Energy self-consistent based biochar spiral electrode seawater purification treatment device

Abstract

The utility model relates to water treatment research field, concretely relates to a kind of biological carbon spiral electrode seawater purification treatment device based on energy self-consistent, the device includes energy self-consistent module;The energy self-consistent module includes EMS, the input end of the EMS is connected with new energy power supply, output end is electrically connected with seawater purification module and online water quality monitoring module respectively, the water inlet of the online water quality monitoring module is communicated with raw water, outlet is respectively communicated with online water quality monitoring module and clean water collection pool.By new energy generator realizes the energy self-sufficiency of purification device;It is also through the double adsorption design of biological carbon electrode and nanofiltration desalination unit, significantly improve seawater purification efficiency;The online water quality monitoring module set by the utility model can realize real-time monitoring to the seawater after purification, and also can be connected with online water quality monitoring module through mobile phone APP, and remote monitoring is carried out to water quality.

Description

Technical Field

[0001] This utility model relates to the field of water treatment research, specifically to a seawater purification device based on an energy-self-sufficient biochar spiral electrode. Background Technology

[0002] Global industrialization and urbanization are exacerbating water shortages, with the problem being even more pronounced in coastal and island areas where groundwater overexploitation is limited by natural conditions. Developing and utilizing seawater is crucial for addressing water scarcity and supporting sustainable development. Existing seawater desalination technologies, such as multi-stage flash distillation, reverse osmosis, and multi-effect desalination, generally rely on the power grid or fossil fuels. Unstable power supply in some remote islands or offshore areas makes it difficult to support continuous equipment operation, and the consumption of fossil fuels exacerbates carbon emissions, placing significant pressure on the planet. In existing electrode adsorption devices, the electrodes mostly employ traditional structures such as flat plates and mesh grids, resulting in limited contact area with seawater and low adsorption efficiency. Furthermore, these devices often rely on single membrane separation or adsorption materials, offering a limited purification method and failing to meet the demands for high-efficiency purification.

[0003] In view of this, this utility model is hereby proposed. Utility Model Content

[0004] In view of the problems existing in the prior art, this utility model provides a biochar spiral electrode seawater purification device based on energy self-sufficiency, which can achieve energy self-sufficiency and high purification efficiency.

[0005] To achieve the above objectives, this utility model provides the following technical solution: This utility model proposes a biochar spiral electrode seawater purification device based on energy self-sufficiency, including an energy self-sufficiency module; the energy self-sufficiency module includes an EMS, the input end of which is connected to a new energy generator, and the output end is electrically connected to a seawater purification module and an online water quality monitoring module respectively. The inlet of the online water quality monitoring module is connected to the raw water, and the outlet is connected to both the online water quality monitoring module and the purified water collection tank.

[0006] Furthermore, the seawater purification module includes a housing, and the housing contains a coarse filtration chamber and a nanofiltration desalination unit. The coarse filtration chamber contains a coarse filter screen, the inlet of which extends out of the housing and communicates with the raw water. The outlet of the coarse filtration chamber is connected to the inlet of the nanofiltration desalination unit. The outlet of the housing is connected to an online water quality monitoring module and a purified water collection tank, respectively. The nanofiltration desalination unit contains an electrode module, which is connected to an EMS (Electrical Management System).

[0007] Furthermore, the electrode module includes an anode frame and a cathode frame. Electrodes are attached to the inner sides of both the anode frame and the cathode frame from one end to the other at intervals. The electrodes on the anode frame and the electrodes on the cathode frame are one-to-one opposite each other. The electrodes on the anode frame are connected in series via a first wire, and the electrodes on the cathode frame are connected in series via a second wire. One end of the first wire passes through the housing and is connected to the output terminal of the EMS, and one end of the second wire passes through the housing and is connected to the input terminal of the EMS.

[0008] Furthermore, both the anode and cathode skeletons are helical structures and are parallel to each other in opposite directions. The electrode has the same curvature as the skeleton to which it is attached. The pitch of both the anode and cathode skeletons is preferably 80-100 cm, the ratio of pitch to system length is preferably 0.4, and the ratio of helical diameter to pitch is preferably 0.3.

[0009] Furthermore, the anode and cathode frames are formed by casting epoxy resin.

[0010] Furthermore, the electrode module is prepared by: grinding the inner mounting areas of the anode and cathode frames; cutting the biochar electrode to a suitable size, welding conductive leads, and insulating the lead connections; applying seawater-resistant epoxy adhesive, preferably Scubapoxy 5335, to the back of the biochar electrode and the corresponding mounting positions on the inner side of the frame; embedding the biochar electrode into a pre-set shallow groove and applying pressure to cure it; and finally sealing the edges and leads of the biochar electrode with silicone sealant.

[0011] Furthermore, the electrode is a biochar electrode, which is prepared using agricultural and forestry solid waste as raw material: first, biochar is obtained through pyrolysis and activation; then, biochar, conductive carbon black, and polyvinylidene fluoride are mixed in a mass ratio of 8:1:1, and an appropriate amount of N-methyl-2-pyrrolidone is added and thoroughly ground into a black paste; finally, the paste is coated onto nickel foam and dried in a vacuum oven to obtain the target electrode. The surface of the electrode is also coated with a PVA / GA crosslinking agent layer.

[0012] Furthermore, the nanofiltration desalination unit includes a covalent organic framework, and a nanofiltration membrane is disposed on the inner surface of the covalent organic framework.

[0013] Furthermore, the nanofiltration membrane is a cellulose acetate nanofiltration membrane.

[0014] Furthermore, a perfluorinated compound layer is disposed on the surface of the nanofiltration membrane facing away from the covalent organic framework.

[0015] Furthermore, the outlet of the shell is equipped with a disinfection unit.

[0016] Furthermore, the new energy power source includes at least one of solar power, wind power, and tidal power.

[0017] Furthermore, the online water quality monitoring module is connected to a mobile app.

[0018] Compared with the prior art, the beneficial effects of this utility model are as follows: (1) This utility model uses new energy power supply and then uses EMS to supply power to the power module to achieve energy self-sufficiency of the purification device; it also significantly improves the seawater purification efficiency through the dual adsorption design of biochar electrode and nanofiltration desalination unit.

[0019] (2) In this invention, electrodes are attached to the inner sides of both the cathode frame and the anode frame at intervals. The shape of the electrodes matches the shape of the frame to which they are attached. The electrodes on the cathode frame are one-to-one with the electrodes on the anode frame. Both the cathode frame and the anode are set as spiral structures and are parallel to each other in opposite directions. This greatly increases the total contact area between the electrodes and seawater, improves the ion transfer efficiency, and improves the seawater purification effect.

[0020] (3) This utility model is equipped with an online water quality monitoring module, which can realize real-time monitoring of the purified seawater to ensure that the water quality of the water entering the water purification collection pool is stable and meets the standards and can be drunk directly. Users can also connect to the online water quality monitoring module through a mobile APP to remotely monitor the water quality. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the purification device of this utility model; Figure 2 This is a schematic diagram of the seawater purification module of this utility model; Reference numerals: 1. Shell; 2. Coarse filter chamber; 3. Coarse filter screen; 4. Nanofiltration desalination unit; 5. Anode frame; 6. Cathode frame; 7. Electrode; 8. First wire; 9. Second wire; 10. Disinfection unit; 11. Online water quality monitoring module. Detailed Implementation

[0022] The present invention will now be described in detail with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the protection scope of the present invention.

[0023] Example 1 refer to Figure 1This embodiment proposes a biochar spiral electrode-based seawater purification device with energy self-sufficiency. Its key feature is the inclusion of an energy self-sufficiency module. This module includes an EMS (Energy Management System), whose input is connected to a new energy power source, and whose output is electrically connected to both a seawater purification module and an online water quality monitoring module 11. The inlet of the online water quality monitoring module 11 is connected to the raw water, and its outlet is connected to both the online water quality monitoring module 11 and a purified water collection tank. In this embodiment, the electrical energy generated by the new energy power source continuously and stably supplies power to the seawater purification module, the online water quality monitoring module 11, and other power-consuming modules via the EMS. The working process of this invention is as follows: After the raw water enters the seawater purification module, it flows out after purification. The water flowing out of the seawater purification module is divided into two streams: one stream enters the online water quality monitoring module 11 for real-time monitoring of the purified water quality, and the other stream enters the purified water collection tank for collection. The flow ratio of the two streams can be determined according to design requirements. Since the water flowing out of the online water quality monitoring module 11 is not directly drinkable, it needs to be collected and treated uniformly.

[0024] refer to Figure 2 To ensure water purification efficiency, in this embodiment, the seawater purification module includes a housing 1. The housing 1 is equipped with a coarse filter chamber 2 and a nanofiltration desalination unit 4. The coarse filter chamber 2 is equipped with a coarse filter screen 3. The inlet of the coarse filter screen 3 extends out of the housing 1 and is connected to the raw water. The outlet of the coarse filter chamber 2 is connected to the inlet of the nanofiltration desalination unit 4. The outlet of the housing 1 is connected to the online water quality monitoring module 11 and the purified water collection tank, respectively. The nanofiltration desalination unit 4 is equipped with an electrode module. The anode and cathode of the electrode module are connected to the output terminal (positive electrode) and input terminal (negative electrode) of the EMS, respectively. In the seawater purification module, the raw water first enters the coarse filter 3, which removes large particles of impurities such as algae and silt from the seawater. After coarse filtration, the seawater enters the nanofiltration desalination unit 4 from the outlet of the coarse filter chamber 2. Under the action of an electric field, the electrode module selectively adsorbs heavy metal ions and organic pollutants in the seawater through its unique pore structure and chemical properties. The nanofiltration desalination unit 4 then effectively removes salt and small molecule pollutants from the seawater.

[0025] To significantly increase the total effective contact area between the electrode module and seawater, thereby improving seawater treatment efficiency, the electrode module includes an anode frame 5 and a cathode frame 6. Both the anode frame 5 and the cathode frame 6 are helical structures and are parallel to each other in opposite directions. Electrodes 7 are attached to the inner sides of both the anode frame 5 and the cathode frame 6 at intervals from one end to the other. The shape of each electrode 7 matches the shape of its attached frame. The electrodes 7 on the anode frame 5 and the electrodes 7 on the cathode frame 6 are one-to-one. The electrodes 7 on the anode frame 5 are connected in series via a first wire 8, and the electrodes 7 on the cathode frame 6 are connected in series via a second wire 9. One end of the first wire 8 extends through the housing 1 and connects to the output terminal of the EMS, and one end of the second wire 9 extends through the housing 1 and connects to the input terminal of the EMS. This arrangement not only allows for multiple pairs of electrodes 7, but also ensures that the surface of the electrode 7 in contact with the seawater is curved, significantly increasing the total effective contact area between the electrode module and the seawater.

[0026] The pitch, pitch-to-system length ratio, and helical diameter-to-pitch ratio of the anode skeleton 5 and cathode skeleton 6 can all be determined according to design requirements. In this embodiment, the pitch is set to 90cm, the pitch-to-system length ratio is 0.4, and the helical diameter-to-pitch ratio is 0.3.

[0027] In this embodiment, both the anode skeleton 5 and the cathode skeleton 6 are formed by casting insulating epoxy resin, serving as the carrier of the electrode 7 and providing a reliable foundation for the stability of the electrode 7. In this embodiment, the electrode 7 is selected as a biochar electrode, which has high energy density and long cycle life, ensuring stable storage and release of electrical energy. The biochar electrode is prepared using agricultural and forestry solid waste as raw material: first, biochar is obtained through pyrolysis and activation; then, biochar, conductive carbon black, and polyvinylidene fluoride are mixed in a mass ratio of 8:1:1, and an appropriate amount of N-methyl-2-pyrrolidone is added and thoroughly ground into a black paste; finally, the paste is coated on nickel foam and dried in a vacuum oven to obtain the target electrode 7.

[0028] The electrode module in this embodiment is prepared by: polishing the inner mounting areas of the anode frame 5 and the cathode frame 6; cutting the biochar electrode to a suitable size, welding conductive leads, and insulating the lead connection; applying seawater-resistant epoxy adhesive, preferably Scubapoxy 5335, to the corresponding mounting positions on the back of the biochar electrode and the inner side of the frame; embedding the biochar electrode into a pre-set shallow groove and applying pressure to cure it; and finally sealing the edges of the biochar electrode and the leads with silicone sealant. This ensures that, except for the side of electrode 7 facing away from the frame, all other parts of the electrode module are insulated, effectively extending the lifespan of the motor module.

[0029] The surface of the electrode 7 is also coated with a PVA / GA crosslinking agent layer. The PVA / GA crosslinking agent has high wettability and can improve the adsorption capacity of the electrode surface.

[0030] The nanofiltration desalination unit 4 includes a covalent organic framework. A nanofiltration membrane is disposed on the inner surface of the covalent organic framework, enabling dual adsorption and efficient desalination. A perfluorinated compound layer is disposed on the surface of the nanofiltration membrane facing away from the covalent organic framework, which reduces membrane fouling and extends the service life of the nanofiltration membrane. Preferably, the nanofiltration membrane is a cellulose acetate nanofiltration membrane, and the perfluorinated compound is one of perfluorooctane sulfonic acid, perfluorooctanoic acid, or perfluoroalkyl ethylene.

[0031] To further ensure the quality of the purified water, a disinfection unit 10 is provided at the outlet of the housing 1. The water flowing out of the outlet of the housing 1 first flows through the disinfection unit 10 before entering the online water quality monitoring module 11 and the purified water collection tank. The disinfection unit 10 can kill residual bacteria and viruses in the water to ensure water safety. The disinfection unit 10 is preferably an ultraviolet disinfection unit 10.

[0032] The new energy power source includes at least one of solar power, wind power, and tidal power. In this embodiment, the new energy power source includes solar power, wind power, and tidal power. The EMS monitors the output power of each generator in real time and automatically switches or combines energy supply modes according to environmental conditions to ensure the stability and continuity of energy supply.

[0033] The online water quality monitoring module 11 selected in this embodiment can also be connected to the corresponding APP on the user's mobile phone for remote monitoring of water quality.

[0034] In the above embodiments, the online water quality monitoring module 11 is preferably the MS-800 online water quality monitor sold by Kemis Technology Co., Ltd.

[0035] The above description is merely a specific embodiment of this utility model, enabling those skilled in the art to understand or implement it. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this utility model.

[0036] It should be understood that this utility model is not limited to the content already described above, and modifications and changes can be made without departing from its scope. The scope of this utility model is limited only by the appended claims.

Claims

1. A seawater purification device based on energy self-sufficiency using a biochar spiral electrode, characterized in that, It includes an energy self-sufficiency module; the energy self-sufficiency module includes an EMS, the input end of which is connected to a new energy power source, and the output end is electrically connected to a seawater purification module and an online water quality monitoring module (11) respectively. The inlet of the online water quality monitoring module (11) is connected to the raw water, and the outlet is connected to the online water quality monitoring module (11) and the purified water collection tank respectively.

2. The biochar spiral electrode seawater purification device based on energy self-sufficiency according to claim 1, characterized in that, The seawater purification module includes a housing (1), inside which is a coarse filter chamber (2) and a nanofiltration desalination unit (4). The coarse filter chamber (2) is equipped with a coarse filter screen (3). The inlet of the coarse filter screen (3) extends out of the housing (1) and is connected to the raw water. The outlet of the coarse filter chamber (2) is connected to the inlet of the nanofiltration desalination unit (4). The outlet of the housing (1) is connected to the online water quality monitoring module (11) and the purified water collection tank, respectively. The nanofiltration desalination unit (4) is equipped with an electrode module, which is connected to the EMS.

3. The biochar spiral electrode seawater purification device based on energy self-sufficiency according to claim 2, characterized in that, The electrode module includes an anode frame (5) and a cathode frame (6). Electrodes (7) are attached to the inner side of the anode frame (5) and the inner side of the cathode frame (6) from one end to the other. The electrodes (7) on the anode frame (5) and the electrodes (7) on the cathode frame (6) are opposite to each other. The electrodes (7) on the anode frame (5) are connected in series by a first wire (8), and the electrodes (7) on the cathode frame (6) are connected in series by a second wire (9). One end of the first wire (8) passes through the housing (1) and is connected to the output terminal of the EMS. One end of the second wire (9) passes through the housing (1) and is connected to the input terminal of the EMS.

4. The biochar spiral electrode seawater purification device based on energy self-sufficiency according to claim 3, characterized in that, Both the anode skeleton (5) and the cathode skeleton (6) are spiral structures and are parallel to each other in opposite directions.

5. The biochar spiral electrode seawater purification device based on energy self-sufficiency according to claim 2, characterized in that, The electrode (7) is a biochar electrode, and the surface of the electrode (7) is coated with a PVA / GA crosslinking agent layer.

6. The biochar spiral electrode seawater purification device based on energy self-sufficiency according to claim 2, characterized in that, The nanofiltration desalination unit (4) includes a covalent organic framework, and a nanofiltration membrane is disposed on the inner surface of the covalent organic framework.

7. The biochar spiral electrode seawater purification device based on energy self-sufficiency according to claim 6, characterized in that, The nanofiltration membrane has a perfluorinated compound layer disposed on its surface away from the covalent organic framework.

8. The biochar spiral electrode seawater purification device based on energy self-sufficiency according to claim 2, characterized in that, The outlet of the shell (1) is equipped with a disinfection unit (10).

9. The biochar spiral electrode seawater purification device based on energy self-sufficiency according to claim 1, characterized in that, The new energy power source includes at least one of solar power, wind power, and tidal power.

10. The biochar spiral electrode seawater purification device based on energy self-sufficiency according to claim 1, characterized in that, The online water quality monitoring module (11) is connected to a mobile APP.

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