A coking wastewater ozone catalytic oxidation advanced treatment equipment and treatment method

Abstract

The application discloses a kind of coking wastewater ozone catalytic oxidation advanced treatment equipment and processing method, equipment includes outer shell, mixing component and catalytic oxidation component;Mixing component includes hollow tube being arranged in the inside of outer shell, mixing motor being arranged at the top of outer shell, lifting sleeve being set on hollow tube and diffusion pipe being arranged in the circumferential direction of lifting sleeve;Lifting screw is connected with lifting sleeve and is arranged on mixing motor;Catalytic oxidation component includes separation net disc being arranged in the inside of outer shell, water treatment filler being filled in the inside of outer shell and being located above separation net disc and catalyst being filled in the bottom of outer shell;The equipment structure of the application is reasonable in design, coking wastewater treatment efficiency is high, effect is remarkable, and it is suitable for promotion and use.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of coking wastewater treatment, in particular to a coking wastewater ozone catalytic oxidation advanced treatment equipment and treatment method. BACKGROUND

[0002] Coking wastewater is high-concentration organic wastewater generated in the process of high-temperature distillation of coal, recovery and refining of chemical products. Phenolic pollutants in coking wastewater can cause protein denaturation, and polycyclic aromatic hydrocarbons and heterocyclic compounds in wastewater are considered to be carcinogenic and mutagenic substances. If discharged into water bodies, they will accumulate in aquatic organisms and enter the human body through the food chain, causing great harm to human health.

[0003] At present, the process of "pretreatment + biological denitrification + coagulation and sedimentation" commonly used by coking enterprises cannot meet the new national discharge requirements. Therefore, advanced oxidation technologies represented by ozone oxidation have developed rapidly and are widely used in the advanced treatment of coking wastewater.

[0004] However, the existing ozone oxidation device for coking wastewater has the defects of poor oxidation capacity, incomplete wastewater treatment, large amount of catalyst and high treatment cost. SUMMARY

[0005] In view of the above technical problems, the present application provides a coking wastewater ozone catalytic oxidation advanced treatment equipment and treatment method.

[0006] The technical scheme of the present application is: a coking wastewater ozone catalytic oxidation advanced treatment equipment, comprising a shell body, a mixing assembly arranged at the upper end inside the shell body, and a catalytic oxidation assembly arranged at the lower end inside the shell body; a partition plate is arranged inside the shell body, and a water flow channel is arranged through the partition plate; an opening member is arranged on the partition plate; a sewage pipe is arranged at the top of the shell body, and a gas collection pipe and a drain pipe are arranged in sequence on the side wall below the partition plate;

[0007] The mixing assembly comprises a hollow tube arranged inside the shell body and connected with the partition plate, a mixing motor arranged at the top of the shell body through a motor support, a lifting sleeve sleeved on the hollow tube, and a plurality of diffusion pipes distributed equidistantly in the circumferential direction of the lifting sleeve; the output end of the mixing motor is provided with a lifting lead screw which penetrates the shell body and is sleeved inside the hollow tube; a threaded block which penetrates the hollow tube and is threadedly connected with the lifting lead screw is arranged on the inner side of the lifting sleeve, and the threaded block is slidingly connected with the hollow tube; a gas injection port is arranged on each diffusion pipe, and each diffusion pipe is connected with the outside of the shell body through a connecting hose;

[0008] The catalytic oxidation assembly comprises a separation net disc arranged inside the outer shell and below the partition plate, a water treatment filler filled inside the outer shell and above the separation net disc, and a catalyst filled at the bottom of the outer shell; and a movable cover plate is arranged on the side wall of the outer shell and corresponds to the positions of the water treatment filler and the catalyst.

[0009] Further, the opening member comprises a conversion plate rotationally connected to the partition plate, a first rotating shaft penetrating through the outer shell and rotationally connected to the outer shell, and a first electric rod arranged on the side wall of the outer shell; the conversion plate is provided with a slot capable of being communicated with the water flow channel, and a bevel gear is arranged outside the conversion plate; one end of the first rotating shaft is provided with a first bevel gear meshingly connected with the bevel gear, and the other end is provided with a first connecting gear; a first toothed plate is slidingly connected to the side wall of the outer shell and is meshingly connected with the first connecting gear and connected with the first electric rod.

[0010] Description: when the first electric rod pushes the first toothed plate to move downward along the side wall of the outer shell, the first connecting gear drives the first bevel gear to rotate through the first rotating shaft, and the rotation of the conversion plate is realized by the meshing action of the first bevel gear and the bevel gear, so that the slot is communicated with the water flow channel.

[0011] Further, a driving gear is arranged on the lifting screw, a vertical shaft penetrating through the outer shell is slidingly connected to the lifting sleeve, a first auxiliary gear meshingly connected with the driving gear is arranged at the top end of the vertical shaft, and a second auxiliary gear is slidingly connected to the vertical shaft and located inside the lifting sleeve; a rotating sleeve is arranged outside the lifting sleeve, teeth meshingly connected with the second auxiliary gear are arranged on the inner wall of the rotating sleeve, the rotating sleeve is hollow, and an air inlet ring is rotationally connected to the rotating sleeve; a connecting hose is connected with the air inlet ring, and a diffusion pipe is connected with the rotating sleeve.

[0012] Description: during the rotation of the lifting screw, the vertical shaft is driven to rotate by the driving gear, and the rotating sleeve is driven to rotate by the second auxiliary gear on the vertical shaft at this time, so that the rotating sleeve is continuously rotated during the ascending process along the hollow pipe, which is beneficial to improve the diffusion efficiency of ozone in sewage.

[0013] Further, a defoaming assembly arranged at the top of the outer shell is further included; the defoaming assembly comprises a support arranged at the top of the outer shell and sleeved outside the hollow pipe, and a plurality of crushing cones equidistantly distributed on the lower bottom surface of the support.

[0014] Description: the bubbles at the top of the outer shell are pierced and crushed by the crushing cones, so that the bubbles can be prevented from blocking the equipment pipeline.

[0015] Further, the upper end surface of the support is provided with a sliding rod penetrating the outer shell, and the top end of the sliding rod is provided with an integrated sleeve arranged outside the motor support; a compression spring is arranged on the sliding rod and abuts against the upper end surface of the outer shell; a tooth groove is arranged on the inner wall of the integrated sleeve; a second rotating shaft is rotatably connected to the top end of the outer shell; an incomplete gear is arranged at one end of the second rotating shaft and meshingly connected with the tooth groove, and a second bevel gear is arranged at the other end of the second rotating shaft; a third bevel gear is meshingly connected with the second bevel gear and arranged on the lifting lead screw;

[0016] It is explained that during the rotation of the lifting lead screw, the third bevel gear drives the second rotating shaft to rotate, so that the incomplete gear drives the integrated sleeve to move, and due to the action of the compression spring, the integrated sleeve drives the sliding rod and the support to reciprocate up and down on the top end of the outer shell, thereby improving the defoaming efficiency.

[0017] Further, a stirring shaft is rotatably connected to the separation net disc, and stirring frames are arranged at both ends of the stirring shaft; a fourth bevel gear is arranged in the stirring shaft and located inside the separation net disc; a third rotating shaft corresponding to the position of the fourth bevel gear is rotatably connected to the outer shell; a fifth bevel gear is arranged at one end of the third rotating shaft and meshingly connected with the fourth bevel gear, and a second connecting gear is arranged at the other end of the third rotating shaft; a second toothed plate meshingly connected with the second connecting gear is slidably connected to the side wall of the outer shell; and a second electric rod connected with the second toothed plate is arranged on the side wall of the outer shell.

[0018] It is explained that the second electric rod is used to push the second toothed plate to move downward along the side wall of the outer shell, and the meshing action of the fifth bevel gear and the fourth bevel gear is used to realize the rotation of the stirring shaft and the stirring frame, so as to facilitate the stirring treatment of the water treatment filler and the catalyst, and avoid the adhesion of pollutants on the surface of the water treatment filler and the catalyst to affect their effect.

[0019] Further, an electric heating disc is arranged at the inner bottom of the outer shell.

[0020] It is explained that the electric heating disc is used to heat and treat the wastewater, so that the ozone in the treated wastewater can quickly escape, thereby improving the safety of wastewater discharge.

[0021] Further, a filter box is arranged on the lower bottom surface of the partition plate, and a cleaning pipe penetrating the outer shell is arranged on the filter box.

[0022] It is explained that the filter box is used for primary filtration treatment of the coking wastewater, which not only reduces the difficulty of subsequent treatment of the wastewater, but also avoids the blockage of the equipment by impurities in the wastewater.

[0023] The application also provides a coking wastewater ozone catalytic oxidation deep treatment method based on the above-mentioned coking wastewater ozone catalytic oxidation deep treatment device, which comprises the following steps:

[0024] S1, the mixed motor is connected with external power supply, the external ozone machine is connected with the diffusion pipe through the connecting hose, and then the coking wastewater is passed through the sewage pipe and is passed into the inside of the shell;

[0025] S2, the ozone is diffused into the coking wastewater through the gas jet on the diffusion pipe; simultaneously, the mixed motor drives the lifting lead screw to rotate, so that the lifting sleeve drives the diffusion pipe to move up and down along the hollow pipe under the action of the threaded block, and the mixing uniformity of the ozone in the coking wastewater is promoted; wherein the input amount of ozone is 20-30mg / L, and the mixing time of ozone and coking wastewater is 40-60min;

[0026] S3, the mixture of ozone and wastewater is passed into the inside of the shell below through the water flow channel on the partition plate by opening the component; the wastewater is first reacted with ozone under the action of the water treatment filler during the descending process, and is subjected to primary purification treatment, and then is subjected to catalytic oxidation treatment, and the treated coking wastewater is discharged through the drain pipe; the ozone escaped from the wastewater during the reaction process is discharged from the shell through the gas collection pipe for secondary utilization; wherein the residence time of the wastewater at the lower end of the shell is 20-35min.

[0027] Compared with the prior art, the beneficial effects of the present application are reflected in the following points:

[0028] Firstly, the device structure of the present application is reasonable, the coking wastewater is first subjected to direct ozone oxidation treatment, and most of the organic matters are removed; then the coking wastewater is subjected to catalytic oxidation treatment, which is beneficial to improve the thoroughness of the coking wastewater treatment;

[0029] Secondly, the present application utilizes the mixing assembly to uniformly mix the ozone and the coking wastewater, so that the ozone can fully react with the coking wastewater, the difficulty of catalytic oxidation treatment of the coking wastewater is reduced, and the utilization rate of ozone is also improved;

[0030] Thirdly, the present application utilizes the defoaming assembly to eliminate the bubbles generated during the reaction of wastewater and ozone, avoids the influence of bubbles on the reaction, and improves the operation stability of the device; at the same time, the wastewater is heated by the electric heating disc, so that the ozone mixed in the wastewater can be quickly decomposed and attenuated, and the pollution of ozone to the environment during the wastewater discharge process is avoided. BRIEF DESCRIPTION OF DRAWINGS

[0031] Figure 1 is a longitudinal section view of the device of the present application;

[0032] Figure 2 is a front view of the device of the present application;

[0033] Figure 3 is a connection schematic view of the conversion plate and the partition plate of the present application;

[0034] Figure 4 is a schematic diagram of the connection between the first auxiliary gear and the drive gear of the present application;

[0035] Figure 5 is a schematic diagram of the connection between the rotating sleeve and the lifting sleeve of the present application;

[0036] Figure 6 is a schematic diagram of the connection between the rotating sleeve, the lifting sleeve and the hollow tube of the present application;

[0037] Figure 7 is a schematic diagram of the connection between the integrated sleeve and the incomplete gear of the present application;

[0038] Figure 8 is a schematic diagram of the connection between the crushing cone and the support of the present application;

[0039] Wherein, 1 - outer shell, 10 - partition, 100 - water flow channel, 11 - opening component, 110 - conversion plate, 1100 - slot, 111 - first rotating shaft, 1110 - first bevel gear, 1111 - first connecting gear, 112 - first electric rod, 113 - bevel gear ring, 114 - first toothed plate, 12 - sewage pipe, 13 - gas collection pipe, 14 - drain pipe, 2 - mixing assembly, 20 - hollow tube, 21 - mixing motor, 210 - motor support, 22 - lifting sleeve, 220 - threaded block, 23 - diffusion pipe, 230 - gas nozzle, 24 - lifting lead screw, 240 - drive gear, 25 - vertical shaft, 250 - first auxiliary gear, 251 - second auxiliary gear, 26 - rotating sleeve, 260 - air inlet ring, 3 - catalytic oxidation assembly, 30 - separation mesh disc, 31 - movable cover plate, 32 - stirring shaft, 320 - fourth bevel gear, 33 - stirring frame, 34 - third rotating shaft, 340 - fifth bevel gear, 341 - second connecting gear, 342 - second toothed plate, 35 - second electric rod, 4 - defoaming assembly, 40 - support, 41 - crushing cone, 42 - sliding rod, 420 - compression spring, 43 - integrated sleeve, 430 - gear slot, 44 - second rotating shaft, 440 - incomplete gear, 441 - second bevel gear, 442 - third bevel gear, 5 - electric heating disc, 6 - filter box, 60 - cleaning pipe. DETAILED DESCRIPTION

[0040] Example 1

[0041] As Figure 1The device for deep treatment of coking wastewater by ozone catalytic oxidation comprises an outer shell 1, a mixing assembly 2 arranged at the upper end inside the outer shell 1 and a catalytic oxidation assembly 3 arranged at the lower end inside the outer shell 1; a partition plate 10 is arranged inside the outer shell 1, and a water flow channel 100 is arranged through the partition plate 10; an opening member 11 is arranged on the partition plate 10; a sewage pipe 12 is arranged at the top end of the outer shell 1, and a gas collecting pipe 13 and a drain pipe 14 are sequentially arranged on the side wall below the partition plate 10; the opening member 11 is a clearance product;

[0042] As shown in Figure 1 、 2 , the mixing assembly 2 comprises a hollow tube 20 arranged inside the outer shell 1 and connected with the partition plate 10, a mixing motor 21 arranged at the top end of the outer shell 1 through a motor support 210, a lifting sleeve 22 sleeved on the hollow tube 20 and four diffusion tubes 23 equidistantly arranged in the circumferential direction of the lifting sleeve 22; the output end of the mixing motor 21 is provided with a lifting lead screw 24 penetrating through the outer shell 1 and sleeved inside the hollow tube 20; the inner side of the lifting sleeve 22 is provided with a threaded block 220 penetrating through the hollow tube 20 and threadedly connected with the lifting lead screw 24, and the threaded block 220 is slidingly connected with the hollow tube 20; each diffusion tube 23 is provided with a gas spout 230, and each diffusion tube 23 is in communication with the outside of the outer shell 1 through a connecting hose;

[0043] As shown in Figure 1 、 2 , the catalytic oxidation assembly 3 comprises a separation net disc 30 arranged inside the outer shell 1 and below the partition plate 10, a water treatment filler filled inside the outer shell 1 and above the separation net disc 30 and a catalyst filled at the bottom inside the outer shell 1; the side wall of the outer shell 1 is provided with a movable cover plate 31 corresponding to the positions of the water treatment filler and the catalyst; wherein the water treatment filler is a ceramsite particle with a particle size of 2-4 mm, and the catalyst is a copper oxide particle with a particle size of 1-3 mm.

[0044] Example 2

[0045] The embodiment describes a method for deep treatment of coking wastewater by ozone catalytic oxidation, based on the device for deep treatment of coking wastewater by ozone catalytic oxidation of example 1, comprising the following steps:

[0046] S1, connect the mixing motor 21 with the external power supply, and connect the external ozone machine with the diffusion tube 23 through the connecting hose; then, introduce the coking wastewater into the outer shell 1 through the sewage pipe 12;

[0047] S2, ozone is diffused into the coking wastewater through the gas jet 230 on the diffusion pipe 23; at the same time, the mixing motor 21 is used to drive the lifting screw 24 to rotate, so that the lifting sleeve 22 drives the diffusion pipe 23 to move up and down along the hollow pipe 20 under the action of the threaded block 220, and the mixing uniformity of ozone in the coking wastewater is promoted; wherein the amount of ozone introduced is 20mg / L, and the mixing time of ozone and coking wastewater is 40min;

[0048] S3, the mixture of ozone and wastewater is made to enter the inside lower part of the outer shell 1 through the water flow channel 100 on the partition plate 10 by opening the component 11; during the descent of the wastewater, the wastewater is first reacted with ozone under the action of the water treatment filler to perform primary purification treatment, and then is catalytically oxidized by the catalyst, and the treated coking wastewater is discharged through the drain pipe 14; the ozone escaped from the wastewater during the reaction is discharged from the outer shell 1 through the gas collection pipe 13 for secondary use; wherein the residence time of the wastewater at the lower end inside the outer shell 1 is 20min.

[0049] Example 3

[0050] The difference between this embodiment and example 1 is that:

[0051] As shown in Figure 1 , 2 , the opening component 11 includes a conversion plate 110 rotatably connected to the partition plate 10, a first rotating shaft 111 penetrating through the outer shell 1 and rotatably connected to the outer shell 1, and a first electric rod 112 arranged on the side wall of the outer shell 1; the conversion plate 110 is provided with a slot 1100 capable of conducting with the water flow channel 100, and the conversion plate 110 is externally sleeved with a bevel gear 113; one end of the first rotating shaft 111 is provided with a first bevel gear 1110 meshed and connected with the bevel gear 113, and the other end is provided with a first connecting gear 1111; a first toothed plate 114 is slidingly connected with the first connecting gear 1111 and connected with the first electric rod 112 on the side wall of the outer shell 1;

[0052] As shown in Figure 1 , the lower bottom surface of the partition plate 10 is provided with a filter box 6, and the filter box 6 is provided with a cleaning pipe 60 penetrating through the outer shell 1.

[0053] Example 4

[0054] This embodiment describes a coking wastewater ozone catalytic oxidation deep treatment method, which is based on the coking wastewater ozone catalytic oxidation deep treatment equipment of example 3, and differs from example 2 in that:

[0055] In step S2, the amount of ozone introduced is 25mg / L, and the mixing time of ozone and coking wastewater is 50min;

[0056] In S3, the first electric rod 112 pushes the first toothed plate 114 to move downward along the side wall of the outer shell 1. At this time, the first connecting gear 1111 drives the first bevel gear 1110 to rotate through the first rotating shaft 111. The meshing action of the first bevel gear 1110 and the bevel gear ring 113 realizes the rotation of the conversion plate 110, so that the slot 1100 is connected to the water flow channel 100. The wastewater enters the filter box 6 through the water flow channel 100 for mechanical energy filtration.

[0057] The wastewater stays in the lower part of the outer shell 1 for 30 minutes.

[0058] Example 5

[0059] The difference between this embodiment and embodiment 3 is that:

[0060] like Figure 4 , 6 As shown, a drive gear 240 is sleeved on the lifting screw 24, and a vertical shaft 25 penetrating the outer shell 1 is slidably engaged on the lifting sleeve 22. A first auxiliary gear 250 that meshes with the drive gear 240 is provided at the top of the vertical shaft 25, and a second auxiliary gear 251 located inside the lifting sleeve 22 is slidably engaged on the vertical shaft 25. A rotating sleeve 26 is sleeved on the outside of the lifting sleeve 22. Teeth that mesh with the second auxiliary gear 251 are provided on the inner wall of the rotating sleeve 26. The rotating sleeve 26 is hollow inside, and an air intake ring 260 is rotatably engaged on the rotating sleeve 26. A connecting hose is connected to the air intake ring 260, and a diffuser 23 is connected to the rotating sleeve 26.

[0061] Example 6

[0062] This embodiment describes a method for deep treatment of coking wastewater by ozone catalytic oxidation, based on the ozone catalytic oxidation deep treatment equipment for coking wastewater in Embodiment 5, which differs from Embodiment 4 in that:

[0063] In step S2, during the rotation of the lifting screw 24, the drive gear 240 drives the vertical shaft 25 to rotate. At this time, the second auxiliary gear 251 on the vertical shaft 25 drives the rotating sleeve 26 to rotate, so that the rotating sleeve 26 rotates continuously as it rises along the hollow tube 20.

[0064] The ozone injection rate was 30 mg / L, and the mixing time between ozone and coking wastewater was 60 min.

[0065] In step S3, the wastewater stays in the lower part of the outer shell 1 for 35 minutes.

[0066] Example 7

[0067] The difference between this embodiment and embodiment 5 is that:

[0068] like Figure 1 ,4 , 7, 8 further comprises a defoaming assembly 4 arranged on the inner top of the outer shell 1; the defoaming assembly 4 comprises a support 40 arranged on the inner top of the outer shell 1 and sleeved outside the hollow pipe 20 and a plurality of crushing cones 41 equidistantly arranged on the lower bottom of the support 40; the upper end surface of the support 40 is provided with a sliding rod 42 penetrating through the outer shell 1, the top end of the sliding rod 42 is provided with an integrated sleeve 43 sleeved outside the motor support 210; the sliding rod 42 is sleeved with a compression spring 420 abutting against the upper end surface of the outer shell 1; the inner wall of the integrated sleeve 43 is provided with a gear slot 430; the outer shell 1 is rotatably clamped with a second rotating shaft 44 at the top end; the second rotating shaft 44 is provided with an incomplete gear 440 engaged with the gear slot 430 at one end and a second bevel gear 441 at the other end; the lifting lead screw 24 is sleeved with a third bevel gear 442 engaged with the second bevel gear 441.

[0069] Embodiment 8

[0070] The embodiment describes a coking wastewater ozone catalytic oxidation advanced treatment method, based on the coking wastewater ozone catalytic oxidation advanced treatment equipment of embodiment 7, which is different from embodiment 6 in that:

[0071] In step S2, during the rotation of the lifting lead screw 24, the third bevel gear 442 drives the second rotating shaft 44 to rotate, so that the incomplete gear 440 drives the integrated sleeve 43 to move, and due to the action of the compression spring 420, the integrated sleeve 43 drives the sliding rod 42 and the support 40 to reciprocate up and down on the top end of the outer shell 1, and the crushing cone 41 is used to crush the bubbles in the wastewater.

[0072] Embodiment 9

[0073] The embodiment is different from embodiment 7 in that:

[0074] As shown in Figure 1 , 2 , the separation net disc 30 is rotatably clamped with a stirring shaft 32, and the two ends of the stirring shaft 32 are provided with stirring frames 33; the stirring shaft 32 is sleeved with a fourth bevel gear 320 located inside the separation net disc 30; the outer shell 1 is rotatably clamped with a third rotating shaft 34 corresponding in position to the fourth bevel gear 320; the third rotating shaft 34 is provided with a fifth bevel gear 340 engaged with the fourth bevel gear 320 at one end and a second connecting gear 341 at the other end; the side wall of the outer shell 1 is slidably clamped with a second toothed plate 342 engaged with the second connecting gear 341; the side wall of the outer shell 1 is provided with a second electric rod 35 connected with the second toothed plate 342.

[0075] Embodiment 10

[0076] This embodiment describes a method for deep treatment of coking wastewater by ozone catalytic oxidation, based on the ozone catalytic oxidation deep treatment equipment for coking wastewater in Embodiment 9, which differs from Embodiment 8 in that:

[0077] In step S3, the second electric rod 35 is used to push the second toothed plate 342 to move downward along the side wall of the outer shell 1. The meshing action of the fifth bevel gear 340 and the fourth bevel gear 320 is used to realize the rotation of the stirring shaft 32 and the stirring frame 33, so as to stir the water treatment packing and catalyst.

[0078] Example 11

[0079] The difference between this implementation and Example 9 is that:

[0080] like Figure 1 As shown, an electric heating plate 5 is provided at the bottom inside the outer casing 1.

[0081] Example 12

[0082] This embodiment describes a method for deep treatment of coking wastewater by ozone catalytic oxidation, based on the ozone catalytic oxidation deep treatment equipment for coking wastewater in Embodiment 11. The difference from Embodiment 10 is that it further includes step S4.

[0083] S4. The treated coking wastewater is heated by the electric heating plate 5 to rapidly decompose and reduce the ozone in the wastewater.

[0084] It should be noted that the first electric rod 112, the hybrid motor 21, the second electric rod 35, and the electric heating plate 5 used in this invention all adopt existing technologies and are not specifically limited here. Appropriate products can be selected according to actual needs.

Claims

1. A coking wastewater ozone catalytic oxidation advanced treatment device, characterized in that, The utility model provides a sewage treatment device, including outer casing (1), set up in the inside upper end of outer casing (1) mixing assembly (2) and set up in the inside lower end of outer casing (1) catalytic oxidation assembly (3), the inside of outer casing (1) is provided with the baffle (10), the baffle (10) is provided with water flow channel (100) through, the baffle (10) is provided with the opening component (11), the outer casing (1) top is provided with sewage pipe (12), and the lateral wall is located below the baffle (10) and is sequentially provided with gas collection pipe (13) and drain pipe (14), The mixing assembly (2) includes a hollow tube (20) disposed inside the outer casing (1) and connected with the baffle (10), a mixing motor (21) disposed at the top of the outer casing (1) through a motor support (210), a lifting sleeve (22) sleeved on the hollow tube (20), and a plurality of diffusion tubes (23) equidistantly distributed circumferentially on the lifting sleeve (22). The output end of the mixing motor (21) is provided with a lifting lead screw (24) penetrating through the outer casing (1) and sleeved inside the hollow tube (20). The inner side of the lifting sleeve (22) is provided with a threaded block (220) penetrating through the hollow tube (20) and threadedly connected with the lifting lead screw (24). The threaded block (220) is slidingly connected with the hollow tube (20). Each diffusion tube (23) is provided with a gas injection port (230), and each diffusion tube (23) is respectively connected with the outside of the outer casing (1) through a connecting hose. The catalytic oxidation assembly (3) includes a separation mesh disc (30) disposed inside the outer casing (1) and below the baffle (10), a water treatment filler filled inside the outer casing (1) and above the separation mesh disc (30), and a catalyst filled at the bottom of the outer casing (1). The lateral wall of the outer casing (1) is provided with a movable cover plate (31) corresponding to the position of the water treatment filler and the catalyst. It also includes a defoaming assembly (4) disposed at the top of the outer casing (1). The defoaming assembly (4) includes a support (40) disposed at the top of the outer casing (1) and sleeved outside the hollow tube (20), and a plurality of breaking cones (41) equidistantly distributed on the lower bottom of the support (40). The upper end surface of the support (40) is provided with a sliding rod (42) penetrating through the outer casing (1). The top end of the sliding rod (42) is provided with an integrated sleeve (43) sleeved outside the motor support (210). The sliding rod (42) is sleeved with a compression spring (420) abutting against the upper end surface of the outer casing (1). The inner wall of the integrated sleeve (43) is provided with a gear slot (430). The top end of the outer casing (1) is rotatably connected with a second rotating shaft (44). One end of the second rotating shaft (44) is provided with an incomplete gear (440) engaged with the gear slot (430), and the other end is provided with a second bevel gear (441). The lifting lead screw (24) is sleeved with a third bevel gear (442) engaged with the second bevel gear (441).

2. The coking wastewater ozone catalytic oxidation advanced treatment equipment according to claim 1, characterized in that, The opening member (11) comprises a conversion plate (110) rotatably clamped on the partition plate (10), a first rotating shaft (111) penetrating the outer shell (1) and rotatably clamped with the outer shell (1), and a first electric rod (112) arranged on the side wall of the outer shell (1); the conversion plate (110) is provided with a slot (1100) capable of being communicated with the water flow channel (100), and a bevel gear (113) is arranged outside the conversion plate (110); one end of the first rotating shaft (111) is provided with a first bevel gear (1110) meshed with the bevel gear (113), and the other end is provided with a first connecting gear (1111); a first toothed plate (114) is slidably clamped on the side wall of the outer shell (1) and is meshed with the first connecting gear (1111) and connected with the first electric rod (112).

3. The coking wastewater ozone catalytic oxidation advanced treatment equipment according to claim 1, characterized in that, A driving gear (240) is sleeved on the lifting lead screw (24), a vertical shaft (25) penetrating the outer shell (1) is slidably clamped on the lifting sleeve (22), a first auxiliary gear (250) meshed with the driving gear (240) is arranged at the top end of the vertical shaft (25), and a second auxiliary gear (251) located in the inside of the lifting sleeve (22) is slidably clamped on the vertical shaft (25); a rotating sleeve (26) is sleeved outside the lifting sleeve (22), the inner wall of the rotating sleeve (26) is provided with teeth meshed with the second auxiliary gear (251), the inside of the rotating sleeve (26) is hollow, and an air inlet ring (260) is rotatably clamped on the rotating sleeve (26); the connecting hose is connected with the air inlet ring (260), and the diffusion pipe (23) is connected with the rotating sleeve (26).

4. The coking wastewater ozone catalytic oxidation advanced treatment equipment according to claim 1, characterized in that, The stirring shaft (32) is rotatably clamped on the partition net disc (30), and the stirring shaft (32) is provided with a stirring frame (33) at both ends; the fourth bevel gear (320) located in the inside of the partition net disc (30) is sleeved on the middle part of the stirring shaft (32); the third rotating shaft (34) corresponding to the position of the fourth bevel gear (320) is rotatably clamped on the outer shell (1); one end of the third rotating shaft (34) is provided with the fifth bevel gear (340) meshed with the fourth bevel gear (320), and the other end is provided with the second connecting gear (341); the second toothed plate (342) meshed with the second connecting gear (341) is slidably clamped on the side wall of the outer shell (1); the second electric rod (35) connected with the second toothed plate (342) is arranged on the side wall of the outer shell (1).

5. The coking wastewater ozone catalytic oxidation advanced treatment equipment according to claim 1, characterized in that, The electric heating disc (5) is arranged on the inner bottom of the outer shell (1).

6. The coking wastewater ozone catalytic oxidation advanced treatment equipment according to claim 1, characterized in that, The filter box (6) is arranged on the lower bottom surface of the partition plate (10), and the cleaning pipe (60) penetrating the outer shell (1) is arranged on the filter box (6).

7. A method for deep treatment of coking wastewater by ozone catalytic oxidation, based on the coking wastewater ozone catalytic oxidation deep treatment device according to any one of claims 1-6, characterized in that, The steps include: S1, connect the hybrid motor (21) with the external power supply, connect the external ozone machine with the diffusion pipe (23) through the connecting hose, then pass the coking wastewater into the inside of the outer shell (1) through the sewage pipe (12); S2, ozone diffuses into the coking wastewater through the gas jet (230) on the diffusion pipe (23); at the same time, the mixing motor (21) drives the lifting screw (24) to rotate, so that the lifting sleeve (22) drives the diffusion pipe (23) to move up and down along the hollow pipe (20) under the action of the threaded block (220), and the mixing uniformity of ozone in the coking wastewater is promoted; wherein the amount of ozone is 20~30mg / L, and the mixing time of ozone and coking wastewater is 40~60min; S3, by opening the component (11) so that the mixture of ozone and wastewater enters the inside lower part of the outer shell (1) through the water flow channel (100) on the partition (10); during the descent of the wastewater, it first reacts with ozone under the action of the water treatment filler for primary purification treatment, and then is catalytically oxidized by the catalyst, and the treated coking wastewater is discharged through the drain pipe (14); the ozone escaping from the wastewater during the reaction is discharged from the outer shell (1) through the gas collection pipe (13) for secondary use; wherein the residence time of the wastewater at the lower end of the outer shell (1) is 20~35min.

8. The method according to claim 7, wherein the method is characterized by, The inner bottom of the outer shell (1) is provided with an electric heating device (5).

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