CN115196741B

CN115196741B - Ozone catalytic oxidation device for water pollution treatment

Info

Publication number: CN115196741B
Application number: CN202211126935.5A
Authority: CN
Inventors: 侯锋; 卢先春; 江乐勇; 庞洪涛; 曹效鑫; 翟丹丹
Original assignee: Tianjin Huanchuang Science And Technology Development Co ltd; SDIC Xinkai Water Environment Investment Co Ltd
Current assignee: Tianjin Huanchuang Science And Technology Development Co ltd; SDIC Xinkai Water Environment Investment Co Ltd
Priority date: 2022-09-16
Filing date: 2022-09-16
Publication date: 2022-11-29
Anticipated expiration: 2042-09-16
Also published as: CN115196741A

Abstract

The invention relates to the technical field of sewage treatment, in particular to an ozone catalytic oxidation device for water pollution treatment, which comprises a base, an ozone generator and an ozone reaction column, wherein the ozone generator and the ozone reaction column are fixed on the base through bolts, an aeration component and a packing layer are arranged in the ozone reaction column, an air outlet of the ozone generator is communicated with an air inlet of the aeration component through a pipeline, an ozone analyzer is arranged on the pipeline, and the ozone catalytic oxidation device also comprises: and the airflow dispersion assembly is used for dispersing the airflow discharged by the aeration assembly. According to the invention, the airflow dispersion assembly is arranged between the packing layer and the aeration assembly in the ozone reaction column, and the ozone discharged by the aeration assembly can be dispersed and dispersed through the airflow dispersion assembly, so that the contact efficiency of the ozone and sewage is improved, the flow range of ozone gas in the ozone reaction column is improved, the flow rate of the ozone gas in the ozone reaction column is reduced, and the oxidation capacity of the ozone is improved.

Description

Ozone catalytic oxidation device for water pollution treatment

Technical Field

The invention relates to the technical field of sewage treatment, in particular to an ozone catalytic oxidation device for water pollution treatment.

Background

With the improvement of the national sewage treatment standard, the water quality is required to reach a new national, industrial or local standard. Generally, the existing sewage treatment process flow needs to be improved in standard extraction and added with an advanced treatment unit. The emission standard is reached through advanced oxidation technologies such as ozone oxidation or ozone catalytic oxidation.

The catalytic ozonation technology is an advanced ozonation technology based on ozone, combines strong oxidizing property of ozone with adsorption and catalytic characteristics of a catalyst to generate a high-reaction-activity free radical intermediate, particularly a hydroxyl free radical, oxidizes and removes nonbiodegradable organic matters in biochemical sewage or industrial wastewater, has good technical advantages in the fields of removing the nonbiodegradable organic matters, improving biodegradability (B/C ratio), decoloring, deodorizing, sterilizing and the like, and is an important measure for ensuring that effluent stably reaches the standard. In recent years, the catalytic ozonation technology is applied to the difficult-to-degrade sewage industry in a certain scale, but still faces the important problems of improving the utilization rate of ozone, overcoming the bottleneck of mass transfer of a system and the like.

The ozone oxidation process for treating wastewater generally uses air or oxygen containing ozone at a low concentration. Ozone is an unstable, readily decomposable strong oxidant, and generally requires on-site manufacture. The ozone oxidation water treatment process facility mainly comprises an ozone generator and an ozone reaction column. At present, the silent discharge method is usually adopted to produce ozone on a large scale, raw material gas for producing ozone is air or oxygen, the raw material gas must be subjected to purification treatment such as oil removal, dehumidification, dust removal and the like, otherwise, the ozone yield and the normal use of equipment can be influenced, and the concentration of ozone produced by air is generally 10-20 mg/L; the concentration of ozone produced by oxygen is 20-40 mg/L, and the air or oxygen containing 1-4 wt% of ozone is the ozonized gas used in water treatment.

The prior art has the disadvantages that when the wastewater is treated by catalytic oxidation of ozone in the prior art, the ozone is generally prepared by an ozone generator and is introduced into an ozone reaction column, and the ozone is sprayed out by an aeration assembly in the ozone reaction column to be in contact oxidation with the sewage.

Disclosure of Invention

In order to solve the problems, the invention provides an ozone catalytic oxidation device for water pollution treatment.

The invention adopts the following technical scheme that the ozone catalytic oxidation device for water pollution treatment comprises a base, an ozone generator and an ozone reaction column, wherein the ozone generator and the ozone reaction column are fixed on the base through bolts, an aeration component and a packing layer are arranged in the ozone reaction column, an air outlet of the ozone generator is communicated with an air inlet of the aeration component through a pipeline, an ozone analyzer is arranged on the pipeline, and the ozone catalytic oxidation device also comprises: the airflow dispersing assembly is used for dispersing the airflow discharged by the aeration assembly, is arranged in the ozone reaction column and is positioned between the packing layer and the aeration assembly;

the airflow dispersion assembly comprises two dispersion rings, a dispersion disc and a flow guide disc, wherein the two dispersion rings are arranged at ordinary times, the dispersion disc is arranged between the two dispersion rings, the flow guide disc is positioned right below the bottommost dispersion ring, the dispersion rings and the dispersion disc are welded and fixed through first connecting rods, and the dispersion ring positioned at the bottommost end and the flow guide disc are welded and fixed through second connecting rods;

the dispersing ring consists of an annular frame and a first circular table cover welded on the outer wall of the annular frame, the bottom end opening of the first circular table cover is larger than the top end opening, and the bottom end of the outer wall of the first circular table cover is fixedly bonded with the inner wall of the ozone reaction column;

the dispersion impeller comprises circular dish and the second round platform cover that sets up at circular dish outer wall corner, second round platform cover bottom opening is greater than the top opening, and has the clearance between second round platform cover bottom outer wall and the ozone reaction column inner wall.

As a further description of the above technical solution: the bottom end of the outer wall of the ozone reaction column is in conduction connection with a water inlet pipe, the water inlet pipe is connected with a water distribution pipe, a drain pipe is in conduction connection with the upper portion of the packing layer on the outer wall of the ozone reaction column, an outlet pipe is in conduction connection with the center of the top of the ozone reaction column, and the outlet pipe is connected with a tail gas control valve.

As a further description of the above technical solution: the water inlet pipe is connected with the water distribution pipe through one of a loose joint or a welding mode.

As a further description of the above technical solution: the water distribution pipe is a perforated water distribution pipe and consists of a plurality of water distribution branch pipes.

As a further description of the above technical solution: the air outlet pipe is of a three-way structure, and tail air control valves are connected to the two branch pipes.

As a further description of the above technical solution: the aeration component comprises a cross-shaped fixing frame and a spiral coil pipe which is embedded and fixed on the cross-shaped fixing frame, and a plurality of aeration heads are arranged on the upper surface of the spiral coil pipe at equal intervals.

As a further description of the above technical solution: aeration head includes bearing seat, connecting pipe and aeration stone, the bottom center department of bearing seat is provided with the connecting pipe, bearing seat upper surface rigid coupling has the aeration stone, integrated into one piece has the connector that the cooperation connecting pipe used on the spiral coil, connector and connecting pipe threaded connection.

As a further description of the above technical solution: the inside of the aeration head is provided with a cleaning component which is used for cleaning the surface of the aeration stone, the cleaning component comprises a rotating shaft, a bearing, a fixed rod and a turbine blade, the rotating shaft is arranged at the inner center of the connecting pipe, the bottom end of the rotating shaft is fixedly welded with the bearing, the bearing and the inner wall of the connecting pipe are fixedly welded through the fixed rod, the top welding that lies in the bearing in the pivot has a plurality of along the turbine blade of pivot outer wall axial distribution, the top of pivot is run through aeration stone and is extended to the outside and rigid coupling has the brush-holder stud, the brush-holder stud bottom is provided with the brush hair, the brush hair laminates with aeration stone outer wall mutually, the brush-holder stud is the arc structure, the brush-holder stud has stainless steel metal material to make.

As a further description of the above technical solution: an air pump is fixed on the outer wall of the ozone generator, and an air outlet of the air pump is communicated with an air inlet of the ozone generator.

As a further description of the above technical solution: the flow guide disc is of an inverted conical structure, and the outer diameter of the top end of the flow guide disc is larger than the inner diameter of the annular frame.

In the technical scheme, the ozone catalytic oxidation device for treating water pollution provided by the invention has the advantages that the airflow dispersion assembly is arranged between the packing layer and the aeration assembly in the ozone reaction column, and the ozone discharged by the aeration assembly can be dispersed and diffused through the airflow dispersion assembly, so that the contact efficiency of the ozone catalytic oxidation device with sewage is improved, the flowing range of ozone gas in the ozone reaction column is improved, the flowing speed of the ozone gas in the ozone reaction column is reduced, the oxidation capacity of ozone is improved, the utilization rate of the ozone is improved, and the input amount of the ozone is reduced.

Further, still be provided with the clearance subassembly in the aeration head, ozone gas through discharging into in the aeration head is cleared up the subassembly work as power drive, clears up the outer wall of aeration stone, ozone gas is cleared up the subassembly work as power drive on the one hand, can reduce ozone's velocity of flow, and on the other hand realizes the automatic clearance to the aeration stone, prevents that impurity from attaching to the aeration stone for a long time in the sewage, does not clear up and causes the bonding, influences the result of use of aeration stone.

Drawings

The invention is further explained below with reference to the figures and examples:

FIG. 1 is a schematic structural diagram of an ozone catalytic oxidation device for water pollution treatment according to an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of an airflow dispersing assembly according to an embodiment of the present invention;

FIG. 3 is a cross-sectional view of an airflow dispersion assembly provided by an embodiment of the invention;

FIG. 4 is a schematic view of the gas flow path of the gas flow dispersion assembly provided by an embodiment of the present invention;

fig. 5 is a schematic structural view of an aeration assembly provided in an embodiment of the present invention;

fig. 6 is a schematic structural diagram of an aeration head according to an embodiment of the present invention;

fig. 7 is a cross-sectional view of an aeration head according to an embodiment of the present invention;

FIG. 8 is a schematic structural diagram of a cleaning assembly according to an embodiment of the present invention;

fig. 9 is a schematic structural view of a water distribution pipe provided in an embodiment of the present invention.

In the figure: 1. a base; 2. an ozone generator; 3. an ozone reaction column; 31. a water inlet pipe; 32. a water distribution pipe; 33. a drain pipe; 34. an air outlet pipe; 35. a tail gas control valve; 321. a water distribution branch pipe; 4. an air pump; 5. an aeration assembly; 51. a cross-shaped fixing frame; 52. a helical coil; 521. a connector; 53. an aeration head; 531. a bearing seat; 532. a connecting pipe; 533. aerating stones; 534. a rotating shaft; 535. a bearing; 536. fixing the rod; 537. a turbine blade; 538. a brush bar; 539. brushing; 6. a pipeline; 7. an ozone analyzer; 8. an airflow dispersion assembly; 81. a dispersing ring; 811. an annular frame; 812. a first circular truncated cone cover; 82. a dispersion tray; 821. a circular disc; 822. a second circular truncated cone cover; 83. a first link; 84. a flow guide disc; 85. a second link; 9. a filler layer.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further explained below by combining the specific drawings. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.

Referring to fig. 1-9, an embodiment of the present invention provides a technical solution: the utility model provides an ozone catalytic oxidation device for water pollution treatment, including base 1 and bolt fastening ozone generator 2 and ozone reaction column 3 on base 1, ozone generator 2 is fixed with air pump 4 on the outer wall, the gas outlet of air pump 4 is linked together with the air inlet of ozone generator 2, absorb the air through air pump 4 and enter into ozone generator 2, as the raw materials air of ozone production, the air can be earlier through air cleaner to air deoiling, dehumidification, dust removal and disinfection processing in discharging into ozone generator 2, be provided with aeration subassembly 5 and packing layer 9 in the ozone reaction column 3, packing layer 9 comprises fretwork frame and the catalyst filler that sets up in the fretwork frame and be used for catalyzing the pollutant degradation, packing layer 9 is used for catalyzing the pollutant degradation, ozone generator 2's gas outlet and aeration subassembly 5 air inlet are linked together through pipeline 6, and be provided with ozone analyzer 7 on pipeline 6, ozone analyzer 7 is used for measuring the ozone concentration in the gas, the content that can be observed in the gas that ozone analyzer 7 audio-visual preparation of ozone generator 2, be convenient for master the operating condition of ozone generator 2 in real time, ozone analyzer 7 passes through ozone generator support, still include: the airflow dispersing assembly 8 is used for dispersing airflow discharged by the aeration assembly 5, the airflow dispersing assembly 8 is arranged in the ozone reaction column 3, the airflow dispersing assembly 8 is positioned between the packing layer 9 and the aeration assembly 5, the airflow dispersing assembly 8 comprises two dispersing rings 81, a dispersing disc 82 and a flow guide disc 84, the two dispersing rings 81 are arranged normally, the two dispersing rings 82 are arranged between the two dispersing rings 81, the flow guide disc 84 is positioned right below the bottommost dispersing ring 81, the dispersing rings 81 and the dispersing disc 82 are fixed by welding through a first connecting rod 83, the dispersing ring 81 and the flow guide disc 84 are fixed by welding through a second connecting rod 85, the dispersing ring 81 consists of an annular frame 811 and a first circular table cover 812 welded on the outer wall of the annular frame 811, and the opening at the bottom end 812 of the first circular table cover is larger than the opening at the top end, bonding is fixed between first round platform cover 812 outer wall bottom and the 3 inner walls of ozone reaction column, make and seal between first round platform cover 812 and the ozone reaction column 3, there is not the clearance, dispersion impeller 82 comprises circular disk 821 and the second round platform cover 822 of setting at circular disk 821 outer wall corner, second round platform cover 822 bottom opening is greater than the top opening, and there is the clearance between second round platform cover 822 bottom outer wall and the 3 inner walls of ozone reaction column, deflector 84 is the obconic structure, deflector 84 top external diameter is greater than the internal diameter of annular frame 811, the setting of obconic deflector 84, be used for direction gas flow to disperse all around, deflector 84 top external diameter is greater than the internal diameter of annular frame 811, make the unable inside through the annular frame 811 of bottom of air current rise.

Specifically, ozone gas is prepared by an ozone generator 2 and then is transmitted to an aeration assembly 5 arranged in an ozone reaction column 3 through a pipeline 6, the ozone gas is discharged through the aeration assembly 5, is contacted with sewage in the ozone reaction column 3 and is subjected to contact oxidation, when the ozone is discharged through the aeration assembly 5, the gas flow rises to be contacted with a flow guide disc 84 under the impact force of the ozone gas flow and the buoyancy of water, the gas flow is dispersed and ascended around an inverted cone-shaped flow guide disc 84, the ascending gas flow is contacted with a first round table cover 812 positioned at the bottom, so that the gas flow has impact of rotating and moving downwards, then under the buoyancy of the water, the gas flow rises through a central hole of an annular frame 811 positioned at the lower part and is contacted with a dispersion disc 82, the gas flow is dispersed again from the periphery of the dispersion disc 82 and upwards through the blockage of the dispersion disc 82, so that the secondary dispersion of the gas flow is carried out, the dispersed gas flow rises through an opening in the middle part 811 at the upper part, the gas flow dispersion assembly 8 realizes the flow guiding and dispersion of the whole ozone gas flow, the contact area and the efficiency of the sewage are improved, the flow speed of the ozone gas flow in the water is reduced, and the oxidation capacity of the ozone gas flow in the water is improved.

In another embodiment of the present invention, the bottom end of the outer wall of the ozone reaction column 3 is conductively connected with a water inlet pipe 31, the water inlet pipe 31 is connected with a water distribution pipe 32, the outer wall of the ozone reaction column 3 above the packing layer 9 is conductively connected with a water outlet pipe 33, the center of the top of the ozone reaction column 3 is conductively connected with a gas outlet pipe 34, the gas outlet pipe 34 is connected with a tail gas control valve 35, the water inlet pipe 31 is connected with the water distribution pipe 32 through one of a union joint or a welding mode, the water distribution pipe 32 is a perforated water distribution pipe, the water distribution pipe 32 is composed of a plurality of water distribution branch pipes 321, the gas outlet pipe 34 is a three-way structure, and the two branch pipes are both connected with the tail gas control valve 35.

Specifically, the water inlet pipe 31 is used for introducing the sewage to be treated into the ozone reaction column 3, and uniformly distributing water through the water distribution pipes 32 and the water distribution branch pipes 321, so that the sewage is better contacted with ozone, and the ozone dissolving efficiency is improved; the setting of drain pipe 33, a sewage discharge for after 3 interior processes of ozone reaction column, outlet duct 34 is the tee bend structure, can be used to discharge 3 interior gases in the ozone reaction column, because can contain ozone in the combustion gas, the accessible wherein arbitrary expert lets in gas and handles in the ozone destructor, ozone destructor theory of operation is that ozone decomposes into oxygen fast when the temperature risees, when needs detect tail gas ozone concentration, the accessible wherein arbitrary expert, connect tail gas control valve 35 and adjust tail gas exhaust's size and carry out tail gas detection.

In another embodiment of the present invention, the aeration assembly 5 includes a cross-shaped fixing frame 51 and a spiral coil 52 embedded and fixed on the cross-shaped fixing frame 51, a plurality of aeration heads 53 are disposed on the upper surface of the spiral coil 52 at equal intervals, each aeration head 53 includes a support base 531, a connection pipe 532 and an aeration stone 533, the connection pipe 532 is disposed at the center of the bottom of the support base 531, the aeration stone 533 is fixedly connected to the upper surface of the support base 531, a connection head 521 used in cooperation with the connection pipe 532 is integrally formed on the spiral coil 52, and the connection head 521 is in threaded connection with the connection pipe 532.

By arranging the spiral coil 52 and arranging the plurality of aeration heads 53 on the spiral coil 52 at equal intervals, the aeration heads 53 are relatively uniformly arranged in the ozone reaction column 3 by the structural design, and the contact area of ozone gas discharged by the aeration heads 53 and sewage is increased.

In still another embodiment of the present invention, a cleaning assembly is disposed in the aerator 53, and is used for cleaning the surface of the aerator stone 533, the cleaning assembly includes a rotating shaft 534, a bearing 535, a fixing rod 536, and turbine blades 537, the rotating shaft 534 is disposed at the center of the inside of the connecting pipe 532, the bottom end of the rotating shaft 534 is welded and fixed with the bearing 535, the bearing 535 and the inner wall of the connecting pipe 532 are welded and fixed by the fixing rod 536, a plurality of turbine blades 537 axially distributed along the outer wall of the rotating shaft 534 are welded on the rotating shaft 534 above the bearing 535, the top end of the rotating shaft 534 extends to the outside through the aerator stone 533 and is fixedly connected with a brush bar 538, the bottom end of the brush bar 538 is provided with bristles 539, the bristles 539 are attached to the outer wall of the aerator stone 533, the brush bar 538 is an arc-shaped structure, and the brush bar 538 is made of stainless steel metal material.

Specifically, when the ozone gas that ozone generator 2 prepared is used, the ozone gas is transmitted into spiral coil 52 through pipeline 6, then enters into connecting pipe 532 through spiral coil 52, ozone gas pushes turbine blades 537 to rotate, turbine blades 537 drive rotating shaft 534 to rotate, brush rod 538 is driven to move through rotating shaft 534, the impurities attached to the surface of aeration stone 533 can be cleaned through bristles 539 arranged on brush rod 538, the surface of aeration stone 533 is prevented from not being cleaned for a long time, the impurities are attached to the surface of aeration stone 533 for a long time to cause blockage, and the air outlet effect of aeration stone 533 is influenced.

The foregoing shows and describes the general principles, principal features and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are given by way of illustration of the principles of the present invention, and that various changes and modifications may be made without departing from the spirit and scope of the invention as defined by the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a water pollution administers uses ozone catalytic oxidation device, includes base (1) and ozone generator (2) and ozone reaction column (3) of bolt fastening on base (1), be provided with aeration subassembly (5) and packing layer (9) in ozone reaction column (3), the gas outlet of ozone generator (2) with aeration subassembly (5) air inlet is linked together through pipeline (6), and is provided with ozone analyzer (7) on pipeline (6), its characterized in that still includes: the airflow dispersing assembly (8) is used for dispersing the airflow discharged by the aeration assembly (5), the airflow dispersing assembly (8) is arranged in the ozone reaction column (3), and the airflow dispersing assembly (8) is positioned between the packing layer (9) and the aeration assembly (5);

the airflow dispersion assembly (8) comprises two dispersion rings (81) which are arranged at ordinary times, a dispersion disc (82) arranged between the two dispersion rings (81), and a flow guide disc (84) positioned right below the bottommost dispersion ring (81), the dispersion rings (81) and the dispersion disc (82) are welded and fixed through first connecting rods (83), and the dispersion rings (81) positioned at the bottommost end and the flow guide disc (84) are welded and fixed through second connecting rods (85);

the dispersing ring (81) consists of an annular frame (811) and a first circular table cover (812) welded on the outer wall of the annular frame (811), the bottom end opening of the first circular table cover (812) is larger than the top end opening, and the bottom end of the outer wall of the first circular table cover (812) is fixedly bonded with the inner wall of the ozone reaction column (3);

the dispersion disc (82) consists of a circular disc (821) and second round table covers (822) arranged at corners of the outer wall of the circular disc (821), the bottom end opening of each second round table cover (822) is larger than the top end opening, and a gap is reserved between the outer wall of the bottom end of each second round table cover (822) and the inner wall of the ozone reaction column (3);

the flow guide disc (84) is of an inverted conical structure, and the outer diameter of the top end of the flow guide disc (84) is larger than the inner diameter of the annular frame (811).

2. The catalytic ozonation device for water pollution treatment according to claim 1, wherein a water inlet pipe (31) is conductively connected to the bottom end of the outer wall of the ozone reaction column (3), the water inlet pipe (31) is connected to a water distribution pipe (32), a water discharge pipe (33) is conductively connected to the outer wall of the ozone reaction column (3) above the packing layer (9), an air outlet pipe (34) is conductively connected to the center of the top of the ozone reaction column (3), and the air outlet pipe (34) is connected to a tail gas control valve (35).

3. The catalytic ozonation device for water pollution control according to claim 2, wherein the water inlet pipe (31) is connected to the water distribution pipe (32) by one of a loose joint or welding.

4. The catalytic ozonation device for water pollution control according to claim 2, wherein the water distribution pipe (32) is a perforated water distribution pipe, and the water distribution pipe (32) is composed of a plurality of water distribution branch pipes (321).

5. The catalytic ozonation device for water pollution treatment according to claim 2, wherein the outlet pipe (34) has a three-way structure, and two branch pipes are connected to an exhaust control valve (35).

6. The catalytic ozonation device for water pollution treatment according to claim 2, wherein the aeration assembly (5) comprises a cross-shaped fixing frame (51) and a spiral coil (52) embedded and fixed on the cross-shaped fixing frame (51), and a plurality of aeration heads (53) are arranged on the upper surface of the spiral coil (52) at equal intervals.

7. The catalytic ozonation device for water pollution treatment according to claim 6, wherein the aeration head (53) comprises a bearing seat (531), a connecting pipe (532) and an aeration stone (533), the connecting pipe (532) is arranged at the center of the bottom of the bearing seat (531), the aeration stone (533) is fixedly connected to the upper surface of the bearing seat (531), the spiral coil (52) is integrally formed with a connector (521) used in cooperation with the connecting pipe (532), and the connector (521) is in threaded connection with the connecting pipe (532).

8. The catalytic ozonation device for water pollution abatement according to claim 6, wherein a cleaning assembly is disposed in the aeration head (53) and used for cleaning the surface of the aeration stone (533), the cleaning assembly comprises a rotating shaft (534), a bearing (535), a fixing rod (536) and turbine blades (537), the rotating shaft (534) is disposed at the inner center of the connecting pipe (532), the bearing (535) is welded and fixed to the bottom end of the rotating shaft (534), the bearing (535) and the inner wall of the connecting pipe (532) are welded and fixed by the fixing rod (536), a plurality of turbine blades (537) axially distributed along the outer wall of the rotating shaft (534) are welded on the rotating shaft (534) above the bearing (535), the top end of the rotating shaft (534) extends to the outer side through the aeration stone (533) and is fixedly connected with a brush rod (538), the brush rod (538) is disposed at the bottom end of the brush rod (538), the brush rod (539) is attached to the outer wall of the aeration stone (533), the brush rod (538) has an arc-shaped structure, and the brush rod (538) is made of stainless steel.

9. The catalytic ozonation device for water pollution treatment according to claim 1, wherein an air pump (4) is fixed on the outer wall of the ozone generator (2), and an air outlet of the air pump (4) is communicated with an air inlet of the ozone generator (2).