Device for adsorbing organic pollutants by using biochar composite material

Abstract

The utility model discloses a device for adsorbing organic pollutants by a biochar composite material, which comprises a filtering cabin, a water passing cabin is arranged on the upper half part of the outer side of the filtering cabin in a communicated manner, a water outlet is formed in the bottom of the filtering cabin, the device further comprises a top water inlet of the water passing cabin, and a detachably connected filtering plate is arranged in the water passing cabin; the stirring assembly is rotatably arranged in the filtering cabin through a bearing, and the stirring assembly is connected with the output end of the driving motor; the limiting components are distributed on the middle lower half part of the inner wall of the filtering cabin in a circumferential matrix manner; the adsorption assembly is detachably connected into the filtering cabin through a limiting assembly, and a window is formed in the outer wall, opposite to the adsorption assembly, of the filtering cabin. According to the device for adsorbing the organic pollutants through the biochar composite material, the problems that in the existing adsorption mode that a biochar rod is installed on a rotating rod, abrasion, crushing and the like are prone to occurring, and the operation and maintenance cost is greatly increased are solved.

Description

Technical Field

[0001] This utility model relates to the field of organic pollutant technology, specifically to a device for adsorbing organic pollutants using biochar composite materials. Background Technology

[0002] Organic pollutants refer to pollutants existing in the form of organic compounds, characterized by their wide variety, complex structure, and diverse properties. Organic pollutants are difficult to degrade in the environment and can be transferred through the food chain and bioaccumulate, posing a serious threat to ecosystems and human health. Therefore, effective treatment technologies are an important direction of current environmental research.

[0003] Most existing technologies employ biochar rod adsorption. For example, in application number 202421194978.1, a filtration and removal device for antibiotic wastewater uses a stirring assembly to rotate several biochar rods, allowing them to fully contact the wastewater. However, this device has a drawback: the grooves on the outer wall of the rotating rod hold several biochar rods together, causing them to rotate with the rod. The biochar rods are attached to the grooves at their ends, requiring precise insertion of each rod into its corresponding groove during installation. This is particularly cumbersome and time-consuming when there are many grooves. Furthermore, this method of attachment can cause the biochar rods to detach from the grooves due to centrifugal force and water flow impact when the rotating rod rotates at high speed, leading to wear and breakage, which significantly increases operating and maintenance costs. Utility Model Content

[0004] One object of this invention is to solve at least the aforementioned problems and / or defects, and to provide at least the advantages described below.

[0005] To achieve these objectives and other advantages according to this utility model, a device for adsorbing organic pollutants using biochar composite material is provided, comprising: a filter chamber, the upper half of which is connected to a water passage chamber, and a water outlet at the bottom of the filter chamber; and further comprising:

[0006] The top of the water passage chamber is provided with a water inlet, and the interior of the water passage chamber is provided with a detachable filter plate.

[0007] A stirring assembly is rotatably mounted inside the filter chamber via bearings, and the stirring assembly is connected to the output end of a drive motor;

[0008] The limiting components are distributed in a circular matrix in the lower half of the inner wall of the filter chamber;

[0009] An adsorption assembly capable of being filled with biochar composite material is detachably connected to the filter chamber via a limiting component, and the filter chamber has a window on the outer wall of the adsorption assembly capable of being filled with biochar composite material.

[0010] Preferably, the structure of the water passage chamber includes:

[0011] An annular chamber is installed on the upper outer side of the filter chamber, and the inner wall of the annular chamber is provided with a ring of recesses. The bottom surface of the annular chamber has a certain inclination angle, and multiple sets of through holes are opened at the lowest point of the bottom surface where it fits against the side wall of the filter chamber.

[0012] The filter plate is connected by a protruding part at one end and a concave part at the other end.

[0013] An annular hatch cover is detachably connected to the annular compartment, and the annular hatch cover is provided with the water inlet.

[0014] Preferably, the structure of the stirring assembly includes:

[0015] Rotating shaft I is mounted inside the filter chamber via bearings, and rotating shaft I is connected to the output end of the drive motor;

[0016] The stirring blade assembly I consists of multiple sets of inclined rectangular blades arranged in a circumferential matrix. The stirring blade assembly I is mounted on the rotating shaft I and is located in the middle and bottom sections of the filter chamber.

[0017] The stirring blade group II consists of square pieces arranged in a circumferential matrix, which are vertically inserted into the edge of a disc. The stirring blade group II is mounted on the rotating shaft I and is located between the stirring blade groups I.

[0018] Preferably, the adsorption component that can be filled with biochar composite material is a hollow wedge-shaped triangular block structure with uniformly distributed filter holes on each side, and the side of the adsorption component that can be filled with biochar composite material that is in contact with the inner wall of the filter chamber is an arc-shaped surface.

[0019] The upper and lower halves of the adsorption component that are attached to the inner wall are provided with arc-shaped sliders, and the side of the adsorption component that can be filled with biochar composite material is provided with a sliding door.

[0020] Preferably, the structure of the limiting component includes:

[0021] The limiting ring I is fixedly installed in a ring shape in the middle of the inner wall of the filter chamber, and the lower half is provided with a groove I. The limiting ring I is provided with a semi-circular notch at the window position.

[0022] The limiting ring II is fixedly installed in a ring shape on the lower part of the inner wall of the filter chamber, and has a groove II on it. The limiting ring II has a semi-circular notch at the window position.

[0023] The adsorption component that can be filled with biochar composite material is detachably connected to the filter chamber through a limiting component in the following way: the adsorption component is attached to the inner wall of the filter chamber, which will cause the arc-shaped slider to slide into groove I and groove II.

[0024] This utility model has at least the following beneficial effects:

[0025] This device uses a stirring component to ensure sufficient contact between water and the adsorption component that can be filled with biochar composite material, thereby accelerating the adsorption rate and improving the removal efficiency of organic pollutants. At the same time, both the filter plate and the adsorption component that can be filled with biochar composite material are detachable, which facilitates the periodic cleaning of impurities on the filter plate and the replacement of the biochar inside the adsorption component that can be filled with biochar composite material, ensuring the long-term stable operation of the device and reducing equipment operating costs.

[0026] Other advantages, objectives and features of this invention will be partly apparent from the following description, and partly understood by those skilled in the art through study and practice of this invention. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall cross-sectional structure of this utility model;

[0028] Figure 2 This is a schematic diagram of the overall structure of this utility model;

[0029] Figure 3 This is an enlarged cross-sectional view of the lower half of the filter chamber of this utility model.

[0030] Figure 4 This is a schematic diagram of the X-axis cross-sectional structure of this utility model;

[0031] Figure 5 This is a schematic diagram of the Y-axis cross-sectional structure of this utility model;

[0032] Figure 6 For the present utility model Figure 5 Schematic diagram of the cross-sectional structure of the sliding door;

[0033] The diagram is marked with the following symbols: 1. Filter chamber, 11. Outlet, 12. Observation window, 13. Limiting groove, 2. Water passage chamber, 21. Inlet, 22. Annular chamber, 23. Recess, 24. Through hole, 25. Annular cover, 3. Filter plate, 31. Protrusion, 4. Stirring assembly, 41. Rotating shaft I, 42. Stirring blade group I, 43. Inclined rectangular blade, 44. Stirring blade group II, 45. Disc, 46. Square plate, 5. Drive motor, 6. Limiting assembly, 61. Limiting ring I, 62. Groove I, 63. Limiting ring II, 64. Groove II, 7. Adsorption assembly that can be filled with biochar composite material, 71. Filter hole, 72. Arc-shaped slider, 73. Sliding door, 74. Rectangular chute, 8. Window, 81. Handle. Detailed Implementation

[0034] The present invention will now be described in further detail with reference to the accompanying drawings, so that those skilled in the art can implement it based on the description.

[0035] It should be understood that terms such as “having,” “comprising,” and “including” as used herein do not exclude the presence or addition of one or more other elements or combinations thereof.

[0036] It should be noted that in the description of this utility model, the terms indicating orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0037] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "installed", "equipped with", "sleeved / connected", "connected", etc., should be interpreted broadly. For example, "connection" 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 a connection within two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0038] Furthermore, in this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Moreover, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0039] The following is a detailed description of this novel experimental device with reference to the accompanying drawings:

[0040] Figure 1-6 This invention discloses a device for adsorbing organic pollutants using biochar composite material, comprising: a filter chamber 1, with a water passage chamber 2 connected to its upper outer side, and a water outlet 11 at the bottom of the filter chamber 1; and further comprising:

[0041] The top of the water passage chamber 2 is provided with a water inlet 21, and the interior of the water passage chamber 2 is provided with a detachable filter plate 3.

[0042] The stirring assembly 4 is rotatably mounted in the filter chamber 1 via a bearing, and the stirring assembly 4 is connected to the output end of the drive motor 5;

[0043] The limiting component 6 is distributed in a circular matrix in the lower half of the inner wall of the filter chamber 1;

[0044] The adsorption component 7, which can be filled with biochar composite material, is detachably connected to the filter chamber 1 via a limiting component 6, and the filter chamber 1 has a window 8 on its outer wall relative to the adsorption component 7, which can be filled with biochar composite material.

[0045] Working principle:

[0046] Before using the device, the operator opens window 8 and fixes multiple sets of adsorption components 7 that can be filled with biochar composite material into the filter chamber 1 through the limiting component 6.

[0047] When the device is put into use: the operator sends water containing organic pollutants into the water chamber 2 through the inlet 21. At this time, the filter plate 3 in the water chamber 2 can perform preliminary filtration of larger impurity particles and suspended solids in the water due to its large pore size.

[0048] After the initial filtration is completed, the water flows into the filter chamber 1 for the second filtration preparation. The drive motor 5 is started by the external power supply, which drives the stirring component 4 to rotate in the filter chamber 1. The stirring component 4 makes the water in the filter chamber 1 circulate. The uniform water flow distribution allows organic pollutants to come into contact with the adsorption component 7 that can be filled with biochar composite material more evenly, thereby improving the adsorption efficiency.

[0049] When water containing organic pollutants flows through the adsorption component 7, which can be filled with biochar composite material, the water is purified through the physical or chemical adsorption of the internal biochar composite material (which can be a commercially available product selected according to the wastewater to be treated, or, as in application number: CN201811015218.9, a biochar-iron porphyrin composite material that can efficiently activate persulfate to generate sulfate free radicals, thereby effectively degrading perfluorooctanoic acid in the water; or, as in application number: CN202110414227.0, an iron-based biochar sponge composite material that has high adsorption efficiency for phosphate in the water; in other cases, the specific type of organic pollutant contained in the water to be treated can be selected). The purified water is discharged from the outlet 11 at the bottom of the filter chamber 1.

[0050] After using the device, the operator can open the window 8 to remove the multiple sets of adsorption components 7 that can be filled with biochar composite material for internal replacement. The operation is simple and the multiple sets design can greatly increase the adsorption capacity and service life.

[0051] Among them, ① in actual use, a water level observation window 12 is set on the outside of the filter chamber 1 to avoid the water level being higher than the connection between the water passage chamber 2 and the filter chamber 1, which may cause backflow and affect the filtration effect.

[0052] ② In actual use, a handle 81 is added to the window 8 to facilitate the use of the operator, and the actual opening size of the window 8 is larger than the size of the adsorption component 7 that can be filled with biochar composite material, making it easy to take out;

[0053] Meanwhile, sealing strips (such as EPDM rubber strips, which have good aging resistance, weather resistance and sealing performance) are installed on the edge of window 8. When window 8 is closed, the strips are squeezed and deformed to fill the gaps, prevent air and water penetration, ensure the airtightness of filter chamber 1, and prevent outside air from entering and affecting the adsorption effect or causing secondary pollution of water quality.

[0054] In summary, this device uses the stirring component 4 to ensure sufficient contact between water and the adsorption component 7 filled with biochar composite material, thereby accelerating the adsorption rate and improving the removal efficiency of organic pollutants. At the same time, both the filter plate 3 and the adsorption component 7 filled with biochar composite material are detachable, which facilitates the periodic cleaning of impurities on the filter plate 3 and the replacement of the biochar composite material inside the adsorption component 7, ensuring the long-term stable operation of the device and reducing equipment operating costs.

[0055] As described above, the structure of the water-passing chamber 2 includes:

[0056] An annular chamber 22 is installed on the upper outer side of the filter chamber 1, and the inner wall of the annular chamber 22 is provided with a ring of recesses 23. The bottom surface of the annular chamber 22 has a certain inclination angle, and multiple sets of through holes 24 are opened at the lowest position of the bottom surface where it fits against the side wall of the filter chamber 1.

[0057] The filter plate 3 is connected to the concave portion 23 by a protruding part 31 at one end;

[0058] The annular hatch cover 25 is detachably connected to the annular chamber 22, and the annular hatch cover 25 is provided with the water inlet 21.

[0059] Working principle:

[0060] The operator introduces the water to be treated into the annular cover 25 through the inlet 21. The water flows into the annular chamber 22, where larger particles of impurities are intercepted by the filter plate 3, achieving preliminary filtration. Due to the inclined angle of the bottom surface of the annular chamber 22, the filtered water flows to the lowest position of the bottom surface under the action of gravity, and then flows into the filter chamber 1 through multiple sets of through holes 24 that are in contact with the side wall of the filter chamber 1 (multiple sets of through holes 24 effectively increase the flow rate, and even if a single through hole 24 is blocked by impurities that are not completely filtered, it will not affect the overall use), for subsequent adsorption treatment.

[0061] Among them, ① the filter plate 3 and the annular chamber 22 are connected by a snap-fit ​​connection. By snapping the protruding part 31 of the filter plate 3 into the concave part 23 of the annular chamber 22, the operator can clean or replace the filter plate 3 at any time. The operation is simple and convenient and facilitates daily maintenance.

[0062] ② In actual use, the detachable connection between the annular cover 25 and the annular chamber 22 is as follows: there is a limiting groove 13 around the edge of the top surface of the filter chamber 1, and the size of the annular cover 25 is larger than that of the annular chamber 22, so that the two ends of the annular cover 25 can be locked on the limiting groove 13 and the outer wall of the annular chamber 22.

[0063] Meanwhile, to increase sealing, a sealing ring is added to the position where the annular hatch 25 fits into both.

[0064] ③ The inclined design of the bottom surface of the annular chamber 22 and the location layout of the through hole 24 are conducive to the natural flow of water to the filter chamber 1, reducing the need for additional power equipment and lowering the cost of the device.

[0065] As described above, the structure of the stirring assembly 4 includes:

[0066] Rotating shaft I41 is mounted in filter chamber 1 via bearings, and rotating shaft I41 is connected to the output end of drive motor 5;

[0067] The stirring blade assembly I42 is composed of multiple sets of inclined rectangular blades 43 arranged in a circumferential matrix. The stirring blade assembly I42 is mounted on the rotating shaft I41 and is located in the middle and bottom sections of the filter chamber 1.

[0068] The stirring blade assembly II 44 consists of square pieces 46 arranged in a circumferential matrix and inserted vertically into the edge of a disk 45. The stirring blade assembly II 44 is mounted on the rotating shaft I 41 and is located between the stirring blade assemblies I 42.

[0069] Working principle:

[0070] The drive motor 5 is started by an external power supply, and its output end drives the rotating shaft I41 to rotate in the filter chamber 1, which in turn drives the stirring blade group I42 and the stirring blade group II44 to rotate.

[0071] At this time, the stirring blade group I 42 located in the middle and bottom sections cooperate with each other, and pushes the liquid in the filter chamber 1 to generate a large range of axial flow through the inclined rectangular blade 43, so that the water containing organic pollutants circulates up and down in the chamber, and achieves full mixing with the biochar composite material in the adsorption component 7.

[0072] Simultaneously, when the disc 45 on the stirring blade assembly II 44 rotates, it drives the square plate 46 to rotate. The square plate 46 exerts a radial pushing effect on the water containing organic pollutants, allowing the water to enter the adsorption assembly 7 laterally. This makes the adsorption process more uniform and efficient, improving the efficiency of adsorbing organic pollutants.

[0073] Among them, ① the actual distance between the two sets of stirring blades I42 installed vertically is greater than the vertical height of the adsorption component 7; the lateral radius of stirring blade group II44 is smaller than the distance between the adsorption component 7 and the rotating shaft I41.

[0074] As described above, the adsorption component 7 that can be filled with biochar composite material is a hollow wedge-shaped triangular block structure with uniformly distributed filter holes 71 on each side, and the side of the adsorption component 7 that can be filled with biochar composite material that is attached to the inner wall of the filter chamber 1 is an arc-shaped surface.

[0075] The upper and lower halves of the adsorption component 7 that are attached to the inner wall are provided with arc-shaped sliders 72, and the side of the adsorption component 7 that can be filled with biochar composite material is provided with a sliding door 73.

[0076] Working principle:

[0077] After water containing organic pollutants flows into the filter chamber 1, it flows back and forth through the filter holes 71 under the action of the stirring component 4, so that the organic pollutants in the water are effectively adsorbed by the biochar composite material.

[0078] In actual use, the sliding door 73 can be used in the following ways:

[0079] A concave rectangular groove 74 (which can also be understood as having a sandwich layer) is provided on one side of the wedge-shaped triangular block structure, as can be seen in the details. Figure 6 :

[0080] When the sliding door 73 is open, the operator slides the sliding door 73 vertically into the rectangular slide groove 74 to achieve concealment. When the sliding door 73 is closed, a gap is formed, which can facilitate and quickly complete the replacement of the internal biochar composite material.

[0081] In the closed state of the sliding door 73, and after the replacement is completed, the sliding door 73 is pulled out of the rectangular slide groove 74 to close the notch position to prevent the internal material from falling out. At the same time, the upper end of the sliding door 73 is engaged with the lower end of the rectangular slide groove 74, so that the sliding door 73 is restricted to the notch position and will not fall off during use.

[0082] In summary, the uniformly distributed filter pores 71 ensure effective contact between water and biochar composite material, further enhancing the adsorption effect; the arc-shaped design that fits the inner wall of the filter chamber 1 allows the adsorption component 7, which can be filled with biochar composite material, to better match the shape of the filter chamber 1, making the installation of the adsorption component 7, which can be filled with biochar composite material, more stable.

[0083] Furthermore, the adsorption component 7 of this device, which is detachable and can be filled with biochar composite material, can be equipped with a suitable biochar composite material according to the type and concentration of organic pollutants in the water to be treated. For example, application number: CN201811015218.9, a biochar-iron porphyrin composite material, can efficiently activate persulfate to generate sulfate free radicals, thereby effectively degrading perfluorooctanoic acid in water; or application number: CN202110414227.0, an iron-based biochar sponge composite material, which has high adsorption efficiency for phosphate in water. In other cases, the appropriate biochar composite material can be selected based on the specific types of organic pollutants to be treated.

[0084] As described above, the structure of the limiting component 6 includes:

[0085] The limiting ring I61 is fixedly installed in a ring shape in the middle of the inner wall of the filter chamber 1, and the lower half is provided with a groove I62. The limiting ring I61 is provided with a semi-circular notch at the window 8 position.

[0086] The limiting ring II 63 is fixedly installed in a ring shape on the lower part of the inner wall of the filter chamber 1, and has a groove II 64 on it. The limiting ring II 63 has a semi-circular notch at the window 8 position.

[0087] The adsorption component 7, which can be filled with biochar composite material, is detachably connected to the filter chamber 1 via the limiting component 6 in such a way that the adsorption component 7 fits against the inner wall of the filter chamber 1, causing the arc-shaped slider 72 to slide into the groove I 62 and the groove II 64.

[0088] Working principle:

[0089] When installing the adsorption assembly 7, which can be filled with biochar composite material, into the filter chamber 1, the operator aligns the upper and lower arc-shaped sliders 72 of the adsorption assembly 7 with the grooves I 62 and II 64, so that the adsorption assembly 7 slides into the limiting rings I 61 and II 63. When it is necessary to maintain, replace the biochar composite material, or clean the filter chamber 1, the adsorption assembly 7 can be easily slid out along the grooves I 62 and II 64. The operation is simple and quick, improving the maintainability of the device.

[0090] The limiting ring II 63 has a semi-circular notch at the window 8 position, and the limiting ring I 61 has a semi-circular notch at the window 8 position. The meanings of the two semi-circular notches are as follows:

[0091] No limiting rings II 63 and I 61 are set at window 8, so that after the operator opens window 8, he can slide the adsorption component 7 along the grooves I 62 and II 64 to the semi-circular notch, so that the adsorption component 7 can be removed from the limiting component 6 and the internal material can be replaced.

[0092] Although the embodiments of this utility model have been disclosed above, they are not limited to the applications listed in the specification and embodiments. They can be applied to various fields suitable for this utility model. For those skilled in the art, other modifications can be easily made. Therefore, without departing from the general concept defined by the claims and their equivalents, this utility model is not limited to the specific details and the illustrations shown and described herein.

Claims

1. A device for adsorbing organic pollutants using a biochar composite material, comprising: A filter chamber, wherein a water passage chamber is connected to the upper half of its outer side, and a water outlet is provided at the bottom of the filter chamber, characterized in that it further includes: The top of the water passage chamber is provided with a water inlet, and the interior of the water passage chamber is provided with a detachable filter plate. A stirring assembly is rotatably mounted inside the filter chamber via bearings, and the stirring assembly is connected to the output end of a drive motor; The limiting components are distributed in a circular matrix in the lower half of the inner wall of the filter chamber; An adsorption assembly capable of being filled with biochar composite material is detachably connected to the filter chamber via a limiting component, and the filter chamber has a window on the outer wall of the adsorption assembly capable of being filled with biochar composite material.

2. The device for adsorbing organic pollutants using biochar composite material according to claim 1, characterized in that, The structure of the water-passing chamber includes: An annular chamber is installed on the upper outer side of the filter chamber, and the inner wall of the annular chamber is provided with a ring of recesses. The bottom surface of the annular chamber has a certain inclination angle, and multiple sets of through holes are opened at the lowest point of the bottom surface where it fits against the side wall of the filter chamber. The filter plate is connected by a protruding part at one end and a concave part at the other end. An annular hatch cover is detachably connected to the annular compartment, and the annular hatch cover is provided with the water inlet.

3. The device for adsorbing organic pollutants using biochar composite material according to claim 1, characterized in that, The structure of the stirring assembly includes: Rotating shaft I is mounted inside the filter chamber via bearings, and rotating shaft I is connected to the output end of the drive motor; The stirring blade assembly I consists of multiple sets of inclined rectangular blades arranged in a circumferential matrix. The stirring blade assembly I is mounted on the rotating shaft I and is located in the middle and bottom sections of the filter chamber. The stirring blade group II consists of square pieces arranged in a circumferential matrix, which are vertically inserted into the edge of a disc. The stirring blade group II is mounted on the rotating shaft I and is located between the stirring blade groups I.

4. The device for adsorbing organic pollutants using biochar composite material according to claim 1, characterized in that, The adsorption component that can be filled with biochar composite material is a hollow wedge-shaped triangular block structure with uniformly distributed filter holes on each side, and the side of the adsorption component that can be filled with biochar composite material that is in contact with the inner wall of the filter chamber is an arc-shaped surface. The upper and lower halves of the adsorption component that are attached to the inner wall are provided with arc-shaped sliders, and the side of the adsorption component that can be filled with biochar composite material is provided with a sliding door.

5. The apparatus for adsorbing organic pollutants using biochar composite material according to claim 4, characterized in that, The structure of the limiting component includes: The limiting ring I is fixedly installed in a ring shape in the middle of the inner wall of the filter chamber, and the lower half is provided with a groove I. The limiting ring I is provided with a semi-circular notch at the window position. The limiting ring II is fixedly installed in a ring shape on the lower part of the inner wall of the filter chamber, and has a groove II on it. The limiting ring II has a semi-circular notch at the window position. The adsorption component that can be filled with biochar composite material is detachably connected to the filter chamber through a limiting component in the following way: the adsorption component is attached to the inner wall of the filter chamber, which will cause the arc-shaped slider to slide into groove I and groove II.

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