Ozone coupling reaction device

Abstract

The utility model discloses an ozone coupling reaction device which comprises an ozone generator, a microbubble instrument, a reaction column, a solution tank, a water sample tank, an ozone tail gas destroying device, a liquid mixing device, a circulating pump, a quantitative feeding pump and a sample injection pump, an aeration device is arranged at the bottom of the reaction column, and the ozone generator and the aeration device are connected with the microbubble instrument; a top cover assembly is arranged at the bottom of the reaction column, a heterogeneous catalyst supporting layer is arranged in the reaction column, two circulating water outlets are formed in one side of the reaction column, one circulating water outlet is connected with a liquid mixing device, and the other circulating water outlet is connected with the liquid mixing device through a circulating pump. Through the structure, a proper process can be selected according to actual engineering requirements, so that effluent data is more credible, ozone can enter the reactor in the form of microbubbles, and the ozone can be further scattered and uniformly distributed in the reactor by the supporting layer, so that the efficiency of degrading COD in wastewater by the whole reaction system is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of industrial wastewater treatment by ozone coupling process, and particularly relates to an ozone coupling reaction device. Background Technique

[0002] In recent years, with the rapid development of industries such as pharmaceuticals, coking, petrochemicals, photovoltaic, and printing and dyeing, the types and contents of organic substances in industrial wastewater have been continuously increasing, and the difficulty of wastewater degradation has also been continuously increasing. Relying solely on biochemical treatment to remove organic substances in water, the effluent cannot meet the discharge standards. The redox potential of ozone itself is 2.07V, and it has relatively strong oxidation ability. The ozone oxidation process is one of the widely used advanced treatment processes for industrial wastewater. However, the reaction between ozone oxidation and pollutants has unique selectivity, resulting in a relatively low ozone utilization rate. Therefore, it is necessary to add a catalyst in the ozone oxidation system or couple ozone with other processes to improve the ability of the ozone oxidation process to degrade organic pollutants.

[0003] Current researchers have improved the removal ability of the reaction system by adding heterogeneous catalysts to the ozone reaction device or coupling ozone with processes such as ultraviolet light and hydrogen peroxide. The degradation effects of different wastewaters in different ozone coupling processes are different. Therefore, it is necessary to conduct small-scale tests before selecting the process for industrial wastewater. However, the current small-scale test devices cannot compare the efficiencies between different coupling processes. There are also problems such as too large bubbles when ozone enters the reaction device through the aeration head, which affects the ozone mass transfer effect, and uneven mixing of hydrogen peroxide and wastewater before the reaction during the ozone coupling hydrogen peroxide test. Therefore, the utility model provides an ozone coupling reaction device to solve the problems raised in the above background technique. Content of the Utility Model

[0004] The purpose of the utility model is to provide an ozone coupling reaction device, which can select a suitable process according to the removal efficiency, making the effluent data more credible and comparable. Moreover, ozone can enter the reactor in the form of microbubbles, and the supporting layer can further break up ozone and evenly distribute it in the reactor, improving the efficiency of the entire reaction system in degrading COD in wastewater.

[0005] To achieve the above object, an ozone coupling reaction device is provided, which includes an ozone generator, a microbubble instrument, a reaction column, a solution tank, a water sample tank, an ozone tail gas destruction device, a liquid mixing device, a circulation pump, a quantitative dosing pump and a sampling pump. An aeration device is provided at the bottom of the reaction column. The ozone generator and the aeration device are connected to the microbubble instrument. A top cover assembly is provided at the bottom of the reaction column. A heterogeneous catalyst support layer is provided inside the reaction column. Two circulating water outlets are provided on one side of the reaction column. One of the circulating water outlets is connected to the liquid mixing device, and the other circulating water outlet is connected to the liquid mixing device through a circulation pump. The solution tank is connected to the liquid mixing device through a quantitative dosing pump. The solution tank contains a hydrogen peroxide solution or a sodium persulfate solution. A sampling port is provided on one side of the reaction column near the bottom. The sampling port is connected to the water sample tank through a sampling pump. An overflow port is provided on one side of the reaction column near the top. An air outlet is provided at the top of the reaction column. The air outlet is connected to the ozone tail gas destruction device.

[0006] According to the ozone coupling reaction device described above, the top cover assembly includes a cover plate installed at the top of the reaction column, and the air outlet is opened inside the cover plate.

[0007] According to the ozone coupling reaction device described above, the top cover assembly includes a cover plate installed at the top of the reaction column and an ultraviolet lamp tube provided inside the cover plate.

[0008] According to the ozone coupling reaction device described above, the ozone generator and the microbubble instrument are connected by a silica gel tube. The water sample tank, the sampling pump and the sampling port are also connected by a silica gel tube. The solution tank, the quantitative dosing pump and the liquid mixing device are also all connected by a silica gel tube.

[0009] According to the ozone coupling reaction device described above, the material of the reaction column is set as acrylic or stainless steel.

[0010] According to the ozone coupling reaction device described above, both the cover plate and the heterogeneous catalyst support layer are connected to the reaction column through flange fasteners.

[0011] The utility model has the following beneficial effects:

[0012] 1. Compared with the prior art, this ozone coupling reaction device can compare the removal efficiencies of different ozone coupling processes for treating the same wastewater, and can select a suitable process according to the removal efficiency, reducing the error of manual operation in the comparative experiment and making the effluent data more credible. Moreover, ozone can enter the reactor in the form of microbubbles, and the support layer can further break up the ozone and evenly distribute it in the reactor, improving the efficiency of the entire reaction system for degrading COD in the wastewater.

[0013] 2. Compared with the prior art, this ozone coupling reaction device can be quickly installed and disassembled according to different process requirements, thereby reducing working time and facilitating the improvement of work efficiency.

[0014] Additional aspects and advantages of the present invention will be given in part in the following description, become apparent in part from the following description, or be understood through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The present invention will be further described below in conjunction with the drawings and embodiments;

[0016] Figure 1 It is a schematic diagram of the overall structure of an ozone coupling reaction device of the present invention;

[0017] Figure 2 It is a first schematic diagram of the top cover assembly of an ozone coupling reaction device of the present invention;

[0018] Figure 3 It is a second schematic diagram of the top cover assembly of an ozone coupling reaction device of the present invention.

[0019] Legend Explanation:

[0020] 1. Ozone generator; 2. Microbubble instrument; 3. Reaction column; 4. Aeration device; 5. Top cover assembly; 6. Flange buckle; 7. Circulating water outlet; 8. Heterogeneous catalyst support layer; 9. Liquid mixing device; 10. Quantitative dosing pump; 11. Solution tank; 12. Overflow port; 13. Sampling port; 14. Ozone tail gas destruction device; 15. Sampling pump; 16. Circulation pump; 17. Air outlet hole; 18. Water sample tank; 51. Cover plate; 52. Ultraviolet lamp tube. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] This part will describe in detail the specific embodiments of the present invention. The preferred embodiments of the present invention are shown in the drawings. The role of the drawings is to supplement the description of the text part of the specification, enabling people to intuitively and vividly understand each technical feature and the overall technical solution of the present invention, but it cannot be understood as a limitation on the protection scope of the present invention.

[0022] In this embodiment, the ozone coupling device can be divided into two categories according to the type of the top cover assembly 5 and the catalyst form. One is the ozone coupling ultraviolet light device, the other is the ozone coupling hydrogen peroxide or persulfate device, and the last one is the heterogeneous catalytic ozone oxidation device.

[0023] Embodiment 1

[0024] Refer to Figures 1-3The utility model embodiment is an ozone coupling reaction device, which includes an ozone generator 1, a microbubble instrument 2, a reaction column 3, a solution tank 11, a water sample tank 18, an ozone tail gas destruction device 14, a liquid mixing device 9, a circulation pump 16, a quantitative dosing pump 10 and a sampling pump 15. An aeration device 4 is provided at the bottom of the reaction column 3. The ozone generator 1 and the aeration device 4 are connected to the microbubble instrument 2. A top cover assembly 5 is provided at the bottom of the reaction column 3. A heterogeneous catalyst supporting layer 8 is provided inside the reaction column 3. Fine pores are provided on the surface of the heterogeneous catalyst supporting layer 8. Two circulation devices are provided on one side of the reaction column 3. A circulating water outlet 7, one of which is connected to the liquid mixing device 9, and the other circulating water outlet 7 is connected to the liquid mixing device 9 through a circulating pump 16. A solution tank 11 is connected to the liquid mixing device 9 through a quantitative dosing pump 10. The solution tank 11 contains a hydrogen peroxide solution or a sodium persulfate solution. A sampling port 13 is provided on one side of the reaction column 3 near the bottom, and the sampling port 13 is connected to a water sample tank 18 through a sampling pump 15. An overflow port 12 is provided on one side of the reaction column 3 near the top. An air outlet 17 is provided on the top of the reaction column 3, and the air outlet 17 is connected to an ozone tail gas destruction device 14.

[0025] The ozone generator 1 is used to generate ozone, the microbubble instrument 2 is used to convert ozone bubbles into microbubbles, the heterogeneous catalyst supporting layer 8 is used to support the heterogeneous catalyst, and the solution tank 11 provides a coupling process solution; the quantitative dosing pump 10 is used to quantitatively add the reaction solution, the liquid mixing device 9 is a liquid mixing connector used to fully mix industrial waste water and solutions such as hydrogen peroxide, the ozone tail gas destruction device 14 is used to absorb the ozone tail gas after the reaction, and the aeration device 4 can be an aeration head or an air distribution plate.

[0026] The top cover assembly 5 includes a cover plate 51 installed on the top of the reaction column 3 and an ultraviolet lamp tube 52 arranged inside the cover plate 51 .

[0027] Ozone-coupled ultraviolet light device: a cover plate 51 is used with an ultraviolet light tube 52 installed thereon, and the main reactor components include an ozone generator 1, a microbubble instrument 2, a reaction column 3, a cover plate 51, a circulating water outlet 7; a heterogeneous catalyst support layer 8, an overflow port 12, an injection port 13 and an ozone tail gas destruction device 14;

[0028] The reaction is started by turning on the sample injection pump 15 to start the injection, and the experiment is started after the water sample fills the reaction column 3, and the circulation pump 16 between the circulating water outlets 7 is turned on, and then the ultraviolet lamp 52 is turned on, and the ozone generator 1 and the microbubble instrument 2 are turned on to start timing, and samples are taken at certain time intervals.

[0029] Example 2

[0030] The top cover assembly 5 includes a cover plate 51 installed on the top of the reaction column 3 , and the gas outlet 17 is opened inside the cover plate 51 .

[0031] Ozone coupled with hydrogen peroxide or persulfate device: The reaction column 3 uses the cover plate 51. The main reactor components include an ozone generator 1, a microbubble instrument 2, a reaction column 3, a cover plate 51, a circulating water outlet 7, a heterogeneous catalyst support layer 8, a liquid mixing device 9, a metering pump 10, a solution tank 11, an overflow port 12, a sampling port 13, and an ozone tail gas destruction device 14;

[0032] At the beginning of the reaction, turn on the sampling pump 15 to start sampling. After filling the reaction column 3 with the water sample, start the experiment. Turn on the metering pump 10. When the hydrogen peroxide or sodium persulfate solution starts to flow into the liquid mixing device 9, turn on the circulation pump 16 between the circulating water outlets 7. Wait until the wastewater water sample is mixed evenly with the externally added hydrogen peroxide / sodium persulfate, then turn on the ozone generator 1 and the microbubble instrument 2 to start timing, and sample at certain time intervals.

[0033] Example 3

[0034] Heterogeneous catalytic ozone oxidation device: The reaction column 3 uses the cover plate 51. The main reactor components include an ozone generator 1, a microbubble instrument 2, a reaction column 3, a cover plate 51, a circulating water outlet 7, and a heterogeneous catalyst support layer 8;

[0035] At the beginning of the reaction, turn on the sampling pump 15 to start sampling. After filling the reaction column 3 with the water sample, add a certain amount of heterogeneous catalyst. After turning on the circulation pump 16 between the circulating water outlets 7, start the experiment. Turn on the ozone generator 1 and the microbubble instrument 2 to start timing, and sample at certain time intervals.

[0036] The ozone generator 1 and the microbubble instrument 2 are connected by a silica gel tube. The water sample tank 18, the sampling pump 15, and the sampling port 13 are also connected by a silica gel tube. The solution tank 11, the metering pump 10, and the liquid mixing device 9 are also all connected by silica gel tubes. The material of the reaction column 3 is set as acrylic or stainless steel. The cover plate 51 and the heterogeneous catalyst support layer 8 are both connected to the reaction column 3 through the flange buckle 6, which is convenient for opening and disassembling the reaction column 3.

[0037] Working principle: Ozone coupled with ultraviolet light device: At the beginning of the reaction, turn on the sampling pump 15 to start sampling. After filling the reaction column 3 with the water sample, start the experiment. Turn on the circulation pump 16 between the circulating water outlets 7. Then turn on the ultraviolet lamp tube 52, turn on the ozone generator 1 and the microbubble instrument 2 to start timing, and sample at certain time intervals;

[0038] Ozone coupled with hydrogen peroxide or persulfate device: To start the reaction, turn on the sampling pump 15 to start sampling. After filling the reaction column 3 with the water sample, start the experiment. Turn on the metering dosing pump 10. When the hydrogen peroxide or sodium persulfate solution starts to flow into the liquid mixing device 9, turn on the circulation pump 16 between the circulating water outlet 7. Wait until the wastewater sample is evenly mixed with the externally added hydrogen peroxide / sodium persulfate, then turn on the ozone generator 1 and the microbubble instrument 2 to start timing, and take samples at certain time intervals;

[0039] Heterogeneous catalytic ozonation device: To start the reaction, turn on the sampling pump 15 to start sampling. After filling the reaction column 3 with the water sample, add a certain amount of heterogeneous catalyst. After turning on the circulation pump 16 between the circulating water outlet 7, start the experiment. Turn on the ozone generator 1 and the microbubble instrument 2 to start timing, and take samples at certain time intervals.

[0040] This reaction device can compare the removal efficiencies of different ozone coupling processes for the same wastewater, and can select a suitable process according to the removal efficiency, reducing the error of manual operation in the comparative experiment and making the effluent data more credible; moreover, ozone can enter the reactor in the form of microbubbles, and the support layer can further break up the ozone and evenly distribute it in the reactor, improving the efficiency of the entire reaction system in degrading COD in the wastewater. At the same time, it can be quickly installed and disassembled according to different process requirements, thus reducing the working time and being conducive to improving work efficiency.

[0041] The above has described the embodiments of the present invention in detail with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the knowledge scope of those of ordinary skill in the art in the said technical field, various changes can also be made without departing from the gist of the present invention.

Claims

1. An ozone coupling reaction device, characterized in that, It includes an ozone generator (1), a microbubble instrument (2), a reaction column (3), a solution tank (11), a water sample tank (18), an ozone tail gas destruction device (14), a liquid mixing device (9), a circulation pump (16), a metering dosing pump (10) and a sampling pump (15). An aeration device (4) is provided at the bottom of the reaction column (3). The ozone generator (1) and the aeration device (4) are connected to the microbubble instrument (2). A top cover assembly (5) is provided at the bottom of the reaction column (3). A heterogeneous catalyst support layer (8) is provided inside the reaction column (3). Two circulating water outlets (7) are provided on one side of the reaction column (3). One of the circulating water outlets (7) is connected to the liquid mixing device (9), and the other circulating water outlet (7) is connected to the liquid mixing device (9) through the circulation pump (16). The solution tank (11) is connected to the liquid mixing device (9) through the metering dosing pump (10). The solution tank (11) contains a hydrogen peroxide solution or a sodium persulfate solution. An injection port (13) is provided on one side of the reaction column (3) near the bottom. The injection port (13) is connected to the water sample tank (18) through the sampling pump (15). An overflow port (12) is provided on one side of the reaction column (3) near the top. An air outlet hole (17) is provided at the top of the reaction column (3). The air outlet hole (17) is connected to the ozone tail gas destruction device (14).

2. The ozone coupling reaction device according to claim 1, characterized in that, The top cover assembly (5) includes a cover plate (51) installed at the top of the reaction column (3), and the air outlet hole (17) is opened inside the cover plate (51).

3. The ozone coupling reaction device according to claim 1, characterized in that, The top cover assembly (5) includes a cover plate (51) installed at the top of the reaction column (3) and an ultraviolet lamp tube (52) provided inside the cover plate (51).

4. An ozone coupling reaction device according to claim 3, characterized in that, The ozone generator (1) and the microbubble instrument (2) are connected by a silica gel tube. The water sample tank (18), the sampling pump (15) and the injection port (13) are also connected by a silica gel tube. The solution tank (11), the metering dosing pump (10) and the liquid mixing device (9) are also all connected by a silica gel tube.

5. An ozone coupling reaction device according to claim 4, characterized in that, The material of the reaction column (3) is set to acrylic or stainless steel.

6. An ozone coupling reaction device according to claim 5, characterized in that, The cover plate (51) and the heterogeneous catalyst support layer (8) are both connected to the reaction column (3) through flange fasteners (6).

Images