System and method for measuring cross-medium transmission blocking effect of gas-soil interface

Abstract

The invention provides a gas-soil interface cross-medium transmission blocking effect determination system and method, and relates to the field of pollutant cross-medium transmission blocking. The measuring system comprises a first container, an enriching device, a humidifying device, a heating device, a light supplementing device, a ventilating device and a control device, the first container is used for accommodating to-be-detected soil; the enrichment device is used for collecting pollutants volatilized from the soil to be detected; the humidifying device is used for increasing the humidity of the soil to be measured; the heating device is used for increasing the temperature of the to-be-measured soil; the light supplementing device is used for verifying a plant resistance and control technology and promoting plant growth; the ventilation device controls circulation of air in the first container; the control device controls the temperature and humidity in the first container and the illumination intensity and the air circulation rate in the first container. According to the invention, real and stable meteorological environment conditions are provided under experimental conditions, and the problem of insufficient monitoring and evaluation of cross-medium transmission and conversion processes of gas-soil interface characteristic pollutants in the prior art is solved.

Description

Technical Field

[0001] This invention belongs to the technical field of blocking cross-media transport of pollutants, and in particular relates to a system and method for measuring the effectiveness of cross-media transport blocking at the air-soil interface. Background Technology

[0002] With the rapid advancement of urbanization and industrialization, heavy industries such as steel, non-ferrous metals, and chemicals have formed a series of industrial clusters in urban areas. Various pollutants from these industrial clusters, through direct emissions, secondary formation, and cross-media transport, have become key sources of air, soil, and groundwater pollution. The emitted pollutants are widely distributed, have complex sources, and are diverse in type, posing a severe threat to regional environmental quality and ecological security. The solution to this situation lies in the comprehensive prevention and control of multi-media complex pollution, the core of which is the efficient blocking of cross-media transport of pollutants.

[0003] Volatile organic compounds (VOCs) and semi-volatile organic compounds (SVOCs), such as benzene compounds and polycyclic aromatic hydrocarbons, are characteristic pollutants in industrial clusters and can persist in environmental media (air, water, and soil) for extended periods. Due to their high volatility at room temperature, they can migrate through air-soil, air-water, and soil-water interfaces. Common remediation methods for these pollutants typically employ adsorption, catalytic oxidation, solidification stabilization, and redox techniques within a single medium (atmospheric, soil, or aquatic environment). However, at air-soil interfaces, these pollutants can migrate and transform across media. Remediation technologies and methods used in single-medium environments often exhibit only superficial compliance, making it difficult to guarantee the long-term effectiveness of remediation efforts.

[0004] Before implementing multi-media integrated pollution control and cross-media transport blocking technologies in engineering, it is necessary to evaluate the effectiveness of these technologies in treating characteristic pollutants. Research and analysis reveal that current monitoring and detection methods for the treatment of characteristic pollutants such as VOCs and SVOCs are only applicable to single-media conditions of air or soil. For example, when using adsorption degradation to treat VOCs and SVOCs in soil, gas chromatography or liquid chromatography are typically used to evaluate the treatment effect and analyze the concentration changes of VOCs and SVOCs in the soil before and after treatment. However, given the unique outdoor open environment of the atmosphere-soil interface, this method cannot quantitatively analyze the migration and transformation of VOCs and SVOCs in the air-soil medium during treatment (e.g., characteristic pollutants in the air may settle or be adsorbed into the soil, or characteristic pollutants in the soil may re-evaporate and volatilize back into the air, both of which can lead to distorted final treatment data). In other words, it cannot accurately evaluate the treatment effect and long-term effectiveness of the selected air-soil interface cross-media transport blocking technology. Summary of the Invention

[0005] In view of this, the present invention provides a system for measuring the blocking effect of cross-media transport at the air-soil interface, in order to solve the problem of insufficient monitoring and evaluation of the cross-media transport and transformation process of characteristic pollutants at the air-soil interface in the prior art.

[0006] The technical solution of this invention is implemented as follows:

[0007] This invention provides a system for measuring the trans-media transport blocking effect at the air-soil interface, comprising: a first container for containing soil to be tested; an enrichment device connected to the interior of the first container to collect pollutants volatilized from the soil to be tested; a humidification device connected to the first container to increase the humidity of the soil to be tested; a heating device connected to the first container to increase the temperature of the soil to be tested; a supplementary lighting device including a supplementary light lamp disposed inside the first container; plants cultivated in the soil to be tested for absorbing pollutants from the soil to be tested and the first container to block the migration of pollutants at the air-soil interface; the supplementary light lamp simulating sunlight to provide supplementary lighting for the plants to promote plant growth and verify the blocking effect of the plants; a ventilation device connected to the first container to increase the air circulation rate within the first container; and a control device connected to the humidification device, the heating device, the supplementary lighting device, and the ventilation device to control the temperature, humidity, light intensity, and air circulation rate within the first container.

[0008] In one embodiment, the humidification device includes: a room temperature water tank disposed outside the first container; and a first water pipe connected between the room temperature water tank and the first container, wherein the first water pipe is used to introduce water from the room temperature water tank into the first container to increase the humidity of the soil to be tested.

[0009] In one embodiment, a partition with multiple drainage holes is provided inside the first container; the partition is spaced apart from the bottom wall of the first container to form an interval space; the soil to be tested is located above the partition; the heating device includes a constant temperature water tank and a second water pipe, the constant temperature water tank is located outside the first container, and the second water pipe connects the constant temperature water tank and the interval space, the second water pipe is used to introduce water from the constant temperature water tank into the interval space to increase the temperature and humidity of the soil to be tested.

[0010] In one embodiment, a second container with an open top is also included, the second container being disposed on the partition, the interior of the second container being used to hold the soil to be tested; the second container is provided with a handle to facilitate placing the second container on the partition of the first container, and to facilitate removing the second container from the partition inside the first container.

[0011] In one embodiment, multiple second containers are provided, wherein: the soil samples in the multiple second containers are configured with the same contaminant; and / or, at least two of the soil samples in the multiple second containers are configured with different contaminants.

[0012] In one embodiment, the enrichment device includes: an enrichment bottle containing a solution capable of chemically reacting with pollutants volatilized from the soil to be tested; and a suction pipe connected between the first container and the gas collection bottle; wherein the suction pipe is equipped with a gas pump to pump gas from the first container into the enrichment bottle, so that the pollutants volatilized from the soil to be tested can fully contact the solution and undergo a chemical reaction.

[0013] In one embodiment, the control device includes a temperature sensor, a humidity sensor, and a controller; the temperature sensor and the humidity sensor are respectively disposed in the first container for real-time monitoring of the temperature and humidity of the soil to be tested; the controller adjusts the working state of the humidification device and the heating device according to the monitoring data of the temperature sensor and the humidity sensor to maintain the temperature and humidity of the soil to be tested within a preset range.

[0014] This invention also provides another system for measuring the blocking effect of air-soil interface cross-media transport, comprising: a first container for containing clean soil; an enrichment device connected to the interior of the first container to collect pollutant gases within the first container; a humidification device connected to the first container to increase the humidity of the soil; a heating device connected to the first container to increase the temperature of the soil; a supplementary lighting device including a supplementary light lamp disposed within the first container; the soil to be tested is planted with plants; the supplementary light lamp simulates sunlight and is used to supplement the light for the plants; a pollutant gas source device connected to the first container to introduce pollutants into the first container; and a control device connected to the humidification device, the heating device, the supplementary lighting device, and the pollutant gas source device to control the temperature, humidity, light intensity, and air circulation rate within the first container.

[0015] This invention also provides a method for determining the blocking effect of air-soil inter-medium transport, based on an air-soil inter-medium transport blocking effect determination system. The system includes: a first container for containing soil to be tested; an enrichment device connected to the interior of the first container to collect pollutants volatilized from the soil; a humidification device connected to the first container to increase the humidity of the soil; a heating device connected to the first container to increase the temperature of the soil; and a supplementary lighting device, including a supplementary light. A supplemental light is installed inside the first container; the soil to be tested is planted with plants to absorb pollutants from the soil and the first container, thereby controlling the migration of pollutants at the air-soil interface; the supplemental light simulates sunlight and is used to supplement the light for the plants, thereby promoting their growth and verifying their pollution control effect; a ventilation device is connected to the first container to increase the air circulation rate within the first container; a control device is connected to the humidification device, the heating device, the supplemental light device, and the ventilation device to control the temperature, humidity, light intensity, and air circulation rate of the soil to be tested.

[0016] The method for determining the trans-medium transport blocking effect at the air-soil interface includes the following steps: S1, preparing multiple soil samples, each containing the same proportion of toluene contaminant; S2, spraying each soil sample with a different proportion of trans-medium transport blocking agent, and placing each soil sample in the first container of the measurement system accordingly; S3, using a control device to control the heating device, the humidification device, and the supplementary light to control the temperature, humidity, and light intensity of the soil in each of the first containers; S4, after a set experimental period, detecting the contaminant content in each enrichment device; S5, based on the detected contaminant content, determining the trans-medium transport blocking effect of each sample from soil to gas under the corresponding temperature, humidity, and light conditions.

[0017] In one embodiment, step S3 specifically includes: S31, setting different temperature, humidity and light parameters to simulate various environmental conditions; S32, the control device automatically adjusts the output power of the heating device, the water flow rate of the humidifying device, and the light intensity and time of the supplementary light lamp according to the different set temperature, humidity and light parameters, as well as the weight of each soil sample, so as to achieve gradient changes in soil temperature, humidity and light.

[0018] In one embodiment, step S32 specifically includes: S321, the control device monitors the soil temperature, humidity and pollutant content in real time and feeds back the monitoring data; S322, the control device dynamically adjusts the working status of the heating device and humidification device, as well as the light intensity and duration of the supplementary lighting, based on the monitoring data.

[0019] In one embodiment, step S4 specifically includes: S41, after a set experimental period, extracting samples from each enrichment device and quantitatively analyzing the pollutant concentration in the samples using a gas chromatograph or mass spectrometer; S42, evaluating the differences in the effectiveness of the transmedia transport blocking agent under various environmental parameters by comparing the changes in pollutant concentration under different conditions; S43, recording the final humidity, temperature, and light conditions of the soil in each first container to further analyze the specific impact of these factors on the blocking effect.

[0020] This invention also provides another method for determining the blocking effect of air-soil inter-medium transport, based on an air-soil inter-medium transport blocking effect determination system. The system includes a first container for containing clean soil; an enrichment device connected to the interior of the first container to collect pollutant gases within the first container; a humidification device connected to the first container to increase the humidity of the soil; a heating device connected to the first container to increase the temperature of the soil; a supplementary lighting device including a supplementary light lamp disposed within the first container; plants are cultivated in the soil to be tested; the supplementary light lamp simulates sunlight and is used to supplement the light for the plants; a pollutant gas source device connected to the first container to introduce pollutants into the first container; and a control device connected to the humidification device and the supplementary lighting device. The heating device, supplementary lighting device, and pollutant gas source device are connected to control the temperature, humidity, light intensity, and air circulation rate inside the first container. The method for determining the gas-soil interface cross-medium transport blocking effect includes the following steps: S1', preparing multiple clean soil samples; S2, spraying different proportions of cross-medium transport blocking agents onto each soil sample, and placing each soil sample into the first container of the measurement system accordingly; S3, using a control device to control the heating device, the humidification device, and the supplementary lighting to control the temperature, humidity, and light intensity of the soil in each first container; S4, after a set experimental cycle, detecting the pollutant content in each enrichment device; S5', based on the detected pollutant content and the remaining pollutant amount in the pollutant gas source device, determining the blocking effect of each cross-medium transport blocking agent from gas to soil under different temperatures, humidity levels, and light conditions.

[0021] This invention provides a system for measuring the trans-medium transport blocking effect at the air-soil interface. The system includes a first container for holding soil to be tested; an enrichment device connected to the interior of the first container to collect pollutants emitted from the soil; a humidification device connected to the first container to increase the humidity of the soil; a heating device connected to the first container to increase the temperature of the soil; a supplementary lighting device including a supplementary light lamp disposed inside the first container; plants cultivated in the soil to absorb pollutants from the soil and the first container, thereby blocking the migration of pollutants at the air-soil interface; the supplementary light lamp simulating sunlight to provide supplemental lighting for the plants, promoting plant growth and verifying the plant's blocking effect; a ventilation device connected to the first container to increase the air circulation rate within the first container; and a control device connected to the humidification device, heating device, supplementary lighting device, and ventilation device to control the temperature, humidity, light intensity, and air circulation rate within the first container. This invention, by adjusting the operating states of the heating and humidifying devices through a control device, can provide realistic and stable meteorological environmental conditions under experimental conditions, enabling the simulation and quantitative analysis of pollutant migration behavior under various environmental conditions. It solves the problem of insufficient monitoring and assessment of the cross-media transport and transformation processes of characteristic pollutants at the air-soil interface in existing technologies. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0023] Figure 1 This is an overall schematic diagram of an embodiment of the air-soil interface cross-medium transport blocking effect measurement system provided by the present invention.

[0024] Figure 2 A schematic diagram of another embodiment of the air-soil interface transmedia transport blocking effect measurement system provided by the present invention;

[0025] Figure 3 A flowchart of an embodiment of the method for determining the blocking effect of cross-medium transport at the air-soil interface provided by the present invention;

[0026] Figure 4 A flowchart of step S3 in the method for determining the blocking effect of cross-medium transport at the air-soil interface provided by the present invention.

[0027] Figure 5A flowchart of step S32 of the method for determining the blocking effect of cross-medium transport at the air-soil interface provided by the present invention;

[0028] Figure 6 A flowchart of step S4 in the method for determining the blocking effect of cross-medium transport at the air-soil interface provided by the present invention.

[0029] Figure 7 This is an overall flowchart of another embodiment of the method for determining the blocking effect of air-soil interface cross-medium transport provided by the present invention.

[0030] Explanation of reference numerals in the attached figures:

[0031] 1. First container; 11. Partition; 12. Spacer; 13. Sealing buckle; 14. Air inlet; 2. Enrichment device; 21. Enrichment bottle; 22. Suction pipe; 23. Air pump; 3. Humidification device; 31. Room temperature water tank; 32. First water pipe; 321. Nozzle; 33. Room temperature water pump; 4. Heating device; 41. Constant temperature water tank; 42. Second water pipe; 43. Constant temperature water pump; 5. Control device; 51. Temperature and humidity sensor; 52. Airflow detector; 53. Controller; 6. Beads; 7. Supplemental light; 8. Second container; 81. Handle; 9. Pollutant gas source device. Detailed Implementation

[0032] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0033] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0034] Furthermore, if the embodiments of this invention involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0035] With the rapid advancement of urbanization and industrialization, heavy industries such as steel, non-ferrous metals, and chemicals have formed industrial clusters in urban agglomerations. Their various pollutants, through direct emissions and other pathways, have become key sources of air, soil, and groundwater pollution. These pollutants are widely distributed, have complex sources, and are diverse in type, threatening regional environmental quality and ecological security. Improving this situation requires comprehensive control of multi-media complex pollution, with the core being the blocking of cross-media transport of pollutants. Characteristic pollutants such as volatile organic compounds (VOCs) and semi-volatile organic compounds (SVOCs) in industrial clusters can persist in environmental media for extended periods, are easily volatilized at room temperature, and can migrate across interfaces. Common treatment methods involve using adsorption and other technologies to treat pollutants in a single medium. However, in the context of the air-soil interface, single-medium treatment technologies cannot guarantee long-term effectiveness. Before implementing engineering applications of multi-media pollution comprehensive control and cross-media transport blocking technologies, it is necessary to assess their effectiveness in treating characteristic pollutants. Currently, monitoring and detection methods for the treatment effects of characteristic pollutants such as VOCs and SVOCs are only applicable to single media. When treating such pollutants in soil, gas chromatography and other detection methods are used to analyze the changes in concentration before and after treatment. However, due to the open outdoor environment of the air-soil interface, it is impossible to quantitatively analyze the migration and transformation of pollutants in the air-soil medium, and it is impossible to accurately evaluate the treatment effect and long-term effectiveness of the air-soil interface cross-media transport blocking technology.

[0036] In view of this, the present invention provides a system for measuring the blocking effect of cross-media transport at the air-soil interface, in order to solve the problem of insufficient monitoring and evaluation of the cross-media transport and transformation process of characteristic pollutants at the air-soil interface in the prior art.

[0037] Please see Figure 1The system for measuring the transmedia transport blocking effect at the air-soil interface includes a first container 1, a humidification device 3, a heating device 4, and a control device 5. The first container 1 contains the soil to be tested and is equipped with the heating device 4 to simulate different temperature conditions. The humidification device 3 is connected to the first container 1 and is used to regulate the humidity inside the container, thereby achieving precise control of the air-soil interface environment. The control device 5 coordinates the operation of the heating device 4 and the humidification device 3 to ensure the stability and repeatability of the experimental conditions. In addition, the system is equipped with an enrichment device 2 to collect characteristic pollutants that volatilize or migrate from the soil for subsequent analysis. Through the coordinated operation of these components, the system can effectively simulate the actual environmental conditions at the air-soil interface and quantitatively evaluate the transmedia transport blocking effect.

[0038] The first container 1 features a detachable top design, which is achieved through a sealing buckle 13 to seal the detachable part. The heating device 4 employs a multi-segment temperature control design, enabling gradient temperature changes according to experimental requirements, thus simulating ambient temperatures under different climatic conditions. The humidification device 3 uses a water vapor delivery system to control humidity within a set range and supports dynamic adjustment to meet the experimental requirements for humidity variations. The control device 5 incorporates an intelligent algorithm that can collect and analyze experimental data in real time and automatically adjust the heating and humidification states according to preset parameters, ensuring consistent experimental conditions. Furthermore, the enrichment device 2 utilizes highly efficient adsorption materials, allowing for selective enrichment of different types of characteristic pollutants, improving the sensitivity and accuracy of subsequent detection. The entire system is compact, easy to operate, and highly expandable, allowing for the addition of other functional modules, such as light intensity adjustment or gas flow rate control, to further enrich the diversity of experimental conditions.

[0039] To optimize the simulation of experimental conditions, a supplementary lighting device was added. Specifically, the supplementary lighting device includes a supplementary light lamp 7, which is placed inside the first container 1. Plants are cultivated in the soil to be tested to absorb pollutants in the soil and the first container 1, thereby controlling the migration of pollutants at the air-soil interface. The supplementary light lamp 7 simulates sunlight and is used to supplement the light for the plants, thereby promoting plant growth and verifying the plant's control effect.

[0040] To further optimize the simulation of experimental conditions, the supplemental light lamp 7 is designed with adjustable light intensity and photoperiod. This design allows for flexible adjustment of light parameters according to the different growth needs of plants and experimental objectives, thereby more realistically reproducing light changes in the natural environment. Furthermore, the supplemental light lamp 7 uses an LED light source that closely approximates the natural light spectrum to ensure that the photosynthetic efficiency of plants is not interfered with by artificial light sources, while also avoiding the impact of light source differences on experimental results.

[0041] During the experiment, the control device 5 dynamically adjusts the operating mode of the supplemental lighting 7 based on real-time monitoring of soil moisture, temperature, and plant growth status. For example, under conditions of low soil moisture or high temperature, the system may appropriately extend the supplemental lighting time to compensate for the reduced photosynthesis caused by environmental stress. Simultaneously, the control device 5 records data on changes in light intensity and time, providing comprehensive experimental evidence for subsequent analysis.

[0042] To further enhance the system's functionality, a ventilation device was added. This module includes an airflow regulating valve, which is connected to the control device 5. The first container 1 has an air inlet 14 that connects to the outside atmosphere to simulate the natural environment, thus creating a controllable gas flow environment inside the first container 1. By adjusting the gas flow rate and direction, the impact of wind speed on the migration of pollutants at the air-soil interface in the natural environment can be simulated, thereby more closely resembling the actual scenario.

[0043] Therefore, by constructing the aforementioned air-soil interface cross-media transport blocking effect measurement system, this invention enables the simulation and quantitative analysis of pollutant migration behavior under various environmental conditions. It solves the problem of insufficient monitoring and assessment of the cross-media transport and transformation processes of characteristic pollutants at the air-soil interface in existing technologies.

[0044] This invention, through the introduction of plants and supplemental lighting (7), enables the system to not only study the transmedia transport behavior of pollutants at the air-soil interface but also to further explore the role of plants in the pollution remediation process. For example, by comparing experimental results under conditions with and without plants, the effectiveness of plants in pollutant absorption, degradation, and blocking can be evaluated.

[0045] In some embodiments, please refer to Figure 1 To humidify the soil to be tested, a room temperature water tank 31 and a first water pipe 32 are used. Specifically, the humidification device 3 includes a room temperature water tank 31 and a first water pipe 32; the room temperature water tank 31 is respectively disposed outside the first container 1; the first water pipe 32 is connected between the room temperature water tank 31 and the first container 1, and the first water pipe 32 is used to introduce water from the room temperature water tank 31 into the first container 1 to increase the humidity of the soil to be tested.

[0046] A flow control valve is installed on the first water pipe 32 to regulate the water flow rate and humidification amount. The ambient temperature water tank 31 is equipped with a water filtration device to ensure that the water introduced into the first container 1 does not contain impurities or contaminants that could interfere with the experimental results. Furthermore, the ambient temperature water tank 31 is designed with a liquid level monitoring function; when the water level falls below a set threshold, the system will automatically issue an alarm to prompt the replenishment of water, thereby preventing experimental interruptions or data deviations due to water shortage.

[0047] Of course, a normal temperature water pump 33 can be installed on the first water pipe 32 to achieve stable water delivery and pressure regulation, and ensure the uniformity and controllability of the humidification process.

[0048] To further improve the accuracy of humidity control, the humidifier 3 can also be linked with the control device 5. By collecting humidity data in the first container 1 in real time, the control device 5 can automatically start and stop the humidification function according to the preset humidity range and dynamically adjust the opening of the flow control valve. This intelligent humidity control method not only improves the stability of experimental conditions but also significantly reduces the need for manual intervention, making the experimental process more efficient and reliable.

[0049] To facilitate the uniform spraying of water from the first water pipe 32 onto the soil to be tested, multiple nozzles 321 can be installed at the end of the first water pipe 32 that extends into the first container 1. These nozzles 321 are evenly distributed above the soil to ensure that the water can be evenly covered on the entire soil surface in a mist form. The nozzles 321 are designed with adjustable angle and spray range to adapt to the humidification needs under different experimental conditions.

[0050] In some embodiments, please refer to Figure 1 To heat the soil to be tested, a second water tank and a second water pipe 42 are used. Specifically, a partition 11 with multiple drainage holes is provided inside the first container 1; the partition 11 is spaced apart from the bottom wall of the first container 1 to form an interval space 12; the soil to be tested is located above the partition 11; the heating device 4 includes a constant temperature water tank 41 and a second water pipe 42. The constant temperature water tank 41 is located outside the first container 1, and the second water pipe 42 connects the constant temperature water tank 41 and the interval space 12. The second water pipe 42 is used to introduce water from the constant temperature water tank 41 into the interval space 12 to increase the temperature and humidity of the soil to be tested.

[0051] The partition 11 is made of high-temperature and corrosion-resistant material to maintain stable performance under different experimental conditions. The constant-temperature water tank 41 has a built-in temperature sensor and heating element to control the water temperature and support long-term stable operation. The second water pipe 42 is equipped with a flow regulation device, which can flexibly adjust the hot water flow rate according to experimental needs, thereby simulating the gradient change of soil temperature.

[0052] Of course, a constant temperature water pump 43 can be installed on the second water pipe 42 to achieve stable water delivery and pressure regulation, and ensure the uniformity and controllability of the heating process.

[0053] In some embodiments, please refer to Figure 1To facilitate the placement of the soil sample into the first container and to enable the reuse of the first container 1, a second container 8 is added inside the first container 1. Specifically, the top of the second container 8 is open, the second container 8 is mounted on a partition 11, and the interior of the second container 8 is used to hold the soil sample. The second container 8 is provided with a handle 81 to facilitate placing the second container 8 on the partition 11 of the first container 1 and to facilitate removing the second container 8 from the partition 11 inside the first container 1.

[0054] The second container 8 features a lightweight design, facilitating loading and unloading during experiments. Its material possesses excellent corrosion resistance and thermal insulation properties, effectively preventing interference from the external environment. Furthermore, the inner wall of the second container 8 undergoes special treatment to reduce the adhesion of soil particles to its surface, ensuring the complete removal of the soil sample after the experiment and preventing residues from affecting the accuracy of subsequent experiments.

[0055] In some embodiments, multiple second containers 8 are provided, wherein: the soil samples in the multiple second containers 8 are configured with the same contaminant; and / or, at least two of the soil samples in the multiple second containers are configured with different contaminants.

[0056] The contaminants can be varied, such as benzene, toluene, and 1,1,1-trichloroethane. Even when these three contaminants are mixed together in the enrichment device, their individual concentrations can be determined by chromatography.

[0057] For example, in one experimental group, all the soil samples in the second container 8 were prepared with the same pollutant, such as benzene, to observe its migration patterns under specific environmental conditions; while in another experimental group, different second containers 8 were prepared with different pollutants such as benzene, toluene, and 1,1,1-trichloroethane to analyze the competitive migration mechanism and blocking effect in a multi-pollutant system.

[0058] In terms of data analysis, by comparing experimental data from multiple second containers 8, the migration characteristics of pollutants at the air-soil interface can be revealed more comprehensively. For example, when a pollutant exhibits a significant migration trend under specific conditions, the cause of this phenomenon can be further verified by adjusting the parameters of the humidification device 3 or the heating device 4.

[0059] In some embodiments, please refer to Figure 1 The enrichment device 2 includes an enrichment bottle 21 and an extraction pipe 22. The enrichment bottle 21 contains a solution that can chemically react with the pollutants volatilized from the soil to be tested. The extraction pipe 22 is connected between the first container 1 and the gas collection bottle. The extraction pipe 22 is equipped with an air pump 23 to pump the gas in the first container 1 into the enrichment bottle 21, so that the pollutants volatilized from the soil to be tested can fully contact the solution and undergo a chemical reaction.

[0060] In some embodiments, please refer to Figure 1 The control device 5 includes a temperature and humidity sensor 51, an airflow detector 52, and a controller 53. The temperature and humidity sensor 51 is installed inside the first container 1 to monitor the temperature and humidity of the soil to be tested in real time. The airflow detector 52 is installed on the first suction pipe 22 to monitor the gas flow rate and direction in real time. The controller 53 is connected to the temperature and humidity sensor 51, the airflow detector 52, and various actuators. It analyzes and processes the collected data through a built-in algorithm and automatically adjusts the working status of the heating device 4, the humidification device 3, and the enrichment device 2 according to the preset experimental conditions.

[0061] In practical applications, the multifunctional design of this measurement system makes it suitable for various research scenarios. For example, when evaluating the effectiveness of novel blocking materials, high-efficiency materials can be quickly screened by comparing the volatilization and migration pathways of pollutants under different experimental conditions. In long-term ecological restoration projects, the system can serve as a technical support tool to verify the feasibility of remediation solutions and identify areas for optimization.

[0062] This invention also provides another system for measuring the blocking effect of cross-medium transport at the air-soil interface. Please refer to [link / reference]. Figure 2 The difference between this system and the measurement system provided in the above embodiments is that the air inlet is connected not to a ventilation device, but to a pollutant gas source device 9. The pollutant gas source device 9 contains pollutant gas, and the soil to be tested contained in the second container 8 is clean soil (i.e., uncontaminated soil).

[0063] Specifically, the measurement system provided in this embodiment of the invention includes a first container, an enrichment device, a humidification device, a heating device, a supplemental lighting device, a pollutant gas source device, and a control device. The first container is used to contain clean soil; the enrichment device is connected to the interior of the first container to collect pollutant gas from within the first container; the humidification device is connected to the first container to increase soil humidity; the heating device is connected to the first container to increase soil temperature; the supplemental lighting device includes a supplemental light lamp disposed within the first container; plants are cultivated in the soil to be tested; the supplemental light lamp simulates sunlight and is used to supplement the light for the plants; the pollutant gas source device is connected to the first container to introduce pollutants into the first container; the control device is connected to the humidification device, the heating device, the supplemental lighting device, and the ventilation device to control the temperature, humidity, light intensity, and airflow rate within the first container.

[0064] The operating principle is as follows: A certain concentration of volatile organic pollutant gas is introduced into the first container, and specific environmental conditions such as ventilation, temperature, humidity, and light are selected to simulate the migration of pollutants from the atmosphere to the soil. During this process, uncontaminated soil is selected and pretreated using certain remediation techniques (such as surface spraying of microbial agents, setting up an activated carbon mixing layer, etc.). After the experimental period (e.g., 7 days, 15 days, which can be selected independently), soil samples are collected for pollutant concentration analysis. By comparing the measured pollutant concentration results, the effectiveness of the remediation technology in blocking transport can be evaluated. It should be noted that: when evaluating the blocking effect from soil to atmosphere, the pollutant concentration in the enrichment device is measured; when evaluating the blocking effect from atmosphere to soil, the pollutant concentration in the soil is measured.

[0065] The specific operating procedure is as follows: Before the experiment begins, all equipment must be calibrated and checked to ensure the normal operation of the system and the accuracy of the data. First, clean soil is placed in the second container 8, and the initial soil parameters, such as humidity, temperature, and weight, are recorded. Then, the concentration of pollutant gas in the pollutant gas source device 9 is configured according to the experimental requirements, and it is introduced into the first container 1 through the air inlet 14. During this process, the control device 5 monitors key parameters such as gas flow rate, humidity, and temperature in real time, and maintains the stability of the experimental environment by adjusting the working status of the ventilation device and the heating device 4.

[0066] During the experiment, different remediation techniques can be selected for intervention. For example, after spraying a specific microbial agent on the soil surface, the system automatically adjusts the nozzle 321 of the humidification device 3 to ensure that the agent is fully mixed with the soil and maintains suitable humidity conditions. At the same time, the supplemental lighting 7 can dynamically adjust the light intensity and duration according to the plant growth status, providing optimal environmental support for microbial activity or phytoremediation. If an activated carbon mixed layer is used as the blocking material, a uniformly thick layer of activated carbon needs to be laid on top of the partition 11 and replaced regularly to avoid saturation affecting the effect.

[0067] The pollutant gas source device 9 is activated to introduce volatile organic pollutant gas of a predetermined concentration. The environmental parameters required for the experiment, such as temperature, humidity, ventilation rate, and lighting conditions, are set via the control device 5. During the experiment, the system monitors and records changes in various environmental indicators in real time. Simultaneously, it dynamically adjusts the operating status of the heating device 4, humidification device 3, and ventilation module according to a preset algorithm to maintain the stability of the experimental conditions.

[0068] After the experimental period, the pollutant gas source device 9 was shut down, and the system operation was stopped. The solution was removed from the enrichment bottle, and the pollutant content in the enrichment bottle was determined using high-performance liquid chromatography (HPLC) or gas chromatography (GC). Then, the amount of pollutants released from the pollutant gas source device 9 was measured; subtracting the pollutant content in the enrichment bottle from the amount of pollutants released from the pollutant gas source device 9 yielded the amount of pollutants that entered the soil. Analysis of the collected soil samples further determined the distribution characteristics and migration depth of the pollutants in the soil. This data provides important evidence for evaluating the effectiveness of remediation technologies, such as determining the actual contribution rate of microbial agents to pollutant degradation or the efficiency of activated carbon mixed layers in adsorbing pollutants.

[0069] Ultimately, this measurement system can quantify not only the migration behavior and blocking effect of pollutants at the air-soil interface.

[0070] Furthermore, to verify the reliability of the experimental results, it is recommended to set up multiple parallel experiments and repeat the tests at different time periods. By comparing the consistency and deviation range of the data from each group, the experimental design can be further optimized, enhancing the scientific rigor and credibility of the research conclusions.

[0071] This invention also provides a method for determining the blocking effect of cross-medium transport at the air-soil interface. This method is based on the aforementioned system for determining the blocking effect of cross-medium transport at the air-soil interface. The system includes a first container, an enrichment device, a heating device, a supplementary lighting device, a ventilation device, and a control device. The first container holds the soil to be tested. The enrichment device is connected to the interior of the first container to collect pollutants volatilized from the soil. The humidification device is connected to the first container to increase the humidity of the soil. The heating device is connected to the first container to increase the temperature of the soil. The supplementary lighting device includes a supplementary light lamp, which is placed inside the first container. Plants are cultivated in the soil to absorb pollutants from the soil and the first container, thereby blocking the migration of pollutants at the air-soil interface. The supplementary light lamp simulates sunlight and is used to supplement the light for the plants, promoting plant growth and verifying the blocking effect of the plants. The ventilation device is connected to the first container to increase the airflow rate within the first container. The control device is connected to the humidification device, heating device, supplementary lighting device, and ventilation device to control the temperature, humidity, light intensity, and airflow rate within the first container.

[0072] Please see Figure 2 The method for determining the inter-medium transport blocking effect at the air-soil interface includes the following steps:

[0073] S1. Prepare multiple soil samples, each containing the same proportion of toluene contaminant. Place these soil samples separately into the first container of the assay system, ensuring that the filling height and density of each soil sample are consistent to minimize the influence of experimental variables on the results.

[0074] S2. Spray different proportions of the transmedia transport blocking agent onto each soil sample, and place each soil sample into the first container of the measurement system accordingly. During spraying, the amount and uniformity of the blocking agent must be strictly controlled to ensure consistency of experimental conditions. Simultaneously, record the specific proportion of the blocking agent in each soil sample and the application method, as important parameters for subsequent data analysis.

[0075] S3. A control device is used to regulate the heating, humidification, and supplemental lighting of the soil in each first container, controlling the temperature, humidity, and light intensity differently. During the experiment, the environmental conditions for each soil group are dynamically adjusted according to preset parameters. For example, when simulating a high-temperature and high-humidity environment, the heating and humidification devices work together to ensure that the temperature and humidity in the first container remain stable within the target range. Simultaneously, the supplemental lighting provides appropriate light intensity and frequency based on the plant growth needs, thus more realistically recreating the complex conditions of the natural environment. Furthermore, the control device collects environmental data from each container in real time and fine-tunes the experimental conditions using a built-in algorithm to ensure comparability and reliability of results across multiple experiments.

[0076] S4. After the set experimental period, the pollutant content in each enrichment device is measured. Gas chromatography-mass spectrometry (GC-MS) can be used for detection to ensure data sensitivity and accuracy. Simultaneously, the pollutant content for each experimental group is recorded, and its migration rate and blocking efficiency are calculated based on the initial amount of toluene added to the soil. This process can intuitively reflect the actual effect of different proportions of transmedia transport blocking agents, providing a basis for subsequent optimization of blocking materials.

[0077] S5. Based on the detected pollutant content, determine the transmedia transport blocking effect of each soil sample under corresponding temperature, humidity, and light conditions. By comparing the pollutant migration rate and blocking efficiency under different experimental conditions, the specific impact of factors such as temperature, humidity, and light on the transmedia transport blocking effect can be clarified. For example, under high temperature and high humidity conditions, some blocking materials may exhibit superior performance, while their effectiveness may significantly decrease in low temperature and low humidity environments. This differentiated analysis helps researchers gain a deeper understanding of the mechanism of action of blocking materials and provides a basis for environmental adaptability optimization in practical applications.

[0078] In some embodiments, please refer to Figure 3 To more realistically simulate the natural environment of soil, step S3 specifically includes:

[0079] S31. Set different temperature, humidity and light parameters to simulate various environmental conditions.

[0080] S32. The control device automatically adjusts the output power of the heating device, the water flow rate of the humidifying device, and the light intensity and time of the supplementary light lamp according to the set different temperature, humidity and light parameters, as well as the weight of each soil sample, so as to achieve gradient changes in soil temperature, humidity and light.

[0081] In this embodiment of the invention, the control device uses a built-in intelligent algorithm to monitor and adjust experimental conditions in real time, ensuring the stability of each soil group under different environmental parameters. For example, under simulated day-night alternation lighting conditions, the supplemental lighting will automatically start and stop according to a preset light cycle, while coordinating with changes in humidity and temperature to more closely resemble the dynamic characteristics of the natural environment. Furthermore, the system records changes in environmental parameters at each point in time, generating detailed data logs to provide comprehensive support for subsequent analysis.

[0082] In some embodiments, please refer to Figure 4 To improve the stability of temperature and humidity control, step S32 above has been optimized. Specifically, step S32 includes:

[0083] S321. The control device monitors the soil temperature, humidity and pollutant content in real time and feeds back the monitoring data.

[0084] S322. The control device dynamically adjusts the working status of the heating device and the humidifying device, as well as the light intensity and duration of the supplementary light, based on the monitoring data.

[0085] This invention, through the introduction of a dynamic feedback mechanism, further enhances the controllability and accuracy of experimental conditions. The control device automatically adjusts the operating parameters of the heating, humidifying, and supplemental lighting equipment based on real-time monitoring data, ensuring the experimental environment remains within the set range. For example, when soil moisture falls below the target value, the system automatically increases the water flow rate of the humidifying device while simultaneously fine-tuning the output power of the heating device to balance temperature changes. This closed-loop control method not only improves the stability of experimental conditions but also significantly reduces errors that may arise from human intervention.

[0086] In some embodiments, please refer to Figure 5 To optimize step S4 above, the specific steps of step S4 include:

[0087] S41. After the set experimental period, samples are extracted from each enrichment device, and the concentration of pollutants in the samples is quantitatively analyzed using a gas chromatograph or mass spectrometer.

[0088] S42. By comparing the changes in pollutant concentrations under different conditions, evaluate the differences in the effectiveness of cross-media transport blockers under various environmental parameters.

[0089] S43. Record the final humidity, temperature and light conditions of the soil in each first container to further analyze the specific impact of these factors on the blocking effect.

[0090] This invention, through the introduction of multi-dimensional data analysis methods, further enhances the reliability and depth of experimental results. In step S43, the system not only records environmental parameters but also generates detailed comparative charts based on the changing trends of pollutant concentrations. These charts intuitively demonstrate the performance differences of the blocking agents under different conditions, providing researchers with a clear reference. Furthermore, the data analysis module supports the retrospective analysis and comparison of historical data, helping research teams discover potential patterns or anomalies, thereby optimizing experimental design.

[0091] To enhance the system's adaptability, in some embodiments, the control device also incorporates a customizable mode. Users can flexibly set the gradient ranges of temperature, humidity, and light intensity according to specific research needs, and preset different experimental cycles. This highly adjustable design enables the system to simulate more complex natural environmental conditions, such as extreme climates or seasonal transitions, thereby expanding its application areas.

[0092] Furthermore, to facilitate the explanation of the principles of the above technical embodiments, the following uses the experimental blank group and the experimental control group (the experimental blank group is numbered A0, and the experimental control group is numbered A1, A2, A3, and so on, as needed) as examples for a more specific explanation.

[0093] First, perform step S1 as described above, that is, prepare multiple soil samples, each containing the same proportion of toluene contaminant. For example, the soil sample selected for the experiment can be contaminated soil sampled on-site, or a soil sample with a certain concentration of contamination prepared in the laboratory to study the effect of remediation technology on blocking the transmission of a target characteristic pollutant. When using laboratory-prepared target pollutant samples, it is necessary to ensure that the soil is not contaminated by the target pollutant before preparation. For example, taking toluene as the target pollutant, when studying the effect of activated carbon adsorption on blocking the transmission of toluene contaminant in soil, soil that has been tested and found to be free of toluene contaminant is used as the experimental soil. The preparation steps are as follows: First, take a certain mass of uncontaminated soil and adjust the moisture content to the experimental set value; then weigh a certain mass of toluene contaminant and quickly and thoroughly mix it with the soil sample adjusted to the required moisture content. This is the contaminated soil sample required for the transmission blocking verification experiment. It should be noted here that since the pollution control values ​​of pollutants such as VOCs / SVOCs in soil are relatively low, it can be assumed that the pollutants added during the preparation process do not affect the soil moisture content and other indicators.

[0094] Next, the samples from the experimental blank group and the experimental control group were processed according to the requirements of steps S2-S4 above. The transmission blocking effect can then be evaluated.

[0095] Finally, step S5 is performed, which involves determining the transmedia transport blocking effect of each soil sample under the corresponding temperature, humidity, and light conditions based on the detected pollutant content.

[0096] The formula for evaluating the transmission blocking effect is as follows: n=(C0*V0-C1*V1) / C0*V0 Where: n is the transmedia transmission blocking efficiency of the target pollutant; C0 and V0 are the concentration (unit: mg / L) of the target pollutant in the enrichment device and the volume (unit: L) of the enrichment solution under the experimental blank group conditions; C1 and V1 are the concentration (unit: mg / L) of the target pollutant in the enrichment device and the volume (unit: L) of the enrichment solution under the experimental control group 1 conditions. Depending on the number of experimental groups, they can be replaced with C2, C3… and V2, V3… for calculation.

[0097] Therefore, the trans-medium transport blocking efficiency calculated using the above formula can intuitively reflect the actual effect of the blocking agent under different experimental conditions. For example, in a comparative experiment, if the blocking efficiency of one group is significantly higher than that of other groups, it indicates that the blocking agent or environmental parameter under that condition has a strong inhibitory effect on the migration of pollutants. Furthermore, through comprehensive analysis of multiple sets of experimental data, the formulation and application method of the blocking agent can be further optimized to improve its performance in practical applications.

[0098] More specifically, please refer to the following two examples.

[0099] Example 1: Using toluene as the target pollutant, soil samples containing toluene were prepared in the laboratory for evaluation of transport blocking technology.

[0100] Twenty kg of soil samples that were not contaminated with toluene were selected and their moisture content was adjusted to 40%. Then, according to the standard of 1200 mg / kg for the risk control value of soil pollution in construction land (Class II land) in the "Soil Environmental Quality Construction Land Soil Pollution Risk Control (Trial)" (GB 36600-2018), soil samples with a toluene content of 1200 mg / kg were prepared. Two portions of each prepared soil sample were placed in an 8-module experimental apparatus. One portion served as the experimental blank, designated A0. The other portion used activated carbon as a technique to block the transmedia transport of toluene pollutants. 20 g of activated carbon powder was evenly sprayed onto the surface of the soil sample, and the activated carbon powder was mixed with the surface soil using a tool to form a 2-3 cm thick activated carbon-soil mixed layer. This served as the experimental control group, designated A1.

[0101] Place A0 and A1 into the two measurement systems respectively, install the direct-insertion soil temperature and humidity sensors, and then seal the first container. The experimental temperature was set to 40℃, the pumping rate was 100mL / min, the plant grow lights were not turned on during the experiment, and the organic absorbent in the 6 migratory organic enrichment device was 200mL acetonitrile solution.

[0102] The results of daily sampling of the organic absorbent in the enrichment device are shown in the table below:

[0103]

[0104] Example 2: Organically contaminated soil from a chemical industrial park was collected as an experimental sample to evaluate the transmission blocking technology.

[0105] Soil samples were collected from a chemical industrial park and found to be contaminated with organic pollutants. Analysis revealed that the main organic pollutants were benzene and 1,1,1-trichloroethane, with concentrations of 212.00 mg / kg and 1034.33 mg / kg, respectively. A 20 kg soil sample was selected, and the soil moisture content was adjusted to 30%. Two soil samples were prepared and placed in an 8-module experimental apparatus. One sample served as the experimental blank (B0), while the other served as the control group (B1) by uniformly spraying 20 g of activated carbon powder onto the surface of the soil sample and mixing it thoroughly with the surface soil to form a 2-3 cm thick activated carbon-soil mixture.

[0106] Place B0 and B1 into the two measurement systems respectively, install the direct-insertion soil temperature and humidity sensors, and then seal the first container. The experimental temperature was set to 50℃, the pumping rate was 100mL / min, the plant grow lights were not turned on during the experiment, and the organic absorbent in the 6 migratory organic enrichment device was 200mL acetonitrile solution.

[0107] The results of daily sampling of the organic absorbent in the enrichment device are shown in the table below:

[0108]

[0109] The above embodiments show that, using the system and method of the present invention, the target pollutants of VOCs / SVOCs multi-pollutant cross-media migration at the air-soil interface can be qualitatively and quantitatively analyzed, providing data support for evaluating the transmission blocking effect of remediation technologies on target pollutants, and providing a systematic method for engineering application comparison of cross-media transmission blocking technologies.

[0110] It should be noted that, given the extremely slow transmedia transport rate of soil pollutants, the experimental parameters were designed as follows to accelerate the transmedia transport process and better quantify the transmedia transport blocking rate, without affecting the activity of the relevant materials in multiple experiments:

[0111] 1) Considering the influence of soil humidity on the transmedia transport rate of pollutants, this design adopts a direct-insertion soil temperature and humidity sensor with a range of 0 to 100%. The sensor can monitor the temperature and humidity of the soil sample in real time during the experiment. The controller controls the nozzle to spray water to adjust the humidity of the soil environment. The humidity of the soil environment can be adjusted from 0% to 100%.

[0112] 2) By designing a heating device, the experiment can be run in an environment above room temperature, accelerating the transfer of pollutants from the soil to the air. The operating temperature of the constant temperature water tank is controlled by a controller to the experimental set value, and the start, stop and speed of the constant temperature water pump are controlled by the controller to regulate the temperature of the soil environment, thereby realizing the automation of soil temperature and humidity control. The soil temperature can be adjusted within a range of 20℃ to 80℃.

[0113] To further clarify, when the soil pollution transmission blocking technology used includes phytoremediation and microbial remediation, the soil temperature was adjusted within the range of 20℃ to 40℃ in the experiment, taking into account the environmental temperature required for the growth of microorganisms and plants.

[0114] 3) Considering that phytoremediation is also a commonly used technology for blocking soil pollution transmission, supplemental lighting is used to provide sufficient light for plant growth. The start / stop and light intensity of the supplemental lighting are controlled by a controller. The start / stop of the supplemental lighting can simulate the natural alternation of day and night light, and the changes in light intensity can simulate natural sunshine and rain. A continuous lighting mode can also be set to accelerate plant growth and speed up the experiment. The daily illumination time of the supplemental lighting is controlled between 0 and 24 hours.

[0115] 4) When preparing soil samples of a certain concentration of target pollutants in the laboratory, under the premise of ensuring experimental safety, the initial concentration of the target pollutants in the prepared soil should generally not exceed 10 times the risk control value of soil pollution for construction land (Class II land) in the "Soil Environmental Quality Construction Land Soil Pollution Risk Control (Trial)" (GB 36600-2018).

[0116] 5) Considering that pollutants can migrate from the soil medium into the air, this design employs a vacuum method to create a slightly negative pressure environment in the experimental space, preventing a decrease in the device's airtightness. Using a blower at the inlet would create a slightly positive pressure environment in the sealed space, leading to leakage of the target pollutants and distorting the experimental data. The vacuum rate during the experiment is controlled by a controller that starts and stops the air pump and the opening and closing of the gas mass flow controller. The vacuum rate range of this design is 10 mL / min to 1000 mL / min.

[0117] 6) When using an enrichment device to collect organic pollutants in gas, the reagent in the enrichment bottle is an organic absorbent, including but not limited to methanol, acetonitrile, etc., to facilitate subsequent detection and analysis.

[0118] 7) The modular design of the enrichment device allows for daily replacement and analysis of the collected target pollutant concentration. If no target pollutant is detected in the enrichment device for three consecutive days during the experiment, the experiment can be terminated early; the experimental cycle can be flexibly adjusted based on the test results. Each batch of experiments takes 5-20 days.

[0119] This invention also provides another method for determining the blocking effect of air-soil inter-medium transport, based on a system for determining the blocking effect of air-soil inter-medium transport. The system includes a first container, an enrichment device, a humidification device, a heating device, a supplementary lighting device, a pollutant gas source device, and a control device. The first container holds clean soil; the enrichment device is connected to the interior of the first container to collect pollutant gases within it; the humidification device is connected to the first container to increase soil humidity; the heating device is connected to the first container to increase soil temperature; the supplementary lighting device includes a supplementary light lamp disposed within the first container; plants are grown in the soil to be tested; the supplementary light lamp simulates sunlight and is used to provide supplemental lighting for the plants; the pollutant gas source device is connected to the first container to introduce pollutants into it; the control device is connected to the humidification device, heating device, supplementary lighting device, and pollutant gas source device to control the temperature, humidity, light intensity, and airflow rate within the first container.

[0120] The method for determining the blocking effect of air-soil interface cross-medium transport includes the following steps:

[0121] S1' Prepare multiple portions of clean soil.

[0122] S2. Spray different proportions of transmedia transport blocking agent onto each soil sample, and place each soil sample into the first container of the measurement system accordingly.

[0123] S3. A control device is used to control the heating device, humidification device and supplementary lighting to control the temperature, humidity and light of the soil in each first container.

[0124] S4. After the set experimental period, the pollutant content in each enrichment device is detected.

[0125] S5'. Based on the detected pollutant content and the remaining amount of pollutants in the pollutant gas source device, determine the blocking effect of each intermediary transport barrier from gas to soil under different temperatures, humidity and light conditions.

[0126] To facilitate the explanation of the principles of the above technical embodiments, the following uses experimental blank group and experimental control group (the experimental blank group is numbered C0, and the experimental control group is numbered C1, C2, C3, and so on, as needed) as examples for a more detailed explanation.

[0127] First, perform step S1' as described above, that is, prepare multiple samples of clean soil. Each soil sample must be ensured to be free from contamination by the target pollutant and to have the same physicochemical properties to guarantee the reliability of the experimental results. For example, clean soil stored in the laboratory can be selected, or field-sampled soil that has been treated to remove potential pollutants. Subsequently, according to the experimental design requirements, each soil sample undergoes necessary pretreatment, such as adjusting parameters like moisture content and compaction, to meet the experimental conditions.

[0128] Next, following the steps outlined in S2 above, spray each soil sample with a different proportion of transmedia transport inhibitors. These inhibitors can be single-component or composite formulations of multiple materials; the specific choice depends on the experimental objective. Inhibitors may include microbial agents, activated carbon mixtures, etc. After spraying, place each soil sample into the first container of the measurement system and record the initial state of each sample group.

[0129] Then, step S3 is executed, using the control device to adjust the heating device, humidification device, and supplemental lighting to control the temperature, humidity, and light intensity of the soil in each of the first containers. By precisely controlling these environmental parameters, various practical application scenarios can be simulated, such as soil environments in arid regions, humid climates, or under strong sunlight conditions. Simultaneously, dynamically changing environmental conditions, such as diurnal temperature variations and rainfall cycles, can be set according to experimental needs to better reflect real-world conditions.

[0130] After the set experimental period, the process proceeds to step S4, where the pollutant content in each enrichment device is detected. By sampling and analyzing the organic absorbent in the enrichment bottle, the accumulation of gaseous pollutants can be quantitatively determined, and relevant data can be recorded.

[0131] Finally, proceed to step S5' above. Based on the detected pollutant content and the remaining pollutant amount in the pollutant gas source device, determine the blocking effect of each transmedia transport blocker on the gas-to-soil transport under different temperature, humidity, and light conditions. Specifically, the blocking efficiency can be calculated by comparing the data of the experimental blank group and the experimental control group, and the actual effect of different blockers can be evaluated. For example, if the accumulation of gaseous pollutants in a certain group of experiments is significantly lower than that in other groups, it indicates that the blocker used under that condition has a strong inhibitory effect on pollutant migration.

[0132] The above methods not only allow for qualitative analysis of the mechanisms of action of different blocking technologies but also enable quantitative evaluation of their performance. This provides a scientific basis for optimizing blocking agent formulations, improving treatment technologies, and guiding engineering practices.

[0133] The above description is merely an exemplary embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformations made using the contents of the present invention specification and drawings under the technical concept of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A system for measuring the blocking effect of air-soil interface transmedia transport, characterized in that, include: The first container is used to hold the soil to be tested; An enrichment device, connected to the interior of the first container, is used to collect pollutants volatilized from the soil to be tested; A humidifying device, connected to the first container, is used to increase the humidity of the soil to be tested; A heating device, connected to the first container, is used to increase the temperature of the soil to be tested; A supplemental lighting device, comprising a supplemental light lamp disposed inside the first container; the soil to be tested is inhabited with plants for absorbing pollutants from the soil to be tested and the first container, thereby controlling the migration of pollutants at the air-soil interface. The supplemental light simulates sunlight and is used to supplement the light of the plant in order to promote the growth of the plant and verify the inhibitory effect of the plant. A ventilation device, connected to the first container, to increase the airflow rate within the first container; and, A control device is connected to the humidification device, the heating device, the supplementary lighting device, and the ventilation device to control the temperature, humidity, light intensity, and air circulation rate inside the first container.

2. A system for measuring the blocking effect of air-soil inter-medium transport, characterized in that, include: The first container is used to hold clean soil; An enrichment device is connected to the interior of the first container to collect pollutant gases inside the first container; A humidifying device, connected to the first container, is provided to increase the humidity of the soil. A heating device, connected to the first container, is used to increase the temperature of the soil; A supplemental lighting device, comprising a supplemental light lamp disposed within the first container; the soil to be tested contains plants; the supplemental light lamp simulates sunlight and is used to provide supplemental lighting for the plants. A pollutant gas source device is connected to the first container to introduce pollutants into the first container; as well as, A control device is connected to the humidification device, the heating device, the supplementary lighting device, and the pollutant gas source device to control the temperature, humidity, light intensity, and air circulation rate inside the first container.

3. The system for measuring the inter-medium transport blocking effect at the air-soil interface according to claim 1 or 2, characterized in that, The humidification device includes: A room temperature water tank is respectively installed outside the first container; and, A first water pipe is connected between the ambient temperature water tank and the first container. The first water pipe is used to introduce water from the ambient temperature water tank into the first container to increase the humidity of the soil to be tested.

4. The system for measuring the inter-medium transport blocking effect at the air-soil interface according to claim 1 or 2, characterized in that, The first container is provided with a partition with multiple drainage holes; the partition is spaced apart from the bottom wall of the first container to form an interval space; the soil to be tested is located above the partition; The heating device includes a constant temperature water tank and a second water pipe. The constant temperature water tank is located outside the first container, and the second water pipe connects the constant temperature water tank and the interval space. The second water pipe is used to introduce water from the constant temperature water tank into the interval space to increase the temperature and humidity of the soil to be tested.

5. The system for measuring the inter-medium transport blocking effect at the air-soil interface according to claim 4, characterized in that, It also includes a second container with an open top, which is disposed on the partition and is used to hold the soil to be tested. The second container is provided with a handle to facilitate placing the second container on the partition of the first container and to facilitate removing the second container from the partition inside the first container.

6. The system for measuring the inter-medium transport blocking effect at the air-soil interface according to claim 5, characterized in that, The second container is provided in multiple forms, including: The soil samples in multiple second containers are configured with the same contaminant; and / or, At least two of the soil samples in the multiple second containers are configured with different contaminants.

7. The system for measuring the inter-medium transport blocking effect at the air-soil interface according to claim 1 or 2, characterized in that, The enrichment device includes: An enrichment bottle containing a solution that can chemically react with pollutants volatilized from the soil being tested; A suction pipe is connected between the first container and the gas collecting bottle; The gas extraction pipe is equipped with an air pump to pump the gas in the first container into the enrichment bottle, so that the pollutants volatilized from the soil to be tested can fully contact the solution and undergo a chemical reaction.

8. The system for measuring the inter-medium transport blocking effect at the air-soil interface according to claim 1 or 2, characterized in that, The control device includes a temperature sensor, a humidity sensor, and a controller; the temperature sensor and the humidity sensor are respectively installed in the first container to monitor the temperature and humidity of the soil to be tested in real time; the controller adjusts the working state of the humidification device and the heating device according to the monitoring data of the temperature sensor and the humidity sensor to maintain the temperature and humidity of the soil to be tested within a preset range.

9. A method for determining the blocking effect of inter-medium transport at the air-soil interface, based on the system for determining the blocking effect of inter-medium transport at the air-soil interface as described in claim 1, characterized in that, The method for determining the inter-medium transport blocking effect at the air-soil interface includes the following steps: S1. Prepare multiple soil samples, each containing the same proportion of pollutants; S2. Spray different proportions of transmedia transport blocking agent onto each sample of soil, and place each sample of soil into the first container of the measuring system in a corresponding manner; S3. The heating device, the humidifying device and the supplementary light are controlled by a control device to control the soil in each of the first containers at different temperatures, humidity and light levels. S4. After the set experimental period, the pollutant content in each enrichment device is detected. S5. Based on the detected pollutant content, determine the blocking effect of each sample of the transmedia transport blocking agent from soil to gas under the corresponding temperature, humidity and light conditions.

10. A method for determining the blocking effect of inter-medium transport at the air-soil interface, based on the system for determining the blocking effect of inter-medium transport at the air-soil interface as described in claim 2, characterized in that, The method for determining the inter-medium transport blocking effect at the air-soil interface includes the following steps: S1', Prepare multiple portions of clean soil; S2. Spray different proportions of transmedia transport blocking agent onto each sample of soil, and place each sample of soil into the first container of the measuring system in a corresponding manner; S3. The heating device, the humidifying device and the supplementary light are controlled by a control device to control the soil in each of the first containers at different temperatures, humidity and light levels. S4. After the set experimental period, the pollutant content in each enrichment device is detected. S5'. Based on the detected pollutant content and the remaining amount of pollutants in the pollutant gas source device, determine the blocking effect of each intermediary transport barrier from gas to soil under different temperatures, humidity and light conditions.

11. The method for determining the inter-medium transport blocking effect at the air-soil interface according to claim 9 or 10, characterized in that, Step S3 specifically includes: S31. Set different temperature, humidity and light parameters to simulate various environmental conditions; S32. The control device automatically adjusts the output power of the heating device, the water flow rate of the humidifying device, and the light intensity and time of the supplementary light according to the set different temperatures, humidity and light parameters, as well as the weight of each soil sample, so as to achieve gradient changes in soil temperature, humidity and light.

12. The method for determining the blocking effect of air-soil interface transmedia transport according to claim 11, characterized in that, Step S32 specifically includes: S321. The control device monitors the soil temperature, humidity and pollutant content in real time and feeds back the monitoring data; S322. The control device dynamically adjusts the working status of the heating device and the humidifying device, as well as the light intensity and duration of the supplementary light, based on the monitoring data.

13. The method for determining the inter-medium transport blocking effect at the air-soil interface according to claim 9 or 10, characterized in that, Step S4 specifically includes: S41. After the set experimental period, samples are extracted from each enrichment device, and the concentration of pollutants in the samples is quantitatively analyzed using a gas chromatograph or mass spectrometer. S42. By comparing the changes in pollutant concentrations under different conditions, evaluate the differences in the effectiveness of cross-media transport blockers under various environmental parameters; S43. Record the final humidity, temperature and light conditions of the soil in each first container to further analyze the specific impact of these factors on the blocking effect.

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