A device and process for electrocatalytic oxidation treatment of refractory wastewater

Abstract

The invention relates to the technical field of sewage treatment, and in particular to an electrocatalytic oxidation treatment device and process for difficult-to-degrade wastewater; the device comprises a device housing, a power control device, a circulation pump, a first filter assembly, a second filter assembly and an aeration and stirring mechanism, wherein the aeration and stirring mechanism comprises a mounting seat, a driving assembly, a hollow tube, an air pump, an input pipe, a flow divider, a plurality of flow dividers, a stirring rod and a stirring blade; while the wastewater is electrocatalytically oxidized and degraded, the driving assembly is started, the hollow tube is driven to rotate on the mounting seat through a transmission gear, thereby driving the stirring rod to rotate, the stirring blade on the stirring rod is used to stir the wastewater in the device housing, and the wastewater in the device housing is mixed; while the hollow tube rotates, the air pump is started, the airflow is transported to the plurality of flow dividers through the input pipe and the flow divider, and air is transported to the inside of the device housing through a plurality of aeration holes, so that the wastewater in the device housing is mixed more evenly.

Description

Technical Field

[0001] The present invention relates to the technical field of sewage treatment, and in particular to a device and process for electrocatalytic oxidation treatment of difficult-to-degrade wastewater. Background Art

[0002] Refractory organic matter refers to organic matter that is decomposed very slowly and incompletely by microorganisms. Currently, the existing electrocatalytic oxidation devices for treating refractory wastewater are inconvenient to fully mix the internal wastewater, resulting in low efficiency in degrading the wastewater.

[0003] To solve the above problems, the existing public patent (CN216918876U) discloses an electrocatalytic oxidation device for treating difficult-to-degrade wastewater, including a device box, a power supply control device is provided at the top right end of the device box, and an electrode rod is electrically connected to the left end of the power supply control device, and the electrode rod is arranged inside the device box. The electrode rod consists of a positive electrode and a negative electrode. A water inlet is provided at the upper left end of the device box, and a water outlet is provided at the lower left end of the device box. A second filtering device is connected to the outer end of the water outlet, and a rotating shaft rod is provided at the inner bottom end of the device box. A stirring blade is fixedly welded and distributed on the outside of the rotating shaft rod, and the right outer end of the rotating shaft rod passes through the device box and is connected to a motor. The electrocatalytic oxidation device for treating difficult-to-degrade wastewater is convenient for efficiently rotating the stirring device box through the motor control automatic rotation of the stirring device at the bottom end of the device box, so as to facilitate the full mixing of the wastewater and effectively improve the efficiency of degrading the wastewater.

[0004] However, the existing electrocatalytic oxidation device for treating refractory wastewater only stirs the wastewater through the stirring blades arranged on the rotating shaft when mixing the wastewater, and the mixing effect is poor. Summary of the invention

[0005] The purpose of the present invention is to provide an electrocatalytic oxidation treatment device and process for difficult-to-degrade wastewater, so as to solve the problem that the electrocatalytic oxidation device for treating difficult-to-degrade wastewater in the prior art only stirs the wastewater through the stirring blades arranged on the rotating shaft when mixing the wastewater, resulting in poor mixing effect.

[0006] To achieve the above-mentioned purpose, the present invention provides an electrocatalytic oxidation treatment device for refractory wastewater, comprising a device housing, a power control device, a circulation pump, a first filter assembly, a second filter assembly and an aeration stirring mechanism, wherein the power control device is disposed at one end of the top of the device housing, the power control device is electrically connected to an electrode rod, the electrode rod is disposed inside the device housing, a water inlet is disposed above the device housing, a water outlet is disposed at the bottom of the device housing, the outer end of the water outlet is connected to the second filter assembly, the circulation pump is installed on the side of the device housing, the input end of the circulation pump is connected to a circulation water inlet pipe, the output end of the circulation pump is connected to a circulation water outlet pipe, the circulation water inlet pipe and the circulation pipe outlet pipe are both connected to the inside of the device housing, and the first filter assembly is installed on the circulation water inlet pipe and the circulation pipe outlet pipe;

[0007] The aeration and stirring mechanism includes a mounting seat, a driving assembly, a hollow tube, an air pump, an input tube, a flow divider, a plurality of flow dividers, a stirring rod and a stirring blade. The mounting seat is fixedly connected to the device housing and is located outside the device housing. The hollow tube is rotatably connected to the mounting seat, and the hollow tube penetrates into the interior of the device housing. The air pump is also arranged on the outside of the device housing. The output end of the air pump is provided with the input tube, and the input tube is inserted into the interior of the hollow tube. The flow divider is arranged at one end of the hollow tube located inside the device housing. A plurality of diversion pipes are evenly arranged on the outside of the diversion fluid, each of the diversion pipes is provided with a plurality of aeration holes, the plurality of diversion pipes are kept unobstructed with the diversion fluid, the diversion fluid is kept unobstructed with the hollow tube, one end of the stirring rod is detachably connected to the diversion fluid, the other end of the stirring rod is rotatably connected to the inner side wall of the device box, a plurality of stirring blades are evenly arranged on the stirring rod, the driving assembly is also provided on the mounting seat, a transmission gear is also provided on the outside of the hollow tube, and the output end of the driving assembly is mechanically transmitted with the rotating gear.

[0008] Wherein, the driving assembly includes a driving motor, a transmission and an output gear. The driving motor is detachably connected to the mounting base and is located on a side of the mounting base away from the device housing. The transmission is provided at the output end of the driving motor, and the output gear is provided at the output end of the transmission. The output gear is meshed with the transmission gear.

[0009] Among them, each of the diversion pipes includes a first straight pipe portion, a curved pipe portion and a second straight pipe portion, one end of the curved pipe portion is fixedly connected to the first straight pipe portion, the other end of the curved pipe portion is fixedly connected to the second straight pipe portion, the first straight pipe portion is fixedly connected to the diversion body, the second straight pipe portion and the stirring rod are parallel to each other, and the second straight pipe portion is located on the periphery of the stirring blade.

[0010] A rotating bearing is embedded in the interior of one end of the hollow tube away from the flow divider, and one end of the input tube away from the air pump is embedded in the interior of the rotating bearing.

[0011] Among them, the electrocatalytic oxidation treatment device for difficult-to-degrade wastewater also includes a support member, which is arranged at the end of the stirring rod away from the flow divider, and the support member is arranged in a disc structure, and the end of each second straight pipe part away from the curved pipe part passes through the support member.

[0012] Wherein, the support member includes a support ring and a mounting wing ring, the mounting wing ring is fixedly connected to the support ring and is located on one side of the support ring, the support ring and the mounting wing ring are both sleeved on the outside of the stirring rod, and one end of each of the second straight tube portions away from the curved tube portion passes through the support ring, and the mounting wing ring is fixed to the stirring rod by screws.

[0013] The present invention also provides a process for electrocatalytic oxidation treatment of refractory wastewater, which is applied to the above-mentioned refractory wastewater electrocatalytic oxidation treatment device, and the steps are as follows:

[0014] Put a proper amount of wastewater into the inside of the device box through the water inlet, turn on the power control device, supply power to the electrode rod, and use the electrode rod to perform electrocatalytic oxidation and degradation of the wastewater;

[0015] While the wastewater is being electrocatalytically oxidized and degraded, the circulation pump is started, water is introduced through the circulation water inlet pipe, discharged from the circulation water outlet pipe, and filtered and purified through the first filter assembly;

[0016] The driving assembly is started, and the hollow tube is driven to rotate on the mounting seat through the transmission gear. When the hollow tube rotates inside the device box, the stirring rod is driven to rotate, so that the stirring blades on the stirring rod are used to stir the wastewater in the device box, mix the wastewater in the device box, and prevent the wastewater from settling inside the device box;

[0017] While the hollow tube is rotating, the air pump is started to deliver the airflow to the interior of the flow divider through the input pipe, and then deliver the gas to the plurality of flow divider pipes, and deliver the gas to the interior of the device box through the plurality of aeration holes provided on the flow divider pipes;

[0018] After electrocatalytic oxidation, water is discharged through the water outlet, and clean water is discharged after being filtered and purified by the second filter assembly.

[0019] The present invention provides an electrocatalytic oxidation treatment device and process for difficult-to-degrade wastewater. While utilizing the electrode rod to electrocatalytically oxidize and degrade the wastewater, the drive assembly is started, and the hollow tube is driven to rotate on the mounting seat through the transmission gear. When the hollow tube rotates inside the device housing, the stirring rod is driven to rotate, so that the stirring blades on the stirring rod are used to stir and mix the wastewater in the device housing. While the hollow tube rotates, the air pump is started, and the airflow is transported to the interior of the diverter body through the input pipe, and then the gas is transported to the multiple diverter pipes. The gas is transported to the interior of the device housing through the multiple aeration holes provided on the diverter pipes, so that the wastewater in the device housing is mixed more evenly. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 It is a schematic structural diagram of a device for electrocatalytic oxidation treatment of difficult-to-degrade wastewater according to the first embodiment of the present invention.

[0022] Figure 2 The present invention provides Figure 1 A magnified view of the local structure at A.

[0023] Figure 3 It is a schematic diagram of the internal structure of the device box in the first embodiment of the present invention.

[0024] Figure 4 It is a schematic structural diagram of the aeration and stirring mechanism in the first embodiment of the present invention.

[0025] Figure 5 It is a schematic structural diagram of the aeration and stirring mechanism in the second embodiment of the present invention.

[0026] Figure 6It is a schematic structural diagram of a device for electrocatalytic oxidation treatment of difficult-to-degrade wastewater according to the third embodiment of the present invention.

[0027] Figure 7 The present invention provides Figure 6 A magnified view of the local structure at B.

[0028] Figure 8 It is a flow chart of the steps of the electrocatalytic oxidation treatment process for difficult-to-degrade wastewater provided by the present invention.

[0029] 101-device housing, 102-power control device, 103-circulation pump, 104-first filter assembly, 105-second filter assembly, 106-mounting seat, 107-driving assembly, 108-hollow tube, 109-air pump, 110-input pipe, 111-dividing fluid, 112-dividing pipe, 113-stirring rod, 114-stirring blade, 115-driving motor, 116-transmission, 117-output gear, 118- The first straight pipe portion, 119-the bent pipe portion, 120-the second straight pipe portion, 121-the electrode rod, 122-the water inlet, 123-the water outlet, 124-the circulating water inlet pipe, 125-the circulating water outlet pipe, 126-the aeration hole, 127-the transmission gear, 128-the rotating bearing, 201-the support member, 202-the support ring, 203-the mounting wing ring, 301-the protective shell, 302-the first shell, 303-the second shell, 304-the mounting foot. DETAILED DESCRIPTION

[0030] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0031] First embodiment:

[0032] See also Figures 1 to 4 ,in Figure 1 is a schematic structural diagram of a device for electrocatalytic oxidation treatment of refractory wastewater according to a first embodiment, Figure 2 yes Figure 1 A magnified view of the local structure at A. Figure 3 is a schematic diagram of the internal structure of the device box in the first embodiment, Figure 4 It is a schematic structural diagram of the aeration and stirring mechanism in the first embodiment.

[0033] The present invention provides an electrocatalytic oxidation treatment device for refractory wastewater, comprising a device housing 101, a power control device 102, a circulation pump 103, a first filter assembly 104, a second filter assembly 105 and an aeration and stirring mechanism, wherein the aeration and stirring mechanism comprises a mounting seat 106, a drive assembly 107, a hollow tube 108, an air pump 109, an input pipe 110, a flow diverter 111, a plurality of flow diverter pipes 112, a stirring rod 113 and a stirring blade 114, the drive assembly 107 comprises a drive motor 115, a transmission 116 and an output gear 117, and each of the flow diverter pipes 112 comprises a first straight pipe portion 118, a curved pipe portion 119 and a second straight pipe portion 120.

[0034] According to the present specific embodiment, the power control device 102 is provided at one end of the top of the device box 101, and the power control device 102 is electrically connected to the electrode rod 121, and the electrode rod 121 is arranged inside the device box 101, and a water inlet 122 is provided on the top of the device box 101, and a water outlet 123 is provided at the bottom of the device box 101, and the outer end of the water outlet 123 is connected to the second filter assembly 105, and the circulating pump 103 is installed on the side of the device box 101, and the input end of the circulating pump 103 is connected to the circulating water inlet pipe 124, and the output end of the circulating pump 103 is connected to the circulating water outlet pipe 125, and the circulating water inlet pipe 124 and the circulating pipe outlet pipe are both connected through The device is connected to the interior of the device housing 101, and the first filter assembly 104 is installed on the circulating water inlet pipe 124 and the circulating pipe outlet pipe. A proper amount of wastewater is put into the device housing 101 through the water inlet 122, and the power control device 102 is turned on to supply power to the electrode rod 121. The electrode rod 121 is used to electrocatalytically oxidize and degrade the wastewater. While the wastewater is being electrocatalytically oxidized and degraded, the circulation pump 103 is started to let water enter through the circulating water inlet pipe 124 and then be discharged from the circulating water outlet pipe 125. The water is filtered and purified by the first filter assembly 104, and then discharged through the water outlet 123 after electrocatalytic oxidation. The clean water is discharged after being filtered and purified by the second filter assembly 105.

[0035] The mounting seat 106 is fixedly connected to the device housing 101 and is located outside the device housing 101. The mounting seat 106 is rotatably connected to the hollow tube 108, and the hollow tube 108 penetrates into the interior of the device housing 101. The air pump 109 is also arranged outside the device housing 101. The output end of the air pump 109 is provided with the input tube 110, and the input tube 110 is inserted into the interior of the hollow tube 108. The end of the hollow tube 108 located inside the device housing 101 is provided with the flow divider 1 11, a plurality of the diverter pipes 112 are evenly arranged on the outside of the diverter fluid 111, and each of the diverter pipes 112 is provided with a plurality of aeration holes 126, and the plurality of the diverter pipes 112 are kept unobstructed with the diverter fluid 111, and the diverter fluid 111 is kept unobstructed with the hollow tube 108, one end of the stirring rod 113 is detachably connected with the diverter fluid 111, and the other end of the stirring rod 113 is rotatably connected with the inner side wall of the device box 101, and a plurality of the stirring blades 114 are evenly arranged on the stirring rod 113, and the mounting seat 106 is also provided with The driving assembly 107 is provided, and a transmission gear 127 is also provided outside the hollow tube 108. The output end of the driving assembly 107 is mechanically transmitted with the rotating gear. When the electrode rod 121 is used to electrocatalyze and oxidize wastewater, the driving assembly 107 is started, and the hollow tube 108 is driven to rotate on the mounting seat 106 through the transmission gear 127. When the hollow tube 108 rotates inside the device box 101, the stirring rod 113 is driven to rotate, so that the stirring blade 112 on the stirring rod 113 is used to 14 stirs the wastewater in the device box 101 to mix the wastewater in the device box 101 to prevent the wastewater from settling inside the device box 101. While the hollow tube 108 rotates, start the air pump 109 to transport the airflow to the inside of the flow diverter 111 through the input pipe 110, and then transport the gas to the multiple flow diverter pipes 112. Through the multiple aeration holes 126 provided on the flow diverter pipes 112, gas is transported to the inside of the device box 101, so that the wastewater in the device box 101 is mixed more evenly.

[0036] Secondly, the driving motor 115 is detachably connected to the mounting base 106 and is located on a side of the mounting base 106 away from the device housing 101. The output end of the driving motor 115 is provided with the transmission 116, and the output end of the transmission 116 is provided with the output gear 117. The output gear 117 is meshed with the transmission gear 127. After starting the driving motor 115 and adjusting the speed of the driving motor 115 by using the transmission 116, the output gear 117 is driven to rotate. Since the output gear 117 is meshed with the transmission gear 127, the hollow tube 108 is driven to rotate on the mounting base 106.

[0037] At the same time, one end of the curved pipe portion 119 is fixedly connected to the first straight pipe portion 118, and the other end of the curved pipe portion 119 is fixedly connected to the second straight pipe portion 120. The first straight pipe portion 118 is fixedly connected to the flow diverter 111, and the second straight pipe portion 120 is parallel to the stirring rod 113. The second straight pipe portion 120 is located at the periphery of the stirring blade 114. The first straight pipe portion 118 and the second straight pipe portion 120 are both fixedly connected to the curved pipe portion 119. When preparing the diverter pipe 112, an integrated molding technology is adopted.

[0038] In addition, a rotating bearing 128 is embedded in the interior of the end of the hollow tube 108 away from the flow divider 111, and the end of the input tube 110 away from the air pump 109 is embedded in the rotating bearing 128. Since the input tube 110 is embedded in the rotating bearing 128, the input tube 110 will not interfere with the rotation of the hollow tube 108.

[0039] When using the electrocatalytic oxidation treatment device for difficult-to-degrade wastewater of the present embodiment, a proper amount of wastewater is put into the interior of the device housing 101 through the water inlet 122, the power control device 102 is turned on, power is supplied to the electrode rod 121, and the electrode rod 121 is used to electrocatalytically oxidize and degrade the wastewater. While the wastewater is electrocatalytically oxidized and degraded, the circulation pump 103 is started, water is introduced through the circulation water inlet pipe 124, and then discharged from the circulation water outlet pipe 125, and filtered and purified through the first filter component 104. After electrocatalytic oxidation, water is discharged through the water outlet 123, and clean water is discharged after filtering and purification through the second filter component 105. While the wastewater is electrocatalytically oxidized and degraded using the electrode rod 121, the drive component 107 is started, and the transmission gear 127 is used to drive the drive component 107 ... The hollow tube 108 rotates on the mounting seat 106. When the hollow tube 108 rotates inside the device box 101, it drives the stirring rod 113 to rotate, so that the stirring blade 114 on the stirring rod 113 is used to stir the wastewater in the device box 101, mix the wastewater in the device box 101, and prevent the wastewater from settling inside the device box 101. When the hollow tube 108 rotates, the air pump 109 is started, and the air flow is transported to the inside of the diverter 111 through the input pipe 110, and then the gas is transported to the multiple diverter pipes 112. The gas is transported to the inside of the device box 101 through the multiple aeration holes 126 provided on the diverter pipes 112, so that the wastewater in the device box 101 is mixed more evenly.

[0040] Second embodiment:

[0041] Based on the first embodiment, please refer to Figure 5 , Figure 5 It is a schematic structural diagram of the aeration and stirring mechanism in the second embodiment.

[0042] The present invention provides a device for electrocatalytic oxidation treatment of refractory wastewater, which also includes a support member 201 , wherein the support member 201 includes a support ring 202 and a mounting wing ring 203 .

[0043] According to this specific embodiment, the support member 201 is provided at the end of the stirring rod 113 away from the diverter 111. The support member 201 is provided in a disc structure, and the end of each second straight pipe portion 120 away from the curved pipe portion 119 passes through the support member 201. The support member 201 is provided at the end of the stirring rod 113 away from the diverter 111, and the support member 201 is used to support multiple second straight pipe portions 120, so that the diverter pipe 112 has a more stable structure during the rotation process.

[0044] Among them, the mounting wing ring 203 is fixedly connected to the support ring 202 and is located on one side of the support ring 202. The support ring 202 and the mounting wing ring 203 are both sleeved on the outside of the stirring rod 113, and one end of each of the second straight tube portions 120 away from the curved tube portion 119 passes through the support ring 202. The mounting wing ring 203 is fixed to the stirring rod 113 by screws. The support ring 202 and the mounting wing ring 203 are sleeved on the outside of the stirring rod 113, and when one end of multiple second straight tube portions 120 away from the curved tube portion 119 passes through the support ring 202, the mounting wing ring 203 is fixed to the stirring rod 113 by screws, thereby completing the installation of the support member 201.

[0045] When using the electrocatalytic oxidation treatment device for difficult-to-degrade wastewater of this embodiment, the support ring 202 and the mounting wing ring 203 are sleeved on the outside of the stirring rod 113, and when the end of the plurality of second straight pipe portions 120 away from the curved pipe portion 119 passes through the support ring 202, the mounting wing ring 203 is fixed to the stirring rod 113 by screws, thereby completing the installation of the support member 201. By arranging the support member 201 at the end of the stirring rod 113 away from the diverter 111, the support member 201 is used to support the plurality of second straight pipe portions 120, so that the structure of the diverter pipe 112 is more stable during rotation.

[0046] Third embodiment:

[0047] Based on the first embodiment, please refer to Figure 6 and Figure 7 , Figure 6 This is a schematic diagram of the structure of the electrocatalytic oxidation treatment device for refractory wastewater according to the third embodiment. Figure 7 yes Figure 6 A magnified view of the local structure at B.

[0048] The present invention provides a device for electrocatalytic oxidation treatment of refractory wastewater, which also includes a protective shell 301 , wherein the protective shell 301 includes a first shell 302 and a second shell 303 .

[0049] According to this specific embodiment, the outer cover of the output gear 117 and the transmission gear 127 is provided with the protective shell 301, and the end of the protective shell 301 close to the mounting seat 106 is provided with a mounting foot 304, and the mounting foot 304 is detachably connected to the mounting seat 106. The protective shell 301 is arranged on the outside of the output gear 117 and the transmission gear 127, and the protective shell 301 is used to protect the output gear 117 and the transmission gear 127 to prevent the external environment from interfering with the meshing point of the output gear 117 and the transmission gear 127.

[0050] Among them, the first shell 302 and the second shell 303 are respectively located on both sides of the output gear 117, and the mounting foot 304 is provided on a side of the first shell 302 close to the mounting seat 106. The second shell 303 is detachably connected to the first shell 302 and is located on a side of the first shell 302 away from the mounting foot 304. After the first shell 302 and the second shell 303 are respectively placed on both sides of the output gear 117, the mounting foot 304 is fixed to the mounting seat 106 by screws, and the second shell 303 is fixed to the first shell 302 by screws, thereby completing the installation of the protective shell 301.

[0051] When using the electrocatalytic oxidation treatment device for difficult-to-degrade wastewater of this embodiment, after placing the first shell 302 and the second shell 303 on both sides of the output gear 117 respectively, the mounting foot 304 is fixed to the mounting seat 106 by screws, and the second shell 303 is fixed to the first shell 302 by screws, thereby completing the installation of the protective shell 301. By arranging the protective shell 301 on the outside of the output gear 117 and the transmission gear 127, the output gear 117 and the transmission gear 127 are protected by the protective shell 301 to prevent the external environment from interfering with the meshing portion of the output gear 117 and the transmission gear 127.

[0052] See also Figure 8 The present invention also provides a process for electrocatalytic oxidation treatment of refractory wastewater, which is applied to the above-mentioned refractory wastewater electrocatalytic oxidation treatment device, and the steps are as follows:

[0053] S1: Put a proper amount of wastewater into the device housing 101 through the water inlet 122, turn on the power control device 102, supply power to the electrode rod 121, and use the electrode rod 121 to perform electrocatalytic oxidation and degradation of the wastewater;

[0054] S2: while the wastewater is being electrocatalytically oxidized and degraded, the circulation pump 103 is started, water is introduced through the circulation water inlet pipe 124, and then discharged from the circulation water outlet pipe 125, and filtered and purified through the first filter assembly 104;

[0055] S3: starting the driving assembly 107, driving the hollow tube 108 to rotate on the mounting seat 106 through the transmission gear 127, and driving the stirring rod 113 to rotate while the hollow tube 108 rotates inside the device housing 101, so that the stirring blade 114 on the stirring rod 113 stirs the wastewater in the device housing 101, mixes the wastewater in the device housing 101, and prevents the wastewater from settling inside the device housing 101;

[0056] S4: while the hollow tube 108 is rotating, the air pump 109 is started to deliver the airflow to the inside of the flow divider 111 through the input pipe 110, and then deliver the gas to the plurality of flow divider pipes 112, and deliver the gas to the inside of the device box 101 through the plurality of aeration holes 126 provided on the flow divider pipes 112;

[0057] S5: After electrocatalytic oxidation, water is discharged through the water outlet 123, and clean water is discharged after being filtered and purified by the second filter assembly 105.

[0058] In this embodiment, a proper amount of wastewater is put into the device housing 101 through the water inlet 122, the power control device 102 is turned on, power is supplied to the electrode rod 121, and the electrode rod 121 is used to electrocatalytically oxidize and degrade the wastewater. While the wastewater is being electrocatalytically oxidized and degraded, the circulation pump 103 is started, water is taken in through the circulation water inlet pipe 124, and then discharged from the circulation water outlet pipe 125, and filtered and purified through the first filter component 104. The driving component 107 is started, and the hollow tube 108 is driven to rotate on the mounting seat 106 through the transmission gear 127. When the hollow tube 108 rotates inside the device housing 101, the stirring rod is driven 113 rotates, so that the stirring blades 114 on the stirring rod 113 are used to stir the wastewater in the device box 101, mix the wastewater in the device box 101, and prevent the wastewater from settling inside the device box 101. While the hollow tube 108 rotates, the air pump 109 is started, and the air flow is transported to the inside of the diverter 111 through the input pipe 110, and then the gas is transported to the multiple diverter pipes 112, and the gas is transported to the inside of the device box 101 through the multiple aeration holes 126 provided on the diverter pipes 112. After electrocatalytic oxidation, water is discharged through the water outlet 123, and clean water is discharged after filtration and purification by the second filter component 105.

[0059] What is disclosed above is only a preferred embodiment of the present invention, and it certainly cannot be used to limit the scope of rights of the present invention. Ordinary technicians in this field can understand that all or part of the processes of the above embodiment and equivalent changes made according to the claims of the present invention still fall within the scope of the invention.

Claims

1. A device for electrocatalytic oxidation treatment of difficult-to-degrade wastewater, comprising a device housing, a power control device, a circulation pump, a first filter assembly and a second filter assembly, wherein the power control device is provided at one end of the top of the device housing, the power control device is electrically connected to an electrode rod, the electrode rod is provided inside the device housing, a water inlet is provided above the device housing, a water outlet is provided at the bottom of the device housing, the outer end of the water outlet is connected to the second filter assembly, the circulation pump is installed on the side of the device housing, the input end of the circulation pump is connected to a circulation water inlet pipe, the output end of the circulation pump is connected to a circulation water outlet pipe, the circulation water inlet pipe and the circulation pipe outlet pipe are both connected to the inside of the device housing, the circulation water inlet pipe and the circulation pipe outlet pipe are both installed with the first filter assembly, characterized in that It also includes an aeration and stirring mechanism; The aeration and stirring mechanism includes a mounting seat, a driving assembly, a hollow tube, an air pump, an input tube, a flow divider, a plurality of flow dividers, a stirring rod and a stirring blade. The mounting seat is fixedly connected to the device housing and is located outside the device housing. The hollow tube is rotatably connected to the mounting seat, and the hollow tube penetrates into the interior of the device housing. The air pump is also arranged on the outside of the device housing. The output end of the air pump is provided with the input tube, and the input tube is inserted into the interior of the hollow tube. The flow divider is arranged at one end of the hollow tube located inside the device housing. , multiple diversion pipes are evenly arranged on the outside of the diversion fluid, each of the diversion pipes is provided with multiple aeration holes, multiple diversion pipes and the diversion fluid are kept unobstructed, the diversion fluid is kept unobstructed with the hollow tube, one end of the stirring rod is detachably connected to the diversion fluid, the other end of the stirring rod is rotatably connected to the inner side wall of the device box, multiple stirring blades are evenly arranged on the stirring rod, the mounting seat is also provided with the driving assembly, the outside of the hollow tube is also provided with a transmission gear, and the output end of the driving assembly is mechanically transmitted with the transmission gear; Each of the flow dividing pipes comprises a first straight pipe portion, a curved pipe portion and a second straight pipe portion, one end of the curved pipe portion is fixedly connected to the first straight pipe portion, the other end of the curved pipe portion is fixedly connected to the second straight pipe portion, the first straight pipe portion is fixedly connected to the flow dividing body, the second straight pipe portion is parallel to the stirring rod, and the second straight pipe portion is located at the periphery of the stirring blade; A rotating bearing is embedded in the interior of one end of the hollow tube away from the flow divider, and one end of the input tube away from the air pump is embedded in the interior of the rotating bearing.

2. The electrocatalytic oxidation treatment device for refractory wastewater according to claim 1, characterized in that: The driving assembly includes a driving motor, a transmission and an output gear. The driving motor is detachably connected to the mounting seat and is located on a side of the mounting seat away from the device housing. The transmission is provided at the output end of the driving motor, and the output gear is provided at the output end of the transmission. The output gear is meshed with the transmission gear.

3. The electrocatalytic oxidation treatment device for refractory wastewater according to claim 1, characterized in that: The electrocatalytic oxidation treatment device for difficult-to-degrade wastewater also includes a support member, which is arranged at one end of the stirring rod away from the flow divider, and the support member is arranged in a disc structure, and one end of each second straight pipe portion away from the curved pipe portion passes through the support member.

4. The electrocatalytic oxidation treatment device for refractory wastewater according to claim 3, characterized in that: The support member includes a support ring and a mounting wing ring, wherein the mounting wing ring is fixedly connected to the support ring and is located on one side of the support ring, the support ring and the mounting wing ring are both sleeved on the outside of the stirring rod, and one end of each of the second straight tube portions away from the curved tube portion passes through the support ring, and the mounting wing ring is fixed to the stirring rod by screws.

5. A process for electrocatalytic oxidation treatment of refractory wastewater, applied to the electrocatalytic oxidation treatment device for refractory wastewater as claimed in claim 1, characterized in that: Here are the steps: Put a proper amount of wastewater into the inside of the device box through the water inlet, turn on the power control device, supply power to the electrode rod, and use the electrode rod to perform electrocatalytic oxidation and degradation of the wastewater; While the wastewater is being electrocatalytically oxidized and degraded, the circulation pump is started, water is introduced through the circulation water inlet pipe, discharged from the circulation water outlet pipe, and filtered and purified through the first filter assembly; The driving assembly is started, and the hollow tube is driven to rotate on the mounting seat through the transmission gear. When the hollow tube rotates inside the device box, the stirring rod is driven to rotate, so that the stirring blades on the stirring rod are used to stir the wastewater in the device box, mix the wastewater in the device box, and prevent the wastewater from settling inside the device box; While the hollow tube is rotating, the air pump is started to deliver the airflow to the interior of the flow divider through the input pipe, and then deliver the gas to the plurality of flow divider pipes, and deliver the gas to the interior of the device box through the plurality of aeration holes provided on the flow divider pipes; After electrocatalytic oxidation, water is discharged through the water outlet, and clean water is discharged after being filtered and purified by the second filter assembly.

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