Electrochemical activation reactor for phenolic wastewater treatment

Abstract

The utility model discloses an electrochemical activation reactor for phenol-containing wastewater treatment belongs to wastewater treatment technical field, the existing electrochemical reactor thread type anode and thread type cathode interval adjustment are more difficult, make electrode polarization phenomenon difficult to avoid, influence electrochemical reaction to carry out's problem, the reactor includes reactor main part, adjustable electrode reaction mechanism, the reactor main part includes activation reaction tank, and adjustable reaction mechanism includes the retractable anode assembly and movable cathode assembly, and movable cathode assembly includes electrode support frame, support guide seat, electrode mounting seat, movable cathode part, interval adjustment part and angle adjustment part, in the utility model, the setting of movable cathode assembly has realized the flexible adjustment of retractable anode assembly and movable cathode assembly interval, thereby makes the distribution of electric current even between electrode, guarantees the mass transfer efficiency and substance transmission balance of wastewater in activation reaction tank, avoids electrode polarization phenomenon.

Description

Technical Field

[0001] This utility model belongs to the field of wastewater treatment technology, specifically relating to an electrochemical activation reactor for treating phenol-containing wastewater. Background Technology

[0002] Phenolic wastewater is a common type of industrial wastewater, mainly originating from industries such as petrochemicals, coking, pharmaceuticals, and dyes. Phenolic compounds are characterized by high toxicity and poor biodegradability, posing serious threats to the environment and human health. Therefore, developing efficient, economical, and environmentally friendly phenolic wastewater treatment technologies is of significant practical importance.

[0003] Currently, the main methods for treating phenol-containing wastewater include physical, chemical, and biological methods. Physical methods, such as adsorption and extraction, can effectively remove phenolic substances, but they suffer from problems such as difficult adsorbent regeneration and high extraction solvent recovery costs. Chemical methods, such as oxidation-reduction and the Fenton process, while achieving good treatment results, often require the addition of large amounts of chemical reagents, increasing treatment costs and generating secondary pollution. Biological methods utilize the metabolic activity of microorganisms to degrade phenolic substances, offering advantages such as low cost and no secondary pollution. However, due to the high toxicity of phenol-containing wastewater and the limited tolerance of microorganisms, the treatment effect is often unsatisfactory.

[0004] In recent years, electrochemical technology has received widespread attention in the field of phenol-containing wastewater treatment. Electrochemical technology can effectively degrade phenolic substances by generating strong oxidizing substances through electrode reactions. Currently, the mainstream electrochemical reactors mainly include two-dimensional electrode reactors and fluidized bed electrode reactors. However, when existing two-dimensional electrode reactors treat different types of phenol-containing wastewater, the composition, concentration, pH and other properties of the phenol-containing wastewater vary greatly, and the requirements for electrode spacing are also different. Reactors with non-adjustable electrode spacing can only adapt to wastewater with specific properties and have poor versatility.

[0005] In our research and development of phenol-containing wastewater treatment technology, we applied the "An Electrochemical Reactor for Increasing the Probability of Contact Between Organic Pollutants and Electrodes" disclosed in Chinese Patent CN222293719U. This electrochemical reactor includes a shell, a connecting cover plate, an anode terminal, and a cathode terminal. The connecting cover plate is threadedly connected to the shell with bolts. An inlet pipe is fixedly connected to the bottom of the shell, and an outlet pipe is fixedly connected to the side wall of the shell. The anode terminal is fixedly connected to the top of the connecting cover plate, and the cathode terminal is fixedly connected to the side wall of the shell. In contrast, existing electrochemical reactors (the electrochemical reactor disclosed in Chinese Patent CN222293719U) use a threaded fixed structure for the anode and cathode, severely restricting the relative positions of the two electrodes. The fixed electrode spacing cannot be flexibly adjusted according to the characteristics of the phenol-containing wastewater being treated (such as compositional complexity, phenol concentration gradient, pH differences, etc.). This problem directly leads to a key issue in the electrochemical reaction process: However, in practical engineering applications, we have found that this fixed electrode structure has significant technical limitations. Due to the significant differences in the physicochemical properties of different types of phenol-containing wastewater, the fixed electrode spacing is difficult to adapt to the optimal current distribution requirements under all operating conditions. This non-uniformity of current distribution further leads to severe electrode polarization—the electrode surface in the overly dense region experiences a sharp increase in charge transfer resistance due to continuous high current impact, resulting in reduced electrode activity; while the electrode in the underactive region is in an inefficiently activated state due to insufficient current, leading to an overall imbalance in reaction kinetics. Polarization not only significantly reduces the efficiency of electrochemical reactions but also accelerates structural damage to electrode materials, drastically shortens electrode lifespan, and increases reactor maintenance costs and downtime frequency. Therefore, the fixed arrangement of threaded anodes and cathodes in existing electrochemical reactors makes spacing adjustment difficult, hindering uniform current distribution between electrodes. This results in over-reaction in some areas and under-reaction in others, making electrode polarization unavoidable and further impacting the electrochemical reaction, reducing efficiency and electrode lifespan. To address these issues, we propose an electrochemical activation reactor for phenol-containing wastewater treatment, aiming to overcome the shortcomings of existing technologies and improve the efficiency and stability of electrochemical reactions. Utility Model Content

[0006] The purpose of this invention is to address the shortcomings of existing technologies by providing an electrochemical activation reactor for the treatment of phenol-containing wastewater. This invention solves the problem that existing electrochemical reactors use fixed spiral anodes and spiral cathodes, making it difficult to adjust the spacing between them. This results in uneven current distribution between the electrodes, leading to over-reaction in some areas and under-reaction in others. Consequently, electrode polarization is difficult to avoid, further affecting the electrochemical reaction, reducing reaction efficiency, and shortening electrode lifespan.

[0007] This invention is achieved by an electrochemical activation reactor for treating phenol-containing wastewater, comprising: The reactor body includes an activation reaction tank, a water injection pipe on one side of the activation reaction tank, a drainage tank on the other side, and a DC pulse power supply installed at the front of the activation reaction tank. An adjustable electrode reaction mechanism is electrically connected to the DC pulse power supply. The adjustable electrode reaction mechanism is installed in the activation reaction tank. The adjustable reaction mechanism includes a retractable anode assembly and a movable cathode assembly. The movable cathode assembly includes an electrode support frame, a support guide seat, an electrode mounting seat, a movable cathode part, a spacing adjustment part, and an angle adjustment part. The support guide seat is fixedly installed in the activation reaction tank. The angle adjustment part and the movable cathode part are installed in the electrode mounting seat. The electrode mounting seat is fixedly installed in the electrode support frame. The spacing adjustment part is installed in the activation reaction tank and is connected to the motor support frame.

[0008] Preferably, the spacing adjustment unit includes: The first screw is rotatably installed inside the anti-corrosion sleeve, which is fixedly installed on the top of the activation reaction tank. One end of the first screw is fixedly installed with a first rotating wheel, and the other end of the first screw extends into the internal threaded sleeve. The first screw and the internal threaded sleeve are connected by threads. An internally threaded sleeve is slidably installed inside a corrosion-resistant sleeve, and one end of the internally threaded sleeve is detachably connected to the electrode support.

[0009] Preferably, the angle adjustment unit includes: The second screw is rotatably mounted on the electrode support, and a second wheel is fixedly mounted on one end of the second screw. An internal threaded seat is threaded onto the outer wall of the second screw, and the internal threaded seat is slidably connected to the electrode support frame. A translation gear seat is fixedly installed at the bottom of an internal thread seat, and at least one set of linkage gears is provided on one side of the translation gear seat; The linkage gear is rotatably mounted in the electrode mounting base, and meshes with the translation gear seat for transmission. The linkage gear is also connected to the movable cathode part.

[0010] Preferably, the active cathode portion includes: A movable cathode plate, which is fixedly connected to a linkage gear; At least one set of auxiliary contact grooves is provided within the movable cathode plate.

[0011] Preferably, the retractable anode assembly includes: The anode section can be retracted and installed within the electrical limit seat; An electrical limit seat is used to support the retractable anode portion and to limit and guide the retractable anode portion. The support stand is fixedly installed inside the activation reaction tank. A servo motor is fixedly installed on the support stand. The output end of the servo motor is connected to the retractable linkage unit, which is connected to the retractable anode part.

[0012] Preferably, the retraction and extension linkage includes: A linkage turntable is rotatably mounted in an electric limit seat, and a servo motor is fixedly connected to one side of the linkage turntable. The driven turntable is located at the end of the electric limit seat, and the driven turntable and the linkage turntable are rotatably connected by a corrosion-resistant pull rope; The retractable slide is slidably installed in the electric limit position seat and is fixedly connected to the corrosion-resistant pull rope.

[0013] Preferably, the retractable anode comprises: The auxiliary working anode is detachably installed in the electrical limit seat; The main working anode works in conjunction with the auxiliary working anode, and the main working anode is fixedly connected to the retractable slide.

[0014] At least one set of electrode turbulence tanks are provided inside the main working anode and the auxiliary working anode for turbulence treatment of the incoming wastewater; At least one set of working anode plates, wherein the working anode plates are embedded in the main working anode and the auxiliary working anode.

[0015] Compared with the prior art, the embodiments of this application have the following main advantages: In this embodiment of the invention, a movable cathode assembly is provided. The movable cathode assembly consists of an electrode support frame, a support guide seat, an electrode mounting seat, a movable cathode part, a spacing adjustment part, and an angle adjustment part. The movable cathode assembly enables flexible adjustment of the distance between the retractable anode assembly and the movable cathode assembly, thereby ensuring uniform current distribution between the electrodes, guaranteeing the mass transfer efficiency and material transport balance of the wastewater in the activation reaction tank, and avoiding electrode polarization. Furthermore, the angle adjustment part allows for adjustment of the angle of the movable cathode part, thereby changing the electric field distribution and making the electric field direction more compatible with the flow direction of the wastewater and the distribution of pollutants. This allows the electric field energy to act more concentratedly on phenolic substances, improving the utilization efficiency of the electric field. It can also change the flow direction and velocity of the wastewater, ensuring sufficient contact between the wastewater and the electrode surface in the reactor, avoiding product accumulation that inhibits the reaction, and thus improving the removal rate of phenols.

[0016] In this embodiment of the invention, a retractable anode assembly is provided. The retractable anode assembly consists of a retractable anode part, a servo motor, a retraction linkage part, and an electric limit seat. The retractable anode part, servo motor, retraction linkage part, and electric limit seat work together to adjust the contact area between the retractable anode part and the wastewater, thereby meeting the treatment requirements of different types of phenol-containing wastewater. At the same time, the linkage between the servo motor, retraction linkage part, and electric limit seat facilitates the retraction and deployment of the retractable anode part, avoids the retractable anode part occupying the wastewater flow space, and improves the mass transfer efficiency of the wastewater in the activation reaction tank.

[0017] In this embodiment of the utility model, a retraction linkage unit is provided, which consists of a linkage turntable, a driven turntable, and a retraction slide. The linkage turntable, the driven turntable, and the retraction slide work together to achieve flexible adjustment of the retractable anode electrolysis area, thereby meeting the treatment requirements of phenol-containing wastewater of different concentrations and types.

[0018] In this embodiment of the invention, the main working anode and the auxiliary working anode are electrically connected to the pulse power supply. The main working anode and the auxiliary working anode can be rectangular or circular base structures, while the working anode plate can be a Ti / SnO2-Sb2O3 coated porous electrode plate / plate structure. The electrode turbulence groove is set to achieve turbulence "cutting" of the wastewater, which helps to break the dynamic balance of liquid flow in the activation reaction tank, thereby improving the wastewater treatment efficiency and quality. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of the electrochemical activation reactor for treating phenol-containing wastewater provided by this utility model.

[0020] Figure 2 This is a three-dimensional structural schematic diagram of the electrochemical activation reactor for treating phenol-containing wastewater provided by this utility model.

[0021] Figure 3 This is a top view of the electrochemical activation reactor for treating phenol-containing wastewater provided by this utility model.

[0022] Figure 4 yes Figure 3 A sectional view along line AA.

[0023] Figure 5 This is a schematic diagram of the structure of the movable cathode assembly provided by this utility model.

[0024] Figure 6 This is an isometric view of the movable cathode assembly provided by this utility model.

[0025] Figure 7 This is a top view of the movable cathode assembly provided by this utility model.

[0026] Figure 8 This is a structural schematic diagram of the retractable anode assembly provided by this utility model.

[0027] Figure 9 This is an isometric view of the retractable anode assembly provided by this utility model.

[0028] Figure 10 This is a side view of the retractable anode assembly provided by this utility model.

[0029] In the diagram: 1-Reactor body, 11-Activation reaction tank, 111-Water injection pipe, 112-Drainage tank, 12-Top cover plate, 13-DC pulse power supply, 2-Retractable anode assembly, 21-Servo motor, 22-Supporting stand, 23-Retractable anode section, 231-Secondary working anode, 232-Main working anode, 233-Electrode turbulence groove, 234-Working anode plate, 24-Electrical limit seat, 25-Retraction linkage unit, 251-Linkage turntable, 252-Driven turntable, 253-Corrosion-resistant pull rope. 254-Retractable slide, 3-Modible cathode assembly, 31-Electrode support bracket, 32-Gap adjustment section, 321-First rotating wheel, 322-First screw, 323-Anti-corrosion sleeve, 324-Internal threaded sleeve, 33-Angle adjustment section, 331-Second rotating wheel, 332-Second screw, 333-Internal threaded seat, 334-Transfer gear seat, 335-Linkage gear, 34-Support guide seat, 35-Electrode mounting seat, 36-Modible cathode section, 361-Auxiliary contact groove, 362-Modible cathode plate. Detailed Implementation

[0030] 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 herein in the specification of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "comprising" and "having," and any variations thereof, in the specification, claims, and foregoing drawings of this application are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the specification, claims, or foregoing drawings of this application are used to distinguish different objects, not to describe a particular order.

[0031] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0032] Existing electrochemical reactors use fixed threaded anodes and cathodes, making spacing adjustment difficult. This results in uneven current distribution between electrodes, leading to over-reaction in some areas and under-reaction in others. This makes electrode polarization unavoidable, further affecting the electrochemical reaction, reducing reaction efficiency, and shortening electrode lifespan. To address these issues, we propose an electrochemical activation reactor for treating phenol-containing wastewater. In short, the electrochemical activation reactor for treating phenol-containing wastewater consists of a reactor body 1 and an adjustable electrode reaction mechanism. The reactor body 1 includes an activation reaction tank 11. The adjustable reaction mechanism includes a retractable anode assembly 2 and a movable cathode assembly 3. The movable cathode assembly 3 consists of an electrode support frame 31, a support guide seat 34, an electrode mounting seat 35, a movable cathode section 36, a spacing adjustment section 32, and an angle adjustment section 33. During operation, the phenol-containing wastewater to be treated flows into the activation reaction tank 11 through the water injection pipe 111. Then, the retractable anode assembly 2 and the movable cathode assembly 3 are turned on. Simultaneously, when it is necessary to adjust the distance between the retractable anode assembly 2 and the movable cathode assembly 3 to accommodate differences in the composition, concentration, and pH of different types of phenol-containing wastewater, thereby ensuring mass transfer efficiency and material transport balance, the distance adjustment unit 32 is activated. The distance adjustment unit 32 drives the electrode support frame 31, the electrode mounting base 35, and the movable cathode part 36 to move along the support guide seat 34, thereby achieving adjustment of the distance between the retractable anode assembly 2 and the movable cathode assembly 3. The distance can be flexibly adjusted. When it is necessary to adjust the angle of the movable cathode 36, the angle adjustment unit 33 is activated. The angle adjustment unit 33 can drive multiple sets of movable cathodes 36 to rotate, thereby adjusting the angle of the movable cathode 36 and changing the electric field distribution. This makes the electric field direction more compatible with the flow direction of wastewater and the distribution of pollutants, allowing the electric field energy to act more concentratedly on phenolic substances, improving the utilization efficiency of the electric field. It can also change the flow direction and velocity of wastewater, allowing the wastewater to fully contact the reactor and electrode surface, avoiding the inhibition of reaction by product accumulation, thereby improving the removal rate of phenols.In this embodiment of the invention, a movable cathode assembly 3 is provided. The movable cathode assembly 3 consists of an electrode support frame 31, a support guide seat 34, an electrode mounting seat 35, a movable cathode part 36, a spacing adjustment part 32, and an angle adjustment part 33. The movable cathode assembly 3 enables flexible adjustment of the spacing between the retractable anode assembly 2 and the movable cathode assembly 3, thereby ensuring uniform current distribution between the electrodes, guaranteeing the mass transfer efficiency and material transport balance of the wastewater in the activation reaction tank 11, and avoiding electrode polarization. Furthermore, the angle adjustment part 33 enables adjustment of the angle of the movable cathode part 36, thereby changing the electric field distribution, making the electric field direction more compatible with the flow direction of the wastewater and the distribution of pollutants, so that the electric field energy acts more concentratedly on phenolic substances, improving the utilization efficiency of the electric field, and also changing the flow direction and velocity of the wastewater, so that the wastewater can fully contact the reactor and the electrode surface, avoiding the inhibition of the reaction by product accumulation, thereby improving the removal rate of phenols.

[0033] This utility model provides an electrochemical activation reactor for treating phenol-containing wastewater, such as... Figures 1-4 As shown, the electrochemical activation reactor for treating phenol-containing wastewater specifically includes: The reactor body 1 includes an activation reaction tank 11. A water injection pipe 111 is provided on one side of the activation reaction tank 11, and a drainage tank 112 is provided on the other side. A DC pulse power supply 13 is installed on the front side of the activation reaction tank 11. At the same time, a top cover plate 12 is detachably installed on the top of the activation reaction tank 11. The top cover plate 12 is used to prevent the escape of wastewater and waste gas. Its sealing and installation methods are existing technologies and will not be described in detail here. In this embodiment, the phenol-containing wastewater includes, but is not limited to, petrochemical wastewater, coal chemical wastewater, electroplating wastewater and coking wastewater. The activation reaction tank 11 is a hollow rectangular tank. The activation reaction tank 11 is made of corrosion-resistant PP or FRP material. A wastewater drainage pipe is connected to the outside of the water injection pipe 111. The DC pulse power supply 13 is installed on the outer wall of the activation reaction tank 11 by snap-fit ​​or bolt installation. The voltage, current and pulse frequency of the DC pulse power supply 13 are adjustable. An adjustable electrode reaction mechanism is electrically connected to the DC pulse power supply 13. The adjustable electrode reaction mechanism is installed in the activation reaction tank 11. The adjustable reaction mechanism includes a retractable anode assembly 2 and a movable cathode assembly 3. The movable cathode assembly 3 includes an electrode support frame 31, a support guide seat 34, an electrode mounting seat 35, a movable cathode part 36, a spacing adjustment part 32, and an angle adjustment part 33. The support guide seat 34 is fixedly installed in the activation reaction tank 11. The angle adjustment part 33 and the movable cathode part 36 are installed in the electrode mounting seat 35. The electrode mounting seat 35 is fixedly installed in the electrode support frame 31. The spacing adjustment part 32 is installed in the activation reaction tank 11 and is connected to the motor support frame.

[0034] In this embodiment, the support guide seat 34 is a hollow rectangular seat, and the support guide seat 34 is fixedly installed in the activation reaction tank 11 by tenon or snap-fit. The electrode support frame 31 can be a hollow rectangular seat or a "T" shaped seat structure. The electrode mounting seat 35 is installed in the electrode support frame 31 by plug-in or snap-fit.

[0035] In this embodiment of the invention, a movable cathode assembly 3 is provided. The movable cathode assembly 3 consists of an electrode support frame 31, a support guide seat 34, an electrode mounting seat 35, a movable cathode part 36, a spacing adjustment part 32, and an angle adjustment part 33. The movable cathode assembly 3 enables flexible adjustment of the spacing between the retractable anode assembly 2 and the movable cathode assembly 3, thereby ensuring uniform current distribution between the electrodes, guaranteeing the mass transfer efficiency and material transport balance of the wastewater in the activation reaction tank 11, and avoiding electrode polarization. Furthermore, the angle adjustment part 33 enables adjustment of the angle of the movable cathode part 36, thereby changing the electric field distribution, making the electric field direction more compatible with the flow direction of the wastewater and the distribution of pollutants, so that the electric field energy acts more concentratedly on phenolic substances, improving the utilization efficiency of the electric field, and also changing the flow direction and velocity of the wastewater, so that the wastewater can fully contact the reactor and the electrode surface, avoiding the inhibition of the reaction by product accumulation, thereby improving the removal rate of phenols.

[0036] In a further preferred embodiment of this utility model, such as Figures 5-7 As shown, the spacing adjustment unit 32 includes: The first screw 322 is rotatably installed inside the anti-corrosion sleeve 323, which is fixedly installed on the top of the activation reaction tank 11. One end of the first screw 322 is fixedly installed with a first rotating wheel 321, and the other end of the first screw 322 extends into the internal threaded sleeve 324. The first screw 322 and the internal threaded sleeve 324 are connected by threads. It should be noted that the surfaces of the first screw 322 and the internal threaded sleeve 324 are coated with an anti-corrosion layer to avoid corrosion or damage caused by long-term operation. The end of the first screw 322 is fixedly connected to the first rotating wheel 321 by plugging, while the anti-corrosion sleeve 323 is installed on the top of the activation reaction tank 11 by snap-fit ​​or bolt connection.

[0037] The internally threaded sleeve 324 is slidably installed inside the anti-corrosion sleeve 323, and one end of the internally threaded sleeve 324 is detachably connected to the electrode support bracket 31.

[0038] In this embodiment, the internal threaded sleeve 324 is connected to the electrode support 31 by a plug-in or snap-fit ​​method.

[0039] When it is necessary to adjust the distance between the movable cathode part 36 and the retractable anode assembly 2, the first rotating wheel 321 can be manually rotated. The first rotating wheel 321 drives the first screw 322 to rotate, thereby causing the first screw 322 to drive the internal threaded sleeve 324 to move along the anti-corrosion sleeve 323, thereby realizing the movement of the electrode support 31, the electrode mounting seat 35, and the movable cathode part 36, and realizing the flexible adjustment of the distance between the movable cathode part 36 and the retractable anode assembly 2.

[0040] It should be noted that a suitable electrode plate angle helps enhance the mass exchange between wastewater and the electrode. When the electrode plate angle changes, the residence time and flow state of the wastewater on the electrode surface also change, which is beneficial for the adsorption of phenolic substances and the desorption of reaction products on the electrode surface. In a further preferred embodiment of this invention, such as... Figures 5-6 As shown, the angle adjustment unit 33 includes: The second screw 332 is rotatably mounted on the electrode support 31, and a second rotating wheel 331 is fixedly mounted on one end of the second screw 332. The internal thread seat 333 is threadedly sleeved on the outer wall of the second screw 332, and the internal thread seat 333 is slidably connected to the electrode support bracket 31. The translation gear seat 334 is fixedly installed at the bottom of the internal thread seat 333, and at least one set of linkage gears 335 is provided on one side of the translation gear seat 334; The linkage gear 335 is rotatably mounted in the electrode mounting base 35, and the linkage gear 335 meshes with the translation gear base 334 for transmission. The linkage gear 335 is also connected to the movable cathode part 36.

[0041] In this embodiment, the second screw 332 is rotatably connected to the electrode support frame 31 via a bearing. One end of the second screw 332 is fixedly connected to the second rotating wheel 331 by insertion or riveting. At the same time, the second rotating wheel 331 can also be connected to a drive motor to realize automatic driving of the second rotating wheel 331 and the second screw 332. The internal thread seat 333 is engaged or riveted with the translational gear seat 334. The linkage gear 335 is rotatably connected to the electrode mounting seat 35 via a bearing.

[0042] During operation, rotating the second rotating wheel 331 drives the second screw 332 to rotate, which in turn causes the second screw 332 to rotate. The second screw 332 then drives the internal thread seat 333 to translate along the electrode support frame 31. The internal thread seat 333 drives the translational gear seat 334 to move, which in turn drives the linkage gear 335 to rotate. The rotation of the linkage gear 335, in turn, drives the movable cathode part 36 to rotate, thus achieving adjustment of the angle of the movable cathode part 36. For high-concentration phenol-containing wastewater, adjusting the angle of the electrode plates can enhance mass transfer and electric field effects, thereby improving the treatment effect. For wastewater containing a large amount of suspended solids, a suitable angle can prevent the deposition of suspended solids on the electrode surface, ensuring the normal operation of the reactor.

[0043] In this embodiment, the active cathode portion 36 includes: The movable cathode plate 362 is fixedly connected to the linkage gear 335 and electrically connected to the pulse power supply. At least one set of auxiliary contact grooves 361 are provided within the movable cathode plate 362.

[0044] It should be noted that the movable cathode plate 362 can be a stainless steel plate or a titanium alloy plate, and the auxiliary contact groove 361 can be a rectangular groove, a circular groove or a "V" shaped groove. The auxiliary contact groove 361 is designed to increase the contact area between the movable cathode plate 362 and the wastewater.

[0045] In a further preferred embodiment of this utility model, such as Figures 8-10 As shown, the retractable anode assembly 2 includes: The retractable anode part 23 is disposed within the electric limit seat 24; The electric limit seat 24 is used to support the retractable anode part 23 and limit and guide the retractable anode part 23. The electric limit seat 24 is a rectangular seat with a hollow groove inside, and the electric limit seat 24 is fixedly connected to the supporting stand 22 by fastening bolts or welding. The hollow groove can be an "L" groove structure, which facilitates the retraction and placement of the retractable anode part 23. A support stand 22 is fixedly installed inside the activation reaction tank 11. A servo motor 21 is fixedly installed on the support stand 22. The output end of the servo motor 21 is connected to a retractable linkage part 25. The retractable linkage part 25 is connected to a retractable anode part 23. The servo motor 21 is electrically connected to a pulse power supply. The servo motor 21 is fixedly installed on the support stand 22 by welding or riveting. A waterproof cover is fitted on the outer wall of the servo motor 21.

[0046] In this embodiment of the invention, a retractable anode assembly 2 is provided. The retractable anode assembly 2 consists of a retractable anode part 23, a servo motor 21, a retraction linkage part 25, and an electric limit seat 24. The retractable anode part 23, the servo motor 21, the retraction linkage part 25, and the electric limit seat 24 work together to adjust the contact area between the retractable anode part 23 and the wastewater, thereby meeting the treatment requirements of different types of phenol-containing wastewater. At the same time, the linkage between the servo motor 21, the retraction linkage part 25, and the electric limit seat 24 facilitates the retraction and deployment of the retractable anode part 23, avoids the retractable anode part 23 occupying the wastewater flow space, and improves the mass transfer efficiency of the wastewater in the activation reaction tank 11.

[0047] In a further preferred embodiment of this utility model, such as Figures 8-9 As shown, the retraction and extension linkage 25 includes: A linkage turntable 251 is rotatably mounted in an electric limit seat 24, and a servo motor 21 is fixedly connected to one side of the linkage turntable 251. The driven turntable 252 is located at the end of the electric limit seat 24, and the driven turntable 252 and the linkage turntable 251 are rotatably connected by a corrosion-resistant pull rope 253. The linkage turntable 251 and the driven turntable 252 are rotatably connected to the electric limit seat 24 by bearings or rollers, and the corrosion-resistant pull rope 253 can be a stainless steel pull rope or a polyethylene fiber rope. The retractable slide 254 is slidably installed in the electric limit seat 24 and is fixedly connected to the corrosion-resistant pull rope 253. The retractable slide 254 can be a rectangular seat or a "T" shaped seat structure. In this embodiment, a retractable linkage unit 25 is provided, which consists of a linkage turntable 251, a driven turntable 252, and a retractable slide 254. The linkage turntable 251, the driven turntable 252, and the retractable slide 254 work together to flexibly adjust the retractable anode electrolysis area, thereby meeting the treatment requirements of phenol-containing wastewater of different concentrations and types. In operation, the servo motor 21 starts, driving the linkage turntable 251 to rotate within the electric limit seat 24. Since the linkage turntable 251 and the driven turntable 252 are rotatably connected via a corrosion-resistant pull rope 253, the rotation of the linkage turntable 251 moves the corrosion-resistant pull rope 253, which is then fixedly connected to the retractable slide 254, causing the retractable slide 254 to slide within the electric limit seat 24. By controlling the rotation direction and angle of the servo motor 21, the position of the retractable slide 254 can be precisely controlled, thereby achieving flexible adjustment of the retractable anode electrolysis area. This adjustment method is not only simple to operate but also highly precise, effectively adapting to the treatment needs of phenol-containing wastewater of different concentrations and types, thus improving the treatment efficiency and effectiveness of the electrochemical activation reactor for phenol-containing wastewater.

[0048] In a further preferred embodiment of this utility model, such as Figure 8 and Figure 10 As shown, the retractable anode includes: The auxiliary working anode 231 is detachably installed in the electric limit seat 24, and the auxiliary working electrode is detachably connected to the electric limit seat 24 by means of snap-fit ​​or plug-in. The main working anode 232 works in conjunction with the auxiliary working anode 231, and the main working anode 232 is fixedly connected to the retractable slide 254.

[0049] At least one set of electrode turbulence grooves 233 are provided in the main working anode 232 and the auxiliary working anode 231 for turbulence treatment of the incoming wastewater; At least one set of working anode plates 234, wherein the working anode plates 234 are embedded in the main working anode 232 and the auxiliary working anode 231.

[0050] In this embodiment, the main working anode 232 and the auxiliary working anode 231 are electrically connected to the pulse power supply. The main working anode 232 and the auxiliary working anode 231 can be rectangular or circular base structures, while the working anode plate 234 can be a Ti / SnO2-Sb2O3 coated porous electrode plate / plate structure. The electrode turbulence groove 233 achieves turbulence "cutting" of the wastewater, which helps to break the dynamic balance of liquid flow in the activation reaction tank 11, thereby improving the wastewater treatment efficiency and quality. This embodiment of the invention can utilize chloride ions in wastewater to generate ClO through anode discharge. - The technical principle is to improve the electrode material (Ti / SnO2-Sb2O3 coated porous electrode sheet / plate structure) and reactor structure, thereby increasing the chloride ion conversion rate to over 70% while controlling the generation of by-products, creating favorable conditions for subsequent biochemical treatment.

[0051] In summary, this utility model provides an electrochemical activation reactor for treating phenol-containing wastewater. In this embodiment, a movable cathode assembly 3 is provided, which consists of an electrode support frame 31, a support guide seat 34, an electrode mounting seat 35, a movable cathode part 36, a spacing adjustment part 32, and an angle adjustment part 33. The movable cathode assembly 3 enables flexible adjustment of the distance between the retractable anode assembly 2 and the movable cathode assembly 3, thereby ensuring uniform current distribution between the electrodes, guaranteeing the mass transfer efficiency and material transport balance of the wastewater in the activation reaction tank 11, and avoiding electrode polarization. Furthermore, the angle adjustment part 33 enables adjustment of the angle of the movable cathode part 36, thereby changing the electric field distribution, making the electric field direction more compatible with the flow direction of the wastewater and the distribution of pollutants, so that the electric field energy acts more concentratedly on the phenolic substances, improving the utilization efficiency of the electric field, and also changing the flow direction and velocity of the wastewater, so that the wastewater can fully contact the reactor and electrode surfaces, avoiding the inhibition of the reaction by product accumulation, thereby improving the removal rate of phenols.

[0052] It should be noted that, for the sake of simplicity, the foregoing embodiments are all described as a series of actions. However, those skilled in the art should understand that the present invention is not limited to the described order of actions, as some steps may be performed in other orders or simultaneously according to the present invention. Furthermore, those skilled in the art should also understand that the embodiments described in the specification are preferred embodiments, and the actions and modules involved are not necessarily essential to the present invention.

[0053] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit the scope of protection of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on these embodiments, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model. Although this utility model has been described in detail with reference to the above embodiments, those skilled in the art can still combine, add, delete, or otherwise adjust the features of the various embodiments of this utility model according to the circumstances without conflict or creative effort, thereby obtaining different technical solutions that do not fundamentally depart from the concept of this utility model. These technical solutions are also within the scope of protection of this utility model.

Claims

1. An electrochemical activation reactor for treating phenol-containing wastewater, comprising: The reactor body includes an activation reaction tank, a water injection pipe on one side of the activation reaction tank, a drainage tank on the other side, and a DC pulse power supply installed at the front of the activation reaction tank. An adjustable electrode reaction mechanism is electrically connected to the DC pulse power supply. The adjustable electrode reaction mechanism is installed in an activation reaction tank and includes a retractable anode assembly and a movable cathode assembly. The movable cathode assembly includes an electrode support frame, a support guide seat, an electrode mounting seat, a movable cathode part, a spacing adjustment part, and an angle adjustment part. The support guide seat is fixedly installed in the activation reaction tank. The angle adjustment part and the movable cathode part are installed in the electrode mounting seat. The electrode mounting seat is fixedly installed in the electrode support frame. The spacing adjustment part is installed in the activation reaction tank and is connected to the motor support frame.

2. The electrochemical activation reactor for treating phenol-containing wastewater as described in claim 1, characterized in that: The spacing adjustment unit includes: The first screw is rotatably installed inside the anti-corrosion sleeve, which is fixedly installed on the top of the activation reaction tank. One end of the first screw is fixedly installed with a first rotating wheel, and the other end of the first screw extends into the internal threaded sleeve. The first screw and the internal threaded sleeve are connected by threads. An internally threaded sleeve is slidably installed inside a corrosion-resistant sleeve, and one end of the internally threaded sleeve is detachably connected to the electrode support.

3. The electrochemical activation reactor for treating phenol-containing wastewater as described in claim 1, characterized in that: The angle adjustment unit includes: The second screw is rotatably mounted on the electrode support, and a second wheel is fixedly mounted on one end of the second screw. An internal threaded seat is threaded onto the outer wall of the second screw, and the internal threaded seat is slidably connected to the electrode support frame. A translation gear seat is fixedly installed at the bottom of an internal thread seat, and at least one set of linkage gears is provided on one side of the translation gear seat; The linkage gear is rotatably mounted in the electrode mounting base, and meshes with the translation gear seat for transmission. The linkage gear is also connected to the movable cathode part.

4. The electrochemical activation reactor for treating phenol-containing wastewater as described in claim 3, characterized in that: The active cathode portion includes: A movable cathode plate, which is fixedly connected to a linkage gear; At least one set of auxiliary contact grooves is provided within the movable cathode plate.

5. The electrochemical activation reactor for treating phenol-containing wastewater as described in any one of claims 2-4, characterized in that: The retractable anode assembly includes: The anode section can be retracted and installed within the electrical limit seat; An electrical limit seat is used to support the retractable anode portion and to limit and guide the retractable anode portion. The support stand is fixedly installed inside the activation reaction tank. A servo motor is fixedly installed on the support stand. The output end of the servo motor is connected to the retractable linkage unit, which is connected to the retractable anode part.

6. The electrochemical activation reactor for treating phenol-containing wastewater as described in claim 5, characterized in that: The retraction and extension linkage includes: A linkage turntable is rotatably mounted in an electric limit seat, and a servo motor is fixedly connected to one side of the linkage turntable. The driven turntable is located at the end of the electric limit seat, and the driven turntable and the linkage turntable are rotatably connected by a corrosion-resistant pull rope; The retractable slide is slidably installed in the electric limit position seat and is fixedly connected to the corrosion-resistant pull rope.

7. The electrochemical activation reactor for treating phenol-containing wastewater as described in claim 6, characterized in that: The retractable anode includes: The auxiliary working anode is detachably installed in the electrical limit seat; The main working anode works in conjunction with the auxiliary working anode, and the main working anode is fixedly connected to the retractable slide.

8. The electrochemical activation reactor for treating phenol-containing wastewater as described in claim 7, characterized in that: The retractable anode also includes: At least one set of electrode turbulence tanks are provided inside the main working anode and the auxiliary working anode for turbulence treatment of the incoming wastewater; At least one set of working anode plates, wherein the working anode plates are embedded in the main working anode and the auxiliary working anode.

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