Efficient three-dimensional electrocatalytic oxidation device

Abstract

The utility model is suitable for the technical field of wastewater treatment, and provides an efficient three-dimensional electrocatalytic oxidation device, which comprises a direct current power supply, an electrocatalytic oxidation device and an electrocatalytic oxidation device, a cathode and an anode are arranged in the electrolytic bath, the cathode and the anode are respectively an anode plate and a cathode plate, the anode plate is connected with the anode of the direct-current power supply through a wire, and the cathode plate is connected with the cathode of the direct-current power supply through a wire; the water inlet pump is arranged on one side of the electrolytic bath and is used for pumping water; and the water outlet end of the water inlet pump extends into the electrolytic bath through a connecting pipe. According to the efficient three-dimensional electrocatalytic oxidation device provided by the scheme, the problems that in an existing three-dimensional electrolytic oxidation device, a particle electrode fixed bed form easily causes electrode surface scaling failure, a fluidized bed form easily abrades an electrode plate and a particle electrode, and a large amount of chlorine generated during treatment of chlorine-containing wastewater causes adverse effects on a subsequent process are solved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to wastewater treatment technical field especially relates to a kind of efficient three-dimensional electrocatalytic oxidation device. BACKGROUND

[0002] With the development of industry, industrial wastewater increases and is complex in composition, with high salt content. Traditional biological treatment method is difficult to meet increasingly stringent discharge standards, especially for treating high-salt, refractory wastewater. High-salt wastewater treatment has become a research hotspot, and physical adsorption and chemical oxidation are common methods. Physical adsorption requires regeneration, high energy consumption and possible secondary pollution; the theory of advanced oxidation process in chemical oxidation is not perfect, and application has challenges.

[0003] Currently, advanced oxidation technology, especially composite catalytic oxidation process, is concerned due to its advantages of no need for oxidizing agent, no secondary pollution and high treatment depth. Electrolytic catalytic oxidation degrades organic matter through anode oxidation and cathode generated oxidizing substances, but has problems of low oxidation efficiency and high energy consumption. Three-dimensional electrolysis can improve efficiency, but fixed bed form is easy to scale and fail, and fluidized bed is easy to wear electrode and particle, and chlorine ion treatment will produce chlorine gas to affect subsequent process. SUMMARY

[0004] The utility model provides a kind of efficient three-dimensional electrocatalytic oxidation device, to solve the problems of particle electrode fixed bed form in existing three-dimensional electrolytic oxidation device, which is easy to cause electrode surface scaling and failure, fluidized bed form is easy to wear electrode plate and particle electrode, and a large amount of chlorine gas is produced when treating chlorine-containing wastewater, which adversely affects the subsequent process.

[0005] The utility model is realized as follows: a kind of efficient three-dimensional electrocatalytic oxidation device, comprising: a direct current power supply for providing the electrical energy required for electrolysis;Electrolytic cell, built-in cathode and anode, the cathode and anode are anode plate and cathode plate respectively, the anode plate is connected with the positive pole of direct current power supply through wire, and the cathode plate is connected with the negative pole of direct current power supply through wire;Water inlet pump for pumping water is arranged on one side of the electrolytic cell, the water outlet end of the water inlet pump extends into the electrolytic cell through the connecting pipe;Powder catalyst, the powder catalyst is arranged in the electrolytic cell;Ceramic membrane assembly is arranged at the water outlet end of electrolytic cell, and the treated wastewater is sucked out by external negative pressure pump and subjected to solid-liquid separation;The reflux system includes reflux pipeline, and is used for refluxing the powder catalyst separated by ceramic membrane to the water inlet end of electrolytic cell.

[0006] Preferably, the anode plate is a titanium-based coated mesh electrode;The cathode plate is titanium mesh;The anode plate and the cathode plate are provided with at least one group, and are alternately and parallel arranged, and a water passing hole is arranged between the membrane pool and the electrolytic cell.

[0007] Preferably, the air inlet end of the aeration pipe is provided with a gas filtering mechanism, the gas filtering mechanism comprising: a filtering box in communication with the air inlet end of the aeration pipe, a settling chamber and a filtering chamber for containing water being arranged in the filtering box; a gas guide pipe arranged in the filtering box for communicating the settling chamber and the filtering chamber; a filter plate arranged in the filtering chamber for filtering gas; a cover plate fixedly connected with an air inlet pipe for connecting an aeration fan at the top of the settling chamber, the air outlet end of the air inlet pipe extending into the settling chamber.

[0008] Preferably, one side of the settling chamber is fixedly connected with a blowdown pipe, and a valve is arranged on the blowdown pipe.

[0009] Preferably, one side of the filtering chamber is assembled with a sealing door through a hinge, and a handle lock is arranged on the sealing door.

[0010] Preferably, one side of the settling chamber is provided with a visual observation window and a scale mark.

[0011] Preferably, a placement plate is symmetrically arranged in the filtering chamber, and the placement plate is used for placing the filter plate.

[0012] Compared with the related art, the efficient three-dimensional electro-catalytic oxidation device has the following beneficial effects:

[0013] The wastewater to be treated is pumped to the electrolytic tank by the water inlet pump, the electrolytic catalytic oxidation reaction is carried out by the cooperation of the direct current power supply, the anode and cathode electrodes (anode plate and cathode plate) and the powder catalyst, the clean gas filtered by the filtering box is blown into the aeration pipe to fluidize the powder catalyst, and the reaction efficiency is improved. The wastewater after electrolysis and the powder catalyst enter the membrane pool through the water hole, are separated by the ceramic membrane assembly, and the powder catalyst is circulated back by the backflow pump. The blowdown pipe is used for discharging impurities in the settling chamber, and the sealing door is convenient for maintaining the filtering chamber. Overall, the problems of easy scaling and wear of the particle electrode and the influence of residual chlorine on the subsequent process are solved, the organic matter degradation efficiency is improved, the balance between the water quality and the catalyst concentration is ensured, the equipment wear and maintenance cost are reduced, and the wastewater treatment is stably and efficiently realized. BRIEF DESCRIPTION OF DRAWINGS

[0014] Fig. 1 It is a front view of the main structure of the efficient three-dimensional electro-catalytic oxidation device provided by the utility model;

[0015] Fig. 2 It is a front view of the main structure of the filtering box in the utility model;

[0016] Fig. 3 It is a front view of the main structure of the filtering box in the utility model.

[0017] Fig. 1 is a direct current power supply; 2, water inlet pump; 3, electrolytic cell; 4, powder catalyst; 5, ceramic membrane assembly; 6, negative pressure pump; 7, backflow pump; 8, aeration pipe; 9, membrane cell; 10, cathode plate; 11, anode plate; 12, water passage; 13, filter box; 14, settling chamber; 15, filter chamber; 16, cover plate; 17, air inlet pipe; 18, air guide pipe; 19, filter plate; 20, blowdown pipe. DETAILED DESCRIPTION

[0018] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used in the description herein is for describing particular embodiments only and is not intended to be limiting of the application; the terms "comprising," "including," and "having," and variations thereof, are intended to cover a non-exclusive inclusion; the terms "first," "second," and the like, are used merely to distinguish one element from another and are not intended to designate a particular order or sequence.

[0019] Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are they necessarily mutually exclusive or alternative embodiments. It is expressly understood that the embodiments described herein are merely examples from a whole class of comparable embodiments which those skilled in the art will readily appreciate. It is also expressly understood that the description herein and the claims that follow are intended to cover all such variations as will become apparent to those in the art to which this application is related.

[0020] The utility model embodiment provides a kind of efficient three-dimensional electro-catalytic oxidation device, as shown in Figs. 1-3 As shown in the figure, the efficient three-dimensional electro-catalytic oxidation device includes: a direct current power supply 1 for providing the electrical energy required for electrolysis;An electrolytic cell 3 with built-in anode and cathode, the anode and cathode are anode plate 11 and cathode plate 10 respectively, the anode plate 11 is connected to the positive electrode of the direct current power supply 1 by wire, and the cathode plate 10 is connected to the negative electrode of the direct current power supply 1 by wire;A water inlet pump 2 is arranged on one side of the electrolytic cell 3 for pumping water, the outlet of the water inlet pump 2 extends into the electrolytic cell 3 through a connecting pipe;A powder catalyst 4 as a particle electrode is in a fluidized state in the electrolytic cell 3 through a blowing system to promote the full contact of wastewater and catalyst;A ceramic membrane assembly 5 is arranged at the outlet of the electrolytic cell 3, the treated wastewater is sucked out by an external negative pressure pump 6, and solid-liquid separation is carried out;A backflow system including a backflow pipeline is used to return the powder catalyst 4 separated by the ceramic membrane to the water inlet end of the electrolytic cell 3.

[0021] It should be noted that the working principle of electrolytic catalytic oxidation is that the anode directly oxidizes the organic matter through the catalyst coating, and the cathode generates a large amount of oxidizing substances such as H2O2, O3 on the surface under the condition that the dissolved oxygen content in the wastewater is high, and under the condition that the wastewater contains a high content of chloride ions, hypochlorous acid and other oxidizing substances will be generated, which will oxidize and decompose the organic matter in the wastewater into small molecules, CO2 and H2O2 through electron transfer and other ways, so as to achieve the purpose of degrading COD. However, the existence time of the oxidizing substances generated by electrolysis in water is short, which leads to low oxidation efficiency and high energy consumption. In order to solve this problem, electrolytic catalytic oxidation adds catalysts (particle electrodes) in the middle of the electrode to form a fixed bed or a fluidized bed, which is also called "three-dimensional electrolytic oxidation". Three-dimensional electrolysis can improve the oxidation efficiency of wastewater for a short time, but it has the following problems: the particle electrodes are accumulated between the electrode plates to form a fixed bed, and the particle electrodes are fixed and immovable, so the particle end close to the anode plate is induced to be the negative pole of the particle, and during the electrolysis process, the negative pole of the particle will generate hydroxyl radicals, which will generate precipitates with the calcium and magnesium ions enriched on the surface to cover the surface of the particle electrode and cause the particle electrode to lose its function; the particle electrodes rely on the bottom air blowing to form a fluidized bed, which will not cause surface scaling due to the exchange of positive and negative induction, but the particles are large and will cause wear to the electrocatalytic electrode plate, which will cause the coating of the electrode plate to be damaged, and the wear of the particles in the fluidized state will cause the amount of particle electrodes to decrease and the suspended solids in the effluent to increase. Furthermore, when electrocatalysis is used to treat wastewater containing chlorine, a large amount of chlorine gas will be dissolved in the wastewater to form hypochlorous acid, which will have adverse effects on the subsequent processes (biochemical and evaporation), mainly in the form of toxicity to the microorganisms in the biochemical process and corrosion of the evaporation material.

[0022] In the embodiment, the wastewater to be treated is pumped by the water inlet pump 2 to the electrolytic cell 3, the water outlet end of the water inlet pump 2 extends into the electrolytic cell 3 through a connecting pipe; the electrolytic cell 3 is internally provided with anode and cathode electrodes, the anode plate 11 is connected with the positive electrode of the direct current power supply 1 through a wire, the cathode plate 10 is connected with the negative electrode of the direct current power supply 1 through a wire, and the direct current power supply 1 provides the required power for electrolysis; the powder catalyst 4 is used as a particle electrode and is in a fluidized state in the electrolytic cell 3 through a blowing system, part of the organic matter in the wastewater is catalytically degraded on the surface of the anode plate 11, and part is adsorbed into the mesoporous of the powder catalyst 4, and the powder catalyst 4 is in an induced electrode state to perform mineralization degradation under the induction of the electric field; at the same time, the chloride ions in the wastewater are electrolyzed into chlorine near the anode plate 11, part of the chlorine escapes, part of the chlorine generates hypochlorous acid, and the hypochlorous acid is decomposed by the metal oxide in the powder catalyst 4, and the chlorine escapes; the wastewater after electrolysis and the powder catalyst 4 enter the membrane pool 9 through the water hole, the ceramic membrane assembly 5 is used to suck the treated wastewater out through the external negative pressure pump 6, and solid-liquid separation is performed, and the powder catalyst 4 is circulated to the water inlet end of the electrolytic cell 3 through the backflow pump 7 and the backflow pipeline for recycling; the problems related to the particle electrode are solved: the powder catalyst 4 is used as the particle electrode of three-dimensional electrolysis, the problems of scaling or self-wear of the large-particle-size particle electrode are avoided, the electrolytic electrode can be effectively protected, and the problems of scaling of the electrode surface of the existing particle electrode in the fixed bed form, wear of the electrode plate and the particle electrode in the fluidized bed form are solved; the catalytic oxidation performance is improved: the powder catalyst 4 is added with various metal oxides as catalytic components, the catalytic oxidation efficiency on the organic matter is improved, the residual chlorine concentration in the effluent is reduced, the stable operation of the subsequent process is facilitated, and the problem that a large amount of chlorine gas is generated when the wastewater containing chlorine is treated and the subsequent process is adversely affected is solved.

[0023] In the further preferred embodiment of the utility model, the anode plate 11 is a titanium-based coating mesh electrode, the cathode plate 10 is a titanium mesh, and at least one group of anode plates 11 and cathode plates 10 are alternately and parallelly arranged, and a water passing hole 12 is arranged between the membrane pool and the electrolytic cell.

[0024] In the present embodiment, during the electrolysis process, the gas is blown into the electrolytic tank 3 through the aeration pipe 8 to keep the powder catalyst 4 in a fluidized state in the electrolytic tank 3, so that the wastewater can be fully contacted with the powder catalyst 4, and the electrolytic catalytic reaction is promoted; the wastewater after electrolysis and the powder catalyst 4 flow into the membrane pool 9 through the water hole 12, the membrane pool 9 is used for receiving and temporarily storing the wastewater separated by the ceramic membrane assembly 5; the backflow pump 7 in the membrane pool 9 backflows the wastewater containing the powder catalyst 4 to the electrolytic tank 3, realizing the recycling of the powder catalyst 4 and maintaining the stable concentration of the catalyst in the system; promoting the reaction: the powder catalyst 4 is fluidized by blowing gas through the aeration pipe 8, which increases the contact area between the powder catalyst 4 and the wastewater, improves the efficiency of the electrolytic catalytic reaction, and makes the organic matter in the wastewater be more fully degraded; realizing solid-liquid separation and temporary storage: the setting of the membrane pool 9 provides a temporary storage space for the wastewater separated by the ceramic membrane assembly 5, which is convenient for further treatment of the wastewater; on the other hand, it also provides a transfer site for the wastewater containing the powder catalyst 4; guaranteeing the catalyst circulation and concentration stability: the wastewater containing the powder catalyst 4 in the membrane pool 9 is backflowed to the electrolytic tank 3 through the backflow pump 7, which ensures the recycling of the powder catalyst 4 in the system and guarantees the concentration balance of the catalyst in the system, thereby stabilizing the catalytic oxidation effect and improving the treatment efficiency; the aeration pipe 8 is used to blow gas into the electrolytic tank 3 to provide power for the fluidization of the powder catalyst 4; the membrane pool 9 is located behind the ceramic membrane assembly 5, and the water hole 12 is provided between the electrolytic tank 3 and the membrane pool 9, which is convenient for the wastewater and the powder catalyst 4 to flow into the membrane pool 9, and the membrane pool 9 is connected with the electrolytic tank 3 through the backflow pump 7, realizing the backflow of the wastewater containing the powder catalyst 4; the anode plate 11 adopts titanium-based coated mesh electrode, and the cathode plate 10 adopts titanium mesh; such material and structure design has good electrical conductivity and chemical stability, which can effectively promote the electrolysis reaction, improve the electrolysis efficiency, and enhance the degradation ability of organic matter in the wastewater; the anode plate 11 and the cathode plate 10 are at least one set and arranged in an alternating parallel manner, the anode plate 11 is preferably a titanium-based coated mesh electrode; the cathode plate is preferably a titanium mesh, the mesh size of the titanium mesh is 3mmx7mm; the anode plate 11 and the cathode plate 10 are at least one set and arranged in an alternating parallel manner, and the distance between them is 3cm, so that the electric field distribution in the electrolytic tank 3 is more uniform, which is beneficial to the full reaction of ions and organic matter in the wastewater in the electric field, and improves the stability and consistency of the treatment effect; the water hole 12 is provided between the membrane pool 9 and the electrolytic tank 3, which is convenient for the wastewater after electrolysis and the powder catalyst 4 to flow smoothly into the membrane pool 9, and provides convenience for the subsequent solid-liquid separation through the ceramic membrane assembly 5 and the recycling of the powder catalyst 4, and guarantees the smooth operation of the entire wastewater treatment process.

[0025] The utility model discloses further preferable embodiment, the gas filter mechanism is provided to the air inlet end of aeration pipe 8, the gas filter mechanism includes: with the filter box 13 of aeration pipe 8 air inlet end intercommunication, be provided with the settling chamber 14 and filter chamber 15 for containing water in the filter box 13, be provided with the gas guide pipe 18 for intercommunication settling chamber 14 with filter chamber 15 in the filter box 13, be provided with the filter plate 19 for filtering gas in the filter chamber 15, the fixed intercommunication for connecting aeration fan's air inlet pipe 17 is set up on the cover plate 16 of the top of settling chamber 14, the air outlet end of air inlet pipe 17 extends into settling chamber 14.

[0026] In the embodiment, aeration fan inputs gas into the settling chamber 14 of filter box 13 through air inlet pipe 17, the air outlet end of air inlet pipe 17 extends into settling chamber 14, makes gas bubble in the water of settling chamber 14, and the large particle impurities in gas are preliminarily removed through the settling action of water, and the gas after preliminary settling enters filter chamber 15 through gas guide pipe 18, and in filter chamber 15, gas is filtered again through filter plate 19, and the small impurities remaining in gas are further removed, and the clean gas after filtering twice enters aeration pipe 8 from the air outlet end of filter box 13, and then is blown into electrolytic cell 3 through aeration pipe 8, so that powder catalyst 4 keeps fluidized state in electrolytic cell 3, and the gas entering aeration pipe 8 is filtered twice through the settling chamber 14 and filter chamber 15, and the large particle impurities are removed through the settling action of water in settling chamber 14, and the small impurities are filtered through filter plate 19 in filter chamber 15, so that the gas cleanliness entering electrolytic cell 3 is effectively improved, and the powder catalyst 4 fluidization effect and electrolytic reaction are avoided to be affected by the impurities entering electrolytic cell 3 along with gas, and the clean gas can reduce the abrasion of aeration pipe 8 and internal equipment of electrolytic cell 3, prolong the service life of equipment, and reduce equipment maintenance cost, and the filtered gas can more stably provide fluidization power for powder catalyst 4, ensure that powder catalyst 4 always keeps good fluidized state in electrolytic cell 3, improve the contact efficiency of waste water and powder catalyst 4, and improve the stability and efficiency of electrolytic catalytic reaction.

[0027] In the further preferable embodiment of the utility model, the one side of the settling chamber 14 is fixedly connected with a blowdown pipe 20, and a valve is arranged on the blowdown pipe 20.

[0028] In the embodiment, when the water in the settling chamber 14 settles the impurities in the gas, the impurities will gradually deposit at the bottom of the settling chamber 14, the valve on the blowdown pipe 20 is opened regularly, and the impurities and part of the sewage accumulated at the bottom of the settling chamber 14 are discharged through the blowdown pipe 20. After the blowdown is completed, the valve is closed to ensure the normal operation of the settling chamber 14 so as to continue to settle and filter the entering gas.

[0029] The further preferable embodiment of the utility model discloses, the filter chamber 15 one side is equipped with the sealing door through the hinge, be provided with handle lock on the sealing door.

[0030] In this embodiment, in normal operation, the sealing door is closed and locked by the handle lock, ensuring the sealing of the filter chamber 15, so that the gas can only pass through the filter plate 19 according to the predetermined path for filtering. When it is necessary to replace, clean or overhaul the filter plate 19 inside the filter chamber 15, open the handle lock, and use the hinge to rotate and open the sealing door, so that the operator can enter the filter chamber 15 to perform the corresponding operation. After the operation is completed, the sealing door is closed and locked again by the handle lock.

[0031] In the further preferable embodiment of the utility model, the settling chamber 14 is provided with a visual observation window and a scale mark on one side.

[0032] In this embodiment, during the operation of the device, the operator can directly observe the situation in the settling chamber 14 through the visual observation window on one side of the settling chamber 14, including the clarity of the water, the settlement of the impurities, etc. At the same time, the scale mark can be used to accurately read the height of the water level in the settling chamber 14. According to the observed settlement of the impurities and the water level, it is judged whether it is necessary to perform the blowdown operation or supplement water, if it is found that the impurities are accumulated more or the water level is abnormal, the corresponding measures can be taken in time, such as opening the valve on the blowdown pipe 20 to blowdown, or adding appropriate water to maintain the normal settlement and filtration function.

[0033] In the further preferable embodiment of the utility model, the filter chamber 15 is provided with a placing plate symmetrically.

[0034] In this embodiment, when installing the filter plate 19, the filter plate 19 is placed on the placing plate symmetrically arranged in the filter chamber 15. When it is necessary to replace the filter plate 19, the sealing door is opened, and the old filter plate is directly taken out from the placing plate, and then the new filter plate is placed on the placing plate to complete the replacement operation. During the gas filtration process, after the gas enters the filter chamber 15 from the gas guide pipe 18, it is filtered through the filter plate 19 on the placing plate, and then enters the aeration pipe 8 from the gas outlet end of the filter chamber 15.

[0035] Compared with the related art, the wastewater to be treated is pumped to the electrolytic tank 3 by the water inlet pump 2, the direct current power supply 1 is used for power supply, the cathode and anode (anode plate 11, cathode plate 10) cooperate with the powder catalyst 4 to perform electrolytic catalytic oxidation reaction, the clean gas filtered through the filter box 13 is blown into through the aeration pipe 8 to fluidize the powder catalyst 4, and the reaction efficiency is improved.

[0036] It should be noted that the circuits, electronic components and modules involved in the present application are all prior art, and those skilled in the art can realize them without further description.

[0037] In several embodiments provided by the present application, it should be understood that the disclosed device can be realized by other ways.

[0038] The above embodiments are only used to illustrate the technical solutions of the present application, and not to limit the protection scope of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, not all the embodiments. Based on these embodiments, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application. Although the present application has been described in detail with reference to the above embodiments, those skilled in the art can combine, add or delete the features of the embodiments according to the circumstances without creative labor, so as to obtain different, but essentially not deviating from the concept of the present application. Other technical solutions, which also belong to the scope of protection of the present application.

Claims

1. A high efficiency three-dimensional electro-catalytic oxidation device, characterized in that, The utility model relates to a kind of waste water treatment device, including: Direct-current power supply for providing the electricity required for electrolysis; Electrolytic cell, built-in cathode and anode, the cathode and anode are anode plate and cathode plate respectively, anode plate is connected with the positive pole of direct-current power supply by wire, cathode plate is connected with the negative pole of direct-current power supply by wire; Water inlet pump for pumping water is arranged in one side of the electrolytic cell, and the water outlet end of the water inlet pump extends into the electrolytic cell through connecting pipe; Powder catalyst, the powder catalyst is arranged in the electrolytic cell; Ceramic membrane assembly is arranged at the water outlet end of electrolytic cell, and treated wastewater is sucked out by external negative pressure pump, and solid-liquid separation is carried out; Backflow system, including backflow pipeline, for backflowing powder catalyst separated by ceramic membrane to the water inlet end of electrolytic cell.

2. The high efficiency three-dimensional electro-catalytic oxidation device of claim 1, wherein The anode plate is titanium-based coating mesh electrode, and the cathode plate is titanium mesh.

3. The high efficiency three-dimensional electro-catalytic oxidation device of claim 2, wherein, The water hole is arranged between membrane cell and electrolytic cell. The gas inlet end of aeration pipe is provided with gas filtering mechanism, and the gas filtering mechanism includes: Filtering box communicated with the gas inlet end of aeration pipe, and the filtering box is provided with sedimentation chamber and filtering chamber for containing water; Air guide pipe is arranged in the filtering box for communicating the sedimentation chamber and the filtering chamber; Filter plate is arranged in the filtering chamber for filtering gas; 4. The high efficiency three-dimensional electro-catalytic oxidation device of claim 3, wherein, Gas inlet pipe for connecting aeration fan is fixedly communicated on the cover plate on the top of the sedimentation chamber, and the gas outlet end of the gas inlet pipe extends into the sedimentation chamber.

5. The high efficiency three-dimensional electro-catalytic oxidation device of claim 3, wherein, Exhaust pipe is fixedly communicated on one side of the sedimentation chamber, and valve is arranged on the exhaust pipe.

6. The high efficiency three-dimensional electro-catalytic oxidation device of claim 3, wherein, Sealing door is assembled on one side of the filtering chamber through hinge, and handle lock is arranged on the sealing door.

7. The high efficiency three-dimensional electro-catalytic oxidation device of claim 3, wherein, Visual observation window and scale mark are arranged on one side of the sedimentation chamber. Placing plate is symmetrically arranged in the filtering chamber, and the placing plate is used for placing the filter plate.

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