Device for analyzing influence of soil solid-phase components on vanadium migration and transformation

Abstract

The utility model relates to the technical field of environmental governance, and particularly provides a device for analyzing soil solid phase components to influence vanadium migration and transformation, the device comprises N filler columns, the number of the filler columns is N, the N is a positive integer greater than 1, and each filler column is in a hollow tube shape with two communicated ends; the openings in the two ends of the packed column are each covered with one screen, and the openings of the packed column are completely sealed through the screens in the direction perpendicular to the axis of the packed column; the cover plate covers the opening of the packed column and is used for fixing the screen at the end part of the packed column; a flowing opening is formed in the cover plate and is used for inflow and outflow of a vanadium solution. The device has the advantage that the device can analyze the influence of soil solid-phase components on vanadium migration and transformation.

Description

Technical Field

[0001] The invention relates to the technical field of environmental governance, and in particular to a device for analyzing the effects of soil solid phase components on vanadium migration and transformation. Background Art

[0002] Vanadium (V) is a transition element naturally present in the Earth's continental crust. V is well known for its unique properties and wide application in modern industry. The increasing demand for V has driven extensive mining and smelting activities, resulting in elevated V concentrations in soil. V can enter the human body through various pathways, posing a significant threat to human health. V exists in multiple oxidation states, of which +4 (IV) and +5 (V) are the most common in the environment. V(V) exhibits the strongest toxicity and mobility, while V(IV) can spontaneously precipitate under neutral conditions. Once V enters the soil environment, migration, transformation, adsorption, complexation, and precipitation processes occur simultaneously. However, there is currently no device to analyze the effects of soil solid components on the migration and transformation of vanadium, resulting in a lack of comprehensive understanding of how soil solid components affect the migration and transformation of vanadium, which needs to be addressed urgently. Utility Model Content

[0003] In order to solve the above-mentioned problems, an apparatus for analyzing the influence of soil solid phase components on vanadium migration and transformation is provided in an embodiment of the present application. The apparatus can analyze the influence of soil solid phase components on vanadium migration and transformation.

[0004] To this end, the following technical solutions are adopted in the embodiments of the present application:

[0005] The embodiment of the present application provides a device for analyzing the influence of soil solid phase components on vanadium migration and transformation, comprising: a packing column, wherein N packing columns are provided, wherein N is a positive integer greater than 1, and the packing column is in the shape of a hollow tube with both ends connected; a screen, wherein the openings at both ends of the packing column are respectively covered with a screen, and the screen completely closes the opening of the packing column in a direction perpendicular to the axis of the packing column; a cover plate, which covers the opening of the packing column and is used to fix the screen to the end of the packing column; and a flow port is opened on the cover plate for the inflow and outflow of vanadium solution.

[0006] In this embodiment, the principle of the device is to fill the soil solid phase components in the packing column, and then observe the migration and transformation process of vanadium by interacting with the soil solid phase components in the packing column through the flowing vanadium solution. The design of the packing column allows the vanadium solution to contact the packing evenly, while the screen prevents the packing from being lost. The flow port on the cover plate is used to control the inflow and outflow of the solution, thereby realizing the monitoring and regulation of the vanadium migration and transformation process. The advantage of this device is that it can analyze the influence of the solid phase components in the soil environment on vanadium, and provide a controllable experimental platform for studying the migration and transformation of vanadium. Through the experimental results, we can better understand the influence of the solid phase components in the soil on the adsorption, complexation, precipitation and other processes of vanadium, and provide a scientific basis for the management and resource utilization of vanadium in the soil environment.

[0007] As a feasible implementation mode, N is 4, and the 4 filler columns are filled with whole soil, minerals, organic matter and microorganisms respectively.

[0008] In this embodiment, four packing columns are used to fill different solid phase components in the soil, including whole soil, minerals, organic matter and microorganisms, to study their effects on vanadium migration and transformation. Exemplarily, uncontaminated undisturbed soil collected from the Panzhihua mining area is selected to separate the three solid phase components of minerals, organic matter and microorganisms, and the unseparated whole soil is set as a control test. It should be understood that the above-mentioned whole soil refers to the uncontaminated undisturbed soil collected from the Panzhihua mining area. Whole soil packing column: the overall structure and composition of the undisturbed soil, including minerals, organic matter and microorganisms. This packing column provides a holistic environment that can reflect the overall impact of the soil. Mineral packing column: mainly mineral components in the undisturbed soil, such as oxides, silicates, etc. This packing column can study the interaction between vanadium and different minerals and understand the adsorption and precipitation behavior of vanadium in the soil. Organic packing column: organic components in the undisturbed soil, such as humus, biological residues, etc. Organic matter has an important influence on the adsorption and complexation of vanadium, and this packing column can help study the influence of organic matter on vanadium migration and transformation. Microbial filler column: microbial communities in the original soil, including bacteria, fungi and other microorganisms. Microorganisms have a certain influence on the transformation and migration of vanadium in the soil. This filler column can study the role of microorganisms in the vanadium cycle. In this way, by separating the different solid phase components in the soil and analyzing each solid phase component separately, the device can more realistically reflect the influence of each solid phase component in the soil environment on the migration and transformation of vanadium, and improve the reliability and repeatability of the experiment. Moreover, by designing different filler columns, the influence of different solid phase components on the migration and transformation of vanadium can be studied in a targeted manner, so as to gain an in-depth understanding of the mechanism of action of each component in the vanadium cycle. Through the experimental results, the impact of different soil remediation strategies on vanadium can be comprehensively evaluated, providing a scientific basis for soil pollution control and resource utilization.

[0009] As an achievable implementation manner, the filler column is a polypropylene column.

[0010] In this embodiment, polypropylene is a material with high chemical stability, which can maintain stable chemical properties during the experiment and will not have unexpected chemical reactions with the experimental solution, thereby ensuring the reliability of the experimental results. In addition, polypropylene materials have good physical properties, such as high mechanical strength, good water permeability, corrosion resistance, etc., and can withstand the pressure and flow conditions during the experiment, ensuring the stability and reliability of the experimental device. At the same time, the polypropylene column can be customized according to the experimental requirements, with high flexibility, can meet the needs under different experimental conditions, and improve the flexibility and operability of the experiment.

[0011] As an achievable implementation, at least one sampling port is provided on the packing column, the sampling port passes through the packing column, and the opening of the sampling port is covered with a circular plate and a gasket, the circular plate and the gasket are used to close the sampling port to maintain a closed environment of the packing column.

[0012] In this embodiment, the design of setting a sampling port in the packing column can realize real-time monitoring and sampling of the internal environment of the packing column to obtain experimental data on vanadium migration and transformation. For example, solid phase components can be collected through the sampling port to observe their changes during the vanadium migration process. The circular plate and the gasket are used to close the sampling port to ensure the closedness of the internal environment of the packing column, prevent interference and pollution from the external environment, and ensure the accuracy and reliability of the experimental data.

[0013] As an achievable implementation, the packing column has a diameter of 2.5 cm and a height of 20 cm.

[0014] In this embodiment, by determining the diameter and height of the packing column, the experimental conditions, such as the packing amount, reaction area, etc., can be precisely controlled, thereby ensuring the repeatability and accuracy of the experimental results.

[0015] As a feasible implementation manner, the mesh is a nylon mesh with a pore size of 10 μm.

[0016] In this embodiment, the nylon mesh generally has good corrosion resistance and wear resistance, can withstand repeated use and cleaning in the experiment, and has a long service life. In addition, the nylon mesh is simple and convenient to use, easy to install and replace, and can be flexibly applied in the experiment to meet the needs of different experimental conditions. The nylon mesh with a pore size of 10 μm can support each solid phase medium in the packing column and distribute the vanadium solution flow at the same time.

[0017] As an achievable implementation, the cover plate includes a top cover and a bottom cover; the top cover is provided with a water outlet for discharging the vanadium solution; the bottom cover is provided with a water inlet for receiving the vanadium solution.

[0018] In this embodiment, the water outlet and the water inlet are designed so that the flow rate and flow rate of the vanadium solution can be accurately controlled when flowing in the device, which is conducive to the stability and controllability of the experimental conditions. The position and size design of the water outlet and the water inlet follow the principles of fluid dynamics to ensure that the fluctuation and turbulence of the liquid are effectively reduced during the flow process, which is conducive to improving the stability and uniformity of the fluid during the experiment.

[0019] As an achievable implementation manner, the water inlet is connected to a peristaltic pump, and the peristaltic pump is used to force the vanadium solution to enter the packing column from the water inlet and flow upward in the packing column.

[0020] In this embodiment, the peristaltic pump is a pump that pushes the liquid to flow by squeezing a hose. Its working principle is to squeeze and push the liquid in the hose by rotating the rotor on the shaft, thereby achieving the transportation and flow of the liquid. The peristaltic pump can accurately control the flow rate and flow velocity of the fluid, and can adjust the speed and amount of pushing the vanadium solution according to the experimental requirements to ensure the stability and controllability of the experimental conditions.

[0021] As an achievable embodiment, the bottom cover includes a clamping tube connected to the packing column, the clamping tube can be coaxially sleeved on the outer wall of the packing column, a plurality of clamping holes are provided on the clamping tube, clamping balls are embedded in the clamping holes, the size of the clamping holes is larger than the size of the clamping balls, a clamping ball groove for accommodating the clamping balls to be embedded is provided on the outer peripheral surface of the packing column, and a sliding sleeve is installed on the clamping tube to support the clamping balls to be partially embedded in the clamping ball groove.

[0022] In this embodiment, the clamping tube is connected to the packing column through the clamping hole and the clamping ball, forming a reliable connection method. Specifically, the clamping hole is embedded with a clamping ball, and the outer peripheral surface of the packing column is provided with a clamping ball groove, and the clamping ball can be embedded in the clamping ball groove to realize the connection between the clamping tube and the packing column. The sliding sleeve is installed on the clamping tube to support the clamping ball part embedded in the clamping ball groove. Such a design can ensure that the clamping ball remains stable in the clamping ball groove of the packing column to prevent it from accidentally falling out, thereby ensuring that the connection between the packing column and the bottom cover is firm and reliable. In this way, a stable and reliable connection is formed between the bottom cover and the packing column, which can withstand certain pressure and vibration without loosening or falling off. Because the connection method is simple and reliable, the connection between the bottom cover and the packing column can be repeatedly disassembled and installed, has good reusability, and is convenient for maintenance and replacement.

[0023] As a feasible implementation, the top cover is in an inverted U-shape, and a rubber ring is embedded inside the top cover, and a snap ring groove for accommodating the rubber ring is opened on the outer periphery of the packing column.

[0024] In this embodiment, the top cover adopts an inverted U-shaped design, so that it forms a covering structure above the packing column, which helps to protect the packing column from the influence of the external environment. A rubber ring is embedded in the top cover, and a snap ring groove is opened on the outer periphery of the packing column. The rubber ring can be embedded in the snap ring groove to form a connection method with good sealing performance. The technical solution of adopting an inverted U-shaped top cover design and embedding a rubber ring can improve the sealing performance of the connecting parts, protect the packing column from the influence of the external environment, reduce friction loss, simplify installation operations, and improve the reliability and stability of the system.

[0025] In summary, the solid phase components (minerals, organic matter, microorganisms) of the soil are separated and filled into a columnar device, which is operated in a continuous flow to observe the total amount and morphological changes of vanadium in and out of the water. At the same time, a sampling port is set to collect solid phase components and observe their changes during the vanadium migration process. In this way, the device provided by this application can analyze the effects of different soil components on vanadium migration, fixation and transformation. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the specific implementation methods of the present application or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0027] The various regions, shapes, and relative sizes and positions shown in the figures are merely exemplary and may deviate in practice due to manufacturing tolerances or technical limitations. Those skilled in the art may also design regions / layers with different shapes, sizes, and relative positions according to actual needs.

[0028] In each of the drawings, the same elements are represented by similar reference numerals. For the sake of clarity, the various parts in the drawings are not drawn to scale, and some features may be exaggerated or omitted to more clearly illustrate and explain the present application.

[0029] Figure 1 This is a schematic diagram of the structure of a device for analyzing the effects of soil solid phase components on vanadium migration and transformation provided in an embodiment of the present application;

[0030] Figure 2 for Figure 1 A cross-sectional view of

[0031] Figure 3 This is a schematic diagram of the structure of the sampling port provided in the embodiment of the present application;

[0032] Figure 4 It is a cross-sectional view showing the matching relationship between the bottom cover and the packing column.

[0033] In the figure, 1, packing column; 11, snap-on ring groove; 12, snap-on ball groove; 2, screen; 3, cover plate; 31, top cover; 311, water outlet; 312, rubber ring; 32, bottom cover; 321, water inlet; 322, snap-on tube; 323, snap-on hole; 324, snap-on ball; 325, sliding sleeve; 326, support ring; 327, reset spring; 4, sampling port; 5, round plate; 6, gasket; 7, peristaltic pump; 8, water inlet container. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application.

[0035] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0036] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0037] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0038] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being “above”, “above”, and “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below”, and “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0039] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0040] Soil minerals are the main component of soil solid phase, accounting for more than 95% of soil mass. The unique structure of minerals enables them to interact with various substances, effectively fix, exchange ions and participate in redox processes. Studies have shown that the nontronite in soil has non-selective structural binding ability for anions and / or cations, exhibits high stability under various environmental conditions, and is widely used to remove a variety of metal ions. Soil organic matter accounts for only 1%-10% of soil components. Various functional groups on the surface of soil organic matter, such as carboxyl, alcohol hydroxyl, phenolic hydroxyl, and thiol, can undergo chelation, ion exchange, inner and outer sphere complex formation, adsorption, and coprecipitation with metal ions. Studies have shown that V(IV) is strongly complexed with natural organic matter. In addition, some researchers have shown that after organic matter reduces V(V), V(IV) is retained in the system as an organic inner sphere complex. Soil is the habitat of many microorganisms. There are huge numbers of microorganisms and many types of microorganisms. They are the engines that regulate geochemical reactions in the soil, including the formation of organic matter, mineral transformation, and participation in redox reactions, generating the dynamic coupled microbial processes and geochemical reactions. On the one hand, there are many functional groups on the surface of microorganisms, and there are adsorption sites for heavy metals and aqueous chemicals. Microorganisms can also change the form of heavy metals through the action of various detoxification mechanisms, especially for vanadium reduction. Therefore, it is particularly important to clarify the role of each solid phase component in the migration and transformation of V (V) in the soil, which is particularly important for revealing the biogeochemical behavior of vanadium.

[0041] To this end, an embodiment of the present application provides a device for analyzing the effects of soil solid phase components on vanadium migration and transformation, which can observe the effects of various soil solid phase components on vanadium migration and transformation.

[0042] like Figure 1 As shown, the device for analyzing the influence of soil solid phase components on vanadium migration and transformation includes a packing column 1 with a hollow structure, and both ends of the packing column 1 are open, so that the packing column 1 is a hollow tube with both ends connected, and the opening of the packing column 1 is covered with a screen 2 and a cover plate 3, and the cover plate 3 is provided with a flow port for the inflow and outflow of the vanadium solution.

[0043] Exemplarily, the packing column 1 is a polypropylene column. In some embodiments, the packing column 1 is provided with N, where N is a positive integer greater than 1. It is understandable that the packing column 1 can determine its own quantity according to each solid phase component of the soil. For example, in the present embodiment, N is 4, and the four packing columns 1 are respectively filled with the original soil of the soil, and the three solid phase components of minerals, organic matter and microorganisms separated from the original soil of the soil. It is worth mentioning that the original soil of the soil is selected from the uncontaminated original soil collected from the Panzhihua mining area. Optionally, the packing column 1 has a diameter of 2.5 cm and a height of 20 cm. The screen 2 is a nylon screen 2 with a pore size of 10 μm, so as to support the internal medium of the packing column 1 without affecting the flow of the vanadium solution.

[0044] See also Figure 2 , the outer wall of the packing column 1 is provided with M sampling ports 4, where M is a positive integer greater than or equal to 1. The sampling ports 4 penetrate the side wall of the packing column 1. In one example, M is 3. The M sampling ports 4 are arranged in sequence on the outer wall of the packing column 1 along the axial direction of the packing column 1, that is, in the longitudinal direction in the figure. The sampling ports 4 can collect the solid phase components in the packing column 1, so as to observe the changes of each soil solid phase component in the packing column 1 during the vanadium migration process.

[0045] like Figure 3 As shown, each sampling port 4 is covered with a circular plate 5 and a gasket 6. The circular plate 5 and the gasket 6 can seal the sampling port 4 to prevent external air from entering the interior of the packing column 1 through the sampling port 4.

[0046] like Figure 1 and Figure 2 As shown, the cover plate 3 includes a top cover 31 and a bottom cover 32, the bottom cover 32 is detachably mounted on the lower end of the packing column 1, and the top cover 31 is detachably mounted on the upper end of the packing column 1. Exemplarily, the top cover 31 is connected to a water outlet 311, and the water outlet 311 is used to discharge the vanadium solution; the bottom cover 32 is provided with a water inlet 321, and the water inlet 321 is used to receive the vanadium solution. The water inlet 321 is connected to a peristaltic pump 7, and the peristaltic pump 7 is connected to a water inlet container 8 containing the vanadium solution. The peristaltic pump 7 is used to provide power to cause the vanadium solution in the water inlet container 8 to enter the packing column 1 from the water inlet 321 and flow upward in the packing column 1.

[0047] like Figure 2 As shown, the top cover 31 is an inverted U-shaped configuration, and a rubber ring 312 is embedded inside the top cover 31, and a snap ring groove 11 for accommodating the rubber ring 312 is provided on the outer periphery of the packing column 1. The rubber ring 312 can be embedded in the snap ring groove 11 to form a connection method with good sealing performance. Since the top cover 31 does not need to support the medium inside the packing column 1, the technical solution of adopting an inverted U-shaped top cover 31 design and embedding the rubber ring 312 is mainly used to improve the sealing performance of the connection between the top cover 31 and the packing column 1, while protecting the packing column 1 from the influence of the external environment, reducing friction loss, simplifying installation operations, and improving the reliability and stability of the system.

[0048] like Figure 4As shown, the bottom cover 32 needs to support the medium filled in the packing column 1, so a relatively stable detachable connection method is required. Exemplarily, the bottom cover 32 includes a clamping tube 322 that is connected to the packing column 1, and the clamping tube 322 can be coaxially sleeved on the outer wall of the packing column 1. The clamping tube 322 is provided with a plurality of clamping holes 323, such as 3, 4, 5 or 6 clamping holes 323, which are not limited in this application. A clamping ball 324 is embedded in the clamping hole 323, and the size of the clamping hole 323 is larger than the size of the clamping ball 324, and the clamping ball 324 is embedded in the clamping hole 323 without slipping. A clamping ball groove 12 for accommodating the embedding of the clamping ball 324 is provided on the outer peripheral surface of the packing column 1, and the clamping ball groove 12 is an annular groove. A sliding sleeve 325 is coaxially sleeved on the clamping tube 322 to support the clamping ball 324 and partially embed it in the clamping ball groove 12. When the clamping tube 322 is coaxially sleeved on the bottom end of the packing column 1, since the size of the clamping hole 323 is larger than the size of the clamping ball 324, the clamping ball 324 will be received in the clamping hole 323 at this time, and will not affect the clamping tube 322 being sleeved on the outer wall of the packing column 1, until the clamping ball groove 12 and the clamping hole 323 are aligned with each other. At this time, the sliding sleeve 325 is moved relative to the clamping tube 322, so that the inner peripheral surface of the sliding sleeve 325 abuts against the clamping ball 324, and then the top clamping ball 324 is embedded in the clamping ball groove 12, and the clamping ball 324 fixes the clamping tube 322 to the bottom of the packing column 1.

[0049] In one possible implementation, in order to make the sliding sleeve 325 hold the clamping ball 324 more stably and reduce the situation where the clamping tube 322 accidentally slips off the packing column 1, a support ring 326 extends outward from the end of the clamping tube 322 away from the packing column 1, and a return spring 327 is fixed to the end of the sliding sleeve 325 facing the support ring 326, and one end of the return spring 327 away from the sliding sleeve 325 is fixed to the support ring 326. When the return spring 327 is in a natural state (not stretched or compressed), the inner circumference of the sliding sleeve 325 abuts against the clamping ball 324, so that the clamping ball 324 is partially embedded in the clamping ball groove 12. When the return spring 327 is compressed and deformed elastically, the sliding sleeve 325 can slide along its own axial direction, and the stroke of the return spring 327 being compressed and deformed elastically satisfies the inner circumference of the sliding sleeve 325 sliding out of the engaging hole 323 .

[0050] When the bottom cover 32 needs to be removed from the bottom of the packing column 1, the sliding sleeve can be pressed to move in the direction of the support ring 326. At this time, the return spring 327 undergoes elastic deformation and shrinkage under the extrusion of the sliding sleeve until the snap-in ball 324 loses the restriction of the sliding sleeve, and the snap-in ball 324 that loses the restriction slides out of the snap-in ball groove 12, so that the snap-in ball 324 loses the restriction on the snap-in tube 322, and the snap-in tube 322 can be removed from the bottom of the packing column 1. When the clamping tube 322 and the packing column 1 are clamped, it is only necessary to insert the bottom of the packing column 1 into the clamping tube 322 until the clamping ball groove 12 and the clamping hole 323 are aligned with each other, and then release the sliding sleeve. The return spring 327 will drive the sliding sleeve to slide upward and return to the initial position under the support of the support ring 326. At this time, the inner circumference of the sliding sleeve 325 and the outer circumference of the clamping tube 322 abut against each other, so when the sliding sleeve 325 covers the clamping hole 323, it will push the clamping ball 324 to move toward the clamping ball groove 12, and finally make the clamping ball 324 partially clamped in the clamping ball groove 12, so as to achieve stable clamping of the clamping tube 322 and the packing column 1. The sliding sleeve 325 is installed on the clamping tube 322 to push the clamping ball 324 to partially embed into the clamping ball groove 12. The snap-in ball 324 can be ensured to remain firmly in the snap-in ball groove 12 of the packing column 1 to prevent it from accidentally falling out, thereby ensuring a firm and reliable connection between the packing column 1 and the bottom cover 32. In this way, a firm and reliable connection is formed between the bottom cover 32 and the packing column 1, which can withstand certain pressure and vibration without loosening or falling off.

[0051] The above article introduces the structure of the device for analyzing the influence of soil solid phase components on vanadium migration and transformation. Next, the working principle of the above device is introduced.

[0052] First, the vanadium solution containing vanadium (V) is flowed upward into the packing column 1 through the peristaltic pump 7 through the water inlet 321, and the outflow sample is continuously collected at a specified time interval, and the concentration of V (V) in the outflow sample aqueous solution is determined at the same time, until the outflow sample concentration is relatively stable. At the end of the transport experiment, each medium in the four packing columns 1 is freeze-dried and homogenized, and the residual vanadium content in the column is measured. Afterwards, the vanadium presence form, solid phase change and microbial community in the column are analyzed and characterized. In this way, the device for analyzing the influence of soil solid phase components on vanadium migration and transformation provided by the present application can fill the separated solid phase components (minerals, organic matter, microorganisms) of the soil into a packing column 1 respectively, and continuously flow operation is performed to observe the total amount and morphological changes of vanadium in and out of the water, and a sampling port 4 is set at the same time, so that the solid phase components can be collected, and their changes in the vanadium migration process are observed, so as to realize the analysis of the role of each solid phase component in the migration and transformation of V (V) in the soil.

[0053] The positional relationship, quantity, structural shape, water flow direction, etc. of the various components of the device provided in the embodiments of the present application are not limited to the above embodiments, and all technical solutions implemented under the principles of the present application are within the protection scope of this solution. Any one or more embodiments or illustrations in the specification, combined in an appropriate manner, are within the protection scope of this solution.

[0054] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application. Those skilled in the art should understand that, although the present application is described in detail with reference to the aforementioned embodiments, the technical solutions described in the aforementioned embodiments can still be modified, or some of the technical features can be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions in the embodiments of the present application.

Claims

1. A device for analyzing the influence of soil solid components on vanadium migration and transformation, characterized in that: include: A packing column, wherein N packing columns are provided, wherein N is a positive integer greater than 1, and the packing column is in the shape of a hollow tube with two ends connected; A screen, wherein the openings at both ends of the packing column are respectively covered with a screen, and the screen completely closes the opening of the packing column in a direction perpendicular to the axis of the packing column; A cover plate, covering the opening of the packing column, and used to fix the screen at the end of the packing column; The cover plate is provided with a flow port for the inflow and outflow of the vanadium solution.

2. The device according to claim 1, characterized in that The N is 4, and the four filling columns are respectively filled with original soil, minerals, organic matter and microorganisms; wherein the minerals, organic matter and microorganisms are separated from the original soil.

3. The device according to claim 1, characterized in that The packing column is a polypropylene column.

4. The device according to claim 1, characterized in that At least one sampling port is arranged on the packing column, and the sampling port passes through the packing column. The opening of the sampling port is covered with a circular plate and a gasket, and the circular plate and the gasket are used to close the sampling port to maintain the closed environment of the packing column.

5. The device according to claim 1, characterized in that The packing column has a diameter of 2.5 cm and a height of 20 cm.

6. The device according to claim 1, characterized in that The sieve is a nylon sieve with a pore size of 10 μm.

7. The device according to any one of claims 1 to 6, characterized in that: The cover plate comprises a top cover and a bottom cover; the top cover is provided with a water outlet, and the water outlet is used to discharge the vanadium solution; the bottom cover is provided with a water inlet, and the water inlet is used to receive the vanadium solution.

8. The device according to claim 7, characterized in that The water inlet is connected to a peristaltic pump, and the peristaltic pump is used to force the vanadium solution to enter the packing column from the water inlet and flow upward in the packing column.

9. The device according to claim 7, characterized in that The bottom cover includes a clamping tube connected to the packing column, the clamping tube can be coaxially sleeved on the outer wall of the packing column, a plurality of clamping holes are provided on the clamping tube, clamping balls are embedded in the clamping holes, the size of the clamping holes is larger than the size of the clamping balls, a clamping ball groove for accommodating the clamping balls is provided on the outer peripheral surface of the packing column, and a sliding sleeve is installed on the clamping tube to support the clamping balls and partially embed them into the clamping ball groove.

10. The device according to claim 7, characterized in that The top cover is in an inverted U-shape, and a rubber ring is embedded inside the top cover. A clamping ring groove for accommodating the rubber ring is opened on the outer periphery of the packing column.

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