CN220289315U - Soil heavy metal migration process and in-situ sampling comprehensive device - Google Patents
Soil heavy metal migration process and in-situ sampling comprehensive device Download PDFInfo
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- CN220289315U CN220289315U CN202321481640.XU CN202321481640U CN220289315U CN 220289315 U CN220289315 U CN 220289315U CN 202321481640 U CN202321481640 U CN 202321481640U CN 220289315 U CN220289315 U CN 220289315U
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- leaching column
- diffusion film
- gradient diffusion
- wall
- heavy metal
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- 229910001385 heavy metal Inorganic materials 0.000 title claims abstract description 39
- 239000002689 soil Substances 0.000 title claims abstract description 37
- 238000005070 sampling Methods 0.000 title claims abstract description 33
- 238000000034 method Methods 0.000 title claims abstract description 27
- 238000011065 in-situ storage Methods 0.000 title claims abstract description 26
- 230000008569 process Effects 0.000 title claims abstract description 24
- 238000013508 migration Methods 0.000 title claims abstract description 22
- 230000005012 migration Effects 0.000 title claims abstract description 22
- 238000002386 leaching Methods 0.000 claims abstract description 112
- 238000009792 diffusion process Methods 0.000 claims abstract description 88
- 239000012528 membrane Substances 0.000 claims abstract description 8
- 238000007789 sealing Methods 0.000 claims description 17
- 239000000463 material Substances 0.000 claims description 14
- 239000007788 liquid Substances 0.000 claims description 8
- 230000000149 penetrating effect Effects 0.000 claims description 8
- 229910052751 metal Inorganic materials 0.000 claims description 4
- 239000002184 metal Substances 0.000 claims description 4
- 238000009826 distribution Methods 0.000 claims description 3
- 230000004907 flux Effects 0.000 abstract description 6
- 238000000429 assembly Methods 0.000 abstract description 5
- 230000000712 assembly Effects 0.000 abstract description 5
- 239000003344 environmental pollutant Substances 0.000 abstract description 3
- 231100000719 pollutant Toxicity 0.000 abstract description 3
- 238000012360 testing method Methods 0.000 abstract description 2
- 239000010408 film Substances 0.000 description 61
- 230000000903 blocking effect Effects 0.000 description 11
- 150000002500 ions Chemical class 0.000 description 8
- 239000000126 substance Substances 0.000 description 6
- 238000012545 processing Methods 0.000 description 4
- 238000001514 detection method Methods 0.000 description 3
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 230000035515 penetration Effects 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- NWUYHJFMYQTDRP-UHFFFAOYSA-N 1,2-bis(ethenyl)benzene;1-ethenyl-2-ethylbenzene;styrene Chemical compound C=CC1=CC=CC=C1.CCC1=CC=CC=C1C=C.C=CC1=CC=CC=C1C=C NWUYHJFMYQTDRP-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000000017 hydrogel Substances 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001802 infusion Methods 0.000 description 1
- 239000003456 ion exchange resin Substances 0.000 description 1
- 229920003303 ion-exchange polymer Polymers 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000007491 morphometric analysis Methods 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- 239000012780 transparent material Substances 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Abstract
The utility model discloses a soil heavy metal migration process and an in-situ sampling comprehensive device, and relates to a test device, which comprises an leaching column, wherein the leaching column is fixed by a hoop and a base; the side surface of the leaching column is provided with a plurality of wall holes, and a plurality of gradient diffusion film components are inserted into the leaching column from the wall holes; blind holes are formed in the opposite side positions of the wall holes, and the front ends of the gradient diffusion films penetrate through the blind holes; and a plugging head provided with a wall hole for plugging the wall hole when the gradient diffusion film assembly is not inserted. The utility model can not only sample the polluted soil in situ through the diffusion gradient membrane component, but also reduce the intervention factors in the sampling treatment process and increase the reliability of the sampled data. The method can also be used for manually adding pollution sources above the leaching column, simulating the migration process of heavy metal pollutants in soil, collecting pollution parameters through gradient diffusion film assemblies with different distances below the pollution sources, and measuring the biological effective state content and diffusion flux of heavy metals with different depths in the vertical direction of the soil.
Description
Technical Field
The utility model relates to the technical field of ecological environment, in particular to a comprehensive device for simulating migration of heavy metals in soil and sampling in situ.
Background
The film gradient diffusion technology (Diffisive gradients in thin-film, DGT) is a method for in-situ determination of the soil heavy metal availability or heavy metal bioavailability by using a gradient diffusion film assembly.
The gradient diffusion film component separates the ion exchange resin from the solution through the infiltration of heavy metal ions into the film/hydrogel, controls the exchange process of the heavy metal ions, realizes the rapid enrichment of the target monitoring substance, and quantitatively analyzes the effective state concentration of the target monitoring substance in the environmental medium through the enrichment amount of the monitored substance. The method can effectively perform in-situ enrichment on the effective state of the substances, and can also realize in-situ enrichment on the existence form of trace metals.
Thus, gradient diffusion film assemblies are now used in the morphometric analysis of trace heavy metals in soil, sediment, and water.
However, the existing gradient diffusion film assembly is mainly used for measuring the horizontal biological effective state content and the diffusion flux of heavy metal ions penetrating into soil, and the vertical biological effective state content and the diffusion flux of heavy metal ions penetrating into soil and the biological effective state content and the diffusion flux at different distances from the vertical pollution source cannot be measured at present.
Disclosure of Invention
In order to solve the technical problems, the utility model provides a comprehensive device for soil heavy metal migration process and in-situ sampling.
The utility model relates to a soil heavy metal migration process and an in-situ sampling comprehensive device, which comprises the following steps:
and the leaching column is vertically arranged and is fixed by the metal base and is in a vertical state.
A plurality of wall holes which are suitable for the gradient diffusion film assembly and can be opened and closed are arranged on the side face of the leaching column.
At least one gradient diffusion membrane assembly radially penetrating the wall aperture from the leaching column and removably disposed within the leaching column.
The soil heavy metal migration process and the in-situ sampling comprehensive device are characterized in that a plurality of wall holes are arranged on the side face of the leaching column in a mode of vertical arrangement and spiral distribution.
The wall holes are equally spaced in the vertical direction.
Further, the gradient diffusion film assembly is formed by fixing the gradient diffusion film in the shell.
The housing includes: the front end and the main body part of the gradient diffusion film component inserted into the leaching column are left at the handles outside the wall holes.
Further, after the gradient diffusion film assembly penetrates into the leaching column, the main body part at the wall hole is in interference fit with the wall hole, so that the wall hole is sealed.
Furthermore, the front end of the gradient diffusion film component is provided with an inclined plane which is convenient for insertion, and a knife edge is formed by the inclined plane.
Further, a blind hole which is matched with the front end of the gradient diffusion film component and used for fixing the front end of the gradient diffusion film component is arranged on the side surface of the leaching column and on the opposite surface of the side surface where the wall hole is located; the front end of the gradient diffusion film component is matched with the blind hole and is fixed in the blind hole.
Further, a guide rail for guiding the process of penetrating the gradient diffusion film component into the leaching column is arranged between the wall hole and the blind hole;
the guide rail is specifically arranged at the corners of the wall hole and the blind hole;
the guide rail is matched with one surface of the knife edge formed by the gradient diffusion film component.
Further, the leaching column is a circular tube, a cavity for loading materials is arranged in the middle of the leaching column, a material inlet is arranged above the leaching column, and a liquid sampling drop is arranged at the bottom end of the leaching column.
The wall hole comprises a pipe orifice arranged on the outer wall of the leaching column, and the axis of the pipe orifice is perpendicular to the axis of the leaching column.
Further, the pipe orifice protrudes outwards from the side wall of the leaching column, the protruding part is a sealing section of the pipe orifice, and the gradient diffusion film assembly is in interference fit with the sealing section.
Further, a blocking head for opening and closing the wall hole is provided, the blocking head is provided with a blocking part for being plugged into the sealing section and a handle which is remained outside the pipe orifice, and the blocking part is in interference fit with the sealing section.
Further, the length of the plugging head is not greater than the length of the pipe orifice, so that one end, close to the inner surface of the leaching column, of the plugging head after penetrating into the pipe orifice is a front end, wherein the front end is an arc-shaped concave surface, the arc radius of the arc-shaped concave surface is the same as the radius of the inner surface of the leaching column, and the arc-shaped concave surface is flush with the inner surface of the leaching column after the plugging head penetrates into the leaching column.
The utility model has the beneficial effects that:
the main body part of the utility model is a leaching column, and sample soil is added in the leaching column, so that the gradient diffusion film can be utilized to rapidly enrich target detection substances to finish in-situ sampling.
And (3) dripping a heavy metal-containing solution above the leaching column, and collecting the leaching solution at a liquid sampling drop at the bottom end of the leaching column for determining parameters such as a solute penetration curve, mobility and the like. Meanwhile, the utility model can also arrange a plurality of gradient diffusion film components on the side wall of the leaching column, collect heavy metals migrating downwards through the gradient diffusion film components with different depths below the pollution source, and observe the biological effective state content and diffusion flux of the heavy metal ions at different distances in the vertical direction.
Drawings
FIG. 1 is a block diagram of the apparatus of the present utility model;
FIG. 2 is a cross-sectional view of a leaching column of the present utility model;
FIG. 3 is a cross-sectional view of a gradient diffusion membrane assembly of the present utility model;
FIG. 4 is a perspective view of a gradient diffusion film assembly of the present utility model;
fig. 5 is a block head configuration diagram of the present utility model.
Wherein: a leaching column 1; a gradient diffusion film assembly 2; a plug head 3; wall holes 4; a hoop 5; a bump 6; a base 7; a sampling drip 8; a guide rail 9; a boss 10; a blind hole 11; a knife edge 12; a gradient diffusion film 13; a rubber layer 14; a handle 15; a blocking portion 16; an arc concave surface 17; a handle 18.
Detailed Description
The following detailed description of embodiments of the utility model is, therefore, to be taken in conjunction with the accompanying drawings, and it is to be understood that the scope of the utility model is not limited to the specific embodiments.
In the description of the present utility model, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element in question must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, in the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
Example one
Referring to fig. 1, the utility model relates to a comprehensive device for soil heavy metal migration and in-situ sampling, which comprises a leaching column 1, wherein the leaching column is fixed by a metal base 7 and is in a vertical state; specifically, the leaching column is vertically fixed by the anchor ear 5 and the base 7. The side surface of the leaching column 1 is provided with a plurality of wall holes 4 which are suitable for the gradient diffusion film assembly and can be opened and closed; at least one gradient diffusion membrane assembly 2 radially penetrating the wall aperture from the leaching column 1 and removably disposed within the leaching column; the opposite side of the wall hole 4 is provided with a mounting and positioning mechanism of the gradient diffusion module 2; a blocking head 3 for opening and closing the wall hole 4 is arranged, and the blocking head is provided with a blocking part for being plugged into the sealing section and a handle part, wherein the blocking part is in interference fit with the sealing section; the top end of the leaching column is provided with a feed inlet, and the tail end is provided with a sampling drop port 8.
Preferably, the plurality of wall holes are arranged on the side surface of the leaching column in one of a vertical arrangement and a spiral arrangement. The wall holes are equally spaced in the vertical direction. As an example, the wall holes on the side of the leaching column are vertically arranged, so that the gradient diffusion film assemblies inserted into the leaching column are also vertically arranged, and the whole device is uniform, is convenient to operate and is relatively attractive. In another example, the wall holes on the side surface of the leaching column are spirally distributed to form staggering, and each gradient diffusion film component inserted into the leaching column is also staggered, so that the phenomenon that a pollution source is blocked from diffusing to the next gradient diffusion film component by the last gradient diffusion film component in the vertical direction can be avoided.
However, whether the distribution is vertical arrangement or spiral, the intervals among the wall holes in the vertical direction are equal, so that the diffusion speed of pollutants and the like can be calculated more conveniently and accurately.
Preferably, the plugging head 3 should be inserted for plugging at the wall hole 4 where the gradient diffusion film assembly 2 is not inserted.
Referring to fig. 2, the leaching column 1 in this example has a height of 280-350mm, preferably 300mm. The leaching column can be a square tube; a preferred example is a tubular body with a lumen diameter of 40-60mm, and a preferred example is a diameter of 50mm. A blind hole 11 which is matched with the front end of the gradient diffusion film assembly 2 and used for fixing the front end of the gradient diffusion film assembly 2 is arranged on the inner side opposite to the wall hole 4 on the leaching column 1; a guide rail 9 for guiding the process of inserting the gradient diffusion film assembly 2 into the leaching column 1 is arranged between the wall hole 4 and the blind hole 11; the guide rail is specifically arranged at the corners of the wall hole 4 and the blind hole; the guide rail is matched with one surface of the gradient diffusion film assembly forming a knife edge; a boss 10 is arranged at two corners above the wall hole 4 and the blind hole 11, and a stainless steel bar is stuck on the boss 10 to form a guide rail. Because the leaching column is cylindrical, and the edge (knife edge) of the front end of the gradient diffusion film is a straight edge, the bottom of the blind hole is actually required to protrude from the side surface of the leaching column, the lateral projection 6 of the leaching column at the blind hole is actually the blind hole 11.
Referring to fig. 3-5, gradient diffusion membrane assembly 2 is inserted into the leaching column from a wall aperture in the side wall of the leaching column, and gradient diffusion membrane assembly can be inserted into the leaching column not only from a wall aperture in the side wall of the leaching column. The gradient diffusion membrane assembly is a removable component of the leaching column.
In the example, the front end of the main body part of the gradient diffusion film component is 60mm, the width of the gradient diffusion film component is 10-20mm, the width of the main body part is 5-8 mm, and the length of the handle left outside is more than 10 mm. The gradient diffusion film 13 is formed by fixing the gradient diffusion film assembly 2 in a housing, and the housing comprises: a handle 15 inserted into the front end and the main body of the gradient diffusion film assembly in the leaching column 1 and remaining outside the wall hole 4; after the gradient diffusion film assembly 2 is inserted into the leaching column 1, the main body part at the wall hole 4 wraps the rubber layer 14 and forms interference fit with the wall hole 4 to form sealing for the wall hole 4; the front end of the shell is an inclined plane to form a knife edge 12, and when the sample soil is filled in the leaching column, the knife edge 12 enables the shell to be smoothly inserted into the soil.
The whole shell is in a long block shape, one upward face is a front face, the front face is provided with a deep groove, the deep groove is positioned on the main body part, and the notch is upward. The gradient diffusion film 13 is assembled and installed in the deep groove, and a fixed retainer ring is additionally installed for pressing the gradient diffusion film 13 from the periphery of the deep groove, so that the gradient diffusion film is prevented from falling off, and leakage can be prevented from the periphery of the gradient diffusion film assembly, and pollutants are prevented from directly entering the diffusion film and the attached film without passing through the filtering film. The handle 15 is outside the wall aperture for hand-held operation.
Preferably, the number of wall holes 4 in the side walls of the leaching column is not equal, i.e. a plurality of gradient diffusion film assemblies may be inserted from the side walls.
The wall hole 4 is a pipe orifice arranged on the outer wall of the leaching column, and the axis of the pipe orifice is perpendicular to the axis of the leaching column. Specifically, the wall hole is a part protruding from the outer wall of the leaching column, the protruding part is a sealing section of the pipe orifice, the gradient diffusion film assembly is in interference fit with the sealing section in the sealing section, and one example is that a rubber layer 14 is additionally arranged at the part of the main body part, and when the gradient diffusion film assembly is inserted into the pipe orifice, the sealing is formed to prevent the solution in the leaching column from seeping out from the part.
Referring to fig. 5, the stopper head 3 is composed of a stopper portion 16 and a handle 18, the stopper portion 16 being for insertion into a sealing section of a nozzle to prevent leakage of substances in the leaching column 1. The blocking portion is in interference fit with the seal segment, and the blocking portion 16 is preferably made of a rubber material; the handle 18 is outside the nozzle for ease of handling.
When the plugging head is inserted into the pipe orifice, the front end of the plugging head is flush with the inner surface of the leaching column so as not to affect the volume of the whole leaching column (for example, the front end of the plugging head stretches into the leaching column to occupy the volume of the leaching column), so that the length of the plugging head is limited to be not more than the length of the pipe orifice, one end, which is close to the inner surface of the leaching column after penetrating into the pipe orifice, is the front end, wherein the front end is an arc-shaped concave surface 17, the radius of the arc-shaped concave surface is the same as the radius of the inner surface of the leaching column, and the arc-shaped concave surface 17 is flush with the inner surface of the leaching column after the plugging head penetrates into the leaching column, so that the smoothness of the inner surface of the leaching column is ensured.
The utility model relates to a comprehensive device for soil heavy metal migration and in-situ sampling, which can finish in-situ sampling of soil heavy metal, and one example is to insert a plurality of gradient diffusion film assemblies 2 on the side surface of a leaching column 1.
Specific examples are: firstly, sample soil polluted by heavy metal is filled in the leaching column 1, then a plurality of wall holes 4 are selected according to requirements to be inserted into the gradient diffusion film assembly 2, and then the leaching column 1 is fixed on the anchor ear 5 of the link base 7. And a collecting bottle is placed below the liquid sampling drop mouth 8, and soil liquid exuded when the water content of the soil is too high is collected. The experimental setup was started to rest.
And when the standing time reaches the optimal adsorption time of the DGT film, the gradient diffusion film assembly 2 is extracted, and the gradient diffusion film 13 in the gradient diffusion film assembly is taken out for detection, so that the heavy metal concentration of the sample soil is obtained.
Example two
The utility model relates to a comprehensive device for soil heavy metal migration and in-situ sampling, which can be used for measuring the biological effective state content and diffusion flux of heavy metal ions at different distances perpendicular to a pollution source.
Specific examples are: firstly, sample soil is filled in the leaching column 1, then a plurality of wall holes 4 are selected according to experimental requirements to be inserted into the gradient diffusion film assembly 2, and then the leaching column 1 is fixed on the anchor ear 5 of the link base 7. The leaching column 1 is also provided with a solution tank (containing heavy metal ion solution), the bottom of the solution tank is provided with an infusion pipeline connected with the leaching column, so that the solution in the solution tank is dripped into the leaching column, the inner bottom of the leaching column 1 is provided with a filter screen near the liquid sampling drop 8, and a collecting bottle is placed below the liquid sampling drop 8 to collect the leaching solution. The above process can be performed by arranging a plurality of leaching columns in parallel, and a control experiment is performed.
Sampling can be performed after a certain time according to the requirements, the gradient diffusion film assembly 2 is extracted, and the gradient diffusion film 13 in the gradient diffusion film assembly is taken out for detection, so that the permeability and the permeation speed of heavy metal ions in the soil of the sample can be known; by periodically sampling the liquid in the collection bottle, a solute penetration curve can be drawn to know the migration condition of the heavy metal.
In order to observe the sample in the leaching column and observe the experimental operation process, the leaching column 1 is made of transparent materials, and in order to facilitate processing, the leaching column can be made of acrylic materials. However, when it is uncertain whether the acrylic material reacts with the test solvent, the leaching column can be made of stainless steel material, and a preferred example is made of glass material, which has stable properties and is favorable for observing the internal condition, and is an ideal material, but for processing and manufacturing the complex-structure article, the glass material has the characteristics of difficult processing or high processing cost. Therefore, the leaching column is made of different materials according to the type of the solvent.
In the description of the present specification, the descriptions of the terms "one embodiment," "example," "specific example," and the like, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The above-described embodiments are intended to illustrate the present utility model, not to limit it, and any modifications and variations made thereto fall within the spirit of the utility model and the scope of the claims.
Claims (10)
1. A soil heavy metal migration process and in-situ sampling comprehensive device comprises: a leaching column (1) arranged vertically; the leaching column is fixed by a metal base (7) and is in a vertical state;
the leaching column is characterized in that a plurality of wall holes (4) which are adapted to the gradient diffusion film component (2) and can be opened and closed are arranged on the side surface of the leaching column (1);
at least one gradient diffusion membrane assembly (2) radially penetrating the wall aperture (4) from the leaching column (1) and removably disposed within the leaching column.
2. The comprehensive device for soil heavy metal migration process and in-situ sampling as claimed in claim 1, wherein a plurality of wall holes (4) are arranged on the side surface of the leaching column (1) in a vertical arrangement and distribution manner;
the wall holes (4) are equally spaced in the vertical direction.
3. The comprehensive device for soil heavy metal migration process and in-situ sampling as claimed in claim 1, wherein the gradient diffusion film assembly (2) is formed by fixing a gradient diffusion film (13) in a shell;
the housing includes: a handle inserted into the front end and the main body part of the gradient diffusion film component in the leaching column and remaining outside the wall hole (4);
after the gradient diffusion film assembly (2) is inserted into the leaching column (1), the main body part at the wall hole (4) and the wall hole (4) form interference fit to form sealing of the wall hole (4).
4. A soil heavy metal migration process and in-situ sampling integrated device as claimed in claim 3, wherein the front end of the gradient diffusion film assembly (2) is provided with a bevel which is convenient to insert, and the bevel forms a knife edge (12).
5. The comprehensive device for soil heavy metal migration process and in-situ sampling as claimed in claim 4, wherein a blind hole (11) which is matched with the front end of the gradient diffusion film assembly (2) and used for fixing the front end of the gradient diffusion film assembly (2) is arranged on the opposite inner side of the upper wall hole (4) of the leaching column (1).
6. The comprehensive soil heavy metal migration process and in-situ sampling device according to claim 5, wherein a guide rail (9) for guiding the process of inserting the gradient diffusion film assembly (2) into the leaching column (1) is arranged between the wall hole (4) and the blind hole (11);
the guide rail is specifically arranged at the corners of the wall hole (4) and the blind hole; the guide rail (9) is matched with one surface of the gradient diffusion film assembly (2) forming a knife edge (12).
7. The comprehensive device for the migration process and in-situ sampling of the heavy metals in the soil according to claim 1, wherein the leaching column (1) is a round tube or a square tube, a cavity for loading materials is arranged in the middle, a material inlet is arranged above the leaching column, and a liquid sampling drop is arranged at the bottom end of the leaching column; the wall hole (4) comprises a pipe orifice arranged on the outer wall of the leaching column (1), and the axis of the pipe orifice is perpendicular to the axis of the leaching column (1).
8. The comprehensive soil heavy metal migration process and in-situ sampling device according to claim 7, wherein the pipe orifice protrudes outwards from the side wall of the leaching column (1), the protruding part is a sealing section of the pipe orifice, and the gradient diffusion film assembly (2) is in interference fit with the sealing section.
9. A soil heavy metal migration process and in-situ sampling integrated device as claimed in claim 8, characterized in that a plug head (3) for opening and closing the wall hole (4) is provided, the plug head (3) having a plug portion (16) for plugging into the sealing section and a handle (18), wherein the plug portion (16) is in an interference fit with the sealing section.
10. The integrated device for soil heavy metal migration process and in-situ sampling as claimed in claim 9, wherein the length of the plugging head (3) is not greater than the length of the pipe orifice, so that one end, close to the inner surface of the leaching column (1), of the plugging head is a front end after the plugging head is inserted into the pipe orifice, and the front end is an arc-shaped concave surface (17), the radius of the arc-shaped concave surface (17) is the same as the radius of the inner surface of the leaching column (1), and the arc-shaped concave surface (17) is flush with the inner surface of the leaching column (1) after the plugging head (3) penetrates into the leaching column (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321481640.XU CN220289315U (en) | 2023-06-12 | 2023-06-12 | Soil heavy metal migration process and in-situ sampling comprehensive device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321481640.XU CN220289315U (en) | 2023-06-12 | 2023-06-12 | Soil heavy metal migration process and in-situ sampling comprehensive device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220289315U true CN220289315U (en) | 2024-01-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321481640.XU Active CN220289315U (en) | 2023-06-12 | 2023-06-12 | Soil heavy metal migration process and in-situ sampling comprehensive device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220289315U (en) |
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2023
- 2023-06-12 CN CN202321481640.XU patent/CN220289315U/en active Active
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