Magnetic Fenton catalyst reaction device and control method thereof

Abstract

The invention relates to a magnetic Fenton catalyst reaction device and a control method thereof. The magnetic Fenton catalyst reaction device comprises a reaction chamber, an electromagnet assembly and a lifting assembly, the electromagnet assembly is arranged in the reaction chamber and comprises a stirring unit arranged in the middle and an electromagnetic unit arranged at the bottom of the stirring unit; and the lifting assembly is used for wholly or partially lifting the electromagnet assembly. According to the device, the powdery magnetic heterogeneous Fenton catalyst can be accurately separated from a heterogeneous Fenton system, and can be quickly and directly desorbed and returned to the heterogeneous Fenton reaction system after being separated, so that the particle structure of the catalyst is reserved, and the cyclic utilization efficiency is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of sewage treatment, and in particular relates to a magnetic Fenton catalyst reaction device and a control method thereof. Background Art

[0002] In the process of sewage treatment, powdered magnetic heterogeneous Fenton catalysts are often used to achieve catalytic reactions within a wide pH range and temperature range to efficiently degrade a variety of organic pollutants in sewage. However, powdered magnetic heterogeneous Fenton catalysts will produce sludge during actual application. Once the magnetic catalyst and sludge are evenly mixed, it is very difficult to separate the catalyst from the sludge. Usually, the powdered magnetic heterogeneous catalyst is recovered using a magnetic collector outside the Fenton reaction vessel, and then the recovered powdered magnetic heterogeneous Fenton catalyst is re-added to the reactor. The resulting catalyst contamination problem greatly increases the complexity of the process; in addition, during the recovery process, the catalyst will be broken and its integrity will be destroyed due to the need to use external force.

[0003] Therefore, how to provide a reaction device that can accurately separate the powdered magnetic heterogeneous Fenton catalyst from the multiphase Fenton system, and then quickly and directly desorb it after separation and return it to the multiphase Fenton reaction system, while retaining the catalyst particle structure and improving the recycling efficiency, is a technical problem that needs to be urgently solved in this field. Summary of the invention

[0004] In order to solve at least one of the above technical problems, the present invention provides a magnetic Fenton catalyst reaction device, comprising: a reaction chamber, an electromagnet assembly and a lifting assembly;

[0005] The electromagnet assembly is arranged in the reaction chamber, and comprises: a stirring unit arranged in the middle, and an electromagnetic unit arranged at the bottom of the stirring unit;

[0006] Lifting assemblies are used to raise or lower the electromagnet assembly in whole or in part.

[0007] Further, the electromagnetic unit comprises: a transverse electromagnetic member and a longitudinal electromagnetic member;

[0008] A transverse electromagnetic member is horizontally arranged at the bottom of the stirring unit;

[0009] The longitudinal electromagnetic component is vertically arranged upward on the transverse electromagnetic component.

[0010] Furthermore, a guide portion which is inclined downward inward is provided at the bottom of the reaction chamber;

[0011] The transverse electromagnetic member is arranged parallel to the inner surface of the guide portion.

[0012] Further, the reaction chamber is cylindrical, and a conical guide portion is provided at the bottom;

[0013] The transverse electromagnetic member is arranged parallel to the conical surface of the guide portion.

[0014] Furthermore, the stirring unit includes: a stirring shaft arranged in the middle and a driver connected to the stirring shaft.

[0015] Furthermore, a sedimentation groove is provided at the bottom center of the guide portion;

[0016] The electromagnetic unit also includes: an end electromagnetic component arranged at the bottom of the stirring shaft, and the end electromagnetic component extends into the sedimentation tank.

[0017] Furthermore, a mud discharge pipe is provided at the bottom of the sedimentation tank.

[0018] Further, the lifting assembly includes: a pull rod and a handle arranged on the top of the reaction chamber;

[0019] A pull rod, one end of which is connected to the handle, and the other end of which is connected to the electromagnet assembly.

[0020] Furthermore, a telescopic cavity is provided inside the stirring shaft;

[0021] The side wall of the telescopic cavity is provided with a recovery port;

[0022] A pull rod is arranged in the telescopic cavity and connected to the end electromagnetic component;

[0023] The terminal electromagnetic component is telescopically arranged in the telescopic cavity through a pull rod.

[0024] On the other hand, the present invention also provides a control method for a magnetic Fenton catalyst reaction device, using any of the above magnetic Fenton catalyst reaction devices, comprising the following steps:

[0025] Fenton water and hydrogen peroxide flow into the magnetic Fenton reaction device;

[0026] The stirring unit stirs to evenly stir the powdered magnetic Fenton catalyst, Fenton influent water and hydrogen peroxide;

[0027] After the Fenton reaction is completed, the electromagnetic unit is started, and the stirring unit slows down and stirs to adsorb the magnetic Fenton catalyst in the reaction chamber;

[0028] After the preset adsorption time, the lifting assembly rises from the first state to the second state, driving the entire electromagnet assembly to rise, the electromagnetic unit is closed, and the magnetic Fenton catalyst adsorbed on the electromagnetic unit is released;

[0029] The lifting assembly descends and returns to the first state, while driving the entire electromagnet assembly to descend and return to the initial position. In this embodiment, a magnetic Fenton catalyst reaction device is provided. When in use, Fenton influent and hydrogen peroxide flow into the reaction chamber of the magnetic Fenton catalyst reaction device, the stirring unit is started, and the stirring unit arranged in the middle begins to stir. Hydrogen peroxide generates hydroxyl radicals under the catalytic action of the powdered magnetic heterogeneous Fenton catalyst, and reacts with organic matter in the influent to achieve the purpose of sewage treatment. After the Fenton reaction process is completed, the electromagnetic unit is started, and the stirring unit is slowed down to stir; at this time, the lifting assembly is in the first state, close to the bottom of the reaction chamber, the electromagnetic unit is turned on, and the magnetic heterogeneous Fenton catalyst in the reaction chamber is adsorbed; after the preset adsorption time, the lifting assembly rises from the first state to the second state, the electromagnet assembly is closed, and the powdered magnetic heterogeneous Fenton catalyst falls off; under the flow of Fenton influent and hydrogen peroxide, the powdered magnetic heterogeneous Fenton catalyst returns to the multiphase Fenton system; finally, the lifting assembly returns to the first state, and the first electromagnetic unit returns to the initial state close to the bottom of the reaction chamber. The magnetic Fenton catalyst reaction device achieves precise separation of the powdered magnetic heterogeneous Fenton catalyst from the multiphase Fenton system by lifting and lowering the lifting component and starting and stopping the electromagnetic component; when the Fenton reaction is needed again, the above process is repeated to allow the catalyst to be quickly and directly desorbed and returned to the multiphase Fenton reaction system, and then the above Fenton reaction process is repeated to start a new round of reaction cycle. Since the powdered magnetic heterogeneous Fenton catalyst can be recycled and reused by using the electromagnetic properties of the electromagnet, and the recycling and reaction processes are all in the reaction chamber, no external force is required, the particle structure of the catalyst will not be destroyed, and there is no need to put the catalyst back into the reaction chamber, which greatly improves the recycling efficiency of the catalyst.

[0030] In summary, the present application provides a magnetic Fenton catalyst reaction device and a control method thereof, which can accurately separate the powdered magnetic heterogeneous Fenton catalyst from the multiphase Fenton system, and after separation, it can be quickly and directly desorbed and returned to the multiphase Fenton reaction system, thereby retaining the catalyst particle structure and improving the recycling efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following briefly introduces the drawings required for use in the embodiments or the prior art descriptions. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without creative work. In the drawings, the same parts are marked with the same reference numerals. The drawings are not drawn according to the actual scale.

[0032] Figure 1A schematic diagram of an embodiment of a magnetic Fenton catalyst reaction device of the present invention;

[0033] Figure 2 It is an internal top view of an embodiment of a magnetic Fenton catalyst reaction device of the present invention. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] It should be noted that when an element is referred to as being "fixed on" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element at the same time. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or there may be an intermediate element at the same time.

[0036] It should also be noted that if the embodiments of the present invention involve directional indications, such as up, down, left, right, front, back, etc., then the directional indication is only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly. In addition, if the embodiments of the present invention involve descriptions of "first, second", "S1, S2", "step one, step two", etc., then such descriptions are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of indicated technical features or indicating the execution order of the method, etc. Those skilled in the art can understand that anything that does not violate the gist of the invention under the technical concept of the invention should be included in the protection scope of the present invention.

[0037] The present invention provides a magnetic Fenton catalyst reaction device, referring to Figure 1 and Figure 2 , comprising: a reaction chamber 1, an electromagnet assembly 2 and a lifting assembly 3;

[0038] The electromagnet assembly 2 is arranged in the reaction chamber, and includes: a stirring unit 21 arranged in the middle, and an electromagnetic unit 22 arranged at the bottom of the stirring unit;

[0039] The lifting assembly 3 is used to lift the electromagnet assembly 2 in whole or in part.

[0040] In this embodiment, a magnetic Fenton catalyst reaction device is provided. When in use, Fenton influent and hydrogen peroxide flow into the reaction chamber of the magnetic Fenton catalyst reaction device, the stirring unit is started, and the stirring unit arranged in the middle begins to stir. Hydroxyl radicals are generated under the catalytic action of the powdered magnetic heterogeneous Fenton catalyst, and react with organic matter in the influent to achieve the purpose of sewage treatment. After the Fenton reaction process is completed, the electromagnetic unit is started, and the stirring unit slows down the stirring; at this time, the lifting component is in the first state, close to the bottom of the reaction chamber, the electromagnetic unit is turned on, and the magnetic heterogeneous Fenton catalyst in the reaction chamber is adsorbed; after the preset adsorption time, the lifting component rises from the first state to the second state, the electromagnetic component is closed, and the powdered magnetic heterogeneous Fenton catalyst falls off; under the flow of Fenton influent and hydrogen peroxide, the powdered magnetic heterogeneous Fenton catalyst returns to the multiphase Fenton system; finally, the lifting component returns to the first state, and the first electromagnetic unit returns to the initial state close to the bottom of the reaction chamber. The magnetic Fenton catalyst reaction device realizes the precise separation of the powdered magnetic heterogeneous Fenton catalyst from the multiphase Fenton system by the lifting movement of the lifting component, combined with the start and stop of the electromagnetic component; when the Fenton reaction is needed again, the above process is repeated, so that the catalyst is quickly and directly desorbed and returned to the multiphase Fenton reaction system, and then the above Fenton reaction process is repeated to start a new round of reaction cycle. Since the powdered magnetic heterogeneous Fenton catalyst is recycled and reused by utilizing the electromagnetic properties of the electromagnet, and the recycling and reaction processes are all in the reaction chamber, no external force is required, the particle structure of the catalyst will not be destroyed, and the catalyst does not need to be put back into the reaction chamber, which greatly improves the recycling efficiency of the catalyst. In summary, the present application provides a magnetic Fenton catalyst reaction device that can accurately separate the powdered magnetic heterogeneous Fenton catalyst from the multiphase Fenton system, and can quickly and directly desorb after separation and return to the multiphase Fenton reaction system, retaining the catalyst particle structure and improving the recycling efficiency.

[0041] Preferably, reference Figure 1 , the electromagnetic unit 22 comprises: a transverse electromagnetic member 22a and a longitudinal electromagnetic member 22b;

[0042] The transverse electromagnetic member 22a is horizontally arranged at the bottom of the stirring unit 21;

[0043] The longitudinal electromagnetic member 22b is vertically arranged on the transverse electromagnetic member 22a.

[0044] In this embodiment, the transverse electromagnetic element is used to adsorb and separate the magnetic catalyst deposited at the bottom of the reaction chamber and mixed with the solid sludge; while the longitudinal electromagnetic element is used to separate the magnetic catalyst in the liquid phase in the reaction chamber. The combined design of the transverse electromagnetic element and the longitudinal electromagnetic element significantly enhances the adsorption and recovery efficiency of the magnetic catalyst by providing a multi-dimensional magnetic field. Specifically, the number of transverse electromagnetic elements is 12, which are evenly distributed at the bottom of the stirring unit; each transverse electromagnetic element is evenly arranged with 9 longitudinal electromagnetic elements to ensure that there is no dead angle in the reaction chamber, greatly improving the separation effect of the magnetic catalyst.

[0045] Preferably, a guide portion is provided at the bottom of the reaction chamber, which is inclined downward; and a transverse electromagnetic member is provided parallel to the inner surface of the guide portion. More preferably, taking a circle as an example, refer to Figure 1 , the reaction chamber 1 is cylindrical, and a conical guide portion 11 is provided at the bottom;

[0046] The transverse electromagnetic member 22 a is disposed parallel to the conical surface of the guide portion 11 .

[0047] In this embodiment, the reaction chamber is cylindrical, and a conical guide portion is added at the bottom. The large-particle magnetic heterogeneous Fenton catalyst is not captured by the longitudinal electromagnetic component, so that after the large-particle powdered magnetic heterogeneous Fenton catalyst is mixed with the sludge, the mixture is deposited on the conical surface at the bottom under the action of gravity and the aggregation of the conical surface; the transverse electromagnetic component is arranged parallel to the conical surface of the guide portion, and can fully adsorb the magnetic heterogeneous Fenton catalyst particles on the bottom conical surface under the rotation of the stirring unit, and through the dual effects of physical guidance and magnetic adsorption, the powdered magnetic catalyst is efficiently separated and recovered; and the sludge is deposited on the bottom conical surface, and can be subsequently removed manually or extracted by a sludge extraction device.

[0048] Preferably, reference Figure 1 The stirring unit 21 includes a stirring shaft 21b arranged in the middle and a driver 21a connected to the stirring shaft.

[0049] In this embodiment, the stirring unit is powered by a driver, so that the stirring produces a continuous rotational motion. On the one hand, the powdered magnetic heterogeneous Fenton catalyst is fully contacted with the organic pollutants in the sewage to avoid the phenomenon of excessive or low concentration of local reactants, and ensure that the Fenton reaction is carried out uniformly and quickly in the entire reaction chamber; on the other hand, when separating the powdered magnetic heterogeneous Fenton catalyst from the multiphase Fenton system, the magnetic adsorption of the catalyst can be accelerated to assist the magnetic separation of the catalyst and improve the recycling efficiency of the catalyst. For example, the driver 21a is a speed regulating motor. During the Fenton reaction process, the speed regulating motor drives the stirring shaft to rotate at a speed of 200 to 600 revolutions per minute to increase the Fenton reaction rate; in the magnetic separation stage, the speed regulating motor drives the stirring shaft to rotate at a speed of 10 to 100 revolutions per minute to improve the magnetic separation efficiency.

[0050] More preferably, refer to Figure 1 , a sedimentation groove 12 is provided at the bottom center of the guide portion 11;

[0051] The electromagnet assembly 2 further includes: an end electromagnet 23 disposed at the bottom of the stirring shaft 21 b , and the end electromagnet 23 extends into the sedimentation tank 12 .

[0052] In this embodiment, a sedimentation tank is added at the bottom center of the guide part, and non-magnetic sludge and a small amount of unseparated magnetic heterogeneous Fenton catalyst will gather and flow into the sedimentation tank in the center along the conical surface of the guide part, and the terminal electromagnetic part extends into the groove to separate a small amount of unseparated magnetic heterogeneous Fenton catalyst by magnetic adsorption. Preferably, the terminal electromagnetic part is a strong magnetic unit with higher magnetic properties than the electromagnetic unit, and a large amount of magnetic heterogeneous Fenton catalyst gathered in the sedimentation tank is concentratedly recovered through strong magnetism to avoid its loss during the mud discharge process. It can be understood that the longitudinal electromagnetic part completes the first stage of separation and recovery of the magnetic heterogeneous Fenton catalyst in the reaction chamber; the transverse electromagnetic part then completes the second stage of separation and recovery of the magnetic heterogeneous Fenton catalyst on the guide part; finally, the terminal electromagnetic part completes the third stage of separation and recovery of the magnetic heterogeneous Fenton catalyst in the sedimentation tank; through the three-stage separation and recovery, the recovery and reuse rate of the magnetic heterogeneous Fenton catalyst is greatly improved.

[0053] More preferably, a sludge discharge pipe is provided at the bottom of the sedimentation tank 12, so that the magnetic catalyst is adsorbed on the electromagnetic component for recovery and treatment; under the action of gravity, the sludge is guided through the conical surface and discharged through the sludge pipe, achieving a better separation effect.

[0054] More preferably, the inclination angle of the conical surface of the guide portion 11 is 20° to 60°; on the one hand, the sludge deposited at the bottom can slide naturally and concentrate into the sedimentation tank under the action of gravity, avoiding the sludge staying on the inclined surface due to the inclination angle being too small; on the other hand, it avoids the magnetic catalyst and the sludge sliding too fast, and the contact time between the magnetic catalyst and the magnetic field of the electromagnetic unit is insufficient, resulting in incomplete adsorption and reduced recovery efficiency.

[0055] More preferably, the lifting assembly 3 comprises: a pull rod and a handle arranged on the top of the reaction chamber;

[0056] A pull rod, one end of which is connected to the handle, and the other end of which is connected to the electromagnet assembly.

[0057] In this embodiment, the lifting assembly adjusts the upper and lower positions of the electromagnet assembly in the reaction chamber by pulling the handle up and down. After the magnetic catalyst completes the adsorption and separation, the lifting assembly lifts the terminal electromagnetic component into the reaction chamber, closes the electromagnetic unit and the terminal electromagnetic component, and allows the magnetic catalyst to re-enter the reaction chamber, achieving effective desorption of the magnetic catalyst and achieving a better separation effect.

[0058] Optionally, a telescopic cavity is provided inside the stirring shaft 21b;

[0059] The side wall of the telescopic cavity is provided with a recovery port; the pull rod is arranged in the telescopic cavity and connected to the end electromagnetic component;

[0060] The terminal electromagnetic component 23 is telescopically arranged in the telescopic cavity through a pull rod.

[0061] In this embodiment, the terminal electromagnetic part can be telescopically arranged in the telescopic cavity, and can perform telescopic movement along the axial direction of the telescopic cavity through the pull rod. When it is necessary to recover the magnetic catalyst in the sedimentation tank, the terminal electromagnetic part extends to complete the adsorption and separation of the magnetic catalyst in the sedimentation tank; after the magnetic catalyst completes the adsorption and separation, the terminal electromagnetic part retracts into the telescopic cavity, and when the Fenton reaction is needed again, it is only necessary to close the terminal electromagnetic part, and the Fenton water inlet passes through the recovery port set on the side wall of the telescopic cavity to flush away the magnetic catalyst adsorbed on the terminal electromagnetic part, so that the catalyst is quickly and directly desorbed and returned to the multi-phase Fenton reaction system. Since the lifting component only needs to partially lift or lower the electromagnet component through the pull rod, that is, pull the terminal electromagnetic part to perform telescopic movement, the adsorption, separation and recycling of the magnetic catalyst in the sedimentation tank can be realized, and there is no need to lift or lower the electromagnet component as a whole, which greatly reduces the energy consumption and structural strength requirements of the lifting component.

[0062] A control method for a magnetic Fenton catalyst reaction device, using any one of the above magnetic Fenton catalyst reaction devices, comprises the following steps:

[0063] Fenton water and hydrogen peroxide flow into the magnetic Fenton reaction device;

[0064] The stirring unit 21 stirs to evenly stir the powdered magnetic Fenton catalyst, Fenton influent water and hydrogen peroxide;

[0065] After the Fenton reaction is completed, the electromagnetic unit 22 is started, and the stirring unit 21 is stirred at a reduced speed to adsorb the magnetic Fenton catalyst in the reaction chamber 1;

[0066] After the preset adsorption time, the lifting assembly 3 rises from the first state to the second state, driving the electromagnet assembly 2 to rise as a whole, and the electromagnetic unit 22 is closed, releasing the magnetic Fenton catalyst adsorbed on the electromagnetic unit 22;

[0067] The lifting assembly 3 descends and returns to the first state, and at the same time drives the electromagnet assembly 2 to descend as a whole and return to the initial position.

[0068] In this embodiment, a control method for the recovery of a magnetic catalyst is provided. In combination with the magnetic Fenton catalyst reaction device described above, the synergistic effect of electromagnetic control and stirring unit is utilized to achieve efficient recovery and utilization of the magnetic Fenton catalyst. Since each step of the entire recovery method is completed inside the reaction chamber, the loss and secondary pollution of the magnetic Fenton catalyst are avoided, the integrated operation of the reaction and separation process is achieved, and the recovery efficiency of the magnetic Fenton catalyst and the stability of the reaction system are greatly improved. It is worth noting that the preset adsorption time can be arbitrarily set by those skilled in the art as needed to meet the actual reaction needs.

[0069] More preferably, the control method of the magnetic Fenton catalyst reaction device further includes: after the Fenton reaction is completed, the electromagnetic unit 22 is started, and the longitudinal electromagnetic part 22b of the electromagnetic unit 22 adsorbs the magnetic Fenton catalyst in the reaction chamber 1 to complete the first-level adsorption; the transverse electromagnetic part 22a of the electromagnetic unit 22 adsorbs the magnetic Fenton catalyst deposited on the bottom conical surface of the reaction chamber 1 to complete the second-level adsorption; the terminal electromagnetic part 23 is started and adsorbs the magnetic Fenton catalyst deposited in the sedimentation tank 12 to complete the third-level adsorption. Since the magnetic Fenton catalyst will first be suspended in the reaction chamber during the Fenton reaction, and then will settle to the bottom slope under the action of gravity, and finally will naturally slide on the bottom slope and concentrate in the sedimentation tank; the magnetic Fenton catalyst suspended in the reaction chamber, deposited on the bottom slope and enriched in the sedimentation tank is adsorbed and separated step by step by the longitudinal electromagnetic part, the transverse electromagnetic part and the terminal electromagnetic part, respectively, to achieve multi-stage adsorption and separation of the magnetic Fenton catalyst, which greatly improves the recovery rate of the magnetic Fenton catalyst.

[0070] More preferably, the control method of the magnetic Fenton catalyst reaction device includes: after the preset deposition adsorption time, the lifting component 3 rises from the first state to the second state, and only the end electromagnetic part 23 is pulled up by the handle and the pull rod; the electromagnetic unit 22 and the end electromagnetic part 23 are closed, and the magnetic catalyst adsorbed on the electromagnetic unit 22 is directly released to the reaction chamber 1, and the magnetic Fenton catalyst adsorbed on the end electromagnetic part 23 is released from the recovery port to the reaction chamber 1; the lifting component 3 descends and returns to the first state, and at the same time drives the end electromagnetic part 23 back to the initial position in the deposition tank 12. Since the lifting component only acts on the end electromagnetic part, rather than the entire electromagnetic component, there is no need to lift or lower the electromagnetic iron component as a whole, which greatly reduces the energy consumption and structural strength requirements of the lifting component. The control method of the magnetic Fenton catalyst reaction device is created based on the magnetic Fenton catalyst reaction device, and its technical effects and technical features are not repeated here. The above-mentioned embodiments only express several implementation methods of the present invention, and their descriptions are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for those skilled in the art, several modifications and improvements can be made without departing from the concept of the present invention, which all fall within the protection scope of the present invention.

Claims

1. A magnetic Fenton catalyst reaction device, characterized in that: include: reaction chamber, electromagnet assembly and lifting assembly; The electromagnet assembly is arranged in the reaction chamber, and comprises: a stirring unit arranged in the middle, and an electromagnetic unit arranged at the bottom of the stirring unit; Lifting assemblies are used to raise or lower the electromagnet assembly in whole or in part.

2. The magnetic Fenton catalyst reaction device according to claim 1, characterized in that: The electromagnetic unit comprises: a transverse electromagnetic component and a longitudinal electromagnetic component; A transverse electromagnetic member is horizontally arranged at the bottom of the stirring unit; The longitudinal electromagnetic component is vertically arranged upward on the transverse electromagnetic component.

3. The magnetic Fenton catalyst reaction device according to claim 2, characterized in that: A guide portion slanting downward is provided at the bottom of the reaction chamber; The transverse electromagnetic member is arranged parallel to the inner surface of the guide portion.

4. The magnetic Fenton catalyst reaction device according to claim 3, characterized in that: The reaction chamber is cylindrical, and a conical guide portion is provided at the bottom; The transverse electromagnetic member is arranged parallel to the conical surface of the guide portion.

5. The magnetic Fenton catalyst reaction device according to claim 4, characterized in that: The stirring unit comprises a stirring shaft arranged in the middle and a driver connected to the stirring shaft.

6. The magnetic Fenton catalyst reaction device according to claim 5, characterized in that: A sedimentation trough is provided at the bottom center of the guide portion; The electromagnetic unit also includes: an end electromagnetic component arranged at the bottom of the stirring shaft, and the end electromagnetic component extends into the sedimentation tank.

7. The magnetic Fenton catalyst reaction device according to claim 6, characterized in that: A mud discharge pipe is arranged at the bottom of the sedimentation tank.

8. The magnetic Fenton catalyst reaction device according to claim 6, characterized in that: A lifting assembly, comprising: a pull rod and a handle arranged on the top of the reaction chamber; A pull rod, one end of which is connected to the handle, and the other end of which is connected to the electromagnet assembly.

9. The magnetic Fenton catalyst reaction device according to claim 8, characterized in that: A telescopic cavity is provided inside the stirring shaft; The side wall of the telescopic cavity is provided with a recovery port; A pull rod is arranged in the telescopic cavity and connected to the end electromagnetic component; The end electromagnetic component is telescopically arranged in the telescopic cavity through a pull rod.

10. A control method for a magnetic Fenton catalyst reaction device, using the magnetic Fenton catalyst reaction device according to any one of claims 1 to 9, characterized in that: The following steps are involved: Fenton water and hydrogen peroxide flow into the magnetic Fenton reaction device; The stirring unit stirs to evenly stir the powdered magnetic Fenton catalyst, Fenton influent water and hydrogen peroxide; After the Fenton reaction is completed, the electromagnetic unit is started, and the stirring unit is stirred at a reduced speed to adsorb the magnetic Fenton catalyst in the reaction chamber; After the preset adsorption time, the lifting assembly rises from the first state to the second state, driving the entire electromagnet assembly to rise, the electromagnetic unit is closed, and the magnetic Fenton catalyst adsorbed on the electromagnetic unit is released; The lifting assembly descends and returns to the first state, and at the same time drives the entire electromagnet assembly to descend back to the initial position.

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