Soil treatment agent and soil treatment method based on combination of composite salt and ozone

Abstract

The invention belongs to the technical field of soil environment regulation and control, and discloses a soil treatment agent and a soil treatment method based on combination of composite salt and ozone. The soil treatment agent comprises a stable solvent and ozone dispersed in the stable solvent in the form of nanobubbles, the stable solvent comprises composite salt, a dispersing agent and water; the soil treatment method comprises the following steps: S1, mixing composite salt and a dispersing agent into water to form a stable solution; s2, ozone is pumped into the stable solvent through a nanocrystallization turbine pump, so that the ozone is dispersed into nano bubbles in the stable solvent; s3, trickle irrigation is conducted on the stable solution carrying the nanometer bubbles into the soil through a trickle irrigation system. In conclusion, the combined disinfection of the ferrate composite salt, the permanganate composite salt and the ozone is realized by utilizing the nanocrystallization turbine pump and the drip irrigation system, and the combined disinfection device has the advantages of convenience in operation, high disinfection efficiency, low cost, no pollution, no residue, environment friendliness and the like.

Description

Technical Field

[0001] The present invention belongs to the technical field of soil environment regulation, and in particular relates to a soil treatment agent and a soil treatment method based on the combination of composite salt and ozone. Background Art

[0002] Soil-borne diseases and repeated cropping have always been important issues affecting the production and increase of the planting industry. The reason is the pathogenic microorganisms in the soil and the organic matter secreted by allelopathic effects. It can be seen that soil disinfection is an important measure to prevent and control soil diseases, insect pests and weeds and improve soil quality in agricultural production.

[0003] Traditional soil treatment methods, such as chemical fumigation, pose challenges such as environmental pollution, excessive residues, and significant damage to beneficial soil microorganisms. Furthermore, chemical fumigation is not suitable for use during crop planting, disrupting farming season. Furthermore, the widely used soil disinfectant, chloropicrin, is highly toxic, causing significant pollution and high costs.

[0004] In recent years, with the increasing awareness of environmental safety, the use of the above-mentioned soil treatment agents has gradually decreased. Therefore, it has become an urgent task to develop efficient, safe, broad-spectrum, and environmentally friendly alternative soil treatment agents that meet the actual needs of agriculture as soon as possible, while taking into account some small crops and injecting fresh vitality into the diversity of soil treatment agent varieties. Summary of the Invention

[0005] In view of this, in order to solve the problems raised in the above background technology, the purpose of the present invention is to provide a soil treatment agent and disinfection method based on the combination of composite salt and ozone.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A soil treatment agent based on the combination of composite salt and ozone comprises a stabilizing solvent and ozone dispersed in the stabilizing solvent in the form of nanobubbles; the stabilizing solvent comprises composite salt, dispersant and water.

[0008] Ozone (O3) is a strong oxidant with a redox potential as high as 2.07V. Ozone decomposes rapidly in soil, producing highly oxidizing oxygen atoms. These oxygen atoms can react with the cell membranes of pathogens in the soil, disrupting their integrity and causing leakage of cell contents, ultimately killing the pathogens. Ozone can also oxidize organic pollutants in the soil, breaking them down into harmless substances such as carbon dioxide and water, thereby reducing the accumulation of harmful substances in the soil. Based on this, a nano-turbine pump can be used to form nanobubbles of ozone in water, which can then be injected into the soil through a drip irrigation system for disinfection.

[0009] Preferably, the composite salt includes a ferrate composite salt and / or a permanganate composite salt.

[0010] Both ferrate complex salts and permanganate complex salts have strong oxidizing properties. The iron in them is at a valence of +6, and can undergo oxidation reactions with proteins, lipids and other components on the bacterial cell walls and cell membranes. For example, it can oxidize the amino acid residues in the protein, leading to protein denaturation, destroying the integrity of the cell membrane, and causing the leakage of intracellular substances, thereby achieving the purpose of sterilization. As a result, its oxidizing ability is superior to that of common chlorine disinfectants, and it can quickly and effectively kill various bacteria, viruses and microorganisms, with significant disinfection effects.

[0011] The products of ferrate complex salt and permanganate complex salt disinfection are mainly iron hydroxide, which is environmentally friendly and will not produce harmful by-products such as trihalomethanes that may be formed after chlorine disinfection, thus meeting the requirements of green environmental protection.

[0012] Both ferrate complex salts and permanganate complex salts can enter the interior of bacterial cells and oxidize the active centers of various enzymes in the cells, such as respiratory enzymes and metabolic enzymes, causing the enzymes to lose their activity, thereby interfering with bacterial metabolism, substance synthesis and other physiological processes; at the same time, it can also oxidize bacterial biological macromolecules such as nucleic acids, hinder the transmission of bacterial genetic information and protein synthesis, fundamentally inhibit the growth and reproduction of bacteria, and ultimately lead to the death of microorganisms.

[0013] During the sterilization process, ferrate complex salts and permanganate complex salts undergo a series of chemical reactions. The resulting reduction products include ferric hydroxide colloid and some oxidizing intermediate-valent iron compounds. These intermediates also possess certain bactericidal properties, synergizing with the ferrate complex salt in its disinfection effect. Furthermore, ferric hydroxide colloid can adsorb bacteria, viruses, and other suspended impurities in water, removing them through flocculation and precipitation, further enhancing the disinfection effect.

[0014] Preferably, the ferrate complex salt includes one or more of potassium ferrate complex salt, sodium ferrate complex salt, and 1-butyl-3-methylimidazolium tetrachloroferrate.

[0015] Preferably, the potassium ferrate composite salt includes potassium ferrate; the sodium ferrate composite salt includes sodium ferrate.

[0016] Preferably, the potassium ferrate composite salt further comprises one or more of aminosulfonic acid, polymeric cationic quaternary ammonium salt, potassium silicate, and liquid potassium silicate; the sodium ferrate composite salt further comprises one or more of aminosulfonic acid, polymeric cationic quaternary ammonium salt, sodium silicate, and liquid sodium silicate.

[0017] Preferably, the potassium silicate includes potassium metasilicate and / or potassium disilicate; and the sodium silicate includes sodium metasilicate and / or sodium disilicate.

[0018] Preferably, the permanganate composite salt includes one or more of potassium permanganate, sodium permanganate, calcium permanganate, and zinc permanganate.

[0019] As a general inventive concept, the present invention also provides the following technical solutions:

[0020] The soil treatment method using the soil treatment agent based on the combination of complex salt and ozone disclosed above comprises:

[0021] S1. Mixing the composite salt and dispersant into water to form a stable solution;

[0022] S2. The ozone is pumped into the stable solvent by a nano-turbo pump, so that the ozone is dispersed into nanobubbles in the stable solvent;

[0023] S3. Drip the stable solution containing nanobubbles into the soil through a drip irrigation system.

[0024] Preferably, the dosage of the composite salt is 5kg to 20kg per mu.

[0025] Preferably, the amount of ozone used is 100 g / h to 1000 g / h.

[0026] Compared with the prior art, the present invention has the following beneficial effects:

[0027] In summary, the present invention utilizes ferrate complex salt, permanganate complex salt and ozone to carry out soil disinfection treatment, and the ozone is dispersed in a stable solvent in the form of nanobubbles, thereby ensuring that the composite disinfectant can continuously and effectively act on the soil, and has the advantages of high disinfection efficiency, low cost, no pollution, no residue, and environmental friendliness.

[0028] In addition, when using the soil treatment agent provided by the present invention to perform soil disinfection, it is only necessary to use a nano-turbine to disperse ozone into nanobubbles in a stable solvent, and then drip-irrigate the stable solution carrying nanobubbles into the soil through a drip irrigation system. The disinfection operation is convenient and no additional dedicated disinfection equipment is required, further reducing the cost of soil disinfection. DETAILED DESCRIPTION

[0029] To further understand the content of the present invention, the present invention is described in detail in conjunction with the embodiments. The structures, proportions, sizes, etc. shown in the present embodiments are only used to match the content disclosed in the specification, so that people familiar with this technology can understand and read them. They are not used to limit the limiting conditions that the present invention can implement, so they have no technical significance. Any modification of the structure, change in the proportional relationship, or adjustment of the size should still fall within the scope of the technical content disclosed by the present invention without affecting the efficacy and purpose that the present invention can produce. At the same time, the terms such as "upper", "lower", "left", "right", and "middle" quoted in this specification are only for the convenience of description and are not used to limit the scope of implementation. Changes or adjustments in their relative relationships should also be considered as the scope of implementation of the present invention without substantially changing the technical content. It should be noted that the terms "first", "second", etc. in the specification and claims of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way are interchangeable where appropriate, so as to facilitate the embodiments of the present application described here.

[0030] Example

[0031] This embodiment provides a soil treatment agent based on a combination of a compound salt and ozone, comprising a ferrate compound salt and / or a permanganate compound salt, ozone, and water.

[0032] Ozone (O3) is a strong oxidant with a redox potential as high as 2.07V. Ozone decomposes rapidly in soil, producing highly oxidizing oxygen atoms. These oxygen atoms can react with the cell membranes of pathogens in the soil, disrupting their integrity and causing leakage of cell contents, ultimately killing the pathogens. Ozone can also oxidize organic pollutants in the soil, breaking them down into harmless substances such as carbon dioxide and water, thereby reducing the accumulation of harmful substances in the soil. Based on this, a nano-turbine pump can be used to form nanobubbles of ozone in water, which can then be injected into the soil through a drip irrigation system for disinfection.

[0033] In this embodiment, the ferrate complex salt includes one or more of potassium ferrate complex salt, sodium ferrate complex salt, and 1-butyl-3-methylimidazolium tetrachloroferrate.

[0034] When treated with low concentrations of 1-butyl-3-methylimidazolium tetrachloroferrate, the activities of antioxidant enzymes such as superoxide dismutase (SOD), peroxidase (POD), and catalase (CAT) in plants are increased. These enzymes can remove excess reactive oxygen species in plants, reduce oxidative damage, and enable plants to adapt to the ionic liquid environment to a certain extent. This allows the soil treatment agent provided by the present invention to be harmlessly applied during crop planting.

[0035] in:

[0036] The potassium ferrate composite salt includes potassium ferrate; and further includes one or more of aminosulfonic acid, polymeric cationic quaternary ammonium salt, potassium silicate (potassium metasilicate and / or potassium disilicate), and liquid potassium silicate;

[0037] Potassium ferrate achieves its disinfection effect through its strong oxidizing property, and its specific mechanism of action is as follows:

[0038] Strong oxidizing properties destroy bacterial structure: The iron in potassium ferrate is at a valence of +6, making it extremely oxidizing. It can react with proteins, lipids, and other components of bacterial cell walls and membranes. For example, it can oxidize amino acid residues in proteins, leading to protein denaturation, destroying the integrity of cell membranes, and leaking intracellular substances, thereby achieving the purpose of sterilization. This makes its oxidizing ability superior to common disinfectants such as chlorine, and it can quickly and effectively kill various bacteria, viruses, and microorganisms with significant disinfection effects. At the same time, it can also oxidize bacterial biomacromolecules such as nucleic acids, hindering the transmission of bacterial genetic information and protein synthesis, fundamentally inhibiting bacterial growth and reproduction, and ultimately leading to the death of microorganisms.

[0039] Disinfection Products: Potassium ferrate undergoes a series of chemical reactions during the sterilization process, resulting in reduction products including ferric hydroxide colloid and several oxidizing intermediate-valent iron compounds. These intermediates also possess a degree of bactericidal activity, synergizing with potassium ferrate in its disinfection efforts. Furthermore, ferric hydroxide colloid can adsorb bacteria, viruses, and other suspended impurities in water, removing them through flocculation and precipitation, further enhancing the disinfection effect. Furthermore, the disinfection product, primarily iron hydroxide, is environmentally friendly and does not produce harmful byproducts such as trihalomethanes, which can form during chlorine disinfection. This ensures environmental friendliness.

[0040] The sodium ferrate composite salt includes sodium ferrate; and further includes one or more of aminosulfonic acid, polymeric cationic quaternary ammonium salt, sodium silicate (sodium metasilicate and / or sodium disilicate), and liquid sodium silicate;

[0041] In this embodiment, the permanganate composite salt includes one or more of potassium permanganate, sodium permanganate, calcium permanganate, and zinc permanganate.

[0042] Potassium permanganate achieves its disinfection effect through its strong oxidizing properties, and its specific mechanism of action is as follows:

[0043] Oxidation of bacterial cell walls and membranes: Bacterial cell walls and membranes are composed of a variety of biomolecules, such as proteins and lipids. Potassium permanganate can disrupt the structure and function of these biomolecules through oxidation. Potassium permanganate reacts with unsaturated fatty acids on the cell walls and membranes, sulfhydryl groups in proteins, and other groups, increasing their permeability. This leads to the leakage of intracellular substances, thus affecting the normal metabolism and physiological functions of the bacteria, ultimately causing their death.

[0044] Oxidizing intracellular enzymes and biomacromolecules: Intracellular enzymes are essential biocatalysts for bacterial metabolism, biosynthesis, and other life activities. Potassium permanganate can enter bacterial cells and oxidize key groups in enzyme molecules, such as sulfhydryls and amino groups. This damages the structure of the enzyme's active center, causing the enzyme to lose activity and, consequently, disrupting the bacterial metabolic process. Furthermore, potassium permanganate can oxidize bacterial biomacromolecules, such as nucleic acids, interfering with the transmission of genetic information and protein synthesis, fundamentally inhibiting bacterial growth and reproduction.

[0045] As mentioned above, potassium permanganate achieves its bacterial killing and disinfection effects through multiple oxidative actions, from destroying the external structure of bacteria to interfering with their internal physiological and biochemical processes. It also has a certain inhibitory and killing effect on other microorganisms such as viruses and fungi. Its mechanism of action, like its effect on bacteria, is based on its strong oxidative properties, which damage the structure and biomacromolecules of microorganisms.

[0046] If the soil treatment agent is applied directly to the soil, there may be problems such as uneven mixing that affect the disinfection effect, and the workload of manual application is also large. Therefore, the present invention also provides the following disinfection method:

[0047] The soil treatment method performed using the soil treatment agent based on the combination of composite salt and ozone provided in this embodiment includes:

[0048] S1. Mixing the composite salt and dispersant into water to form a stable solution;

[0049] S2. The ozone is pumped into the stable solvent by a nano-turbo pump, so that the ozone is dispersed into nanobubbles in the stable solvent;

[0050] S3. The stable solution containing nanobubbles is dripped into the soil through a drip irrigation system, and the dosage of the composite salt is controlled to be 5kg to 20kg per mu, and the dosage of the ozone is 100g / h to 1000g / h.

[0051] Specifically, the drip irrigation system is set to drip water at 35m 3 / mu, the ozone generator produces ozone at a rate of 300g / h, and the dosage of high manganese compound salt and high iron compound salt mixture is 10kg / mu. After disinfection, 12h, 24h, and 48h, soil samples are taken at 10cm, 20cm, and 30cm respectively. The number of microorganisms at different soil depths is measured, and the amount of microorganism reduction compared with the control group is calculated:

[0052] The number of microorganisms in uncontaminated soil was measured as a control group (including the number of microorganisms at soil depths of 10 cm, 20 cm, and 30 cm);

[0053] After 12 h of disinfection, the number of microorganisms at the soil depths of 10 cm, 20 cm, and 30 cm decreased by 95.32%, 88.48%, and 80.77% compared with that of the control group;

[0054] After 24 h of disinfection, the number of microorganisms at the soil depths of 10 cm, 20 cm, and 30 cm decreased by 80.28%, 77.65%, and 70.87% compared with that of the control group;

[0055] After 48 h of disinfection, the number of microorganisms at the soil depths of 10 cm, 20 cm, and 30 cm decreased by 60.30%, 55.34%, and 50.69% compared with that of the control group;

[0056] These results demonstrate that 48 hours after soil disinfection, the overall microbial population recovered rapidly, indicating that soil treatment does not permanently damage soil microorganisms. Furthermore, the number of pathogenic microorganisms in the soil samples was measured, and the numbers decreased by 91.45%, 89.46%, and 87.88%, respectively, after 48 hours of disinfection compared to before disinfection. This demonstrates that the soil treatment agent and soil treatment method provided by the present invention have a good disinfection effect.

[0057] In summary, the soil treatment agent and soil treatment method of the present invention have the advantages of being green, environmentally friendly, low cost, and simple to apply:

[0058] Green and environmentally friendly: The soil treatment agent and soil treatment method of the present invention can achieve zero pollution and zero residue, and can quickly restore soil microorganisms to their original levels through supplementary microbial technology.

[0059] Low cost: Compared with existing soil disinfection technologies, this technology offers significant cost advantages. Low-cost soil fumigation with chloropicrin generally costs 1,000 yuan per mu; soil fumigation with dazomet (98% active ingredient content) generally costs 800 yuan per mu; and liquid fumigant with 32.7-42.0% chlorpyrifos generally costs 1,000 yuan per mu. The soil treatment agent of this invention costs 100-200 yuan per mu.

[0060] Simple application: The soil treatment method of the present invention applies soil disinfection treatment through a drip irrigation system, without the need for other application equipment, which can reduce the labor intensity of the application process, save application costs, improve application efficiency, and ensure soil disinfection effect.

[0061] Note that the above are only preferred embodiments of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments, and substitutions can be made by those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments and may include many other equivalent embodiments without departing from the concept of the present invention. The scope of the present invention is determined by the scope of the appended claims.

Claims

1. A soil treatment agent based on a combination of composite salt and ozone, characterized in that: The invention comprises a stabilizing solvent and ozone dispersed in the stabilizing solvent in the form of nano bubbles; the stabilizing solvent comprises a composite salt, a dispersant and water.

2. A soil treatment agent based on a combination of composite salt and ozone according to claim 1, characterized in that: The composite salt includes ferrate composite salt and / or permanganate composite salt.

3. A soil treatment agent based on a combination of composite salt and ozone according to claim 2, characterized in that: The ferrate complex salt includes one or more of potassium ferrate complex salt, sodium ferrate complex salt, and 1-butyl-3-methylimidazolium tetrachloroferrate.

4. The soil treatment agent based on the combination of composite salt and ozone according to claim 3, characterized in that: The potassium ferrate composite salt includes potassium ferrate; the sodium ferrate composite salt includes sodium ferrate.

5. The soil treatment agent based on the combination of composite salt and ozone according to claim 4, characterized in that: The potassium ferrate composite salt further comprises one or more of aminosulfonic acid, polymeric cationic quaternary ammonium salt, potassium silicate, and liquid potassium silicate; the sodium ferrate composite salt further comprises one or more of aminosulfonic acid, polymeric cationic quaternary ammonium salt, sodium silicate, and liquid sodium silicate.

6. The soil treatment agent based on the combination of composite salt and ozone according to claim 5, characterized in that: The potassium silicate includes potassium metasilicate and / or potassium disilicate; the sodium silicate includes sodium metasilicate and / or sodium disilicate.

7. The soil treatment agent based on the combination of composite salt and ozone according to claim 2, characterized in that: The permanganate composite salt includes one or more of potassium permanganate, sodium permanganate, calcium permanganate, and zinc permanganate.

8. A soil treatment method using the soil treatment agent based on a combination of composite salt and ozone according to any one of claims 1 to 7, characterized in that: include: S1. Mixing the composite salt and dispersant into water to form a stable solution; S2. The ozone is pumped into the stable solvent by a nano-turbo pump, so that the ozone is dispersed into nanobubbles in the stable solvent; S3. Drip the stable solution containing nanobubbles into the soil through a drip irrigation system.

9. The soil treatment method according to claim 8, characterized in that: The dosage of the composite salt is 5kg to 20kg per mu.

10. The soil treatment method according to claim 8, characterized in that: The amount of ozone used is 100 to 1000 g / h.