An oxidation treatment device and process for refractory organic matter in industrial and mining wastewater

Abstract

The present invention provides an oxidation treatment device and process for difficult-to-degrade organic matter in industrial and mining wastewater, including: a box, an electrode rod, two of which are provided and plugged into the box; a power control box, which is electrically connected to the two electrode rods; a base, which is arranged in a ring shape and coaxially arranged with each electrode rod, and is rotatably connected to the inner wall of the box; an air pipe, whose two ends are fixed to the base, the middle part extends along the length direction of the electrode rod, and the air pipe is provided with air outlets at intervals along its length direction; an air pump, one end of which is used to supply ozone, and the other end is interconnected with the air inlet of the air pipe, which can drive the air pipe to discharge through the air outlet and drive the air pipe to rotate coaxially around the electrode rod; a spiral blade, which is coaxially arranged with the electrode rod and fixed to the air pipe. This technical solution, through the structural arrangement of the air pipe, not only improves the flow efficiency of wastewater, but also improves the catalytic efficiency and avoids the formation of sediment around the electrode rod.

Description

Technical Field

[0001] The present invention generally relates to the field of sewage treatment, and in particular to an oxidation treatment device and process for refractory organic matter in industrial and mining wastewater. Background Art

[0002] Refractory organic matter refers to organic matter that is decomposed very slowly and incompletely by microorganisms. Currently, wastewater can be treated by oxidizing and purifying the wastewater through electrocatalytic maintenance devices.

[0003] An organic matter oxidation treatment device before improvement includes a box, two electrode rods inserted into the box, one end of the two electrode rods is electrically connected to a power control device, and industrial and mining wastewater to be oxidized is introduced into the box. During the electrocatalytic process, the following problems may occur: organic matter and inorganic salts in the wastewater may directly undergo oxidation or reduction reactions on the surface of the electrode rods to form precipitates.

[0004] Therefore, the inventors believe that the electrode rod is in wastewater for a long time, and the sediment attached to the surface of the electrode rod affects the full contact between the electrode rod and the wastewater in the surrounding environment, thereby affecting the catalytic effect on the wastewater. Summary of the invention

[0005] In view of the problems existing in the above-mentioned prior art, the present invention provides an oxidation treatment device for difficult-to-degrade organic matter in industrial and mining wastewater, comprising: a box body, two electrode rods, which are provided and plugged into the box body; a power control box, which is electrically connected to the two electrode rods; a base, which is arranged in a ring shape and is coaxially arranged with each of the electrode rods, and is rotatably connected to the inner wall of the box body; an air pipe, both ends of which are fixed to the base and communicated with the inside of the base, the middle part of the air pipe extends along the length direction of the electrode rod, and the air pipe is provided with a plurality of air outlets at intervals along the length direction; an air pump, one end of which is used to supply ozone, and the other end of which is communicated with the air inlet of the air pipe, which can drive the air pipe to discharge gas through the air outlet and drive the air pipe to rotate coaxially around the electrode rod; a spiral blade, which is coaxially arranged with the electrode rod and fixed to the air pipe. By having the above-mentioned technical features, the supply of ozone can not only effectively disinfect and sterilize, oxidize and decompose organic matter, and remove heavy metals and inorganic matter, but also can drive the air pipe to rotate in the box due to the different positions and directions of the air outlets, thereby driving the spiral blades to rotate. When the spiral blades rotate, they will have a driving effect on the wastewater in the box, thereby accelerating the flow efficiency of the wastewater and making it easier to fully mix the ozone in the wastewater. Moreover, since the spiral blades are located on the peripheral side of the electrode rod, the spiral blades can reduce the adhesion of sediment on the electrode rod through physical action, and can also reduce the adhesion of sediment on the electrode rod due to the flow of liquid after the rotation of the spiral blades, thereby improving the oxidation catalytic effect of the electrode rod.

[0006] In some embodiments, a stabilizing rod is coaxially fixed to the end of the electrode rod, and a limiting tube is fixed to the area on the air pipe corresponding to the end of the stabilizing rod, which is sleeved on the stabilizing rod. Thus, the supporting area of ​​the air pipe and the electrode rod is increased, thereby ensuring the stability of the coaxial rotation of the air pipe and the electrode rod.

[0007] In some embodiments, the air pipe, spiral blade, stabilizer rod, and stopper tube are made of the same material as the electrode rod and are coated with the same catalytic coating. Thus, the air pipe, spiral blade, stabilizer rod, and stopper tube also play the role of the electrode rod, increasing the contact range between the electrode rod and the wastewater and improving the catalytic effect on the wastewater.

[0008] In some embodiments, the base includes

[0009] The upper bottom is annular and fixedly connected to the inner wall of the box, and its lower end is open;

[0010] The lower base is annular, arranged inside the upper base, and is sealingly and rotatably connected with the upper base;

[0011] The two ends of the air pipe are fixed to the bottom surface of the lower bottom, and the open end of the air pipe is connected to the inside of the base. Thus, the base can simultaneously realize the support of the air pipe, the rotation with the inner wall of the box body, and even the passage of ozone supply.

[0012] In some embodiments, a conduit is provided between the base and the air pump, one end of the conduit is interconnected with the air outlet of the air pump, and the other end of the conduit is connected to the peripheral side of the upper bottom and is interconnected with the inside of the base. Thus, the ozone supplied by the conduit is supplied to the inside of the base through the side wall of the upper bottom and passes into the inside of the air inlet pipe, thereby satisfying the interconnection between the ozone source and the inside of the air pipe.

[0013] In some embodiments, the air pipe is spirally arranged around the edge of the spiral blade. Thus, on the one hand, the air pipe is arranged around the edge of the spiral blade, which can increase the overall strength of the spiral blade, and on the other hand, the layout length of the air pipe is increased, so that multiple air outlets can be arranged within a unit length, thereby ensuring the support of the air pipe's rotational power.

[0014] In some embodiments, it also includes: a circulation pump, located outside the box; a circulation water inlet pipe, one end of which is interconnected with the inside of the box, and the other end is interconnected with the water inlet of the circulation pump; a circulation water outlet pipe, one end of which is interconnected with the water outlet of the circulation pump, and the other end is fixed to the peripheral side of the connection between the electrode rod and the box, and is interconnected with the inside of the box, and the end of the water outlet pipe is facing the direction of the spiral blade. Therefore, in order to ensure sufficient power during the rotation of the spiral blade, the circulation pump extracts the wastewater in the box and discharges it from the end of the electrode rod, impacting the spiral blade, thereby driving the spiral blade to rotate, further ensuring the stability of the rotation of the spiral blade, thereby ensuring the mixing efficiency of the wastewater in the box.

[0015] The present invention also provides an oxidation treatment process for refractory organic matter in industrial and mining wastewater, comprising the following steps:

[0016] Feeding, passing industrial and mining wastewater into the box;

[0017] Oxidation decomposition, start the air pump, drive the air pipe to rotate around the electrode rod, thereby driving the spiral blades to rotate, further allowing the ozone molecules to fully contact with the wastewater in the box;

[0018] Wastewater circulation: After the air pump is started, the circulation pump is turned on to drive the wastewater through the circulation pump to impact the end of the electrode rod toward the spiral blade at high speed;

[0019] Electric catalysis: During the wastewater stirring process, two electrode rods are energized to continuously oxidize and degrade pollutants in the wastewater;

[0020] Discharge the material, turn off the air pump and circulation pump, disconnect the power to the electrode rod, and finally discharge the treated wastewater.

[0021] Therefore, the introduced ozone not only helps the oxidation decomposition reaction, but also drives the air pipe to rotate around the electrode rod through the reaction force of gas discharge, thereby driving the stirring of the spiral blades; then the circulation pump is turned on, and wastewater is introduced to impact the spiral blades, thereby ensuring the stability of the spiral blades' rotation and further improving the stirring and mixing efficiency of the wastewater. The electrode rod is then energized, thereby accelerating the oxidation catalytic efficiency, and the rotating spiral blades are not prone to causing sediment to accumulate on the surface of the electrode rod.

[0022] It should be understood that the contents described in the summary of the invention are not intended to limit the key or important features of the embodiments of the present disclosure, nor are they intended to limit the scope of the present disclosure. Other features of the present disclosure will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 The overall structural schematic diagram of an oxidation treatment device for refractory organic matter in industrial and mining wastewater according to an embodiment of the present invention is shown.

[0024] Figure 2 A schematic diagram of the internal structure of an oxidation treatment device for refractory organic matter in industrial and mining wastewater according to an embodiment of the present invention is shown.

[0025] Figure 3 A schematic diagram of the explosion structure of a base in an oxidation treatment device for refractory organic matter in industrial and mining wastewater according to an embodiment of the present invention is shown.

[0026] Figure 4 A schematic structural diagram of a mixing device in an oxidation treatment device for refractory organic matter in industrial and mining wastewater according to an embodiment of the present invention is shown.

[0027] Figure 5 A schematic diagram of the air pipe structure in an oxidation treatment device for refractory organic matter in industrial and mining wastewater according to an embodiment of the present invention is shown.

[0028] Figure 6 A schematic structural diagram of a circulation device in an oxidation treatment device for refractory organic matter in industrial and mining wastewater according to an embodiment of the present invention is shown.

[0029] Figure 7 A flow chart of an oxidation treatment process for refractory organic matter in industrial and mining wastewater according to an embodiment of the present invention is shown.

[0030] Explanation of symbols

[0031] 1. Box body; 11. Wastewater inlet pipe; 12. Wastewater outlet pipe; 2. Electrode catalytic device; 21. Power control box; 22. Electrode rod; 3. Mixing device; 31. Base; 311. Upper bottom; 312. Lower bottom; 32. Air pipe; 321. Air outlet; 33. Spiral blade; 34. Air pump; 35. Conduit; 36. Stabilizer rod; 37. Limiting pipe; 4. Circulation device; 41. Circulation pump; 42. Circulation inlet pipe; 43. Circulation outlet pipe; 44. Ring pipe. DETAILED DESCRIPTION

[0032] Hereinafter, preferred embodiments (or implementation modes) of the present invention will be described in detail with reference to the accompanying drawings.

[0033] Reference below Figure 1-Figure 7 The invention will be used to describe an oxidation treatment device and process for refractory organic matter in industrial and mining wastewater.

[0034] Figure 1 The overall structure diagram of an oxidation treatment device for refractory organic matter in industrial and mining wastewater according to an embodiment of the present invention is shown. Figure 1 As shown, the present embodiment provides an oxidation treatment device for difficult-to-degrade organic matter in industrial and mining wastewater, comprising a housing 1 , a wastewater inlet pipe 11 and a wastewater outlet pipe 12 being arranged on one side of the housing 1 , and an electrode catalytic device 2 being arranged on the top of the housing 1 .

[0035] Figure 2 The internal structure diagram of an oxidation treatment device for refractory organic matter in industrial and mining wastewater according to an embodiment of the present invention is shown. Figure 2As shown, the electrode catalytic device 2 comprises a power control box 21 fixed on the top of the box 1, and two electrode rods 22 electrically connected to the power control box 21. Each electrode rod 22 is vertically inserted into the inside of the box 1 from the top of the box 1, and the two electrode rods 22 are arranged at a distance. In the electrocatalytic process for organic matter degradation, two electrodes are usually required, wherein the two electrode rods 22 serve as an anode and a cathode respectively. The anode is responsible for oxidizing organic matter and generating active oxygen through direct electrolysis or indirect electrolysis; while the cathode participates in the reduction reaction, such as reducing oxygen to generate hydrogen peroxide or reducing heavy metal ions.

[0036] Since the electrode rods 22 are immersed in wastewater for a long time, during the electrocatalytic process, organic matter and inorganic salts in the wastewater may undergo direct oxidation or reduction reactions on the surface of the electrode rods 22 to form precipitates. In order to avoid the above situation, a mixing device 3 is also provided on the periphery of each electrode rod 22. The mixing device 3 includes a base 31 coaxially arranged with the electrode rod 22 in the box body 1, an air pipe 32 fixed below the base 31, spiral blades 33 fixed to the air pipe 32 and spirally distributed around the electrode rod 22, and an air pump 34 fixed to the top of the box body 1, the air inlet of the air pump 34 is connected to the ozone, and the other end is connected to the air pipe 32.

[0037] Figure 3 The exploded structural diagram of the base 31 in the oxidation treatment device for the refractory organic matter in industrial and mining wastewater according to the embodiment of the present invention is shown. Figure 3 As shown, the base 31 includes an annular upper base 311, the top surface of the upper base 311 is fixedly connected to the top wall of the box body 1, the bottom surface of the upper base 311 is open, and a lower base 312 coaxially arranged with the upper base 311 is arranged in the opening area of ​​the upper base 311, and the lower base 312 is also an annular structure, and its top surface is open, so that an annular chamber is formed between the upper base 311 and the lower base 312, and the upper base 311 and the lower base 312 are coaxially rotatably connected, and the connection between the upper base 311 and the lower base 312 is sealed to reduce gas leakage.

[0038] In some embodiments, a bearing is further provided at the connection between the upper bottom 311 and the lower bottom 312 to reduce the contact friction between the upper bottom 311 and the lower bottom 312 and improve the rotation efficiency between the upper bottom 311 and the lower bottom 312. In addition, since the base 31 is fixed to the top area of ​​the box body 1, it is not easy to be immersed in the wastewater environment for a long time, thereby ensuring the service life of the base 31.

[0039] A conduit 35 is provided between the air pump 34 and the base 31 . One end of the conduit 35 is communicated with the air outlet of the air pump 34 , and the other end of the conduit 35 is fixed to the peripheral side of the upper bottom 311 and communicated with the chamber inside the base 31 .

[0040] Figure 4The schematic diagram of the structure of a mixing device in an oxidation treatment device for refractory organic matter in industrial and mining wastewater according to an embodiment of the present invention is shown. Figure 4 As shown, the air pipe 32 is U-shaped as a whole, and both ends thereof are fixed on the bottom surface of the lower bottom 312 and communicate with the inner chamber of the base 31, so as to ensure that the ozone supplied by the conduit 35 passes through the chamber of the base 31 and finally enters the air inlet pipe 32. A plurality of air outlet holes 321 are arranged at intervals along the length direction of the air pipe 32 on the circumference of the air pipe 32, and the air outlet holes 321 are arranged on the back side of the rotation direction of the air pipe 32, so that the reverse force generated by the introduction of ozone and the discharge of gas through the air outlet holes 321 drives the air pipe 32 to rotate coaxially around the electrode rod 22.

[0041] The spiral blade 33 is located in the middle area of ​​the air pipe 32, and a gap is left between its inner wall and the electrode rod 22, which prevents the spiral blade 33 from directly contacting the outer wall of the electrode rod 22 during the rotation of the air pipe 32 around the electrode rod 22, and further prevents the spiral blade 33 from scratching the outer coating of the electrode rod 22, thereby ensuring the stability of the catalytic reaction of the electrode rod 22. Moreover, as the spiral blade 33 rotates, the thickness of the attachments on the electrode rod 22 increases, which is bound to interfere with the spiral blade 33, so the rotation of the spiral blade 33 has a physical scratching effect on the attachments; and as the spiral blade 33 rotates, it promotes the wastewater around the electrode rod 22, greatly reducing the possibility of redox reactions on the surface of the electrode rod 22.

[0042] A stabilizing rod 36 is coaxially fixed to the end of the electrode rod 22, and a limiting tube 37 connected to the end of the stabilizing rod 36 is fixed to the middle of the U-shaped air pipe 32, so that both ends and the middle area of ​​the air pipe 32 are interconnected with the external environment, thereby ensuring the stability of the air pipe 32 rotating around the electrode rod 22.

[0043] Figure 5 The schematic diagram of the structure of the gas pipe 32 in the oxidation treatment device for the refractory organic matter in industrial and mining wastewater according to the embodiment of the present invention is shown. Figure 5 As shown, in some embodiments, the air pipe 32 is distributed along the edge direction of the spiral blade 33 and is fixedly connected to the spiral blade 33, so that the air pipe 32 is distributed in a spiral as a whole, one end of which is fixedly connected to the bottom surface of the lower base 312, and one end extends to the end of the electrode rod 22, and is rotatably connected to the stabilizing rod 36 through a limit tube 37. On the one hand, the air pipe 32 is distributed in a spiral structure, which reduces the resistance between the spiral blade 33 and the wastewater during the rotation of the spiral blade 33, and also increases the strength of the spiral blade 33, ensuring the stability of the rotation of the spiral blade 33. On the other hand, the spiral distribution of the air pipe 32 indirectly increases the length of the air pipe 32 and increases the number of air outlet holes 321, thereby providing power for the rotation of the spiral blade 33.

[0044] Figure 6 The schematic diagram of the structure of the circulation device in the oxidation treatment device for the refractory organic matter in industrial and mining wastewater according to the embodiment of the present invention is shown. Figure 6 As shown, a circulation device 4 is provided on the top of the box 1, and the circulation device 4 includes a circulation pump 41 fixed on the top of the box 1, and the inlet end of the circulation pump 41 is connected to a circulation water inlet pipe 42, and the other end of the circulation water inlet pipe 42 is interconnected with the bottom of the box 1. The outlet end of the circulation pump 41 is connected to a circulation water outlet pipe 43, and the other end of the circulation water outlet pipe 43 is connected to an annular pipe 44, which is coaxially arranged with the fixed end of the electrode rod 22 and is interconnected with the inside of the box 1. When the circulation pump 41 is working, the wastewater in the box 1 is pumped out and passed into the box 1 through the annular pipe 44 area, which, on the one hand, speeds up the flow of the wastewater in the box 1, and on the other hand, the annular pipe 44 area is directly opposite to the end area of ​​the spiral blade 33, so that the wastewater passed in impacts the spiral blade 33, driving the rotation of the spiral blade 33, and ensuring the stability of the rotation of the spiral blade 33.

[0045] The air pipe 32, spiral blade 33, stabilizing rod 36, and limiting tube 37 are all made of the same material and coated with the same catalytic coating as the electrode rod 22. When the electrode rod 22 is electrified for catalysis, the spiral blade 33 and the air pipe 32 also play the role of the electrode rod 22 through the contact between the extension rod and the limiting tube 37, thereby increasing the contact range with the wastewater and improving the oxidation catalytic efficiency.

[0046] When the oxidation treatment device is working, ozone is introduced into the interior of the box 1 through the air outlet 321 of the air pipe 32. The ozone itself can play a role in efficient disinfection and sterilization, oxidation and decomposition of organic matter, and removal of heavy metals and inorganic matter. The reaction force of the air pipe 32 discharged through the air outlet 321 drives the air pipe 32 to rotate around the electrode rod 22, and finally drives the rotation of the spiral blade 33. The rotation of the spiral blade 33 then promotes the wastewater around the electrode rod 22, thereby improving the efficiency of the wastewater flow, and also improving the efficiency of the mixing of the ozone introduced and the wastewater, further improving the catalytic efficiency of the electrode rod 22.

[0047] Figure 7 The flowchart of an oxidation treatment process for refractory organic matter in industrial and mining wastewater according to an embodiment of the present invention is shown. Figure 7 As shown, an oxidation treatment process for refractory organic matter in industrial and mining wastewater, using the above oxidation treatment device, includes the following steps:

[0048] S1: Feeding, the wastewater to be treated is introduced into the box body 1 through the wastewater inlet pipe 11, and the liquid level of the wastewater is made to exceed four fifths of the entire length of the electrode rod 22 to ensure sufficient contact between the electrode rod 22 and the wastewater.

[0049] S2: Oxidation decomposition. When the liquid level in the box 1 meets the requirement, the water inlet valve is closed and the air pump 34 is started, so that ozone is introduced into the box 1 through the air pump 34.

[0050] Ozone molecules are in full contact with the wastewater environment, and due to the opening position of the air outlet 321 of the air pipe 32, the reaction force of the ozone discharge drives the air pipe 32 to rotate around the electrode rod 22, and drives the spiral blades 33 to rotate around the electrode rod 22. During the rotation of the spiral blades 33, the wastewater on the surrounding side is promoted, thereby accelerating the flow efficiency of the wastewater, and also increasing the flow range of ozone, and accelerating the reaction efficiency of ozone and the surrounding wastewater.

[0051] S3: Wastewater circulation. After the air pump 34 works normally, the circulation pump 41 is turned on to drive the wastewater in the box body 1 to pass from the top of the box body 1 into the interior of the box body 1 through the annular tube 44 at the end of the circulation pump 41. The annular tube 44 is directly opposite to the end of the spiral blade 33, which has an impact on the spiral blade 33, thereby providing assistance for the rotation of the spiral blade 33 and improving the stability of the rotation of the spiral blade 33.

[0052] S4: After the catalysis is powered on and the spiral blades 33 rotate stably, the power control box 21 is started, thereby powering on the two electrode rods 22, causing the two electrode rods 22 to undergo redox reaction. The rotation of the spiral blades 33 accelerates the flow efficiency of the liquid in the box 1, increases the radiation range of the electrode rods 22, and further improves the treatment efficiency of organic matter in the wastewater.

[0053] S5: Discharge. After the wastewater in the box 1 has fully catalyzed the reaction, the air pump 34 and the circulation pump 41 are turned off, and the electrode rod 22 is powered off. Finally, the treated wastewater is discharged.

[0054] In the description of this specification, the terms "connection", "installation", "fixation" and the like should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0055] The above are only preferred embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An oxidation treatment device for refractory organic matter in industrial and mining wastewater, characterized in that: include: Box (1), Two electrode rods (22) are provided and inserted into the box body (1); A power control box (21), which is electrically connected to the two electrode rods (22); A base (31) is arranged in a ring shape, is coaxially arranged with each electrode rod (22), and is rotatably connected to the inner wall of the box body (1); An air pipe (32), both ends of which are fixed to the base (31) and communicated with the inside of the base (31); a middle portion of the air pipe (32) extends along the length direction of the electrode rod (22); and the air pipe (32) is provided with a plurality of air outlet holes (321) spaced apart along the length direction thereof; An air pump (34), one end of which is used to supply ozone, and the other end of which is connected to the air inlet of the air pipe (32), and can drive the air pipe (32) to discharge ozone through the air outlet (321), and drive the air pipe (32) to rotate coaxially around the electrode rod (22); The spiral blade (33) is coaxially arranged with the electrode rod (22) and fixed to the air pipe (32).

2. The oxidation treatment device for refractory organic matter in industrial and mining wastewater according to claim 1 is characterized in that: The end of the electrode rod (22) is coaxially fixedly connected to a stabilizing rod (36), and a limiting tube (37) which is sleeved on the stabilizing rod (36) is fixedly connected to a region of the air pipe (32) corresponding to the end of the stabilizing rod (36).

3. The oxidation treatment device for refractory organic matter in industrial and mining wastewater according to claim 2, characterized in that: The air pipe (32), the spiral blade (33), the stabilizing rod (36), and the limiting tube (37) are made of the same material as the electrode rod (22) and are coated with the same catalytic coating.

4. According to the oxidation treatment device for refractory organic matter in industrial and mining wastewater according to claim 1, the base (31) comprises The upper bottom (311) is annular and fixedly connected to the inner wall of the box body (1), and its lower end is open; The lower base (312) is annular and is disposed inside the upper base (311) and is sealingly and rotatably connected to the upper base (311); The two ends of the air pipe (32) are fixed to the bottom surface of the lower base (312), and the open end of the air pipe (32) is connected to the inside of the base (31).

5. The oxidation treatment device for refractory organic matter in industrial and mining wastewater according to claim 4 is characterized in that: A conduit (35) is provided between the base (31) and the air pump (34), one end of the conduit (35) is communicated with the air outlet of the air pump (34), and the other end of the conduit (35) is connected to the peripheral side of the upper bottom (311) and is communicated with the interior of the base (31).

6. The oxidation treatment device for refractory organic matter in industrial and mining wastewater according to claim 1 is characterized in that: The air pipe (32) is arranged in a spiral shape around the edge of the spiral blade (33).

7. The oxidation treatment device for refractory organic matter in industrial and mining wastewater according to claim 1 is characterized in that: Also includes: A circulation pump (41) is located outside the housing (1); A circulating water inlet pipe (42), one end of which is in communication with the interior of the housing (1), and the other end of which is in communication with the water inlet of the circulating pump (41); A circulating water outlet pipe (43) has one end connected to the water outlet of the circulating pump (41), and the other end is fixed to the peripheral side where the electrode rod (22) is connected to the box (1) and is connected to the inside of the box (1), and the end of the water outlet pipe faces the direction of the spiral blade (33).

8. An oxidation treatment process for refractory organic matter in industrial and mining wastewater, applied to the oxidation treatment device as described in any one of claims 1 to 7, comprising the following steps: Feeding, passing industrial and mining wastewater into the box (1); Oxidative decomposition, starting the air pump (34), driving the air pipe (32) to rotate around the electrode rod (22), thereby driving the spiral blade (33) to rotate, so that the ozone molecules are fully in contact with the wastewater in the box (1); Wastewater circulation: after the air pump (34) is started, the circulation pump (41) is turned on, driving the wastewater to flow through the circulation pump (41) at high speed from the end of the electrode rod (22) toward the spiral blade (33); During the electrocatalytic process, two electrode rods (22) are electrified during the stirring of the wastewater to continuously oxidize and degrade the pollutants in the wastewater; Discharge the material, turn off the air pump (34) and the circulation pump (41), and cut off the power supply to the electrode rod (22), and finally discharge the treated wastewater.

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