Electrocatalytic device for removing COD

Abstract

This utility model discloses an electrocatalytic device for removing COD, including an electrolytic cell with a diversion chamber at the bottom and several diversion holes at the top. Inlet and outlet pipes are respectively located on both sides of the electrolytic cell. A filter frame is placed inside the electrolytic cell, with a filter screen installed at the bottom. Supports are fixedly connected to the outer walls of both sides of the electrolytic cell. A pair of lower slots are provided on the top surface of the support, and a conductive rod is placed in each slot. Several cathode plates are mounted on one conductive rod, and several anode plates are mounted on the other. This utility model allows for flexible adjustment of the distance between the cathode and anode plates, and allows multiple cathode and anode plates to be removed simultaneously for periodic maintenance and replacement without individual removal. It also allows for wastewater diversion treatment, ensuring that the wastewater is evenly distributed into the electrolytic cell and fully contacts each cathode and anode plate, facilitating rapid cleaning of impurities generated during the electrocatalytic oxidation process.

Description

Technical Field

[0001] This utility model belongs to the field of wastewater COD treatment technology, and in particular relates to an electrocatalytic device for removing COD. Background Technology

[0002] COD (Chemical Oxygen Demand) is an indicator that measures the total amount of organic matter and reducing inorganic substances (such as ferrous salts and sulfides) in water bodies, reflecting the degree of pollution caused by wastewater. In the nickel sulfate industry, COD removal refers to reducing the content of organic matter and inorganic reducing substances in wastewater through process methods to meet environmental protection requirements or reclaimed water quality standards. In the nickel sulfate industry, electrocatalytic devices are a technology that degrades organic matter and reducing inorganic substances in wastewater through electrochemical oxidation reactions.

[0003] According to the search, a catalytic oxidation device for COD degradation in wastewater with the publication number CN220149335U is disclosed on the Chinese Patent Network. This catalytic oxidation device can be used to remove COD from wastewater in the nickel sulfate industry. However, there are some defects and shortcomings that need to be improved: (1) Due to the structural design of some existing catalytic devices, the spacing of the electrode plates is relatively fixed and difficult to adjust flexibly. When the electrode plates need to be regularly maintained and replaced, they can only be removed from the electrolytic cell one by one. The whole process is cumbersome and time-consuming, thus reducing the overall working efficiency; (2) When the wastewater to be catalytically oxidized is introduced into the electrolytic cell, some existing catalytic devices lack effective diversion measures, making it difficult for the wastewater to be evenly distributed into the electrolytic cell and fully contact each electrode plate, thus reducing the COD removal efficiency and effect; (3) After long-term use, the impurities generated during the catalytic oxidation process of some existing catalytic devices tend to be deposited at the bottom of the electrolytic cell, which is not easy to clean quickly, thus causing the electrolytic cell to be blocked and affecting the subsequent normal use of the catalytic device. Therefore, the electrocatalytic device for removing COD provided by this utility model is of great significance in addressing the above problems. Utility Model Content

[0004] This invention provides an electrocatalytic device for COD removal. Using cathode and anode plates, it electrocatalytically oxidizes wastewater from the nickel sulfate industry to degrade organic and reducing inorganic substances, thereby removing COD. The distance between the cathode and anode plates can be flexibly adjusted as needed. After prolonged use, the pressure block can be removed from the support by unscrewing the second nut. Then, by lifting the conductive rod, each cathode and anode plate can be simultaneously removed from the electrolytic cell. This allows for regular maintenance and replacement of the cathode and anode plates without having to remove them individually, significantly improving overall efficiency. High efficiency: Multiple diversion holes allow for the diversion of wastewater entering the diversion chamber, ensuring even distribution within the electrolytic cell and full contact with each cathode and anode plate. This significantly improves the device's wastewater removal efficiency and effectiveness. The filter screen at the bottom of the filter frame effectively filters impurities generated during electrocatalytic oxidation, preventing them from entering the diversion holes and causing blockages. When cleaning the filter screen, simply lift the protrusion to remove the filter frame along with the impurities from the electrolytic cell for quick cleaning. In summary, these features solve the problems described in the background technology.

[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0006] This utility model discloses an electrocatalytic device for removing COD, comprising an electrolytic cell with a flow divider cavity at the bottom and several flow divider holes at the top. An inlet pipe and an outlet pipe are respectively provided on both sides of the electrolytic cell, with one end of each pipe connected to the flow divider cavity. Valves are installed on both the inlet and outlet pipes. A filter rack is placed inside the electrolytic cell, with a filter screen installed at the bottom. Supports are fixedly connected to the outer walls of both sides of the electrolytic cell. A pair of lower slots are provided on the top surface of each support, and a conductive rod is placed in each slot. Several cathode plates are mounted on one conductive rod, and several anode plates are mounted on the other. Mounting seats are fixedly connected to the tops of both cathode and anode plates, and guide holes are provided on the mounting seats. Both conductive rods have external threads and are threadedly connected to several mating first nuts.

[0007] Furthermore, each of the cathode plates and anode plates is staggered on two conductive rods, the diameter of the conductive rods is equal to the diameter of the guide holes, and the conductive rods pass through the corresponding guide holes on each mounting base. The first nuts are located on both sides of each cathode plate and anode plate.

[0008] Furthermore, the bracket is L-shaped, with a pressure block installed on its top. The bottom surface of the pressure block has a pair of upper and lower slots, both of which are semi-circular, with their diameters corresponding to the diameters of the conductive rods. The center of each upper slot corresponds one-to-one with the center of each lower slot.

[0009] Furthermore, a pair of studs are fixedly connected to the top of the bracket, and a second nut that mates with the studs is threaded onto the studs. A pair of positioning holes are provided on the pressure block, and the diameter of the positioning holes corresponds to the diameter of the studs. The center of each positioning hole corresponds one-to-one with the center of each stud.

[0010] Furthermore, the diversion holes are connected to the diversion cavity and the inner cavity of the electrolytic cell, respectively, and the diversion holes are equidistantly linearly distributed along the length and width directions of the electrolytic cell.

[0011] Furthermore, both the filter frame and the electrolytic cell are rectangular, and the length and width of the outer wall of the filter frame are equal to the length and width of the inner wall of the electrolytic cell, respectively. Several protrusions are fixedly connected to the top outer walls of both sides of the filter frame.

[0012] The present invention has the following advantages over the prior art:

[0013] (1) When the electrocatalytic device for removing COD in this utility model is in use, the wastewater generated in the nickel sulfate industry can be electrocatalytically oxidized through the cathode plate and anode plate to degrade the organic matter and reducing inorganic matter in the wastewater, thereby achieving the purpose of removing COD. The distance between the cathode plate and the anode plate can be flexibly adjusted as needed. After the device has been used for a long time, the pressure block can be removed from the support by unscrewing the second nut. At this time, the cathode plate and anode plate can be removed from the electrolytic cell at the same time by lifting the conductive rod upward, so that the cathode plate and anode plate can be regularly maintained and replaced without having to be removed one by one, thereby greatly improving the overall working efficiency.

[0014] (2) When the electrocatalytic device for removing COD in this utility model is in use, the wastewater entering the diversion chamber can be diverted through multiple diversion holes so that it can be evenly distributed into the electrolytic cell and fully contact each cathode plate and anode plate, thereby greatly improving the removal efficiency and effect of the device on wastewater.

[0015] (3) When using the electrocatalytic device for removing COD in this utility model, the impurities generated during the electrocatalytic oxidation process can be effectively filtered through the filter screen at the bottom of the filter frame to prevent impurities from entering the diversion hole and causing blockage. When it is necessary to clean the impurities on the filter screen, the filter frame and the impurities on the filter screen can be removed from the electrolytic cell by lifting the protrusion upwards, so as to quickly clean the impurities on the filter screen.

[0016] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of an electrocatalytic device for removing COD according to the present invention;

[0019] Figure 2 This is a schematic diagram of the electrolytic cell in this utility model;

[0020] Figure 3 This is a top view of the electrolytic cell in this utility model;

[0021] Figure 4 This is a front sectional view of the electrolytic cell in this utility model;

[0022] Figure 5 This is a schematic diagram of the top and bottom structures of the filter frame in this utility model;

[0023] Figure 6 This is a schematic diagram of the conductive rod in this utility model;

[0024] Figure 7 This is a schematic diagram of the structure of the cathode plate and anode plate in this utility model;

[0025] Figure 8 This is a schematic diagram of the structure of the pressure block in this utility model.

[0026] The attached diagram lists the components represented by each number as follows:

[0027] 1. Electrolytic cell; 2. Diverting chamber; 3. Diverting hole; 4. Inlet pipe; 5. Outlet pipe; 6. Filter frame; 7. Filter screen; 8. Support; 9. Lower slot; 10. Conductive rod; 11. Cathode plate; 12. Anode plate; 13. Mounting base; 14. Guide hole; 15. First nut; 16. Pressure block; 17. Upper slot; 18. Stud; 19. Second nut; 20. Positioning hole; 21. Protrusion. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0029] In the description of this utility model, it should be understood that the terms "relative", "one end", "inner", "lateral", "end", "both ends", "both sides", "front", "one end face", "the other end face", etc., which indicate orientation or positional relationship, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the components or elements 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.

[0030] Please see Figure 1-8 As shown, this utility model discloses an electrocatalytic device for removing COD, comprising an electrolytic cell 1, a diversion chamber 2 at the bottom of the electrolytic cell 1, and a plurality of diversion holes 3 at the top of the diversion chamber 2. An inlet pipe 4 and an outlet pipe 5 are respectively provided on both sides of the electrolytic cell 1. One end of each of the inlet pipe 4 and outlet pipe 5 is connected to the diversion chamber 2, and valves are installed on both the inlet pipe 4 and outlet pipe 5. Opening the valve on the inlet pipe 4 allows wastewater generated in the nickel sulfate industry to be introduced into the diversion chamber 2. After entering the diversion chamber 2, the wastewater can enter the electrolytic cell 1 through the diversion holes 3. A filter frame 6 is placed inside the electrolytic cell 1, and a filter screen 7 is installed at the bottom of the filter frame 6. Supports 8 are fixedly connected to the outer walls of both sides of the electrolytic cell 1. A pair of lower slots 9 are provided on the top surface of each support 8, and each lower slot 9 contains a... A conductive rod 10 is placed inside, with several cathode plates 11 mounted on one conductive rod 10 and several anode plates 12 mounted on the other conductive rod 10. Mounting seats 13 are fixedly connected to the tops of both cathode plates 11 and anode plates 12, and guide holes 14 are provided on the mounting seats 13. Both conductive rods 10 have external threads and are threadedly connected to several mating first nuts 15. The conductive rods 10, cathode plates 11, anode plates 12, and mounting seats 13 are all made of metal. The conductive rods 10 can be electrically connected to an external power source. When the external power source supplies power to the conductive rods 10, the wastewater can be electrocatalytically oxidized through the cathode plates 11 and anode plates 12 to degrade organic matter and reducing inorganic matter in the wastewater, thereby achieving the purpose of removing COD.

[0031] In this configuration, each cathode plate 11 and anode plate 12 is staggered on two conductive rods 10. The diameter of the conductive rods 10 is equal to the diameter of the guide holes 14, and the conductive rods 10 pass through the corresponding guide holes 14 on each mounting base 13. The first nuts 15 are located on both sides of each cathode plate 11 and anode plate 12. The mounting base 13 can drive the cathode plate 11 and anode plate 12 to move linearly along the two conductive rods 10, so as to flexibly adjust the distance between the cathode plate 11 and anode plate 12 as needed. After the distance is adjusted, each first nut 15 can be tightened and made to fit against both sides of the corresponding cathode plate 11 and anode plate 12 to fix the position of the cathode plate 11 and anode plate 12.

[0032] The bracket 8 is L-shaped, with a pressure block 16 installed on its top. The bottom surface of the pressure block 16 has a pair of upper slots 17. Both the upper slots 17 and the lower slots 9 are semi-circular, and their diameters correspond to the diameters of the conductive rod 10. The center of each upper slot 17 corresponds to the center of each lower slot 9. When the pressure block 16 is fixed on the bracket 8, the top and bottom ends of the conductive rod 10 can fit into the corresponding upper slots 17 and lower slots 9, respectively. At this time, the conductive rod 10 can be positioned by the mutual cooperation between the upper slots 17 and the lower slots 9 to prevent it from rolling and shifting, which would cause the positions of the cathode plate 11 and the anode plate 12 to shift.

[0033] The top of the support 8 is fixedly connected with a pair of studs 18, and a second nut 19 is threaded onto the studs 18 to cooperate with them. The pressure block 16 has a pair of positioning holes 20, the diameter of which corresponds to the diameter of the studs 18, and the center of each positioning hole 20 corresponds to the center of each stud 18. When the pressure block 16 is placed on the support 8, each stud 18 can be aligned and pass through the corresponding positioning hole 20. At this time, the pressure block 16 can be positioned by the cooperation between the studs 18 and the positioning holes 20, so as to firmly fix it on the support 8. After the device has been used for a long time, the pressure block 16 can be removed from the support 8 by unscrewing the second nut 19. At this time, by lifting the conductive rod 10 upward, each cathode plate 11 and anode plate 12 can be removed from the electrolytic cell 1 at the same time, so as to perform regular maintenance and replacement of the cathode plates 11 and anode plates 12 without having to remove them one by one, thereby greatly improving the overall working efficiency.

[0034] The diversion holes 3 are connected to the inner cavities of the diversion chamber 2 and the electrolytic cell 1, respectively. The diversion holes 3 are linearly distributed at equal intervals along the length and width of the electrolytic cell 1. When the wastewater enters the diversion chamber 2 through the inlet pipe 4, it can be diverted through multiple diversion holes 3 so that it can be evenly distributed into the electrolytic cell 1 and fully contact each cathode plate 11 and anode plate 12, thereby greatly improving the removal efficiency and effect of the device on COD of wastewater.

[0035] Both the filter frame 6 and the electrolytic cell 1 are rectangular, and the length and width of the outer wall of the filter frame 6 correspond to the length and width of the inner wall of the electrolytic cell 1, respectively. Several protrusions 21 are fixedly connected to the top outer walls on both sides of the filter frame 6. After the filter frame 6 is placed, it can fit against the inner wall of the electrolytic cell 1, and the protrusions 21 can fit against the top of the electrolytic cell 1. At the same time, the filter screen 7 can fit against the bottom of the inner cavity of the electrolytic cell 1 and cover each diversion hole 3. The filter screen 7 can effectively filter the impurities generated during the electrocatalytic oxidation process to prevent impurities from entering the diversion holes 3 and causing blockage. When it is necessary to clean the impurities on the filter screen 7, the filter frame 6 and the impurities on the filter screen 7 can be removed from the electrolytic cell 1 by lifting the protrusions 21, so as to quickly clean the impurities on the filter screen 7.

[0036] The circuits, electronic components, and chip modules involved in this utility model are all existing technologies, which can be fully implemented by those skilled in the art, and need not be elaborated upon. The content protected by this utility model does not involve any improvement to the software and methods.

[0037] All standard parts used in the application documents can be purchased from the market. All components in this application document can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art. The electrical components mentioned in this document are all electrically connected to the external main controller and power supply, and the main controller is a conventional known device that can play a control role.

[0038] The working principle of this utility model is as follows:

[0039] In use, the valve on the inlet pipe 4 can be opened to introduce wastewater from the nickel sulfate industry into the diversion chamber 2. After entering the diversion chamber 2, the wastewater is diverted through multiple diversion holes 3 to ensure even distribution into the electrolytic cell 1 and full contact with each cathode plate 11 and anode plate 12. Then, the conductive rods 10 are powered by an external power source. At this time, the cathode plates 11 and anode plates 12 can perform electrocatalytic oxidation treatment on the wastewater to degrade organic matter and reducing inorganic matter in the wastewater, thereby achieving the purpose of removing COD. The mounting base 13 can drive the cathode plates 11 and anode plates 12 to move linearly along the two conductive rods 10, so as to flexibly adjust the distance between the cathode plates 11 and anode plates 12 as needed. After the distance is adjusted, each first nut 15 can be tightened. The filter 6 is attached to both sides of the corresponding cathode plate 11 and anode plate 12 to fix their positions. The filter screen 7 can effectively filter impurities generated during the electrocatalytic oxidation process to prevent impurities from entering the diversion hole 3 and causing blockage. After the device has been used for a long time, the pressure block 16 can be removed from the bracket 8 by unscrewing the second nut 19. At this time, by lifting the conductive rod 10 upward, each cathode plate 11 and anode plate 12 can be removed from the electrolytic cell 1 at the same time, so as to perform regular maintenance and replacement of the cathode plate 11 and anode plate 12 without having to remove them one by one, thereby greatly improving the overall working efficiency. At the same time, by lifting the protrusion 21 upward, the filter frame 6 and the impurities on the filter screen 7 can be removed from the electrolytic cell 1 together for quick cleaning of the impurities on the filter screen 7.

[0040] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. An electrocatalytic device for removing COD, characterized in that, The device includes an electrolytic cell with a flow-dividing cavity at its bottom and several flow-dividing holes at its top. An inlet pipe and an outlet pipe are respectively located on both sides of the electrolytic cell, with one end of each pipe connected to the flow-dividing cavity. Valves are installed on both the inlet and outlet pipes. A filter rack is placed inside the electrolytic cell, with a filter screen installed at its bottom. Supports are fixedly connected to the outer walls of both sides of the electrolytic cell. A pair of lower slots are provided on the top surface of each support, and a conductive rod is placed in each slot. Several cathode plates are mounted on one conductive rod, and several anode plates are mounted on the other. Mounting seats are fixedly connected to the tops of both cathode and anode plates, and guide holes are provided on the mounting seats. Both conductive rods have external threads and are threadedly connected to several mating first nuts.

2. The electrocatalytic device for removing COD according to claim 1, characterized in that, Each of the cathode plates and anode plates is staggered on two conductive rods. The diameter of the conductive rods is equal to the diameter of the guide holes, and the conductive rods pass through the corresponding guide holes on each mounting base. The first nuts are located on both sides of each cathode plate and anode plate.

3. The electrocatalytic device for removing COD according to claim 1, characterized in that, The bracket is L-shaped, with a pressure block installed on its top. The bottom surface of the pressure block has a pair of upper and lower slots. Both the upper and lower slots are semi-circular, and their diameters correspond to the diameters of the conductive rods. The center of each upper slot corresponds to the center of each lower slot.

4. The electrocatalytic device for removing COD according to claim 3, characterized in that, A pair of studs are fixedly connected to the top of the bracket, and a second nut is threaded onto the studs to cooperate with them. A pair of positioning holes are provided on the pressure block. The diameter of the positioning holes is equal to the diameter of the studs, and the center of each positioning hole corresponds one-to-one with the center of each stud.

5. The electrocatalytic device for removing COD according to claim 1, characterized in that, The diversion holes are connected to the diversion cavity and the inner cavity of the electrolytic cell, respectively, and the diversion holes are equidistantly linearly distributed along the length and width of the electrolytic cell.

6. The electrocatalytic device for removing COD according to claim 1, characterized in that, Both the filter frame and the electrolytic cell are rectangular, and the length and width of the outer wall of the filter frame correspond to the length and width of the inner wall of the electrolytic cell, respectively. Several protrusions are fixedly connected to the top outer walls on both sides of the filter frame.

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