Soil pollution treatment system and method and application thereof

Abstract

The invention relates to the related technical field of soil pollution remediation, and discloses a soil pollution treatment system and method and application thereof, and the system comprises a multi-dimensional dynamic monitoring module which is used for collecting soil temperature, humidity, pH value, organic pollutant concentration and heavy metal concentration in real time; the data analysis and trend prediction module is used for dynamically predicting the pollution diffusion trend based on the pollution diffusion and reaction kinetic model; the repairing agent intelligent regulation and control module dynamically adjusts the type and proportion of a repairing agent according to the pollution type and concentration; the precise remediation module adopts a negative pressure extraction technology and a high-pressure injection technology and is used for realizing remediation of soil at different depths; the intelligent feedback and optimization module is used for monitoring a repair process and adjusting a repair strategy in real time; the following effects can be realized: pollution distribution and diffusion paths are evaluated in real time; dynamically optimizing the dosage and proportion of the repairing agent; synchronous restoration of organic matters and heavy metals is realized; secondary pollution is reduced, and the sustainable utilization capability of the soil is improved.

Description

Technical Field

[0001] The present invention belongs to the technical field related to soil pollution remediation, and more specifically, particularly relates to a soil pollution control system, method and application thereof. Background Art

[0002] Soil remediation is a technical measure to restore the normal function of contaminated soil. There are many reasons for soil pollution, such as industrial sludge, agricultural use of garbage, sewage irrigation, atmospheric pollutant deposition, large-scale use of mineral fertilizers and pesticides containing heavy metals, etc. Soil remediation refers to the use of physical, chemical and biological methods to transfer, absorb, degrade and transform pollutants in the soil to reduce their concentration to an acceptable level, or to convert toxic and harmful pollutants into harmless substances.

[0003] Soil pollution problems mainly come from industrial waste emissions, the use of agricultural chemicals, etc., which seriously threaten the ecological environment and human health.

[0004] The existing soil remediation technology has the following problems: 1. Static monitoring is delayed and cannot capture pollution spread in time; 2. The repair plan lacks specificity and is inefficient; 3. The treatment process is time-consuming, costly, and prone to secondary pollution.

[0005] Therefore, in view of this, research and improvement are conducted on the existing structure and deficiencies, and a soil pollution control system, method and application thereof are provided, in order to achieve a more practical and valuable purpose. Summary of the invention

[0006] The present invention provides a soil pollution control system, method and application thereof, which are used to overcome the above-mentioned defects in the prior art.

[0007] The purpose and efficacy of the soil pollution control system, method and application thereof of the present invention are achieved by the following specific technical means: A soil pollution control system, comprising: Multi-dimensional dynamic monitoring module, used to collect soil temperature, humidity, pH value, organic pollutant concentration and heavy metal concentration in real time; Data analysis and trend prediction module, based on pollution diffusion and reaction kinetics model, dynamically predicts pollution diffusion trend; The intelligent control module of the repair agent dynamically adjusts the type and ratio of the repair agent according to the pollution type and concentration; Precision remediation module, including negative pressure extraction technology and high pressure injection technology, to achieve the remediation of soil at different depths; Intelligent feedback and optimization module, used to monitor the repair process and adjust the repair strategy in real time.

[0008] In a further technical solution, the data analysis and trend prediction module adopts the following pollution trend prediction equation: ;in, : Pollution trend at a certain moment; C: Pollutant concentration; : diffusion gradient; R: external pollution input intensity; S: soil self-purification capacity; : Dynamic weight coefficient.

[0009] In a further technical solution, the repair agent ratio of the repair agent intelligent control module is dynamically calculated by the following formula: ;in, : The proportion of the i-th component of the repair agent; : The concentration of pollutant type i; : Weight coefficient of pollutant category i.

[0010] As a further technical solution, the precise remediation module comprises: a negative pressure extraction device for removing volatile organic compounds (VOCs) in the soil, with an extraction rate of not less than 85%.

[0011] As a further technical solution, the precision repair module further includes: a high-pressure injection device, which is positioned by a robot arm to achieve dynamic adjustment of the injection pressure, and its calculation formula is: ;in, : injection pressure; : Pressure adjustment coefficient; : soil viscosity coefficient; : Injection radius.

[0012] According to another aspect of the present disclosure, there is provided a method for soil pollution control, comprising: S1: Use the multi-dimensional dynamic monitoring module to collect soil data, including pollutant concentration, temperature and humidity; S2: Calculate the pollution diffusion trend based on the data analysis and trend prediction module, using the following model: ; Where D is the diffusion coefficient, k is the attenuation coefficient, and S is the input intensity of the pollution source; S3: Use the repair agent intelligent control module to dynamically adjust the repair agent formula according to the pollution type; S4: Use the precision remediation module to remediate contaminated soil.

[0013] In a further technical solution, the repair agent control module supports the adjustment of the ratio of the composite repair agent, wherein: For petroleum hydrocarbon pollution, the remediation agent formula includes degrading bacterial liquid and diatomaceous earth; For heavy metal pollution, the remediation agent formula includes bentonite, potassium humate and chelating agent.

[0014] As a further technical solution, an intelligent feedback and optimization module is used in the repair process to dynamically adjust the repair path based on the following energy consumption optimization model: ;in, is the total energy consumption; is the power consumption of the device; The cost of the repair agent.

[0015] Further technical solution, the method is applicable to the treatment of composite pollution, the pollution types include: Soil pollution where petroleum hydrocarbons and heavy metals coexist; soil contamination where petroleum hydrocarbons coexist with other organic matter; Heavy metal compound pollution.

[0016] According to another aspect of the present disclosure, a soil pollution control application is provided, characterized in that the system and method are applicable to the following scenarios: Pollution control of industrial sites; Management of agricultural chemical residues; Restoration of abandoned mine sites.

[0017] Compared with the prior art, the present invention has the following beneficial effects: A soil pollution control system, method and application thereof of the present invention can achieve the following effects: Dynamic monitoring and trend prediction: real-time assessment of pollution distribution and diffusion path; Intelligent repair agent regulation: Dynamically optimize the amount and ratio of repair agents; Collaborative treatment of complex pollution: achieving simultaneous restoration of organic matter and heavy metals; Environmentally friendly design: reduce secondary pollution and improve the sustainable utilization capacity of soil. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1 is a schematic diagram of a method flow according to an exemplary embodiment of the present disclosure; Figure 2 is a system block diagram according to an exemplary embodiment of the present disclosure. DETAILED DESCRIPTION

[0020] The following embodiments of the present invention are described in further detail in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0021] In the description of the present invention, unless otherwise specified, "plurality" means two or more than two; the orientations or positional relationships indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0022] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0023] As attached Figure 1 To Attachment Figure 2 As shown: The present invention provides a soil pollution control system, comprising: 1. Multi-dimensional dynamic monitoring module Equipped with high-precision sensors to collect real-time data on soil temperature, humidity, pH value, organic pollutant concentration, heavy metal concentration, etc. Automatically arrange sensors and adjust sampling density according to the complexity of the polluted area.

[0024] Multi-dimensional dynamic monitoring module, data is uploaded to the cloud platform through LoRa wireless transmission technology, and edge computing is used to achieve real-time data processing to generate pollution heat maps.

[0025] 2. Data analysis and trend prediction module Based on the pollution diffusion and reaction kinetics model, the pollution diffusion trend is predicted in real time: ; in:, : Pollution trend at a certain moment; C: pollutant concentration; : diffusion gradient; R: external pollution input intensity; S: soil self-purification capacity; : Dynamic weight coefficient.

[0026] 3. Repair agent intelligent control module Dynamically adjust the ratio of the repair agent according to the pollution type, concentration and trend: ; in: : The proportion of the i-th component of the repair agent; : The concentration of pollutant type i; : Weight coefficient of pollutant category i.

[0027] 4. Precision repair module Negative pressure extraction technology: removes volatile pollutants (VOCs), with an extraction rate of no less than 85%, and prevents secondary pollution through a gas purification system; High-pressure injection technology: automatic positioning through the robot arm, dynamic adjustment of injection angle and pressure: ;in: : injection pressure; : Pressure adjustment coefficient; : soil viscosity coefficient; : Injection radius.

[0028] 5. Intelligent feedback and optimization module Monitor the repair process in real time and dynamically adjust the repair path through closed-loop optimization; Optimize repair efficiency based on the following energy consumption model: ; in: : Device power consumption; : Cost of repair agent.

[0029] A soil pollution control method, comprising: S1: Use the multi-dimensional dynamic monitoring module to collect soil data, including pollutant concentration, temperature and humidity; S2: Calculate the pollution diffusion trend based on the data analysis and trend prediction module, using the following model: ; Where D is the diffusion coefficient, k is the attenuation coefficient, and S is the input intensity of the pollution source; S3: Use the repair agent intelligent control module to dynamically adjust the repair agent formula according to the pollution type; S4: Use the precision remediation module to remediate contaminated soil.

[0030] Preferably, the repair agent control module supports the adjustment of the ratio of the composite repair agent, wherein: For petroleum hydrocarbon pollution, the remediation agent formula includes degrading bacterial liquid and diatomaceous earth; For heavy metal pollution, the remediation agent formula includes bentonite, potassium humate and chelating agent.

[0031] Preferably, an intelligent feedback and optimization module is used in the repair process to dynamically adjust the repair path based on the following energy consumption optimization model: ; in, is the total energy consumption; is the power consumption of the device; The cost of the repair agent.

[0032] Preferably, the method is applicable to complex pollution control, and the pollution types include: Soil pollution where petroleum hydrocarbons and heavy metals coexist; soil contamination where petroleum hydrocarbons coexist with other organic matter; Heavy metal compound pollution.

[0033] A soil pollution control application, the above system and method are applicable to the following scenarios: Pollution control of industrial sites; Management of agricultural chemical residues; Restoration of abandoned mine sites.

[0034] Example 1: Petroleum hydrocarbon pollution remediation Site Features: Polluted area: 100 m²; Pollution depth: 0-3 m; Petroleum hydrocarbon concentration: initial concentration is 5000 mg / kg; Soil characteristics: Sandy loam, medium permeability, pH 7.2; Source of pollution: industrial leak.

[0035] Repair target: Reduce the concentration of petroleum hydrocarbons to less than 200 mg / kg, in line with national standards.

[0036] Repair process: 1. Dynamic monitoring and analysis: Install a multidimensional sensor network, lay out a 10×10 grid, and sample at a depth of 0-3 m at each point; Through real-time data collection, it was found that the pollution diffusion was mainly concentrated in 0-2 m, and the diffusion rate to the southeast was 2 m / year.

[0037] 2. Restorative agent regulation: Repair agent formula: Degradation bacteria solution: Live bacteria concentration CFU / mL, usage 2.5 L / m³; Diatomaceous earth: Added at 1 kg / m³ to enhance adsorption capacity.

[0038] Restorative agent optimized formula: ; : The proportion of repair agent in petroleum hydrocarbon pollution; : weight coefficient; : Petroleum hydrocarbon concentration; : Concentration of other pollutants.

[0039] 3. Repair implementation: High-pressure injection: The injection equipment was controlled by a robot arm, with an injection depth of 2.5 m and an injection pressure of 3 MPa; Negative pressure extraction: extraction rate 90%, removal of volatile organic compounds (VOC).

[0040] Repair cycle: 20 days.

[0041] Repair results: After the repair, the petroleum hydrocarbon concentration dropped to 150 mg / kg; The soil pH value remains stable and no secondary pollution occurs; The repair efficiency reached 97%.

[0042] Example 2: Heavy metal pollution remediation Site Features: Contaminated area: 200 m²; Pollution depth: 0-6 m; Lead concentration: initial concentration was 120 mg / kg; Soil characteristics: clay soil, low permeability, pH 6.5; Source of pollution: leakage of mine wastewater.

[0043] Repair target: Reduce lead concentration to below 10 mg / kg, meeting ecological restoration standards.

[0044] Repair process: 1. Dynamic monitoring and analysis: Sampling depth stratification: 0-2 m, 2-4 m, 4-6 m; Through analysis, it was found that lead was mainly concentrated in the soil at a depth of 4-6 m, and the diffusion path was toward the north.

[0045] 2. Restorative agent regulation: Repair agent formula: Bentonite: usage 50%, mainly used for immobilizing heavy metals; Potassium humate: added at 5% to enhance repair activity; Chelating agent (EDTA): added at 3% to enhance the stability of heavy metals.

[0046] Ratio optimization formula: ; : The ratio of repair agent in lead pollution; : The weight of the i-th type of pollutant; : Concentration of pollutant of type i.

[0047] 3. Repair implementation: Negative pressure extraction: extracting groundwater containing heavy metals, with an extraction rate of 85%; High-pressure injection: injection depth 4.5 m, injection radius 2.5 m.

[0048] Repair cycle: 25 days.

[0049] Repair results: After remediation, lead concentration dropped to 8 mg / kg; The soil structure in the restoration area is stable, and no heavy metal migration was found; The repair efficiency reached 93%.

[0050] Example 3: Complex pollution remediation Site Features: Contaminated area: 300 m²; Pollution depth: 0-5 m; Petroleum hydrocarbon concentration: initial concentration was 2500 mg / kg; Cadmium concentration: initial concentration was 40 mg / kg; Soil characteristics: Sandy loam, strong permeability, pH value is 7.5; Source of pollution: industrial wastewater leakage.

[0051] Repair target: Reduce petroleum hydrocarbon concentrations to less than 100 mg / kg and cadmium concentrations to less than 5 mg / kg.

[0052] Repair process: 1. Dynamic monitoring and layered repair: Petroleum hydrocarbon pollution is concentrated in 0-2 m; Cadmium pollution is concentrated at 3-5 m.

[0053] 2. Restorative agent regulation: Petroleum hydrocarbon repair agent formula: degradation bacterial liquid 3 L / m³, diatomaceous earth 1 kg / m³; Cadmium repair agent formula: bentonite 50%, potassium humate 7%, chelating agent 2%.

[0054] 3. Repair implementation: Step 1: High-pressure injection to repair petroleum hydrocarbons, injection pressure 3 MPa, injection depth 2 m; Step 2: Layered injection to repair cadmium pollution, with an injection depth of 4.5 m.

[0055] Repair cycle: 45 days.

[0056] Repair results: The concentration of petroleum hydrocarbons dropped to 90 mg / kg; Cadmium concentration dropped to 4 mg / kg; The repair efficiencies were 96% and 92%, respectively.

[0057] A soil pollution control application, characterized in that the system and method are applicable to the following scenarios: Pollution control of industrial sites; Management of agricultural chemical residues; Restoration of abandoned mine sites.

[0058] It should be understood that the various forms of processes shown above can be used to reorder, add or delete steps. For example, the steps recorded in this disclosure can be executed in parallel, sequentially or in different orders, as long as the desired results of the technical solutions disclosed in this disclosure can be achieved, and this embodiment is not limited here.

[0059] It should be understood that the "system", "device", "unit" and / or "module" used in this embodiment is a method for distinguishing different components, elements, parts, parts or assemblies at different levels. However, if other words can achieve the same purpose, the words can be replaced by other expressions.

[0060] In this embodiment, a flow chart is used to illustrate the operations performed by the system according to the embodiment of the present embodiment. It should be understood that the preceding or following operations are not necessarily performed precisely in order. On the contrary, each step can be processed in reverse order or simultaneously. At the same time, other operations can also be added to these processes, or one or more operations can be removed from these processes.

[0061] As shown in this embodiment, unless the context clearly indicates an exception, the words "a", "an", "a kind" and / or "the" do not specifically refer to the singular, but may also include the plural. Generally speaking, the terms "include" and "comprise" only indicate that the steps and elements that have been clearly identified are included, and these steps and elements do not constitute an exclusive list, and the method or device may also include other steps or elements.

[0062] The definition of including in this embodiment, as used herein, the terms "having", "may have", "including", or "may include" indicate the existence of the corresponding functions, operations, elements, etc. of this embodiment, and do not limit the existence of one or more other functions, operations, elements, etc. In addition, it should be understood that the terms "including" or "having" as used herein indicate the existence of the features, numbers, steps, operations, elements, parts, or a combination thereof described in the specification, and do not exclude the existence or addition of one or more other features, numbers, steps, operations, elements, parts, or a combination thereof.

[0063] In the definition of and / or in this embodiment, the terms "A or B", "at least one of A and / or B" or "one or more of A and / or B" as used herein include any and all combinations of the words listed therewith. For example, "A or B", "at least one of A and / or B" or "one or more of A and / or B" means (1) including at least one A, (2) including at least one B, or (3) including both at least one A and at least one B.

[0064] The definitions of first and second in this embodiment, and the descriptions of first, second, etc. in this embodiment are only used for illustration and distinction of the described objects, and have no order, nor do they represent a special limitation on the number of devices in this embodiment, and cannot constitute any limitation on this embodiment. For example, a first element may be referred to as a second element without departing from the scope of this disclosure, and similarly, a second element may be referred to as a first element.

[0065] Although the specific embodiments of the present invention are described above, it should be understood by those skilled in the art that this is only for illustration and the protection scope of the present invention is defined by the appended claims. Those skilled in the art may make various changes or modifications to these embodiments without departing from the principles and essence of the present invention, but these changes and modifications all fall within the protection scope of the present invention.

Claims

1. A soil pollution control system, characterized in that: include: Multi-dimensional dynamic monitoring module, used to collect soil temperature, humidity, pH value, organic pollutant concentration and heavy metal concentration in real time; Data analysis and trend prediction module, based on pollution diffusion and reaction kinetics model, dynamically predicts pollution diffusion trend; The intelligent control module of the repair agent dynamically adjusts the type and ratio of the repair agent according to the pollution type and concentration; Precision remediation module, including negative pressure extraction technology and high pressure injection technology, to achieve the remediation of soil at different depths; Intelligent feedback and optimization module, used to monitor the repair process and adjust the repair strategy in real time.

2. The soil pollution control system according to claim 1, characterized in that: The data analysis and trend prediction module uses the following pollution trend prediction equation: ;in, Pollution trend at a certain moment; C: pollutant concentration; Diffusion gradient; R: external pollution input intensity; S: soil self-purification capacity; Dynamic weight coefficient.

3. The soil pollution control system according to claim 1, characterized in that: The repair agent ratio of the repair agent intelligent control module is dynamically calculated by the following formula: ;in, : The proportion of the i-th component of the repair agent; : The concentration of pollutant type i; : Weight coefficient of pollutant category i.

4. The soil pollution control system according to claim 1, characterized in that: The precise remediation module includes: a negative pressure extraction device for removing volatile organic compounds (VOCs) in the soil, with an extraction rate of not less than 85%.

5. The soil pollution control system according to claim 1, characterized in that: The precise repair module also includes: a high-pressure injection device, which is positioned by a robot arm to achieve dynamic adjustment of the injection pressure, and its calculation formula is: ;in, : injection pressure; : Pressure adjustment coefficient; : soil viscosity coefficient; : Injection radius.

6. A soil pollution control method, applied to the soil pollution control system according to any one of claims 1 to 5, characterized in that: include: S1: Use the multi-dimensional dynamic monitoring module to collect soil data, including pollutant concentration, temperature and humidity; S2: Calculate the pollution diffusion trend based on the data analysis and trend prediction module, using the following model: ; Where D is the diffusion coefficient, k is the attenuation coefficient, and S is the input intensity of the pollution source; S3: Use the repair agent intelligent control module to dynamically adjust the repair agent formula according to the pollution type; S4: Use the precision remediation module to remediate contaminated soil.

7. The soil pollution control method according to claim 6, characterized in that: The repair agent control module supports the adjustment of the ratio of the composite repair agent, wherein: For petroleum hydrocarbon pollution, the remediation agent formula includes degrading bacterial liquid and diatomaceous earth; For heavy metal pollution, the remediation agent formula includes bentonite, potassium humate and chelating agent.

8. The soil pollution control method according to claim 6, characterized in that: The intelligent feedback and optimization module is used in the repair process to dynamically adjust the repair path based on the following energy consumption optimization model: ;in, is the total energy consumption; is the power consumption of the device; The cost of the repair agent.

9. The soil pollution control method according to claim 6, characterized in that: The method is applicable to the treatment of complex pollution, including: Soil pollution where petroleum hydrocarbons and heavy metals coexist; soil contamination where petroleum hydrocarbons coexist with other organic matter; Heavy metal compound pollution.

10. A soil pollution control application, characterized in that: The system and method are applicable to the following scenarios: Pollution control of industrial sites; Management of agricultural chemical residues; Restoration of abandoned mine sites.

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