Electrode assembly, experimental device for removing micro-plastics in water environment and use method of experimental device

Abstract

The invention relates to the technical field of electro-adsorption performance experiments, in particular to an electrode assembly, an experimental device for removing micro-plastics in a water environment and a use method. The experimental device comprises the working electrode with the adjustable distance, the distance between the cathode plate and the anode plate is adjusted by increasing or decreasing the number of the copper gaskets so as to adapt to micro-plastics with different particle sizes and concentrations, and the adsorption effect is enhanced. The electrode plate is made of activated carbon fibers with high specific surface area and good conductivity. The experimental device further comprises a stabilized voltage supply, a peristaltic pump, an electro-adsorption device and a water pool container, the peristaltic pump achieves circulating flow of water flow, the micro-plastic concentration between the electrodes is continuously updated, a complete electro-adsorption system is formed, and the adsorption efficiency is improved. The problems that an existing electro-adsorption experimental device cannot flexibly adjust the electrode distance and cannot adapt to the electro-adsorption removal rate of micro-nano plastics with different concentrations and particle sizes are solved, and the universality and efficiency of experiments are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of electric adsorption performance experiments, and in particular to an electrode assembly, an experimental device for removing microplastics from an aquatic environment, and a method of using the same. Background Art

[0002] Micro-nano plastics mainly come from tiny fragments of synthetic polymers. They exist in various forms such as particles, fragments, films and fibers. Due to their extremely small size and wide distribution, they have become an emerging and difficult-to-control pollutant. In urban waters, micro-nano plastics are detected very frequently, mainly including polyethylene, polystyrene, polyamide, polyvinyl chloride, polyester, polyurethane, polypropylene and polyethylene terephthalate. These microplastics have potential toxicity and harm to aquatic organisms and even the entire ecosystem due to their high persistence and cumulative effects.

[0003] The electrode distance of existing experimental devices for electrosorption of microplastics is usually fixed and cannot be flexibly adjusted according to the particle size and concentration of microplastics. This makes it difficult to achieve the optimal electric field distribution and adsorption effect when dealing with microplastics of different particle sizes and concentrations, limiting the scope of application and efficiency of the experimental device. In addition, the choice of electrode materials is often relatively simple, and there is a lack of materials optimized for the characteristics of microplastics, which leads to low efficiency of electrodes in adsorbing microplastics, and the accuracy of the experiment may be affected by material reactions. Summary of the invention

[0004] The present invention provides an electrode assembly, an experimental device for removing microplastics in an aquatic environment, and a method of using the same, which can solve the problem that the existing electrosorption experimental device cannot flexibly adjust the electrode distance and cannot adapt to the electrosorption removal rate of micro-nano plastics of different concentrations and particle sizes.

[0005] An electrode assembly according to the present invention comprises: an electrode body, the electrode body comprising a cathode plate and an anode plate arranged side by side; a copper conductor for conducting electricity is provided on the side of the cathode plate away from the anode plate and the side of the anode plate away from the cathode plate, and an electric screw is provided on the copper conductor; and a plurality of copper gaskets are provided between the copper conductor and the cathode plate and the anode plate.

[0006] By increasing or decreasing the number of copper gaskets in the present invention, the distance between the cathode plate and the anode plate can be adjusted, and micro-nano plastics with different particle sizes and concentrations can be adapted, thereby optimizing the electric field distribution and adsorption effect.

[0007] Through the arrangement of the copper conductor in the present invention, the copper conductor and the connecting screw ensure good contact between the electrode and the power supply, reduce resistance, and improve current transmission efficiency.

[0008] In the present invention, the electrode body also includes an intermediate body arranged between the cathode plate and the anode plate, and clamps arranged on both sides of the cathode plate and the anode plate respectively. The intermediate body is a conductor, and the clamps are made of an insulator.

[0009] Through the setting of the intermediate in the present invention, a microcurrent and a DC electric field are formed together with the energized cathode plate and anode plate in the electrolysis water environment. The fixture is made of an insulator material to effectively prevent current leakage and short circuit of the cathode plate and the anode plate, ensuring that the current can only pass through the cathode plate, the anode plate and the water to be purified.

[0010] In the present invention, the end of the clamp away from the intermediate body is provided with a first protrusion, a second protrusion, and a third protrusion in sequence along the length direction of the clamp, and the first protrusion, the second protrusion and the third protrusion are distributed in a stepped manner.

[0011] By setting the first protrusion, the second protrusion, and the third protrusion in the present invention, the clamp can adapt to experiments with different experimental parameters, thereby improving the versatility of the electrode assembly.

[0012] In the present invention, countersunk holes are provided at the second protrusion and the third protrusion, and fixing bolts for fastening and fixing the copper conductor, the intermediate body and the clamp are provided at the countersunk holes.

[0013] The cooperation between the countersunk hole and the fixing bolt in the present invention enables the clamping plate, the intermediate body and the clamp to be tightly fixed together, thereby ensuring the stability and safety of the electrode and effectively preventing the electrode assembly from loosening due to vibration during the experiment.

[0014] In the present invention, the bottom of the intermediate body extends downward to form a fourth protrusion, and the fourth protrusion is used to cooperate with the clamping plate and the copper gasket to fix the cathode plate and the anode plate.

[0015] The fourth protrusion of the present invention is used in combination with the clamping plate and the copper gasket to further fix the cathode plate and the anode plate. The auxiliary fixation of the fourth protrusion can more accurately adjust the electrode spacing.

[0016] In the present invention, both the cathode plate and the anode plate are made of activated carbon fiber material.

[0017] In the present invention, both the cathode plate and the anode plate are made of activated carbon fiber material. Activated carbon fiber has the characteristics of large specific surface area and rich microporous structure, and can efficiently adsorb micro-nano plastic particles in water. In addition, activated carbon fiber has good chemical stability and is not easy to react with other substances in water, thus ensuring the accuracy of the experiment.

[0018] The present invention also provides an experimental device for removing microplastics in aquatic environments based on electrosorption, which is equipped with an electrode assembly, and includes: an electrosorption device, a voltage-stabilized power supply, a peristaltic pump and a water pool container; the electrosorption device includes an electrode assembly with adjustable spacing, and a beaker for storing water; the voltage-stabilized power supply is connected to a power-on screw through an electric wire to form a power-on circuit.

[0019] The experimental device of the present invention includes a voltage-stabilized power supply, a peristaltic pump, an electric adsorption device and a water pool container, thus forming a complete system for removing microplastics in a water environment by electric adsorption.

[0020] By setting the peristaltic pump in the present invention, the circulation of water is achieved, the concentration of microplastics in the water in the beaker is continuously updated, and the adsorption efficiency is improved.

[0021] In the present invention, two connecting pipe openings are arranged along the circumferential direction at the beaker, and the connecting pipe openings are connected to water pipes outside the connecting pipe openings and are respectively connected to the peristaltic pump and the water pool container.

[0022] The connecting pipe port at the beaker of the present invention is connected to the peristaltic pump and the water pool container through an external water pipe. The peristaltic pump changes the flow rate of the water in the device, and continuously updates the concentration of micro-nano plastics between the cathode plate and the anode plate. Under the action of microcurrent and direct current electric field, the microplastic nanoparticles are continuously adsorbed and accumulated on the electrodes and circulate continuously, thereby reducing the concentration of micro-nano plastics in the water pool container.

[0023] In the present invention, an external water pipe at the peristaltic pump leads to the water pool container, and the electric adsorption device, the peristaltic pump and the water pool container are connected to each other through the external water pipe.

[0024] The peristaltic pump of the present invention is connected to the water pool container through an external water pipe, and the electric adsorption device, the peristaltic pump and the water pool container are interconnected through the external water pipe, so that the experimental device can perform experiments in a cycle.

[0025] The present invention also provides a method for using an experimental device for removing microplastics from a water environment based on electrosorption. When used, the positive and negative wiring ports on the voltage-stabilized power supply are connected to the power screws through wires, the switch of the voltage-stabilized power supply is turned on, the electrode assembly is powered on, the output voltage of the voltage-stabilized power supply is adjusted to between 0.6 and 1.2 V, a water sample containing microplastics is poured into a pool container, and the experimental device is turned on for electrosorption treatment. The distance between the cathode plate and the anode plate is adjusted by changing the number of copper gaskets, and the adjustable range of the electrode distance is 4-16 mm, so that the experimental device can optimize the adsorption effect according to different removal requirements. Furthermore, the flow rate of the water in the entire experimental device is changed by a peristaltic pump. The water in the pool container continuously circulates in the peristaltic pump, beaker and pool container, continuously updating the concentration of micro-nano plastics between the cathode plate and the anode plate in the beaker. Under the action of microcurrent and DC electric field, the micro-nano plastics are continuously adsorbed and accumulated on the cathode plate and the anode plate, working over and over again, thereby reducing the concentration of micro-nano plastics in the pool container and purifying the water quality. Finally, the water quality in the pool container meets the national drinking water standards, realizing the effective adsorption and removal of micro-nano plastics in the water environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1Schematic diagram of the experimental setup for microplastic removal in aquatic environments.

[0027] Figure 2 Schematic diagram of the electrosorption device.

[0028] Figure 3 This is a top view of the electrosorption device.

[0029] Figure 4 Schematic diagram of the electrode assembly.

[0030] Figure 5 It is the left side view of the electrode assembly.

[0031] Figure 6 A schematic diagram of the fixture. DETAILED DESCRIPTION

[0032] In order to further understand the content of the present invention, the present invention is described in detail in conjunction with the embodiments. It should be understood that the embodiments are only for explaining the present invention and are not intended to limit it.

[0033] Example 1 like Figure 4-6 As shown, this embodiment provides an electrode assembly, which includes: an electrode body 200, the electrode body 200 includes a cathode plate 210 and an anode plate 220 arranged side by side; a copper conductor 230 for conducting electricity is provided on the side of the cathode plate 210 away from the anode plate 220 and the side of the anode plate 220 away from the cathode plate 210, and a power connection screw 231 is provided on the copper conductor 230; a plurality of copper gaskets 240 are provided between the copper conductor 230 and the cathode plate 210 and the anode plate 220.

[0034] By increasing or decreasing the number of copper gaskets 240 in this embodiment, the distance between the cathode plate 210 and the anode plate 220 can be adjusted to adapt to microplastics of different particle sizes and concentrations, thereby optimizing the electric field distribution and adsorption effect.

[0035] By disposing the copper conductor 230 in this embodiment, the copper conductor 230 and the power connection screw ensure good contact between the electrode and the power source, reduce resistance, and improve current transmission efficiency.

[0036] In this embodiment, the electrode body 200 further includes an intermediate body 250 disposed between the cathode plate 210 and the anode plate 220, and a clamp 260 correspondingly disposed on both sides of the cathode plate 210 and the anode plate 220. The intermediate body 250 is a conductor, and the clamp 260 is made of an insulator.

[0037] Through the arrangement of the intermediate body 250 in this embodiment, a microcurrent and a DC electric field are formed in the electrolysis water environment together with the energized cathode plate 210 and the anode plate 220. The clamp 260 is made of an insulator material, which effectively prevents current leakage and short circuit of the cathode plate 210 and the anode plate 220, ensuring that the current can only pass through the cathode plate 210, the anode plate 220 and the water to be purified.

[0038] In this embodiment, the end of the clamp 260 away from the intermediate body 250 is provided with a first protrusion 261, a second protrusion 262, and a third protrusion 263 in sequence along the length direction of the clamp 260, and the first protrusion 261, the second protrusion 262 and the third protrusion 263 are distributed in a stepped manner.

[0039] By disposing the first protrusion 261, the second protrusion 262, and the third protrusion 263 in this embodiment, the clamp 260 can adapt to experiments with different experimental parameters, thereby improving the versatility of the electrode assembly.

[0040] In this embodiment, countersunk holes 264 are disposed at the second protrusion 262 and the third protrusion 263 . Fixing bolts 265 for fastening and fixing the copper conductor 230 , the intermediate body 250 and the clamp 260 are disposed at the countersunk holes 264 .

[0041] Through the cooperation between the countersunk hole 264 and the fixing bolt 265 in this embodiment, the copper conductor 230, the intermediate body 250 and the clamp 260 can be tightly fixed together, ensuring the stability and safety of the electrode assembly and effectively preventing the electrode assembly from loosening due to vibration during the experiment.

[0042] In this embodiment, the bottom of the intermediate body 250 extends downward to form a fourth protrusion 251 . The fourth protrusion 251 is used to cooperate with the copper conductor 230 and the copper gasket 240 to fix the cathode plate 210 and the anode plate 220 .

[0043] In this embodiment, the fourth protrusion 251 is used in conjunction with the copper conductor 230 and the copper gasket 240 to further fix the cathode plate 210 and the anode plate 220. The auxiliary fixation of the fourth protrusion 251 can more accurately adjust the distance between the cathode plate 210 and the anode plate 220.

[0044] In this embodiment, both the cathode plate 210 and the anode plate 220 are made of activated carbon fiber material.

[0045] In this embodiment, both the cathode plate 210 and the anode plate 220 are made of activated carbon fiber material. Activated carbon fiber has the characteristics of large specific surface area and rich microporous structure, and can efficiently adsorb micro-nano plastic particles in water. In addition, activated carbon fiber has good chemical stability and is not easy to react with other substances in water, thereby ensuring the accuracy of the experiment.

[0046] Example 2 like Figure 1-3 As shown, this embodiment also provides an experimental device for removing microplastics from aquatic environments based on electrosorption, which is equipped with an electrode assembly, and includes: an electrosorption device 100, a voltage-stabilized power supply 300, a peristaltic pump 400 and a water pool container 500; the electrosorption device 100 includes an electrode assembly with adjustable spacing as described in any one of claims 1-6, and a beaker 110 for storing water; the voltage-stabilized power supply 300 is connected to the power-on screw 231 through an electric wire to form a power-on circuit.

[0047] The experimental device in this embodiment includes a voltage-stabilized power supply 300, a peristaltic pump 400, an electric adsorption device 100 and a water pool container 500, forming a complete system for removing microplastics in a water environment through electric adsorption.

[0048] By setting the peristaltic pump in this embodiment, the circulation of water is achieved, the concentration of microplastics between the electrodes is continuously updated, and the adsorption efficiency is improved.

[0049] In this embodiment, two connecting pipe openings 111 are provided along the circumferential direction of the beaker 110 , and the connecting pipe openings 111 are connected to the peristaltic pump 400 and the water pool container 500 through external water pipes.

[0050] In this embodiment, the connecting pipe port 111 at the beaker is connected to the peristaltic pump 400 and the water pool container 500 through an external water pipe. The peristaltic pump 400 changes the flow rate of the water in the device and continuously updates the concentration of micro-nano plastics between the cathode plate 210 and the anode plate 220. Under the action of microcurrent and DC electric field, the microplastic nanoparticles are continuously adsorbed and accumulated on the electrodes and circulate continuously, thereby reducing the concentration of micro-nano plastics in the water pool container.

[0051] In this embodiment, an external water pipe at the peristaltic pump 400 leads to the water pool container 500, and the electric adsorption device 100, the peristaltic pump 400 and the water pool container 500 are interconnected through the external water pipe.

[0052] In this embodiment, the peristaltic pump 400 is connected to the water pool container 500 through an external water pipe. The electric adsorption device 100, the peristaltic pump 400 and the water pool container 500 are interconnected through the external water pipe, so that the experimental device can perform experiments in a cycle and continuously reduce the concentration of micro-nano plastics in the water.

[0053] Example 3 This embodiment provides a method for using an experimental device for removing microplastics from a water environment based on electrosorption. When used, the positive and negative terminals on the voltage-stabilized power supply 300 are connected to the power screw 231 through wires, and the switch of the voltage-stabilized power supply 300 is turned on. At this time, the electrode assembly is powered on, and the output voltage of the voltage-stabilized power supply 300 is adjusted to between 0.6-1.2V. The water sample containing microplastics is poured into the pool container 500, and the experimental device is turned on for electrosorption treatment. The distance between the cathode plate 210 and the anode plate 220 is adjusted by changing the number of copper gaskets 240. The adjustable range of the electrode distance is 4-16 mm, so that the experimental device can optimize the adsorption effect according to different removal requirements. Furthermore, the flow rate of the water in the entire experimental device is changed by the peristaltic pump 400, and the water in the pool container 500 is continuously circulated in the peristaltic pump, the beaker and the pool container, and the concentration of micro-nano plastics between the cathode plate 210 and the anode plate 220 in the beaker 110 is continuously updated. Under the action of microcurrent and DC electric field, the micro-nano plastics are continuously adsorbed and gathered at the cathode plate 210 and the anode plate 220, and the cycle of operation is repeated to reduce the concentration of micro-nano plastics in the pool container and purify the water quality. Finally, the water quality in the pool container 500 meets the national drinking water standards, and the effective adsorption and removal of micro-nano plastics in the water environment is achieved.

[0054] It is easy to understand that those skilled in the art can combine, split, reorganize, etc. the embodiments of the present application to obtain other embodiments based on one or several embodiments provided in the present application, and these embodiments do not exceed the protection scope of the present application.

[0055] The present invention and its implementation methods are described schematically above, and the description is not restrictive. The embodiments shown in the embodiments are only part of the implementation methods of the present invention, and the actual structure is not limited thereto. Therefore, if a person skilled in the art is inspired by the embodiments and designs a structure and an implementation method similar to the technical solution without creativity without departing from the purpose of the invention, they should all fall within the protection scope of the present invention.

Claims

1. An electrode assembly, comprising an electrode body (200), characterized in that: The electrode body (200) comprises a cathode plate (210) and an anode plate (220) arranged side by side; a copper conductor (230) for conducting electricity is provided on a side of the cathode plate (210) away from the anode plate (220) and a side of the anode plate (220) away from the cathode plate (210); a power connection screw (231) is provided on the copper conductor (230); and a plurality of copper gaskets (240) are provided between the copper conductor (230) and the cathode plate (210) and the anode plate (220).

2. An electrode assembly according to claim 1, characterized in that: The electrode body (200) further comprises an intermediate body (250) arranged between the cathode plate (210) and the anode plate (220), and a clamp (260) correspondingly arranged on both sides of the cathode plate (210) and the anode plate (220); the intermediate body (250) is a conductor, and the clamp (260) is made of an insulating material.

3. An electrode assembly according to claim 2, characterized in that: An end of the clamp (260) away from the intermediate body (250) is provided with a first protrusion (261), a second protrusion (262), and a third protrusion (263) in sequence along the length direction of the clamp (260); the first protrusion (261), the second protrusion (262), and the third protrusion (263) are distributed in a stepped manner.

4. An electrode assembly according to claim 3, characterized in that: Countersunk holes (264) are provided at the second protrusion (262) and the third protrusion (263), and fixing bolts (265) for fastening and fixing the copper conductor (230), the intermediate body (250) and the clamp (260) are provided at the countersunk holes (264).

5. The electrode assembly according to claim 1, characterized in that: The bottom of the intermediate body (250) extends downward to form a fourth protrusion (251), and the fourth protrusion (251) is used to cooperate with the copper conductor (230) and the copper gasket (240) to fix the cathode plate (210) and the anode plate (220).

6. The electrode assembly according to claim 1, characterized in that: Both the cathode plate (210) and the anode plate (220) are made of activated carbon fiber material.

7. An experimental device for removing microplastics from an aquatic environment based on electrosorption, comprising an electrosorption device (100), a voltage-stabilized power supply (300), a peristaltic pump (400) and a water pool container (500); the electrosorption device (100) comprises an electrode assembly as described in any one of claims 1 to 6, and a beaker (110) for storing water; the voltage-stabilized power supply (300) is connected to a power-on screw (231) via an electric wire to form a power-on circuit.

8. The experimental device for removing microplastics from water environment based on electrosorption according to claim 7 is characterized in that: Two connecting pipe openings (111) are provided along the circumferential direction of the beaker (110), and the connecting pipe openings (111) are connected to water pipes externally thereof and are respectively connected to the peristaltic pump (400) and the water pool container (500).

9. The experimental device for removing microplastics from water environment based on electrosorption according to claim 7, characterized in that: An external water pipe at the peristaltic pump (400) leads to the water pool container (500), and the electric adsorption device (100), the peristaltic pump (400) and the water pool container (500) are interconnected via the external water pipe.

10. A method for using an experimental device for removing microplastics from aquatic environments based on electrosorption, characterized in that: The experiment is carried out using the experimental device for removing microplastics from aquatic environments based on electrosorption as described in any one of claims 7 to 9.

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