A highly efficient method and device for remediating organic contaminated soil

Abstract

The present application provides a highly efficient method and device for remediating organic contaminated soil. The present application first determines an initial remediation potential difference based on soil parameters; then applies the initial remediation potential difference through a remediation electrode to remediate the organic contaminated soil; and determines the pollution enrichment coefficient in the soil remediation process according to each remediation current and its corresponding remediation coordinates. When the pollution enrichment coefficient is higher than a preset threshold, the contaminated soil is located according to the current intensity and remediation coordinates corresponding to the remediation current, and the enrichment area of ​​the organic contaminated soil is determined; the remediation potential difference is determined according to the pollution enrichment coefficient and the current density of the enrichment area, and the remediation potential difference is applied to the enrichment area of ​​the organic contaminated soil through a second remediation electrode to complete the soil remediation of the enrichment area, so that the enrichment area of ​​the pollutant can be detected and remediated during the remediation process of the organic contaminated soil, thereby improving the remediation efficiency of the organic contaminated soil.

Description

Technical Field

[0001] The present application relates to the technical field of organic contaminated soil remediation, and more specifically, to a highly efficient organic contaminated soil remediation method and device. Background Art

[0002] Organic pollutants in the soil include pesticides, phenols, cyanide and polycyclic aromatic hydrocarbons. Due to the toxicity, mutagenicity, teratogenicity and carcinogenicity associated with pollutants, their presence affects all life forms. The development background and current status of soil remediation technology show that since the 1980s, many countries have formulated plans for the management and remediation of contaminated soil, which has promoted the development of the soil remediation industry.

[0003] Soil remediation is a technical measure to restore the normal function of contaminated soil. Among them, electrodynamic remediation technology is a physical remediation measure that can enrich heavy metal pollutants in the electrode area through the combined effects of electrodialysis, electromigration, electrophoresis, etc., and carry out centralized treatment or separation. It has the advantages of low cost, high treatment efficiency, strong controllability, and friendliness to the natural environment. However, in the electrodynamic remediation process, the distribution of pollutants in the soil is uneven, especially the enrichment of pollutants in the presence of organic pollution sources, which will lead to uneven soil conductivity, making it difficult to completely remove organic pollutants in the enriched area, and the soil remediation efficiency is very low. Summary of the invention

[0004] The present application provides a highly efficient method and device for remediating organic contaminated soil, which can detect and remediate pollutant-enriched areas during the remediation process of organic contaminated soil, thereby improving the remediation efficiency of organic contaminated soil.

[0005] In a first aspect, the present application provides a highly efficient method for remediating organically contaminated soil. The method may be executed by a network device, or may be executed by a chip configured in the network device, and the present application does not limit this.

[0006] Specifically, the method includes:

[0007] After pre-treating the organic contaminated soil, obtaining soil parameters of the organic contaminated soil, and determining an initial remediation potential difference based on the soil parameters;

[0008] Remediation of organic contaminated soil is performed by applying an initial remediation potential difference through a remediation electrode, and remediation current is collected from the remediation area of ​​the organic contaminated soil based on a current detection array to obtain a plurality of remediation currents and their corresponding remediation coordinates;

[0009] Determine the pollution enrichment coefficient in the soil remediation process according to each remediation current and its corresponding remediation coordinates. When the pollution enrichment coefficient is higher than a preset threshold, locate the contaminated soil according to the current intensity and remediation coordinates corresponding to the remediation current to determine the enrichment area of ​​the organic contaminated soil;

[0010] The remediation potential difference is determined according to the pollution enrichment coefficient and the current density of the enrichment area, and the remediation potential difference is applied to the enrichment area of ​​the organic contaminated soil through the second remediation electrode to complete the soil remediation of the enrichment area.

[0011] In combination with the first aspect, in certain implementations of the first aspect, collecting the restoration current of the restoration area of ​​the organic contaminated soil based on the current detection array to obtain multiple restoration currents and their corresponding restoration coordinates specifically includes:

[0012] Obtain a preset spatial coordinate origin, and establish a two-dimensional plane coordinate system according to the preset spatial coordinate origin;

[0013] Based on the current detection array in the remediation area of ​​the organic contaminated soil, the remediation current in the remediation area is collected to obtain a plurality of remediation currents and detection positions corresponding to the remediation currents in the current detection array;

[0014] The repair coordinates corresponding to each repair current are determined according to the detection positions corresponding to the repair currents in the current detection array and the two-dimensional plane coordinate system.

[0015] In combination with the first aspect, in certain implementations of the first aspect, determining the pollution enrichment coefficient in the soil remediation process according to each remediation current and its corresponding remediation coordinates specifically includes:

[0016] Obtain the direction of current transmission;

[0017] Classifying the repair coordinates corresponding to each repair current according to the current transmission direction to obtain a plurality of repair current subsequences;

[0018] Current uniformity extraction is performed based on each remediation current subsequence to obtain multiple current uniformities, and the pollution enrichment factor in the soil remediation process is determined according to each current uniformity.

[0019] In combination with the first aspect, in certain implementations of the first aspect, determining the repair potential difference according to the pollution enrichment coefficient and the current density of the enrichment area specifically includes:

[0020] Determining an enrichment adjustment ratio according to an average current density of the current detection array and a current density of the enrichment area;

[0021] A correction coefficient is determined according to the pollution enrichment coefficient and the enrichment adjustment ratio to obtain an initial repair potential difference, and the initial repair potential difference is corrected according to the correction coefficient to obtain a repair potential difference.

[0022] In combination with the first aspect, in certain implementations of the first aspect, locating the contaminated soil according to the current intensity and the remediation coordinates corresponding to the remediation current, and determining the enrichment area of ​​the organic contaminated soil specifically includes:

[0023] Obtaining the current intensity corresponding to each repair current, marking the repair current that is higher than the current intensity threshold, and obtaining a marked current;

[0024] Obtaining the current transmission direction, determining the neighborhood space corresponding to the marked current according to the repair coordinates corresponding to the marked current and the current transmission direction, and then using other repair currents in the neighborhood space of the marked current as test currents;

[0025] Determine the current decreasing trends corresponding to the marking current and each test current, determine the credibility score of the marking current according to the current decreasing trends corresponding to the marking current and each test current, and when the credibility score is higher than the standard score, use the neighborhood space corresponding to the marking current as the enrichment area of ​​the organic contaminated soil.

[0026] In combination with the first aspect, in certain implementations of the first aspect, determining the initial remediation potential difference based on the soil parameters specifically includes: obtaining a preset potential difference mapping table, and then mapping according to the corresponding range interval of the soil parameters of the organic contaminated soil, so as to determine the initial remediation potential difference.

[0027] In combination with the first aspect, in certain implementations of the first aspect, pre-treating the organic contaminated soil includes: excavating the organic contaminated soil, transferring it to a remediation area, and collecting soil parameters.

[0028] In a second aspect, the present application provides a highly efficient organically contaminated soil remediation device, which includes a soil remediation unit, wherein the soil remediation unit includes:

[0029] A soil pretreatment unit, used to obtain soil parameters of the organic contaminated soil after pretreatment of the organic contaminated soil, and determine an initial remediation potential difference based on the soil parameters;

[0030] A soil detection unit, used to apply an initial repair potential difference through a repair electrode to perform organic contaminated soil repair, collect repair current from the repair area of ​​the organic contaminated soil based on a current detection array, and obtain multiple repair currents and their corresponding repair coordinates;

[0031] An enrichment area positioning unit is used to determine the pollution enrichment coefficient in the soil remediation process according to each remediation current and its corresponding remediation coordinates. When the pollution enrichment coefficient is higher than a preset threshold, the contaminated soil is located according to the current intensity and remediation coordinates corresponding to the remediation current to determine the enrichment area of ​​the organic contaminated soil;

[0032] The execution unit is used to determine the repair potential difference according to the pollution enrichment coefficient and the current density of the enrichment area, and apply the repair potential difference in the enrichment area of ​​the organic contaminated soil through the second repair electrode to complete the soil repair of the enrichment area.

[0033] In a third aspect, the present application provides a computer terminal device, comprising a memory and a processor, wherein the memory stores a code, and the processor is configured to obtain the code and execute the above-mentioned method for remediating a highly efficient organic contaminated soil.

[0034] In a fourth aspect, the present application provides a computer-readable storage medium, wherein the computer-readable storage medium stores at least one computer program, and the computer program is loaded and executed by a processor to implement the operations performed by the above-mentioned method for remediation of highly efficient organic contaminated soil.

[0035] The technical solution provided by the embodiments disclosed in this application has the following beneficial effects:

[0036] In a highly efficient organic contaminated soil remediation method and device provided by the present application, the organic contaminated soil is first pretreated, and then the soil parameters of the organic contaminated soil are obtained, and an initial remediation potential difference is determined based on the soil parameters; the organic contaminated soil is remediated by applying an initial remediation potential difference through a remediation electrode, and the remediation current of the remediation area of ​​the organic contaminated soil is collected based on a current detection array to obtain a plurality of remediation currents and their corresponding remediation coordinates; the pollution enrichment coefficient in the soil remediation process is determined according to each remediation current and its corresponding remediation coordinates, and when the pollution enrichment coefficient is higher than a preset threshold, the contaminated soil is located according to the current intensity and remediation coordinates corresponding to the remediation current, and the enrichment area of ​​the organic contaminated soil is determined; the remediation potential difference is determined according to the pollution enrichment coefficient and the current density of the enrichment area, and the remediation potential difference is applied to the enrichment area of ​​the organic contaminated soil by a second remediation electrode to complete the soil remediation in the enrichment area.

[0037] It can be seen that the present application obtains the soil parameters of organically contaminated soil through pretreatment, and can accurately determine the initial repair potential difference, so that the repair potential difference can be adjusted according to the characteristics of different soils, and the repair current is collected in real time through the repair electrode and the current detection array, and each repair current and its corresponding repair coordinates are recorded, so as to dynamically reflect the changes in the electric field strength during the repair process, help identify the migration and distribution of pollutants in the soil, determine the migration trend and enrichment area of ​​pollutants through the distribution of current, and provide real-time information for the positioning of pollutant enrichment areas. Finally, according to the concentration of pollutants, the repair potential difference of the second repair electrode is adjusted to optimize the distribution of the electric field in the enrichment area, and enhance the directionality and efficiency of pollutant migration. This helps to concentrate repair resources, avoid excessive repair of non-contaminated areas, improve energy efficiency, and also avoid the negative impact of excessive electric field strength on soil structure and surrounding environment.

[0038] In summary, the present application locates contaminated soil according to the current intensity and remediation coordinates corresponding to the remediation current, determines the enriched area of ​​organic contaminated soil, and applies a remediation potential difference in the enriched area of ​​organic contaminated soil through a second remediation electrode, thereby being able to detect and remediate the enriched area of ​​pollutants during the remediation process of organic contaminated soil, thereby improving the remediation efficiency of organic contaminated soil. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 is an exemplary flow chart of a highly efficient method for remediating organic contaminated soil according to some embodiments of the present application;

[0040] Figure 2 is a schematic structural diagram of a soil remediation unit according to some embodiments of the present application;

[0041] Figure 3 It is a structural schematic diagram of a computer terminal device for implementing a highly efficient method for remediating organic contaminated soil according to some embodiments of the present application. DETAILED DESCRIPTION

[0042] The present application obtains soil parameters of the organic contaminated soil after pre-treating the organic contaminated soil, and determines an initial remediation potential difference based on the soil parameters; the organic contaminated soil is remediated by applying the initial remediation potential difference through a remediation electrode, and the remediation current of the remediation area of ​​the organic contaminated soil is collected based on a current detection array to obtain multiple remediation currents and their corresponding remediation coordinates; the pollution enrichment coefficient in the soil remediation process is determined according to each remediation current and its corresponding remediation coordinates, and when the pollution enrichment coefficient is higher than a preset threshold, the contaminated soil is located according to the current intensity and remediation coordinates corresponding to the remediation current, and the enrichment area of ​​the organic contaminated soil is determined; the remediation potential difference is determined according to the pollution enrichment coefficient and the current density of the enrichment area, and the remediation potential difference is applied to the enrichment area of ​​the organic contaminated soil by a second remediation electrode to complete the soil remediation of the enrichment area, so that the enrichment area of ​​the pollutant can be detected and remediated during the remediation process of the organic contaminated soil, thereby improving the remediation efficiency of the organic contaminated soil.

[0043] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods. Figure 1 , which is an exemplary flow chart of a highly efficient organic contaminated soil remediation method according to some embodiments of the present application. The highly efficient organic contaminated soil remediation method 100 mainly includes the following steps:

[0044] In step S101, after pre-treating the organic contaminated soil, soil parameters of the organic contaminated soil are obtained, and an initial remediation potential difference is determined based on the soil parameters.

[0045] Optionally, in some embodiments, the present application adopts electrodynamic remediation technology to remediate organic contaminated soil. It should be noted that electrodynamic remediation technology has the advantages of low cost, high treatment efficiency, strong controllability, and friendliness to the natural environment. It is suitable for in situ soil remediation and ex situ soil remediation. It can also be used for the remediation of soil pollution in industrial pollution sites, mines, farmland, etc. It has a high removal effect on low-concentration pollutants and a poor removal effect on high-concentration pollutants. Therefore, the application of soil electrodynamic remediation technology needs to consider factors such as the nature of the soil, the type and concentration of pollutants, and the treatment time; in actual applications, it is necessary to select appropriate electrode materials, current density, treatment time and other parameters according to the specific situation to achieve the ideal removal effect. The present application obtains the soil parameters of organic contaminated soil through pretreatment, and can accurately determine the initial remediation potential difference; the remediation potential difference can be personalized according to the characteristics of different soils, rather than uniformly applied, which provides a more accurate starting point for the subsequent remediation process and helps to start the migration and removal process of pollutants more efficiently.

[0046] Preferably, in some embodiments, pre-treating the organic contaminated soil may include: excavating the organic contaminated soil, transferring it to a remediation area, and collecting soil parameters.

[0047] In a specific implementation, the soil parameters include: soil conductivity, soil moisture, soil pollutant concentration and type, and the molecular size and ion mobility of the corresponding soil pollutants.

[0048] In some other embodiments, pretreatment of organic contaminated soil may also include: first, increasing the moisture of the soil through humidification treatment to facilitate electrical osmosis and migration of pollutants; then adjusting the pH of the soil so that pollutants can be more easily dissolved or migrated through an electric field; and adding chemical agents such as surfactants, acidic or alkaline chemical reagents to help improve the migration ability of pollutants; and finally stirring the organic contaminated soil to improve the uniformity of the soil and reduce the layer differences in the organic contaminated soil.

[0049] It should be noted that the efficiency of electrodynamic remediation is affected by multiple factors, including the molecular size of pollutants, ion mobility, pollutant concentration and type, physical and chemical properties of soil (such as solubility, ion concentration, organic matter content in soil, etc.), in addition, soil permeability, wettability and electrode configuration are also important factors affecting the remediation effect. The initial remediation potential difference described in this application is the potential difference value applied when the remediation electrode is inserted into the organically contaminated soil for electrodynamic remediation.

[0050] Preferably, in some embodiments, determining the initial remediation potential difference based on the soil parameters can be achieved by the following steps: obtaining a preset potential difference mapping table. In specific implementation, the potential difference mapping table can be calibrated through multiple tests. The potential difference mapping table is used to map different soil parameters to corresponding potential difference results, and then map according to the corresponding range interval of the soil parameters of the organic contaminated soil, so as to determine the initial remediation potential difference. In the process of determining the initial remediation potential difference by soil parameters in the present application, a reasonable initial remediation potential difference can not only improve the efficiency of pollutant migration, but also avoid the negative impact of excessive electric field strength on soil structure and surrounding environment. In some other embodiments, the initial remediation potential difference can also be calibrated as a constant, which is not limited in the present application.

[0051] In step S102, an initial remediation potential difference is applied by the remediation electrode to remediate the organic contaminated soil, and remediation current is collected from the remediation area of ​​the organic contaminated soil based on a current detection array to obtain a plurality of remediation currents and their corresponding remediation coordinates.

[0052] It should be noted that the repair electrode is a plate-shaped metal electrode, and there are positive electrodes and negative electrodes in the repair electrode. The number of positive electrodes and negative electrodes is the same and they are evenly arranged at both ends of the repair area of ​​the organic contaminated soil. The electrode spacing of the repair electrode is fixed to a constant. During the repair of organic contaminated soil, the potential difference of the repair electrode is controlled according to the initial repair potential difference.

[0053] Optionally, in some embodiments, the current detection array is a potentiometer or current test probe that is distributed and evenly arranged in the remediation area of ​​the organic contaminated soil, and the remediation current is the current signal value generated when the organic pollutants are transferred in different soil areas detected by the current detection array. It should be noted that the inorganic salts and other components that affect the conductivity in the soil are usually evenly distributed, while the distribution of pollutants in the organic contaminated soil is random, that is, the concentration of pollutants in some areas is higher, while the concentration in other areas is lower. Therefore, this uneven concentration phenomenon will affect the conductivity in the soil to a certain extent, thereby causing uneven electric field distribution. By collecting the remediation current at different positions in the remediation area through the current detection array, the enrichment degree of organic pollutants in the organic contaminated soil can be investigated.

[0054] It should be noted that by associating the current of each detection point with its spatial coordinates to form multiple remediation currents and their corresponding remediation coordinates, it is possible to provide information about the electric field distribution, pollutant migration and soil response of the remediation area. Preferably, in some embodiments, the remediation current of the remediation area of ​​the organic contaminated soil is collected based on the current detection array, and the multiple remediation currents and their corresponding remediation coordinates can be obtained by the following steps:

[0055] Obtain a preset spatial coordinate origin, and establish a two-dimensional plane coordinate system according to the preset spatial coordinate origin;

[0056] Based on the current detection array in the remediation area of ​​the organic contaminated soil, the remediation current in the remediation area is collected to obtain a plurality of remediation currents and detection positions corresponding to the remediation currents in the current detection array;

[0057] The repair coordinates corresponding to each repair current are determined according to the detection positions corresponding to the repair currents in the current detection array and the two-dimensional plane coordinate system.

[0058] It should be noted that by analyzing the collected current data, the dynamic situation of pollutant migration in the soil can be understood. For example, areas with higher currents indicate areas with stronger conductivity and higher pollutant concentrations, and areas with lower currents indicate areas with poor conductivity in the soil or poor pollutant migration. In some embodiments, data visualization technology can be used to spatially display the remediation current and remediation coordinates, so that problem areas that may arise during the remediation process can be intuitively identified. In specific implementation, a current heat map can be constructed based on multiple remediation currents and their corresponding remediation coordinates. The distribution of current density can be seen through the current heat map, and the direction and efficiency of pollutant migration can be inferred.

[0059] In step S103, the pollution enrichment coefficient in the soil remediation process is determined according to each remediation current and its corresponding remediation coordinates. When the pollution enrichment coefficient is higher than a preset threshold, the contaminated soil is located according to the current intensity and remediation coordinates corresponding to the remediation current to determine the enrichment area of ​​the organic contaminated soil.

[0060] In a specific implementation, the preset threshold of the pollution enrichment coefficient is calibrated as a constant based on historical experience.

[0061] It should be noted that the pollution enrichment coefficient is used to quantify the enrichment degree of pollutants in the organic contaminated soil. The pollution enrichment coefficient is determined based on the current uniformity of each remediation current subsequence in the current transfer direction during the electrodynamic remediation process. Preferably, in some embodiments, the pollution enrichment coefficient in the soil remediation process is determined according to each remediation current and its corresponding remediation coordinates. The following steps can be used to achieve this:

[0062] Obtain the direction of current transmission;

[0063] Classifying the repair coordinates corresponding to each repair current according to the current transmission direction to obtain a plurality of repair current subsequences;

[0064] Current uniformity extraction is performed based on each remediation current subsequence to obtain multiple current uniformities, and the pollution enrichment factor in the soil remediation process is determined according to each current uniformity.

[0065] Optionally, in some embodiments, obtaining the current transfer direction can be achieved by using the following steps: obtaining the spatial coordinates of the repair electrode, and determining the current transfer direction based on the spatial coordinates of the repair electrode; wherein the repair electrode includes a positive and negative electrode, and the direction vector connecting the positive and negative electrodes is used as the current transfer direction.

[0066] In specific implementation, all repair currents in the same current transmission direction can be used as a repair current subsequence according to the current transmission direction and the repair coordinates corresponding to each repair current. For example, according to the current transmission direction, the area can be divided into several sub-areas, and the repair current and repair coordinates in each sub-area or sub-interval will form a subsequence. Each subsequence contains one or more current measurement points and corresponding spatial coordinates. Different subsequences reflect the current intensity and pollutant migration at different locations in the repair area; then the ratio between the standard deviation of all current intensities in the repair current subsequence and the mean current intensity is obtained as the current uniformity of the repair current subsequence, and the mean of each current uniformity is used as the pollution enrichment coefficient.

[0067] It should be noted that the direction of current transmission is consistent with the direction of the electric field. The current will flow from the anode (positive electrode) to the cathode (negative electrode). In the soil, the migration direction of pollutants is also determined by the force of the electric field. Pollutants will migrate along the direction of the electric field and concentrate on the electrode through mechanisms such as electromigration and infiltration. The pollution enrichment coefficient is usually inversely proportional to the intensity and distribution uniformity of the current. Specifically, in areas with strong currents and low uniformity, pollutants may accumulate more, so their enrichment coefficient is higher; while in areas with weak currents and high uniformity, pollutants are more evenly distributed and have a lower enrichment coefficient. This application increases the contrast of the repair currents in different areas in the current transmission direction by taking all the repair currents in the same current transmission direction as a repair current subsequence and then obtaining the current uniformity, which reduces the detection error caused by sensor detection interference and improves the detection accuracy of the pollution enrichment coefficient.

[0068] Optionally, in some embodiments, when the pollution enrichment coefficient is lower than a preset threshold, a repair electrode is used to apply an initial repair potential difference to the organic contaminated soil area during a calibrated repair cycle to complete the repair of the organic contaminated soil.

[0069] Preferably, in some embodiments, the contaminated soil is located according to the current intensity and the remediation coordinates corresponding to the remediation current, and the enrichment area of ​​the organic contaminated soil is determined by the following steps:

[0070] Obtaining the current intensity corresponding to each repair current, marking the repair current that is higher than the current intensity threshold, and obtaining a marked current;

[0071] Obtaining the current transmission direction, determining the neighborhood space corresponding to the marked current according to the repair coordinates corresponding to the marked current and the current transmission direction, and then using other repair currents in the neighborhood space of the marked current as test currents;

[0072] Determine the current decreasing trends corresponding to the marking current and each test current, determine the credibility score of the marking current according to the current decreasing trends corresponding to the marking current and each test current, and when the credibility score is higher than the standard score, use the neighborhood space corresponding to the marking current as the enrichment area of ​​the organic contaminated soil.

[0073] Optionally, in some embodiments, the current intensity threshold may be calibrated by historical data, soil properties, or experimental results, which is not limited in the present application, and the standard score is calibrated as a constant based on historical experience.

[0074] In specific implementation, after obtaining the repair coordinates corresponding to the marked current and the current transmission direction, the repair coordinates corresponding to the marked current can be used as a preset spatial range in the current transmission direction as the neighborhood space corresponding to the marked current based on the current transmission direction. For example, the area within a certain coordinate distance in the current transmission direction is used as the neighborhood space, and then other repair currents in the neighborhood space of the marked current are used as test currents.

[0075] It should be noted that with the migration of pollutants, the remediation current in the organic contaminated soil will gradually weaken. The current decline trend is used to characterize the current decline caused by the remediation of contaminated soil by the remediation electrode. The current decline trend is a current value function with respect to time. Optionally, in some embodiments, determining the current decline trends corresponding to the marking current and each test current can be achieved by the following steps: obtaining the current differential sequences corresponding to the marking current and each test current, respectively, and then performing sequence decomposition on the current differential sequences corresponding to the marking current and each test current, respectively, to obtain the current decline trends corresponding to the marking current and each test current, respectively. In specific implementation, the current differential sequences corresponding to the marking current and each test current can be subjected to empirical mode decomposition to obtain the eigenmode functions corresponding to the marking current and each test current, respectively, as the current decline trend.

[0076] It should be noted that when the current changes of the marking current and the test current are regular, it reflects the directionality and consistency of the migration of pollutants. It can be determined that the high remediation current in the area is caused by pollutant enrichment. The credibility score of the marking current in this application is used to indicate the probability of pollutant enrichment in the neighborhood corresponding to the marking current. The credibility score of the marking current is determined based on the correlation between the current decline trends of the marking current and other detection currents in its neighborhood. Preferably, in some embodiments, the credibility score of the marking current is determined according to the current decline trends corresponding to the marking current and each test current. The following steps can be used to achieve this: according to the current decline trend of the marking current and the current decline trend of the first test current, determine the decline correlation between the marking current and the first test current;

[0077] The decrease correlations corresponding to the marking current and other inspection currents are obtained in the same manner, and the credibility score of the marking current is determined based on the average of all the decrease correlations.

[0078] In a specific implementation, the Pearson correlation coefficient between the current decreasing trend of the marking current and the current decreasing trend of the first test current may be used as the first decrease correlation degree.

[0079] It should be noted that the present application obtains the decreasing trend of the amount of the marker current and the detection current in its neighborhood, and determines the credibility score of the marker current according to the decreasing correlation between the current decreasing trends, so that the credibility of the enriched area can be judged according to the regularity of the conductivity change, thereby reducing the possibility of misjudgment of the enriched area, improving the detection accuracy of the pollutant enriched area, and increasing the remediation efficiency of organic contaminated soil remediation; in specific implementation, if the credibility score of the marker current is higher than the standard score, it can be determined that the marker current and its neighborhood space are enriched areas of organic contaminated soil, and the enriched area indicates that the pollutant concentration is high, thereby effectively identifying the enriched area of ​​the pollutant in the soil, and providing accurate regional positioning for soil remediation, so as to improve the efficiency and effectiveness of the soil remediation process.

[0080] In step S104, the remediation potential difference is determined according to the pollution enrichment coefficient and the current density of the enrichment area, and the remediation potential difference is applied to the enrichment area of ​​the organic contaminated soil through the second remediation electrode to complete the soil remediation of the enrichment area.

[0081] Optionally, in some embodiments, determining the repair potential difference according to the pollution enrichment coefficient and the current density of the enrichment area can be achieved by using the following steps:

[0082] Determining an enrichment adjustment ratio according to an average current density of the current detection array and a current density of the enrichment area;

[0083] A correction coefficient is determined according to the pollution enrichment coefficient and the enrichment adjustment ratio to obtain an initial repair potential difference, and the initial repair potential difference is corrected according to the correction coefficient to obtain a repair potential difference.

[0084] In a specific implementation, the ratio between the average current density of the current detection array and the current density of the enriched area can be used as the enrichment adjustment ratio, and the average current density is the average current value in the area.

[0085] Optionally, in some embodiments, the correction coefficient can be obtained by mapping through a correction coefficient mapping table according to the threshold interval of the pollution enrichment coefficient and the enrichment adjustment ratio. The correction coefficient mapping table is calibrated based on experience. In other embodiments, the correction coefficient = (the pollution enrichment coefficient × enrichment adjustment ratio) / standard pollution enrichment coefficient. Generally speaking, the larger the pollution enrichment coefficient and the enrichment adjustment ratio, the larger the correction coefficient obtained by mapping, thereby increasing the remediation efficiency of organic contaminated soil when the enrichment degree of organic pollutants is large. In specific implementation, the remediation potential difference = initial remediation potential difference × correction coefficient.

[0086] Preferably, in some embodiments, machine learning can also be performed on the pollution enrichment coefficient and the enrichment adjustment ratio, for example, by training a support vector machine to learn the historical pollution enrichment coefficient and the historical enrichment adjustment ratio, and the repair results of different repair potential differences, so as to determine the optimal correction coefficient for correcting the initial repair potential difference according to the pollution enrichment coefficient and the enrichment adjustment ratio.

[0087] In specific implementation, multiple current sensors can be set in the repair area to monitor the changes in current density and current intensity in real time and dynamically adjust the repair potential difference. For example, according to real-time feedback data, the repair potential difference applied to the second repair electrode is dynamically adjusted. If the current density is low or the migration speed of pollutants is slow, the potential difference can be appropriately increased; conversely, if the current density is too high, it may be necessary to appropriately reduce the potential difference to avoid excessive repair or waste of energy. According to the distribution of current density, the potential difference is adjusted to ensure the uniformity and effectiveness of the repair electric field in the pollution-enriched area. Combined with the pollution enrichment coefficient, the current density of the enriched area and the adjustment of the repair potential difference, the enriched area of ​​organic contaminated soil can be accurately determined and efficiently repaired, thereby improving the repair efficiency of organic contaminated soil remediation.

[0088] In addition, in another aspect of the present application, in some embodiments, the present application provides a highly efficient organic contaminated soil remediation device, the device comprising a soil remediation unit, reference Figure 2, which is a schematic diagram of the structure of exemplary hardware and / or software of a soil remediation unit according to some embodiments of the present application, the soil remediation unit 200 includes: a soil pretreatment unit 201, a soil detection unit 202, an enrichment area positioning unit 203 and an execution unit 204, which are described as follows:

[0089] A soil pretreatment unit 201, wherein the soil pretreatment unit 201 is used to obtain soil parameters of the organic contaminated soil after pretreatment of the organic contaminated soil, and determine an initial remediation potential difference based on the soil parameters;

[0090] A soil detection unit 202, the soil detection unit 202 is used to apply an initial repair potential difference through a repair electrode to perform organic contaminated soil repair, collect repair currents of the repair area of ​​the organic contaminated soil based on a current detection array, and obtain multiple repair currents and their corresponding repair coordinates;

[0091] An enrichment area positioning unit 203, the enrichment area positioning unit 203 is used to determine the pollution enrichment coefficient in the soil remediation process according to each remediation current and its corresponding remediation coordinates. When the pollution enrichment coefficient is higher than a preset threshold, the contaminated soil is located according to the current intensity and remediation coordinates corresponding to the remediation current to determine the enrichment area of ​​the organic contaminated soil;

[0092] The execution unit 204 is used to determine the remediation potential difference according to the pollution enrichment coefficient and the current density of the enrichment area, and apply the remediation potential difference to the enrichment area of ​​the organic contaminated soil through the second remediation electrode to complete the soil remediation of the enrichment area.

[0093] The above describes in detail an example of a highly efficient organic contaminated soil remediation method and device provided in an embodiment of the present application. It can be understood that in order to achieve the above functions, the corresponding device includes a hardware structure and / or software module corresponding to each function.

[0094] Those skilled in the art should easily realize that, in combination with the units and algorithm steps of each example described in the embodiments disclosed in this document, the present application can be implemented in the form of hardware or a combination of hardware and computer software. Whether a certain function in the application is executed in hardware or in a computer software-driven hardware manner depends on the specific application and design constraints of the technical solution. Therefore, professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.

[0095] In addition, the present application also provides a computer terminal device, which includes a memory and a processor, the memory stores a code, and the processor is configured to obtain the code and execute the above-mentioned high-efficiency organic contaminated soil remediation method.

[0096] In some embodiments, reference Figure 3 , which is a schematic diagram of the structure of a computer terminal device for implementing a highly efficient method for remediating organic contaminated soil according to some embodiments of the present application. A highly efficient method for remediating organic contaminated soil in the above embodiment can be achieved by Figure 3 The computer terminal device 300 shown in the figure is implemented, and the computer terminal device 300 includes at least one communication bus 301, a communication interface 302, a processor 303 and a memory 304.

[0097] The processor 303 can be a general-purpose central processing unit (CPU), an application-specific integrated circuit (ASIC), or one or more processors for controlling the execution of a highly efficient organic contaminated soil remediation method in the present application.

[0098] The communication bus 301 may include a path for transmitting information between the above-mentioned components.

[0099] The memory 304 may be a read-only memory (ROM) or other types of static storage devices that can store static information and instructions, a random access memory (RAM) or other types of dynamic storage devices that can store information and instructions, or an electrically erasable programmable read-only memory (EEPROM), a compact disc read-only memory (CD-ROM) or other optical disc storage, an optical disc storage (including a compressed optical disc, a laser disc, an optical disc, a digital versatile disc, a Blu-ray disc, etc.), a magnetic disk or other magnetic storage device, or any other medium that can be used to carry or store the desired program code in the form of an instruction or data structure and can be accessed by a computer, but is not limited thereto. The memory 304 may exist independently and be connected to the processor 303 via the communication bus 301. The memory 304 may also be integrated with the processor 303.

[0100] The memory 304 is used to store the program code for executing the solution of the present application, and the execution is controlled by the processor 303. The processor 303 is used to execute the program code stored in the memory 304. The program code may include one or more software modules. The determination of the pollution enrichment coefficient in the above embodiment can be implemented by the processor 303 and one or more software modules in the program code in the memory 304.

[0101] The communication interface 302 uses any transceiver or other device for communicating with other devices or communication networks, such as Ethernet, radio access network (RAN), wireless local area networks (WLAN), etc.

[0102] Optionally, the computer terminal device 300 may further include a power supply 305 for providing power to various devices or circuits in the real-time computer terminal device.

[0103] In a specific implementation, as an embodiment, a computer terminal device may include multiple processors, each of which may be a single-CPU processor or a multi-CPU processor. The processor here may refer to one or more devices, circuits, and / or processing cores for processing data (such as computer program instructions).

[0104] The above-mentioned computer terminal device may be a general-purpose computer terminal device or a dedicated computer terminal device. In a specific implementation, the computer terminal device may be a desktop computer, a portable computer, a network server, a personal digital assistant (PDA), a mobile phone, a tablet computer, a wireless terminal device, a communication device or an embedded device. The embodiment of the present application does not limit the type of computer terminal device.

[0105] In addition, in other aspects of the present application, a computer-readable storage medium is provided, wherein the computer-readable storage medium stores at least one computer program, and the computer program is loaded and executed by a processor to implement the operations performed by the above-mentioned method for remediating organic contaminated soil.

[0106] In summary, in an efficient method and device for remediating organic contaminated soil disclosed in an embodiment of the present application, first, the soil parameters of the organic contaminated soil are obtained after pretreatment of the organic contaminated soil, and an initial remediation potential difference is determined based on the soil parameters; the organic contaminated soil is remediated by applying the initial remediation potential difference through the remediation electrode, and the remediation current of the remediation area of ​​the organic contaminated soil is collected based on the current detection array to obtain multiple remediation currents and their corresponding remediation coordinates; the pollution enrichment coefficient in the soil remediation process is determined according to each remediation current and its corresponding remediation coordinates, and when the pollution enrichment coefficient is higher than a preset threshold, the contaminated soil is located according to the current intensity and remediation coordinates corresponding to the remediation current, and the enrichment area of ​​the organic contaminated soil is determined; the remediation potential difference is determined according to the pollution enrichment coefficient and the current density of the enrichment area, and the remediation potential difference is applied to the enrichment area of ​​the organic contaminated soil by the second remediation electrode to complete the soil remediation of the enrichment area, so that the enrichment area of ​​the pollutant can be detected and remediated during the remediation process of the organic contaminated soil, thereby improving the remediation efficiency of the organic contaminated soil.

[0107] The above is only an embodiment of the present application, and the common knowledge such as the specific technical scheme or characteristics in the scheme is not described in detail here. It should be pointed out that for those skilled in the art, without departing from the technical scheme of the present application, several modifications and improvements can be made, which should also be regarded as the scope of protection of the present application, and these will not affect the effect of the implementation of the present application and the practicality of the patent.

[0108] The scope of protection claimed by this application shall be based on the content of its claims. The specific implementation methods and other records in the specification can be used to interpret the content of the claims. Obviously, those skilled in the art can make various changes and modifications to this application without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of this application fall within the scope of the claims of this application and their equivalents, this application is also intended to include these modifications and variations.

Claims

1. A highly efficient method for remediating organically contaminated soil, characterized in that: include: After pre-treating the organic contaminated soil, obtaining soil parameters of the organic contaminated soil, and determining an initial remediation potential difference based on the soil parameters; Remediation of organic contaminated soil is performed by applying an initial remediation potential difference through a remediation electrode, and remediation current is collected from the remediation area of ​​the organic contaminated soil based on a current detection array to obtain a plurality of remediation currents and their corresponding remediation coordinates; Determine the pollution enrichment coefficient in the soil remediation process according to each remediation current and its corresponding remediation coordinates. When the pollution enrichment coefficient is higher than a preset threshold, locate the contaminated soil according to the current intensity and remediation coordinates corresponding to the remediation current to determine the enrichment area of ​​the organic contaminated soil; Determining the remediation potential difference according to the pollution enrichment coefficient and the current density of the enrichment area, applying the remediation potential difference to the enrichment area of ​​the organic contaminated soil through the second remediation electrode, and completing the soil remediation of the enrichment area; The pollution enrichment coefficient in the soil remediation process is determined according to each remediation current and its corresponding remediation coordinates, including: Obtain the direction of current transmission; Classifying the repair coordinates corresponding to each repair current according to the current transmission direction to obtain a plurality of repair current subsequences; Based on each remediation current subsequence, current uniformity extraction is performed to obtain multiple current uniformities, and the pollution enrichment coefficient in the soil remediation process is determined according to each current uniformity; Determining the repair potential difference according to the pollution enrichment coefficient and the current density of the enrichment area specifically includes: Determining an enrichment adjustment ratio according to an average current density of the current detection array and a current density of the enrichment area; A correction coefficient is determined according to the pollution enrichment coefficient and the enrichment adjustment ratio to obtain an initial repair potential difference, and the initial repair potential difference is corrected according to the correction coefficient to obtain a repair potential difference.

2. The method according to claim 1, characterized in that The remediation current of the remediation area of ​​the organic contaminated soil is collected based on the current detection array to obtain multiple remediation currents and their corresponding remediation coordinates, which specifically include: Obtain a preset spatial coordinate origin, and establish a two-dimensional plane coordinate system according to the preset spatial coordinate origin; Based on the current detection array in the remediation area of ​​the organic contaminated soil, the remediation current in the remediation area is collected to obtain a plurality of remediation currents and detection positions corresponding to the remediation currents in the current detection array; The repair coordinates corresponding to each repair current are determined according to the detection positions corresponding to the repair currents in the current detection array and the two-dimensional plane coordinate system.

3. The method according to claim 1, characterized in that The contaminated soil is located according to the current intensity and remediation coordinates corresponding to the remediation current, and the enrichment areas of organic contaminated soil are determined to include: Obtaining the current intensity corresponding to each repair current, marking the repair current that is higher than the current intensity threshold, and obtaining a marked current; Obtaining the current transmission direction, determining the neighborhood space corresponding to the marked current according to the repair coordinates corresponding to the marked current and the current transmission direction, and then using other repair currents in the neighborhood space of the marked current as test currents; Determine the current decreasing trends corresponding to the marking current and each test current, determine the credibility score of the marking current according to the current decreasing trends corresponding to the marking current and each test current, and when the credibility score is higher than the standard score, use the neighborhood space corresponding to the marking current as the enrichment area of ​​the organic contaminated soil.

4. The method according to claim 1, characterized in that Determining the initial restoration potential difference based on the soil parameters specifically includes: obtaining a preset potential difference mapping table, and then mapping according to the corresponding range interval of the soil parameters of the organically contaminated soil, so as to determine the initial restoration potential difference.

5. The method according to claim 1, characterized in that The pretreatment of organic contaminated soil includes: excavating the organic contaminated soil, transferring it to a remediation area, and collecting soil parameters.

6. A highly efficient organic contaminated soil remediation device, comprising a soil remediation unit, wherein the soil remediation unit uses the remediation method according to any one of claims 1 to 5 to perform soil remediation, characterized in that: The soil remediation unit comprises: A soil pretreatment unit, used to obtain soil parameters of the organic contaminated soil after pretreatment of the organic contaminated soil, and determine an initial remediation potential difference based on the soil parameters; A soil detection unit, used to apply an initial repair potential difference through a repair electrode to perform organic contaminated soil repair, collect repair current from the repair area of ​​the organic contaminated soil based on a current detection array, and obtain multiple repair currents and their corresponding repair coordinates; An enrichment area positioning unit is used to determine the pollution enrichment coefficient in the soil remediation process according to each remediation current and its corresponding remediation coordinates. When the pollution enrichment coefficient is higher than a preset threshold, the contaminated soil is located according to the current intensity and remediation coordinates corresponding to the remediation current to determine the enrichment area of ​​the organic contaminated soil; The execution unit is used to determine the repair potential difference according to the pollution enrichment coefficient and the current density of the enrichment area, and apply the repair potential difference in the enrichment area of ​​the organic contaminated soil through the second repair electrode to complete the soil repair of the enrichment area.

7. A computer terminal device, characterized in that: The computer terminal device includes a memory and a processor, the memory stores a code, and the processor is configured to obtain the code and execute the high-efficiency organic contaminated soil remediation method according to any one of claims 1 to 5.

8. A computer-readable storage medium storing at least one computer program, characterized in that: The computer program is loaded and executed by a processor to implement the operations performed by the method for remediating organic contaminated soil according to any one of claims 1 to 5.

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