Ozone catalytic oxidation sewage treatment device
By setting up an ozone return pipe and a catalyst bed in the ozone catalytic oxidation sewage treatment device, the recycling of ozone is achieved, solving the problem of the inability to recycle the ozone exhaust gas, reducing the ozone emissions and improving the sewage treatment efficiency.
Patent Information
- Application Number
- CN202420768096.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-12
- Publication Date
- 2025-01-07
- Estimated Expiration
- 2034-04-12
AI Technical Summary
Existing ozone-catalyzed oxidation sewage treatment devices cannot effectively recover and utilize ozone in exhaust gas, resulting in high ozone emissions, wasted resources and harmful to the environment.
A device including a catalytic oxidation tower, a water inlet distributor, an aeration disk, an ozone generator, a water inlet pump and a water inlet pump are designed. The enriched ozone is extracted through an ozone return tube and mixed with sewage, and catalyzed with catalyst. Oxidation treatment realizes the recycling of ozone.
It effectively reduces ozone emissions, realizes the recycling of ozone, reduces resource waste, and improves the sewage treatment effect.
Smart Images
Figure CN222312865U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of sewage treatment, in particular to an ozone catalytic oxidation sewage treatment device. Background Art
[0002] In order to make the sewage meet the water quality requirements for discharge into a certain water body or reuse, it is necessary to further treat the sewage. At present, ozone oxidation technology has been widely used in water treatment technology. Ozone has a strong oxidation ability and good purification effect. It can reduce the difficult-to-degrade pollutants in the wastewater to the allowable discharge concentration in a short time, and can also eliminate carcinogenic halogenated organic precursors in the wastewater. It is increasingly used for deep treatment in sewage plants.
[0003] Ozone used in sewage treatment is usually generated from an oxygen source, mixed with sewage through a gas distributor, and then oxidized by contact with sewage. The oxygen content in the tail gas is as high as 80%, and the tail gas also contains about 10% residual ozone and CO2. Ozone is toxic, and the concentration of ozone in the air can reach 0.1mg / m 3 It will irritate the eyes, nose, throat and respiratory tract. The regulations require that ozone tail gas cannot be discharged directly into the atmosphere, and must be destroyed and decomposed by the tail gas destroyer before it can be discharged. The environmental emission of ozone tail gas is stipulated to be 0.3mg / L. After passing through the tail gas destruction device, the oxygen-rich tail gas will be directly discharged into the atmosphere, causing a lot of waste. Therefore, it is urgent to develop an ozone catalytic oxidation sewage treatment device with the function of recycling ozone tail gas. Utility Model Content
[0004] The utility model aims to provide an ozone catalytic oxidation sewage treatment device to achieve the recycling of ozone and reduce the ozone emission.
[0005] According to the purpose of the utility model, the utility model provides an ozone catalytic oxidation sewage treatment device, including a catalytic oxidation tower body, a water inlet distributor, an aeration plate, an ozone generator, a water ejector and a water inlet pump, wherein the water inlet distributor is arranged at the bottom of the catalytic oxidation tower body, the aeration plate is arranged inside the catalytic oxidation tower body, and the ozone generator is connected to the aeration plate; the water inlet end of the water ejector is connected to the water inlet pump, and the water outlet end of the water ejector is connected to the water inlet distributor, and the catalytic oxidation tower body is provided with an ozone reflux pipe, and the ozone reflux pipe is connected to the air inlet end of the water ejector.
[0006] Furthermore, a catalyst bed is arranged in the tower body of the catalytic oxidation tower.
[0007] Furthermore, a water outlet pipe is provided on the upper part of the catalytic oxidation tower body.
[0008] Furthermore, the water outlet pipe is arranged above the catalyst bed.
[0009] Furthermore, a safety valve and an exhaust gas discharge pipe are provided at the top of the catalytic oxidation tower body.
[0010] Furthermore, a one-way valve and a butterfly valve are sequentially arranged on the pipeline at the outlet end of the water inlet pump.
[0011] Furthermore, the aeration plate is mounted above the water inlet distributor.
[0012] Furthermore, the aeration plate comprises an aeration tube plate, a rotary seal and a distribution head, and the distribution head is connected to the aeration tube plate through the rotary seal.
[0013] Furthermore, the rotary seal is a rotary joint.
[0014] Furthermore, the air inlet of the rotary joint is fixedly connected to the aeration tube disc, and the air outlet of the rotary joint is connected to the distribution head via threads.
[0015] The technical solution of the utility model is to provide an ozone reflux pipe on the tower body of the catalytic oxidation tower, the ozone reflux pipe is connected to the air inlet end of the water ejector, the water inlet pump sends the sewage into the water inlet distributor, the ozone generator produces ozone and disperses it in the sewage through the aeration plate, and the pollutants in the sewage are oxidized; under the action of the water ejector, the ozone enriched at the top of the catalytic oxidation tower is extracted, mixed with the sewage and sent into the tower body of the catalytic oxidation tower, and the sewage is catalytically oxidized under the action of the catalyst, so as to realize the recycling of ozone and reduce the ozone emission. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0017] Figure 1 It is a structural schematic diagram of an embodiment of the utility model;
[0018] Figure 2 for Figure 1 A partial enlarged view of the middle A;
[0019] Figure 3 It is a top view of the aeration plate according to an embodiment of the utility model.
[0020] In the figure: 1. catalytic oxidation tower body, 2. water inlet distributor, 3. aeration plate, 4. ozone generator, 5. water ejector, 6. water inlet pump, 7. ozone reflux pipe, 8. catalyst bed, 9. aeration pipe plate, 10. rotary seal, 11. distribution head, 12. channel, 13. buffer chamber, 14. safety valve, 15. exhaust pipe, 16. one-way valve, 17. butterfly valve, 18. outlet pipe. DETAILED DESCRIPTION
[0021] The technical solution of the utility model will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0022] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.
[0023] In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, "multiple" means two or more, unless otherwise clearly and specifically defined. In addition, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.
[0024] Example 1
[0025] like Figure 1-Figure 3 As shown,
[0026] An ozone catalytic oxidation sewage treatment device comprises a catalytic oxidation tower body 1, a water inlet distributor 2, an aeration plate 3, an ozone generator 4, a water ejector 5 and a water inlet pump 6. A catalyst bed 8 is arranged in the catalytic oxidation tower body 1. A water outlet pipe 18 is arranged on the upper part of the catalytic oxidation tower body 1. The water outlet pipe 18 is arranged above the catalyst bed 8.
[0027] A safety valve 14 and an exhaust pipe 15 are provided at the top of the catalytic oxidation tower body 1; a water inlet distributor 2 is arranged at the bottom of the catalytic oxidation tower body 1, a water inlet end of the water ejector 5 is connected to the output end of the water inlet pump 6 through a pipeline, a one-way valve 16 and a butterfly valve 17 are provided on the pipeline at the outlet end of the water inlet pump 6 in sequence, and the water inlet is controlled by the one-way valve and the butterfly valve; the water outlet end of the water ejector 5 is connected to the water inlet distributor 2 through a pipeline.
[0028] The aeration plate 3 is arranged in the tower body 1 of the catalytic oxidation tower and is erected above the water inlet distributor 2 , and the ozone generator 4 is connected to the aeration plate 3 through a pipeline.
[0029] The catalytic oxidation tower body 1 is provided with an ozone reflux pipe 7, the other end of which is connected to the air inlet end of the water injector 5. The water inlet pump 6 sends the sewage into the water inlet distributor. The ozone generator 4 produces ozone and disperses it in the sewage through the aeration plate 3 to oxidize the pollutants in the sewage. The sewage flows through the water injector 5, and a negative pressure is formed in the water injector 5. The unconsumed ozone is sucked in and mixed with the sewage. The ozone enters the catalytic oxidation tower body 1 through the water inlet distributor 2, and the sewage is catalytically oxidized under the action of the catalyst to achieve the recycling of ozone and reduce the ozone emission.
[0030] The aeration plate 3 includes an aeration tube plate 9 , a rotary seal 10 and a distribution head 11 . The distribution head 11 is connected to the aeration tube plate 9 through the rotary seal 10 .
[0031] The rotary seal 10 adopts a standard rotary joint, which is a rotary mechanical sealing device that can transport a medium between a fixed pipeline and a rotary member. In this embodiment, the medium transported by the rotary joint is ozone gas.
[0032] The rotary joint model is a one-in-one-out mode. The rotary joint is a commonly used existing technology in this field and is a standard part. Its structure adjusts the axial pressure of the internal seal compression spring to make the sealing rotating ball (or balance surface seal) and the smooth surface of the ball seal seat contact to achieve the sealing effect, while the surface friction between the sealing rotating ball (balance surface seal) of the joint itself and the ball seal seat is relatively small.
[0033] In this embodiment, a BE type rotary joint may be used, and the BE type rotary joint produced by Jiangsu Benecke Sealing Technology Co., Ltd. may be selected.
[0034] The air inlet of the BE type rotary joint is fixedly connected to the aeration tube disc 9 through a connecting steel pipe, and the air outlet of the BE type rotary joint is connected to the distribution head 11 through threads.
[0035] The lower part of the distribution head 11 is provided with a thread connected to the rotary seal 10, and the lower part of the distribution head 11 is provided with a buffer chamber 13 connected to the rotary seal 10, which is conducive to the stable outlet of ozone; the distribution head 11 and the rotary seal 10 are provided with multiple groups, and the distribution head 11 is provided with multiple groups of spirally arranged channels 12. Ozone flows into the distribution head 11 through the aeration tube disc 9. Under the action of the channels 12, the ozone drives the distribution head 11 to rotate in the reverse direction, which is conducive to the uniform distribution of ozone, and even if pollutants block part of the channels, the distribution head 11 will not affect the dispersion of ozone under the action of the rotation of the distribution head 11.
[0036] When the utility model is in use:
[0037] Start the ozone generator 4 and the water inlet pump 6, and the ozone is blown out from the outlet end of the channel 12 of the distribution head 11. Under the reaction force, the distribution head 11 rotates to promote the full mixing of ozone and wastewater. Even if part of the channel 12 is blocked, the ozone and sewage can still be fully mixed under the rotation of the distribution head 11. The sewage flows through the water ejector 5, and a negative pressure is formed in the water ejector 5. The ozone enriched at the top of the catalytic oxidation tower body 1 is extracted and mixed with the sewage, and then sent into the catalytic oxidation tower body 1 to realize the recycling of ozone. The treated sewage is discharged from the outlet pipe 18, and the safety valve 14 can protect the catalytic oxidation tower body 1.
[0038] The utility model has a simple structure and a reasonable design. Under the action of a water ejector, ozone enriched at the top of a catalytic oxidation tower is extracted and mixed with sewage and sent into the tower body of the catalytic oxidation tower to realize ozone recycling. The distribution head rotates under the drive of ozone, which can effectively make ozone contact with sewage, improve the mixing degree of ozone and sewage, and reduce the influence of channel blockage on ozone distribution.
[0039] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.
Claims
1. An ozone catalytic oxidation sewage treatment device, characterized in that: It includes a catalytic oxidation tower body, a water inlet distributor, an aeration plate, an ozone generator, a water ejector and a water inlet pump. The water inlet distributor is arranged at the bottom of the catalytic oxidation tower body, the aeration plate is arranged inside the catalytic oxidation tower body, and the ozone generator is connected to the aeration plate; the water inlet end of the water ejector is connected to the water inlet pump, and the water outlet end of the water ejector is connected to the water inlet distributor. The catalytic oxidation tower body is provided with an ozone reflux pipe, and the ozone reflux pipe is connected to the air inlet end of the water ejector.
2. The ozone catalytic oxidation sewage treatment device according to claim 1 is characterized in that: A catalyst bed is arranged in the tower body of the catalytic oxidation tower.
3. The ozone catalytic oxidation sewage treatment device according to claim 2 is characterized in that: A water outlet pipe is arranged on the upper part of the tower body of the catalytic oxidation tower.
4. The ozone catalytic oxidation sewage treatment device according to claim 3 is characterized in that: The water outlet pipe is arranged above the catalyst bed.
5. The ozone catalytic oxidation sewage treatment device according to claim 1 is characterized in that: A safety valve and an exhaust pipe are arranged on the top of the catalytic oxidation tower body.
6. The ozone catalytic oxidation sewage treatment device according to claim 1 is characterized in that: A one-way valve and a butterfly valve are arranged in sequence on the pipeline at the outlet end of the water inlet pump.
7. The ozone catalytic oxidation sewage treatment device according to claim 1 is characterized in that: The aeration plate is mounted above the water inlet distributor.
8. The ozone catalytic oxidation sewage treatment device according to claim 1 is characterized in that: The aeration plate comprises an aeration tube plate, a rotary seal and a distribution head, and the distribution head is connected to the aeration tube plate through the rotary seal.
9. The ozone catalytic oxidation sewage treatment device according to claim 8, characterized in that: The rotary seal is a rotary joint.
10. The ozone catalytic oxidation sewage treatment device according to claim 9, characterized in that: The air inlet of the rotary joint is fixedly connected to the aeration tube disc, and the air outlet of the rotary joint is connected to the distribution head through threads.