Catalytic ozonation advanced treatment device for coking wastewater

Abstract

The invention relates to a coking wastewater ozone catalytic oxidation advanced treatment device which comprises a pure oxygen storage tank, an ozone generator, an ozone compressor, a wastewater delivery pump and an ozone catalytic oxidation tower, a gas outlet of the pure oxygen storage tank is communicated with a gas inlet of the ozone generator, and a gas outlet of the ozone generator is communicated with a gas inlet of the ozone compressor; the ozone catalytic oxidation tower comprises a tower body, the top end of the tower body is communicated with an exhaust pipe, one side of the upper portion of the tower body is communicated with an overflow pipe, the bottom of the tower body is open and detachably connected with a lifting base, the base is communicated with a water inlet pipe, and a water outlet of the waste water conveying pump is communicated with the water inlet pipe. A first motor is arranged in the first motor box, an output shaft of the first motor extends upwards into the sealing box, the bottom of the sealing box communicates with an air inlet pipe, and the air inlet pipe penetrates through the base and communicates with an air outlet of the ozone compressor. According to the invention, the coking wastewater can be fully mixed and contacted with ozone and a catalyst, the overall advanced treatment effect is better, and the quality is higher.

Description

Technical Field

[0001] The present invention belongs to the technical field of coking wastewater treatment, and particularly relates to a device for advanced treatment of coking wastewater by ozone catalytic oxidation. Background Art

[0002] At present, when deeply treating coking wastewater generated by coking plants, common treatment methods mainly include coagulation sedimentation method, membrane separation method, biological treatment method, advanced oxidation method, etc. The advanced oxidation method includes Fenton oxidation method, ozone oxidation method, electrochemical oxidation method, photocatalytic oxidation method, ultrasonic oxidation method, etc.

[0003] Among them, the ozone oxidation method mainly promotes the decomposition of ozone to generate non-selective hydroxyl radicals with strong oxidizing properties to effectively remove refractory and biotoxic organic substances in coking wastewater, such as phenols, polycyclic aromatic hydrocarbons, and nitrogen-containing heterocyclic compounds. It has the characteristics of fast reaction rate, almost no chemical residue, and secondary pollution. The equipment used mainly includes ozone generation and compression devices, coking wastewater conveying devices, and ozone catalytic oxidation tower equipment, etc. During treatment, ozone and wastewater are transported to the bottom of the ozone catalytic oxidation tower for aeration mixing. Then, as the wastewater in the tower continuously increases, the water level rises, enabling the gas-liquid mixed phase to flow through the catalyst layer from bottom to top. The catalytic effect of the catalyst is utilized to further improve the oxidation effect of ozone, thereby cooperating to achieve high-quality advanced treatment of coking wastewater. Finally, the wastewater rising to the top of the tower can be discharged through the overflow pipe at the top of the tower, and the excess ozone can also be discharged through the exhaust pipe at the top of the tower. However, in actual applications, the mixing effect of only one set of aeration devices at the bottom of the tower is not ideal, which is likely to cause insufficient mixing of ozone and wastewater, and the rising speed of the wastewater through the catalyst layer is relatively fast, and the contact between the wastewater and the catalyst at a fixed position is also insufficient, resulting in a low overall oxidation catalytic quality, which urgently needs to be solved. Summary of the Invention

[0004] In view of this, the purpose of the present invention is to provide a device for advanced treatment of coking wastewater by ozone catalytic oxidation, which can achieve sufficient mixing and contact of coking wastewater with ozone and catalyst to solve the above problems.

[0005] To achieve the above object, the technical solution adopted by the present invention is: A deep treatment device for coking wastewater by ozone catalytic oxidation, comprising a pure oxygen storage tank, an ozone generator, an ozone compressor, a wastewater transfer pump, and an ozone catalytic oxidation tower. The air outlet of the pure oxygen storage tank is communicated with the air inlet of the ozone generator. The air outlet of the ozone generator is communicated with the air inlet of the ozone compressor. The ozone catalytic oxidation tower includes a fixedly erected tower body. The top of the tower body is communicated with an exhaust pipe, one side of the upper part is communicated with an overflow pipe, the bottom is open and detachably connected with a liftable base. A water inlet pipe is communicated with the base inside the tower body. The water outlet of the wastewater transfer pump is communicated with the water inlet pipe. The center of the bottom of the base is fixedly provided with a first motor box, and the center of the top is fixedly provided with a sealed box. A first motor is fixedly arranged in the first motor box. The output shaft of the first motor penetrates upward through the base and extends into the sealed box. An air inlet pipe is communicated with the bottom of the sealed box. The air inlet pipe penetrates through the base and is communicated with the air outlet of the ozone compressor. Hollow rotating shafts are horizontally and rotatably arranged on the front, rear, left, and right sides of the lower part of the sealed box. One end of the hollow rotating shaft is located inside the sealed box, and a first bevel gear is fixedly sleeved on this end. The other end is located outside the sealed box, and a plurality of aeration heads are detachably communicated with the circumferential side of this end. A second bevel gear is fixedly sleeved on the output shaft of the first motor corresponding to the first bevel gear. The first bevel gears are vertically meshed with the second bevel gear. A third bevel gear is fixedly sleeved on the output shaft of the first motor above the second bevel gear. A crankshaft is horizontally and rotatably arranged in the sealed box above the third bevel gear. A fourth bevel gear is fixedly sleeved on the middle journal of the crankshaft. The fourth bevel gear is vertically meshed with the third bevel gear. Connecting rods are sleeved on the equal-height two connecting rod journals at the left and right ends of the crankshaft. The tops of the two connecting rods are hinged to the bottom of the same lifting plate. A lifting column is vertically fixedly arranged at the center of the top of the lifting plate. The lifting column extends out of the sealed box and is slidably sleeved up and down with the top of the sealed box. A cavity is arranged in the lifting column. A second motor capable of positive and negative rotation is fixedly arranged in the cavity. The output shaft of the second motor faces upward and is fixedly sleeved with a fifth bevel gear. Four groups of solid rotating shafts are evenly distributed on the circumferential side of the lifting column corresponding to the cavity. The solid rotating shafts are horizontally and rotatably arranged, and one end thereof extends into the cavity and is fixedly sleeved with a sixth bevel gear. The other end is coaxially and detachably connected with a main mesh cylinder. The sixth bevel gears are vertically meshed with the fifth bevel gear. A plurality of branch mesh cylinders are evenly distributed on the circumferential side of the main mesh cylinder. Catalysts are filled in both the main mesh cylinder and the branch mesh cylinders. The top of the lifting column is fixedly connected with an inverted L-shaped support rod. Two limiting plates are installed on the inner side wall of the tower body at upper and lower intervals. The distance between the two limiting plates is adapted to the lifting height of the lifting column, and travel switches are arranged on the opposite sides of the two limiting plates. The horizontal part of the support rod is located between the two limiting plates and can press the travel switches. A controller is fixedly arranged on the outer side wall of the tower body. The first motor, the second motor, and the two travel switches are all electrically connected to the controller.

[0006] Preferably, a flange is fixedly provided on the peripheral side of the bottom of the tower body. Four groups of double-rod hydraulic cylinders are evenly distributed at the top of the flange at circumferential intervals. The double-rod hydraulic cylinders are horizontally arranged, and the ends of the two piston rods of each double-rod hydraulic cylinder are fixedly connected with a locking plate. A plurality of locking rods distributed in a rectangular array are fixedly provided on the side of each locking plate facing away from the other. Positioning through grooves are formed on the flange on the side of each locking plate facing away from the other. Fixed plates are fixedly provided on the corresponding bases of the positioning through grooves. A plurality of fixing through holes are formed on the fixed plates. The base abuts against the flange. The fixed plates are inserted through the corresponding positioning through grooves. The locking plate abuts against the fixed plate on the same side, and the locking rods on the locking plate correspond to the fixing through holes on the corresponding fixed plate one by one and are inserted through them.

[0007] Preferably, sealing gaskets are fixedly provided on the top of the base and the bottom of the flange.

[0008] Preferably, single-rod hydraulic cylinders are vertically fixedly provided below the left and right sides of the base. The piston rods of the single-rod hydraulic cylinders face upward and are fixedly connected with the bottom of the base.

[0009] Preferably, a second motor box is fixedly provided on the inner side wall of the tower body corresponding to the limiting plate. A third motor is provided in the second motor box. The output shaft of the third motor extends upward out of the second motor box and is fixedly sleeved with one end of the two limiting plates away from the lifting column. The travel switch is arranged on one end of the limiting plate close to the lifting column.

[0010] Preferably, the water outlet of the waste water delivery pump is communicated with the water inlet pipe through a first hose, and the air outlet of the ozone compressor is communicated with the air inlet pipe through a second hose.

[0011] Preferably, control valves are provided at the air outlet of the pure oxygen storage tank, the air outlet of the ozone compressor, and the water outlet of the waste water delivery pump.

[0012] Preferably, the air inlet ends of the aeration heads are all communicated with external threaded pipes. Internal threaded through holes are formed on the side parts of the corresponding hollow rotating shafts of the aeration heads. The external threaded pipes are threadedly connected with the corresponding internal threaded through holes.

[0013] Preferably, an external threaded column is coaxially fixedly provided at one end of the main mesh cylinder close to the solid rotating shaft. An internal threaded blind hole is provided inside one end of the solid rotating shaft close to the main mesh cylinder. The external threaded column is threadedly connected with the corresponding internal threaded blind hole.

[0014] Preferably, a drain pipe with a drain valve is communicated with the base corresponding to the inner side of the tower body.

[0015] The beneficial effects of the present invention are as follows: When the coking wastewater is subjected to deep treatment by ozone catalytic oxidation, the coking wastewater can be conveyed to the bottom of the ozone catalytic oxidation tower through the wastewater transfer pump and the water inlet pipe, so that the wastewater flows from bottom to top. At the same time, the pure oxygen storage tank can provide the required oxygen for the ozone generator, and ozone can be prepared in cooperation. Then, the ozone is conveyed to the ozone compressor for compression to obtain high-concentration ozone, and then the high-concentration ozone can be conveyed into the sealed box through the air inlet pipe. Next, the ozone continues to be divided into each hollow rotating shaft and is then sprayed into the wastewater through the aeration heads on each hollow rotating shaft to achieve aeration mixing with the wastewater. During the process, the first motor is operated. Under the vertical meshing transmission of the first bevel gear and the second bevel gear, it can drive the four groups of hollow rotating shafts and the multiple aeration heads thereon to rotate circumferentially. This can not only make the ozone distribution more uniform when sprayed, but also stir the wastewater at the bottom, accelerate the mixing of the wastewater and ozone, and enable the wastewater and ozone to be fully mixed. At the same time, after the first motor operates, under the vertical meshing transmission of the third bevel gear and the fourth bevel gear, it can drive the crankshaft to rotate. Through the transmission of the connecting rod and the up-and-down sliding arrangement between the lifting column and the sealed box, the rotational movement of the crankshaft can be converted into the up-and-down lifting movement of the entire lifting plate and lifting column. And whenever the lifting column rises to the upper limit height, the horizontal part of the support rod will press the travel switch on the upper limit plate once. Each time the travel switch is pressed, it will feedback an electrical signal to the controller, causing the controller to automatically control the second motor to rotate forward. Whenever the lifting column descends to the lower limit height, the horizontal part of the support rod will press the travel switch on the lower limit plate once. Each time the travel switch is pressed, it will also feedback an electrical signal to the controller, causing the controller to automatically control the second motor to rotate in reverse. Whether the second motor rotates forward or in reverse, under the vertical meshing transmission of the fifth bevel gear and the sixth bevel gear, it will drive the four groups of solid rotating shafts, the main mesh cylinder, and the multiple sub-mesh cylinders on each main mesh cylinder to rotate circumferentially. With mutual cooperation, the overall lifting movement of the four groups of main mesh cylinders and the back-and-forth positive and negative rotational movements of each main mesh cylinder, such as rising and reversing, descending and rotating forward, can be realized. This can more effectively ensure the stirring range and stirring effect of the gas-liquid mixing phase of the wastewater and ozone by each group of main mesh cylinders and the multiple sub-mesh cylinders on each group of main mesh cylinders, making the mixed phases of the upper and lower layers continuously surge and generating strong turbulence. As a result, the mixed phase can more fully contact the catalyst in each main mesh cylinder and sub-mesh cylinder, and further greatly enhance the deep treatment effect of ozone catalytic oxidation on the wastewater and improve the quality of the deep treatment of ozone catalytic oxidation of the wastewater. Finally, the wastewater rising to the upper part of the tower body can be discharged to the subsequent process through the overflow pipe, and the tail gas can be discharged through the exhaust pipe; In addition, through the liftable base and its detachable connection with the tower body, when needed, the base can be lowered to drive components such as the sealed box and the lifting column to move downward out of the tower body. Then, through the detachable connection between the aeration head and the hollow rotating shaft and the detachable connection between the main mesh cylinder and the solid rotating shaft, the aeration head with problems such as blockage can be flexibly replaced, and the entire main mesh cylinder with blockage or reduced catalytic effect can be flexibly replaced, so as not to affect the smooth progress of the ozone catalytic oxidation and deep treatment operation of coking wastewater, ensure the effect of the ozone catalytic oxidation and deep treatment of coking wastewater, and make the use of the entire ozone catalytic oxidation and deep treatment device more flexible and convenient. Brief Description of the Drawings

[0016] Figure 1 is the front view structural schematic diagram of the present invention; Figure 2 is the front view structural schematic diagram of the ozone catalytic oxidation tower of the present invention; Figure 3 is the front view structural schematic diagram of the ozone catalytic oxidation tower of the present invention; Figure 4 is the top view structural schematic diagram of the tower body of the present invention; Figure 5 is the front view structural schematic diagram of the base and the mechanisms thereon of the present invention; Figure 6 is the top view structural schematic diagram of the base and the mechanisms thereon of the present invention; Figure 7 is the top view structural schematic diagram of the sealed box of the present invention; Figure 8 is the top view structural schematic diagram of the lifting column of the present invention; Figure 9 is the connection structural schematic diagram of the aeration head and the hollow rotating shaft of the present invention; Figure 10 is the connection structural schematic diagram of the main mesh cylinder and the solid rotating shaft of the present invention; Figure 11 is the installation structural schematic diagram of the limiting plate of the present invention.

[0017] Reference numerals in the figure: 1 is a pure oxygen storage tank, 2 is an ozone generator, 3 is an ozone compressor, 4 is a waste water transfer pump, 5 is an ozone catalytic oxidation tower, 6 is a tower body, 7 is an exhaust pipe, 8 is an overflow pipe, 9 is a base, 10 is a water inlet pipe, 11 is a first motor box, 12 is a sealing box, 13 is a first motor, 14 is an air inlet pipe, 15 is a hollow rotating shaft, 16 is a first bevel gear, 17 is an aeration head, 18 is a second bevel gear, 19 is a third bevel gear, 20 is a crankshaft, 21 is a fourth bevel gear, 22 is a connecting rod, 23 is a lifting plate, 24 is a lifting column, 25 is a cavity, 26 is a second motor, 27 is a fifth bevel gear, 28 is a solid rotating shaft, 29 is a sixth bevel gear, 30 is a main mesh cylinder, 31 is a support mesh cylinder, 32 is a catalyst, 33 is a support rod, 34 is a limiting plate, 35 is a travel switch, 36 is a controller, 37 is a flange, 38 is a double-rod hydraulic cylinder, 39 is a locking plate, 40 is a locking rod, 41 is a positioning through groove, 42 is a fixing plate, 43 is a fixing through hole, 44 is a sealing gasket, 45 is a single-rod hydraulic cylinder, 46 is a second motor box, 47 is a third motor, 48 is a first hose, 49 is a second hose, 50 is a control valve, 51 is an external thread pipe, 52 is an internal thread through hole, 53 is an external thread column, 54 is an internal thread blind hole, 55 is an exhaust valve, 56 is an exhaust pipe. Detailed implementation manners

[0018] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific implementation manners: As Figures 1 to 11As shown in the figure, a device for advanced treatment of coking wastewater by ozone catalytic oxidation includes a pure oxygen storage tank 1, an ozone generator 2, an ozone compressor 3, a wastewater delivery pump 4, and an ozone catalytic oxidation tower 5. The air outlet of the pure oxygen storage tank 1 is communicated with the air inlet of the ozone generator 2, and the air outlet of the ozone generator 2 is communicated with the air inlet of the ozone compressor 3. The ozone catalytic oxidation tower 5 includes a fixedly erected tower body 6. The top of the tower body 6 is communicated with an exhaust pipe 7, one side of the upper part is communicated with an overflow pipe 8, the bottom is open and is detachably connected with a liftable base 9. A water inlet pipe 10 is communicated with the base 9 inside the tower body 6. The water outlet of the wastewater delivery pump 4 is communicated with the water inlet pipe 10. A first motor box 11 is fixedly arranged at the center of the bottom of the base 9, and a sealing box 12 is fixedly arranged at the center of the top. A first motor 13 is fixedly arranged inside the first motor box 11. The output shaft of the first motor 13 penetrates upward through the base 9 and extends into the sealing box 12. An air inlet pipe 14 is communicated with the bottom of the sealing box 12. The air inlet pipe 14 penetrates through the base 9 and is communicated with the air outlet of the ozone compressor 3. Hollow rotating shafts 15 are horizontally and rotatably arranged on the front, rear, left, and right sides of the lower part of the sealing box 12. One end of each hollow rotating shaft 15 is located inside the sealing box 12, and a first bevel gear 16 is fixedly sleeved on this end. The other end is located outside the sealing box 12, and a plurality of aeration heads 17 are detachably communicated with the peripheral side of this end. A second bevel gear 18 is fixedly sleeved on the output shaft of the first motor 13 corresponding to the first bevel gear 16. The first bevel gears 16 are all vertically meshed with the second bevel gear 18. A third bevel gear 19 is fixedly sleeved on the output shaft of the first motor 13 above the second bevel gear 18. A crankshaft 20 is horizontally and rotatably arranged inside the sealing box 12 above the third bevel gear 19. A fourth bevel gear 21 is fixedly sleeved on the middle journal of the crankshaft 20. The fourth bevel gear 21 is vertically meshed with the third bevel gear 19. Two connecting rods 22 are sleeved on the equal-height two connecting rod journals at the left and right ends of the crankshaft 20. The tops of the two connecting rods 22 are hinged to the bottom of the same lifting plate 23. A lifting column 24 is vertically fixedly arranged at the center of the top of the lifting plate 23. The lifting column 24 extends out of the sealing box 12 and is slidably sleeved up and down with the top of the sealing box 12. A cavity 25 is arranged inside the lifting column 24. A second motor 26 that can rotate forward and backward is fixedly arranged inside the cavity 25. The output shaft of the second motor 26 faces upward and is fixedly sleeved with a fifth bevel gear 27. Four groups of solid rotating shafts 28 are evenly distributed on the peripheral side of the lifting column 24 corresponding to the cavity 25. The solid rotating shafts 28 are horizontally and rotatably arranged, and one end of each solid rotating shaft 28 extends into the cavity 25 and is fixedly sleeved with a sixth bevel gear 29. The other end is coaxially and detachably connected with a main mesh cylinder 30. The sixth bevel gears 29 are all vertically meshed with the fifth bevel gear 27. A plurality of branch mesh cylinders 31 are evenly distributed on the peripheral side of the main mesh cylinder 30. Catalysts 32 are filled in both the main mesh cylinder 30 and the branch mesh cylinders 31.The top end of the lifting column 24 is fixedly connected with an inverted L-shaped support rod 33. On the inner side wall of the tower body 6, two limit plates 34 are installed at intervals up and down. The distance between the two limit plates 34 is adapted to the lifting height of the lifting column 24, and travel switches 35 are arranged on the opposite sides of the two limit plates 34. The horizontal part of the support rod 33 is located between the two limit plates 34 and can press the travel switches 35. A controller 36 is fixedly installed on the outer side wall of the tower body 6. The first motor 13, the second motor 26 and the two travel switches 35 are all electrically connected to the controller 36; When the coking wastewater is subjected to advanced treatment by ozone catalytic oxidation, the coking wastewater can be transported to the bottom of the ozone catalytic oxidation tower 5 through the wastewater transfer pump 4 and the water inlet pipe 10, so that the wastewater flows from bottom to top. At the same time, the pure oxygen storage tank 1 can provide the required oxygen for the ozone generator 2 to prepare ozone in cooperation. Then, the ozone is transported to the ozone compressor 3 for compression to obtain high-concentration ozone, and then the high-concentration ozone can be transported into the sealed box 12 through the air inlet pipe 14. Next, the ozone can continue to be shunted into each hollow rotating shaft 15 and then sprayed into the wastewater through the aeration heads 17 on each hollow rotating shaft 15 to achieve aeration mixing with the wastewater. During the process, the first motor 13 is operated. Driven by the vertical meshing transmission of the first bevel gear 16 and the second bevel gear 18, the four groups of hollow rotating shafts 15 and the multiple aeration heads 17 thereon can be driven to rotate circumferentially, which can not only make the ozone distribution more uniform when spraying, but also stir the wastewater at the bottom, accelerate the mixing of the wastewater and ozone, and enable the wastewater and ozone to be fully mixed. At the same time, after the first motor 13 operates, driven by the vertical meshing transmission of the third bevel gear 19 and the fourth bevel gear 21, the crankshaft 20 can be driven to rotate. Through the transmission of the connecting rod 22 and the up-and-down sliding arrangement between the lifting column 24 and the sealed box 12, the rotational movement of the crankshaft 20 can be converted into the up-and-down lifting movement of the whole lifting plate 23 and the lifting column 24. And whenever the lifting column 24 rises to the upper limit height, the horizontal part of the support rod 33 will press the travel switch 35 on the upper limit plate 34 once. Each time the travel switch 35 is pressed, an electrical signal will be fed back to the controller 36 once, so that the controller 36 automatically controls the second motor 26 to rotate forward. Whenever the lifting column 24 descends to the lower limit height, the horizontal part of the support rod 33 will press the travel switch 35 on the lower limit plate 34 once. Each time the travel switch 35 is pressed, an electrical signal will also be fed back to the controller 36 once, so that the controller 36 automatically controls the second motor 26 to rotate in reverse. Whether the second motor 26 rotates forward or in reverse, driven by the vertical meshing transmission of the fifth bevel gear 27 and the sixth bevel gear 29, it will drive the four groups of solid rotating shafts 28, the main mesh cylinders 30 and the multiple sub-mesh cylinders 31 on each main mesh cylinder 30 to rotate circumferentially. With mutual cooperation, the overall lifting movement of the four groups of main mesh cylinders 30 and the back-and-forth positive and negative rotational movement of each main mesh cylinder 30, that is, rising and reversing, descending and rotating forward, can be realized, which can more effectively ensure the stirring range and stirring effect of the gas-liquid mixing phase of the wastewater and ozone by each group of main mesh cylinders 30 and the multiple sub-mesh cylinders 31 on each group of main mesh cylinders 30, make the mixing phases of the upper and lower layers surge continuously, and can generate strong turbulence, so that the mixing phase can contact the catalyst 32 in each main mesh cylinder 30 and sub-mesh cylinder 31 more fully, and further greatly enhance the advanced treatment effect of ozone catalytic oxidation of the wastewater and improve the quality of the advanced treatment of ozone catalytic oxidation of the wastewater. Finally, the wastewater rising to the upper part of the tower body 6 can be discharged to the subsequent process through the overflow pipe 8, and the tail gas can be discharged through the exhaust pipe 7; In addition, through the liftable base 9 and its detachable connection with the tower body 6, when needed, the components such as the sealed box 12 and the lifting column 24 can be driven by the lowering of the base 9 to move downward out of the tower body 6. Then, through the detachable connection between the aeration head 17 and the hollow rotating shaft 15 and the detachable connection between the main mesh cylinder 30 and the solid rotating shaft 28, the aeration head 17 with problems such as blockage can be flexibly replaced, and the entire main mesh cylinder 30 with blockage or reduced catalytic effect can be flexibly replaced, so as not to affect the smooth progress of the ozone catalytic oxidation and deep treatment operation of coking wastewater, ensure the effect of the ozone catalytic oxidation and deep treatment of coking wastewater, and make the use of the entire ozone catalytic oxidation and deep treatment device more flexible and convenient. The pure oxygen storage tank 1, the ozone generator 2, the ozone compressor 3, the wastewater delivery pump 4, the first motor 13, the first bevel gear 16, the aeration head 17, the second bevel gear 18, the third bevel gear 19, the crankshaft 20, the fourth bevel gear 21, the second motor 26 that can rotate forward and backward, the fifth bevel gear 27, the sixth bevel gear 29, the catalyst 32, the travel switch 35, and the controller 36 can all adopt existing technologies, and the specific structures and working principles of the corresponding components will not be elaborated here.

[0019] In this embodiment, a flange 37 is fixedly provided on the circumferential side of the bottom of the tower body 6. Four groups of double-rod hydraulic cylinders 38 are evenly distributed at intervals in a circumferential manner on the top of the flange 37. The double-rod hydraulic cylinders 38 are horizontally arranged, and the tail ends of the two piston rods of each double-rod hydraulic cylinder 38 are fixedly connected with a locking plate 39. A plurality of locking rods 40 distributed in a rectangular array are fixedly provided on the side of each locking plate 39 facing away from the other. Positioning through grooves 41 are opened on the flange 37 on the side of each locking plate 39 facing away from the other. Fixed plates 42 are fixedly provided on the base 9 corresponding to the positioning through grooves 41. A plurality of fixing through holes 43 are opened on the fixed plates 42. The base 9 abuts against the flange 37. The fixed plates 42 are inserted through the corresponding positioning through grooves 41. The locking plates 39 abut against the fixed plates 42 on the same side, and the locking rods 40 on the locking plates 39 correspond to and are inserted through the fixing through holes 43 on the corresponding fixed plates 42 one by one; When it is necessary to separate the base 9 from the tower body 6, only four groups of double-rod hydraulic cylinders 38 need to be operated to contract their piston rods, driving the locking plate 39 to retract until the locking rod 40 exits from the corresponding fixed through hole 43, thus releasing the pressing and plug-in locking of the fixed plate 42. Then, by moving the entire base 9 downward, the separation of the base 9 from the tower body 6 can be achieved. When it is necessary to connect the base 9 to the tower body 5, only need to first move the entire base 9 upward until the base 9 abuts against the bottom and the flange 37 of the tower body 6, and align the fixed plate 42 with the corresponding positioning through slot 41 and insert it through in place. Then, operate each double-rod hydraulic cylinder 38 again to extend its piston rod, driving the locking plate 39 to move towards the corresponding fixed plate 42 until the locking plate 39 presses against the corresponding fixed plate 42. At this time, the locking rod 40 can be inserted through and plugged in the corresponding fixed through hole 43 to press and plug-in lock the fixed plate 42, thus completing the fixed installation between the base 9 and the tower body 6, and the installation is firm without affecting subsequent use. In this way, the quick and flexible connection and separation between the base 9 and the tower body 6 can be realized, so that the flexible replacement of the aeration head 17 and the catalyst 32 can be achieved when needed, without affecting the smooth progress of the ozone catalytic oxidation and deep treatment operation of coking wastewater, ensuring the effect of the ozone catalytic oxidation and deep treatment of coking wastewater, and making the use of the entire ozone catalytic oxidation and deep treatment device more flexible and convenient.

[0020] In this embodiment, sealing gaskets 44 are fixedly provided on the top of the base 9 and the bottom of the flange 37 to improve the sealing performance at the connection between the base 9 and the tower body 6, avoid problems such as water leakage and air leakage, and ensure the smooth progress of the deep treatment operation of coking wastewater.

[0021] In this embodiment, single-rod hydraulic cylinders 45 are vertically and fixedly provided below both the left and right sides of the base 9. The piston rods of the single-rod hydraulic cylinders 45 face upward and are fixedly connected to the bottom of the base 9. When the separation operation between the base 9 and the tower body 6 is completed, the contraction of the piston rods of the single-rod hydraulic cylinders 45 can be used to drive the entire base 9 to descend to cooperate with the replacement operation of the aeration head 17 or the catalyst 32. After that, when it is necessary to reinstall the base 9 onto the tower body 6, only need to operate the single-rod hydraulic cylinders 45 again to extend their piston rods, which can drive the base 9 to move upward as a whole until the base 9 abuts against the bottom and the flange 37 of the tower body 6, and then complete the fixed installation between the base 9 and the tower body 6 according to the foregoing steps, and the operation is more simple and labor-saving.

[0022] In the present embodiment, a second motor box 46 is fixedly provided on the inner wall of the tower body 6 corresponding to the limit plate 34, and a third motor 47 is provided in the second motor box 46. The output shaft of the third motor 47 extends upward from the second motor box 46 and is fixedly sleeved with one end of the two limit plates 34 away from the lifting column 24. The travel switch 35 is arranged on one end of the limit plate 34 close to the lifting column 24, so that when the ozone catalytic oxidation tower 5 is working, the two limit plates 34 can be driven to rotate by the operation of the third motor 47, and the direction of the two limit plates 34 can be flexibly adjusted, so that one end of the limit plate 34 where the travel switch 35 is located faces the support rod 33, so that the support rod 33 can be smoothly pressed to the travel switch 35 on the two limit plates 34 when it is synchronously lifted and lowered with the lifting column 24, thereby ensuring the smooth progress of the corresponding operation. When the base 9 needs to be moved downward as a whole, the third motor 47 can be operated again to drive the two limit plates 34 to rotate as a whole by a certain angle, so that they are staggered with the support rod 33, thereby not affecting the overall downward movement of the support rod 33 with the base 9, and ensuring the smooth replacement of the aeration head 17 and the catalyst 32. The travel switch 35 can adopt an existing conventional waterproof travel switch, and the third motor 47 can adopt an existing conventional stepping motor with a brake function, so as to realize the rotation of a specified angle and the position locking after the rotation is in place.

[0023] In this embodiment, the water outlet of the wastewater delivery pump 4 is connected to the water inlet pipe 10 through the first hose 48, and the air outlet of the ozone compressor 3 is connected to the air inlet pipe 14 through the second hose 49, which can ensure smooth water and air intake without affecting the lifting operation of the base 9.

[0024] In this embodiment, control valves 50 are provided at the air outlet of the pure oxygen storage tank 1, the air outlet of the ozone compressor 3 and the water outlet of the wastewater delivery pump 4 to control and adjust the operating conditions of the entire deep treatment system according to actual working conditions.

[0025] In this embodiment, the air inlet end of the aeration head 17 is connected to an external threaded tube 51, and the side of the hollow rotating shaft 15 corresponding to the aeration head 17 is provided with an internal threaded through hole 52. The external threaded tube 51 is threadedly connected to the corresponding internal threaded through hole 52, so that the aeration head 17 and the hollow rotating shaft 15 can be flexibly disassembled and assembled, thereby realizing flexible and quick replacement of the aeration head 17.

[0026] In this embodiment, an external threaded column 53 is coaxially fixed to one end of the main mesh cylinder 30 close to the solid rotating shaft 28, and an internal threaded blind hole 54 is provided inside the end of the solid rotating shaft 28 close to the main mesh cylinder 30. The external threaded column 53 is threadedly connected with the corresponding internal threaded blind hole 54, so that the main mesh cylinder 30 and the solid rotating shaft 28 can be flexibly disassembled and assembled, thereby realizing flexible and quick replacement of the catalyst 32.

[0027] In this embodiment, an emptying pipe 56 with an emptying valve 55 is connected to the corresponding base 9 inside the tower body 6, so as to empty the tower body 6 after shutdown, without affecting operations such as the replacement of the aeration head 17 and the catalyst 32.

[0028] The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims

1. A coking wastewater ozone catalytic oxidation deep treatment device, comprising a pure oxygen storage tank, an ozone generator, an ozone compressor, a wastewater delivery pump and an ozone catalytic oxidation tower, wherein the air outlet of the pure oxygen storage tank is connected to the air inlet of the ozone generator, and the air outlet of the ozone generator is connected to the air inlet of the ozone compressor, characterized in that: The ozone catalytic oxidation tower comprises a fixedly erected tower body, the top of the tower body is connected with an exhaust pipe, one side of the upper part is connected with an overflow pipe, the bottom is open and detachably connected with a liftable base, the base inside the tower body is connected with an inlet pipe, the outlet of the wastewater delivery pump is connected with the inlet pipe, a first motor box is fixedly arranged at the bottom center of the base, a sealing box is fixedly arranged at the top center, a first motor is fixedly arranged in the first motor box, the output shaft of the first motor passes through the base upward and extends into the sealing box, the bottom of the sealing box is connected with an air inlet pipe, the air inlet pipe passes through the base and is connected with the air outlet of the ozone compressor, the front and rear parts of the lower part of the sealing box are fixedly arranged with a ... sealing box are fixedly arranged with a first motor box, the output shaft of the first motor passes through the base upward and extends into the sealing box A hollow rotating shaft is horizontally and rotatably provided on the four side parts on the left and right sides, one end of the hollow rotating shaft is located in the sealing box and a first bevel gear is fixedly provided on the end, the other end is located outside the sealing box and a plurality of aeration heads are detachably connected on the peripheral side of the end, a second bevel gear is fixedly provided on the output shaft of the first motor corresponding to the first bevel gear, the first bevel gear is vertically meshed with the second bevel gear, a third bevel gear is fixedly provided on the output shaft of the first motor above the second bevel gear, a crankshaft is horizontally and rotatably provided in the sealing box above the third bevel gear, a fourth bevel gear is fixedly provided on the middle journal of the crankshaft, the fourth bevel gear is meshed with the third bevel gear The gears are vertically meshed, and connecting rods are sleeved on two connecting rod journals of equal height on the left and right ends of the crankshaft. The top ends of the two connecting rods are hinged to the bottom of the same lifting plate. A lifting column is vertically fixed to the top center of the lifting plate. The lifting column extends out of the sealing box and is slidably sleeved up and down with the top of the sealing box. A cavity is provided in the lifting column, and a second motor that can be reversible is fixed in the cavity. The output shaft of the second motor faces upward and is fixedly sleeved with a fifth bevel gear. Four groups of solid rotating shafts are evenly distributed on the circumference of the lifting column corresponding to the cavity. The solid rotating shaft is horizontally and rotatably arranged, and one end of the solid rotating shaft extends into the cavity and is fixedly sleeved with a sixth bevel gear, and the other end is coaxial and detachably connected. It is connected to a main net cylinder, the sixth bevel gear is vertically meshed with the fifth bevel gear, a number of branch net cylinders are evenly distributed on the circumference of the main net cylinder, the main net cylinder and the branch net cylinders are filled with catalysts, the top of the lifting column is fixedly connected with an inverted L-shaped support rod, two limit plates with upper and lower intervals are installed on the inner wall of the tower body, the distance between the two limit plates is adapted to the lifting height of the lifting column and travel switches are provided on the opposite sides of the two limit plates, the horizontal part of the support rod is located between the two limit plates and can be pressed to the travel switch, a controller is fixedly provided on the outer wall of the tower body, and the first motor, the second motor and the two travel switches are electrically connected to the controller.

2. The coking wastewater ozone catalytic oxidation deep treatment device according to claim 1 is characterized in that: A flange is fixedly provided on the circumferential side of the bottom of the tower body, and four groups of double-rod hydraulic cylinders are evenly distributed at circumferential intervals on the top of the flange. The double-rod hydraulic cylinder is horizontally arranged and the tail ends of its two piston rods are fixedly connected to locking plates, and a plurality of locking rods distributed in a rectangular array are fixedly provided on the opposite sides of the two locking plates, and positioning grooves are provided on the flanges on the opposite sides of the two locking plates. A fixing plate is fixedly provided on the base corresponding to the positioning grooves, and a plurality of fixing through holes are provided on the fixing plate, the base abuts against the flange, and the fixing plate is penetrated and plugged into the corresponding positioning through grooves, and the locking plate abuts against the fixing plate on the same side, and the locking rods thereon correspond one-to-one with and are penetrated and plugged into the fixing through holes on the corresponding fixing plate.

3. The coking wastewater ozone catalytic oxidation deep treatment device according to claim 2 is characterized in that: A sealing gasket is fixedly arranged on the top of the base and the bottom of the flange.

4. The coking wastewater ozone catalytic oxidation deep treatment device according to claim 1 is characterized in that: Single-rod hydraulic cylinders are vertically fixedly arranged below the left and right sides of the base, and the piston rods of the single-rod hydraulic cylinders face upward and are fixedly connected to the bottom of the base.

5. The coking wastewater ozone catalytic oxidation deep treatment device according to claim 1 is characterized in that: A second motor box is fixedly arranged on the inner wall of the tower body corresponding to the limit plate, and a third motor is arranged in the second motor box. The output shaft of the third motor extends upwardly out of the second motor box and is fixedly sleeved with one end of the two limit plates away from the lifting column, and the travel switch is arranged on one end of the limit plate close to the lifting column.

6. The coking wastewater ozone catalytic oxidation deep treatment device according to claim 1 is characterized in that: The water outlet of the wastewater delivery pump is communicated with the water inlet pipe through a first hose, and the air outlet of the ozone compressor is communicated with the air inlet pipe through a second hose.

7. The coking wastewater ozone catalytic oxidation deep treatment device according to claim 1 is characterized in that: Control valves are arranged at the air outlet of the pure oxygen storage tank, the air outlet of the ozone compressor and the water outlet of the wastewater delivery pump.

8. The coking wastewater ozone catalytic oxidation deep treatment device according to claim 1 is characterized in that: The air inlet ends of the aeration heads are connected with external threaded pipes, and the sides of the hollow rotating shafts corresponding to the aeration heads are provided with internal threaded through holes, and the external threaded pipes are threadedly connected with the corresponding internal threaded through holes.

9. The coking wastewater ozone catalytic oxidation deep treatment device according to claim 1 is characterized in that: An external threaded column is coaxially fixed to one end of the main net cylinder close to the solid shaft, an internal threaded blind hole is arranged inside one end of the solid shaft close to the main net cylinder, and the external threaded column is threadedly connected with the corresponding internal threaded blind hole.

10. The coking wastewater ozone catalytic oxidation deep treatment device according to claim 1, characterized in that: A drain pipe with a drain valve is connected to the base corresponding to the inner side of the tower body.

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