Phenolic wastewater treatment device with electro-catalysis coupled with electro-Fenton

Abstract

The utility model relates to the technical field of wastewater treatment, and discloses a phenolic wastewater treatment device with electro-catalysis coupled with electro-Fenton. Comprising a reaction box and an external power supply, the reaction box comprises an electrolytic tank cover and an electrolytic tank which are matched with each other, an electrolytic tank is arranged in the electrolytic tank, an electro-Fenton and electro-catalysis cooperation unit is arranged in the electrolytic tank and is connected with the external power supply, and a liquid supplementing pipeline and a liquid outlet pipeline are respectively arranged on the side wall of the electrolytic tank and are communicated with the electrolytic tank; an aeration cavity is formed in the bottom of the electrolytic tank, is communicated with the electrolytic tank through an air supply hole, and is also communicated with a ventilation pipeline arranged on the side wall of the electrolytic tank. Through the arrangement of the electro-Fenton and electro-catalysis synergistic unit, the negative plate and the positive plate can be used for carrying out electro-Fenton and electro-catalysis synergistic degradation reaction on the phenolic wastewater, so that the treatment effect of synergistic degradation of the wastewater is enhanced; the problem that existing phenol-containing wastewater treatment equipment cannot treat phenol-containing wastewater by fusing electro-catalysis and electro-Fenton technologies is solved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to wastewater treatment technical field, specifically, relate to a kind of phenolic wastewater treatment device of electrocatalysis coupling electric fenton. BACKGROUND

[0002] Coal gasification technology as clean utilization technology obtains rapid development, but simultaneously produces a large amount of coal gasification waste residue, has become another kind of solid waste after fly ash, therefore, coal gasification residue resource utilization is the urgent demand of national ecological environment high-quality development. Phenolic wastewater is a kind of common high toxicity and refractory organic matter in wastewater, in phenolic wastewater, phenolic substances mainly include phenol, cresol and other phenolic derivatives, which is a kind of common organic matter with high toxicity and refractory in wastewater, not only causes harm to agricultural production, growth and reproduction of animals and plants, but also causes serious threat to human health, there is carcinogenic risk.

[0003] Therefore, how to effectively treat phenolic substances in phenolic wastewater has been one of the main problems in phenolic wastewater purification and utilization. Current methods for treating phenolic wastewater include salting-out method, flocculation precipitation method, adsorption method, extraction method, ion exchange method, membrane treatment, chemical precipitation method and the like, however, the above methods all have defects such as low efficiency, high cost and secondary pollution, leading to their inability to be used in large scale in industrial treatment of phenolic wastewater. Electro-catalysis technology is a method for effectively degrading organic matter by electrode catalysis to generate strong free radicals. It overcomes the defect of needing to add oxidizing agent in homogeneous photooxidation method, has advantages such as high treatment efficiency, simple operation, easy automation and good environmental compatibility. In the treatment of phenolic wastewater, electro-catalysis technology can be directly treated without dilution or neutralization adjustment and the like, and has good application prospect. Electric fenton technology is a method for degrading organic matter by using electric fenton reagent (combination of ferrous salt and hydrogen peroxide) under the action of electric field. Electric fenton reagent can generate hydroxyl radicals with strong oxidizing property and electrophilic addition property under the catalysis of iron ions, and these free radicals can oxidize and decompose most organic matter into small molecular substances. Electric fenton technology combines the advantages of electro-catalysis and electric fenton reagent, and can further improve the degradation efficiency of organic matter. However, how to effectively couple the two and use in wastewater treatment is a technical problem to be solved in the field of phenolic wastewater treatment.

[0004] Therefore, it has important practical significance to develop a phenolic wastewater treatment device of electro-catalysis coupling electric fenton. UTILITY MODEL CONTENT

[0005] Therefore, the main purpose of the utility model is to provide a kind of electrocatalysis coupling electric fenton's phenolic wastewater treatment device, to solve the problem that the existing phenolic wastewater treatment equipment cannot effectively fuse electrocatalysis and electric fenton technology to treat phenolic wastewater.

[0006] To achieve the above object, the basic idea of the technical scheme used by the utility model is:

[0007] A kind of electrocatalysis coupling electric fenton's phenolic wastewater treatment device, including reaction box and external power supply, the reaction box includes matching electrolytic cell cover and electrolytic tank, electrolytic cell is provided in the electrolytic tank, electric fenton and electrocatalysis synergistic unit are provided in the electrolytic cell and are connected with external power supply, and liquid supplementing pipeline and liquid outlet pipeline are also respectively provided on the side wall of the electrolytic tank, the liquid supplementing pipeline and liquid outlet pipeline are all communicated with electrolytic cell;Aeration cavity is provided in the bottom of the electrolytic tank, the aeration cavity is communicated with electrolytic cell by gas supply hole, and the aeration cavity is also communicated with the air pipe arranged on the side wall of electrolytic tank.

[0008] In a preferred embodiment, the electrolytic cell cover is arranged at the upper end opening of the electrolytic tank, and a stirring assembly is also arranged in the electrolytic cell cover and extends into the electrolytic cell.

[0009] In a preferred embodiment, the stirring assembly includes a driving motor and a plurality of stirring rods, the driving motor is connected with external power supply, and a driving gear is provided at the driving end of the driving motor;The stirring rod is rotatably arranged on the electrolytic cell cover, and a plurality of stirring blades are also provided at the end of the stirring rod extending into the electrolytic cell, the tail of the stirring rod is also provided with a driven gear, and the driven gear is engaged with the driving gear.

[0010] In a preferred embodiment, a heating interlayer is also provided in the side wall of the electrolytic tank, and an electric heating wire is wound in the heating interlayer, and the electric heating wire is connected with external power supply.

[0011] In a preferred embodiment, the electric fenton and electrocatalysis synergistic unit includes an anode plate and a cathode plate, the anode plate is connected with the positive electrode of external power supply, and the cathode plate is connected with the negative electrode of external power supply.

[0012] In a preferred embodiment, the upper end of the anode plate and the cathode plate is provided with a threaded connection sleeve, and the threaded connection sleeve is threadedly connected with a threaded rod arranged at the lower end of the inner side of the electrolytic cell cover.

[0013] In a preferred embodiment, the liquid supplementing pipeline is arranged on the bottom side wall of the electrolytic tank, and a first control valve and a liquid supply pump are also provided on the liquid supplementing pipeline.

[0014] In a preferred embodiment, the liquid outlet pipeline is a three-way pipeline installed on the upper side wall of the electrolysis tank, and a liquid outlet pump is installed on the main line of the liquid outlet pipeline, and a second control valve and a third control valve are respectively installed on the two branches of the liquid outlet pipeline.

[0015] In a preferred embodiment, a filter housing is further provided on the output pipeline of the third control valve, and the filter housing is filled with adsorption filter material.

[0016] In a preferred embodiment, an air pump is provided on the ventilation duct.

[0017] Compared with the prior art, this utility model provides an electrocatalytically coupled electro-Fenton device for treating phenol-containing wastewater, which has the following beneficial effects:

[0018] 1. This device, through the setting of an electro-Fenton and electrocatalytic synergistic unit, can utilize cathode and anode plates to carry out electro-Fenton and electrocatalytic synergistic degradation reactions on phenol-containing wastewater, thereby enhancing the treatment effect of synergistic degradation of wastewater and solving the problem that existing phenol-containing wastewater treatment equipment cannot effectively integrate electrocatalysis and electro-Fenton technologies to treat phenol-containing wastewater;

[0019] 2. By setting up threaded connecting sleeves, threaded rods, and stirring rods, the positions of cathode plates and anode plates can be adjusted, and the mass transfer effect of phenol-containing wastewater in the reaction system can be enhanced, thereby improving the synergistic efficiency and effectively completing the treatment of phenol-containing wastewater;

[0020] 3. By using heating wires to heat the phenol-containing wastewater in the electrolytic cell, the mass transfer effect of the phenol-containing wastewater in the reaction system can be effectively enhanced, thus improving the synergistic efficiency.

[0021] 4. By setting up the aeration chamber, air, oxygen, or a mixture of both can be supplied through the upper air supply hole, and the gas flow can be regulated, which effectively promotes the mass transfer effect of wastewater in the reaction system.

[0022] 5. By setting up the adsorption filter packing, phenol in the wastewater can be adsorbed a second time, which improves the treatment efficiency of phenol-containing wastewater.

[0023] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art 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 from these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the structure of the electrocatalytically coupled electro-Fenton device for treating phenol-containing wastewater according to this utility model;

[0026] Figure 2 This is a cross-sectional view of the reaction chamber of this utility model;

[0027] Figure 3 This is a cross-sectional view of the electrolytic cell cover of this utility model;

[0028] Figure 4 This is a sectional view of the present invention.

[0029] Figure 5 This is a top view of the driven gear and the driving gear of this utility model;

[0030] Figure 6 This utility model Figure 2 A magnified view of a section at point A in the middle;

[0031] Figure 7 This utility model Figure 2 A magnified view of a section at point B in the middle;

[0032] Figure 8 This is a schematic diagram of the structure of the electro-Fenton and electrocatalytic synergistic unit of this utility model.

[0033] [Explanation of Key Component Symbols]

[0034] 1. Electrolytic cell cover; 2. First control valve; 3. Liquid outlet pipe; 4. Gas supply port; 5. Liquid supply pump; 6. Drive motor; 7. External power supply; 8. Liquid outlet pump; 9. Second control valve; 10. Third control valve; 11. Electrolytic tank; 12. Air pump; 13. Drive gear; 14. Driven gear; 15. Electro-Fenton and electro-catalytic synergistic unit; 16. Heating jacket; 17. Heating wire; 18. Stirring rod; 19. Liquid replenishment pipe; 20. Aeration chamber; 21. Ventilation pipe; 22. Cathode plate; 23. Anode plate; 24. Threaded connecting sleeve; 25. Threaded rod; 26. Sealing ring; 27. Filter shell; 28. Adsorption filter packing. Detailed Implementation

[0035] The structure of the electrocatalytically coupled electro-Fenton phenol-containing wastewater treatment device will be further described in detail below with reference to the accompanying drawings and embodiments of the present invention.

[0036] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0037] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments as described in this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0038] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented, for example, in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0039] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0040] The following is combined Figures 1 to 8 This invention describes an electrocatalytically coupled electro-Fenton device for treating phenol-containing wastewater.

[0041] An electrocatalytic coupled electro-Fenton device for treating phenolic wastewater is provided for treating phenolic substances in phenolic wastewater by coupling electrocatalysis and electro-Fenton technology. The device includes a reaction chamber and an external power supply 7. The reaction chamber includes an electrolytic cell cover 1 and an electrolytic tank 11 that work together. An electrolytic cell is installed inside the electrolytic tank 11, and an electro-Fenton and electrocatalytic synergistic unit 15 is installed inside the electrolytic tank and connected to the external power supply 7. The unit is also connected to a replenishment pipe 19 and an outlet pipe 3, respectively. The replenishment pipe 19 replenishes the phenolic wastewater into the electrolytic tank, and the electro-Fenton and electrocatalytic synergistic unit 15 performs electro-Fenton and electrocatalytic synergistic degradation treatment on the phenolic wastewater. After treatment, the wastewater is discharged through the outlet pipe 3. An aeration chamber 20 is also provided at the bottom of the electrolytic tank 11 and is connected to the electrolytic cell. The aeration chamber 20 is connected to a ventilation pipe 21 installed on the side wall of the electrolytic tank 11.

[0042] In the above description, the aeration chamber 20 is connected to the electrolytic cell via the upper air supply hole 4, and is used to supply air, oxygen, or a mixture of both to the electrolytic cell, and to regulate the gas flow. This provides oxygen to the system while promoting mass transfer of wastewater within the reaction system. To prevent wastewater from flowing back into the aeration chamber 20, a one-way valve is also installed in the air supply hole 4. In practical use, phenol-containing wastewater is added to the electrolytic cell through the replenishment pipe 19. The electro-Fenton and electrocatalytic synergistic unit 15 performs electro-Fenton and electrocatalytic synergistic degradation treatment on the phenol-containing wastewater, and the treated wastewater is discharged through the outlet pipe 3, completing the electro-Fenton and electrocatalytic synergistic degradation treatment of the phenol-containing wastewater.

[0043] In a preferred embodiment, such as Figure 1 , Figure 2 , Figure 3 and Figure 5 As shown, the electrolytic cell cover 1 tightly covers the upper opening of the electrolytic tank 11 and is connected to the electrolytic tank 11 through a sealing ring 26. A stirring assembly is also provided inside the electrolytic cell cover 1, extending into the electrolytic cell inside the electrolytic tank 11 to stir the phenol-containing wastewater. The stirring assembly includes a drive motor 6 and several stirring rods 18. The drive motor 6 is connected to an external power supply 7, which supplies power to the drive motor 6. A drive gear 13 is provided at the drive end of the drive motor 6. The stirring rods 18 are rotatably mounted on the electrolytic cell cover 1 through bearings. Several stirring blades are also provided at the end of the stirring rods 18 that extend into the electrolytic cell to stir the phenol-containing wastewater. A driven gear 14 is also fixedly provided at the tail of the stirring rods 18, and the driven gear 14 meshes with the drive gear 13.

[0044] In the above description, the drive motor 6 can drive the stirring rod 18 to rotate under the drive of the external power supply 7. The rotation of the stirring rod 18 can stir the phenol-containing wastewater in the electrolytic cell, which can effectively enhance the mass transfer effect of the phenol-containing wastewater in the reaction system and improve the synergistic efficiency.

[0045] In a preferred embodiment, such as Figure 1 , Figure 2 and Figure 4 As shown, a heating jacket 16 is also provided inside the side wall of the electrolysis tank 11. A heating wire 17 is wound inside the heating jacket 16. The heating wire 17 is connected to an external power supply 7 and is powered by the external power supply 7.

[0046] In the above description, heating the phenol-containing wastewater in the electrolytic cell by the heating wire 17 can effectively enhance the mass transfer effect of the phenol-containing wastewater in the reaction system and improve the synergistic efficiency.

[0047] In a preferred embodiment, such as Figure 1 , Figure 2 , Figure 3 and Figure 8 As shown, the electro-Fenton and electrocatalytic synergistic unit 15 includes an anode plate 23 and a cathode plate 22. The anode plate 23 is connected to the positive terminal of the external power supply 7, and the cathode plate 22 is connected to the cathode of the external power supply 7. Both the anode plate 23 and the cathode plate 22 are provided with threaded connecting sleeves 24 at their upper ends. The threaded connecting sleeves 24 are threadedly connected to a threaded rod 25 located at the lower end of the inner side of the electrolytic cell cover 1.

[0048] In the above description, the anode plate 23 and the cathode plate 22 work together to carry out a synergistic degradation reaction of electro-Fenton and electrocatalysis. At the same time, by adjusting the threaded connection between the threaded sleeve 24 and the threaded rod 25, the height and position of the anode plate 23 and the cathode plate 22 in the electrolysis tank 11 can also be adjusted to facilitate the treatment of phenol-containing wastewater.

[0049] The anode plate 23 employs titanium-based ruthenium-iridium electrodes, titanium-based iridium-tantalum electrodes, titanium-based lead dioxide electrodes, and titanium-based tin-antimony electrodes, etc.; the cathode plate 22 employs a nitrogen-doped porous carbon electrode. During the electrocatalytic process, the strong oxidizing substances (such as hydroxyl radicals) directly oxidized and indirectly generated on the electrode surface can act together with the hydroxyl radicals generated by the electro-Fenton reaction on the phenol-containing wastewater, resulting in a more thorough oxidative degradation of phenolic substances. For example, the intermediate products generated by electrocatalytic oxidation may be more easily further oxidized by the hydroxyl radicals in the electro-Fenton system.

[0050] Electrocatalysis can promote the cycling of ferric and ferrous iron in the electro-Fenton reaction. Ferric iron produced by electrocatalytic anodic oxidation participates in the electro-Fenton reaction to generate ferric iron. On the cathode surface, ferric iron can be reduced again by electrocatalytic reduction to generate ferrous iron, allowing the electro-Fenton reaction to proceed continuously and improving the utilization efficiency of Fenton reagent.

[0051] In a preferred embodiment, such as Figure 1 andFigure 2 As shown, the replenishment pipeline 19 is installed on the bottom side wall of the electrolysis tank 11, and a first control valve 2 and a liquid supply pump 5 are also installed on the replenishment pipeline 19. During use, the opening and closing of the replenishment pipeline 19 is controlled by the first control valve 2, and the liquid supply power is provided by the liquid supply pump 5.

[0052] In a preferred embodiment, such as Figure 1 and Figure 2 As shown, the outlet pipeline 3 is a three-way pipeline installed on the upper side wall of the electrolysis tank 11. An outlet pump 8 is installed on the main pipeline of the outlet pipeline 3, and a second control valve 9 and a third control valve 10 are respectively installed on the two branches of the outlet pipeline 3. A filter shell 27 is also installed on the output end pipeline of the third control valve 10. The filter shell 27 is filled with adsorption filter media 28. The adsorption filter media 28 is composed of coal gasification slag (a granular material obtained by repeatedly washing coal gasification waste slag with deionized water, filtering and drying, which can be used as an adsorbent to adsorb phenol in phenol-containing wastewater) which is filled in the filter shell 27 with the limit effect of the filter screen. It has the functions of water permeability and filtration. In use, the two branches of the outlet pipeline 3 can be controlled by the second control valve 9 and the third control valve 10. At the same time, the treated wastewater is subjected to secondary adsorption treatment by the adsorption filter media 28.

[0053] In a preferred embodiment, such as Figure 1 and Figure 2 As shown, the ventilation pipe 21 is also equipped with an air pump 12, which is used to increase the pressure by the air pump 12, and to introduce air, oxygen or a mixture of the two into the aeration chamber 20, and to regulate the airflow.

[0054] The operation process and operating principle of the electrocatalytic coupled electro-Fenton phenol-containing wastewater treatment device of this utility model include: First, phenol-containing wastewater is introduced into the electrolytic cell of the electrolysis tank 11 through the replenishment pipeline 19. Then, the electro-Fenton and electrocatalytic synergistic unit 15 is used to perform electro-Fenton and electrocatalytic synergistic degradation treatment on the phenol-containing wastewater. During the treatment process, the heating temperature of the heating wire 17, the type and rate of gas introduced into the aeration chamber 20, and the rotation speed of the stirring rod 18 are controlled to control the rate of electro-Fenton and electrocatalytic synergistic degradation of the phenol-containing wastewater. After the electro-Fenton and electrocatalytic synergistic degradation of the phenol-containing wastewater is completed, it is discharged from the electrolysis tank 11 through the liquid outlet pipeline 3.

[0055] It should be noted that the liquid supply pump 5, drive motor 6, external power supply 7, liquid outlet pump 8, heating wire 17, cathode plate 22, anode plate 23, etc. mentioned above are all devices with relatively mature existing technology. The specific models can be selected according to actual needs, and will not be elaborated here.

[0056] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the scope of protection of the present utility model.

Claims

1. A phenol-containing wastewater treatment device with electrocatalytic coupling to an electro-Fenton converter, comprising a reaction chamber and an external power supply (7), characterized in that: The reaction chamber includes a matching electrolytic cell cover (1) and an electrolytic tank (11). An electrolytic cell is provided inside the electrolytic tank (11). An electro-Fenton and electrocatalytic synergistic unit (15) is provided inside the electrolytic cell and connected to an external power source (7). A liquid replenishment pipe (19) and a liquid outlet pipe (3) are also provided on the side wall of the electrolytic tank (11). Both the liquid replenishment pipe (19) and the liquid outlet pipe (3) are connected to the electrolytic cell. An aeration chamber (20) is provided at the bottom of the electrolytic tank (11). The aeration chamber (20) is connected to the electrolytic cell through an air supply hole (4). The aeration chamber (20) is also connected to a ventilation pipe (21) provided on the side wall of the electrolytic tank (11).

2. The electrocatalytically coupled electro-Fenton electro-particle phenol-containing wastewater treatment device as described in claim 1, characterized in that: The electrolytic cell cover (1) is located at the upper opening of the electrolytic tank (11), and a stirring assembly is also provided inside the electrolytic cell cover (1) extending into the electrolytic cell.

3. The electrocatalytically coupled electro-Fenton electro-particle phenol-containing wastewater treatment device as described in claim 2, characterized in that: The stirring assembly includes a drive motor (6) and several stirring rods (18). The drive motor (6) is connected to an external power source (7), and a drive gear (13) is provided at the drive end of the drive motor (6). The stirring rods (18) are rotatably mounted on the electrolytic cell cover (1), and several stirring blades are provided at one end of the stirring rods (18) extending into the electrolytic cell. A driven gear (14) is also provided at the tail of the stirring rods (18), and the driven gear (14) meshes with the drive gear (13).

4. The electrocatalytically coupled electro-Fenton electro-particle phenol-containing wastewater treatment device as described in claim 1, characterized in that: The side wall of the electrolysis tank (11) is also provided with a heating jacket (16), and an electric heating wire (17) is wound inside the heating jacket (16). The electric heating wire (17) is connected to an external power source (7).

5. The electrocatalytically coupled electro-Fenton electro-phenolic wastewater treatment device as described in claim 1, characterized in that: The electro-Fenton and electrocatalytic synergistic unit (15) includes an anode plate (23) and a cathode plate (22). The anode plate (23) is connected to the positive terminal of an external power source (7), and the cathode plate (22) is connected to the cathode of the external power source (7).

6. The electrocatalytically coupled electro-Fenton electro-particle phenol-containing wastewater treatment device as described in claim 5, characterized in that: Both the anode plate (23) and the cathode plate (22) are provided with threaded connecting sleeves (24) at their upper ends, and the threaded connecting sleeves (24) are threadedly connected to the threaded rod (25) located at the lower end of the inner side of the electrolytic cell cover (1).

7. The electrocatalytically coupled electro-Fenton electro-particle phenol-containing wastewater treatment device as described in claim 1, characterized in that: The replenishment pipeline (19) is located on the bottom side wall of the electrolysis tank (11), and a first control valve (2) and a liquid supply pump (5) are also provided on the replenishment pipeline (19).

8. The electrocatalytically coupled electro-Fenton electro-particle phenol-containing wastewater treatment device as described in claim 1, characterized in that: The liquid outlet pipeline (3) is a three-way pipeline installed on the upper side wall of the electrolysis tank (11), and a liquid outlet pump (8) is installed on the main line of the liquid outlet pipeline (3), and a second control valve (9) and a third control valve (10) are installed on the two branches of the liquid outlet pipeline (3).

9. The electrocatalytically coupled electro-Fenton electro-particle wastewater treatment device as described in claim 8, characterized in that: A filter housing (27) is also provided on the output end pipeline of the third control valve (10), and the filter housing (27) is filled with adsorption filter material (28).

10. The electrocatalytically coupled electro-Fenton electro-particle phenol-containing wastewater treatment device as described in claim 1, characterized in that: An air pump (12) is installed on the ventilation pipe (21).

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