Contaminated soil remediation system based on in-situ thermal desorption

Abstract

The present invention discloses a contaminated soil remediation system based on in-situ thermal desorption, and relates to the technical field of contaminated soil remediation. In order to solve the problem that the technical implementation of precise control and deployment of multi-segment electrodes is difficult, the implementation and maintenance costs are high, and different regions and types of contaminated soils may have different physical and chemical properties, thereby affecting the heating effect of the electrode and the treatment effect of tail water; the present invention heats the contaminated soil to decompose and volatilize organic matter, remove pollutants in the contaminated soil, and control the temperature and power during the heating process to ensure the best desorption effect; and monitor the heating process in real time, and adjust it when necessary to ensure safety and efficiency. This system is suitable for various types of contaminated soil, especially for deeply contaminated contaminated soil. It has a significant effect. Through the application of this system, the cost of contaminated soil remediation can be reduced, while reducing the impact on the environment.

Description

Technical Field

[0001] The present invention relates to the technical field of contaminated soil remediation, and in particular to a contaminated soil remediation system based on in-situ thermal desorption. Background Art

[0002] Traditional methods for the remediation of contaminated soil have problems such as long remediation cycles, high costs, and secondary pollution. Regarding the contaminated soil remediation system, a patent application with publication number CN112170471A discloses an in-situ thermal desorption method and in-situ thermal desorption system for contaminated soil, including the following steps: S1: on-site investigation, S2: well site deployment and construction, S3: auxiliary equipment deployment, S4: electrode well deployment, and S5: extraction well deployment. The invention adjusts the working state and working time of different sections of electrodes according to the remediation of contaminated soil at different depths, and achieves precise heating of contaminated soil at different depths, thereby saving energy consumption and improving remediation efficiency; at the same time, the extracted tail water is treated, and the treated tail water is recycled to replenish water for the electrode well, so that each electrode well and the contaminated soil form a water-containing passage environment; in addition, the electrode is heated by 60HZ low-frequency alternating current to avoid the evaporation of water in the contaminated soil too fast, resulting in an insulation gap, maintain the conductive path, and make the influence radius of the electrode well larger, which also makes the system more energy-efficient.

[0003] Although the above patent saves energy and improves repair efficiency, it still has the following problems:

[0004] In the existing technology, the technical implementation of precise control and deployment of multi-segment electrodes is difficult, the implementation and maintenance costs are high, and contaminated soils in different regions and of different types may have different physical and chemical properties, which will affect the heating effect of the electrodes and the treatment effect of tail water, and the environmental adaptability is poor. Summary of the invention

[0005] The purpose of the present invention is to provide a contaminated soil remediation system based on in-situ thermal desorption, which heats the contaminated soil and controls the temperature and power during the heating process to ensure the best desorption effect; and monitors the heating process and makes adjustments when necessary to ensure safety and efficiency. The system is applicable to various types of contaminated soil, especially for deeply contaminated contaminated soil. Through the application of the system, the cost of contaminated soil remediation can be reduced, while reducing the impact on the environment, so as to solve the problems raised in the above-mentioned background technology.

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

[0007] Contaminated soil remediation system based on in-situ thermal desorption, including:

[0008] A construction deployment unit is used to formulate a construction plan based on the actively uploaded contaminated soil remediation data and the acquired contaminated soil remediation data, and to determine the construction preparation and on-site deployment work of the contaminated soil remediation project;

[0009] The heating remediation unit is used to determine the target pollutants in the contaminated soil based on the contaminated soil remediation data, heat the contaminated soil using the operation terminal deployed on site, and heat the contaminated soil to above the boiling point of the target pollutants based on the data characteristics of the target pollutants.

[0010] Tailwater treatment and recycling unit, which is used to extract volatile pollutants from contaminated soil based on the on-site operation terminal, and recycle and safely discharge them after waste gas treatment;

[0011] The monitoring and evaluation unit is used to collect contaminated soil data in real time during the remediation process, analyze and process the contaminated soil data, monitor abnormal conditions during the remediation process, evaluate the remediation effect of the contaminated soil, and generate a remediation report.

[0012] Furthermore, the construction deployment unit includes:

[0013] The construction data acquisition module is used to collect and analyze the contaminated soil remediation data related to the contaminated soil remediation project, and integrate the contaminated soil remediation data to generate construction data;

[0014] The construction plan design module is used to formulate a construction plan for contaminated soil remediation based on construction data, determine the layout and laying route of each operation terminal, and the location and number of each operation terminal;

[0015] The construction plan evaluation module is used to conduct a comprehensive evaluation of the construction plan, compare the comprehensive evaluation score with the preset plan evaluation threshold, determine the construction plan to be implemented, and generate a construction plan evaluation report;

[0016] The construction plan implementation module is used to build a site implementation management plan based on the determined construction plan, and to implement the site implementation management plan and deploy various operation terminals.

[0017] Furthermore, the heating repair unit comprises:

[0018] A heating remediation plan formulation module is used to formulate a heating remediation plan based on the determined construction plan and the acquired contaminated soil remediation data, including heating method, heating temperature range, heating time, heating rate and heating mode;

[0019] Heating parameter adjustment module, used for:

[0020] Analyze the developed heating remediation plan, extract characteristic data of contaminated soil, and determine the pollutant types of target pollutants in the contaminated soil;

[0021] Determining heating parameters of the heating source based on characteristic data of the contaminated soil and target pollutant characteristics corresponding to the pollutant type, and the operation terminal heating the contaminated soil based on the heating parameters;

[0022] The heating mode switching module is used to collect the temperature data of the contaminated soil in real time based on the temperature sensor, and match the corresponding heating mode according to the heating remediation plan and the contaminated soil temperature data obtained in real time.

[0023] Furthermore, the heating repair unit further includes:

[0024] The heating equipment supervision module is used to monitor the equipment in the heating process in real time, compare the real-time monitored heating process data with the heating repair plan, and monitor and handle abnormal situations based on the comparison results;

[0025] Safety protection module, used to set the safety temperature threshold of heating equipment, monitor potential danger sources, and formulate emergency plans;

[0026] The volatilization efficiency evaluation module is used to monitor the concentration change indicators of pollutants in the exhaust gas, evaluate the volatilization efficiency of pollutants during the heating process in combination with heating parameters, heating mode and heating time, and adjust the heating repair plan based on the evaluation results.

[0027] Furthermore, the heating equipment supervision module includes:

[0028] A first temperature value detection module is used to monitor in real time the temperature value of the temperature distribution state of the contaminated soil corresponding to the heating equipment;

[0029] A grid acquisition module, used to perform grid processing on the contaminated soil distribution area of ​​the heating equipment, and obtain a grid area corresponding to the contaminated soil distribution area;

[0030] The first heating state coefficient acquisition module is used to use the average temperature value corresponding to each grid area as a temperature value of the contaminated soil temperature distribution state, and obtain the heating state coefficient of the current contaminated soil according to the temperature values ​​of the multiple contaminated soil temperature distribution states corresponding to the grid area; wherein the heating state coefficient is obtained by the following formula:

[0031] ;

[0032] Where W represents the heating state coefficient; n represents the total number of grids contained in the grid area corresponding to the contaminated soil distribution area; T irepresents the temperature value corresponding to the temperature distribution state of the contaminated soil corresponding to the i-th grid; T m represents the heating temperature corresponding to the heating device; m represents the number of grids spanned by the straight-line distance between the grid corresponding to the maximum temperature value and the grid corresponding to the minimum temperature value; T j represents the temperature value corresponding to the jth grid; T z represents the middle value of the temperature value corresponding to the grids other than the m grids spanned by the straight-line distance between the grid corresponding to the maximum temperature value and the grid corresponding to the minimum temperature value; α represents the preset temperature consistency weight factor, and its value range is [0,1]; γ represents the preset temperature gradient weight factor, and its value range is [0,1]; τ represents the preset tolerance value of the temperature deviation between the temperature of the ith grid and the temperature of the nearby grids used to define the grid area, and its value range is [1.2,1.8]; T p represents the average value of the grids contained in the grid area corresponding to the distribution area of ​​contaminated soil; s represents the standard deviation of the actual temperature corresponding to n grids; s max Indicates the preset maximum allowable temperature standard deviation;

[0033] a first comparison module, configured to compare the heating state coefficient with a preset heating state coefficient threshold;

[0034] A temperature adjustment module, used for adjusting the heating temperature of the heating device when the heating state coefficient is lower than a preset heating state coefficient threshold;

[0035] A second temperature value detection module is used to monitor and extract the temperature value of the temperature distribution state of the contaminated soil again after the preset time period after the heating temperature is adjusted;

[0036] A second heating state coefficient acquisition module is used to obtain a heating state coefficient by using the temperature value of the temperature distribution state of the contaminated soil extracted again;

[0037] a second comparison module, configured to perform a secondary comparison between the heating state coefficient and a preset heating state coefficient threshold;

[0038] The abnormality judgment module is used to determine that an abnormality exists in the heating process and issue an abnormality alarm when the heating state coefficient is still lower than the preset heating state coefficient threshold value after the second comparison.

[0039] Furthermore, the temperature adjustment module includes:

[0040] A heating temperature extraction module is used to extract the heating temperature of the current heating device;

[0041] A heating state coefficient extraction module is used to extract the current heating state coefficient;

[0042] A coefficient difference acquisition module, used to acquire the difference between the heating state coefficient and a preset heating state coefficient threshold according to the current heating state coefficient;

[0043] A heating temperature adjustment module is used to adjust the heating temperature of the current heating device according to the difference between the heating state coefficient and a preset heating state coefficient threshold value, and obtain the adjusted heating temperature; wherein the adjusted heating temperature is obtained by the following formula:

[0044] ;

[0045] Among them, T mt Indicates the adjusted heating temperature; W indicates the heating state coefficient; W y represents the preset heating state coefficient threshold; ΔT represents the temperature compensation amount; n represents the total number of grids contained in the grid area corresponding to the contaminated soil distribution area; T i represents the temperature value corresponding to the temperature distribution state of the contaminated soil corresponding to the i-th grid; T m Indicates the heating temperature corresponding to the heating equipment; s max Indicates the preset maximum allowable temperature standard deviation; s m It represents the temperature standard deviation of the grids other than the m grids spanned by the straight-line distance between the grid corresponding to the maximum temperature value and the grid corresponding to the minimum temperature value, and e is the exponential base.

[0046] Furthermore, the heating repair plan formulation module formulates a heating repair plan, specifically:

[0047] Acquire data on contaminated soil, including the types, concentrations, distribution ranges of pollutants, and the physical and chemical properties of contaminated soil, clarify remediation goals, and determine the expected pollutant removal rates and contaminated soil quality standards;

[0048] Setting heating parameter thresholds, heating time and heating rate according to the data acquisition and remediation objectives of the contaminated soil, and predicting the temperature of the contaminated soil according to the set heating parameter thresholds, heating time and heating rate;

[0049] According to the distribution range of pollutants and temperature prediction results, a heating mode is formulated, including preheating mode, high power mode and insulation mode, and the time nodes of each heating mode are determined.

[0050] Furthermore, the volatilization efficiency evaluation module evaluates the volatilization efficiency of pollutants during the heating process, specifically including:

[0051] Determine initial parameters of the heating repair scheme, including heating power, heating temperature and heating time, and obtain initial concentration data of pollutants based on the initial parameters of the heating repair scheme;

[0052] Calculate the difference between the initial concentration data and the final concentration data of pollutants in the exhaust gas before and after heating to determine the reduction in pollutant concentration;

[0053] The total amount of volatilized pollutants is obtained by combining the exhaust gas flow rate and the heating time, and the volatilization efficiency of the pollutants is obtained based on the total amount of volatilized pollutants.

[0054] Furthermore, the monitoring and evaluation unit includes:

[0055] The abnormal monitoring and early warning module is used to establish a time axis based on the heating time of the heating remediation plan, input the temperature prediction results of the contaminated soil into the time axis, generate a predicted temperature curve, and trigger the early warning alarm mechanism when the monitored contaminated soil temperature data exceeds the normal range;

[0056] The remediation effect evaluation module is used to compare the actual contaminated soil data based on real-time monitoring with the remediation targets in the heating remediation plan, and evaluate the remediation effect of the contaminated soil based on the comparison results;

[0057] The report generation module is used to generate a remediation report for the contaminated soil based on the actual contaminated soil data and assessment results monitored in real time.

[0058] Furthermore, the abnormal monitoring and early warning module is also used to:

[0059] Build a data interaction channel with the heating equipment supervision module and the volatilization efficiency evaluation module, and obtain equipment abnormality data and pollutant emission abnormality data in real time based on the data interaction channel;

[0060] Match the corresponding warning category according to the acquired abnormal data type, and build the corresponding warning level threshold according to the abnormal data type;

[0061] Each abnormal data is compared with the corresponding warning level threshold, the warning level of each abnormal data is determined, and the corresponding warning information is matched based on the warning level.

[0062] Compared with the prior art, the present invention has the following beneficial effects:

[0063] By heating the contaminated soil, the organic matter in it is decomposed and volatilized, thereby removing pollutants from the contaminated soil. The temperature and power during the heating process are controlled to ensure the best desorption effect. The heating process is monitored in real time and adjusted when necessary to ensure safety and efficiency. It is suitable for various types of contaminated soil, especially for deeply contaminated soil. It has a significant effect, reduces the cost of contaminated soil remediation, and reduces the impact on the environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0064] Figure 1 This is a module diagram of the contaminated soil remediation system based on in-situ thermal desorption of the present invention. DETAILED DESCRIPTION

[0065] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0066] In order to solve the technical problems in the existing technology that the precise control and deployment of multi-segment electrodes are difficult to implement, the cost of implementation and maintenance is high, and different regions and types of contaminated soils may have different physical and chemical properties, thus affecting the heating effect of the electrodes and the treatment effect of the tail water, and the poor environmental adaptability, please refer to Figure 1 , this embodiment provides the following technical solutions:

[0067] Contaminated soil remediation system based on in-situ thermal desorption, including:

[0068] The construction deployment unit is used to formulate a construction plan based on the actively uploaded contaminated soil remediation data, determine the construction preparation and on-site deployment work of the contaminated soil remediation project, and ensure that all equipment and systems can be accurately and efficiently installed in the contaminated soil area according to the design requirements, so as to prepare for the subsequent heating remediation work;

[0069] In this embodiment, the construction deployment unit includes:

[0070] The construction data acquisition module is used to collect and analyze the contaminated soil remediation data related to the contaminated soil remediation project, including contamination depth, contamination concentration, groundwater level, climate conditions, etc., and integrate the contaminated soil remediation data to generate construction data, including the spatial distribution map of contaminated soil, pollution degree assessment report, etc.;

[0071] The construction plan design module is used to formulate a construction plan for contaminated soil remediation based on construction data, determine the layout and laying route of each operation terminal, and the location and number of each operation terminal;

[0072] The construction plan evaluation module is used to conduct a comprehensive evaluation of the construction plan, including the evaluation of the technical feasibility, economic rationality, environmental impact and social acceptance of the construction plan, compare the comprehensive evaluation score with the preset plan evaluation threshold, determine the construction plan to be implemented, and generate a construction plan evaluation report, including the evaluation results and improvement suggestions;

[0073] The construction plan implementation module is used to build a site implementation management plan based on the determined construction plan, including organizing the construction team, deploying construction equipment, arranging the construction progress, monitoring the construction quality, etc., and implementing the site implementation management plan and deploying various operation terminals;

[0074] The heating remediation unit is used to determine the target pollutants in the contaminated soil based on the contaminated soil remediation data, heat the contaminated soil using the operation terminal deployed on site, and heat the contaminated soil to above the boiling point of the target pollutants based on the data characteristics of the target pollutants, so that the organic matter in the contaminated soil decomposes and volatilizes. It includes a heating source, heating pipes, temperature sensors, power regulators, etc. The heating methods may include electric heating, gas combustion heating, etc.

[0075] Tailwater treatment and recycling unit, which is used to extract volatile pollutants from contaminated soil based on the on-site operation terminal, and recycle and safely discharge them after waste gas treatment;

[0076] The monitoring and evaluation unit is used to collect data such as contaminated soil temperature, humidity, and pollutant concentration in real time during the remediation process, analyze and process the contaminated soil data, monitor abnormal conditions during the remediation process, such as overtemperature, equipment failure, etc., and trigger alarms or shutdown protection to ensure the safety and efficiency of the remediation process. At the same time, it evaluates the remediation effect of the contaminated soil and generates a remediation report.

[0077] In this embodiment, heat energy is transmitted to the contaminated soil through a heating pipe, so that the temperature of the contaminated soil gradually rises to the critical temperature for the decomposition of organic matter, thereby promoting the volatilization of organic matter. The temperature sensor monitors the temperature of the contaminated soil in real time, and the power regulator adjusts the output power of the heating source according to temperature feedback to ensure that the heating process is carried out within the optimal temperature range. The extraction device extracts the volatilized pollutants from the contaminated soil, and removes the particulate matter and organic matter therein through the exhaust gas treatment system. The treated exhaust gas can be recycled or safely discharged into the atmosphere according to actual conditions. By collecting contaminated soil data in real time, the remediation effect of the contaminated soil is evaluated, and a remediation report is generated based on the evaluation results for user reference and decision-making.

[0078] In this embodiment, the pollutants in the contaminated soil are removed by heating the contaminated soil to decompose and volatilize the organic matter therein, and the temperature and power during the heating process are controlled to ensure the best desorption effect; the heating process is monitored in real time and adjusted when necessary to ensure safety and efficiency. This system is applicable to various types of contaminated soil, especially for deeply contaminated contaminated soil. Through the application of this system, the cost of contaminated soil remediation can be reduced, while reducing the impact on the environment.

[0079] In this embodiment, the heating repair unit includes:

[0080] The heating remediation plan formulation module is used to formulate a heating remediation plan based on the determined construction plan and the acquired contaminated soil remediation data, including heating method, heating temperature range, heating time, heating rate and heating mode, specifically:

[0081] Acquire data on contaminated soil, including the types, concentrations, distribution ranges of pollutants, and the physical and chemical properties of contaminated soil, clarify remediation goals, and determine the expected pollutant removal rates and contaminated soil quality standards;

[0082] Setting heating parameter thresholds, heating time and heating rate according to the data acquisition and remediation objectives of the contaminated soil, and predicting the temperature of the contaminated soil according to the set heating parameter thresholds, heating time and heating rate;

[0083] Formulate heating modes according to the distribution range of pollutants and temperature prediction results, including preheating mode, high power mode and insulation mode, and determine the time nodes of each heating mode;

[0084] Heating parameter adjustment module, used for:

[0085] Analyze the developed heating remediation plan, extract characteristic data of contaminated soil, and determine the pollutant types of target pollutants in the contaminated soil;

[0086] Determining heating parameters of the heating source based on characteristic data of the contaminated soil and target pollutant characteristics corresponding to the pollutant type, and the operation terminal heating the contaminated soil based on the heating parameters;

[0087] The heating mode switching module is used to collect the temperature data of the contaminated soil in real time based on the temperature sensor, and match the corresponding heating mode according to the heating remediation plan and the real-time contaminated soil temperature data. For example, a lower power is used for preheating in the early stage of heating to avoid the thermal stress problem caused by the rapid temperature rise of the contaminated soil; in the middle stage of heating, the power is gradually increased according to the temperature feedback of the contaminated soil to accelerate the volatilization of pollutants; at the end of heating, the power is reduced or the insulation mode is adopted to ensure that the pollutants are fully volatilized and reduce energy waste;

[0088] In this embodiment, according to the characteristics of the contaminated soil, the data characteristics of the target pollutants, and the real-time monitored contaminated soil temperature and other information, the output power of the heating source, the layout and density of the heating pipes, the heating rate and other parameters during the heating process are dynamically adjusted to ensure that the contaminated soil is evenly and effectively heated to above the boiling point of the target pollutants, thereby promoting the decomposition and volatilization of organic matter; different heating modes are switched according to the actual situation and needs during the heating process to ensure the best desorption effect;

[0089] The heating equipment supervision module is used to monitor the equipment in the heating process in real time, determine the working status of the heating source and the temperature distribution of the heating pipe, compare the real-time monitored heating process data with the heating repair plan, and monitor and handle abnormal situations based on the comparison results, such as equipment overheating, uneven heating, etc.;

[0090] Safety protection module, which is used to set the safety temperature threshold of heating equipment, monitor potential danger sources, such as flammable gas concentration, high temperature area, etc., install safety protection equipment, such as explosion-proof devices, temperature sensors, etc., and formulate emergency plans to reduce safety risks and ensure the safety of personnel and equipment;

[0091] The volatilization efficiency evaluation module is used to monitor the concentration change index of pollutants in the exhaust gas, evaluate the volatilization efficiency of pollutants during the heating process in combination with heating parameters, heating mode and heating time, and adjust the heating repair plan based on the evaluation results, including:

[0092] Determine initial parameters of the heating repair scheme, including heating power, heating temperature and heating time, and obtain initial concentration data of pollutants based on the initial parameters of the heating repair scheme;

[0093] Calculate the difference between the initial concentration data and the final concentration data of pollutants in the exhaust gas before and after heating to determine the reduction in pollutant concentration;

[0094] The total amount of volatilized pollutants is obtained by combining the exhaust gas flow rate and the heating time, and the volatilization efficiency of the pollutants is obtained based on the total amount of volatilized pollutants.

[0095] Specifically, the heating equipment supervision module includes:

[0096] A first temperature value detection module is used to monitor in real time the temperature value of the temperature distribution state of the contaminated soil corresponding to the heating equipment;

[0097] A grid acquisition module, used to perform grid processing on the contaminated soil distribution area of ​​the heating equipment, and obtain a grid area corresponding to the contaminated soil distribution area;

[0098] The first heating state coefficient acquisition module is used to use the average temperature value corresponding to each grid area as a temperature value of the contaminated soil temperature distribution state, and obtain the heating state coefficient of the current contaminated soil according to the temperature values ​​of the multiple contaminated soil temperature distribution states corresponding to the grid area; wherein the heating state coefficient is obtained by the following formula:

[0099] ;

[0100] Where W represents the heating state coefficient; n represents the total number of grids contained in the grid area corresponding to the contaminated soil distribution area; T i represents the temperature value corresponding to the temperature distribution state of the contaminated soil corresponding to the i-th grid; T m represents the heating temperature corresponding to the heating device; m represents the number of grids spanned by the straight-line distance between the grid corresponding to the maximum temperature value and the grid corresponding to the minimum temperature value; T j represents the temperature value corresponding to the jth grid; T z represents the middle value of the temperature value corresponding to the grids other than the m grids spanned by the straight-line distance between the grid corresponding to the maximum temperature value and the grid corresponding to the minimum temperature value; α represents the preset temperature consistency weight factor, and its value range is [0,1]; γ represents the preset temperature gradient weight factor, and its value range is [0,1]; τ represents the preset tolerance value of the temperature deviation between the temperature of the ith grid and the temperature of the nearby grids used to define the grid area, and its value range is [1.2,1.8]; T p represents the average value of the grids contained in the grid area corresponding to the distribution area of ​​contaminated soil; s represents the standard deviation of the actual temperature corresponding to n grids; s max Indicates the preset maximum allowable temperature standard deviation;

[0101] a first comparison module, configured to compare the heating state coefficient with a preset heating state coefficient threshold;

[0102] A temperature adjustment module, used for adjusting the heating temperature of the heating device when the heating state coefficient is lower than a preset heating state coefficient threshold;

[0103] A second temperature value detection module is used to monitor and extract the temperature value of the temperature distribution state of the contaminated soil again after the preset time period after the heating temperature is adjusted;

[0104] A second heating state coefficient acquisition module is used to obtain a heating state coefficient by using the temperature value of the temperature distribution state of the contaminated soil extracted again;

[0105] a second comparison module, configured to perform a secondary comparison between the heating state coefficient and a preset heating state coefficient threshold;

[0106] The abnormality judgment module is used to determine that an abnormality exists in the heating process and issue an abnormality alarm when the heating state coefficient is still lower than the preset heating state coefficient threshold value after the second comparison.

[0107] The technical effect of the above technical solution is: through the first temperature value detection module, the temperature distribution state of the contaminated soil corresponding to the heating equipment can be monitored in real time to ensure the accuracy and real-time nature of the data. This helps to accurately understand the heating effect of the contaminated soil in different areas and provide a reliable basis for subsequent operations. The grid acquisition module grids the distribution area of ​​the contaminated soil, making the processing and analysis of temperature data more systematic and efficient. Through grid management, the temperature changes of the contaminated soil in each small area can be more carefully grasped, thereby improving the overall heating efficiency.

[0108] The first heating state coefficient acquisition module uses the temperature average value and heating temperature of the grid area and other information to calculate the heating state coefficient through a specific formula. This coefficient can scientifically reflect the heating effect of the current contaminated soil. This quantitative evaluation method helps to more accurately determine whether the heating has achieved the expected effect. When the heating state coefficient is lower than the preset threshold, the temperature adjustment module will automatically adjust the heating temperature of the heating equipment. This automatic adjustment mechanism can ensure that timely measures are taken when the heating effect is not good, improve heating efficiency, and reduce energy waste. Through the second temperature value detection module, the second heating state coefficient acquisition module and the second comparison module, the system can evaluate the heating effect again after the heating temperature is adjusted. If the heating state coefficient is still lower than the preset threshold, the abnormal judgment module will trigger an abnormal alarm, indicating that there is an abnormality in the heating process. This abnormal detection and alarm mechanism helps to discover and solve problems in a timely manner and avoid serious failures in the heating process.

[0109] The entire technical solution significantly improves the efficiency and safety of contaminated soil heating treatment through accurate monitoring, scientific evaluation, flexible adjustment, and effective abnormality detection and alarm. This not only helps to reduce treatment costs and time, but also better protects the environment and human health.

[0110] Specifically, the temperature adjustment module includes:

[0111] A heating temperature extraction module is used to extract the heating temperature of the current heating device;

[0112] A heating state coefficient extraction module is used to extract the current heating state coefficient;

[0113] A coefficient difference acquisition module, used to acquire the difference between the heating state coefficient and a preset heating state coefficient threshold according to the current heating state coefficient;

[0114] A heating temperature adjustment module is used to adjust the heating temperature of the current heating device according to the difference between the heating state coefficient and a preset heating state coefficient threshold value, and obtain the adjusted heating temperature; wherein the adjusted heating temperature is obtained by the following formula:

[0115] ;

[0116] Among them, T mt Indicates the adjusted heating temperature; W indicates the heating state coefficient; W y represents the preset heating state coefficient threshold; ΔT represents the temperature compensation amount; n represents the total number of grids contained in the grid area corresponding to the contaminated soil distribution area; T i represents the temperature value corresponding to the temperature distribution state of the contaminated soil corresponding to the i-th grid; T m Indicates the heating temperature corresponding to the heating equipment; s max Indicates the preset maximum allowable temperature standard deviation; s m It represents the temperature standard deviation of the grids other than the m grids spanned by the straight-line distance between the grid corresponding to the maximum temperature value and the grid corresponding to the minimum temperature value, and e is the exponential base.

[0117] The technical effect of the above technical solution is: the module can extract the heating temperature and heating state coefficient of the current heating equipment in real time, and dynamically adjust the heating temperature according to these real-time data. This dynamic adaptability ensures that the heating process can quickly respond to changes in the temperature distribution of contaminated soil, thereby improving the heating efficiency and effect. Through the coefficient difference acquisition module, the difference between the current heating state coefficient and the preset threshold can be accurately calculated. This difference directly reflects the gap between the current heating effect and the expected effect, and provides an accurate basis for subsequent heating temperature adjustments. The heating temperature adjustment module calculates the adjusted heating temperature based on this difference through a specific formula to ensure the accuracy of the adjustment.

[0118] The entire temperature adjustment process is intelligently controlled and can be completed automatically without human intervention. This not only reduces the burden on operators, but also improves the stability and reliability of the heating process. By dynamically adjusting the heating temperature, it can be ensured that the heating equipment always operates in the optimal working state. This helps to reduce energy waste, improve heating efficiency, and shorten the time required to treat contaminated soil. The adjusted heating temperature is more in line with the actual needs of the current temperature distribution of contaminated soil, which helps to achieve a more uniform and efficient heating effect. This helps to accelerate the decomposition and removal of pollutants and improve the effect of environmental treatment.

[0119] This module enhances the robustness of the entire system by introducing the concept of heating state coefficient and adjusting the temperature based on this coefficient. Even when the temperature distribution of contaminated soil changes significantly, the system can respond quickly and maintain a stable heating effect.

[0120] In this embodiment, by real-time monitoring of the equipment during the heating process, abnormal conditions such as equipment overheating and uneven heating can be discovered and handled in a timely manner, preventing equipment damage or safety accidents, ensuring the continuity and stability of the heating repair process, and improving the repair efficiency. Comparison with the heating repair plan helps to verify the implementation effect of the plan, and fine-tune or optimize the plan based on the comparison results to achieve better repair effects. The volatilization efficiency evaluation module can accurately evaluate the volatilization efficiency of pollutants, providing a scientific basis for evaluating the repair effect, helping to optimize the heating repair plan, and improving the volatilization efficiency of pollutants, thereby achieving better repair effects.

[0121] In this embodiment, the monitoring and evaluation unit includes:

[0122] The abnormal monitoring and early warning module is used to establish a timeline based on the heating time of the heating remediation plan, input the temperature prediction results of the contaminated soil into the timeline, and generate a predicted temperature curve. When the monitored contaminated soil temperature data exceeds the normal range, the early warning alarm mechanism is triggered, and the operator is reminded through sound and light alarms, SMS notifications, etc.;

[0123] The abnormal monitoring and early warning module is also used for:

[0124] Build a data interaction channel with the heating equipment supervision module and the volatilization efficiency evaluation module, and obtain equipment abnormality data and pollutant emission abnormality data in real time based on the data interaction channel;

[0125] Match the corresponding warning category according to the acquired abnormal data type, and build the corresponding warning level threshold according to the abnormal data type;

[0126] Compare each abnormal data with the corresponding warning level threshold, determine the warning level of each abnormal data, and match the corresponding warning information based on the warning level;

[0127] The remediation effect evaluation module is used to compare the actual contaminated soil data based on real-time monitoring with the remediation targets in the heating remediation plan, and evaluate the remediation effect of the contaminated soil based on the comparison results, including indicators such as pollutant removal rate and degree of improvement in contaminated soil quality;

[0128] The report generation module is used to generate a remediation report for the contaminated soil based on the actual contaminated soil data and assessment results monitored in real time. It comprehensively records the data, abnormal conditions, remediation effects and other information of the remediation process to ensure the accuracy and traceability of the remediation process.

[0129] In this embodiment, by constructing a timeline and inputting temperature prediction results, the contaminated soil temperature data is monitored in real time, and the early warning alarm mechanism is triggered when it exceeds the normal range, ensuring that the problem can be discovered and handled in a timely manner, avoiding potential safety hazards and a decline in the repair effect, matching the warning category and constructing the warning level threshold, accurately determining the warning level of the abnormal data, and matching the corresponding warning information, the accuracy and pertinence of the warning are improved, which helps operators to quickly respond to and handle abnormal situations. Through the evaluation of the repair effect, problems and deficiencies in the repair process are discovered in a timely manner, and the heating repair plan is optimized and adjusted to improve the repair efficiency and effect.

[0130] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A contaminated soil remediation system based on in-situ thermal desorption, characterized in that: include: A construction deployment unit is used to formulate a construction plan based on the actively uploaded contaminated soil remediation data and the acquired contaminated soil remediation data, and to determine the construction preparation and on-site deployment work of the contaminated soil remediation project; A heating remediation unit is used to determine the target pollutants in the contaminated soil based on the contaminated soil remediation data, heat the contaminated soil using an operation terminal deployed on site, and heat the contaminated soil to above the boiling point of the target pollutants based on the data characteristics of the target pollutants; Tailwater treatment and recycling unit, which is used to extract volatile pollutants from contaminated soil based on the on-site operation terminal, and recycle and safely discharge them after waste gas treatment; The monitoring and evaluation unit is used to collect and analyze the contaminated soil data in real time during the remediation process, monitor abnormal conditions during the remediation process, evaluate the remediation effect of the contaminated soil, and generate a remediation report; Heating repair unit, comprising: The heating equipment supervision module is used to monitor the equipment in the heating process in real time, compare the real-time monitored heating process data with the heating repair plan, and monitor and handle abnormal situations based on the comparison results; Safety protection module, used to set the safety temperature threshold of heating equipment, monitor potential danger sources, and formulate emergency plans; The volatilization efficiency evaluation module is used to monitor the concentration change index of pollutants in the exhaust gas, evaluate the volatilization efficiency of pollutants during the heating process by combining heating parameters, heating mode and heating time, and adjust the heating repair plan based on the evaluation results; Heating equipment supervision module, including: A first temperature value detection module is used to monitor in real time the temperature value of the temperature distribution state of the contaminated soil corresponding to the heating equipment; A grid acquisition module, used to perform grid processing on the contaminated soil distribution area of ​​the heating equipment, and obtain a grid area corresponding to the contaminated soil distribution area; The first heating state coefficient acquisition module is used to use the average temperature value corresponding to each grid area as a temperature value of the contaminated soil temperature distribution state, and obtain the heating state coefficient of the current contaminated soil according to the temperature values ​​of the multiple contaminated soil temperature distribution states corresponding to the grid area; wherein the heating state coefficient is obtained by the following formula: ； Where W represents the heating state coefficient; n represents the total number of grids contained in the grid area corresponding to the contaminated soil distribution area; T i represents the temperature value corresponding to the temperature distribution state of the contaminated soil corresponding to the i-th grid; T m represents the heating temperature corresponding to the heating device; m represents the number of grids spanned by the straight-line distance between the grid corresponding to the maximum temperature value and the grid corresponding to the minimum temperature value; T j represents the temperature value corresponding to the jth grid; T z represents the middle value of the temperature value corresponding to the grids other than the m grids spanned by the straight-line distance between the grid corresponding to the maximum temperature value and the grid corresponding to the minimum temperature value; α represents the preset temperature consistency weight factor, and its value range is [0,1]; γ represents the preset temperature gradient weight factor, and its value range is [0,1]; τ represents the preset tolerance value of the temperature deviation between the temperature of the ith grid and the temperature of the nearby grids used to define the grid area, and its value range is [1.2,1.8]; T p represents the average value of the grids contained in the grid area corresponding to the distribution area of ​​contaminated soil; s represents the standard deviation of the actual temperature corresponding to n grids; s max Indicates the preset maximum allowable temperature standard deviation; a first comparison module, configured to compare the heating state coefficient with a preset heating state coefficient threshold; A temperature adjustment module, used for adjusting the heating temperature of the heating device when the heating state coefficient is lower than a preset heating state coefficient threshold; A second temperature value detection module is used to monitor and extract the temperature value of the temperature distribution state of the contaminated soil again after the preset time period after the heating temperature is adjusted; A second heating state coefficient acquisition module is used to obtain a heating state coefficient by using the temperature value of the temperature distribution state of the contaminated soil extracted again; a second comparison module, configured to perform a secondary comparison between the heating state coefficient and a preset heating state coefficient threshold; An abnormality judgment module is used for, when the heating state coefficient is still lower than the preset heating state coefficient threshold value in the second comparison, the heating process has an abnormality and an abnormality alarm is issued; Temperature adjustment module, including: A heating temperature extraction module is used to extract the heating temperature of the current heating device; A heating state coefficient extraction module is used to extract the current heating state coefficient; A coefficient difference acquisition module, used to acquire the difference between the heating state coefficient and a preset heating state coefficient threshold according to the current heating state coefficient; A heating temperature adjustment module is used to adjust the heating temperature of the current heating device according to the difference between the heating state coefficient and a preset heating state coefficient threshold value, and obtain the adjusted heating temperature; wherein the adjusted heating temperature is obtained by the following formula: ； Among them, T mt Indicates the adjusted heating temperature; W indicates the heating state coefficient; W y represents the preset heating state coefficient threshold; ΔT represents the temperature compensation amount; n represents the total number of grids contained in the grid area corresponding to the contaminated soil distribution area; T i represents the temperature value corresponding to the temperature distribution state of the contaminated soil corresponding to the i-th grid; T m Indicates the heating temperature corresponding to the heating equipment; s max Indicates the preset maximum allowable temperature standard deviation; s m It represents the temperature standard deviation of the grids other than the m grids spanned by the straight-line distance between the grid corresponding to the maximum temperature value and the grid corresponding to the minimum temperature value, and e is the exponential base.

2. The contaminated soil remediation system based on in-situ thermal desorption according to claim 1, characterized in that: The construction deployment unit comprises: The construction data acquisition module is used to collect and analyze the contaminated soil remediation data related to the contaminated soil remediation project, and integrate the contaminated soil remediation data to generate construction data; The construction plan design module is used to formulate a construction plan for contaminated soil remediation based on construction data, determine the layout and laying route of each operation terminal, and the location and number of each operation terminal; The construction plan evaluation module is used to conduct a comprehensive evaluation of the construction plan, compare the comprehensive evaluation score with the preset plan evaluation threshold, determine the construction plan to be implemented, and generate a construction plan evaluation report; The construction plan implementation module is used to build a site implementation management plan based on the determined construction plan, and to implement the site implementation management plan and deploy various operation terminals.

3. The contaminated soil remediation system based on in-situ thermal desorption according to claim 2, characterized in that: The heating repair unit also includes: A heating remediation plan formulation module is used to formulate a heating remediation plan based on the determined construction plan and the acquired contaminated soil remediation data, including heating method, heating temperature range, heating time, heating rate and heating mode; Heating parameter adjustment module, used for: Analyze the developed heating remediation plan, extract characteristic data of contaminated soil, and determine the pollutant types of target pollutants in the contaminated soil; Determining heating parameters of the heating source based on characteristic data of the contaminated soil and target pollutant characteristics corresponding to the pollutant type, and the operation terminal heating the contaminated soil based on the heating parameters; The heating mode switching module is used to collect the temperature data of the contaminated soil in real time based on the temperature sensor, and match the corresponding heating mode according to the heating remediation plan and the contaminated soil temperature data obtained in real time.

4. The contaminated soil remediation system based on in-situ thermal desorption according to claim 3, characterized in that: The heating repair plan formulation module formulates a heating repair plan, specifically: Acquire data on contaminated soil, including the types, concentrations, distribution ranges of pollutants, and the physical and chemical properties of contaminated soil, clarify remediation goals, and determine the expected pollutant removal rates and contaminated soil quality standards; Setting heating parameter thresholds, heating time and heating rate according to the data acquisition and remediation objectives of the contaminated soil, and predicting the temperature of the contaminated soil according to the set heating parameter thresholds, heating time and heating rate; According to the distribution range of pollutants and temperature prediction results, a heating mode is formulated, including preheating mode, high power mode and insulation mode, and the time nodes of each heating mode are determined.

5. The contaminated soil remediation system based on in-situ thermal desorption according to claim 4, characterized in that: The volatilization efficiency evaluation module evaluates the volatilization efficiency of pollutants during the heating process, specifically including: Determine initial parameters of the heating repair scheme, including heating power, heating temperature and heating time, and obtain initial concentration data of pollutants based on the initial parameters of the heating repair scheme; Calculate the difference between the initial concentration data and the final concentration data of pollutants in the exhaust gas before and after heating to determine the reduction in pollutant concentration; The total amount of volatilized pollutants is obtained by combining the exhaust gas flow rate and the heating time, and the volatilization efficiency of the pollutants is obtained based on the total amount of volatilized pollutants.

6. The contaminated soil remediation system based on in-situ thermal desorption according to claim 5, characterized in that: Monitoring and evaluation unit, including: The abnormal monitoring and early warning module is used to establish a time axis based on the heating time of the heating remediation plan, input the temperature prediction results of the contaminated soil into the time axis, generate a predicted temperature curve, and trigger the early warning alarm mechanism when the monitored contaminated soil temperature data exceeds the normal range; The remediation effect evaluation module is used to compare the actual contaminated soil data based on real-time monitoring with the remediation targets in the heating remediation plan, and evaluate the remediation effect of the contaminated soil based on the comparison results; The report generation module is used to generate a remediation report for the contaminated soil based on the actual contaminated soil data and assessment results monitored in real time.

7. The contaminated soil remediation system based on in-situ thermal desorption according to claim 4, characterized in that: The abnormal monitoring and early warning module is also used for: Build a data interaction channel with the heating equipment supervision module and the volatilization efficiency evaluation module, and obtain equipment abnormality data and pollutant emission abnormality data in real time based on the data interaction channel; Match the corresponding warning category according to the acquired abnormal data type, and build the corresponding warning level threshold according to the abnormal data type; Each abnormal data is compared with the corresponding warning level threshold, the warning level of each abnormal data is determined, and the corresponding warning information is matched based on the warning level.

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