Ozone catalytic reactor

Abstract

The utility model relates to an ozone catalytic reactor. The ozone catalytic reactor comprises a reactor tank body, a water distribution system, a fluidized bed system and a three-phase separator, the three-phase separator is configured to be positioned above the fluidized bed system in the reactor tank body; the three-phase separator comprises a shell defining a cavity, an overflow hole is formed in the side wall of the shell, a circulation channel communicated with the overflow hole is formed in the cavity, and the circulation channel is constructed to extend downwards from the position of the overflow hole; a flow guide device is arranged in a position, higher than the circulating channel, in the cavity; and fluid in the reactor tank body is configured to flow to the bottom of the flow guide device along the circulation channel through the overflow hole. According to the three-phase separator, the circulation channel and the flow guide device are arranged in the three-phase separator, the design of the three-phase separator is optimized, then separation of sludge in sewage and recovery of a catalyst are achieved, the effluent quality is improved, and the operation cost is reduced.

Description

Technical Field

[0001] The present disclosure relates to the field of sewage treatment devices, and particularly to an ozone catalytic reactor. Background Art

[0002] With the acceleration of the industrialization process, the discharge of industrial wastewater has been increasing continuously. It contains a large amount of refractory organic matter and high-concentration suspended solids, posing a serious threat to the environment. The ozone catalytic oxidation technology has received extensive attention due to its strong oxidation ability and high-efficiency treatment ability for refractory organic matter.

[0003] However, when the existing ozone catalytic oxidation reactors are used to treat wastewater containing high-concentration organic matter and suspended solids, they face the problems of large sludge production and catalyst loss. Since the wastewater contains a large amount of suspended solids and organic matter, these substances will be converted into sludge during the ozone catalytic reaction process. If they are not effectively separated and recovered, it will lead to excessive suspended solids content in the effluent. At the same time, the loss of the catalyst will also reduce the treatment efficiency and increase the operating cost. Summary of the Utility Model

[0004] The present disclosure provides an ozone catalytic reactor to solve the problems existing in the prior art.

[0005] According to a first aspect of the present disclosure, there is provided an ozone catalytic reactor, comprising:

[0006] A reactor tank body;

[0007] A water distribution system, which is configured to be located below the reactor tank body;

[0008] A fluidized bed system, which is configured to be located above the water distribution system in the reactor tank body;

[0009] A three-phase separator, which is configured to be located above the fluidized bed system in the reactor tank body; the three-phase separator includes a housing enclosing a chamber. An overflow hole is provided on the side wall of the housing, and a flow passage communicating with the overflow hole is provided in the chamber. The flow passage is configured to extend downward from the position of the overflow hole; a guiding device is provided at a position in the chamber above the outlet of the flow passage; the fluid in the reactor tank body is configured to flow along the flow passage through the overflow hole to the bottom of the guiding device.

[0010] In an embodiment of the present disclosure, a baffle is provided in the inner cavity of the housing, and the baffle and the inner wall of the housing enclose the flow passage; the guiding device is located on the side of the baffle away from the flow passage.

[0011] In one embodiment of the present disclosure, two baffles are provided, which are respectively located on both sides of the chamber. The baffles and the inner wall of the corresponding side of the housing enclose the flow passage respectively, and the overflow holes are respectively arranged at positions on the side wall of the housing corresponding to their respective flow passages; the guiding device is located at a position between the two flow passages.

[0012] In one embodiment of the present disclosure, the guiding device includes at least two guiding plates arranged in parallel, and the guiding plates are configured to be inclined and arranged in the chamber.

[0013] In one embodiment of the present disclosure, a water collecting tank is arranged at a position above the guiding device in the chamber, and a drainage pipe connected to the water collecting tank and extending outside the reactor tank.

[0014] In one embodiment of the present disclosure, at least two overflow ports are arranged on the side wall of the water collecting tank, and at least two of the overflow ports are configured to be arranged at intervals along the length direction of the water collecting tank.

[0015] In one embodiment of the present disclosure, the drainage pipe is communicated with the bottom end at the middle position of the water collecting tank, and both sides of the water collecting tank are configured to be gradually inclined upward from its middle position.

[0016] In one embodiment of the present disclosure, the bottom of the housing is configured to be in a funnel shape with gradually decreasing dimensions to form a precipitation area at the bottom of the chamber; the bottom end of the housing is configured to have an opening communicating with the inside of the reactor tank.

[0017] In one embodiment of the present disclosure, an airtight baffle is arranged at the bottom of the housing, and the airtight baffle is configured to extend obliquely downward from the position of the opening, and the positive projection of the opening in the height direction is located within the positive projection of the airtight baffle in the height direction.

[0018] In one embodiment of the present disclosure, two airtight baffles are provided, the tops of the airtight baffles are connected to the central position of the opening, and the two airtight baffles are configured to extend obliquely downward from the connection position to both sides of the opening respectively.

[0019] One beneficial effect of the present disclosure is that by providing a flow passage in the three-phase separator, the fluid containing sludge and catalyst can achieve reflux in the three-phase separator, which helps to separate the sludge and recover the catalyst in the fluid, improving the sewage treatment efficiency and the catalyst recycling rate. The fluid is configured to flow along the flow passage through the overflow hole to the bottom of the guiding device. Since the sludge and catalyst are effectively separated, the suspended solid content in the effluent is significantly reduced, improving the clarity and water quality of the effluent. In addition, due to the use of the novel three-phase separator, the risk of catalyst and sludge loss with the effluent is reduced, avoiding secondary pollution to the environment.

[0020] Other features and advantages of the present disclosure will become clear from the following detailed description of exemplary embodiments of the present disclosure with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the present disclosure and, together with the description, serve to explain the principles of the present disclosure.

[0022] Figure 1 is a schematic structural diagram of the ozone catalytic reactor of the present disclosure;

[0023] Figure 2 is a three-dimensional schematic diagram of the ozone catalytic reactor of the present disclosure;

[0024] Figure 3 is a front structural schematic diagram of the three-phase separator in the ozone catalytic reactor of the present disclosure;

[0025] Figure 4 is an internal structural schematic diagram of the three-phase separator in the ozone catalytic reactor of the present disclosure;

[0026] Figure 5 is a three-dimensional schematic diagram of the three-phase separator in the ozone catalytic reactor of the present disclosure;

[0027] Figure 6 is a sectional structural schematic diagram of the three-phase separator in the ozone catalytic reactor of the present disclosure;

[0028] Figure 7 is a top view structural schematic diagram of the three-phase separator in the ozone catalytic reactor of the present disclosure. Figures 1 to 7 The one-to-one correspondence between the names of the components and the reference numerals in is as follows:

[0029] 1. Reactor tank body; 11. Backwashing inlet; 12. Backwashing outlet; 13. First maintenance port; 14. Second maintenance port; 15. Ozone tail gas outlet pipeline; 2. Water distribution system; 21. Sewage inlet pipeline; 22. Ozone inlet pipeline; 23. Water distributor; 24. Aeration disk; 3. Fluidized bed system; 4. Three-phase separator; 401. Housing; 402. Chamber; 403. Overflow hole; 404. Flow-through channel; 405. Flow guiding device; 4051. Flow guiding plate; 406. Baffle; 407. Water collection tank; 4071. Overflow port; 408. Drainage pipeline; 409. Sedimentation area; 410. Gas seal baffle; 411. Opening. Detailed implementation manners

[0030] Various exemplary embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings. It should be noted that: Unless otherwise specifically stated, the relative arrangements of components and steps, numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present disclosure.

[0031] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way a limitation on the present disclosure, its application, or use.

[0032] Techniques, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be regarded as part of the specification.

[0033] It should be noted that: Similar reference numerals and letters denote similar items in the following drawings, and thus, once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0034] In this document, "upper", "lower", "front", "rear", "left", "right", etc. are only used to represent the relative positional relationships between relevant parts, rather than defining the absolute positions of these relevant parts.

[0035] In this document, "first", "second", etc. are only used for distinguishing from each other, rather than indicating importance, order, and the premise of mutual existence, etc.

[0036] In this document, "equal", "same", etc. are not strict mathematical and / or geometric limitations, and also include errors that can be understood by those skilled in the art and are allowed in manufacturing or using, etc.

[0037] The present disclosure provides an ozone catalytic reactor, comprising: a reactor tank body, a water distribution system, a fluidized bed system, and a three-phase separator. The water distribution system is configured to be located below the reactor tank body, the fluidized bed system is configured to be above the water distribution system within the reactor tank body, and the three-phase separator is configured to be above the fluidized bed system within the reactor tank body. Sewage and ozone flow upward through the water distribution system and undergo a catalytic oxidation reaction with a catalyst in the fluidized bed system to convert organic substances in the sewage into non-toxic small molecule substances, i.e., generating some sludge, and the sludge, catalyst, and water flow upward together into the three-phase separator.

[0038] In the prior art, when an ozone catalytic oxidation reactor treats wastewater containing high-concentration organic substances and solid suspended matters, it faces problems of large sludge production and catalyst loss. Since the wastewater contains a large amount of suspended solids and organic substances, these substances will be converted into sludge during the ozone catalytic reaction process. If not effectively separated and recovered, it will lead to an excessive SS content in the effluent. At the same time, the loss of the catalyst will also reduce the treatment efficiency and increase the operating cost. In addition, the treatment and disposal of sludge are also a difficult problem, requiring additional equipment and treatment processes, which not only increase the treatment cost but may also cause secondary pollution to the environment.

[0039] The three-phase separator of the present disclosure includes a housing enclosing a chamber. An overflow hole is provided on the side wall of the housing, and a flow channel communicating with the overflow hole is provided in the chamber. The flow channel is configured to extend downward from the position of the overflow hole; a guiding device is provided in the chamber at a position higher than the flow channel; the fluid in the reactor tank body is configured to flow along the flow channel through the overflow hole to the bottom of the guiding device. The fluid entering the three-phase separator realizes reflux within the three-phase separator along the flow channel, enabling the sludge and catalyst to be enriched at the three-phase separator, and the water flows out through the guiding device, thereby separating and recovering the sludge and catalyst in the three-phase separator, which helps to improve the sewage treatment efficiency and the catalyst recycling utilization rate. Since the sludge and catalyst are effectively separated, the content of suspended solids in the effluent is significantly reduced, improving the clarity and water quality of the effluent. In addition, due to the use of the new three-phase separator, the risk of catalyst and sludge being lost with the effluent is reduced, avoiding secondary pollution to the environment.

[0040] The following describes the specific embodiments of the present disclosure with reference to the accompanying drawings.

[0041] In one embodiment of the present disclosure, in combination with Figure 1 , a kind of ozone catalytic reactor is provided, comprising: a reactor tank body 1, a water distribution system 2, a fluidized bed system 3, and a three-phase separator 4. The water distribution system 2 is configured to be located below the reactor tank body 1, the fluidized bed system 3 is configured to be above the water distribution system 2 within the reactor tank body 1, and the three-phase separator 4 is configured to be above the fluidized bed system 3 within the reactor tank body 1.

[0042] In one embodiment of the present disclosure, the water distribution system 2 is arranged at the bottom position inside the reactor tank 1. Ozone is input into the fluid in the reactor tank 1 through the water distribution system 2 it includes, so that the fluid surges upward under the action of ozone. Then, the sewage and ozone enter the fluidized bed system 3 and catalytic oxidation reaction occurs together with the catalyst in the fluidized bed system 3, converting the suspended solids and organic matters in the sewage into non-toxic small molecule substances, that is, generating part of the sludge. And the mixed fluid such as sludge, catalyst and water surges upward in the reactor tank 1 and flows into the three-phase separator 4, so that the sludge and catalyst in the fluid can be separated.

[0043] In one embodiment of the present disclosure, in combination with Figure 1 , the water distribution system 2 includes a sewage inlet pipeline 21 and an ozone inlet pipeline 22. The sewage inlet pipeline 21 and the ozone inlet pipeline 22 are configured to extend radially along the reactor tank 1, and the sewage inlet pipeline 21 is arranged above the ozone inlet pipeline 22; a water distributor 23 and a plurality of ozone aeration discs 24 are arranged below the water distribution system 2. The ozone aeration discs 24 are arranged at the bottom of the reactor tank 1. The water distributor 23 is configured above the ozone aeration discs 24, and the water distributor 23 is fixedly connected to the sewage inlet pipeline 21; the plurality of ozone aeration discs 24 are configured to be arranged at intervals in a circular area at the bottom of the reactor tank 1. The ozone aeration discs 24 are configured to be disc-shaped, and the ozone aeration discs 24 are connected to the ozone inlet pipeline 22; an ozone tail gas outlet pipeline 15 is arranged at the top of the reactor tank 1, and the ozone tail gas outlet pipeline 15 is connected to an ozone destructor in the prior art.

[0044] When this embodiment is in use, ozone enters the reactor tank 1 from the ozone inlet pipeline 22 and is aerated through the aeration discs 24; sewage enters the reactor tank 1 from the sewage inlet pipeline 21 and flows upward through the water distributor 23. Ozone suspends the catalyst and is fully mixed with the sewage in the fluidized bed system 3. After the sewage undergoes the catalytic reaction, the suspended solids and organic matters in the sewage are converted into non-toxic small molecule substances. The sludge, catalyst and water flow into the three-phase separator 4, and the separation of the sludge, catalyst and water is realized in the three-phase separator 4; the tail gas after the reaction, containing unreacted ozone completely, enters the top area of the reactor tank 1 from the side of the three-phase separator 4 and enters the ozone destructor through the ozone tail gas outlet pipeline 15 at the top for treatment to ensure the safety of the discharged gas.

[0045] In one embodiment of the present disclosure, in combination with Figure 3 and Figure 5, the three-phase separator 4 includes a housing 401 that encloses a chamber 402. An overflow hole 403 is provided on the side wall of the housing 401. The overflow hole 403 is configured as an area above the side wall of the housing 401. The overflow hole 403 penetrates the side wall of the housing 401, thereby connecting the reactor tank 1 with the chamber 402, so that the fluid in the reactor tank 1 can enter the chamber 402 through the overflow hole 403. A flow passage 404 communicating with the overflow hole 403 is provided in the chamber 402. The flow passage 404 is configured to extend downward from the position of the overflow hole 403; a guiding device 405 is provided in the chamber 402 at a position higher than the outlet of the flow passage 404; the fluid in the reactor tank 1 is configured to flow along the flow passage 404 to the bottom of the guiding device 405 through the overflow hole 403. The size and shape of the three-phase separator of the present disclosure can be replaced with the size and shape well-known to those skilled in the art, and the present disclosure does not limit this.

[0046] When in use in this embodiment, the fluid containing sludge and catalyst surges upward in the tank after leaving the fluidized bed system 3. The fluid containing sludge and catalyst enters the chamber 402 through the overflow hole 403 above the side wall of the three-phase separator 4 and flows downward along the flow passage 404 to the three-phase separator 4. After leaving the outlet of the flow passage 404, it enters the bottom of the guiding device 405 and flows. When the fluid flows upward, the sludge and catalyst in the fluid are blocked by the guiding device 405, and the sludge and catalyst precipitate downward under the action of their own gravity. In addition, due to the action of the water distributor and the aeration disk, the flow rate of the fluid in the reactor tank 1 is relatively fast. Therefore, the fluid such as sludge and catalyst has a tendency to flow upward. Although the sludge and catalyst have a certain mass, they cannot overcome the upward flow in the reactor tank 1. Therefore, the sedimentation effect in the reactor tank 1 is poor. When the fluid such as sludge and catalyst enters the three-phase separator 4, since the housing 401 of the three-phase separator 4 encloses a chamber 402 in the reactor tank 1, the flow rate of the fluid in the chamber 402 is less than the flow rate of the fluid in the reactor tank 1. At this time, the sludge and catalyst will precipitate downward due to their own weight in the chamber 402, thereby realizing the phase separation of the fluid.

[0047] Different from the upward flow of the fluid in the reactor tank 1, the fluid flows downward along the flow passage 404 in the three-phase separator 4, realizing the reflux of the fluid in the three-phase separator 4, which helps to separate and recover the sludge and catalyst in the fluid, and further realizes the separation of sludge in sewage and the recovery of catalyst, which helps to improve the effluent quality and reduce the operation cost. Through the optimized design of the three-phase separator, the present disclosure can improve the sewage treatment efficiency and the catalyst recycling rate. In addition, the separation of sludge and catalyst avoids the direct outflow of sludge and catalyst with water from the outlet, reducing the risk of secondary pollution.

[0048] In one embodiment of the present disclosure, in combination with Figure 3 and Figure 7 , a baffle 406 is provided in the inner cavity of the housing 401. The baffle 406 and the inner wall of the housing 401 enclose a flow passage 404, and the flow guiding device 405 is located on the side of the baffle 406 away from the flow passage 404.

[0049] The chamber 402 of the present disclosure may be, for example, a rectangle with a certain length and width, or may be circular, triangular or other shapes. The baffle 406 is provided at a position adjacent to the side wall of the housing 401, and divides the chamber 402 of the housing 401 into a flow passage 404 and an area for arranging the flow guiding device 405. That is, one side of the baffle 406 and the side wall of the housing 401 enclose the flow passage 404, and the other side of the baffle 406 participates in enclosing the area for arranging the flow guiding device 405. When the fluid flows out from the bottom opening of the flow passage 404, it enters the area for arranging the flow guiding device 405. During the upward flow process, the three-phase separation is achieved under the action of the flow guiding device 405.

[0050] In one embodiment of the present disclosure, two baffles 406 may be provided, which are respectively located on opposite sides of the chamber 402, that is, the baffle 406 and the inner wall of the housing 401 on the corresponding side enclose the flow passage 404 respectively; the overflow holes 403 are respectively provided at positions on the side wall of the housing 401 corresponding to their respective flow passages 404; the flow guiding device 405 is located at a position between the two flow passages 404.

[0051] When this embodiment is in use, the fluid containing sludge and catalyst enters the flow passage 404 from the overflow holes 403 on both sides of the housing 401. Since the baffles 406 are provided on both sides of the inner cavity of the housing 401, the fluid containing sludge and catalyst cannot directly flow into the flow guiding device 405. In addition, the flow guiding device 405 is located on the side of the baffle 406 away from the flow passage 404, that is, the flow guiding device 405 is located at a position between the two flow passages 404. The fluid can only enter the lower part inside the three-phase separator 4 through the flow passages 404 on both sides first, and then flow upward into the flow guiding device 405. Through the setting of the flow passage 404, the fluid velocity is slowed down, which helps to better separate the sludge and catalyst in the fluid, and helps to improve the clarity of the effluent and the water quality.

[0052] In one embodiment of the present disclosure, in combination with Figure 3 and Figure 4, the flow guiding device 405 includes at least two flow guiding plates 4051 arranged in parallel, and the flow guiding plates 4051 are configured to be inclined and arranged in the chamber 402. In a specific embodiment of the present disclosure, the plurality of flow guiding plates 4051 are configured to be flat and arranged along the length direction of the flow guiding device 405. The inclined flow guiding plates 4051 enable the fluid to flow upward under the guiding action of the flow guiding plates 4051. At the same time, the inclined flow guiding plates 4051 can block sludge and catalysts, further slowing down the flow rate of the fluid, so that the sludge and catalysts can precipitate downward under the action of their own gravity to achieve separation.

[0053] In an embodiment of the present disclosure, in combination with Figure 4 and Figure 6 , a water collecting tank 407 is provided at an upper position of the flow guiding device 405 in the chamber 402, and a drainage pipe 408 connected to the water collecting tank 407 and extending outside the reactor tank body 1. In a specific embodiment of the present disclosure, the water collecting tank 407 provided above the flow guiding device 405 can enrich the treated clear water above the flow guiding device 405. And because the water collecting tank 407 is connected to the drainage pipe 408 extending outside the reactor tank body 1, the clear water flowing into the water collecting tank 407 can be discharged and collected to realize the recovery of the clear water.

[0054] In an embodiment of the present disclosure, in combination with Figure 3 and Figure 4 , at least two overflow ports 4071 are provided on the side wall of the water collecting tank 407, and the at least two overflow ports 4071 are configured to be arranged at intervals along the length direction of the water collecting tank 407. In a specific embodiment of the present disclosure, the overflow ports 4071 provided on the side wall of the water collecting tank 407 can enable the clear water in the flow guiding device 405 to flow into the water collecting tank 407 through the overflow ports 4071 to play a circulation role, and the plurality of overflow ports 4071 are arranged at intervals along the length direction of the water collecting tank 407, which can improve the efficiency of the clear water flowing into the water collecting tank 407.

[0055] In an embodiment of the present disclosure, in combination with Figure 3 and Figure 4, the drainage pipe 408 communicates with the bottom end of the middle position of the water collecting tank 407, and both sides of the water collecting tank 407 are configured to gradually slope upward from its middle position. The water collecting tank 407 of the present disclosure can be, for example, fan-shaped, or U-shaped, V-shaped or other shapes. In a specific embodiment of the present disclosure, since the water collecting tank 407 has a shape with higher sides and lower middle, it is convenient for the clear water on both sides above the diversion device 405 to flow into the water collecting tank 407, and the bottom end of the middle position of the water collecting tank 407 communicates with the drainage pipe 408, which can make the clear water at the middle bottom of the water collecting tank 407 flow out for recovery, helping to improve the drainage efficiency of the clear water at the water collecting tank 407. This process ensures the quality of the effluent, and since the sludge and the catalyst are effectively separated, the suspended solid content in the effluent is significantly reduced, improving the clarity and quality of the effluent. In addition, the arc-shaped structure of the water collecting tank 407 has high stiffness, small deformation and good stability.

[0056] In an embodiment of the present disclosure, in combination with Figure 4 and Figure 5 , the bottom of the housing 401 is configured to be in a funnel shape with gradually decreasing dimensions to form a sedimentation area 409 at the bottom of the chamber 402; the bottom end of the housing 401 is configured to have an opening 411 communicating with the inside of the reactor tank body 1. The shape and structure of the baffle can be replaced with well-known shape and structure in the art, and the present disclosure does not limit this comparison.

[0057] When this embodiment is in use, the fluid containing sludge and catalyst enters the flow channel 404 from the overflow hole 403, and the fluid first flows downward along the flow channel 404 to the sedimentation area 409. Since the bottom of the housing 401 is in a funnel shape with gradually decreasing dimensions, that is, the cross-sectional area of the sedimentation area 409 gradually increases from bottom to top, and since the flow rate of the chamber 402 is basically constant, while the cross-sectional area of the sedimentation area 409 gradually increases from bottom to top, the flow velocity of the fluid in the sedimentation area 409 gradually slows down from bottom to top, which helps to separate the sludge and the catalyst in the sedimentation area 409. Because the sedimentation area 409 is in a funnel shape with gradually decreasing dimensions, the sludge and the catalyst will settle into the sedimentation area 409 due to their density being greater than that of water. In addition, the baffle 4051 has a certain inclination angle to further block the sludge and the catalyst that have not settled completely, so that the sludge and the catalyst that have not settled completely stay on the baffle 4051 and slowly settle downward. The present disclosure improves the sedimentation efficiency, enabling the catalyst and the sludge to be quickly separated, thereby reducing the suspended solid concentration of the fluid, improving the overall efficiency of sewage treatment and the clarity of the effluent, reducing the risk of the catalyst and the sludge being lost with the effluent, and avoiding secondary pollution to the environment.

[0058] In addition, since the density of the catalyst is greater than that of the sewage, the separated catalyst in the three-phase separator 4 will settle into the precipitation zone 409. Due to the funnel-shaped structure of the precipitation zone 409 with a gradually decreasing size, the catalyst is collected at the precipitation zone 409 and refluxed to the reaction zone through the opening 411 to re-participate in the ozonation-catalytic oxidation of organic matter and solid suspended matter in the sewage. The catalyst can be effectively recovered and refluxed to the fluidized bed area, realizing the recycling of the catalyst, reducing the loss of the catalyst, and lowering the operating cost.

[0059] In a specific embodiment of the present disclosure, the fluid flows upward in the reactor tank 1, and the flow process is relatively complex. During the upward surging of the fluid, part of the fluid containing the catalyst and sludge flows into the interior of the three-phase separator 4 from the bottom opening 411 of the three-phase separator 4. However, due to the inclined baffle plate 4051 in the flow guiding device 405 and the funnel-shaped precipitation zone 409, the sludge and catalyst in the fluid flowing into the three-phase separator 4 from the opening 411 are separated and recovered at the bottom of the three-phase separator 4. The specific separation process of the sludge and the catalyst is as described above and will not be elaborated here.

[0060] In an embodiment of the present disclosure, in combination with Figure 4 and Figure 5 , an airtight baffle 410 is provided at the bottom of the housing 401. The airtight baffle 410 is configured to extend obliquely downward from the position of the opening 411, and the positive projection of the opening 411 in the height direction is located within the positive projection of the airtight baffle 410 in the height direction.

[0061] In a specific embodiment of the present disclosure, since the airtight baffle 410 extends obliquely downward from the position of the opening 411, the fluid below the three-phase separator 4 is blocked by the airtight baffle 410, slowing down the fluid flow rate at the airtight baffle 410. In addition, since the positive projection of the opening 411 in the height direction is located within the positive projection of the airtight baffle 410 in the height direction, most of the fluid cannot flow into the three-phase separator 4 through the opening 411, ensuring the stable flow of the fluid in the three-phase separator 4 and contributing to the separation and recovery of the sludge and the catalyst in the three-phase separator 4.

[0062] In addition, since ozone usually flows upward in the vertical direction, making the positive projection of the opening 411 in the height direction located within the positive projection of the airtight baffle 410 in the height direction can minimize the inflow of ozone into the three-phase separator 4 through the opening 411.

[0063] In an embodiment of the present disclosure, in combination with Figure 5 and Figure 6, there are two air seal baffles 410. The center position of the connection opening 411 is connected to the top of the air seal baffle 410. The two air seal baffles 410 are configured to extend obliquely downward from the connection position to both sides of the opening 411.

[0064] In a specific embodiment of the present disclosure, the length of the air seal baffle 410 is configured to be equal to the bottom length of the sedimentation zone 409. Since there are two downward-extending air seal baffles 410 at the opening 411, the unreacted tail gas and / or ozone flowing upward in the fluidized bed system 3 are blocked at the air seal baffle 410. The length of the air seal baffle 410 is configured to be equal to the bottom length of the sedimentation zone 409 and extend downward, which avoids a large amount of upward gas from entering the three-phase separator 4, thereby preventing the flow rate in the three-phase separator 4 from being too fast, improving the gas blocking effect, and helping the unreacted tail gas and / or ozone to be discharged through the ozone tail gas outlet pipeline 15.

[0065] In an embodiment of the present disclosure, in combination with Figure 2 , a backwashing inlet 11 and a backwashing outlet 12 are provided on the side wall of the reactor tank body 1. The backwashing inlet 11 is configured to be located on opposite sides of the reactor tank body 1, and the backwashing inlet 11 is provided in the upper region of the side wall of the reactor tank body 1, and the backwashing outlet 12 is provided in the lower region of the side wall of the reactor tank body 1. After the reactor of the present disclosure has been operating for a period of time, it can be shut down for maintenance, and the sludge deposited in the fluidized bed system 3 can be flushed through the backwashing inlet 11 and the backwashing outlet 12.

[0066] When this embodiment is in use, since sludge is generated after ozone and its derivatives react with sewage, part of the sludge enters the interior through the overflow hole 403 on the side of the three-phase separator 4 in the upper part of the reactor tank body 1, and the sludge precipitates and flows back to the fluidized bed area through the diversion device 405 and the sedimentation zone 409 in the three-phase separator 4. By spraying water through the backwashing inlet 11 above the side wall of the reactor tank body 1 to flush the sludge to the opposite-side lower backwashing outlet 12, the sludge can be cleaned, which helps to improve the water quality and reduce the suspended solid content in the water body, and the sludge can be discharged regularly through backwashing to ensure that the sludge is effectively treated.

[0067] In an embodiment of the present disclosure, in combination with Figure 2 , a first maintenance opening 13 and a second maintenance opening 14 are respectively provided at the top and side wall of the reactor tank body 1. The first maintenance opening 13 is provided near the ozone tail gas outlet pipeline 15, and the second maintenance opening 14 is provided above the sewage inlet pipeline 21, and the reactor can be maintained and repaired regularly through the first maintenance opening 13 and the second maintenance opening 14.

[0068] The embodiments of the present disclosure have been described above. The above description is exemplary and not exhaustive, and is also not limited to the disclosed embodiments. Many modifications and variations are obvious to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The choice of terms used herein is intended to best explain the principles of the embodiments, the practical application, or the improvement of the technology in the market, or to enable other ordinary skill in the art to understand the embodiments disclosed herein. The scope of the present disclosure is defined by the appended claims.

Claims

1. An ozone catalytic reactor, characterized in that: include: Reactor tank (1); A water distribution system (2), wherein the water distribution system (2) is configured to be located below the reactor tank (1); A fluidized bed system (3), wherein the fluidized bed system (3) is configured to be located above the water distribution system (2) in the reactor tank (1); A three-phase separator (4), wherein the three-phase separator (4) is configured to be located above the fluidized bed system (3) in the reactor tank (1); the three-phase separator (4) comprises a shell (401) enclosing a chamber (402), an overflow hole (403) is provided on the side wall of the shell (401), a flow channel (404) connected to the overflow hole (403) is provided in the chamber (402), and the flow channel (404) is configured to extend downward from the overflow hole (403); a flow guide device (405) is provided in the chamber (402) at a position higher than the outlet of the flow channel (404); the fluid in the reactor tank (1) is configured to flow through the overflow hole (403) along the flow channel (404) to the bottom of the flow guide device (405).

2. The ozone catalytic reactor according to claim 1, characterized in that: A baffle (406) is arranged in the inner cavity of the shell (401), and the baffle (406) and the inner wall of the shell (401) form the circulation channel (404); the flow guide device (405) is located on a side of the baffle (406) away from the circulation channel (404).

3. The ozone catalytic reactor according to claim 2, characterized in that: Two baffles (406) are provided, and are respectively located on both sides of the chamber (402); the baffles (406) and the inner walls of the shell (401) on the corresponding sides respectively form the circulation channel (404); the overflow holes (403) are respectively provided on the side walls of the shell (401) at positions corresponding to the respective circulation channels (404); and the flow guide device (405) is located between the two circulation channels (404).

4. The ozone catalytic reactor according to claim 1, characterized in that: The flow guide device (405) comprises at least two flow guide plates (4051) arranged in parallel, and the flow guide plates (4051) are configured to be arranged obliquely in the chamber (402).

5. The ozone catalytic reactor according to claim 1, characterized in that: A water collecting trough (407) is provided above the flow guiding device (405) in the chamber (402), and a drainage pipe (408) is connected to the water collecting trough (407) and extends to the outside of the reactor tank (1).

6. The ozone catalytic reactor according to claim 5, characterized in that: The side wall of the water collecting trough (407) is provided with at least two overflow ports (4071), and the at least two overflow ports (4071) are configured to be arranged at intervals along the length direction of the water collecting trough (407).

7. The ozone catalytic reactor according to claim 6, characterized in that: The drainage pipe (408) is connected to the bottom end of the middle position of the water collecting trough (407), and the two sides of the water collecting trough (407) are constructed to gradually slope upward from the middle position.

8. The ozone catalytic reactor according to claim 1, characterized in that: The bottom of the shell (401) is constructed to be in the shape of a funnel with gradually decreasing size so as to form a sedimentation area (409) at the bottom of the chamber (402); the bottom end of the shell (401) is constructed to have an opening (411) connected to the reactor tank (1).

9. The ozone catalytic reactor according to claim 8, characterized in that: An air-sealing baffle (410) is provided at the bottom of the shell (401), and the air-sealing baffle (410) is constructed to extend obliquely downward from the position of the opening (411), and the orthographic projection of the opening (411) in the height direction is located within the orthographic projection range of the air-sealing baffle (410) in the height direction.

10. The ozone catalytic reactor according to claim 9, characterized in that: Two air-sealing baffles (410) are provided, the top of each of the air-sealing baffles (410) is connected to the center of the opening (411), and the two air-sealing baffles (410) are constructed to extend downwardly and obliquely from the connection position to both sides of the opening (411).

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