Catalytic ozonation advanced treatment device for oil refining sewage

Abstract

The utility model relates to the technical field of sewage treatment, in particular to a catalytic ozonation advanced treatment device for oil refining sewage, which is used for carrying out two-stage catalytic oxidation treatment on the oil refining sewage, so that the contact area of the oil refining sewage and ozone is larger, and the catalytic oxidation efficiency is improved. Comprising a sewage tank, a sewage pipe, an ozone generator and an oxidation tank, the mixing nozzle is mounted at the bottom of the oxidation tank, the output end of the ozone generator is connected with the input end of the mixing nozzle, the output end of the sewage pipe extends into the mixing nozzle, the conical coaming is mounted at the upper middle part of an oxidation chamber of the oxidation tank, the upper partition plate is mounted on the top wall of the oxidation tank, and the discharge pipe is mounted on the lower middle part of the oxidation chamber. The upper partition plate is located between the outer wall of the conical coaming and the inner wall of the oxidation tank, a gap is formed between the lower edge of the upper partition plate and the bottom of the conical coaming, the discharge pipe is installed on the outer wall of the oxidation tank, and the input end of the discharge pipe extends between the upper partition plate and the oxidation tank and is lower than an upper port of the conical coaming.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of sewage treatment especially relates to a kind of oil refining sewage ozone catalytic oxidation advanced treatment device. BACKGROUND

[0002] Oil refining sewage usually needs to be carried out ozone catalytic oxidation advanced treatment, and the prior art discloses a kind of ozone catalytic oxidation tower for sewage advanced treatment, the ozone catalytic oxidation tower includes tower body, and the inside of tower body is provided with perforated water distribution mechanism from top to bottom, catalytic mechanism, backwash air distribution mechanism, filter mechanism and ozone air distribution mechanism, ozone air distribution mechanism side is provided with water outlet, and lower side is provided with backwash inlet, and the upper side of perforated water distribution mechanism is provided with inlet and backwash drain, and the height of backwash drain pipe top is lower than the height of inlet pipe bottom, and the top of tower body is provided with gas outlet;The sewage flow in the inside of tower body and ozone contact in different directions, and the remaining refractory organic matter in water can be fully oxidized and removed by ozone, and catalyst can significantly improve the ability of ozone to generate hydroxyl radical.

[0003] The above-mentioned ozone catalytic oxidation tower increases the contact efficiency of ozone and pollutants in sewage by using the convection of sewage and ozone, but the sewage and ozone only contact and react once in the tower body, and the volume of ozone bubbles filled in the sewage is small, which leads to small overall contact area of sewage and ozone bubbles, resulting in low catalytic oxidation efficiency. UTILITY MODEL CONTENT

[0004] To solve the above technical problems, the utility model provides a kind of oil refining sewage, and the contact area of oil refining sewage and ozone is larger, and the catalytic oxidation efficiency of a kind of oil refining sewage ozone catalytic oxidation advanced treatment device for two-stage catalytic oxidation treatment of oil refining sewage is improved.

[0005] The utility model discloses a kind of oil refining sewage ozone catalytic oxidation advanced treatment device, including sewage tank, sewage pipe, ozone generator and oxidation tank, the inside of sewage tank is provided with sewage chamber, the input end of sewage pipe is inserted into the bottom of the sewage chamber of sewage tank, the inside of oxidation tank is provided with oxidation chamber, and ozone generator is used to generate ozone;It further includes mixing spray head, conical coaming, upper baffle and discharge pipe, mixing spray head is installed at the bottom of oxidation tank, the upper end of mixing spray head is inserted into the bottom of the oxidation chamber of oxidation tank, the output end of ozone generator is connected with the input end of mixing spray head, the output end of sewage pipe is inserted into mixing spray head, and the output port of sewage pipe is towards the output port of mixing spray head, conical coaming is inverted conical, conical coaming is installed in the upper portion of the oxidation chamber of oxidation tank, the lower edge of conical coaming is connected with the inner wall of oxidation tank, the upper end of the middle portion of conical coaming is provided with opening, upper baffle is installed on the top wall of oxidation tank, upper baffle is located between the outer wall of conical coaming and the inner wall of oxidation tank, gap is provided between the lower edge of upper baffle and the bottom of conical coaming, discharge pipe is installed on the outer wall of oxidation tank, the input end of discharge pipe is inserted between upper baffle and oxidation tank, and the input end of discharge pipe is lower than the upper port of conical coaming;The surface of conical coaming and upper baffle is provided with catalyst layer, when working, oil refining sewage in sewage tank is input into mixing spray head by sewage pipe, ozone generator generates ozone and is conveyed into mixing spray head at high speed and carries oil refining sewage and is sprayed into the lower portion of the oxidation chamber of oxidation tank in mist shape by mixing spray head, because the water mist particle of oil refining sewage is small and is in ozone atmosphere, so that the water mist particle of oil refining sewage is fully contacted with ozone and is treated by primary catalytic oxidation, after the water mist of oil refining sewage fills the lower portion of the oxidation chamber of oxidation tank, the water mist of oil refining sewage is raised and enters between conical coaming and upper baffle under the driving of ozone airflow, cooling system is arranged at the top of oxidation tank, so that the water mist of oil refining sewage is condensed after gathering and falls between conical coaming and oxidation tank, and the condensed oil refining sewage containing a large number of ozone bubbles is treated by catalytic oxidation in the space between conical coaming and oxidation tank, the condensed oil refining sewage enters between upper baffle and oxidation tank through the gap between upper baffle and conical coaming, and the oil refining sewage treated by catalytic oxidation is discharged through discharge pipe, compared with prior art, can carry out two-stage catalytic oxidation treatment of primary and depth to oil refining sewage, and make oil refining sewage in atomized state in ozone atmosphere carry out catalytic oxidation, the contact area of oil refining sewage and ozone is larger, improve catalytic oxidation efficiency.

[0006] Preferably, the air inlet cover, the aeration ring and the exhaust pipe are further included, the air inlet cover is installed inside the upper baffle, a plurality of air inlet holes are arranged on the air inlet cover, the aeration ring is installed between the conical baffle and the oxidation tank, the aeration ring is located below the upper baffle, a plurality of aeration holes are arranged on the aeration ring, the air inlet cover and the aeration ring are connected through a pipeline, the exhaust pipe is installed on the oxidation tank, and an input end of the exhaust pipe is located between the upper baffle and the oxidation tank; during operation, since the air pressure at the air inlet cover is higher than that at the input end of the exhaust pipe, the ozone gas between the upper baffles enters the air inlet cover through the plurality of air inlet holes, is input into the aeration ring through the pipeline, is uniformly distributed in the form of bubbles through the plurality of aeration holes of the aeration ring to the bottom of the oil refining sewage between the conical baffle and the oxidation tank, and is fully mixed and catalytically oxidized with the oil refining sewage as the ozone bubbles rise, residual gas between the upper baffle and the oxidation tank is discharged through the exhaust pipe, ozone aeration deep treatment of the oil refining sewage is realized, and working efficiency is improved.

[0007] Preferably, the flow guide block is further included, the flow guide block is installed on the top wall of the oxidation tank, the flow guide block is located above the opening of the conical baffle, and the flow guide block is in the form of an inverted cone; a cooling system is arranged in the flow guide block, so that the flow guide block condenses the water mist of the oil refining sewage, and at the same time, the flow guide block guides the water mist of the oil refining sewage following the ozone airflow to the outside of the conical baffle, and the condensation and collection efficiency of the water mist of the oil refining sewage is improved.

[0008] Preferably, the flow guide cylinder is further included, the flow guide cylinder is installed at the lower part of the oxidation chamber of the oxidation tank, the flow guide cylinder is located above the output end of the mixing nozzle, the flow guide cylinder is in the form of a horn, a gap is arranged between the lower edge of the flow guide cylinder and the bottom wall of the oxidation tank, the diameter of the lower end of the flow guide cylinder is greater than that of the upper end, the flow guide cylinder gathers and guides the ozone water mist sprayed by the mixing nozzle, and can suck the ozone water mist outside the lower edge of the flow guide cylinder at the bottom of the oxidation chamber of the oxidation tank into the flow guide cylinder, so that the ozone water mist at the lower part of the oxidation chamber of the oxidation tank flows circularly, and the catalytic oxidation efficiency of the ozone water mist is improved.

[0009] Preferably, the lower baffle, the three-way valve and the branch pipe are further included, the lower baffle is installed at the bottom of the oxidation chamber of the oxidation tank, the lower baffle is arranged around the mixing nozzle, the lower baffle is located below the inside of the flow guide cylinder, a gap is arranged between the upper end of the lower baffle and the flow guide cylinder, the three-way valve is installed on the sewage pipe, the output end of the branch pipe is communicated with the sewage pipe through the three-way valve, the input end of the branch pipe extends into the bottom of the oxidation chamber of the oxidation tank, and the branch pipe is located outside the lower baffle; the lower baffle blocks the oil refining sewage condensed at the bottom of the oxidation chamber of the oxidation tank, the three-way valve is switched, so that the oil refining sewage blocked by the lower baffle enters the sewage pipe through the branch pipe and the three-way valve, and is input into the mixing nozzle through the sewage pipe, the oil refining sewage condensed at the bottom of the oxidation chamber of the oxidation tank is circularly treated, and the catalytic oxidation efficiency of the ozone water mist is improved.

[0010] Preferably, the liquid level sensor is installed at the bottom of the oxidation chamber of the oxidation tank, and the liquid level sensor is electrically connected with the controller of the three-way valve; the liquid level sensor detects the water level of the condensed refinery sewage at the bottom of the oxidation chamber of the oxidation tank, and sends an electrical signal to the controller of the three-way valve when the water level reaches a threshold value, so that the three-way valve is actuated to make the branch pipe convey the refinery sewage to the sewage pipe through the three-way valve, thereby realizing the recycling treatment of the refinery sewage condensed at the bottom of the oxidation chamber and improving the automation degree.

[0011] Preferably, the filter filler plate is installed at the lower part of the sewage chamber of the sewage tank, the input end of the sewage pipe is located below the filter filler plate, and the upper part of the sewage tank is provided with the water inlet pipe; the upper part of the filter filler plate is filled with microbial mud, the refinery sewage is input into the sewage chamber of the sewage tank through the water inlet pipe, so that the refinery sewage is subjected to microbial treatment, the refinery sewage subjected to the microbial treatment seeps through the filter filler plate and is discharged through the sewage pipe, and the pretreatment of the refinery sewage is realized.

[0012] Compared with the prior art, the utility model has the advantages that: the surfaces of the conical coaming and the upper baffle are provided with catalyst layers, when working, the refinery sewage in the sewage tank is input into the mixing nozzle through the sewage pipe, the ozone generator generates ozone and high -speed delivery to the mixing nozzle and carries refinery sewage and is sprayed into the lower part of the oxidation chamber of the oxidation tank in the mist shape, because the refinery sewage water mist particle is small and is in the ozone atmosphere, makes the refinery sewage water mist particle and ozone fully contacts and carries on the preliminary catalytic oxidation treatment, after the refinery sewage water mist fills the lower part of the oxidation chamber of the oxidation tank, under the driving of ozone gas flow, refinery sewage water mist rises and enters between the conical coaming and the upper baffle, the cooling system is arranged at the top of the oxidation tank, makes the refinery sewage water mist gather and condenses and falls and gathers between the conical coaming and the oxidation tank, and the condensed refinery sewage containing a large amount of ozone bubbles carries on the catalytic oxidation depth treatment in the space between the conical coaming and the oxidation tank, the condensed refinery sewage enters between the upper baffle and the oxidation tank through the gap between the upper baffle and the conical coaming, the refinery sewage treated by catalytic oxidation depth is discharged through the discharge pipe, compared with the prior art, can carry out two -stage catalytic oxidation treatment of refinery sewage to primary and depth, and makes refinery sewage in the atomized state in the ozone atmosphere and carries on the catalytic oxidation, refinery sewage and ozone contact area are larger, improve the catalytic oxidation efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is the front section structure schematic diagram of the utility model;

[0014] Figure 2 It is the local section structure schematic diagram of the utility model;

[0015] Figure 3 It is the axonometric structure schematic diagram of the utility model;

[0016] Figure 4 is the structural schematic view of the structure of sewage pipe, mixing spray head, flow guide cylinder, lower coaming, three-way valve and branch pipe etc.;

[0017] Figure 5 is the structural schematic view of the structure of conical coaming, upper baffle, air inlet cover, aeration ring and flow guide block etc.;

[0018] Figure 6 is the structural schematic view of the structure of sewage tank, sewage pipe and filter filler plate etc.

[0019] Markings in the drawings: 1, sewage tank; 2, sewage pipe; 3, ozone generator; 4, oxidation tank; 5, mixing spray head; 6, conical coaming; 7, upper baffle; 8, discharge pipe; 9, air inlet cover; 10, aeration ring; 11, exhaust pipe; 12, flow guide block; 13, flow guide cylinder; 14, lower coaming; 15, three-way valve; 16, branch pipe; 17, liquid level sensor; 18, filter filler plate. DETAILED DESCRIPTION

[0020] In order to facilitate the understanding of the present application, the present application will be described more fully below with reference to the accompanying drawings. The present application can be realized in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present application more thorough and comprehensive. Example 1

[0021] As Figure 1 , Figure 2 , Figure 3 and Figure 5As shown, a deep treatment device for ozone catalytic oxidation of oil refinery wastewater includes a wastewater tank 1, a wastewater pipe 2, an ozone generator 3, and an oxidation tank 4. The wastewater tank 1 has a wastewater chamber inside, and the input end of the wastewater pipe 2 extends into the bottom of the wastewater chamber of the wastewater tank 1. The oxidation tank 4 has an oxidation chamber inside, and the ozone generator 3 generates ozone. It also includes a mixing nozzle 5, a conical baffle 6, an upper partition 7, and a discharge pipe 8. The mixing nozzle 5 is installed at the bottom of the oxidation tank 4, and its upper end extends into the bottom of the oxidation chamber of the oxidation tank 4. The output end of the ozone generator 3 is connected to the input end of the mixing nozzle 5. The output end of the wastewater pipe 2 extends into the mixing nozzle 5, and the output port of the wastewater pipe 2 faces the output port of the mixing nozzle 5. The conical baffle 6 is an inverted cone shape and is installed in the upper part of the oxidation chamber of the oxidation tank 4. The lower edge of the conical baffle 6 is connected to the inner wall of the oxidation tank 4, and an opening is provided at the upper middle part of the conical baffle 6. The upper partition 7 is installed on the top wall of the oxidation tank 4. The upper baffle 7 is located between the outer wall of the conical enclosure 6 and the inner wall of the oxidation tank 4. A gap is provided between the lower edge of the upper baffle 7 and the bottom of the conical enclosure 6. The discharge pipe 8 is installed on the outer wall of the oxidation tank 4, and the inlet end of the discharge pipe 8 extends between the upper baffle 7 and the oxidation tank 4. The inlet end of the discharge pipe 8 is lower than the upper port of the conical enclosure 6. The system also includes an air inlet hood 9, an aeration ring 10, and an exhaust pipe 11. The air inlet hood 9 is installed inside the upper baffle 7 and has multiple air inlet holes for aeration. A ring 10 is installed between the conical enclosure 6 and the oxidation tank 4. The aeration ring 10 is located below the upper partition 7. Multiple aeration holes are provided on the aeration ring 10. The air inlet hood 9 and the aeration ring 10 are connected by a pipeline. The exhaust pipe 11 is installed on the oxidation tank 4. The input end of the exhaust pipe 11 is located between the upper partition 7 and the oxidation tank 4. It also includes a guide block 12, which is installed on the top wall of the oxidation tank 4. The guide block 12 is located above the opening of the conical enclosure 6. The guide block 12 is inverted conical.

[0022] The surfaces of the conical enclosure 6 and the upper baffle 7 are provided with catalyst layers. In operation, the refinery wastewater in the wastewater tank 1 is input into the mixing nozzle 5 through the wastewater pipe 2. The ozone generator 3 generates ozone and sends it into the mixing nozzle 5 at high speed, and carries the refinery wastewater into the oxidation tank 4 in the form of mist. Since the water mist particles of the refinery wastewater are small and in the ozone atmosphere, the water mist particles of the refinery wastewater are fully contacted with ozone for primary catalytic oxidation treatment. After the water mist of the refinery wastewater fills the lower part of the oxidation chamber of the oxidation tank 4, the water mist of the refinery wastewater is lifted and enters between the conical enclosure 6 and the upper baffle 7 under the driving of the ozone gas flow. The cooling system provided in the flow guide block 12 condenses the water mist of the refinery wastewater, and at the same time, the flow guide block 12 guides the water mist of the refinery wastewater following the ozone gas flow to the outside of the conical enclosure 6, so that the water mist of the refinery wastewater is condensed and falls and gathers between the conical enclosure 6 and the oxidation tank 4. The condensed refinery wastewater enters between the upper baffle 7 and the oxidation tank 4 through the gap between the upper baffle 7 and the conical enclosure 6. Since the air pressure at the air inlet hood 9 is higher than the air pressure at the input end of the exhaust pipe 11, the ozone gas between the upper baffle 7 enters the air inlet hood 9 through the multiple air inlet holes, and then is input into the aeration ring 10 through the pipeline, and is uniformly distributed in the form of bubbles at the bottom of the refinery wastewater between the conical enclosure 6 and the oxidation tank 4 through the multiple aeration holes of the aeration ring 10, and is fully mixed with the refinery wastewater and subjected to catalytic oxidation depth treatment as the ozone bubbles rise. The residual gas between the upper baffle 7 and the oxidation tank 4 is discharged through the exhaust pipe 11, realizing ozone aeration depth treatment of the refinery wastewater. The refinery wastewater subjected to catalytic oxidation depth treatment is discharged through the discharge pipe 8. Compared with the prior art, the refinery wastewater can be subjected to two-stage catalytic oxidation treatment of primary and depth, and the refinery wastewater is subjected to catalytic oxidation in the mist state in the ozone atmosphere, the contact area of the refinery wastewater with ozone is larger, and the catalytic oxidation efficiency is improved. Example 2

[0023] As Figure 1 , Figure 2 and Figure 4As shown, based on Embodiment 1, it also includes a guide tube 13, which is installed at the lower part of the oxidation chamber of the oxidation tank 4. The guide tube 13 is located above the output end of the mixing nozzle 5. The guide tube 13 is trumpet-shaped, and a gap is provided between the lower edge of the guide tube 13 and the bottom wall of the oxidation tank 4. The diameter of the lower end of the guide tube 13 is larger than the diameter of the upper end. It also includes a lower surrounding plate 14, a three-way valve 15, and a branch pipe 16. The lower surrounding plate 14 is installed at the bottom of the oxidation chamber of the oxidation tank 4 and is arranged around the mixing nozzle 5. The lower enclosure 14 is located below the inner side of the guide tube 13. A gap is provided between the upper end of the lower enclosure 14 and the guide tube 13. The three-way valve 15 is installed on the sewage pipe 2. The output end of the branch pipe 16 is connected to the sewage pipe 2 through the three-way valve 15. The input end of the branch pipe 16 extends into the bottom of the oxidation chamber of the oxidation tank 4. The branch pipe 16 is located outside the lower enclosure 14. It also includes a liquid level sensor 17, which is installed at the bottom of the oxidation chamber of the oxidation tank 4. The liquid level sensor 17 is electrically connected to the controller of the three-way valve 15.

[0024] The guide tube 13 gathers and guides the ozone water mist sprayed from the mixing nozzle 5, and can also draw the ozone water mist from the lower edge of the guide tube 13 at the bottom of the oxidation chamber of the oxidation tank 4 into the guide tube 13, so that the ozone water mist in the lower part of the oxidation chamber of the oxidation tank 4 circulates, improving the catalytic oxidation efficiency of the ozone water mist. The lower enclosure plate 14 blocks the refining wastewater condensed at the bottom of the oxidation chamber of the oxidation tank 4. The level sensor 17 detects the water level of the refining wastewater condensed at the bottom of the oxidation chamber of the oxidation tank 4. When the water level reaches the threshold, the level sensor 17 sends an electrical signal to the controller of the three-way valve 15. The three-way valve 15 switches, so that the refining wastewater blocked by the lower enclosure plate 14 enters the sewage pipe 2 through the branch pipe 16 and the three-way valve 15, and is input into the mixing nozzle 5 through the sewage pipe 2, so as to circulate the refining wastewater condensed at the bottom of the oxidation chamber of the oxidation tank 4, improve the catalytic oxidation efficiency of the ozone water mist, and realize the automatic circulation treatment of the refining wastewater condensed at the bottom of the oxidation chamber. Example 3

[0025] like Figure 1 , Figure 2 and Figure 6 As shown, based on Embodiment 1, a filter packing plate 18 is also included. The filter packing plate 18 is installed in the lower part of the sewage chamber of the sewage tank 1. The inlet end of the sewage pipe 2 is located below the filter packing plate 18. An inlet pipe is provided in the upper part of the sewage tank 1. Microbial sludge is filled above the filter packing plate 18. Refining wastewater is input into the sewage chamber of the sewage tank 1 through the inlet pipe, so that the refining wastewater undergoes microbial treatment. The microbially treated refining wastewater permeates through the filter packing plate 18 and is discharged through the sewage pipe 2, thereby realizing the pretreatment of refining wastewater.

[0026] like Figures 1 to 6As shown, the oil refining sewage ozone catalytic oxidation advanced treatment device of the utility model, when working, first, the oil refining sewage in the sewage tank 1 is infiltrated through the filter filler plate 18 after being treated by microorganism and is input into the mixing spray head 5 through the sewage pipe 2, the ozone generator 3 generates ozone and is high-speed transported into the mixing spray head 5 and carries the oil refining sewage and is sprayed into the lower part of the oxidation chamber of the oxidation tank 4 in mist form through the mixing spray head 5, because the water mist particle of the oil refining sewage is small and is in the ozone atmosphere, the water mist particle of the oil refining sewage is fully contacted with ozone and is treated by primary catalytic oxidation, then, the water mist of the oil refining sewage fills the lower part of the oxidation chamber of the oxidation tank 4, under the driving of the ozone gas flow, the water mist of the oil refining sewage rises and enters between the conical coaming 6 and the upper baffle 7, the flow guide block 12 makes the water mist of the oil refining sewage flow and condenses, then, the water mist condenses and falls and is gathered between the conical coaming 6 and the oxidation tank 4, the condensed oil refining sewage enters between the upper baffle 7 and the oxidation tank 4 through the gap between the upper baffle 7 and the conical coaming 6, the ozone gas between the upper baffle 7 enters the air inlet hood 9 through multiple air inlet holes and is input into the aeration ring 10 through the pipeline, and is uniformly distributed in the form of bubbles at the bottom of the oil refining sewage between the conical coaming 6 and the oxidation tank 4 through multiple aeration holes of the aeration ring 10, and fully mixes and catalytically oxidizes the oil refining sewage with the rising ozone bubbles, finally, the residual gas between the upper baffle 7 and the oxidation tank 4 is discharged through the exhaust pipe 11, and the oil refining sewage treated by catalytic oxidation is discharged through the discharge pipe 8.

[0027] The main functions realized by the utility model are as follows:

[0028] 1. Two-stage catalytic oxidation treatment is carried out on the oil refining sewage, and the catalytic oxidation efficiency is improved.

[0029] 2. The oil refining sewage is catalytically oxidized in the ozone atmosphere in a mist state, the contact area between the oil refining sewage and ozone is larger, and the catalytic oxidation efficiency is improved.

[0030] 3. The ozone aeration advanced treatment of the oil refining sewage can be carried out.

[0031] 4. The water mist of the oil refining sewage can be treated by cyclic catalytic oxidation.

[0032] The installation mode, connection mode or setting mode of the oil refining sewage ozone catalytic oxidation advanced treatment device of the utility model are all common mechanical modes, as long as the beneficial effects can be achieved, they can be implemented; the sewage tank 1, the sewage pipe 2, the ozone generator 3, the oxidation tank 4, the mixing spray head 5, the air inlet hood 9, the aeration ring 10, the three-way valve 15, the liquid level sensor 17 and the filter filler plate 18 of the oil refining sewage ozone catalytic oxidation advanced treatment device of the utility model are purchased on the market, and the technical personnel in the industry only need to install and operate according to the attached instruction manual, without the creative labor of the technical personnel in the field.

[0033] All technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs unless otherwise specifically defined herein. The terminology used in the description herein is for describing particular embodiments only and is not intended to be limiting of the application. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0034] The preferred embodiments of the present application have been described above with the aid of drawing only. Obviously, many modifications and improvements can be made by those skilled in the art without departing from the technical principles of the application. Therefore, the above disclosure merely prefers some embodiments of the application, but not all possible embodiments thereof.

Claims

1. A deep treatment device for ozone catalytic oxidation of oil refinery wastewater, comprising a wastewater tank (1), a wastewater pipe (2), an ozone generator (3), and an oxidation tank (4), wherein the wastewater tank (1) is provided with a wastewater chamber, the input end of the wastewater pipe (2) extends into the bottom of the wastewater chamber of the wastewater tank (1), the oxidation tank (4) is provided with an oxidation chamber, and the ozone generator (3) is used to generate ozone; characterized in that, It also includes a mixing nozzle (5), a conical baffle (6), an upper baffle (7), and a discharge pipe (8). The mixing nozzle (5) is installed at the bottom of the oxidation tank (4), and the upper end of the mixing nozzle (5) extends into the bottom of the oxidation chamber of the oxidation tank (4). The output end of the ozone generator (3) is connected to the input end of the mixing nozzle (5). The output end of the sewage pipe (2) extends into the mixing nozzle (5), and the output port of the sewage pipe (2) faces the output port of the mixing nozzle (5). The conical baffle (6) is an inverted cone shape and is installed in the upper part of the oxidation chamber of the oxidation tank (4). The lower edge of the conical enclosure (6) is connected to the inner wall of the oxidation tank (4). An opening is provided at the upper middle part of the conical enclosure (6). The upper partition (7) is installed on the top wall of the oxidation tank (4). The upper partition (7) is located between the outer wall of the conical enclosure (6) and the inner wall of the oxidation tank (4). A gap is provided between the lower edge of the upper partition (7) and the bottom of the conical enclosure (6). The discharge pipe (8) is installed on the outer wall of the oxidation tank (4). The input end of the discharge pipe (8) extends between the upper partition (7) and the oxidation tank (4). The input end of the discharge pipe (8) is lower than the upper port of the conical enclosure (6).

2. The ozone catalytic oxidation deep treatment device for oil refinery wastewater as described in claim 1, characterized in that, It also includes an air intake hood (9), an aeration ring (10), and an exhaust pipe (11). The air intake hood (9) is installed inside the upper partition (7) and has multiple air intake holes. The aeration ring (10) is installed between the conical partition (6) and the oxidation tank (4). The aeration ring (10) is located below the upper partition (7) and has multiple aeration holes. The air intake hood (9) and the aeration ring (10) are connected by a pipeline. The exhaust pipe (11) is installed on the oxidation tank (4) and the input end of the exhaust pipe (11) is located between the upper partition (7) and the oxidation tank (4).

3. The ozone catalytic oxidation deep treatment device for oil refinery wastewater as described in claim 1, characterized in that, It also includes a guide block (12), which is installed on the top wall of the oxidation tank (4). The guide block (12) is located above the opening of the conical enclosure (6) and is inverted conical.

4. The ozone catalytic oxidation deep treatment device for oil refinery wastewater as described in claim 1, characterized in that, It also includes a guide tube (13), which is installed in the lower part of the oxidation chamber of the oxidation tank (4). The guide tube (13) is located above the output end of the mixing nozzle (5). The guide tube (13) is trumpet-shaped. A gap is set between the lower edge of the guide tube (13) and the bottom wall of the oxidation tank (4). The diameter of the lower end of the guide tube (13) is larger than the diameter of the upper end.

5. The ozone catalytic oxidation deep treatment device for oil refinery wastewater as described in claim 4, characterized in that, It also includes a lower enclosure plate (14), a three-way valve (15) and a branch pipe (16). The lower enclosure plate (14) is installed at the bottom of the oxidation chamber of the oxidation tank (4). The lower enclosure plate (14) is arranged around the mixing nozzle (5). The lower enclosure plate (14) is located below the inner side of the guide tube (13). A gap is set between the upper end of the lower enclosure plate (14) and the guide tube (13). The three-way valve (15) is installed on the sewage pipe (2). The output end of the branch pipe (16) is connected to the sewage pipe (2) through the three-way valve (15). The input end of the branch pipe (16) extends into the bottom of the oxidation chamber of the oxidation tank (4). The branch pipe (16) is located outside the lower enclosure plate (14).

6. The ozone catalytic oxidation deep treatment device for oil refinery wastewater as described in claim 5, characterized in that, It also includes a level sensor (17), which is installed at the bottom of the oxidation chamber of the oxidation tank (4) and is electrically connected to the controller of the three-way valve (15).

7. The ozone catalytic oxidation deep treatment device for oil refinery wastewater as described in claim 1, characterized in that, It also includes a filter packing plate (18), which is installed in the lower part of the sewage chamber of the sewage tank (1). The inlet end of the sewage pipe (2) is located below the filter packing plate (18), and an inlet pipe is provided in the upper part of the sewage tank (1).

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