In-vitro scaling type electrocatalytic oxidation device

Abstract

The utility model provides an in-vitro scaling type electrocatalytic oxidation device, which relates to the technical field of sewage electrolysis treatment and comprises a cathode plate, an anode plate, an anion exchange partition plate, a cathode electrolysis chamber plate and an anode electrolysis chamber plate. Wherein the cathode electrolysis chamber is located between the anion exchange partition plate and the cathode plate, and the anode electrolysis chamber plate is located between the anion exchange partition plate and the anode plate. The utility model has the beneficial effects that the anode plate can generate hydroxyl radicals with high oxidability in the anode electrolysis chamber, so that the sewage in the anode electrolysis chamber is oxidized, and the treatment of organic wastewater is realized; and the anion exchange partition plate can prevent cations in the anode electrolysis chamber from moving towards the cathode electrolysis chamber and reduce the concentration of the cations in the cathode electrolysis chamber, so that the problem that the surface of a cathode plate is scaled due to the fact that the concentration of the cations in the cathode electrolysis chamber is too high is solved, the electrocatalytic oxidation device can continuously work for a long time, and the sewage treatment efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of wastewater electrolysis treatment technology, and in particular to an external scaling type electrocatalytic oxidation device. Background Technology

[0002] In the field of industrial wastewater treatment, electrocatalytic oxidation technology is widely used for the degradation of organic pollutants due to its high efficiency and environmental friendliness. Traditional electrocatalytic oxidation devices typically consist of an anode plate and a cathode plate. By applying a direct current voltage, strong oxidizing substances such as hydroxyl radicals are generated in the electrolysis chamber, thereby oxidizing and decomposing organic pollutants in wastewater. However, in actual operation, scaling easily occurs on the surface of the cathode plate, severely affecting the stability and treatment efficiency of the device.

[0003] In existing technologies, the cathode plates of electrolytic oxidation devices attract cations (such as calcium and magnesium ions) from the water during electrolysis. These cations undergo reduction reactions on the cathode surface or combine with anions in the solution to form insoluble precipitates (such as calcium carbonate and magnesium hydroxide), leading to scaling on the cathode plates. As operating time increases, the scale layer thickens, not only increasing the resistance of the electrolysis system and reducing current efficiency, but also hindering the normal progress of the electrolysis reaction, ultimately reducing the device's treatment capacity. Furthermore, severe scaling necessitates frequent shutdowns for cleaning or replacement of the cathode plates, increasing maintenance costs and affecting the continuity and stability of wastewater treatment.

[0004] Therefore, there is an urgent need to develop a new type of electrocatalytic oxidation device that can effectively inhibit cathode scaling, improve the stability and treatment efficiency of the device, and reduce operating and maintenance costs to meet the actual needs of industrial wastewater treatment. Utility Model Content

[0005] In view of this, the present invention provides an external scaling electrocatalytic oxidation device, comprising a cathode plate, an anode plate, an anion exchange separator, a cathode electrolysis chamber plate, and an anode electrolysis chamber plate;

[0006] The cathode plate and anode plate are connected to the negative and positive terminals of the electrolysis power supply, respectively.

[0007] The anion exchange separator is located between the cathode plate and the anode plate, the cathode electrolysis chamber is located between the anion exchange separator and the cathode plate, and the anode electrolysis chamber plate is located between the anion exchange separator and the anode plate.

[0008] The anion exchange separator has a nylon mesh in the middle that allows anions to pass through while blocking cations.

[0009] Electrolysis chambers are respectively provided in the cathode electrolysis chamber plate and the anode electrolysis chamber plate, and water inlet and water outlet are respectively provided at the upper and lower ends of the electrolysis chambers.

[0010] Furthermore, the device includes multiple cathode plates, anode plates, anion exchange partitions, cathode electrolysis chamber plates, and anode electrolysis chamber plates. The cathode plates and anode plates are arranged alternately, and the cathode electrolysis chamber plates, anion exchange partitions, and anode electrolysis chamber plates are arranged sequentially between adjacent cathode plates and anode plates.

[0011] Furthermore, the top of the cathode plate and the anode plate are respectively provided with cathode contact ears and anode contact ears, the cathode contact ears being connected to the negative terminal of the electrolysis power supply, and the anode contact ears being connected to the positive terminal of the electrolysis power supply.

[0012] Furthermore, the cathode contact ear and the anode contact ear are respectively provided with cathode contact holes and anode contact holes. The cathode contact holes on all cathode plates are aligned, and the anode contact holes on all anode plates are aligned. The cathode contact holes and anode contact holes are arranged alternately.

[0013] Furthermore, it also includes a cathode connecting rod and an anode connecting rod, the cathode connecting rod passing through all cathode connecting holes, the anode connecting rod passing through all anode connecting holes, the cathode connecting rod being connected to the negative terminal of the electrolysis power supply, and the anode connecting rod being connected to the positive terminal of the electrolysis power supply.

[0014] Furthermore, there are two cathode plates and two anode plates, and the outermost cathode plate and anode plate are provided with an insulating layer on their outer surfaces.

[0015] Furthermore, it also includes multiple mounting bolts, each containing a mounting and fastening nut. The fastening nut is threaded onto the end of the mounting bolt. The edges of the cathode plate, anode plate, anion exchange partition, cathode electrolysis chamber plate, and anode electrolysis chamber plate are all provided with mounting and clamping holes. The cathode plate, anode plate, anion exchange partition, cathode electrolysis chamber plate, and anode electrolysis chamber plate are stacked sequentially. The mounting bolt passes through multiple mounting and clamping holes in sequence, and the fastening nut is pressed against the outermost cathode plate.

[0016] Furthermore, the electrolysis chamber is provided with a mesh structure.

[0017] Furthermore, the anode plate is a titanium suboxide substrate, and a catalytic layer doped with carbon quantum dots is provided on the surface of the titanium suboxide substrate.

[0018] Furthermore, it also includes an insulating base, on which the cathode plate, anode plate, anion exchange separator, cathode electrolysis chamber plate, and anode electrolysis chamber plate are all supported.

[0019] The beneficial effects of this invention, an external scaling electrocatalytic oxidation device, are as follows: The electrocatalytic oxidation device includes a cathode plate, an anode plate, an anion exchange separator, a cathode electrolysis chamber plate, and an anode electrolysis chamber plate. The cathode electrolysis chamber is located between the anion exchange separator and the cathode plate, and the anode electrolysis chamber plate is located between the anion exchange separator and the anode plate. The anode plate can generate highly oxidizing hydroxyl radicals in the anode electrolysis chamber, thereby oxidizing the wastewater in the anode electrolysis chamber, effectively reducing the organic matter content in the wastewater, and achieving the treatment of organic wastewater. Furthermore, the anion exchange separator can prevent cations (mainly calcium and magnesium ions) in the anode electrolysis chamber from moving to the cathode electrolysis chamber, reducing the problem of scaling on the cathode plate surface caused by excessively high cation concentrations in the cathode electrolysis chamber. This avoids the need for frequent cleaning of the cathode plate, ensuring that the electrocatalytic oxidation device can work continuously for a long time, thereby improving wastewater treatment efficiency.

[0020] This electrocatalytic oxidation device uses a nylon mesh to separate the cathode and anode electrolysis chambers, eliminating the need for traditional anion exchange membranes. This avoids the high costs associated with membrane fouling and replacement, and extends the lifespan of the equipment, thereby effectively reducing the operating costs of the device.

[0021] The anode and cathode plates of this electrocatalytic oxidation device are arranged alternately, and its electrolysis components are located between the anode and cathode plates. The device has the advantages of simple structural design, small footprint, and strong scalability. It can adapt to the installation needs of industrial sites of different sizes, thus improving the versatility of the equipment. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of an in vitro scaling electrocatalytic oxidation device according to an embodiment of the present invention.

[0023] Figure 2 This is a right view of the overall structure of an external scaling electrocatalytic oxidation device according to an embodiment of this utility model.

[0024] Figure 3 This is a formal drawing of the main components of an in vitro scaling electrocatalytic oxidation device according to an embodiment of this utility model.

[0025] In the above figure: 1-Cathode plate, 11-Cathode connecting rod, 2-Anode plate, 21-Anode connecting rod, 3-Anion exchange partition, 31-Nylon mesh, 4-Cathode electrolysis chamber plate, 41-Mesh structure, 5-Anode electrolysis chamber plate, 6-Insulation layer, 7-Insulation base, 8-Mounting bolt, 81-Inlet pipe, 82-Outlet pipe. Detailed Implementation

[0026] To make the objectives, technical solutions and advantages of this utility model clearer, the embodiments of this utility model will be further described below with reference to the accompanying drawings.

[0027] Please refer to Figures 1 to 3 This utility model discloses an external scaling-type electrocatalytic oxidation device, comprising an electrode plate and an electrolysis assembly. The electrode plate includes a cathode plate 1, an anode plate 2, and the electrolysis assembly. The electrolysis assembly includes an anion exchange separator 3, a cathode electrolysis chamber plate 4, and an anode electrolysis chamber plate 5. The electrolysis assembly is disposed between the cathode plate 1 and the anode plate 2. Specifically, the anion exchange separator 3 is located between the cathode plate 1 and the anode plate 2, the cathode electrolysis chamber is located between the anion exchange separator 3 and the cathode plate 1, and the anode electrolysis chamber plate 5 is located between the anion exchange separator 3 and the anode plate 2. 2. The negative and positive terminals of the electrolysis power supply are connected respectively; the anion exchange separator 3 is provided with a nylon mesh 31 in the middle. The nylon mesh 31 is a nylon mesh with a mesh size greater than 400. The nylon mesh 31 allows anions and water molecules to pass through but blocks cations. The hollow area in the middle is sandwiched between the electrode plate and the two sides of the anion exchange separator 3, thereby forming an electrolysis chamber structure. Thus, the cathode electrolysis chamber plate 4 and the anode electrolysis chamber plate 5 are respectively provided with electrolysis chambers, wherein the electrolysis chamber in the cathode electrolysis chamber plate 4 is the cathode electrolysis chamber, and the electrolysis chamber in the anode electrolysis chamber plate 5 is the anode electrolysis chamber.

[0028] The electrolysis chamber is provided with an inlet and an outlet at its upper and lower ends, respectively.

[0029] When this external scaling electrocatalytic oxidation device is working, the wastewater to be treated enters the cathode electrolysis chamber plate 4 and the anode electrolysis chamber plate 5 through the inlet 81. The wastewater in the anode electrolysis chamber plate 5 comes into contact with the surface of the anode plate 2. Under the action of electrolysis, the anode plate 2 generates highly oxidizing hydroxyl radicals in the anode electrolysis chamber, thereby oxidizing the wastewater in the anode electrolysis chamber, effectively reducing the organic matter content in the wastewater, and realizing the treatment of organic wastewater. The cations (mainly calcium and magnesium ions) in the anode electrolysis chamber do not pass through the nylon mesh 31, and the cation concentration in the cathode electrolysis chamber plate 4 does not increase. Moreover, the cations are close to the cathode plate 1, and the hydroxide ions in the cathode electrolysis chamber plate 4 are close to the nylon mesh 31. Therefore, scaling will hardly occur on the cathode plate 1. The treated wastewater is discharged from the cathode and anode electrolysis chambers through the outlet 82 and mixes with the water in the external water treatment container, where it forms scale and precipitates.

[0030] This device effectively reduces organic matter in wastewater (mainly organic matter in the wastewater within the anode electrolysis chamber). It is particularly suitable for the direct treatment of wastewater with low organic matter concentrations or the pretreatment of wastewater with high organic matter concentrations. It also effectively avoids the need for frequent cleaning of the cathode plate, ensuring the electrocatalytic oxidation device can operate continuously for extended periods, thereby improving wastewater treatment efficiency. Furthermore, the device uses a nylon mesh to separate the anode and cathode electrolysis chambers, eliminating the need for traditional anion exchange membranes. This avoids the high costs associated with membrane fouling and replacement, and extends the device's lifespan, effectively reducing operating costs. The anode and cathode plates are staggered, with the electrolysis components positioned between them. This structure allows for sequential stacking, offering strong scalability. It features a simple design and small footprint, adapting to the installation needs of industrial sites of varying sizes, thus improving the device's versatility.

[0031] In a preferred embodiment, the electrocatalytic oxidation device further includes a cathode contact rod 11 and an anode contact rod 21. The tops of the cathode plate 1 and anode plate 2 are respectively provided with cathode contact ears and anode contact ears. The cathode contact ears are connected to the negative terminal of the electrolytic power supply, and the anode contact ears are connected to the positive terminal of the electrolytic power supply. The cathode contact ears and anode contact ears are respectively provided with cathode contact holes and anode contact holes. All cathode contact holes on the cathode plate 1 are aligned, and all anode contact holes on the anode plate 2 are aligned, with the cathode contact holes and anode contact holes arranged alternately. The device also includes cathode contact rods 11 and 21. The cathode contact rod 11 passes through all the cathode contact holes, and the anode contact rod 21 passes through all the anode contact holes. The cathode contact rod 11 is connected to the negative terminal of the electrolytic power supply, and the anode contact rod 21 is connected to the positive terminal of the electrolytic power supply. The contact ear and contact hole structure of this electrode facilitates the connection of the cathode plate 1 and anode plate 2 to the electrolytic power supply.

[0032] In a preferred embodiment, the electrocatalytic oxidation device further includes an insulating base 7, on which the cathode plate 1, anode plate 2, anion exchange separator 3, cathode electrolysis chamber plate 4, and anode electrolysis chamber plate 5 are all supported. Furthermore, there are two cathode plates 1 and two anode plates 2, with an insulating layer 6 on the outermost surfaces of both the cathode plate 1 and anode plate 2. The anion exchange separator 3, cathode electrolysis chamber plate 4, and anode electrolysis chamber plate 5 are all made of insulating material. The insulating layer 6 and the insulating base 7 reduce the risk of electric shock to personnel who come into contact with the outer cathode and anode plates 2.

[0033] In a preferred embodiment, the device further includes multiple mounting bolts 8, each comprising a mounting screw and a fastening nut. The fastening nut is threaded onto the end of the mounting screw. The edges of the cathode plate 1, anode plate 2, anion exchange separator 3, cathode electrolysis chamber plate 4, and anode electrolysis chamber plate 5 are all provided with mounting clamping holes. The cathode plate 1, anode plate 2, anion exchange separator 3, cathode electrolysis chamber plate 4, and anode electrolysis chamber plate 5 are stacked sequentially. The mounting screw passes through the multiple mounting clamping holes sequentially, and the fastening nut is pressed against the outermost anode plate 2. The mounting bolts 8 allow the entire device to have a multi-layered, stacked structure and can lock this multi-layered stacked structure. The length of the mounting screw can be adjusted according to the thickness of the entire device (i.e., the number of electrode plates and electrolysis components), thereby improving the scalability of the device.

[0034] In a preferred embodiment, the electrolysis chamber is provided with a mesh structure 41, the mesh structure 41 having a pore size of 0.1-2 mm and a porosity of 60-80%. The mesh structure 41 can be made by filling the electrolysis chamber with microporous fibers, or by etching or laser engraving the cathode and anodic electrolysis chamber plates 5. The mesh structure 41 in the electrolysis chamber can uniformly disperse the water flow, preventing the wastewater to be treated from forming a "short-circuit" flow path within the electrolysis chamber, and ensuring that the wastewater fully contacts the electrode surface.

[0035] In a preferred embodiment, the anode plate 2 is a titanium suboxide substrate, and a catalytic layer doped with carbon quantum dots is provided on the surface of the titanium suboxide substrate. This anode plate 2 structure can effectively improve its electrocatalytic oxidation efficiency for organic matter in wastewater in the anode electrolysis chamber, thereby improving the removal effect of organic matter from wastewater in the anode electrolysis chamber.

[0036] In a preferred embodiment, an inlet pipe 81 and an outlet pipe 82 are fixed to the outer side of the anode plate 2. The upper ends of the cathode plate 1, anode plate 2, anion exchange partition 3, cathode electrolysis chamber plate 4, and anode electrolysis chamber plate 5 are respectively provided with four outlet holes, and the lower ends are each provided with four inlet holes. This forms four inlet channels and four outlet channels at the upper ends of the four entire devices. The inlet pipe 81 is connected to all inlet channels, and the outlet pipe 82 is connected to all outlet channels. The cathode electrolysis chamber has two inlets at the bottom and two outlets at the top. The two inlets on the cathode electrolysis chamber are connected to the two inlet channels and the cathode electrolysis chamber, and the two outlets on the cathode electrolysis chamber are connected to the two inlet channels and the cathode electrolysis chamber. The anode electrolysis chamber has two inlets at the bottom and two outlets at the top. The two inlets on the anode electrolysis chamber are connected to the other two inlet channels and the anode electrolysis chamber, and the two outlets on the anode electrolysis chamber are connected to the other two outlet channels and the anode electrolysis chamber. The convenient inlet and outlet water structure allows for easy expansion of the electrocatalytic oxidation device.

[0037] In this document, the directional terms such as front, back, top, and bottom are defined based on the location of the components in the accompanying drawings and their relative positions to each other, solely for the purpose of clarity and convenience in expressing the technical solution. It should be understood that the use of these directional terms should not limit the scope of protection claimed in this application.

[0038] Where there is no conflict, the above embodiments and features described herein can be combined with each other.

[0039] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An external scaling-type electrocatalytic oxidation device, characterized in that: It includes a cathode plate (1), an anode plate (2), an anion exchange separator (3), a cathode electrolysis chamber plate (4), and an anode electrolysis chamber plate (5); The cathode plate (1) and the anode plate (2) are respectively connected to the negative and positive terminals of the electrolysis power supply; Anion exchange separator (3) is located between cathode plate (1) and anode plate (2), cathode electrolysis chamber is located between anion exchange separator (3) and cathode plate (1), and anode electrolysis chamber plate (5) is located between anion exchange separator (3) and anode plate (2). The anion exchange separator (3) is provided with a nylon mesh (31) in the middle to allow anions to pass through and prevent cations from passing through; the cathode electrolysis chamber plate (4) and the anode electrolysis chamber plate (5) are respectively provided with electrolysis chambers, and the upper and lower ends of the electrolysis chambers are respectively provided with water inlet and water outlet.

2. The external scaling electrocatalytic oxidation device according to claim 1, characterized in that: The device includes multiple cathode plates (1), anode plates (2), anion exchange partitions (3), cathode electrolysis chamber plates (4), and anode electrolysis chamber plates (5). The cathode plates (1) and anode plates (2) are arranged alternately, and the cathode electrolysis chamber plates (4), anion exchange partitions (3), and anode electrolysis chamber plates (5) are arranged sequentially between adjacent cathode plates (1) and anode plates (2).

3. The in vitro scaling electrocatalytic oxidation device according to claim 2, characterized in that: The top of the cathode plate (1) and the anode plate (2) are respectively provided with cathode contact ears and anode contact ears. The cathode contact ears are connected to the negative terminal of the electrolysis power supply, and the anode contact ears are connected to the positive terminal of the electrolysis power supply.

4. The in vitro scaling-type electrocatalytic oxidation device according to claim 3, characterized in that: The cathode and anode are respectively provided with cathode connection holes and anode connection holes. The cathode connection holes on all cathode plates (1) are aligned, and the anode connection holes on all anode plates (2) are aligned. The cathode connection holes and anode connection holes are staggered.

5. The in vitro scaling electrocatalytic oxidation device according to claim 4, characterized in that: It also includes a cathode connecting rod (11) and an anode connecting rod (21), the cathode connecting rod (11) passing through all the cathode connecting holes, the anode connecting rod (21) passing through all the anode connecting holes, the cathode connecting rod (11) being connected to the negative terminal of the electrolysis power supply, and the anode connecting rod (21) being connected to the positive terminal of the electrolysis power supply.

6. The in vitro scaling electrocatalytic oxidation device according to claim 2, characterized in that: There are two cathode plates (1) and two anode plates (2). The outer surfaces of the outermost cathode plates (1) and anode plates (2) are provided with an insulating layer (6).

7. The in vitro scaling electrocatalytic oxidation device according to claim 1, characterized in that: It also includes multiple mounting bolts (8), each mounting bolt (8) including a mounting screw and a fastening nut. The fastening nut is threaded to the end of the mounting screw. The cathode plate (1), anode plate (2), anion exchange partition (3), cathode electrolysis chamber plate (4), and anode electrolysis chamber plate (5) are all provided with mounting clamping holes on their edges. The cathode plate (1), anode plate (2), anion exchange partition (3), cathode electrolysis chamber plate (4), and anode electrolysis chamber plate (5) are stacked in sequence. The mounting screw passes through multiple mounting clamping holes in sequence, and the fastening nut is pressed onto the outermost cathode plate (1).

8. The external scaling electrocatalytic oxidation device according to claim 1, characterized in that: The electrolysis chamber is equipped with a mesh structure (41).

9. The in vitro scaling electrocatalytic oxidation device according to claim 1, characterized in that: The anode plate (2) is a sub-titanium oxide substrate, and a catalyst layer is provided on the surface of the sub-titanium oxide substrate.

10. The external scaling electrocatalytic oxidation device according to claim 1, characterized in that: It also includes an insulating base (7), and the cathode plate (1), anode plate (2), anion exchange partition (3), cathode electrolysis chamber plate (4) and anode electrolysis chamber plate (5) are all supported on the insulating base (7).

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