Multistage treatment ozone catalytic oxidation reactor

Abstract

The utility model discloses a multistage treatment ozone catalytic oxidation reactor which comprises a reactor body, a wastewater inlet pipe is arranged at the bottom of the reactor body, an ozone feeding pipe is rotatably mounted in the reactor body, and a plurality of sections of external thread structures are arranged on the ozone feeding pipe. Each section of external thread structure is in threaded connection with a moving box capable of sliding up and down, and a catalyst is arranged in each moving box; a hollow stirring paddle is arranged below each section of the external thread structure, is communicated with an ozone feeding pipe and is provided with an air outlet hole; a flow stabilizing plate is arranged above each section of the external thread structure, the flow stabilizing plates are connected with the inner wall of the reactor body, and water passing holes are formed in the flow stabilizing plates; a water outlet pipe and an exhaust pipe are also arranged at the top of the reactor body; the exhaust pipe is connected with the tail gas destructor. According to the utility model, catalytic oxidation reaction of wastewater can be quickly and efficiently completed through cooperative treatment of layer-by-layer ozone and a catalyst, the overall treatment efficiency is greatly improved, and the treatment effect is better.

Description

Technical Field

[0001] The utility model relates to the technical field of wastewater treatment, in particular to a multi-stage ozone catalytic oxidation reactor. Background Art

[0002] Industrial wastewater typically contains large amounts of recalcitrant COD, primarily long-chain compounds, polycyclic aromatic hydrocarbons, heterocyclic aromatic hydrocarbons, and other organic matter. These substances are largely inaccessible to traditional biological treatment processes. Ozone catalytic oxidation is a highly effective advanced wastewater treatment technology. It utilizes a catalyst in conjunction with ozone oxidation to effectively stimulate the more potent and nearly nonselective hydroxyl radicals, rapidly removing these organics.

[0003] The current problems with ozone catalytic oxidation towers are: 1. Ozone is only introduced through aeration at the bottom, and the concentration decreases as it goes up, affecting the water treatment effect; 2. The catalyst is set in a fixed position in the tower, and as the water flows slowly through, the contact between the wastewater and the catalyst is not complete and sufficient, affecting the catalytic effect; 3. The wastewater rises slowly for catalytic oxidation treatment, which is not sufficient and the overall treatment efficiency is low. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a multi-stage ozone catalytic oxidation reactor, aiming to solve the technical problems existing in the prior art such as uneven ozone concentration distribution, insufficient contact between the catalyst and wastewater, and low overall treatment efficiency of the traditional ozone catalytic oxidation tower.

[0005] The technical solution of the utility model is: a multi-stage ozone catalytic oxidation reactor, comprising a reactor body, a wastewater inlet pipe is provided at the bottom of the reactor body, an ozone air supply pipe is rotatably installed in the reactor body, the ozone air supply pipe is provided with multiple sections of external thread structures, each section of the external thread structure is threadedly connected to a movable box that can slide up and down, and a catalyst is provided in the movable box; a hollow stirring paddle is provided below each section of the external thread structure, the hollow stirring paddle is connected to the ozone air supply pipe, and an air outlet is provided on the hollow stirring paddle; a flow stabilizing plate is provided above each section of the external thread structure, the flow stabilizing plate is connected to the inner wall of the reactor body, and a water hole is provided on the flow stabilizing plate; a water outlet pipe and an exhaust pipe are also provided on the top of the reactor body, and the exhaust pipe is connected to the exhaust destroyer.

[0006] Furthermore, the upper end of the ozone air supply pipe described in the present invention is connected to the motor through a rotating shaft, the motor is installed on the top of the reactor body, the lower end of the ozone air supply pipe is sealed and rotatably connected to the ozone air inlet pipe, the ozone air inlet pipe is fixedly installed at the bottom of the reactor body, and the ozone air inlet pipe is connected to the ozone generator.

[0007] Furthermore, the movable box of the present invention is slidably connected to the inner wall of the reactor body, and through holes are provided on the upper and lower surfaces of the movable box, and the catalyst is movably placed in the movable box.

[0008] Furthermore, in the present invention, two hollow stirring paddles are provided below each section of the external thread structure, and the two hollow stirring paddles are respectively provided on both sides of the ozone air supply pipe and are staggered in an upper and lower manner.

[0009] Furthermore, a booster pump is provided between the ozone generator and the ozone inlet pipe in the utility model.

[0010] Compared with the prior art, the utility model has the following advantages: when the reactor of the utility model treats wastewater, a motor is used to drive the ozone air supply pipe to rotate forward and reverse, driving the hollow stirring paddle to rotate while supplying ozone, which can not only play a stirring role, but also achieve uniform distribution of ozone concentration through multi-segment ozone input. At the same time, the movable box is driven to rise and fall, and the catalyst can move up and down in the box, promoting more complete contact between wastewater and catalyst. The wastewater can complete the catalytic oxidation reaction quickly and efficiently under the coordinated treatment of layers of ozone and catalyst, greatly improving the overall treatment efficiency and achieving better treatment effect. In addition, in order to ensure the stable progress of the reaction, multiple layers of flow stabilizing plates are also designed inside the reactor to stabilize the water flow and ensure that the wastewater rises smoothly to the upper layer for treatment. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a structural diagram of the present utility model.

[0012] Among them: 1. Reactor body; 2. Wastewater inlet pipe; 3. Ozone air supply pipe; 4. External thread structure; 5. Mobile box; 6. Catalyst; 7. Hollow stirring paddle; 8. Air outlet; 9. Flow stabilizer; 10. Water hole; 11. Water outlet pipe; 12. Exhaust pipe; 13. Tail gas destroyer; 14. Rotating shaft; 15. Motor; 16. Ozone inlet pipe; 17. Ozone generator; 18. Booster pump. DETAILED DESCRIPTION

[0013] The following is a detailed description of the specific implementation of the present invention with reference to the accompanying drawings.

[0014] Example:

[0015] The accompanying drawings illustrate a specific embodiment of a multi-stage ozone catalytic oxidation reactor according to the present invention. The reactor comprises a reactor body 1, the bottom of which is provided with a wastewater inlet pipe 2 for introducing wastewater. An ozone air supply pipe 3 is rotatably mounted within the reactor body 1 for introducing ozone. Specifically, the upper end of the ozone air supply pipe 3 is connected to a motor 15 via a rotating shaft 14. The motor 15 is mounted on the top of the reactor body 1. The lower end of the ozone air supply pipe 3 is sealed and rotatably connected to an ozone air inlet pipe 16. The ozone air inlet pipe 16 is fixedly mounted on the bottom of the reactor body 1 and is connected to an ozone generator 17 via a booster pump 18.

[0016] The ozone supply pipe 3 is equipped with two upper and lower externally threaded structures 4. Each section of the externally threaded structure 4 is threadedly connected to a movable box 5 that can slide up and down. The movable box 5 is also slidably connected to the inner wall of the reactor body 1. The movable box 5 has through holes on both the top and bottom surfaces to allow water to flow through. A catalyst 6 is movably placed inside the movable box 5 to ensure that the wastewater comes into contact with the catalyst 6 as it passes through.

[0017] Two hollow stirring paddles 7 are located below each section of the external thread structure 4. These paddles are positioned on either side of the ozone supply pipe 3 and are staggered vertically to provide a wider stirring range. The hollow stirring paddles 7 are connected to the ozone supply pipe 3 and are provided with air outlets 8, which allow for simultaneous stirring and reaction promotion by introducing ozone into the wastewater.

[0018] A flow stabilizing plate 9 is provided above each section of the external thread structure 4 , and the flow stabilizing plate 9 is connected to the inner wall of the reactor body 1 . A water hole 10 is provided on the flow stabilizing plate 9 , which can stabilize the flow when the water flows to the upper layer.

[0019] A water outlet pipe 11 and an exhaust pipe 12 are also provided on the top of the reactor body 1 . The exhaust pipe 12 is connected to an exhaust gas destroyer 13 .

[0020] During operation of the reactor of the present invention, wastewater is introduced through the wastewater inlet pipe 2, and the booster pump 18 pumps ozone into the ozone inlet pipe 16, which is then introduced into the ozone air supply pipe 3. Then, the motor 15 drives the ozone air supply pipe 3 to rotate forward and reverse, and the hollow stirring paddle 7 is driven to rotate. Ozone is introduced into the wastewater through the air outlet 8, where it mixes with the wastewater and reacts fully through stirring. The ozone input in the upper and lower sections can achieve a uniform distribution of ozone concentration. At the same time, the movable box 5 is driven to rise and fall, and the catalyst 6 moves up and down in the box, fully contacting and reacting with the wastewater. The wastewater can quickly and efficiently complete the catalytic oxidation reaction under the coordinated treatment of layers of ozone and catalyst, greatly improving the overall treatment efficiency and achieving better treatment results. In addition, each time the wastewater flows to the upper layer, it will pass through the flow stabilizer 9 to stabilize the flow, avoiding excessive impact on the interior of the reactor. The treated wastewater is discharged from the outlet pipe 11, and the exhaust gas is discharged from the exhaust pipe 12 to the exhaust gas destroyer 13 for treatment.

[0021] The above embodiments are intended only to illustrate the technical concepts and features of the present invention. Their purpose is to enable those familiar with the art to understand the present invention and implement it accordingly. They are not intended to limit the scope of protection of the present invention. Any modifications based on the spirit of the main technical solution of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A multi-stage ozone catalytic oxidation reactor, characterized in that: The invention comprises a reactor body (1), wherein a wastewater inlet pipe (2) is provided at the bottom of the reactor body (1), an ozone air supply pipe (3) is rotatably installed in the reactor body (1), and the ozone air supply pipe (3) is provided with a plurality of sections of external thread structures (4), each section of the external thread structure (4) is threadedly connected with a movable box (5) that can slide up and down, and a catalyst (6) is provided in the movable box (5); and a hollow stirring paddle (7) is provided below each section of the external thread structure (4). The hollow stirring paddle (7) is connected to the ozone air supply pipe (3), and the hollow stirring paddle (7) is provided with an air outlet (8); a flow stabilizing plate (9) is provided above each section of the external thread structure (4), the flow stabilizing plate (9) is connected to the inner wall of the reactor body (1), and a water hole (10) is provided on the flow stabilizing plate (9); a water outlet pipe (11) and an exhaust pipe (12) are also provided at the top of the reactor body (1), and the exhaust pipe (12) is connected to the exhaust gas destroyer (13).

2. A multi-stage ozone catalytic oxidation reactor according to claim 1, characterized in that: The upper end of the ozone air supply pipe (3) is connected to a motor (15) via a rotating shaft (14), and the motor (15) is mounted on the top of the reactor body (1). The lower end of the ozone air supply pipe (3) is sealed and rotatably connected to an ozone air inlet pipe (16), and the ozone air inlet pipe (16) is fixedly mounted on the bottom of the reactor body (1), and the ozone air inlet pipe (16) is connected to an ozone generator (17).

3. The multi-stage ozone catalytic oxidation reactor according to claim 1, characterized in that: The moving box (5) is slidably connected to the inner wall of the reactor body (1); through holes are arranged on the upper and lower surfaces of the moving box (5); and the catalyst (6) is movably placed in the moving box (5).

4. The multi-stage ozone catalytic oxidation reactor according to claim 1, characterized in that: Two hollow stirring paddles (7) are provided below each section of the external thread structure (4), and the two hollow stirring paddles (7) are respectively provided on both sides of the ozone air supply pipe (3) and are staggered up and down.

5. The multi-stage ozone catalytic oxidation reactor according to claim 2, characterized in that: A booster pump (18) is provided between the ozone generator (17) and the ozone inlet pipe (16).

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