm.
Further, the soil in the step (2) is crushed to a particle size of less than 10 mm.
Further, the spraying in the step (3) is spray spraying.
According to the technical scheme, compared with the prior art, the soil oxidation repairing agent, the preparation method and the use method are disclosed and provided, the proportion of the characteristics, the preparation method and the use method are determined according to the characteristics of different raw materials, the agricultural polluted soil can be reasonably, quickly and effectively repaired, chemical fertilizers, pesticides and agricultural films remained in the soil can be degraded, and the acid soil environment can be relieved. In addition, through detection, the residue of the soil remediation agent in the environment has no influence on the environment, and the soil remediation oxidant is environment-friendly and safe and has a good soil remediation effect.
Detailed Description
The technical solutions in the embodiments of the present invention are clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The soil oxidation repairing agent comprises the following raw materials in percentage by weight: 10-20% of diatomite, 2-5% of hydrogen peroxide, 0.05-0.08% of titanium dioxide powder, 8-10% of biochar, 0.05-0.1% of anhydrous ferrous sulfate powder and the balance of water.
Example 1
The soil oxidation repairing agent is prepared by weighing the following raw materials in parts by weight: 1kg of diatomite, 0.2kg of 27.5% industrial hydrogen peroxide, 0.005kg of titanium dioxide powder, 1kg of charcoal, 0.01kg of anhydrous ferrous sulfate powder and 7.785kg of water.
The preparation method of the soil oxidation repairing agent comprises the following steps:
(1) putting the diatomite into a stone crusher to crush to 80 meshes to obtain diatomite powder for later use;
(2) uniformly mixing anhydrous ferrous sulfate powder, titanium dioxide powder and the diatomite powder obtained in the step (2) to obtain a component A;
(3) uniformly mixing the hydrogen peroxide and the water to obtain a component B;
(4) putting the charcoal into a stone crusher to crush to 100 meshes to obtain charcoal powder as a component C.
The use method of the soil oxidation remediation agent comprises the following steps:
(1) according to the soil remediation oxidant: the land area is 1 kg: 10m2The ratio of (1) is 100m of the middle position of a certain citrus planting test garden in Xiantao city of Hubei province2As a contaminated area test zone 2.
(2) Spraying the component A obtained in the step (2) of the preparation method of the soil oxidation repairing agent on the soil surface of a polluted area;
(3) shallow digging the soil sprayed with the component A in the step (1) to 20cm, crushing the shallow dug soil until the particle size is less than 10mm, harrowing, uniformly mixing the crushed soil and the component A sprayed on the ground surface of the soil, and maintaining the soil for 10 days to obtain a primary restoration area;
(4) putting the component B obtained in the step (3) of the preparation method of the soil oxidation repairing agent into a spraying device to be sprayed on the primary repairing area, and maintaining the soil for 20 days to obtain a secondary repairing area;
(5) and (3) putting the component C obtained in the step (4) of the preparation method of the soil oxidation repairing agent into a sprayer to be sprayed on the re-repairing area, harrowing the re-repairing area to uniformly mix the soil and the component C sprayed on the surface of the soil, and maintaining the soil for 10 days.
Example 2
The soil oxidation repairing agent is prepared by weighing the following raw materials in parts by weight: 2kg of diatomite, 0.5kg of 27.5% industrial hydrogen peroxide, 0.006kg of titanium dioxide powder, 0.8kg of charcoal, 0.05kg of anhydrous ferrous sulfate powder and 6.644kg of water.
The preparation method of the soil oxidation repairing agent comprises the following steps:
(1) putting the diatomite into a stone crusher to crush to 100 meshes to obtain diatomite powder for later use;
(2) uniformly mixing anhydrous ferrous sulfate powder, titanium dioxide powder and the diatomite powder obtained in the step (2) to obtain a component A;
(3) uniformly mixing the hydrogen peroxide and the water to obtain a component B;
(4) putting the charcoal into a stone crusher to crush to 90 meshes to obtain charcoal powder as a component C.
The use method of the soil oxidation remediation agent comprises the following steps:
(1) according to the soil remediation oxidant: the land area is 1 kg: 10m2The ratio of (1) is 100m of the middle position of a certain tea plantation in Xiaogan City of Hubei province2As a contaminated area test zone 2.
(2) Spraying the component A obtained in the step (2) of the preparation method of the soil oxidation repairing agent on the soil surface of a polluted area;
(3) shallow digging the soil sprayed with the component A in the step (1) to 30cm, crushing the shallow dug soil until the particle size is less than 10mm, harrowing, uniformly mixing the crushed soil and the component A sprayed on the ground surface of the soil, and maintaining the soil for 20 days to obtain a primary restoration area;
(4) putting the component B obtained in the step (3) of the preparation method of the soil oxidation repairing agent into a spraying device to be sprayed on the primary repairing area, and maintaining the soil for 25 days to obtain a secondary repairing area;
(5) and (3) putting the component C obtained in the step (4) of the preparation method of the soil oxidation repairing agent into a sprayer to be sprayed on the re-repairing area, harrowing the re-repairing area to uniformly mix the soil and the component C sprayed on the surface of the soil, and maintaining the soil for 15 days.
Example 3
The soil oxidation repairing agent is prepared by weighing the following raw materials in parts by weight: 1.5kg of diatomite, 0.3kg of 27.5% industrial hydrogen peroxide, 0.008kg of titanium dioxide powder, 0.9kg of charcoal, 0.08kg of anhydrous ferrous sulfate powder and 7.212kg of water.
The preparation method of the soil oxidation repairing agent comprises the following steps:
(1) putting the diatomite into a stone crusher to crush to 90 meshes to obtain diatomite powder for later use;
(2) uniformly mixing anhydrous ferrous sulfate powder, titanium dioxide powder and the diatomite powder obtained in the step (2) to obtain a component A;
(3) uniformly mixing the hydrogen peroxide and the water to obtain a component B;
(4) putting the charcoal into a stone crusher to crush to 80 meshes to obtain charcoal powder as a component C.
The use method of the soil oxidation remediation agent comprises the following steps:
(1) according to the soil remediation oxidant: the land area is 1 kg: 10m2The ratio of (A) to (B) is 100m of the middle position of a cotton planting test garden in Wuhan City of Hubei province2As a contaminated area test zone 3.
(2) Spraying the component A obtained in the step (2) of the preparation method of the soil oxidation repairing agent on the soil surface of a polluted area;
(3) shallow digging the soil sprayed with the component A in the step (1) to 25cm, crushing the shallow dug soil until the particle size is less than 10mm, harrowing, uniformly mixing the crushed soil and the component A sprayed on the ground surface of the soil, and maintaining the soil for 15 days to obtain a primary restoration area;
(4) putting the component B obtained in the step (3) of the preparation method of the soil oxidation repairing agent into a spraying device to be sprayed on the primary repairing area, and maintaining the soil for 30 days to obtain a secondary repairing area;
(5) and (3) putting the component C obtained in the step (4) of the preparation method of the soil oxidation repairing agent into a sprayer to be sprayed on the re-repairing area, harrowing the re-repairing area to uniformly mix the soil and the component C sprayed on the surface of the soil, and maintaining the soil for 12 days.
Product function test
Functional tests were carried out using examples 1 to 3:
the repairing effect on the residual of soil pesticides, fertilizers and agricultural films;
the soil improvement effect is as follows: bulk weight, corrosion resistance, PH.
1. Test object and method
1.1 the soil in the test area 1-3 of the contaminated area before and after remediation with the reagent of examples 1-3 was tested for pesticide, fertilizer and agricultural film residue.
1.2 soil in the test area 1-3 of the contaminated area before and after remediation with the reagents of examples 1-3 was tested for volume weight and corrosion resistance.
1.21 the volume weight of the soil in the test area 1-3 of the polluted area before and after the remediation by the reagent in the embodiment 1-3 is detected by a cutting ring method;
1.22 soil erosion resistance test method for contaminated area test zones 1-3 before and after remediation with the reagents of examples 1-3: selecting 50 soil particles with the particle diameter of 0.3-0.5cm, putting the particles on a sieve with the diameter of 0.3cm, soaking the particles into water, recording the number of collapsed soil particles every 30s for 10min, and calculating the corrosion resistance index: the corrosion resistance index is (total soil particles-collapsed soil particles)/total soil particles multiplied by 100%;
1.23 the pH value of the soil is determined by adopting the national standard NY-T1377-2007 method.
2. Test results
2.1 soil from test areas 1-3 of contaminated area before and after remediation with the reagents of examples 1-3 was subjected to farming
The detection results of the residues of the pesticide, the fertilizer and the agricultural film are shown in tables 1 to 3:
TABLE 1-repairing effects of example 1 on residual pesticide, fertilizer, agricultural film in soil
TABLE 2 repairing effects on pesticide, fertilizer, agricultural film residue in soil of example 2
TABLE 3 repairing effects on pesticide, fertilizer, agricultural film residue in soil in example 3
As can be seen from tables 1-3, the soil oxidation remediation reagent of the invention can effectively and rapidly degrade pesticides, fertilizers and agricultural films in soil.
2.1 the results of the measurements of the volume weight, the corrosion resistance and the pH of the soil in the test zones 1 to 3 of the contaminated area before and after remediation with the reagents of examples 1 to 3 are shown in tables 4 to 6:
TABLE 4 bulk weight (g/cm) of soil in test zones 1-3 of contaminated area before and after remediation with the reagents of examples 1-333) Variations in
| Before repair | After repair | Detection standard | |
| Example 1 | 1.52 | 1.3 | Ring knife method |
| Example 2 | 1.46 | 1.4 | Ring knife method |
| Example 3 | 1.48 | 1.2 | Ring knife method |
TABLE 5-Change in resistance (%) to Corrosion of soil in contaminated area test zones 1-3 before and after remediation with the reagents of examples 1-3
| Before repair | After repair | |
| Example 1 | 70 | 85 |
| Example 2 | 72 | 80 |
| Example 3 | 65 | 87 |
TABLE 6-PH Change in soil of contaminated area test zones 1-3 before and after remediation with the reagents of examples 1-3
| Before repair | After repair | Detection standard | |
| Example 1 | 4.5 | 6.5 | NY-T 1377-2007 |
| Example 2 | 5 | 5.5 | NY-T 1377-2007 |
| Example 3 | 6 | 7 | NY-T 1377-2007 |
As shown in tables 4-6, the soil oxidation remediation agent of the present invention can effectively enhance the soil structure and permeability, further reduce the soil volume weight, improve the soil acidity, and effectively enhance the soil corrosion resistance.
According to the invention, the reasonable weight proportion is determined according to the specific raw materials, and the preparation method with simple process and low cost is adopted, so that the obtained soil oxidation remediation reagent can effectively degrade residual pesticides, fertilizers and agricultural films in soil, and simultaneously effectively improve the physicochemical properties of soil such as soil permeability, corrosion resistance, acidity and the like.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. The soil oxidation repairing agent is characterized by comprising the following raw materials in percentage by weight: 10-20% of diatomite, 2-5% of hydrogen peroxide, 0.05-0.08% of titanium dioxide powder, 8-10% of biochar, 0.05-0.1% of anhydrous ferrous sulfate powder and the balance of water.
2. The soil oxidation restoration agent according to claim 1, characterized by comprising the following raw materials in percentage by weight: 13-18% of diatomite, 3-4% of hydrogen peroxide, 0.05-0.07% of titanium dioxide powder, 8-9% of biochar, 0.06-0.08% of anhydrous ferrous sulfate powder and the balance of water.
3. The soil oxidation repairing agent according to any one of claims 1 to 2, wherein the hydrogen peroxide is 27.5% of industrial hydrogen peroxide.
4. The preparation method of the soil oxidation repairing agent is characterized by comprising the following steps:
(1) weighing the raw materials according to the weight percentage of the soil oxidation remediation agent of any one of claims 1 to 3;
(2) crushing diatomite in a crushing device to obtain diatomite powder for later use;
(3) uniformly mixing the anhydrous ferrous sulfate powder, the titanium dioxide powder and the diatomite powder obtained in the step (2) to obtain a component A;
(4) uniformly mixing the hydrogen peroxide and the water to obtain a component B;
(5) putting the biochar into a crushing device for crushing to obtain biochar powder as a component C.
5. The method for preparing a soil oxidation remediation agent as claimed in claim 4, wherein in step (2), the diatomite is crushed to 80-100 mesh.
6. The method for preparing a soil oxidation remediation agent as claimed in claim 4, wherein in step (5), the charcoal powder is ground to 80-100 mesh.
7. The use method of the soil oxidation repairing agent is characterized by comprising the following steps:
(1) spraying the component A in the step (3) in the claim 4 on the soil surface of the polluted area;
(2) shallow digging the soil sprayed with the component A in the step (1), crushing the shallow dug soil, harrowing the soil to ensure that the crushed soil and the component A sprayed on the ground surface of the soil are uniformly mixed, and maintaining the soil for 10-20 days to obtain a primary restoration area;
(3) spraying the component B in the step (4) of claim 4 to the primary remediation area, and maintaining the soil for 20-30 days to obtain a secondary remediation area;
(4) spraying the component C in the step (5) of claim 4 to the rehabilitating area, harrowing the rehabilitating area so that the soil is uniformly mixed with the component C sprayed on the surface of the soil, and curing the soil for 10-15 days.
8. The use method of a soil oxidation remediation agent as claimed in claim 7, wherein the shallow trench is 20-30cm in step (2).
9. The use method of a soil oxidation remediation agent according to claim 7, wherein the soil in step (2) is crushed to a particle size of less than 10 mm.
10. The method for using soil oxidation remediation agent of claim 7, wherein the spraying in step (3) is a spray spraying.
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