A micro-nano bubble oxidation tower can be applied to waste gas treatment and water treatment

Abstract

The utility model discloses a can be applied to waste gas treatment and water treatment's micro nano bubble oxidation tower, including oxidation tower main part, the oxidation tower main part top outer wall is fixed with conical cover through bolt, the conical cover top welds and has the exhaust pipe, the oxidation tower main part side welds and has the air inlet pipe, the oxidation tower main part side is equipped with the spray pipe, the spray pipe bottom is fixed with the spray tray through the joint, the spray tray bottom is equipped with the nozzle, the spray pipe is connected with micro nano bubble generating subassembly away from the spray tray one end, the oxidation tower main part circumference inner wall is fixed with the net board. The utility model utilizes micro nano bubble has the characteristics of big specific surface area, long residence time and can produce hydroxyl radical and other strong oxidizing property material, combines its in the filler layer and the full countercurrent contact of pollutant, can realize the efficient oxidation decomposition of the refractory organic matter in waste gas, and can decompose the pollutant contained in the wastewater that sprays down.

Description

Technical Field

[0001] This utility model relates to the field of micro-nano bubble oxidation tower technology, and in particular to a micro-nano bubble oxidation tower that can be applied to waste gas treatment and water treatment. Background Technology

[0002] The treatment of industrial waste gas and organic wastewater is a key and challenging area in environmental protection. Traditional waste gas treatment processes (such as activated carbon adsorption and ordinary alkaline spraying) have obvious limitations in practical applications. For waste gas treatment, activated carbon adsorption suffers from problems such as rapid adsorption saturation, high operating costs, and difficulty in disposing of hazardous activated carbon. Ordinary spray towers, on the other hand, have low gas-liquid mass transfer efficiency and are not ideal for removing recalcitrant volatile organic compounds (VOCs). Micro- and nanobubble technology exhibits significant advantages in gas-liquid mass transfer and the oxidative decomposition of recalcitrant pollutants due to its small bubble diameter, large specific surface area, long residence time in the liquid phase, and ability to induce strong oxidizing substances such as hydroxyl radicals. However, the efficient application of micro- and nanobubbles in waste gas treatment, particularly the construction of a highly integrated and automated treatment system capable of synergistically treating waste gas and wastewater, achieving internal water resource recycling, remains a challenge. Most existing devices are functionally limited and fail to effectively integrate functional modules such as micro- and nanobubble generation and efficient gas-liquid reaction. Therefore, a highly integrated system with low operating costs that can simultaneously and efficiently purify both exhaust gas and wastewater is needed to overcome the shortcomings of existing technologies. Utility Model Content

[0003] The purpose of this invention is to address the shortcomings of existing technologies by proposing a micro-nano bubble oxidation tower that can be applied to waste gas treatment and water treatment.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: A micro / nano bubble oxidation tower applicable to waste gas treatment and water treatment includes an oxidation tower body. A conical cover is bolted to the top outer wall of the oxidation tower body, and an exhaust pipe is welded to the top of the conical cover. An air inlet pipe is welded to the side of the oxidation tower body, and a spray pipe is installed on the side of the oxidation tower body. A spray plate is fixed to the bottom of the spray pipe through a connector, and a nozzle is installed at the bottom of the spray plate. A micro / nano bubble generating component is connected to the end of the spray pipe away from the spray plate. A mesh plate is fixed to the inner circumference of the oxidation tower body, and a packing layer is provided on the mesh plate. A demister is installed on the inner surface of the oxidation tower body near the top.

[0005] As a further embodiment of this utility model: the micro-nano bubble generating component includes a micro-nano bubble generator and a connecting pipe. The output end of the micro-nano bubble generator is fixedly connected to the connecting pipe, and the end of the connecting pipe away from the micro-nano bubble generator is fixedly connected to the spray pipe. The micro-nano bubble generating component uses a water supply mechanism to supply water.

[0006] As a further embodiment of this utility model: the water supply mechanism includes a water tank and a cover plate. The water tank is fixed to the side of the main body of the oxidation tower by bolts, and the cover plate is fixed to the top of the water tank by screws.

[0007] As a further embodiment of this utility model: an installation plate is welded to one side of the outer wall of the water tank, and a filter and a pressure pump are respectively fixed to the top outer wall of the installation plate by bolts. The filter and the side of the water tank are fixedly connected by a connecting pipe. The filter and the pressure pump, as well as the pressure pump and the input end of the micro-nano bubble generator, are fixedly connected by a connector.

[0008] As a further improvement of this utility model: a side tube is welded to the side of the main body of the oxidation tower, and an observation window is fixed to one end of the side tube by bolts.

[0009] As a further embodiment of this utility model: a collection tray is fixed to the inner wall of the oxidation tower body near the bottom by bolts, and a reflux valve is connected to the bottom of the collection tray by a reflux pipe. The reflux valve is connected to the side of the water tank by a pipe.

[0010] As a further improvement of this utility model: a drain valve and a water supply valve are fixed to one side of the outer wall of the water tank through pipes and joints, and a liquid level sensor is installed on the top of the cover plate, with the probe of the liquid level sensor extending into the interior of the water tank.

[0011] As a further improvement of this utility model, a controller is installed on the side of the water tank.

[0012] Compared with the prior art, this utility model provides a micro-nano bubble oxidation tower that can be applied to waste gas treatment and water treatment, and has the following beneficial effects: 1. By utilizing the characteristics of micro- and nano-bubbles, such as large specific surface area, long residence time, and the ability to generate strong oxidizing substances like hydroxyl radicals, and combining them with sufficient countercurrent contact with pollutants in the packing layer, it is possible to achieve highly efficient oxidative decomposition of recalcitrant organic matter in exhaust gas or wastewater generated after spraying. The cavitation effect when the bubbles collapse can further promote the degradation of pollutants, and the purification effect far exceeds that of traditional bubble technology.

[0013] 2. The system integrates functions such as water supply, filtration, bubble generation, spraying, demisting, liquid level monitoring, and automatic water replenishment / drainage. Through the controller, intelligent linkage control is achieved, reducing manual operation and optimizing operating parameters in real time. This ensures that the system can operate stably and efficiently under different loads, reducing the difficulty of management and maintenance.

[0014] 3. By utilizing the wastewater recirculation pathway, the micro-nano bubble oxidation effectively degrades recalcitrant organic pollutants in wastewater and increases the oxygenation rate of the water body, ultimately achieving the purpose of decomposing pollutants in the water. This realizes the internal circulation of water resources, greatly reducing water consumption and wastewater discharge. Regularly discharging sewage through the drain valve can maintain the water quality within the system, avoid the accumulation of pollutants, and significantly reduce operating costs and environmental burden.

[0015] The parts of this device not covered herein are the same as or can be implemented using existing technologies. This utility model has a simple structure and is easy to operate. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of a micro-nano bubble oxidation tower that can be applied to waste gas treatment and water treatment, as proposed in this utility model. Figure 2 This is a cross-sectional structural diagram of a micro-nano bubble oxidation tower that can be applied to waste gas treatment and water treatment according to the present invention. Figure 3 This is a schematic diagram of the top structure of a micro-nano bubble oxidation tower that can be applied to waste gas treatment and water treatment according to the present invention. Figure 4 This is a schematic diagram of the oxidation component structure of a micro-nano bubble oxidation tower that can be applied to waste gas treatment and water treatment, as proposed in this utility model. Figure 5 This is a schematic diagram of the spray component structure of a micro-nano bubble oxidation tower that can be applied to waste gas treatment and water treatment, as proposed in this utility model.

[0017] In the diagram: 1. Oxidation tower body; 2. Conical cover; 3. Exhaust pipe; 4. Liquid level sensor; 5. Controller; 6. Water tank; 7. Mounting plate; 8. Filter; 9. Micro-nano bubble generator; 10. Connecting pipe one; 11. Side pipe; 12. Observation window; 13. Mesh plate; 14. Spray pipe; 15. Spray tray; 16. Packing layer; 17. Pressure pump; 18. Connecting pipe two; 19. Drain valve; 20. Water supply valve; 21. Return valve; 22. Air inlet pipe; 23. Demister; 24. Cover plate; 25. Nozzle; 26. Return pipe; 27. Collection tray. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0019] A micro / nano bubble oxidation tower that can be applied to waste gas treatment and water treatment, such as Figures 1 to 5 As shown, the oxidation tower includes an oxidation tower body 1. A conical cover 2 is fixed to the top outer wall of the oxidation tower body 1 by bolts. An exhaust pipe 3 is welded to the top of the conical cover 2. An air inlet pipe 22 is welded to the side of the oxidation tower body 1. A spray pipe 14 is installed on the side of the oxidation tower body 1. A spray plate 15 is fixed to the bottom of the spray pipe 14 by a connector. A nozzle 25 is installed at the bottom of the spray plate 15. A micro-nano bubble generating component is connected to the end of the spray pipe 14 away from the spray plate 15. A mesh plate 13 is fixed to the inner circumference of the oxidation tower body 1. A packing layer 16 is provided on the mesh plate 13. When exhaust gas needs to be treated, the inlet pipe 22 and the exhaust gas delivery pipe (not shown) are connected first. The exhaust gas is input into the body of the oxidation tower 1 through the inlet pipe 22. Micro-nano bubbles are generated by the micro-nano bubble generating component. The micro-nano bubbles are input into the spray plate 15 through the spray pipe 14 and finally sprayed out through the nozzle 25. After the exhaust gas passes through the mesh plate 13 and the packing layer 16 from the bottom of the oxidation tower body 1, the spray water rich in micro-nano bubbles is sprayed down through the nozzle 25. The mesh plate 13 can support the packing layer 16. The packing layer 16 contacts the exhaust gas countercurrently on the surface of the packing layer 16. The micro-nano bubbles can promote the generation of a large number of hydroxyl groups in the liquid, which creates a stronger oxidation environment, which is conducive to the oxidation and decomposition of harmful substances in the exhaust gas. At the same time, the cavitation effect generated when the bubbles collapse can further promote the degradation of pollutants. In this embodiment, the packing layer 16 is preferably Pall ring packing or Raschig ring packing.

[0020] A demister 23 is installed on the inner surface of the main body 1 of the oxidation tower near the top. The demister 23 is preferably a cyclone plate or wire mesh demister, used to separate water droplets entrained in the purified exhaust gas, ensuring that the discharged gas is dry and clean while avoiding water loss. The treated gas is finally discharged through the exhaust pipe 3.

[0021] The micro-nano bubble generating component includes a micro-nano bubble generator 9 and a connecting pipe 10. The output end of the micro-nano bubble generator 9 is fixedly connected to the connecting pipe 10. The end of the connecting pipe 10 away from the micro-nano bubble generator 9 is fixedly connected to the spray pipe 14. The micro-nano bubble generating component uses a water supply mechanism to supply water. The water supply mechanism includes a water tank 6 and a cover plate 24. The water tank 6 is fixed to the side of the oxidation tower body 1 by bolts, and the cover plate 24 is fixed to the top of the water tank 6 by screws. An installation plate 7 is welded to one side of the outer wall of the water tank 6. A filter 8 and a pressure pump 17 are fixed to the top outer wall of the installation plate 7 by bolts. The filter 8 and the side of the water tank 6 are fixedly connected by a connecting pipe 2 18. The filter 8 and the pressure pump 17, as well as the pressure pump 17 and the input end of the micro-nano bubble generator 9, are fixedly connected by a connector. Water is drawn from water tank 6 by a pressurizing pump 17. After being drawn in, the water enters filter 8 through connecting pipe 18 for filtration. Filter 8 is preferably a Y-type filter. The filtered water then enters micro-nano bubble generator 9, where micro-nano bubbles are generated. Micro-nano bubble generator 9 dissolves gases such as air, oxygen, or ozone in a liquid under pressure to form a gas-liquid mixture. A specific generator, such as a venturi tube, cyclone shearing, or pressurized dissolved gas depressurization device, generates a violent pressure drop and turbulence upon instantaneous release. This process causes supersaturated gas to precipitate at extremely high density, and under strong shear force, large bubbles are "cut" into micro-nano bubbles with diameters ranging from hundreds of nanometers to tens of micrometers. The working principle is existing technology and will not be elaborated here. The generated micro-nano bubbles are finally ejected through nozzle 25.

[0022] The oxidation tower body 1 has a side pipe 11 welded to its side, and an observation window 12 is fixed to one end of the side pipe 11 by bolts. The processing status inside the oxidation tower body 1 can be observed by setting up an observation window 12.

[0023] The inner wall of the oxidation tower body 1 is fixed with a collection tray 27 near the bottom by bolts. The bottom of the collection tray 27 is connected to a return valve 21 through a return pipe 26. The return valve 21 is connected to the side of the water tank 6 through a pipe. The treated wastewater is collected using the collection tray 27. The micro-nano bubbles generated after collection, due to their small size, large specific surface area, long residence time in water, spontaneous contraction and rupture, and generation of hydroxyl radicals, can significantly enhance the air flotation separation effect and promote mass transfer efficiency in wastewater treatment. They can also effectively degrade recalcitrant organic pollutants in wastewater and increase the oxygenation rate of the water body through oxidation, ultimately achieving the purpose of decomposing pollutants in the water and treating the wastewater. When the return valve 21 is opened, the treated wastewater is returned to the water tank 6 for recycling.

[0024] A drain valve 19 and a water supply valve 20 are fixed to one side of the outer wall of the water tank 6 through pipes and joints. A liquid level sensor 4 is installed on the top of the cover plate 24. The probe of the liquid level sensor 4 extends into the water tank 6. The liquid level sensor 4 and the water supply valve 20 are electrically connected. After the wastewater flows back into the water tank 6 through the return pipe 26 and the return valve 21, the non-degradable sediment will settle and separate here. The concentrated sludge is discharged periodically through the drain valve 19, thereby greatly reducing the burden on the water body. The liquid level sensor 4 is used to monitor the liquid level in the water tank 6. By connecting the water supply valve 20 and the water supply pipe (not shown), when the liquid level sensor 4 detects that the liquid level in the water tank 6 is too low, the water supply valve 20 is opened to replenish the water tank 6 with water through the water supply pipe.

[0025] A controller 5 is installed on the side of the water tank 6; The controller 5 receives signals from the liquid level sensor 4 and other devices via electrical connection. It automatically controls the start, stop and linkage of the pressurization pump 17, micro-nano bubble generator 9, reflux valve 21, water supply valve 20 and sewage discharge valve 19 via electrical connection, thereby realizing the automated operation of liquid level maintenance, water circulation, chemical dosing and sludge discharge.

[0026] Working principle: Waste gas enters the bottom of the oxidation tower body 1 through the inlet pipe 22. At the same time, the micro-nano bubble generator 9 produces liquid rich in micro-nano bubbles, which is transported to the spray plate 15 through the spray pipe 14 and finally sprayed down by the nozzle 25. During the upward process, the waste gas passes through the packing layer 16 and comes into countercurrent contact with the falling micro-nano bubble liquid. The efficient oxidation and cavitation of the micro-nano bubbles decomposes the pollutants. The purified gas is discharged through the exhaust pipe 3 after the moisture is removed by the demister 23, while the wastewater is collected by the collection plate 27 and can be returned to the water tank 6 for recycling through the return valve 21.

[0027] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A micro / nano bubble oxidation tower applicable to waste gas treatment and water treatment, comprising an oxidation tower body (1), characterized in that, The outer top wall of the oxidation tower body (1) is fixed with a conical cover (2) by bolts. An exhaust pipe (3) is welded to the top of the conical cover (2). An air inlet pipe (22) is welded to the side of the oxidation tower body (1). A spray pipe (14) is installed on the side of the oxidation tower body (1). A spray plate (15) is fixed to the bottom of the spray pipe (14) by a connector. A nozzle (25) is installed at the bottom of the spray plate (15). A micro-nano bubble generating component is connected to the end of the spray pipe (14) away from the spray plate (15). A mesh plate (13) is fixed to the inner circumference of the oxidation tower body (1). A packing layer (16) is provided on the mesh plate (13). A demister (23) is installed on the inner surface of the oxidation tower body (1) near the top.

2. The micro / nano bubble oxidation tower applicable to waste gas treatment and water treatment according to claim 1, characterized in that, The micro-nano bubble generating component includes a micro-nano bubble generator (9) and a connecting pipe (10). The output end of the micro-nano bubble generator (9) and the connecting pipe (10) are fixedly connected. The end of the connecting pipe (10) away from the micro-nano bubble generator (9) is fixedly connected to the spray pipe (14). The micro-nano bubble generating component uses a water supply mechanism to supply water.

3. The micro / nano bubble oxidation tower applicable to waste gas treatment and water treatment according to claim 2, characterized in that, The water supply mechanism includes a water tank (6) and a cover plate (24). The water tank (6) is fixed to the side of the main body (1) of the oxidation tower by bolts, and the cover plate (24) is fixed to the top of the water tank (6) by screws.

4. A micro / nano bubble oxidation tower applicable to waste gas treatment and water treatment according to claim 3, characterized in that, The water tank (6) has an installation plate (7) welded to one side of its outer wall. The top outer wall of the installation plate (7) is fixed with a filter (8) and a pressure pump (17) by bolts. The filter (8) and the side of the water tank (6) are fixedly connected by a connecting pipe (18). The filter (8) and the pressure pump (17) are fixedly connected by a connector, as are the pressure pump (17) and the input end of the micro-nano bubble generator (9).

5. A micro / nano bubble oxidation tower applicable to waste gas treatment and water treatment according to claim 4, characterized in that, The oxidation tower body (1) has a side tube (11) welded to its side, and an observation window (12) is fixed to one end of the side tube (11) by bolts.

6. A micro / nano bubble oxidation tower applicable to waste gas treatment and water treatment according to claim 5, characterized in that, The inner wall of the oxidation tower body (1) is fixed with a collection tray (27) near the bottom by bolts. The bottom of the collection tray (27) is connected to a reflux valve (21) through a reflux pipe (26). The reflux valve (21) and the side of the water tank (6) are connected by a pipe.

7. A micro / nano bubble oxidation tower applicable to waste gas treatment and water treatment according to claim 6, characterized in that, The outer wall of one side of the water tank (6) is fixed with a drain valve (19) and a water supply valve (20) through pipes and joints. A liquid level sensor (4) is installed on the top of the cover plate (24), and the probe of the liquid level sensor (4) extends into the interior of the water tank (6).

8. A micro / nano bubble oxidation tower applicable to waste gas treatment and water treatment according to claim 7, characterized in that, A controller (5) is installed on the side of the water tank (6).

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