Heterogeneous catalytic ozonation reactor for sewage treatment
By adopting a heterogeneous ozone catalytic oxidation reactor in sewage treatment, combined with the design of annular multi-point water distribution and water distribution pore plates, efficient removal of organic matter in sewage and control of salt is achieved, and the problem of increasing salt content in sewage treatment effluent in the prior art is solved, and the catalyst recycling is realized through the design of solid-liquid separation module.
Patent Information
- Application Number
- CN202420978951.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-08
- Publication Date
- 2025-04-22
- Estimated Expiration
- 2034-05-08
AI Technical Summary
The existing advanced oxidation treatment technology is difficult to effectively remove organic matter when treating industrial wastewater containing high organic matter and salt, and the salt content of the treated effluent is increased due to pH adjustment, which affects the quality of the effluent.
A heterogeneous ozone catalytic oxidation reactor is adopted to achieve uniform mixing of sewage and ozone by combining annular multi-point water distribution and water distribution pore plates, and ozone is added by micro-nano dissolved gas water to enhance the oxidation reaction effect. At the same time, the catalyst is retained through the solid-liquid separation module to prevent its loss and realize the reuse of the catalyst.
It realizes efficient removal of organic matter in sewage, avoids the increase in salt caused by pH adjustment, ensures the quality of the effluent, and prevents the loss of catalyst through the design of the solid-liquid separation module, and realizes the recycling of catalysts.
Smart Images
Figure CN222781472U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a sewage treatment heterogeneous ozone catalytic oxidation reactor, and relates to the technical field of sewage advanced oxidation treatment. Background Art
[0002] Advanced oxidation treatment technology is widely used in wastewater treatment, and its key equipment is the advanced oxidation reactor. For some specific organic wastewaters such as industrial wastewater and park wastewater, due to the high content of organic matter that is difficult to biologically treat in the raw water and a certain concentration of salt, when using conventional Fenton and Fenton-like advanced oxidation treatment technologies, the addition of acid and alkali agents for pH adjustment before and after the reaction will inevitably lead to an increase in the salt content of the treated water, which is extremely unfavorable for the control of the salt content of the effluent. The heterogeneous ozone catalytic oxidation technology, on the other hand, strengthens and fully utilizes the strong oxidizing properties of the free radicals generated by ozone under the catalytic action of the catalyst, and completely oxidizes and decomposes to remove organic matter. At the same time, because no pH adjustment is required, no salt is introduced. Summary of the invention
[0003] The purpose of the utility model is to provide a sewage treatment heterogeneous ozone catalytic oxidation reactor, so as to solve the above-mentioned problems existing in the prior art.
[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:
[0005] A sewage treatment heterogeneous ozone catalytic oxidation reactor comprises a reactor body, a water inlet distribution pipe, a water distribution part, an external circulation part, a solid-liquid separation module, and an annular water outlet part.
[0006] The reactor body is a sealed tank. The bottom of the tank is provided with a water inlet, an air inlet, a circulating water inlet, an inspection port b, and an emptying port; the middle of the tank is provided with an inspection port a and three sampling ports from bottom to top; the upper part of the tank is provided with a circulating water outlet; the top of the tank is provided with a sealed top plate, an exhaust gas outlet, and a water outlet.
[0007] The ozone required for the heterogeneous ozone catalytic oxidation reactor is produced by a separate ozone generator system, and is mixed with raw sewage to prepare micro-nano dissolved air bubble water, which then enters the air inlet.
[0008] The water inlet distribution pipe is an annular perforated water distribution pipe and is evenly distributed along the circumference of the bottom of the tank body.
[0009] The water distribution part is a layer of orifice plate arranged horizontally at the bottom of the tank body, and the periphery of the orifice plate is connected to the inner wall of the tank body. Through the water distribution holes evenly distributed on the plate, the wastewater and ozone can be evenly mixed in the tank, which helps to enhance the reaction effect. A layer of screen is covered on the orifice plate, and the mesh size of the screen is smaller than the diameter of the catalyst particles to prevent the catalyst from leaking through the screen and the orifice plate to the bottom of the tank.
[0010] The external circulation part is a reactor auxiliary unit, including an external circulation pump and its inlet and outlet water pipelines.
[0011] The solid-liquid separation module is an inclined plate separation module arranged obliquely, and the inclined plate has an inclination angle (angle with the horizontal) of 60°, which is used to intercept solid catalyst particles, realize solid-liquid separation, and prevent catalyst particles from being lost with the effluent.
[0012] The annular water outlet part is a 360° annular water outlet weir to ensure uniform water outlet. The outer side of the water outlet weir is connected to an annular water outlet trough, and the water outlet is opened on the water outlet trough.
[0013] The beneficial effects of the utility model are:
[0014] The utility model adopts a combination of annular multi-point water distribution and a water distribution orifice plate to ensure uniform water distribution and reaction mixing, and at the same time combines the addition of ozone in the form of micro-nano dissolved air water to enhance the ozone oxidation reaction effect. Before the water is discharged, the solid-liquid separation module is passed to ensure the effective retention of catalytic particles, prevent the loss of catalyst, and realize the reuse of catalyst. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 This is a schematic diagram of the overall structure of the utility model heterogeneous ozone catalytic oxidation reactor:
[0016] Among them: 1-tower body, 2-bottom plate, 3-water inlet, 4-circulating water inlet, 5-inspection port a, 6-solid-liquid separation module, 7-circulating water outlet, 8-inspection port b, 9-water distribution orifice plate (covered with screen), 10-sampling port (3 pcs), 11-annular water outlet trough, 12-water outlet, 13-exhaust gas outlet, 14-emptying port, 15-sealed top plate, 16-air inlet (4 pcs), 17-annular water distribution pipe, 18-water distribution hole, 19-water distribution hole, 20-inclined plate, 21-water outlet weir.
[0017] Figure 2 This is a schematic diagram of the bottom water distribution pipe structure of the utility model.
[0018] Figure 3 This is a schematic diagram of the structure of the water distribution orifice plate of the utility model.
[0019] Figure 4 This is a schematic diagram of the structure of the solid-liquid separation module of the utility model.
[0020] Figure 5 It is a schematic diagram of the water outlet weir structure of the utility model. DETAILED DESCRIPTION
[0021] In order to make the purpose and technical solution of the utility model more clear, the technical solution of the utility model is further described below in conjunction with the accompanying drawings. The implementation methods described here are only used to explain the utility model and are not used to limit the utility model.
[0022] This embodiment provides a wastewater treatment heterogeneous ozone catalytic oxidation reactor, which is suitable for advanced oxidation treatment of wastewater. Figure 1 As shown, the treatment device includes a reactor body, a water inlet distribution pipe, a water distribution part, an external circulation part, a solid-liquid separation module, and an annular water outlet part.
[0023] The reactor main tower body 1 is a sealed tank body. The bottom of the tank body is provided with a water inlet 3, an air inlet 16 (4), a circulating water inlet 4, an inspection port b 8, and an emptying port 14; the middle of the tank body is provided with an inspection port a 5 and a sampling port 10 (3) in sequence from bottom to top; the upper part of the tank body is provided with a circulating water outlet 7; the top of the tank body is provided with a sealed top plate 15, an exhaust gas outlet 13, and a water outlet 12.
[0024] After the sewage enters the reactor from the water inlet 3 at the bottom of the tank, Figure 2 As shown, water is evenly distributed through the annular water distribution pipe 17. To ensure even water distribution, the annular water distribution pipe is laid along the 360° circumference of the inner wall of the tank. A plurality of water distribution holes are opened on the pipe, and the opening direction of the water distribution holes points to the center of the circle.
[0025] After the ozone gas is mixed with the raw sewage to form dissolved air bubble water, it enters the reactor through the air inlet 16. There are four air inlets, which are evenly arranged along the outer wall of the tank to ensure uniform ozone gas intake.
[0026] Sewage and ozone (dissolved air water) mix and rise, such as Figure 3 As shown, the water flows through the water distribution orifice plate for further homogenization, and through hydraulic disturbance, the solid catalyst particles are stirred and suspended and fluidized, which promotes dynamic and full contact between the catalyst and sewage and ozone, and strengthens the catalytic oxidation reaction effect. The water distribution orifice plate is covered with a layer of screen, the mesh size of which is smaller than the catalyst particle size, to prevent the catalyst from leaking through the screen and the orifice plate and accumulating at the bottom of the tank.
[0027] The external circulation part is an auxiliary unit of the reactor, including an external circulation pump and water inlet and outlet pipes. One end of the water inlet pipe of the external circulation pump is connected to the circulating water outlet 7, and the other end is connected to the circulating water inlet 4, so as to realize the circulation of sewage inside the reactor and make the catalytic oxidation reaction more complete.
[0028] Solid-liquid separation module 6, such as Figure 1 and Figure 4As shown, it is composed of inclined plates arranged obliquely, and is located above the inside of the reactor and below the annular water outlet trough. It mainly intercepts solid catalyst particles in sewage through the inclined plates (with an angle of 60° to the horizontal) to achieve solid-liquid separation, prevent catalyst particles from being lost with the effluent, and realize catalyst recycling.
[0029] Annular water outlet trough 11, such as Figure 5 As shown, the water outlet weir 21 is arranged in a 360° annular shape, the outer side of which is connected to the annular water outlet trough 11, and the water outlet 12 is opened on the water outlet trough 11.
[0030] The above-described embodiments are only detailed examples and descriptions of the present invention, and should not limit the present invention to the above-described implementation scope. Any modifications and changes made based on the present invention should be considered within the protection scope of the present invention.
Claims
1. A sewage treatment heterogeneous ozone catalytic oxidation reactor, characterized in that: Suitable for advanced oxidation treatment of sewage, the reactor comprises a reactor body, a water inlet distribution pipe, a water distribution part, an external circulation part, a solid-liquid separation module, and an annular water outlet part; The reactor body is a sealed tank body, the bottom of the tank body is provided with a water inlet (3), an air inlet (16), a circulating water inlet (4), an inspection port b (8), and an emptying port (14), the middle of the tank body is provided with an inspection port a (5) and a sampling port (10) in order from bottom to top, the upper part of the tank body is provided with a circulating water outlet (7), and the top of the tank body is provided with a sealed top plate (15), an exhaust gas outlet (13), and a water outlet (12).
2. A sewage treatment heterogeneous ozone catalytic oxidation reactor according to claim 1, characterized in that: The water inlet distribution pipe is an annular water distribution pipe (17), which is laid along the inner wall of the reactor tank at 360°. A plurality of water distribution holes (18) are opened on the pipe, and the opening direction of the water distribution holes points to the center of the circle.
3. A sewage treatment heterogeneous ozone catalytic oxidation reactor according to claim 1, characterized in that: The number of the air inlets (16) is 4 and they are evenly arranged at intervals of 90° along the outer wall of the tank.
4. A sewage treatment heterogeneous ozone catalytic oxidation reactor according to claim 1, characterized in that: The dissolved air bubble water formed by sewage and ozone mixes and rises, flows through the water distribution orifice plate for further homogenization, and through hydraulic disturbance, the solid catalyst is suspended and fluidized. The water distribution orifice plate is covered with a layer of screen with a mesh size smaller than the catalyst particle size to prevent the catalyst from leaking through the screen and the orifice plate and accumulating to the bottom of the tank.
5. A sewage treatment heterogeneous ozone catalytic oxidation reactor according to claim 1, characterized in that: The external circulation part serves as an auxiliary unit of the reactor, including an external circulation pump and water inlet and outlet pipes, so as to realize the circulation of sewage inside the reactor and make the catalytic oxidation reaction more complete.
6. A sewage treatment heterogeneous ozone catalytic oxidation reactor according to claim 1, characterized in that: The solid-liquid separation module (6) is composed of inclined plates arranged obliquely, with the angle between the inclined plates and the horizontal being 60°. The solid catalyst particles in the sewage are mainly intercepted by the inclined plates to achieve solid-liquid separation, prevent the catalyst particles from being lost with the effluent, and achieve catalyst recycling.
7. A sewage treatment heterogeneous ozone catalytic oxidation reactor according to claim 1, characterized in that: The annular water outlet portion comprises an annular water outlet groove (11), which is composed of a water outlet weir (21) arranged in a 360-degree annular manner and an annular water outlet groove connected to the outer side thereof, so as to ensure that the water outlet of the reactor is uniform without leaving any dead corners. At the same time, the water outlet (12) is opened on the water outlet groove (11).