A soil ecological remediation system

Abstract

The present application 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 collects soil pollutants and environmental data; the pretreatment module processes soil by physical means and transmits processed data; the remediation module injects composite microbial inoculum and adjusts the soil environment; the electrochemical module collects electric energy and processes pollutants; the improvement module sprays composite improvement agent in the later period; and the vegetation module constructs an artificial vegetation layer. Each module is electrically connected to realize data interaction. The present application realizes the remediation of contaminated soil and the recovery of ecological functions through the synergistic cooperation of physical treatment, microbial remediation, electrochemical action and vegetation construction and the like.

Description

Technical Field

[0001] This invention relates to the field of soil remediation technology, and more specifically, to a soil ecological restoration system. Background Technology

[0002] With the rapid development of industrialization and agricultural modernization, soil pollution has become an increasingly serious problem. Persistent organic pollutants (such as polychlorinated biphenyls, PCBs) and heavy metals (copper, lead, etc.) generated by industries such as electronic waste dismantling and petrochemicals seep into the soil in large quantities. Coupled with unreasonable agricultural fertilization and pesticide use, this has led to the destruction of the soil ecosystem, threatening the safety of crops and human health. The development of soil remediation technology has become an urgent need in the environmental field.

[0003] Traditional microbial soil remediation systems have many limitations. Their degradation range is limited, their effectiveness in treating complex mixed pollution is poor, and they struggle to decompose pollutants bound to soil humus. Furthermore, their remediation depth is insufficient and greatly affected by soil permeability. In addition, microbial activity is dependent on environmental conditions; their effectiveness is significantly reduced in low-temperature, drought, and high-salt environments. Exogenous degrading bacteria are also easily inhibited by competition from native bacteria. The remediation cycle is lengthy, engineering application costs are high, and monitoring and evaluation systems are inadequate.

[0004] Therefore, it is necessary to develop a soil ecological restoration system to address the problems of limited pollutant treatment capacity, poor environmental adaptability, low remediation efficiency, high cost, and lack of effective monitoring and assessment in existing technologies, so as to achieve efficient remediation of polluted soil and reconstruction of its ecological functions. Summary of the Invention

[0005] In view of this, the present invention proposes a soil ecological restoration 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, so as to achieve efficient remediation and ecological function reconstruction of polluted soil.

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

[0007] The monitoring module is used to set up sampling points in the contaminated soil area and perform in-situ sampling operations at the sampling points to collect soil condition information, including the type and concentration of pollutants in the soil, soil permeability, concentration of nutrients in the soil, and soil temperature, humidity, pH and redox potential data.

[0008] The pretreatment module is used to physically treat the soil and collect the soil state information after physical treatment; the physical treatment includes: breaking the combination of pollutants and soil humus, migrating deep pollutants to the surface, and distributing remediation agents in the soil pores;

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

[0010] The electrochemical module is used to collect electrical energy generated by the metabolism of microorganisms in the soil after remediation by the remediation module. It is also used to treat the organic matter and heavy metals in the remediated soil using electrode action and record the information on the organic matter content and heavy metals in the treated soil.

[0011] The improvement module is used to spray a compound amendment onto the soil after it has been treated by the electrochemical module.

[0012] A vegetation module is connected to the improvement module. The vegetation module is used to select plant varieties based on the soil state information and soil type of the improved soil, and is also used to construct an artificial vegetation layer on the soil after spraying the compound amendment.

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

[0014] The preprocessing module is also used to transmit the preprocessed soil condition information to the monitoring module and the remediation module;

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

[0016] Furthermore, the pretreatment module performs physical treatment on the soil, including:

[0017] The preprocessing module adjusts the intensity of physical treatment on the soil based on the soil permeability collected by the monitoring module and the preset soil permeability threshold.

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

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

[0020] The preset soil permeability threshold is a critical value for soil permeability determined by conducting pollutant migration experiments on different types of soil samples.

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

[0022] The repair module adjusts the soil temperature based on the soil temperature collected by the monitoring module and the preset soil temperature range.

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

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

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

[0026] Furthermore, the remediation module is also equipped with an irrigation device and a drainage device, and the process of the remediation module regulating soil moisture content and temperature further includes:

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

[0028] 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 an irrigation device;

[0029] When the soil moisture content is higher than the 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 content range is the boundary value of the reasonable range of soil moisture content determined according to different soil types and microbial growth requirements.

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

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

[0033] The strains resistant to extreme environments are microbial strains isolated and screened from soil samples under preset conditions; the strains that degrade specific pollutants are microbial strains that can degrade target pollutants, obtained through enrichment culture and screening; the strains that improve soil nutrients are microbial strains with phosphorus solubilization and nitrogen fixation functions isolated from soil.

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

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

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

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

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

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

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

[0041] The repair module adjusts the nutrient addition rate based on the nutrient concentration in the soil collected by the monitoring module and the preset soil nutrient concentration range.

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

[0043] When the concentration of nutrients in the soil is higher than the preset range of soil nutrient concentration, the remediation module slows down the release rate of the slow-release nutrient agent.

[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 soil conditioner includes biochar and humic acid, and the process of applying the composite soil conditioner to the soil treated by the electrochemical module using a spraying device includes:

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

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

[0048] 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.

[0049] The preset threshold for soil organic matter content is a soil fertility restoration target value determined based on the average organic matter content of uncontaminated soil.

[0050] Furthermore, the vegetation module is used for the process of selecting plant varieties based on the soil state information and soil type of the improved soil, including:

[0051] The vegetation module selects plant species based on the type of pollutants 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 the ability to accumulate heavy metals.

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

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

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

[0056] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0057] This invention collects multi-dimensional information such as soil pollutant type, content concentration, permeability, nutrient element concentration, temperature and humidity through a monitoring module. Compared with traditional single or limited indicator monitoring, it can more comprehensively grasp the soil pollution and environmental conditions, providing a precise data foundation for subsequent remediation.

[0058] This invention combines the physical treatment of the pretreatment module, the microbial remediation of the remediation module, and the electrochemical reaction of the electrochemical module, thus overcoming 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] The present invention establishes a two-way data transmission mechanism between the modules. The preprocessing 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 of each link can be dynamically adjusted according to real-time data, forming an organic whole, improving the repair efficiency and targeting. In contrast, the existing technology has relatively independent links and lacks effective data linkage.

[0060] This invention constructs a complete soil ecological restoration process, from monitoring, pretreatment, remediation, and electrochemical treatment to improvement and vegetation construction. It not only focuses on pollutant removal but also emphasizes the improvement of soil physicochemical properties and ecosystem reconstruction. Compared with existing technologies that only focus on pollutant degradation, it is more conducive to the long-term restoration of soil ecological functions. Attached Figure Description

[0061] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the invention. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0062] Figure 1 This is a functional block diagram of a soil ecological restoration system provided in an embodiment of the present invention. Detailed Implementation

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

[0064] With the rapid development of industrialization and agricultural modernization, soil pollution has become an increasingly serious problem. Persistent organic pollutants (such as polychlorinated biphenyls, PCBs) and heavy metals (copper, lead, etc.) generated by industries such as electronic waste dismantling and petrochemicals seep into the soil in large quantities. Coupled with unreasonable agricultural fertilization and pesticide use, this has led to the destruction of the soil ecosystem, threatening the safety of crops and human health. The development of soil remediation technology has become an urgent need in the environmental field.

[0065] Traditional microbial soil remediation systems have many limitations. Their degradation range is limited, their effectiveness in treating complex mixed pollution is poor, and they struggle to decompose pollutants bound to soil humus. Furthermore, their remediation depth is insufficient and greatly affected by soil permeability. In addition, microbial activity is dependent on environmental conditions; their effectiveness is significantly reduced in low-temperature, drought, and high-salt environments. Exogenous degrading bacteria are also easily inhibited by competition from native bacteria. The remediation cycle is lengthy, engineering application costs are high, and monitoring and evaluation systems are inadequate.

[0066] Therefore, it is necessary to develop a soil ecological restoration system to address the problems of limited pollutant treatment capacity, poor environmental adaptability, low remediation efficiency, high cost, and lack of effective monitoring and assessment in existing technologies, so as to achieve efficient remediation and ecological function reconstruction of polluted soil.

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

[0068] The monitoring module is used to set up sampling points in the contaminated soil area and perform in-situ sampling operations at the sampling points to collect soil condition information, providing a basis for subsequent remediation.

[0069] Specifically, soil condition information includes the type and concentration of pollutants in the soil, soil permeability, concentration of nutrients in the soil, and data on soil temperature, humidity, pH and redox potential.

[0070] The preprocessing module is used to physically treat the soil and collect soil condition information after physical treatment.

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

[0072] The repair module is used to inject compound functional microbial agents and add nutrients into the soil, and also to regulate soil moisture content and temperature to create a suitable environment for microbial growth.

[0073] The electrochemical module is used to collect electrical energy generated by the metabolism of microorganisms in the soil after remediation by the remediation module. It is also used to treat organic matter and heavy metals in the remediated soil using electrode action and record the information on the content of organic matter and heavy metals in the treated soil.

[0074] The improvement module is used to spray a compound amendment onto the soil after it has been treated by the electrochemical module, so as to improve soil fertility.

[0075] The vegetation module, connected to the improvement module, is used to select plant varieties based on the soil condition information and soil type of the improved soil. It is also used to construct an artificial vegetation layer on the soil after spraying the compound amendment to consolidate the restoration effect.

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

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

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

[0079] Understandably, data is exchanged between modules 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 reconstruction, ensuring multi-dimensional governance of contaminated soil. Real-time monitoring data guides the operation of each module, avoiding a "one-size-fits-all" approach to remediation, thus improving efficiency and reducing costs. By combining microbial remediation, electrochemical technology, and vegetation reconstruction, the use of chemical agents is reduced, achieving green and sustainable remediation.

[0081] Reference Figure 1 In some embodiments of this application, the process of the pretreatment module physically treating the soil includes: the pretreatment module adjusting the intensity of the physical treatment on the soil based on the soil permeability collected by the monitoring module and a 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 physical treatment on the soil; when the soil permeability is higher than the preset soil permeability threshold, the pretreatment module reduces the intensity of physical treatment on the soil.

[0083] The preset soil permeability threshold is a critical value for soil permeability determined by conducting pollutant migration experiments on different types of soil samples.

[0084] Understandably, the pretreatment module dynamically adjusts the physical treatment intensity based on soil permeability. When the permeability is below the threshold, the treatment intensity is increased to promote pollutant migration and reagent diffusion; when the permeability is above the threshold, the treatment intensity is reduced to avoid excessive disturbance to the soil structure.

[0085] As can be seen, this invention precisely adjusts the treatment intensity for different soil textures, such as clay with low permeability and sandy soil with high permeability, thereby improving pollutant exposure efficiency and reducing energy loss. It avoids overtreatment that could damage soil porosity or cause nutrient loss, laying the foundation for subsequent microbial remediation.

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

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

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

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

[0090] Understandably, the repair module regulates the soil temperature through heating or cooling devices to maintain it within a preset range, activating heating when the temperature is too low and cooling when the temperature is too high, thus maximizing the metabolic activity of microorganisms.

[0091] As can be seen, the precise temperature control of this invention can significantly improve 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 this application, the repair module is also configured with an irrigation device and a drainage device.

[0093] Specifically, the process of the repair module adjusting 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 the 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 amount of water in the soil through the drainage device.

[0095] The preset soil moisture content 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, different soil types include: sandy soil, loam, and clay.

[0097] Understandably, the repair module combines irrigation and drainage devices to regulate soil moisture content. It sets the moisture content range according to different soil types and microbial needs, irrigating when the moisture content is too low and draining when it is too high, to avoid water accumulation leading to an anaerobic environment or drought inhibiting microbial activity.

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

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

[0100] Specifically, strains resistant to extreme environments are microbial strains isolated and screened from soil samples under preset conditions; strains that degrade specific pollutants are microbial strains that can degrade target pollutants, obtained through enrichment culture and screening; and strains that improve soil nutrients are microbial strains isolated from soil that have phosphorus solubilization and nitrogen fixation functions.

[0101] Specifically, the target pollutant is determined by the remediation module based on the pollutant type collected by the monitoring module, such as petroleum hydrocarbons and heavy metals.

[0102] Specifically, the soil samples under the pre-defined environment are soil samples 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 soils with high pesticide residues. Extreme physicochemical properties: Extreme pH: strongly acidic soils (pH < 4) or strongly alkaline soils (pH > 9); High salinity: soils with high salinity (salt content > 1%); Extreme temperature or drought environments: prolonged high temperatures (≥ 40℃); low temperatures (≤ 5℃); drought and water scarcity (soil moisture content ≤ 20% of field capacity). Special stress environments: soils affected by special pollution sources such as industrial waste and mine tailings.

[0103] It is understood that this invention can match specific degrading bacteria strains to different types of pollution, such as heavy metals and organic matter, thereby improving treatment efficiency.

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

[0105] Specifically, the electrochemical module uses the electrode action of the anode and cathode to treat organic matter and heavy metals in the soil after remediation by the remediation module and regulate the soil environment. This includes: the electrochemical module regulating the soil environment based on 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 decreases the current output of the anode.

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

[0108] Understandably, the electrochemical module regulates the soil redox potential through the electrode device and dynamically adjusts the anode current according to the preset potential range. When the potential is too low, the current is increased, and when it is too high, the current is reduced to avoid excessive oxidation, thereby promoting the decomposition of organic matter and the solidification or activation of heavy metals.

[0109] As can be seen, this invention enhances microbial metabolism through potential regulation while directly treating pollutants, achieving a combined "bio-electrochemical" synergistic effect.

[0110] Reference Figure 1 In some embodiments of this application, the nutrient is a slow-release nutrient. The process of the remediation module adding the nutrient to the soil includes: the remediation module adjusting the nutrient addition rate according to the concentration of nutrient elements in the soil collected by the monitoring module and a preset range of soil nutrient concentration.

[0111] Specifically, when the concentration of nutrients in the soil is lower than the preset range, the remediation module accelerates the release rate of the slow-release nutrient agent; when the concentration of nutrients in the soil is higher than the preset range, the remediation 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] Understandably, the remediation module uses slow-release nutrients, dynamically adjusting the release rate according to the soil nutrient concentration. It accelerates release when nutrients are insufficient, such as by increasing nitrogen and phosphorus supply, and slows release when nutrients are excessive, in order to maintain the nutrient balance required for microbial growth.

[0114] As can be seen, the slow-release technology of this invention ensures the long-term effectiveness of the nutrient, adapts to the characteristics of long microbial repair cycles, 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 this application, the composite amendment includes biochar and humic acid. The process of the amendment module spraying the composite amendment onto the soil treated by the electrochemical module using a spraying device includes: the amendment module adjusting the ratio of biochar and humic acid according to the organic matter content of the remediated soil and a preset soil organic matter content threshold.

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

[0117] The preset threshold for soil organic matter content is a soil fertility restoration target value determined based on the average organic matter content of uncontaminated soil.

[0118] Understandably, the improvement module adjusts the ratio of the compound amendment based on the organic matter content of the soil after remediation. When organic matter is below a threshold, the proportion is increased to enhance the soil's water and fertilizer retention capacity; when organic matter is too high, the proportion is reduced to avoid nutrient excess.

[0119] As can be seen, the present invention adjusts the ratio of the composite modifier as needed, avoiding excessive use of the modifier and reducing repair costs.

[0120] Reference Figure 1 In some embodiments of this application, the vegetation module is used to select plant varieties based on the 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 are present in the improved soil, the vegetation module selects plant species with the ability to accumulate heavy metals; when the improved soil type is saline-alkali land, the vegetation module selects plant species that are tolerant to salt and alkali.

[0122] Understandably, the vegetation module selects plants based on the type of soil pollutants and soil type: in heavy metal contaminated soil, enriching plants, such as hyperaccumulating plants, are selected, and in saline-alkali soil, salt-tolerant plants, such as Suaeda salsa, are selected 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 this application, the monitoring module, pretreatment module, repair module, electrochemical module, improvement module, and vegetation module are electrically connected to each other.

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

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

[0127] As can be seen, this invention collects multi-dimensional information such as soil pollutant type, content concentration, permeability, nutrient element concentration, temperature and humidity through a monitoring module. Compared with traditional single or few indicator monitoring, it can more comprehensively grasp the soil pollution and environmental conditions, providing a precise data foundation for subsequent remediation.

[0128] This invention combines the physical treatment of the pretreatment module, the microbial remediation of the remediation module, and the electrochemical reaction of the electrochemical module, thus overcoming 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] The present invention establishes a two-way data transmission mechanism between the modules. The preprocessing 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 of each link can be dynamically adjusted according to real-time data, forming an organic whole, improving the repair efficiency and targeting. In contrast, the existing technology has relatively independent links and lacks effective data linkage.

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

[0131] Those skilled in the art will understand that embodiments of this application can be provided as methods, systems, or computer program goods. Therefore, this application can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, this application can take the form of a computer program goods embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0132] This application is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program goods according to embodiments of this application. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the flowchart... Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0133] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0134] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified 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, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the specific implementation of the present invention. Any modifications or equivalent substitutions that do not depart from the spirit and scope of the present invention should be covered within the scope of protection of the claims of the present invention.

Claims

1. A soil ecological restoration system, characterized in that, include: The monitoring module is used to set up sampling points in the contaminated soil area and perform in-situ sampling operations at the sampling points to collect soil condition information, including the type and concentration of pollutants in the soil, soil permeability, concentration of nutrients in the soil, and soil temperature, humidity, pH and redox potential data. The pretreatment module is used to physically treat the soil and collect the soil state information after physical treatment; the physical treatment includes: breaking the combination of pollutants and soil humus, migrating deep pollutants to the surface, and distributing remediation agents in the soil pores; The repair module is used to inject compound functional microbial agents and add nutrients into the soil, and also to regulate soil moisture content and temperature; The electrochemical module is used to collect electrical energy generated by the metabolism of microorganisms in the soil after remediation by the remediation module. It is also used to treat the organic matter and heavy metals in the remediated soil using electrode action and record the information on the organic matter content and heavy metals in the treated soil. The improvement module is used to spray a compound amendment onto the soil after it has been treated by the electrochemical module. A vegetation module is connected to the improvement module. The vegetation module is used to select plant varieties based on the soil state information and soil type of the improved soil, and is also used to construct an artificial vegetation layer on the soil after spraying the compound amendment. The monitoring module is also used to collect soil state information of the soil after improvement by the improvement module and determine the soil type, and transmit the soil state information and soil type determination results of the improved soil to the vegetation module. The pretreatment module is also used to transmit the pretreated soil condition information to the monitoring module and the remediation module. The process of the pretreatment module performing physical treatment on the soil includes: The preprocessing module adjusts the intensity of physical treatment on the soil based on the soil permeability collected by the monitoring module and the preset soil permeability threshold. When the soil permeability is lower than the preset soil permeability threshold, the pretreatment module increases the intensity of the physical treatment of the soil. When the soil permeability is higher than the preset soil permeability threshold, the pretreatment module reduces the intensity of the physical treatment on the soil. Among them, the preset soil permeability threshold is a critical value of soil permeability determined by conducting pollutant migration experiments on different types of soil samples. The electrochemical module is also used to transmit information on the organic matter content and heavy metals in the treated soil to the monitoring module and the improvement module.

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

3. The soil ecological restoration system according to claim 2, characterized in that, The remediation module is also equipped with irrigation and drainage devices, and the process of regulating soil moisture content and temperature by the remediation module further includes: The repair module adjusts the soil moisture content according to the soil moisture content collected by the monitoring module and the preset soil moisture content range; 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 an irrigation device; When the soil moisture content is higher than the preset soil moisture content range, the repair module reduces the amount of water in the soil through a drainage device; The preset soil moisture content range is the boundary value of the reasonable range of soil moisture content determined according to different soil types and microbial growth requirements. The different soil types include: sandy soil, loam, and clay.

4. The soil ecological restoration system according to claim 1, characterized in that, The composite functional microbial agent includes strains resistant to extreme environments, strains that degrade specific pollutants, and strains that improve soil nutrients. The strains resistant to extreme environments are microbial strains isolated and screened from soil samples under preset conditions; the strains that degrade specific pollutants are microbial strains that can degrade target pollutants, obtained through enrichment culture and screening; the strains that improve soil nutrients are microbial strains with phosphorus solubilization and nitrogen fixation functions isolated from soil. The target pollutant is determined by the remediation module based on the pollutant type collected by the monitoring module.

5. A soil ecological restoration system according to claim 1, characterized in that, The electrochemical module is equipped with an electrode device. The electrochemical module utilizes the electrode action of the anode and cathode to treat organic matter and heavy metals in the soil after remediation and to regulate the soil environment, including: The electrochemical module adjusts the soil environment based on the soil redox potential data collected by the monitoring module and the preset potential range; 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; The preset potential range is a potential range boundary value determined based on the redox conditions required for the degradation reaction of soil pollutants.

6. A soil ecological restoration system according to claim 4, characterized in that, The nutrient is a slow-release nutrient, and the process of adding the nutrient to the soil by the remediation module includes: The repair module adjusts the nutrient addition rate based on the nutrient concentration in the soil collected by the monitoring module and the preset soil nutrient concentration range. When the concentration of nutrients in the soil is lower than the preset range of soil nutrient concentration, the remediation module accelerates the release rate of the slow-release nutrient agent. When the concentration of nutrients in the soil is higher than the preset range of soil nutrient concentration, the remediation module slows down the release rate of the slow-release nutrient agent. 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.

7. A soil ecological restoration system according to claim 6, characterized in that, The composite soil conditioner includes biochar and humic acid. The process of applying the composite soil conditioner to the soil treated by the electrochemical module using a spraying device includes: The improvement module adjusts the ratio of biochar and humic acid according to the organic matter content of the remediated soil and the preset soil organic matter content threshold. When the organic matter content of the remediated soil is lower than the preset threshold for soil organic matter content, 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. The preset threshold for soil organic matter content is a soil fertility restoration target value determined based on the average organic matter content of uncontaminated soil.

8. A soil ecological restoration system according to claim 7, characterized in that, The vegetation module is used for the process of selecting plant varieties based on the soil condition information and soil type of the improved soil, including: The vegetation module selects plant species based on the type of pollutants and soil type of the improved soil. When heavy metal pollutants are present in the improved soil, the vegetation module selects plant species with the ability to accumulate heavy metals. When the improved soil type is saline-alkali land, the vegetation module selects salt-tolerant plant species.

9. A soil ecological restoration system according to claim 8, characterized in that, The monitoring module, pretreatment module, remediation module, electrochemical module, improvement module, and vegetation module are electrically connected to each other. The monitoring module is also used to preset soil permeability threshold, soil temperature range, soil moisture content range, potential range, soil nutrient concentration range, and soil organic matter content threshold.

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