Ozone reactor wastewater treatment device

Abstract

The utility model discloses an ozone reactor wastewater treatment device, which belongs to the technical field of wastewater treatment and comprises a reaction column, a partition plate is arranged in the reaction column, the bottom of the partition plate is in contact with the bottom of the reaction column, and the top of the partition plate extends to a water outlet in the side surface of the top of the reaction column. An aeration disc and a water circulation device are further arranged at the bottom of the reaction column, and a catalyst filler is arranged in the middle of the reaction column. The partition plate is arranged in the reaction column to divide the interior of the reaction column into two areas, so that the flowing path of wastewater is increased, the aeration disc at the bottom of the reaction column can uniformly introduce ozone into the reaction column to be fully mixed with the wastewater, the reaction efficiency of the ozone and the wastewater is promoted through the catalyst filler, the wastewater is deeply treated, and the wastewater treatment efficiency is improved. According to the scheme, the structural design is simple and reasonable, and the reaction effect of ozone and wastewater is improved from the aspects of increasing the flow path, promoting the reaction rate, increasing the cycle index and the like.

Description

Technical Field

[0001] This utility model relates to a wastewater treatment device, and more specifically, to an ozone reactor wastewater treatment device. Background Technology

[0002] Traditional ozone reactors typically employ aeration discs. These discs are evenly distributed at the bottom of the reactor, allowing ozone to enter the water through them. The bubbles rise from the bottom and exit from the top. To improve ozone reaction efficiency, this type of reactor requires ozone catalyst packing in the middle. This packing is primarily composed of metal oxides supported on a carrier and is granular. Smaller particles are placed at the top, and larger particles at the bottom, to reduce clogging. Since packing height is directly proportional to ozone reaction efficiency, one or more sections of packing are typically used in the design to ensure optimal reaction efficiency. However, due to the characteristics of solid packing, air resistance can easily form within the reactor after packing, creating air gaps between the upper and lower water layers and affecting the system's normal operation. Furthermore, the aeration discs, located at the bottom of the reactor, can lead to uneven water and air distribution at higher reactor heights, resulting in higher ozone concentrations at the bottom and lower concentrations at the top, thus impacting treatment effectiveness.

[0003] For example, Chinese Patent Publication No. CN110002576B, published on November 14, 2023, entitled "An Ozone Catalytic Oxidation Reactor and its Wastewater Treatment Method," discloses a wastewater treatment device comprising, from top to bottom, an ultraviolet lamp, an aeration disc, a catalyst layer, and a water distribution device arranged in sequence within the reactor body. An ozone generator is connected to the aeration disc and a microbubble generator via a second ozone exhaust pipe and a first ozone exhaust pipe, respectively. The microbubble generator is connected to the water distribution device via an inlet pipe, and a backwash inlet pipe is also connected to the water distribution device. A drain pipe with a drain valve and a backwash drain valve are connected to the upper part of the reactor body, and a tail gas emission pipe with a tail gas destroyer is connected to the top of the reactor body. This ozone catalytic oxidation reactor, through its reasonable structural layout, allows ozone to be released as microbubbles, fully contacting the wastewater, and is added at multiple points. Under the catalytic effect of the catalyst and the synergistic effect of ultraviolet light, the ozone utilization rate and reaction efficiency are improved. However, this solution requires ozone to be added at multiple points, the ozone addition method is complicated, the overall structure is more complicated, and the mixing time between ozone and sewage is short, making it difficult to achieve good treatment results. Utility Model Content

[0004] This invention overcomes the problems of poor ozone treatment effect and complex structure in wastewater treatment, and provides an ozone reactor wastewater treatment device. This solution has a simple structure and can effectively improve the reaction time between ozone and wastewater, thereby improving the wastewater purification effect.

[0005] To solve the above-mentioned technical problems, this utility model adopts the following technical solution: an ozone reactor wastewater treatment device, including a reaction column, a baffle plate is arranged inside the reaction column, the bottom of the baffle plate is in contact with the bottom of the reaction column, the top of the baffle plate extends to the outlet on the side of the top of the reaction column, an aeration disc and a water circulation device are also arranged at the bottom of the reaction column, and catalyst packing is arranged in the middle of the reaction column. The baffle plate inside the reaction column divides the interior into two areas, thereby increasing the flow path of the wastewater. The aeration disc at the bottom of the reaction column can evenly introduce ozone into the interior of the reaction column and fully mix it with the wastewater. Furthermore, the catalyst packing promotes the reaction efficiency of ozone and wastewater, achieving deep treatment of the wastewater. The water circulation device can also circulate the mixed ozone and wastewater inside the reaction column, returning it to the inlet position, improving the reaction effect of ozone and wastewater. This solution has a simple and reasonable structural design, greatly improving the reaction effect of ozone and wastewater from multiple aspects such as increasing the flow path, promoting the reaction rate, and increasing the number of circulations, thus achieving deep treatment of wastewater.

[0006] Preferably, the water circulation device includes a pump body, and a first inlet and a first outlet are provided at the bottom of the reaction column. The first inlet and the first outlet are located on both sides of the partition, and the pump body is connected to the first inlet and the first outlet respectively through water pipes. The partition divides the interior of the reaction column into a reaction zone and an overflow zone, and the pump body can pump water from the overflow zone back into the reaction zone for circulation.

[0007] Preferably, the bottom of the reaction column is also provided with a water inlet, which is located on the same side of the partition as the first water inlet and above the first water inlet. The water inlet allows wastewater to be introduced into the reaction column. The first water inlet is the inlet for circulating water. The wastewater circulating in the reaction column flows back to the bottom of the reaction column and mixes with the wastewater at the water inlet. The circulating water inlet is located below the wastewater inlet, which can improve the mixing effect of wastewater and circulating water and reduce the color of wastewater.

[0008] Preferably, a first observation mirror is provided above the inlet and below the catalyst packing, and a second observation mirror is provided below the outlet. The first observation mirror can observe the wastewater condition near the wastewater inlet, and the second observation mirror can observe the wastewater condition near the outlet.

[0009] Preferably, the aeration disc includes an aeration disc base and an aeration disc cover, with the cover positioned above the base. A membrane is disposed between the cover and the base, and the membrane has uniformly distributed aeration micropores. Ozone can be introduced into the bottom of the reaction column through the membrane, and the uniform distribution of the micropores on the membrane ensures even ozone emission, improving the reaction efficiency between wastewater and ozone.

[0010] Preferably, the aeration disc base is provided with an air inlet at the bottom, and the air inlet is equipped with a distribution plate and a check valve. The air inlet on the aeration disc base can introduce gas into the aeration disc, the distribution plate can distribute the introduced gas to various positions on the membrane, avoid the gas concentration, and improve the uniform distribution of gas; the check valve can prevent gas backflow.

[0011] Preferably, the bottom of the reaction column is also provided with drain pipes located on both sides of the partition. The drain pipes at the bottom of the reaction column can drain the water inside the reaction column, allowing for drainage operations when cleaning or maintenance is required.

[0012] Preferably, the catalyst packing is granular, with the particle size of the catalyst packing at the bottom being larger than that at the top. This difference in particle size, with the bottom packing having a larger particle size than the top packing, effectively prevents clogging.

[0013] Preferably, an exhaust pipe is also provided at the top of the reaction column, and a tail gas destroyer is also provided at the exhaust pipe. The exhaust pipe can discharge excess gas in the reaction column, and the tail gas destroyer can completely react the gas, preventing it from being released into the air and causing environmental pollution.

[0014] Compared with the prior art, the beneficial effects of this utility model are: (1) The structure design is simple and reasonable, and the reaction effect of ozone and wastewater is greatly improved from multiple aspects such as increasing the flow path, promoting the reaction rate and increasing the number of cycles, so as to achieve the deep treatment of wastewater; (2) A water circulation device and an aeration plate are set up to ensure uniform water and air distribution; (3) The wastewater condition in the reaction column can be observed in real time. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model.

[0016] Figure 2 This is a schematic diagram of the bottom structure of the reaction column of this utility model.

[0017] Figure 3 This is a schematic diagram of the aeration disc structure of this utility model.

[0018] In the diagram: 1. Reaction column, 2. Baffle plate, 3. Outlet, 4. Inlet, 5. Aeration disc, 6. Catalyst packing, 7. Pump body, 8. First outlet, 9. First inlet, 10. First observation mirror, 11. Second observation mirror, 12. Aeration disc base, 13. Aeration disc cover, 14. Diaphragm, 15. Aeration micropores, 16. Air inlet, 17. Diverter plate, 18. Check valve, 19. Drain pipe, 20. Exhaust pipe, 21. Rubber gasket, 22. Connecting flange. Detailed Implementation

[0019] The technical solution of this utility model will be further described in detail below through specific embodiments and in conjunction with the accompanying drawings.

[0020] Example 1: As Figures 1 to 2 The ozone reactor wastewater treatment device shown includes a reaction column 1. A water circulation device, an aeration disc 5, and an inlet 4 are located at the bottom of the reaction column 1, while an outlet 3 and an exhaust pipe 20 are located at the top. A baffle 2 is arranged in the middle of the reaction column 1, dividing the interior of the reaction column 1 into a reaction zone and an overflow zone. The inlet 4 allows wastewater to flow into the reaction column 1. The aeration disc 5, located directly below the reaction column 1, provides ozone to the interior of the reaction column 1. Ozone forms bubbles within the reaction column 1, mixes with the wastewater, and reacts, thereby removing COD and TOC from the wastewater, reducing its color, and achieving advanced wastewater treatment. The water circulation device can pump water from the overflow zone of the reaction column 1 back to the reaction zone for a second reaction. The design of the baffle 2 extends the residence time of the wastewater within the reaction column 1, improving the reaction efficiency between the wastewater and ozone.

[0021] Specifically, baffle 2 is vertically arranged inside the reaction column 1. The bottom of baffle 2 is connected to the bottom of the reaction column 1, and the top of baffle 2 extends to the outlet 3 at the top of the reaction column 1. The outlet 3 is located on the side wall at the top of the reaction column 1, and the top of baffle 2 and the outlet 3 are flush. Inlet 4 is located on the right side (shown in the diagram) of the reaction zone at the bottom of the reaction column 1, and inlet 4 is connected to a wastewater supply device (not shown in the diagram). Initially, when wastewater is supplied into the reaction column 1, the wastewater enters through inlet 4, and then the water level in the reaction zone gradually rises until it surpasses baffle 2 and enters the overflow zone on the other side of the reaction column 1; then the water level in the overflow zone also gradually rises until it surpasses baffle 2, at which point the wastewater height reaches the height of outlet 3 and can be drained. When the water level in the reaction column 1 reaches the outlet 3, the water circulation device is also started simultaneously, pumping the wastewater in the overflow zone back into the reaction zone for recirculation.

[0022] Furthermore, a first inlet 9 and a first outlet 8 are provided at the bottom of the reaction column 1. The first inlet 9 and the first outlet 4 are located on the same side of the baffle 2, that is, on the reaction zone side of the reaction column 1; the first outlet 8 and the first outlet 3 are also located on the same side of the baffle 2, that is, on the overflow zone side of the reaction column 1. The water circulation device includes a pump body 7 and a water pipe. The input end of the pump body 7 is connected to the first outlet 8 of the overflow zone through the water pipe, and the output end of the pump body 7 is connected to the first inlet 9 of the reaction zone through the water pipe. After the pump body 7 is started, it draws the wastewater in the overflow zone of the reaction column 1 back to the reaction zone of the reaction column 1, and mixes it with the wastewater supplied at the inlet 4.

[0023] The inlet 4 is located above the first inlet 9 and is flush with the first outlet 8. When the wastewater enters through the inlet 4, it can mix with the circulating water flowing upward from the bottom, improving the mixing effect of the wastewater and the circulating water. In addition, the circulating water also contains ozone, which can increase the ozone content in the reaction zone of the reaction column 1 and improve the reaction effect of wastewater and ozone in the reaction zone.

[0024] Catalyst packing 6 is installed in the middle of the reaction column 1. Specifically, the radial dimension of the reaction column 1 section with catalyst packing 6 is larger than the radial dimension of the main body of the reaction column 1. This allows for a larger placement of catalyst packing 6, improving the catalytic effect, and also allows for the placement of filters and support frames (not shown in the figure) on this section, which can then be used to fill the catalyst packing 6. It should be noted that the particle size of the catalyst packing 6 is not uniform; the bottom catalyst packing 6 has a larger particle size, while the top catalyst packing 6 has a smaller particle size. This effectively prevents clogging within the reaction column 1. The larger particle size of the bottom catalyst packing 6 and the larger gaps between the catalyst packing 6 allow for easier passage of gas and wastewater. The smaller particle size of the top catalyst packing 6 and the smaller gaps between the catalyst packing 6 allow gas and wastewater to pass through the catalyst packing 6 under gas and water pressure, thus improving the catalytic effect of the catalyst packing 6.

[0025] A first observation mirror 10 is installed above the inlet 4 and below the catalyst packing 6. The first observation mirror 10 allows operators to observe the wastewater at the inlet 4, mainly focusing on the color of the wastewater; and at this location, the wastewater has a relatively high color. A second observation mirror 11 is arranged below and near the outlet 3. The second observation mirror 11 allows operators to observe the wastewater at the outlet 3, where the wastewater has a low color or is nearly colorless; through the observation of the second observation mirror 11, operators can adjust the wastewater flow rate, ozone supply rate, etc., according to the wastewater color to achieve appropriate wastewater discharge standards.

[0026] Two vent pipes 19 are installed directly below the reaction column 1, one at the bottom of the reaction zone and the other at the bottom of the overflow zone. These vent pipes are designed to drain wastewater from both zones of the reaction column 1. Drainage is only required when cleaning or maintenance is needed. An exhaust pipe 20 is located directly above the reaction column 1. An exhaust gas breaker (not shown in the figure) is installed on the exhaust pipe 20. The exhaust pipe 20 discharges excess gas from the reaction column 1, and the exhaust gas breaker ensures that the gas is completely reacted, preventing it from being released into the air and causing environmental pollution.

[0027] Example 2: As Figures 1 to 3The ozone reactor wastewater treatment device shown includes a reaction column 1. A water circulation device, an aeration disc 5, and an inlet 4 are located at the bottom of the reaction column 1, while an outlet 3 and an exhaust pipe 20 are located at the top. A baffle 2 is arranged in the middle of the reaction column 1, dividing the interior of the reaction column 1 into a reaction zone and an overflow zone. The inlet 4 allows wastewater to flow into the reaction column 1. The aeration disc 5, located directly below the reaction column 1, provides ozone to the interior of the reaction column 1. Ozone forms bubbles within the reaction column 1, mixes with the wastewater, and reacts, thereby removing COD and TOC from the wastewater, reducing its color, and achieving advanced wastewater treatment. The water circulation device can pump water from the overflow zone of the reaction column 1 back to the reaction zone for a second reaction. The design of the baffle 2 extends the residence time of the wastewater within the reaction column 1, improving the reaction efficiency between the wastewater and ozone.

[0028] Specifically, baffle 2 is vertically arranged inside the reaction column 1. The bottom of baffle 2 is connected to the bottom of the reaction column 1, and the top of baffle 2 extends to the outlet 3 at the top of the reaction column 1. The outlet 3 is located on the side wall at the top of the reaction column 1, and the top of baffle 2 and the outlet 3 are flush. Inlet 4 is located on the right side (shown in the diagram) of the reaction zone at the bottom of the reaction column 1, and inlet 4 is connected to a wastewater supply device (not shown in the diagram). Initially, when wastewater is supplied into the reaction column 1, the wastewater enters through inlet 4, and then the water level in the reaction zone gradually rises until it surpasses baffle 2 and enters the overflow zone on the other side of the reaction column 1; then the water level in the overflow zone also gradually rises until it surpasses baffle 2, at which point the wastewater height reaches the height of outlet 3 and can be drained. When the water level in the reaction column 1 reaches the outlet 3, the water circulation device is also started simultaneously, pumping the wastewater in the overflow zone back into the reaction zone for recirculation.

[0029] Furthermore, a first inlet 9 and a first outlet 8 are provided at the bottom of the reaction column 1. The first inlet 9 and the first outlet 4 are located on the same side of the baffle 2, that is, on the reaction zone side of the reaction column 1; the first outlet 8 and the first outlet 3 are also located on the same side of the baffle 2, that is, on the overflow zone side of the reaction column 1. The water circulation device includes a pump body 7 and a water pipe. The input end of the pump body 7 is connected to the first outlet 8 of the overflow zone through the water pipe, and the output end of the pump body 7 is connected to the first inlet 9 of the reaction zone through the water pipe. After the pump body 7 is started, it draws the wastewater in the overflow zone of the reaction column 1 back to the reaction zone of the reaction column 1, and mixes it with the wastewater supplied at the inlet 4.

[0030] The inlet 4 is located above the first inlet 9 and is flush with the first outlet 8. When the wastewater enters through the inlet 4, it can mix with the circulating water flowing upward from the bottom, improving the mixing effect of the wastewater and the circulating water. In addition, the circulating water also contains ozone, which can increase the ozone content in the reaction zone of the reaction column 1 and improve the reaction effect of wastewater and ozone in the reaction zone.

[0031] Furthermore, the aeration disc 5 is located at the bottom directly below the reaction column 1, and can introduce gas into both the reaction zone and the overflow zone of the reaction column 1. The aeration disc 5 includes an aeration disc base 12, an aeration disc cover 13, a rubber gasket 21, and a connecting flange 22. Specifically, the aeration disc base 12 is a hemispherical structure that is smaller at the bottom and larger at the top. The aeration disc cover 13 and a diaphragm 14 are provided on the top of the aeration disc base 12. The aeration disc cover 13 can be fitted and snapped together with the circular opening of the aeration disc base 12, and the diaphragm 14 is pressed tightly against the circular opening at the top of the aeration disc base 12. The middle of the aeration disc cover 13 has a through hole, exposing the diaphragm 14. An air chamber is formed below the membrane 14 and inside the aeration disc base 12. Several evenly distributed aeration micropores 15 are also provided on the membrane 14. An air inlet 16 is provided below the aeration disc base 12, and a distribution plate 17 is installed at the air inlet 16. The air inlet 16 is connected to an ozone supply device, which continuously supplies ozone to the aeration disc 5. The supplied ozone is then dispersed to various positions of the aeration disc 5 through the distribution plate 17, and finally enters the reaction zone and overflow zone of the reaction column 1 through the aeration micropores 15 to mix with the wastewater. A check valve 18 is also provided on the distribution plate 17 to prevent gas backflow.

[0032] The aeration disc cover 13 and the aeration disc base 12 are fixed together by the connecting flange 22 and connected to the bottom of the reaction column 1. A rubber gasket 21 is also provided between the aeration disc cover 13 and the connecting flange 12 to protect the aeration disc cover 13 and the membrane 14, while increasing the sealing of the aeration disc 5.

[0033] Catalyst packing 6 is installed in the middle of the reaction column 1. Specifically, the radial dimension of the reaction column 1 section with catalyst packing 6 is larger than the radial dimension of the main body of the reaction column 1. This allows for a larger placement of catalyst packing 6, improving the catalytic effect, and also allows for the placement of filters and support frames (not shown in the figure) on this section, which can then be used to fill the catalyst packing 6. It should be noted that the particle size of the catalyst packing 6 is not uniform; the bottom catalyst packing 6 has a larger particle size, while the top catalyst packing 6 has a smaller particle size. This effectively prevents clogging within the reaction column 1. The larger particle size of the bottom catalyst packing 6 and the larger gaps between the catalyst packing 6 allow for easier passage of gas and wastewater. The smaller particle size of the top catalyst packing 6 and the smaller gaps between the catalyst packing 6 allow gas and wastewater to pass through the catalyst packing 6 under gas and water pressure, thus improving the catalytic effect of the catalyst packing 6.

[0034] A first observation mirror 10 is installed above the inlet 4 and below the catalyst packing 6. The first observation mirror 10 allows operators to observe the wastewater at the inlet 4, mainly focusing on the color of the wastewater; and at this location, the wastewater has a relatively high color. A second observation mirror 11 is arranged below and near the outlet 3. The second observation mirror 11 allows operators to observe the wastewater at the outlet 3, where the wastewater has a low color or is nearly colorless; through the observation of the second observation mirror 11, operators can adjust the wastewater flow rate, ozone supply rate, etc., according to the wastewater color to achieve appropriate wastewater discharge standards.

[0035] Two vent pipes 19 are installed directly below the reaction column 1, one at the bottom of the reaction zone and the other at the bottom of the overflow zone. These vent pipes are designed to drain wastewater from both zones of the reaction column 1. Drainage is only required when cleaning or maintenance is needed. An exhaust pipe 20 is located directly above the reaction column 1. An exhaust gas breaker (not shown in the figure) is installed on the exhaust pipe 20. The exhaust pipe 20 discharges excess gas from the reaction column 1, and the exhaust gas breaker ensures that the gas is completely reacted, preventing it from being released into the air and causing environmental pollution.

Claims

1. An ozone reactor wastewater treatment device, characterized in that, The device includes a reaction column, inside which a baffle is provided. The bottom of the baffle is in contact with the bottom of the reaction column, and the top of the baffle extends to the outlet on the side of the top of the reaction column. An aeration disc and a water circulation device are also provided at the bottom of the reaction column, and catalyst packing is provided in the middle of the reaction column.

2. The ozone reactor wastewater treatment device according to claim 1, characterized in that, The water circulation device includes a pump body, and a first inlet and a first outlet are provided at the bottom of the reaction column. The first inlet and the first outlet are located on both sides of the partition. The pump body is connected to the first inlet and the first outlet respectively through water pipes.

3. The ozone reactor wastewater treatment device according to claim 2, characterized in that, The bottom of the reaction column is also provided with a water inlet, which is located on the same side of the partition as the first water inlet and is located above the first water inlet.

4. The ozone reactor wastewater treatment device according to claim 3, characterized in that, A first observation mirror is provided above the water inlet and below the catalyst packing, and a second observation mirror is provided below the water outlet.

5. An ozone reactor wastewater treatment device according to any one of claims 1 to 4, characterized in that, The aeration disc includes an aeration disc base and an aeration disc cover. The aeration disc cover is located above the aeration disc base, and a membrane is provided between the aeration disc cover and the aeration disc base. The membrane has uniformly distributed aeration micropores.

6. The ozone reactor wastewater treatment device according to claim 5, characterized in that, The aeration disc base is provided with an air inlet at the bottom, and the air inlet is equipped with a diverter plate and a check valve.

7. An ozone reactor wastewater treatment device according to any one of claims 1 to 4, characterized in that, The bottom of the reaction column is also provided with vent pipes located on both sides of the partition.

8. An ozone reactor wastewater treatment device according to any one of claims 1 to 4, characterized in that, The catalyst packing is granular, with the particle size of the catalyst packing at the bottom being larger than that at the top.

9. An ozone reactor wastewater treatment device according to any one of claims 1 to 4, characterized in that, The top of the reaction column is also equipped with an exhaust pipe, and an exhaust gas destroyer is also installed at the exhaust pipe.

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