Multistage water body microplastic removal device
Patent Information
- Application Number
- CN202520794981.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-24
- Publication Date
- 2026-08-18
- Estimated Expiration
- 2035-04-24
AI Technical Summary
[0006]本申请实施例提供了一种水体微塑料多级清除装置，可以解决现有技术如何低成本过滤水体微塑料的问题
[0024]与现有技术相比，本申请实施例提供的技术方案带来的有益效果至少包括：
Smart Images
Figure CN224646793U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of water filtration equipment, and in particular to a multi-stage water microplastic removal device. Background Technology
[0002] Microplastic pollution in water bodies—the widespread distribution of plastic fragments or particles smaller than 5 millimeters in size—has become a significant environmental problem worldwide. These microplastics not only severely damage aquatic ecosystems but also pose a potential threat to human health through the food chain. Therefore, developing effective microplastic removal technologies is of paramount importance.
[0003] Currently, microplastic pollution in water bodies is mainly removed through three methods: physical separation, chemical degradation, and biological treatment. Among these, physical separation typically uses melt-blown filter cartridges to filter microplastics in water. However, melt-blown filter cartridges are consumables and are relatively expensive, resulting in high treatment costs for microplastics in water bodies.
[0004] It should be noted that the information disclosed in the background section above is only used to enhance the understanding of the background of this disclosure, and therefore may include information that does not constitute prior art known to those skilled in the art. Utility Model Content
[0005] (a) Technical problems to be solved
[0006] This application provides a multi-stage water microplastic removal device, which can solve the problem of how to filter water microplastics at low cost in the prior art.
[0007] (II) Technical Solution
[0008] To solve the above-mentioned technical problems, this application provides the following technical solution:
[0009] A multi-stage water microplastic removal device is provided, the multi-stage water microplastic removal device comprising:
[0010] The carrier is provided with an inlet and an outlet;
[0011] A vortex-induced air flotation machine is installed on the carrier and is provided with an inlet end and an outlet end. The inlet end is connected to the inlet through a pipe.
[0012] A filter box has a first direction and a second direction that are perpendicular to each other. At least two partitions are alternately arranged on the two inner walls of the filter box that are opposite each other along the first direction. Two adjacent partitions in the first direction are spaced apart in the first direction and staggered in the second direction. All the partitions divide the internal space of the filter box into at least two chambers. Each chamber is connected to the other chambers in sequence along the first direction of the filter box. The first chamber is connected to the outlet of the vortex air flotation machine through a pipe. Each chamber is provided with a loofah sponge.
[0013] An adsorption box is provided with an inlet and an outlet. The inlet is connected to the chamber at the end of the filter box via a pipe, and the outlet is connected to the water outlet via a pipe. A spiral guide is provided between the inlet and the outlet of the adsorption box. The spiral guide has a guide groove that extends spirally along its length, and biochar is provided on at least the wall of the guide groove.
[0014] In some embodiments, the carrier has a density less than that of the water and is configured to be suspended in the water; the water microplastic multi-stage removal device further includes a support for fixing the carrier.
[0015] In some embodiments, the filter box has a cuboid structure, the first direction is the length direction of the filter box, and the second direction is the width direction of the filter box.
[0016] In some embodiments, the two inner walls of the filter box that are positioned opposite each other are the two inner walls in the width direction of the filter box.
[0017] In some embodiments, the loofah sponge is disposed on the partition and fills the cavity.
[0018] In some embodiments, the surface of the loofah sponge is provided with a water-repellent wax coating.
[0019] In some embodiments, the spiral guide is cylindrical, and the guide groove is disposed on the outer peripheral surface of the spiral guide.
[0020] In some embodiments, the longitudinal direction of the spiral guide is parallel to the pipe connecting the inlet to the chamber at the end of the filter box.
[0021] In some embodiments, the water inlet is provided with a filter screen.
[0022] In some embodiments, the adsorption tank is provided with a backwashing device configured to drive water to flow from the outlet to the inlet.
[0023] (III) Beneficial Effects
[0024] Compared with the prior art, the beneficial effects of the technical solution provided in this application include at least the following:
[0025] Highly efficient solid-liquid separation: After water enters the vortex-flotation unit through the inlet, the unit distributes microbubbles evenly throughout the water via a diffuser impeller. These microbubbles effectively adsorb microplastics and other impurities in the water, achieving highly efficient solid-liquid separation. This process significantly improves the removal efficiency of microplastics in the initial filtration stage, providing cleaner water for subsequent treatment.
[0026] Multi-stage filtration and low-cost advantages: Water treated by the vortex air flotation machine enters the filter box, which is formed by multiple partitions creating several chambers connected sequentially along a first direction. Each chamber contains a loofah sponge. As the water flows through these chambers, the loofah sponge intercepts and adsorbs some of the microplastics in the water, achieving a multi-stage filtration effect. The partition design not only slows down the water flow and lengthens the flow path but also increases the filtration time, thereby improving the overall filtration effect. Equally important, loofah sponge, as a filter material, has a lower cost compared to traditional filter cartridges, significantly reducing the operating cost of the device.
[0027] Optimized Adsorption Performance and Reduced Consumables: After treatment in the filtration tank, water enters the adsorption tank. The spiral guide within the adsorption tank, with its unique channel design, extends the residence time of microplastics within the device. This design allows different forms of microplastics in the water to be effectively captured by the biochar on the channel walls from different angles, significantly improving microplastic removal efficiency. Simultaneously, the channel increases the adsorption area, further enhancing adsorption performance. Furthermore, due to the increased adsorption area, the spiral guide can adsorb more microplastics, reducing the frequency of replacement and thus decreasing consumable usage, further lowering the cost of microplastic treatment in water.
[0028] In summary, the multi-stage microplastic removal device for water bodies of this application achieves efficient removal of microplastics from water bodies through the synergistic effect of the vortex air flotation machine, filter box, and adsorption box, while reducing treatment costs.
[0029] In operation, the multi-stage microplastic removal device for water in this application introduces water into a vortex-flotation machine through the inlet. The vortex-flotation machine uses a diffuser impeller to evenly distribute microbubbles throughout the primary filtration tank, adsorbing microplastics and other impurities to achieve solid-liquid separation. The separated water then enters a filter box from the outlet. The filter box is divided into multiple chambers connected sequentially along a first direction by partitions. Each chamber contains a loofah sponge. As the water passes through these chambers, some microplastics are intercepted and adsorbed by the loofah sponge, achieving a filtration effect. The partitions slow down the water flow and extend the water path, increasing filtration time and improving the filtration effect. Furthermore, the loofah sponge is less expensive than traditional filter cartridges. After being filtered in the filter box, the water enters the adsorption box. The spiral guide within the adsorption box extends the residence time of microplastics through the guide channels, allowing different forms of microplastics in the water to be captured by the biochar on the channel walls from different angles. Simultaneously, the guide channels increase the adsorption area, improving the microplastic removal effect and reducing the replacement frequency of the spiral guide, thus reducing consumable usage and lowering the cost of microplastic treatment. It can be seen that the multi-stage microplastic removal device for water in this application can filter microplastics in water and reduce treatment costs. Attached Figure Description
[0030] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0031] Figure 1 This is a schematic diagram of a multi-stage water microplastic removal device in an embodiment of this application;
[0032] Figure 2 This is a schematic diagram of the filter box after the loofah sponge has been removed in an embodiment of this application;
[0033] Figure 3 This is a perspective view of the spiral guide component in the embodiments of this application.
[0034] Figure label:
[0035] Carrier 1, Inlet 11, Outlet 12, Filter screen 13;
[0036] 2. Vortex-type air flotation machine, inlet end 21, outlet end 22;
[0037] Filter box 3, partition 31, inner wall 32, chamber 33, loofah sponge 34, first direction 35, second direction 36, filtration path 37;
[0038] Adsorption box 4, inlet 41, outlet 42, spiral guide 43, guide channel 431, biochar 432, backwashing device 44.
[0039] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to particular embodiments. Detailed Implementation
[0040] The present disclosure will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the scope of the disclosure. Furthermore, it should be noted that, for ease of description, only the parts relevant to the present disclosure are shown in the accompanying drawings.
[0041] It should be noted that, where there is no conflict, the embodiments and features described in this disclosure can be combined with each other. The technical solutions of this disclosure will now be described in detail with reference to the accompanying drawings and embodiments.
[0042] Unless otherwise stated, the exemplary implementations / embodiments shown are to be understood as providing exemplary features of various details that provide ways in which the technical concepts of this disclosure can be implemented in practice. Therefore, unless otherwise stated, the features of various implementations / embodiments may be additionally combined, separated, interchanged and / or rearranged without departing from the technical concepts of this disclosure.
[0043] The use of crosshairs and / or shading in the accompanying drawings is generally used to clarify the boundaries between adjacent components. Thus, unless otherwise stated, the presence or absence of crosshairs or shading does not convey or indicate any preference or requirement for the specific material, material properties, dimensions, proportions, commonalities between the illustrated components, or any other characteristics, properties, etc., of the components. Furthermore, in the accompanying drawings, the dimensions and relative dimensions of components may be exaggerated for clarity and / or descriptive purposes. When exemplary embodiments can be implemented differently, a specific process sequence may be performed in a different order than that described. For example, two consecutively described processes may be performed substantially simultaneously or in the reverse order of their description. Furthermore, the same reference numerals denote the same components.
[0044] When a component is referred to as being "on" or "above" another component, "connected to," or "joined to" another component, the component may be directly on, directly connected to, or directly joined to the other component, or there may be intermediate components. However, when a component is referred to as being "directly on" another component, "directly connected to," or "directly joined to" another component, there are no intermediate components. Therefore, the term "connection" can refer to a physical connection, an electrical connection, etc., and may or may not have intermediate components.
[0045] For descriptive purposes, this disclosure may use spatial relative terms such as “below,” “under,” “below,” “down,” “above,” “above,” “higher,” and “side (e.g., in a “sidewall”)” to describe the relationship between one component and another component as shown in the accompanying drawings. In addition to the orientations depicted in the drawings, the spatial relative terms are also intended to encompass different orientations of the device during use, operation, and / or manufacture. For example, if the device in the drawings is flipped, a component described as “below” or “under” another component or feature would subsequently be positioned “above” said other component or feature. Thus, the exemplary term “below” can encompass both “above” and “below” orientations. Furthermore, the device may be otherwise positioned (e.g., rotated 90 degrees or in other orientations), thus interpreting the spatial relative descriptive terms used herein accordingly.
[0046] The terminology used herein is for the purpose of describing particular embodiments and is not intended to be limiting. As used herein, unless the context clearly indicates otherwise, the singular forms “a” and “the” are intended to include the plural forms as well. Furthermore, when the terms “comprising” and / or “including” and variations thereof are used in this specification, it indicates the presence of the stated features, integrals, steps, operations, parts, components, and / or groups thereof, but does not exclude the presence or addition of one or more other features, integrals, steps, operations, parts, components, and / or groups thereof. It should also be noted that, as used herein, the terms “substantially,” “about,” and other similar terms are used as approximate terms rather than as terms of degree, thus explaining the inherent biases in measurements, calculated values, and / or provided values that would be recognized by one of ordinary skill in the art.
[0047] Currently, microplastic pollution in water bodies is mainly removed through three methods: physical separation, chemical degradation, and biological treatment. Among these, existing physical separation methods typically use melt-blown filter cartridges to filter microplastics in water. However, melt-blown filter cartridges are consumables and are relatively expensive, resulting in high treatment costs for microplastics in water bodies.
[0048] To address the aforementioned technical problems, this embodiment provides a multi-stage water microplastic removal device. (See reference...) Figures 1 to 3 As shown, Figure 1 This is a schematic diagram of the multi-stage microplastic removal device for water in the embodiments of this application. Figure 2 This is a schematic diagram of the filter box after the loofah sponge has been removed in an embodiment of this application. Figure 3 This is a perspective view of the spiral guide component in the embodiments of this application.
[0049] The multi-stage water microplastic removal device of this embodiment includes: carrier 1, vortex air flotation machine 2, filter box 3 and adsorption box 4.
[0050] The carrier 1 serves as the installation base for the vortex air flotation machine 2, the filter box 3, and the adsorption box 4, and is equipped with an inlet 11 and an outlet 12.
[0051] The vortex-induced air flotation unit 2 is installed on the carrier 1 and is provided with an inlet end 21 and an outlet end 22. The inlet end 21 is connected to the inlet 11 via a pipe. The vortex-induced air flotation unit 2 can use existing vortex-induced air flotation equipment.
[0052] The filter box 3 has a first direction 35 and a second direction 36 that are perpendicular to each other. At least two partitions 31 are alternately arranged on the two opposing inner walls 32 of the filter box 3 along the first direction. Two adjacent partitions 31 are spaced apart in the first direction and staggered in the second direction 36. All partitions 31 divide the internal space of the filter box 3 into at least two chambers 33. The chambers 33 are sequentially connected along the first direction of the filter box 3, and the first chamber 33 is connected to the outlet end 22 of the vortex air flotation machine 2 via a pipe. A loofah sponge 34 is arranged in each chamber 33. The loofah sponge 34 forms a porous structure within the chamber 33, increasing the filtration area. The porous structure of the loofah sponge 34 effectively intercepts and adsorbs microplastics, improving filtration efficiency. Simultaneously, the loofah sponge 34, as a natural material, is inexpensive, reducing the operating cost of the device. The water flows in a tortuous manner within the chamber 33, forming a filtration path 37.
[0053] The adsorption box 4 is provided with an inlet 41 and an outlet 42. The inlet 41 is connected to the chamber 33 at the end of the filter box 3 through a pipe, and the outlet 42 is connected to the water outlet 12 through a pipe. The adsorption box 4 is provided with a spiral guide 43 between the inlet 41 and the outlet 42. The spiral guide 43 is provided with a guide groove 431 extending spirally along the length direction 35, and at least the wall of the guide groove 431 is provided with biochar 432.
[0054] In some embodiments of the carrier 1, the carrier 1 has a density less than that of water and is configured to float in the water. For example, the carrier 1 is made of polyethylene foam or hollow plastic spheres, with an overall density less than that of water. The carrier 1 is designed as a floating structure, and by rationally designing its volume and shape, it can naturally float in the water. For ease of installation, a fixed support can also be provided on the carrier 1 for mounting components such as the vortex flotation machine 2, the filter box 3, and the adsorption box 4, ensuring the stability of the entire device in the water. To further enhance the stability of the carrier 1 in water, the multi-stage microplastic removal device also includes a support 5 for fixing the carrier 1. The carrier 1 is fixed to the support 5 by bolts or welding, and the bottom of the support 5 is fixed to the shore or the bottom soil layer.
[0055] In some embodiments, the filter box 3 has a cuboid structure, with the first direction being the length direction 35 of the filter box 3 and the second direction 36 being the width direction of the filter box 3. The partitions 31 are staggered in the width direction to ensure that the water flows in a tortuous manner within the chamber 33, extending the filtration path 37, increasing the filtration time, and improving the filtration effect.
[0056] In some embodiments, the two inner walls 32 in the width direction of the filter box 3 serve as the base for mounting the partitions 31, which are fixed to the inner walls 32 by welding or bolting. The partitions 31 are staggered in the width direction to form multiple chambers 33.
[0057] In some embodiments, the loofah sponge 34 is fixed to the partition 31 by binding or fixing clamps and fills the entire chamber 33. The loofah sponge 34 is arranged in a filling manner in the chamber 33, which can form a greater number of porous structures and increase the filtration area.
[0058] In some embodiments, the surface of the loofah sponge 34 is provided with a water-repellent wax coating. The water-repellent wax coating is achieved by a spraying process, and the coating forms a protective film after drying. The coating protects the loofah sponge 34 from water corrosion, extends its service life, and further reduces consumable costs. For example, the processing flow for the water-repellent wax coating of the loofah sponge 34 is as follows: First, the loofah sponge 34 is cleaned with alcohol and purified water to remove impurities and then thoroughly dried; then, 4g of coconut wax is heated and dissolved in 100mL of xylene, and the loofah sponge 34 is immersed in the mixture and dried for 4 hours; finally, sufficient coconut wax is dissolved in alcohol / xylene (V:V = 2:8), and the solution (coconut wax concentration 4g / L) is sprayed onto the loofah sponge 34 using a spray gun and dried for 4 hours to obtain the surface of the loofah sponge 34 with a water-repellent wax coating. Filtration capacity experiment of modified loofah sponge: First, 1g of polyethylene powder (178μm / 75μm) was weighed and dispersed in 1L of water. Next, the mixture of water and microplastics was passed through a multi-layer filter box at a certain flow rate. The filtered mixture was collected. Simultaneously, a control experiment was conducted, where clean water was passed through the multi-layer filter box at the same flow rate, and the liquid was collected. Finally, the filtered liquid was filtered onto a nylon filter membrane with a pore size of 20μm (the weight of the filter membrane was measured beforehand), dried, and weighed to obtain the filtration effect of the loofah sponge before and after modification. Each experiment was repeated three times. By comparing the filtration effect of the loofah sponge before and after modification on microplastics, we found that the modified loofah sponge had a higher rejection rate (98.98%) for microplastics with a particle size of 178μm compared to the original loofah sponge (97.49%), while the rejection rate for microplastics with a particle size of 75μm was slightly lower. The experiment also revealed that the original loofah sponge had similar blocking effects on microplastics of 178μm and 75μm, while the modified loofah sponge had a better blocking effect on microplastics with larger particle sizes.
[0059] In some embodiments, the spiral guide element 43 is cylindrical, and the guide groove 431 is disposed on the outer peripheral surface of the spiral guide element 43. The guide groove 431 is realized by machining or injection molding, and the groove depth and width are determined according to design requirements. Biochar 432 can be fixed to the groove wall of the guide groove 431 by coating, spraying, adhesive, or bonding, or, if the manufacturing process allows, the spiral guide element 43 can be made entirely of biochar 432 material.
[0060] In some embodiments, the adsorption box 4 is provided with an insertion hole for installing a spiral guide 43, which is detachably inserted into the insertion hole and tightly fitted and fixed.
[0061] In some embodiments, the length direction of the spiral guide 43 is parallel to the pipe connecting the inlet 41 to the end chamber 33 of the filter box 3. When installed, the spiral guide 43 is kept parallel to the pipe connecting the inlet 41 and the end chamber 33 of the filter box 3. By adjusting the installation angle and position, water flow is ensured to flow along the spiral guide 43 within the adsorption box 4. The spiral guide 43 is positioned parallel to the pipe to ensure smooth water flow, reduce resistance, and guide the water flow along the guide channel 431.
[0062] In some embodiments, the inlet 11 is equipped with a filter screen 13. The filter screen 13 is fixed to the inlet 11 by bolts or clips. The filter screen 13 is made of stainless steel or plastic, and the mesh size is determined according to design requirements. The filter screen 13 effectively intercepts large particulate impurities, reduces the wear of large particulate impurities on equipment such as the vortex air flotation machine 2, and extends its service life.
[0063] In some embodiments, the adsorption tank 4 is equipped with a backwashing device 44, which is configured to drive water to flow from the outlet 42 to the inlet 41. The backwashing device 44 can be an existing backwashing module, including a water pump and a piping system. The water pump is connected to the outlet 42 and inlet 41 of the adsorption tank 4 via pipes, driving water to flow from the outlet 42 to the inlet 41. The backwashing device 44 achieves backwashing of the adsorption tank 4 by controlling the start / stop and flow rate of the water pump. The backwashing device 44 effectively removes impurities and microplastics from the adsorption tank 4, preventing clogging and maintaining adsorption performance. Reduced replacement frequency: Regular backwashing extends the service life of the spiral guide 43 and biochar 432, reducing the frequency of replacement.
[0064] To facilitate component installation, filter box 3 and adsorption box 4 are equipped with openable sealing covers. After opening the sealing covers, the loofah sponge 34 or spiral guide 43 can be installed inside. This structure is existing technology and will not be described in detail here.
[0065] When the multi-stage microplastic removal device for water is in operation, water enters the vortex flotation machine 2 through the inlet 11. The vortex flotation machine 2 uses an air-dispersing impeller to evenly distribute microbubbles in the water of the primary filter tank to adsorb microplastics and other impurities, achieving solid-liquid separation. The separated water enters the filter box 3 from the outlet 22. The filter box 3 is formed by partitions 31 to form multiple chambers 33 connected sequentially in the first direction. Each chamber 33 is equipped with a loofah sponge 34. As the water passes through each chamber 33, some microplastics in the water are intercepted and adsorbed by the loofah sponge 34, achieving a filtration effect. After filtration in the filter box 3, the water enters the adsorption box 4. The spiral guide element 43 in the adsorption box 4 extends the residence time of microplastics through the guide channel 431, allowing microplastics of different forms in the water to be captured by the biochar 432 on the wall of the guide channel 431 from different angles. Finally, the filtered water is discharged from the outlet 12.
[0066] Compared with the prior art, the beneficial effects of the technical solution provided by the embodiments of this application include at least the following:
[0067] Highly efficient solid-liquid separation: After the water enters the vortex-flotation unit 2 through the inlet 11, the vortex-flotation unit 2 distributes microbubbles evenly in the water through the air-dispersing impeller. These microbubbles can effectively adsorb microplastics and other impurities in the water, achieving highly efficient solid-liquid separation. This process significantly improves the removal efficiency of microplastics in the initial filtration stage, providing cleaner water for subsequent treatment.
[0068] Multi-stage filtration and low-cost advantages: Water treated by the vortex air flotation machine 2 enters the filter box 3. The filter box 3 is formed by multiple partitions 31, creating multiple chambers 33 connected sequentially along a first direction. Each chamber 33 is equipped with a loofah sponge 34. As the water flows through each chamber 33, the loofah sponge 34 can intercept and adsorb some microplastics in the water, achieving a multi-stage filtration effect. The design of the partitions 31 not only slows down the water flow velocity and extends the water flow path but also increases the filtration time, thereby improving the overall filtration effect. Equally important, the loofah sponge 34, as a filter material, has a lower cost than traditional filter cartridges, significantly reducing the operating cost of the device.
[0069] Optimized Adsorption Performance and Reduced Consumables: After treatment in the filter tank 3, the water enters the adsorption tank 4. The spiral guide component 43 within the adsorption tank 4, through its unique guide channel 431 design, extends the residence time of microplastics within the device. This design allows different forms of microplastics in the water to be effectively captured from different angles by the biochar 432 on the walls of the guide channel 431, significantly improving the removal efficiency of microplastics. Simultaneously, the guide channel 431 increases the adsorption area, further enhancing adsorption performance. Furthermore, due to the increased adsorption area, the spiral guide component 43 can adsorb more microplastics, reducing its replacement frequency and thus decreasing the amount of consumables used, further lowering the cost of microplastic treatment in water.
[0070] In summary, the multi-stage microplastic removal device for water bodies of this application achieves efficient removal of microplastics from water bodies through the synergistic effect of the vortex flotation machine 2, the filter box 3, and the adsorption box 4, while reducing treatment costs.
[0071] In the description of this specification, the references to terms such as "one embodiment / mode," "some embodiments / modes," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment / mode or example is included in at least one embodiment / mode or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment / mode or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments / modes or examples. Furthermore, without contradiction, those skilled in the art can combine and integrate the different embodiments / modes or examples described in this specification, as well as the features of different embodiments / modes or examples.
[0072] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.
[0073] Those skilled in the art should understand that the above embodiments are merely for illustrating the present disclosure and are not intended to limit the scope of the disclosure. Those skilled in the art can make other changes or modifications based on the above disclosure, and these changes or modifications still fall within the scope of the present disclosure.
Claims
1. A multi-stage water microplastic removal device, characterized in that, include: The carrier is provided with an inlet and an outlet; A vortex-induced air flotation machine is installed on the carrier and is provided with an inlet end and an outlet end. The inlet end is connected to the inlet through a pipe. A filter box has a first direction and a second direction that are perpendicular to each other. At least two partitions are alternately arranged on the two inner walls of the filter box that are opposite each other along the first direction. Two adjacent partitions in the first direction are spaced apart in the first direction and staggered in the second direction. All the partitions divide the internal space of the filter box into at least two chambers. Each chamber is connected to the first direction of the filter box in sequence. The first chamber is connected to the outlet of the vortex air flotation machine through a pipe. Each chamber is provided with a loofah sponge. An adsorption box is provided with an inlet and an outlet. The inlet is connected to the chamber at the end of the filter box via a pipe, and the outlet is connected to the water outlet via a pipe. A spiral guide is provided between the inlet and the outlet of the adsorption box. The spiral guide has a guide groove that extends spirally along its length, and biochar is provided on at least the wall of the guide groove.
2. The multi-stage water microplastic removal device according to claim 1, characterized in that, The carrier has a density less than that of the water and is configured to be suspended in the water; the water microplastic multi-stage removal device also includes a support for fixing the carrier.
3. The multi-stage water microplastic removal device according to claim 1, characterized in that, The filter box has a cuboid structure, with the first direction being the length direction of the filter box and the second direction being the width direction of the filter box.
4. The multi-stage water microplastic removal device according to claim 1, characterized in that, The two inner walls of the filter box that are positioned opposite each other are the two inner walls in the width direction of the filter box.
5. The multi-stage water microplastic removal device according to claim 1, characterized in that, The loofah sponge is disposed on the partition and fills the cavity.
6. The multi-stage water microplastic removal device according to claim 1, characterized in that, The surface of the loofah sponge is provided with a water-repellent wax coating.
7. The multi-stage water microplastic removal device according to claim 1, characterized in that, The spiral guide is cylindrical, and the guide groove is disposed on the outer circumferential surface of the spiral guide.
8. The multi-stage water microplastic removal device according to claim 1, characterized in that, The length direction of the spiral guide is parallel to the pipe connecting the inlet and the chamber at the end of the filter box.
9. The multi-stage water microplastic removal device according to any one of claims 1 to 8, characterized in that, The water inlet is equipped with a filter screen.
10. The multi-stage water microplastic removal device according to any one of claims 1 to 8, characterized in that, The adsorption tank is equipped with a backwashing device, which is configured to drive water to flow from the outlet to the inlet.