Soil ecological restoration system

Abstract

The invention relates to the technical field of soil remediation, and discloses a soil ecological remediation system which comprises a monitoring module, a pretreatment module, a remediation module, an electrochemical module, an improvement module and a vegetation module. The monitoring module is used for collecting soil pollutants and environmental data; the preprocessing module is used for processing soil by using a physical means and transmitting processed data; a composite microbial agent is injected into the remediation module to regulate the soil environment; the electrochemical module collects electric energy and treats pollutants; spraying a composite modifier in the later stage of the improvement module; the vegetation module constructs an artificial vegetation layer, and all the modules are electrically connected to achieve data interaction. Through cooperation of physical treatment, microbial remediation, electrochemical action, vegetation construction and other means, remediation and ecological function recovery of the contaminated soil are achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of soil remediation, and in particular to a soil ecological remediation system. Background Art

[0002] With the rapid development of industrialization and agricultural modernization, soil pollution is becoming increasingly serious. The infiltration of persistent organic pollutants (such as polychlorinated biphenyls (PCBs)) and heavy metals (such as copper and lead) from industries like electronic waste dismantling and the petrochemical industry into the soil, coupled with inappropriate agricultural fertilization and pesticide use, has damaged soil ecosystems, threatening crop safety and human health. The development of soil remediation technologies has become an urgent need in the environmental field.

[0003] Traditional microbial soil remediation systems have numerous limitations. Their degradation range is limited, resulting in poor treatment of complex mixed pollution and difficulty breaking down pollutants bound to soil humus. Their remediation depth is insufficient and significantly affected by soil permeability. Furthermore, microbial activity depends on environmental conditions, significantly decreasing in low temperatures, drought, and high salinity. Furthermore, exogenous degrading bacteria are susceptible to competitive inhibition by native bacteria, leading to lengthy remediation cycles, high project application costs, and inadequate monitoring and evaluation systems.

[0004] In view of this, it is necessary to develop a soil ecological remediation system to solve the problems of limited pollutant treatment capacity, poor environmental adaptability, low remediation efficiency, high cost and lack of effective monitoring and evaluation in existing technologies, so as to achieve efficient remediation of contaminated soil and reconstruction of ecological functions. Summary of the Invention

[0005] In view of this, the present invention proposes a soil ecological remediation system, which aims to solve the problems of limited pollutant treatment capacity, poor environmental adaptability, low remediation efficiency, high cost and lack of effective monitoring and evaluation in the existing technology, and realize the efficient remediation of contaminated soil and the reconstruction of ecological functions.

[0006] In one aspect, the present invention provides a soil ecological restoration system, comprising:

[0007] A monitoring module is used to arrange sampling points in the contaminated soil area and perform in-situ sampling operations on the sampling points to collect soil status information, wherein the soil status information includes the type and concentration of pollutants in the soil, soil permeability, soil nutrient element concentration, and soil temperature, humidity, pH, and redox potential data;

[0008] A pretreatment module is used to perform physical treatment on the soil and collect soil status information after the physical treatment; the physical treatment includes: destroying the combination of pollutants and soil humus, migrating deep-seated pollutants to the surface, and distributing remediation agents in soil pores;

[0009] The remediation module is used to inject composite functional microbial agents and add nutrients into the soil, and is also used to regulate soil moisture content and temperature;

[0010] An electrochemical module is used to collect the electrical energy generated by the metabolism of microorganisms in the soil after the repair module is repaired, and is also used to treat the organic matter and heavy metals in the repaired soil by using the action of electrodes and record the information of the organic matter content and heavy metals in the treated soil;

[0011] An improvement module is used to spray a composite amendment on the soil treated by the electrochemical module;

[0012] a vegetation module connected to the improvement module, the vegetation module being used to select plant species based on soil state information and soil type after improvement, and also being used to construct an artificial vegetation layer on the soil after spraying the composite amendment;

[0013] The monitoring module is also used to collect soil state information of the soil improved by the improvement module and determine the soil type, and transmit the soil state information of the improved soil and the soil type determination result to the vegetation module;

[0014] The pre-processing module is also used to transmit the pre-processed soil state information to the monitoring module and the repair module;

[0015] The electrochemical module is also used to transmit information about the organic matter content and heavy metals in the treated soil to the monitoring module and the improvement module.

[0016] Furthermore, the process of the pretreatment module performing physical treatment on the soil includes:

[0017] The pre-processing module adjusts the physical treatment intensity of the soil according to the soil permeability collected by the monitoring module and a preset soil permeability threshold;

[0018] When the soil permeability is lower than a preset soil permeability threshold, the pretreatment module increases the intensity of the physical treatment action on the soil;

[0019] When the soil permeability is higher than a preset soil permeability threshold, the pretreatment module reduces the intensity of the physical treatment action on the soil;

[0020] Among them, the preset soil permeability threshold is the critical value of soil permeability determined by conducting pollutant migration experiments on different types of soil samples.

[0021] Furthermore, the repair module is equipped with a heating device and a cooling device. The process of adjusting the soil moisture content and temperature by the repair module includes:

[0022] The repair module adjusts the soil temperature according to the soil temperature collected by the monitoring module and a preset soil temperature range;

[0023] When the soil temperature is lower than the preset soil temperature range, the repair module starts the heating device to increase the soil temperature;

[0024] When the soil temperature is higher than a preset soil temperature range, the repair module activates a cooling device to lower the soil temperature;

[0025] The preset soil temperature range is the boundary value of the temperature range suitable for microbial growth determined by experimental data on the relationship between soil microbial activity and temperature.

[0026] Furthermore, the repair module is also configured with an irrigation device and a drainage device. The process of adjusting the soil moisture content and temperature by the repair module also includes:

[0027] The repair module adjusts the soil moisture content according to the soil moisture content collected by the monitoring module and a preset soil moisture content range;

[0028] When the soil moisture content is lower than a preset soil moisture content range, the repair module increases the water supply to the soil through the irrigation device;

[0029] When the soil moisture content is higher than a preset soil moisture content range, the repair module reduces the amount of water in the soil through a drainage device;

[0030] The preset soil moisture range is the boundary value of the reasonable range of soil moisture determined according to different soil types and microbial growth requirements;

[0031] The different soil types include: sand, loam and clay.

[0032] Furthermore, the composite functional microbial agent includes strains that are resistant to extreme environments, strains that degrade specific pollutants, and strains that have the function of improving soil nutrients;

[0033] The extreme environment resistant strains are microbial strains isolated and screened from soil samples under a preset environment; the degrading strains for specific pollutants are microbial strains that are obtained through enrichment culture and screening and are capable of degrading target pollutants; the strains that have the function of improving soil nutrients are microbial strains isolated from soil and have the functions of solubilizing phosphate and fixing nitrogen;

[0034] The target pollutant is determined by the repair module based on the type of pollutant collected by the monitoring module.

[0035] Furthermore, the electrochemical module is configured with an electrode device. The electrochemical module utilizes the electrode action of the anode and cathode to treat the organic matter and heavy metals in the soil after the repair module is repaired and regulate the soil environment, including:

[0036] The electrochemical module adjusts the soil environment according to the soil redox potential data collected by the monitoring module and a preset potential range;

[0037] When the soil redox potential data is lower than a preset potential range, the electrochemical module increases the current output of the anode;

[0038] When the soil redox potential data is higher than a preset potential range, the electrochemical module reduces the current output of the anode;

[0039] The preset potential range is a boundary value of the potential range determined according to the redox conditions required for the degradation reaction of soil pollutants.

[0040] Furthermore, the nutrient agent is a slow-release nutrient agent, and the process of adding the nutrient agent to the soil by the repair module includes:

[0041] The repair module adjusts the rate of adding nutrients according to the nutrient element concentration in the soil collected by the monitoring module and the preset soil nutrient concentration range;

[0042] When the nutrient concentration in the soil is lower than the preset soil nutrient concentration range, the repair module accelerates the release rate of the slow-release nutrient agent;

[0043] When the nutrient concentration in the soil is higher than a preset soil nutrient concentration range, the repair module slows down the release rate of the slow-release nutrient;

[0044] The preset soil nutrient concentration range is a boundary value determined based on the concentration range of nutrient elements required for the growth and metabolism of soil microorganisms.

[0045] Furthermore, the composite amendment includes biochar and humic acid, and the improvement module uses a spraying device to spray the composite amendment on the soil treated by the electrochemical module, including:

[0046] The improvement module adjusts the ratio of biochar and humic acid according to the organic matter content of the repaired soil and a preset soil organic matter content threshold;

[0047] When the organic matter content of the repaired soil is lower than the preset soil organic matter content threshold, the improvement module increases the addition ratio of biochar and humic acid;

[0048] When the soil organic matter content is higher than a preset soil organic matter content threshold, the improvement module reduces the addition ratio of biochar and humic acid;

[0049] Among them, the preset soil organic matter content threshold is the soil fertility restoration target value determined based on the average organic matter content of uncontaminated soil.

[0050] Furthermore, the vegetation module is used to select plant varieties according to the soil state information and soil type of the improved soil, including:

[0051] The vegetation module selects plant species according to the pollutant type and soil type of the improved soil;

[0052] When heavy metal pollutants are present in the improved soil, the vegetation module selects plant species with heavy metal accumulation capabilities;

[0053] When the improved soil type is saline-alkali land, the vegetation module selects saline-alkali tolerant plant species.

[0054] Furthermore, the monitoring module, pretreatment module, repair module, electrochemical module, improvement module and vegetation module are electrically connected to each other;

[0055] The monitoring module is also used to preset a soil permeability threshold, a soil temperature range, a soil moisture range, a potential range, a soil nutrient concentration range, and a soil organic matter content threshold.

[0056] Compared with the prior art, the present invention has the following beneficial effects:

[0057] The present invention uses a monitoring module to collect multi-dimensional information such as soil pollutant type, content concentration, permeability, nutrient element concentration, temperature and humidity. Compared with traditional single or small number of indicator monitoring, it can more comprehensively grasp soil pollution and environmental conditions, and provide an accurate data basis for subsequent remediation.

[0058] The present invention combines the physical treatment of the pretreatment module, the microbial remediation of the remediation module, and the electrochemical reaction of the electrochemical module, changing the limitations of traditional single remediation methods. It can cope with complex pollution scenarios and achieve comprehensive treatment of deep-seated pollutant migration and multiple pollutants, such as organic matter and heavy metals.

[0059] A two-way data transmission mechanism is established between the modules of the present invention. The pre-processing module feeds back the processed information to the monitoring module and the repair module, and the electrochemical module transmits the processed data to the monitoring module and the improvement module, etc., so that the repair work in each link can be dynamically adjusted according to real-time data, forming an organic whole, thereby improving the repair efficiency and pertinence. In the existing technology, each link is relatively independent and lacks effective data linkage.

[0060] The present invention constructs a complete soil ecological restoration process from monitoring, pretreatment, remediation, electrochemical treatment to improvement and vegetation construction. It not only focuses on pollutant removal, but also attaches importance to the improvement of soil physical and chemical properties and ecosystem reconstruction. Compared with existing technologies that only focus on pollutant degradation, it is more conducive to the long-term recovery of soil ecological functions. BRIEF DESCRIPTION OF THE DRAWINGS

[0061] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiment below. The accompanying drawings are for illustration purposes only and are not to be considered as limiting the present invention. The same reference symbols are used throughout the drawings to represent the same components. In the drawings:

[0062] Figure 1 This is a functional block diagram of a soil ecological restoration system provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0063] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art. It should be noted that, unless there is a conflict, the embodiments of the present disclosure and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.

[0064] With the rapid development of industrialization and agricultural modernization, soil pollution is becoming increasingly serious. The infiltration of persistent organic pollutants (such as polychlorinated biphenyls (PCBs)) and heavy metals (such as copper and lead) from industries like electronic waste dismantling and the petrochemical industry into the soil, coupled with inappropriate agricultural fertilization and pesticide use, has damaged soil ecosystems, threatening crop safety and human health. The development of soil remediation technologies has become an urgent need in the environmental field.

[0065] Traditional microbial soil remediation systems have numerous limitations. Their degradation range is limited, resulting in poor treatment of complex mixed pollution and difficulty breaking down pollutants bound to soil humus. Their remediation depth is insufficient and significantly affected by soil permeability. Furthermore, microbial activity depends on environmental conditions, significantly decreasing in low temperatures, drought, and high salinity. Furthermore, exogenous degrading bacteria are susceptible to competitive inhibition by native bacteria, leading to lengthy remediation cycles, high project application costs, and inadequate monitoring and evaluation systems.

[0066] Therefore, a soil ecological remediation system is developed to solve the problems of limited pollutant treatment capacity, poor environmental adaptability, low remediation efficiency, high cost and lack of effective monitoring and evaluation in existing technologies, so as to achieve efficient remediation of contaminated soil and reconstruction of ecological functions.

[0067] Reference Figure 1 In some embodiments of the present application, a soil ecological restoration system includes:

[0068] The monitoring module is used to arrange sampling points in the contaminated soil area, perform in-situ sampling operations on the sampling points, collect soil status information, and provide a basis for subsequent remediation.

[0069] Specifically, soil status information includes the type and concentration of pollutants in the soil, soil permeability, nutrient element concentration in the soil, and soil temperature, humidity, pH, and redox potential data.

[0070] The pre-processing module is used to perform physical treatment on the soil and collect soil status information after physical treatment.

[0071] Specifically, physical treatment includes: destroying the combination of pollutants and soil humus, migrating deep pollutants to the surface, distributing remediation agents in the soil pores, and improving soil structure through physical treatment to facilitate subsequent remediation.

[0072] The remediation module is used to inject complex functional microbial agents and add nutrients into the soil. It is also used to regulate soil moisture content and temperature to create an environment suitable for microbial growth.

[0073] The electrochemical module is used to collect the electrical energy generated by the metabolism of microorganisms in the soil after repair by the repair module. It is also used to use the action of electrodes to treat the organic matter and heavy metals in the repaired soil and record the information of the organic matter content and heavy metals in the treated soil.

[0074] The improvement module is used to spray compound improvers on the soil treated by the electrochemical module to improve soil fertility.

[0075] The vegetation module is connected to the improvement module. The vegetation module is used to select plant varieties according to the soil status information and soil type of the improved soil. It is also used to construct an artificial vegetation layer on the soil after spraying the composite improver to consolidate the restoration effect.

[0076] Specifically, the monitoring module is also used to collect soil status information of the soil improved by the improvement module and determine the soil type, and transmit the soil status information of the improved soil and the soil type determination result to the vegetation module.

[0077] Specifically, the preprocessing module is also used to transmit the preprocessed soil status information to the monitoring module and the remediation module.

[0078] Specifically, the electrochemical module is also used to transmit information about the organic matter content and heavy metals in the treated soil to the monitoring module and the improvement module.

[0079] It can be understood that data between modules are interconnected to form a closed-loop repair process.

[0080] As can be seen, this invention forms a complete ecological restoration chain, from monitoring and pretreatment to remediation, improvement, and vegetation establishment, ensuring multi-dimensional treatment of contaminated soil. Real-time monitoring data guides the operation of each module, avoiding a "one-size-fits-all" approach to remediation, improving efficiency, and reducing costs. Combining microbial remediation, electrochemical technology, and revegetation reduces the use of chemical agents, achieving green and sustainable remediation.

[0081] Reference Figure 1 In some embodiments of the present application, the process of the pretreatment module implementing physical treatment on the soil includes: the pretreatment module adjusting the physical treatment intensity of the soil according to the soil permeability collected by the monitoring module and the preset soil permeability threshold.

[0082] Specifically, when the soil permeability is lower than the preset soil permeability threshold, the pretreatment module increases the intensity of the physical treatment effect on the soil; when the soil permeability is higher than the preset soil permeability threshold, the pretreatment module reduces the intensity of the physical treatment effect on the soil.

[0083] Among them, the preset soil permeability threshold is the critical value of soil permeability determined by conducting pollutant migration experiments on different types of soil samples.

[0084] It can be understood that the pretreatment module dynamically adjusts the physical treatment intensity according to the soil permeability. When the permeability is lower than the threshold, the treatment intensity is increased to promote the migration of pollutants and the diffusion of agents; when the permeability is higher than the threshold, the treatment intensity is reduced to avoid excessive disturbance of the soil structure.

[0085] As can be seen, the present invention precisely adjusts treatment intensity for different soil textures, such as clay with low permeability and sand with high permeability, improving pollutant exposure efficiency and reducing energy loss. This avoids excessive treatment that could lead to soil pore damage or nutrient loss, laying the foundation for subsequent microbial remediation.

[0086] Reference Figure 1 In some embodiments of the present application, the repair module is configured with a heating device and a cooling device.

[0087] Specifically, the process of the repair module adjusting the soil moisture content and temperature includes: the repair module adjusting the soil temperature according to the soil temperature collected by the monitoring module and a preset soil temperature range.

[0088] Specifically, when the soil temperature is lower than the preset soil temperature range, the repair module starts the heating device to increase the soil temperature; when the soil temperature is higher than the preset soil temperature range, the repair module starts the cooling device to lower the soil temperature.

[0089] The preset soil temperature range is the boundary value of the temperature range suitable for microbial growth determined by experimental data on the relationship between soil microbial activity and temperature.

[0090] It is understandable that the repair module adjusts the soil temperature through a heating device or a cooling device to maintain it within a preset range, starts heating when the temperature is too low, and starts cooling when the temperature is too high, to ensure that the metabolic activity of microorganisms is maximized.

[0091] As can be seen, the precise temperature control of the present invention can significantly increase the decomposition rate of pollutants. By adjusting the temperature to cope with different climatic conditions, the repair cycle is extended, ensuring efficient operation throughout the year.

[0092] Reference Figure 1 In some embodiments of the present application, the repair module is also configured with an irrigation device and a drainage device.

[0093] Specifically, the process of the repair module adjusting the soil moisture content and temperature also includes: the repair module adjusting the soil moisture content according to the soil moisture content collected by the monitoring module and a preset soil moisture content range.

[0094] Specifically, when the soil moisture content is lower than the preset soil moisture content range, the repair module increases the water supply to the soil through the irrigation device; when the soil moisture content is higher than the preset soil moisture content range, the repair module reduces the water content in the soil through the drainage device.

[0095] Among them, the preset soil moisture range is the boundary value of the reasonable range of soil moisture content determined according to different soil types and microbial growth requirements.

[0096] Specifically, the different soil types include: sand, loam, and clay.

[0097] It can be understood that the repair module combines irrigation and drainage devices to adjust soil moisture content, sets the moisture content range according to different soil types and microbial requirements, irrigates when the moisture content is too low, and drains when it is too high to avoid water accumulation leading to an anaerobic environment or drought that inhibits microbial activity.

[0098] It can be seen that this application adopts differentiated regulation based on the characteristics of poor water retention of sandy soil and poor drainage of clay, thereby improving the universality of the restoration system.

[0099] Reference Figure 1In some embodiments of the present application, the composite functional microbial agent includes strains that are resistant to extreme environments, strains that degrade specific pollutants, and strains that have the function of improving soil nutrients.

[0100] Specifically, strains resistant to extreme environments are microbial strains isolated and screened from soil samples under preset environments; strains that degrade specific pollutants are microbial strains that can degrade target pollutants obtained through enrichment culture and screening; strains with the function of improving soil nutrients are microbial strains isolated from the soil and have the functions of solubilizing phosphate and fixing nitrogen.

[0101] Specifically, the target pollutants are determined by the remediation module based on the types of pollutants collected by the monitoring module, such as petroleum hydrocarbons and heavy metals.

[0102] Specifically, soil samples from pre-defined environments are those with extreme environmental characteristics, including but not limited to: highly polluted environments, such as soils with significantly excessive concentrations of heavy metals, such as cadmium and lead, persistent organic pollutants, such as polycyclic aromatic hydrocarbons, and high levels of pesticide residues; extreme physical and chemical properties, such as extreme pH (strongly acidic, pH < 4), or strongly alkaline, pH > 9; high salinity (high salinity, such as soils with a salt content > 1%); extreme temperatures or droughts, such as prolonged high temperatures (e.g., temperatures ≥ 40°C); low temperatures (e.g., temperatures ≤ 5°C); and drought and water shortages, such as soils with a moisture content ≤ 20% of field capacity. Special stress environments include soils affected by pollution sources such as industrial waste and mine tailings.

[0103] It is understandable that the present invention can match exclusive degradation bacteria species to different pollutions, such as heavy metals and organic matter, to improve treatment efficiency.

[0104] Reference Figure 1 In some embodiments of the present application, the electrochemical module is configured with an electrode device.

[0105] Specifically, the electrochemical module uses the electrode action of the anode and cathode to process the organic matter and heavy metals in the soil after the repair module is repaired and adjust the soil environment, including: the electrochemical module adjusts the soil environment according to the soil redox potential data collected by the monitoring module and the preset potential range.

[0106] Specifically, when the soil redox potential data is lower than the preset potential range, the electrochemical module increases the current output of the anode; when the soil redox potential data is higher than the preset potential range, the electrochemical module reduces the current output of the anode.

[0107] The preset potential range is a boundary value of the potential range determined according to the redox conditions required for the degradation reaction of soil pollutants.

[0108] It can be understood that the electrochemical module regulates the soil redox potential through the electrode device, dynamically adjusts the anode current according to the preset potential range, increases the current when the potential is too low, and reduces the current when the potential is too high, to avoid excessive oxidation, thereby promoting the decomposition of organic matter and the solidification or activation of heavy metals.

[0109] It can be seen that the present invention enhances microbial metabolism through potential regulation, while directly treating pollutants to achieve "bio-electrochemical" combined synergy.

[0110] Reference Figure 1 In some embodiments of the present application, the nutrient agent is a slow-release nutrient agent, and the process of the repair module adding the nutrient agent to the soil includes: the repair module adjusts the nutrient addition rate according to the nutrient element concentration in the soil collected by the monitoring module and the preset soil nutrient concentration range.

[0111] Specifically, when the concentration of nutrient elements in the soil is lower than the preset soil nutrient concentration range, the repair module accelerates the release rate of the slow-release nutrient agent; when the concentration of nutrient elements in the soil is higher than the preset soil nutrient concentration range, the repair module slows down the release rate of the slow-release nutrient agent.

[0112] The preset soil nutrient concentration range is a boundary value determined based on the concentration range of nutrient elements required for the growth and metabolism of soil microorganisms.

[0113] It is understandable that the remediation module uses slow-release nutrients, which dynamically adjust the release rate according to the soil nutrient concentration, speeding up the release when nutrients are insufficient, such as increasing the nitrogen and phosphorus supply, and slowing down the release when nutrients are excessive, in order to maintain the nutrient balance required for microbial growth.

[0114] It can be seen that the present invention: the slow-release technology ensures the long-term effectiveness of the nutrient agent, adapts to the long cycle of microbial repair, avoids nutrient waste or imbalance caused by traditional one-time fertilization, and reduces the risk of groundwater pollution.

[0115] Reference Figure 1 In some embodiments of the present application, the composite modifier includes biochar and humic acid. The improvement module uses a spraying device to spray the composite modifier on the soil treated by the electrochemical module, including: the improvement module adjusts the ratio of biochar and humic acid according to the organic matter content of the repaired soil and the preset soil organic matter content threshold.

[0116] Specifically, when the organic matter content of the repaired soil is lower than the preset soil organic matter content threshold, the improvement module increases the addition ratio of biochar and humic acid; when the soil organic matter content is higher than the preset soil organic matter content threshold, the improvement module reduces the addition ratio of biochar and humic acid.

[0117] Among them, the preset soil organic matter content threshold is the soil fertility restoration target value determined based on the average organic matter content of uncontaminated soil.

[0118] Understandably, the improvement module adjusts the compound amendment ratio based on the organic matter content of the remediated soil. When the organic matter content is below the threshold, the addition ratio is increased to improve the soil's ability to retain water and fertilizer; when the organic matter content is too high, the ratio is reduced to avoid nutrient overload.

[0119] It can be seen that the present invention adjusts the ratio of the composite modifier as needed, avoids excessive use of the modifier, and reduces the repair cost.

[0120] Reference Figure 1 In some embodiments of the present application, the vegetation module is used to select plant varieties based on soil state information and soil type of the improved soil, including: the vegetation module selects plant varieties based on the pollutant type and soil type of the improved soil.

[0121] Specifically, when heavy metal pollutants exist in the improved soil, the vegetation module selects plant species with heavy metal enrichment capabilities; when the improved soil type is saline-alkali land, the vegetation module selects salt-alkali tolerant plant species.

[0122] It is understandable that the vegetation module selects plants based on the type of soil pollutants and soil type: enrichment plants such as hyperaccumulators are selected in heavy metal contaminated soils, and salt-tolerant plants such as Suaeda salsa are selected in saline-alkali lands to ensure plant survival and further purify the soil.

[0123] It can be seen that the present invention can avoid planting failures caused by improper plant selection and enhance the stability of the restored ecosystem.

[0124] Reference Figure 1 In some embodiments of the present application, the monitoring module, the pretreatment module, the repair module, the electrochemical module, the improvement module and the vegetation module are electrically connected to each other.

[0125] Specifically, the monitoring module is also used to preset soil permeability thresholds, soil temperature ranges, soil moisture ranges, potential ranges, soil nutrient concentration ranges, and soil organic matter content thresholds.

[0126] It is understood that the modules of the present invention communicate data through electrical connections, and the monitoring module presets various thresholds and ranges as a benchmark for automatic system control. Real-time data feedback automatically adjusts the operating parameters of each module, reducing manual intervention and improving repair efficiency and accuracy.

[0127] It can be seen that the present invention collects multi-dimensional information such as soil pollutant type, content concentration, permeability, nutrient element concentration, temperature and humidity through the monitoring module. Compared with traditional single or small number of indicator monitoring, it can more comprehensively grasp the soil pollution and environmental conditions, and provide an accurate data basis for subsequent remediation.

[0128] The present invention combines the physical treatment of the pretreatment module, the microbial remediation of the remediation module, and the electrochemical reaction of the electrochemical module, changing the limitations of traditional single remediation methods. It can cope with complex pollution scenarios and achieve comprehensive treatment of deep-seated pollutant migration and multiple pollutants, such as organic matter and heavy metals.

[0129] A two-way data transmission mechanism is established between the modules of the present invention. The pre-processing module feeds back the processed information to the monitoring module and the repair module, and the electrochemical module transmits the processed data to the monitoring module and the improvement module, etc., so that the repair work in each link can be dynamically adjusted according to real-time data, forming an organic whole, thereby improving the repair efficiency and pertinence. In the existing technology, each link is relatively independent and lacks effective data linkage.

[0130] The present invention constructs a complete soil ecological restoration process from monitoring, pretreatment, remediation, electrochemical treatment to improvement and vegetation construction. It not only focuses on pollutant removal, but also attaches importance to the improvement of soil physical and chemical properties and ecosystem reconstruction. Compared with existing technologies that only focus on pollutant degradation, it is more conducive to the long-term recovery of soil ecological functions.

[0131] Those skilled in the art will appreciate that the embodiments of the present application may be provided as methods, systems, or computer program products. Therefore, the present application may take the form of a complete hardware embodiment, a complete software embodiment, or a combination of software and hardware embodiments. Furthermore, the present application may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to magnetic disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0132] The present application is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems) and computer program products according to the embodiments of the present application. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of the processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 a process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0133] These computer program instructions may also be stored in a computer readable memory that can direct a computer or other programmable data processing device to work in a specific manner, so that the instructions stored in the computer readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 a process or multiple processes and / or boxes Figure 1 The function specified in one or more boxes.

[0134] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operational steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing the instructions executed on the computer or other programmable device for implementing the process. Figure 1 a process or multiple processes and / or boxes Figure 1 A step that specifies a function in one or more boxes.

[0135] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit it. Although the present invention has been described in detail with reference to the above embodiments, ordinary technicians in the field should understand that the specific implementation methods of the present invention can still be modified or replaced by equivalents. Any modification or equivalent replacement that does not depart from the spirit and scope of the present invention should be covered by the scope of protection of the claims of the present invention.

Claims

1. A soil ecological restoration system, characterized in that: include: A monitoring module is used to arrange sampling points in the contaminated soil area and perform in-situ sampling operations on the sampling points to collect soil status information, wherein the soil status information includes the type and concentration of pollutants in the soil, soil permeability, soil nutrient element concentration, and soil temperature, humidity, pH, and redox potential data; A pretreatment module is used to perform physical treatment on the soil and collect soil status information after the physical treatment; the physical treatment includes: destroying the combination of pollutants and soil humus, migrating deep-seated pollutants to the surface, and distributing remediation agents in soil pores; The remediation module is used to inject composite functional microbial agents and add nutrients into the soil, and is also used to regulate soil moisture content and temperature; An electrochemical module is used to collect the electrical energy generated by the metabolism of microorganisms in the soil after the repair module is repaired, and is also used to treat the organic matter and heavy metals in the repaired soil by using the action of electrodes and record the information of the organic matter content and heavy metals in the treated soil; An improvement module is used to spray a composite amendment on the soil treated by the electrochemical module; a vegetation module connected to the improvement module, the vegetation module being used to select plant species based on soil state information and soil type after improvement, and also being used to construct an artificial vegetation layer on the soil after spraying the composite amendment; The monitoring module is also used to collect soil state information of the soil improved by the improvement module and determine the soil type, and transmit the soil state information of the improved soil and the soil type determination result to the vegetation module; The pre-processing module is also used to transmit the pre-processed soil state information to the monitoring module and the repair module; The electrochemical module is also used to transmit information about the organic matter content and heavy metals in the treated soil to the monitoring module and the improvement module.

2. A soil ecological restoration system according to claim 1, characterized in that: The process of the pretreatment module performing physical treatment on the soil includes: The pre-processing module adjusts the physical treatment intensity of the soil according to the soil permeability collected by the monitoring module and a preset soil permeability threshold; When the soil permeability is lower than a preset soil permeability threshold, the pretreatment module increases the intensity of the physical treatment action on the soil; When the soil permeability is higher than a preset soil permeability threshold, the pretreatment module reduces the intensity of the physical treatment action on the soil; Among them, the preset soil permeability threshold is the critical value of soil permeability determined by conducting pollutant migration experiments on different types of soil samples.

3. A soil ecological restoration system according to claim 1, characterized in that: The repair module is equipped with a heating device and a cooling device. The process of adjusting the moisture content and temperature of the soil by the repair module includes: The repair module adjusts the soil temperature according to the soil temperature collected by the monitoring module and a preset soil temperature range; When the soil temperature is lower than the preset soil temperature range, the repair module starts the heating device to increase the soil temperature; When the soil temperature is higher than a preset soil temperature range, the repair module activates a cooling device to lower the soil temperature; The preset soil temperature range is the boundary value of the temperature range suitable for microbial growth determined by experimental data on the relationship between soil microbial activity and temperature.

4. A soil ecological restoration system according to claim 3, characterized in that: The repair module is also equipped with an irrigation device and a drainage device. The process of adjusting the soil moisture content and temperature by the repair module also includes: The repair module adjusts the soil moisture content according to the soil moisture content collected by the monitoring module and a preset soil moisture content range; When the soil moisture content is lower than a preset soil moisture content range, the repair module increases the water supply to the soil through the irrigation device; When the soil moisture content is higher than a preset soil moisture content range, the repair module reduces the amount of water in the soil through a drainage device; The preset soil moisture range is the boundary value of the reasonable range of soil moisture determined according to different soil types and microbial growth requirements; The different soil types include: sand, loam and clay.

5. A soil ecological restoration system according to claim 1, characterized in that: The composite functional microbial agent includes strains that are resistant to extreme environments, strains that degrade specific pollutants, and strains that have the function of improving soil nutrients; The extreme environment resistant strains are microbial strains isolated and screened from soil samples under a preset environment; the degrading strains for specific pollutants are microbial strains that are obtained through enrichment culture and screening and are capable of degrading target pollutants; the strains that have the function of improving soil nutrients are microbial strains isolated from soil and have the functions of solubilizing phosphate and fixing nitrogen; The target pollutant is determined by the repair module based on the type of pollutant collected by the monitoring module.

6. A soil ecological restoration system according to claim 1, characterized in that: The electrochemical module is equipped with an electrode device. The electrochemical module uses the electrode action of the anode and the cathode to treat the organic matter and heavy metals in the soil repaired by the repair module and regulate the soil environment. The process includes: The electrochemical module adjusts the soil environment according to the soil redox potential data collected by the monitoring module and a preset potential range; When the soil redox potential data is lower than a preset potential range, the electrochemical module increases the current output of the anode; When the soil redox potential data is higher than a preset potential range, the electrochemical module reduces the current output of the anode; The preset potential range is a boundary value of the potential range determined according to the redox conditions required for the degradation reaction of soil pollutants.

7. A soil ecological restoration system according to claim 5, characterized in that: The nutrient agent is a slow-release nutrient agent. The process of adding the nutrient agent to the soil by the repair module includes: The repair module adjusts the rate of adding nutrients according to the nutrient element concentration in the soil collected by the monitoring module and the preset soil nutrient concentration range; When the nutrient concentration in the soil is lower than the preset soil nutrient concentration range, the repair module accelerates the release rate of the slow-release nutrient agent; When the nutrient concentration in the soil is higher than a preset soil nutrient concentration range, the repair module slows down the release rate of the slow-release nutrient; The preset soil nutrient concentration range is a boundary value determined based on the concentration range of nutrient elements required for the growth and metabolism of soil microorganisms.

8. A soil ecological restoration system according to claim 7, characterized in that: The composite improver includes biochar and humic acid. The improvement module uses a spraying device to spray the composite improver on the soil treated by the electrochemical module, including: The improvement module adjusts the ratio of biochar and humic acid according to the organic matter content of the repaired soil and a preset soil organic matter content threshold; When the organic matter content of the repaired soil is lower than the preset soil organic matter content threshold, the improvement module increases the addition ratio of biochar and humic acid; When the soil organic matter content is higher than a preset soil organic matter content threshold, the improvement module reduces the addition ratio of biochar and humic acid; Among them, the preset soil organic matter content threshold is the soil fertility restoration target value determined based on the average organic matter content of uncontaminated soil.

9. A soil ecological restoration system according to claim 8, characterized in that: The vegetation module is used to select plant varieties according to the soil state information and soil type of the improved soil, including: The vegetation module selects plant species according to the pollutant type and soil type of the improved soil; When heavy metal pollutants are present in the improved soil, the vegetation module selects plant species with heavy metal accumulation capabilities; When the improved soil type is saline-alkali land, the vegetation module selects saline-alkali tolerant plant species.

10. A soil ecological restoration system according to claim 9, characterized in that: The monitoring module, pretreatment module, repair module, electrochemical module, improvement module and vegetation module are electrically connected to each other; The monitoring module is also used to preset a soil permeability threshold, a soil temperature range, a soil moisture range, a potential range, a soil nutrient concentration range, and a soil organic matter content threshold.

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