Catalytic ozonation tower for advanced treatment of coking wastewater
By designing a serpentine channel and multiple aeration mixing in the ozone catalytic oxidation tower, the problem of insufficient mixing between ozone and wastewater was solved, the deep treatment effect of coking wastewater was improved, and the equipment was made easier to replace and maintain.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-27
- Publication Date
- 2026-04-03
AI Technical Summary
In existing ozone catalytic oxidation towers, ozone and wastewater are not mixed sufficiently, and the wastewater passes through the catalyst layer at a fast rate, resulting in low oxidation catalytic quality.
Design an ozone catalytic oxidation tower comprising an upper tower section and a lower tower section. The lower tower section is equipped with multiple baffles and aeration heads to form a serpentine channel. Wastewater flows from bottom to top, undergoes multiple aerations to mix and contact the catalyst, and is then subjected to deep treatment in conjunction with the catalyst layer.
This process achieves thorough mixing and multiple contacts between wastewater and ozone, improving the quality of deep treatment of coking wastewater and facilitating flexible equipment replacement and maintenance.
Smart Images
Figure CN224077150U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of coking wastewater treatment technology, specifically relating to an ozone catalytic oxidation tower for deep treatment of coking wastewater. Background Technology
[0002] Currently, advanced treatment methods for coking wastewater mainly include coagulation sedimentation, membrane separation, biological treatment, and advanced oxidation processes. Advanced oxidation processes further include Fenton oxidation, ozone oxidation, electrochemical oxidation, photocatalytic oxidation, and ultrasonic oxidation. Among these, ozone oxidation primarily utilizes the strong oxidizing properties of ozone to remove organic pollutants from water, characterized by rapid reaction, thorough treatment, and no secondary pollution.
[0003] When treating coking wastewater using ozone oxidation, an ozone catalytic oxidation tower is required. A conventional ozone catalytic oxidation tower typically consists of an aeration device at the bottom and two sets of perforated baffles at the top, with catalyst filling the space between the baffles. During operation, ozone and wastewater enter from the bottom and mix. As the wastewater level rises, the gas-liquid mixture flows upwards through the catalyst layer, further enhancing the ozone oxidation effect through the catalyst's catalytic action. This results in high-quality, deep treatment of the wastewater. The wastewater at the top is discharged through an overflow pipe, and excess ozone is discharged through an exhaust pipe. However, in practical applications, the mixing effect of only one aeration device at the bottom is insufficient. The ozone and wastewater may not mix sufficiently, and the wastewater rises rapidly through the catalyst layer, resulting in inadequate contact between the wastewater and catalyst. Consequently, the overall oxidation catalytic quality is not high and requires improvement. Utility Model Content
[0004] In view of this, the purpose of this utility model is to provide an ozone catalytic oxidation tower for the deep treatment of coking wastewater, which can realize multiple aeration mixing and catalytic oxidation of wastewater to solve the above problems.
[0005] To achieve the above objectives, the technical solution adopted by this utility model is: an ozone catalytic oxidation tower for deep treatment of coking wastewater, comprising an upper tower section and a lower tower section. Both the upper and lower tower sections have square cross-sections, with the upper tower section fixedly mounted above the lower tower section. The top of the upper tower section is closed and connected to an exhaust pipe, an overflow pipe is connected to the upper side of one side, and the bottom is open. The top of the lower tower section is open and detachably connected to the bottom of the upper tower section. Several partitions are distributed vertically within the lower tower section. One end of each partition is fixedly connected to the inner wall of the corresponding lower tower section, and a gap is left between the other end and the inner wall of the corresponding lower tower section. Adjacent partitions... The fixed ends of the partitions are opposite, and each partition has an ozone channel inside its fixed end. An air inlet pipe is fixed on both the left and right outer sides of the lower tower section. The two air inlet pipes are connected through a conveying pipeline, and one of the air inlet pipes is equipped with a first quick connector. One end of each ozone channel is connected to an adjacent air inlet pipe through an air inlet branch pipe, and the other end faces downward and is connected to an aeration head fixed on the bottom of the corresponding partition. Two vertically fixed perforated plates are distributed between the aeration head and the free end of the corresponding partition. The space between the two perforated plates is filled with catalyst. The bottom of the lower tower section corresponding to the fixed end of the lowest partition is connected to a water inlet pipe, and the water inlet pipe is equipped with a second quick connector.
[0006] Preferably, hydraulic cylinders are vertically installed at the four corners of the bottom of the lower tower section. The piston rods of the hydraulic cylinders face upward and are fixedly connected to the lower tower section. Casters are connected to the bottom of the cylinder bodies of the hydraulic cylinders. A square lower flange is fixedly installed on the top periphery of the lower tower section. Fixing plates are vertically fixed on the left and right sides of the top of the lower flange. Several fixing through holes are opened on the fixing plates in a rectangular array. A square upper flange is fixedly installed on the bottom periphery of the upper tower section. Positioning through grooves are opened on the left and right sides of the upper flange. The left and right outer walls of the upper tower section above the upper flange are... An electric push rod is horizontally fixed. The telescopic ends of the two electric push rods are set opposite each other and are fixedly connected to locking plates. Several locking rods are fixed on the opposite side of the two locking plates. Under the action of the piston rod of the hydraulic cylinder extending, the top of the lower tower section can abut against the bottom of the lower tower section, and the top of the lower flange can abut against the bottom of the upper flange. The fixing plate can be inserted through the positioning through slot on the same side. Under the action of the telescopic end of the electric push rod extending, the locking plate can abut against the fixing plate on the same side, and the locking rod on it corresponds one-to-one with the fixing through hole on the corresponding fixing plate and is inserted through.
[0007] Preferably, the lower flange is adapted to the upper flange, the fixing plate is adapted to the corresponding positioning through groove, and the locking rod is adapted to the corresponding fixing through hole.
[0008] Preferably, both the top of the lower flange and the bottom of the upper flange are provided with sealing gaskets.
[0009] Preferably, a mobile power supply and a controller are provided on the outer wall of the lower tower section, and the hydraulic cylinder is electrically connected to the mobile power supply through the controller.
[0010] Preferably, the bottom of the lower tower section is connected to a vent pipe with a vent valve.
[0011] The beneficial effects of this invention are as follows: In use, the inlet pipe can be quickly connected to the ozone supply pipe via the first quick connector, and the water inlet pipe can be quickly connected to the coking wastewater supply pipe via the second quick connector. Then, the coking wastewater can be transported to the bottom of the lower tower section via the water supply pipe and the inlet pipe. The cooperation of multiple baffles in the lower tower section forms a serpentine channel, allowing the wastewater entering the bottom of the lower tower section to flow upwards in a serpentine manner. This effectively prolongs the residence time of the wastewater in the lower tower section, which is more conducive to the thorough mixing and contact of the wastewater with ozone and catalyst, and better ensures the quality of deep treatment of the wastewater. During wastewater flow, ozone is transported and distributed to the ozone channels of each baffle via a gas pipeline, two inlet pipes, and multiple branch pipes connected to the two inlet pipes. The ozone is then sprayed into the wastewater through aeration heads at the bottom of each baffle. This allows for multiple effective aeration and mixing of wastewater and ozone during the wastewater flow, ensuring thorough mixing. Simultaneously, after each aeration and mixing with ozone at an aeration head, the wastewater flows through a catalyst layer consisting of two perforated plates filled between them. This ensures timely contact between the wastewater and the catalyst, facilitating deep catalytic oxidation treatment. The multiple contacts between wastewater and catalyst during flow, combined with the repeated aeration and mixing of wastewater and ozone, significantly enhance the effectiveness of deep catalytic oxidation treatment and improve the quality of wastewater treatment. Finally, the wastewater that rises to the upper tower section can be discharged to the subsequent process through the overflow pipe, and the exhaust gas can be discharged through the exhaust pipe.
[0012] Furthermore, the detachable connection between the upper and lower tower sections, along with the cooperation of the first and second quick-connect couplings, allows for convenient disassembly and assembly of the entire lower tower section. This facilitates flexible replacement of the entire lower tower section when blockages occur at the aeration head or catalyst, or when catalyst replacement is required. This is more conducive to the smooth operation of ozone catalytic oxidation deep treatment of coking wastewater and ensures the quality of the corresponding work. As a result, the entire ozone catalytic oxidation tower equipment is more flexible, convenient, and practical to use. Attached Figure Description
[0013] Figure 1 This is a schematic diagram of the main structure of this utility model;
[0014] Figure 2 This is a schematic diagram of the main structure of the upper tower section of this utility model;
[0015] Figure 3 This is a top view of the upper tower section of this utility model.
[0016] Figure 4 This is a schematic diagram of the main structure of the lower tower section of this utility model;
[0017] Figure 5 This is a schematic diagram of the main structure at the connection between the upper and lower tower sections of this utility model.
[0018] The diagram is labeled as follows: 1 is the upper tower section, 2 is the lower tower section, 3 is the exhaust pipe, 4 is the overflow pipe, 5 is the baffle plate, 6 is the ozone channel, 7 is the air inlet pipe, 8 is the delivery pipeline, 9 is the first quick connector, 10 is the air inlet branch pipe, 11 is the aeration head, 12 is the mesh plate, 13 is the catalyst, 14 is the water inlet pipe, 15 is the second quick connector, 16 is the hydraulic cylinder, 17 is the caster, 18 is the lower flange, 19 is the fixing plate, 20 is the fixing through hole, 21 is the upper flange, 22 is the positioning through groove, 23 is the electric push rod, 24 is the locking plate, 25 is the locking rod, 26 is the sealing gasket, 27 is the mobile power supply, 28 is the controller, 29 is the vent valve, and 30 is the vent pipe. Detailed Implementation
[0019] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments:
[0020] like Figures 1 to 5 As shown, an ozone catalytic oxidation tower for deep treatment of coking wastewater includes an upper tower section 1 and a lower tower section 2. Both the upper tower section 1 and the lower tower section 2 have square cross-sections, with the upper tower section 1 fixedly mounted above the lower tower section 2. The top of the upper tower section 1 is closed and connected to an exhaust pipe 3, an overflow pipe 4 is connected to the upper side, and the bottom is open. The top of the lower tower section 2 is open and detachably connected to the bottom of the upper tower section 1. The lower tower section 2 has several partitions 5 arranged vertically at intervals. One end of each partition 5 is fixedly connected to the inner wall of the corresponding lower tower section 2, and the other end is separated from the inner wall of the corresponding lower tower section 2. The fixed ends of adjacent partitions 5 are opposite, and each partition 5 has an ozone channel 6 inside its fixed end. Air inlet pipes 7 are fixedly installed on the left and right outer sides of the lower tower section 2. The two air inlet pipes 7 are connected through a conveying pipe 8, and one of the air inlet pipes 7 is equipped with a first quick connector 9. One end of each ozone channel 6 is connected to the adjacent air inlet pipe 7 through an air inlet branch pipe 10, and the other end faces downward and is connected to an aeration head 11 fixed at the bottom of the corresponding partition 5. Two vertically fixed perforated plates 12 are arranged at intervals between the aeration head 11 and the free end of the corresponding partition 5. The space between the two perforated plates 12 is filled with catalyst 13. The bottom of the lower tower section 2 corresponding to the fixed end of the lowest partition 5 is connected to a water inlet pipe 14, and the water inlet pipe 14 is equipped with a second quick connector 15.
[0021] In use, the inlet pipe 7 can be quickly connected to the ozone gas supply pipeline (not shown in the figure) via the first quick connector 9, and the water inlet pipe 14 can be quickly connected to the coking wastewater supply pipeline (not shown in the figure) via the second quick connector 15. Then, the coking wastewater can be transported to the bottom of the lower tower section 2 via the water supply pipeline and the water inlet pipe 14. The cooperation of the multiple baffles 5 in the lower tower section 2 can form a serpentine channel, allowing the wastewater entering the bottom of the lower tower section 2 to flow upward in a serpentine manner. This effectively prolongs the residence time of the wastewater in the lower tower section 2, which is more conducive to the full mixing and contact of the wastewater with ozone and catalyst, and better ensures the quality of deep treatment of wastewater. During the wastewater flow, ozone is transported and distributed to the ozone channels 6 of each partition 5 via the gas pipeline, two air inlets 7, and multiple air inlet branch pipes 10 connected to the two air inlets 7. The ozone is then sprayed into the wastewater through the aeration heads 11 at the bottom of each partition 5. This allows for multiple effective aeration and mixing of wastewater and ozone during the wastewater flow, ensuring thorough mixing. Simultaneously, after each aeration and mixing with ozone at each aeration head 11, the wastewater flows through a catalyst layer consisting of two perforated plates 12 and a catalyst 13 filled between them. This allows the wastewater to contact the catalyst 13 promptly, achieving deep catalytic oxidation treatment of the wastewater. Furthermore, this multiple contact between wastewater and catalyst during the flow, combined with the multiple aeration and mixing of wastewater and ozone, significantly enhances the effect of deep catalytic oxidation treatment of the wastewater, improving the quality of the wastewater treatment. Finally, the wastewater that rises to the upper tower section 1 can be discharged to the subsequent process through the overflow pipe 4, and the exhaust gas can be discharged through the exhaust pipe 3.
[0022] Furthermore, the detachable connection between the upper tower section 1 and the lower tower section 2, along with the cooperation of the first quick connector 9 and the second quick connector 15, allows for convenient disassembly and assembly of the entire lower tower section 2. This facilitates flexible replacement of the entire lower tower section 2 when blockages occur at the aeration head 11 or catalyst 13, or when catalyst 13 needs to be replaced. This is more conducive to the smooth operation of ozone catalytic oxidation deep treatment of coking wastewater and ensures the corresponding operational quality, making the entire ozone catalytic oxidation tower equipment more flexible, convenient, and practical.
[0023] In this embodiment, hydraulic cylinders 16 are vertically installed at the four corners of the bottom of the lower tower section 2. The piston rods of the hydraulic cylinders 16 face upward and are fixedly connected to the lower tower section 2. Casters 17 are connected to the bottom of the cylinder body of the hydraulic cylinders 16. A square lower flange 18 is fixedly installed on the top periphery of the lower tower section 2. Fixing plates 19 are vertically fixed on the left and right sides of the top of the lower flange 18. Several fixing through holes 20 arranged in a rectangular array are opened on the fixing plates 19. A square upper flange 21 is fixedly installed on the bottom periphery of the upper tower section 1. Positioning through grooves 22 are opened on the left and right sides of the upper flange 21. Electric push rods 23 are horizontally fixed on the left and right outer walls of the upper tower section 1 above the upper flange 21. The telescopic ends of the two electric push rods 23 are arranged opposite to each other and are fixedly connected to locking plates 24. Several locking rods 25 are fixed on the opposite side of the two locking plates 24. Driven by the extension of the piston rod of the hydraulic cylinder 16, the top of the lower tower section 2 can abut against the bottom of the lower tower section 1, the top of the lower flange 18 can abut against the bottom of the upper flange 21, the fixing plate 19 can be inserted through the positioning through groove 22 on the same side, and driven by the extension of the telescopic end of the electric push rod 23, the locking plate 24 can abut against the fixing plate 19 on the same side, and the locking rod 25 on it corresponds one-to-one with the fixing through hole 20 on the corresponding fixing plate 19 and is inserted through.
[0024] This design allows for easy replacement of the lower tower section 2 during operation. If the lower tower section 2 needs replacement due to blockages in the aeration head 11 or catalyst 13, or if the catalyst 13 requires replacement, the system can be shut down by first disconnecting the lower tower section 2 from the corresponding gas and water pipelines via the first quick connector 9 and the second quick connector 15. Then, the two electric push rods 23 are operated to retract their telescopic ends, causing the locking plate 24 to retract until the locking rod 25 exits from the corresponding fixing through hole 20, thus releasing the pressure and locking of the fixing plate 19. Next, the hydraulic cylinder 16 is operated to retract its piston rod, moving the entire lower tower section 2 downwards until the fixing plate 19 exits from the corresponding positioning through slot 22, completing the disassembly of the original lower tower section 2. Finally, with the assistance of four sets of casters 17, the original lower tower section 2 can be quickly moved away from below the upper tower section 1. Next, take another new lower tower section 2. First, use the casters 17 on this lower tower section 2 to quickly move it above the upper tower section 1, aligning the fixing plate 19 with the corresponding positioning slot 22. Then, operate the hydraulic cylinder 16 to extend its piston rod, causing the lower tower section 2 to rise until the lower flange 18 abuts against the upper flange 21 and the fixing plate 19 is inserted into the corresponding positioning slot 22. Afterward, operate the two electric push rods 23 again to extend their telescopic ends, moving the locking plate 24 towards the corresponding fixing plate 19 until the locking plate 24 presses against the corresponding fixing plate 19. At this point, the locking rod 25 can be inserted through the corresponding fixing through hole 20, thus pressing and locking the fixing plate 19 in place. This completes the secure installation of the new lower tower section 2, ensuring a stable installation without affecting subsequent use. Finally, connect the new lower tower section 2 to the corresponding gas and water pipelines using the first quick connector 9 and the second quick connector 15, and it can then be used again. This allows for quick assembly and disassembly of the lower tower section 2, facilitating flexible replacement of the entire section when problems arise with the aeration head 11 or catalyst 13. It also ensures effective deep treatment of coking wastewater, making the overall system more flexible, convenient, and practical. Both the first quick connector 9 and the second quick connector 15 utilize existing technology, typically including a male and a female connector. In use, simply pre-install the male or female connector on the air inlet pipe 7 and water inlet pipe 14, and then pre-install the corresponding female or male connector on the corresponding air and water supply lines. The corresponding air and water supply lines can be flexible hoses to facilitate the connection and disconnection of the male and female connectors.
[0025] In this embodiment, the lower flange 18 is adapted to the upper flange 21, the fixing plate 19 is adapted to the corresponding positioning through groove 22, and the locking rod 25 is adapted to the corresponding fixing through hole 20, so as to ensure smooth fixed docking and fixed installation between the upper tower section 1 and the lower tower section 2.
[0026] In this embodiment, sealing gaskets 26 are provided at the top of the lower flange 18 and the bottom of the upper flange 21 to ensure the sealing of the connection between the upper tower section 1 and the lower tower section 2, prevent water and air leakage, and ensure the smooth progress of the deep treatment operation of coking wastewater.
[0027] In this embodiment, a mobile power supply 27 and a controller 28 are provided on the outer wall of the lower tower section 2. The hydraulic cylinder 16 is electrically connected to the mobile power supply 27 through the controller 28, so that in actual use, the mobile power supply 27 can provide energy to the hydraulic cylinder 16, and the controller 28 can control the movement of the hydraulic cylinder 16 to achieve the corresponding operation. This also makes the entire lower tower section 2 independent, making it easier to replace and more practical. The mobile power supply 27 and the controller 28 can both adopt existing technologies, and their specific models and working principles will not be detailed here.
[0028] In this embodiment, the bottom of the lower tower section 2 is connected to an vent pipe 30 with a vent valve 29, so that the lower tower section 2 can be vented after shutdown without affecting the maintenance or replacement of the lower tower section 2.
[0029] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. An ozone catalytic oxidation tower for advanced treatment of coking wastewater, characterized in that, The utility model provides a square tower column, including upper tower section and lower tower section, the cross section of upper tower section and lower tower section are square and upper tower section is fixed and is erected in the upper of lower tower section, the top of upper tower section is closed and is communicated with exhaust pipe, one side upper portion is communicated with overflow pipe, the bottom is open, the top of lower tower section is open and is detachable with the bottom of upper tower section, the inside of lower tower section is spaced apart and is distributed with a plurality of baffle upwards and downwards, the fixed end of baffle is fixedly connected with the corresponding inside wall of lower tower section in one end, and the other end is left with a gap between the corresponding inside wall of lower tower section, the fixed end of adjacent two baffles is opposite and is equipped with ozone channel in the fixed end of each baffle, the left and right two outside of lower tower section all are solidly provided with inlet pipe, and two inlet pipes are communicated through the conveying pipeline, and the first quick -operation joint is equipped in one inlet pipe, one end of ozone channel is communicated with adjacent inlet pipe through inlet branch pipe, and the other end is downward and is communicated with aeration head fixedly arranged on the bottom of corresponding baffle, two vertically solidly arranged mesh plates are spaced apart and are distributed between the aeration head and the free end of corresponding baffle, and the mesh plate between two is filled with catalyst, and the fixed end of the lowest layer baffle is communicated with inlet pipe with the bottom of corresponding lower tower section, and the second quick -operation joint is equipped on the inlet pipe.
2. The ozone catalytic oxidation tower for the advanced treatment of coking wastewater according to claim 1, characterized in that, The bottom four corners of the outer wall of the lower tower section are vertically provided with hydraulic cylinders, the piston rods of the hydraulic cylinders are upward and fixedly connected with the lower tower section, the cylinder bodies of the hydraulic cylinders are connected with casters at the bottom, the top of the square lower flange is fixedly provided on the top of the square lower flange, the left and right sides of the top of the square lower flange are vertically fixedly provided with fixed plates, a plurality of rectangular array distributed fixed through holes are formed in the fixed plates, the bottom of the square upper flange is fixedly provided with a square upper flange, the left and right sides of the square upper flange are provided with positioning through grooves, the left and right outer side walls of the upper tower section above the square upper flange are horizontally fixedly provided with electric push rods, the extension ends of the two electric push rods are oppositely arranged and fixedly connected with locking plates, a plurality of locking rods are fixedly provided on the side of the locking plate opposite to the extension end, under the driving of the piston rod of the hydraulic cylinder, the top of the lower tower section can abut on the bottom of the lower tower section, the top of the square lower flange can abut on the bottom of the square upper flange, the fixed plates can be inserted through the same side positioning through grooves, under the extension of the extension end of the electric push rod, the locking plate can abut on the same side fixed plate, and the locking rods on the locking plate are inserted through the fixed through holes on the corresponding fixed plate one by one.
3. The ozone catalytic oxidation tower for the advanced treatment of coking wastewater according to claim 2, characterized in that, The square lower flange is matched with the square upper flange, the fixed plates are matched with the corresponding positioning through grooves, and the locking rods are matched with the corresponding fixed through holes.
4. The ozone catalytic oxidation tower for the advanced treatment of coking wastewater according to claim 2, characterized in that, The top of the square lower flange and the bottom of the square upper flange are provided with sealing pads.
5. The ozone catalytic oxidation tower for the advanced treatment of coking wastewater according to claim 2, characterized in that, The outer wall of the lower tower section is provided with a mobile power supply and a controller, and the hydraulic cylinders are electrically connected with the mobile power supply through the controller.
6. The ozone catalytic oxidation tower for the advanced treatment of coking wastewater according to claim 1, characterized in that, The bottom of the lower tower section is communicated with an emptying pipe with an emptying valve.