Efficient ozone gas dissolving device for sewage treatment

Abstract

The utility model provides an efficient ozone gas dissolving device for sewage treatment, and relates to the technical field of sewage treatment. The air dissolving device comprises an air dissolving tank which is communicated with a water inlet pipe and an air inlet pipe; wherein an annular shell is arranged on the outer ring surface of the dissolved air tank in the circumferential direction, and a buffer cavity is defined by the annular shell and the dissolved air tank; the aeration disc is arranged in the dissolved air tank and is communicated with the air inlet pipe; the flow guide assembly comprises a flow guide pipe, a first electromagnetic valve and a pressure gauge, the two ends of the flow guide pipe communicate with the dissolved air tank and the buffer cavity correspondingly, and the first electromagnetic valve is arranged on the flow guide pipe; the pressure relief assembly comprises a drainage pipe and a second electromagnetic valve, the drainage pipe is used for drainage of the buffer cavity, and the second electromagnetic valve is arranged on the drainage pipe; the stirring assembly comprises a first turbine, a second turbine and a transmission part, the first turbine is rotatably arranged in the drainage pipe, the second turbine is rotatably arranged in the buffer cavity, and the transmission part is in transmission connection with the first turbine and the second turbine. According to the gas dissolving device, the dissolved amount of ozone in sewage is increased.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment technology, and more specifically, to a high-efficiency ozone dissolved gas device for wastewater treatment. Background Technology

[0002] Ozone dissolved air treatment devices for wastewater treatment, as key equipment focused on enhancing the mixing and dissolution process of ozone with wastewater to improve wastewater treatment efficiency, have their core function of efficiently integrating ozone gas into the wastewater system. Leveraging the powerful oxidizing ability of ozone, this device can rapidly decompose recalcitrant organic matter in wastewater, converting it into harmless substances such as carbon dioxide and water. Simultaneously, it can effectively remove heavy metal ions from wastewater, using oxidation to cause these ions to precipitate or transform into forms more suitable for subsequent treatment.

[0003] Under current technological conditions, to increase the solubility of ozone in wastewater, ozone dissolving devices typically install aeration discs at the ozone outlet. The working principle of the aeration discs is based on dispersing ozone gas into tiny bubbles, thereby significantly increasing the contact area between ozone and wastewater. When ozone gas passes through the numerous fine pores on the aeration disc, it generates a large number of tiny bubbles. These bubbles rise slowly in the wastewater, promoting thorough contact and mixing between the ozone gas and the wastewater. With the significantly expanded contact area, the solubility of ozone in the wastewater is increased, thereby enhancing the oxidative decomposition efficiency of ozone on pollutants in the wastewater. Furthermore, the rising of the tiny bubbles generated by the aeration discs also agitates the wastewater, further promoting the mass transfer process between ozone and wastewater, allowing ozone to be more evenly distributed in the wastewater and improving ozone utilization efficiency.

[0004] Although the initial intention of adding aeration discs at the ozone outlet was to increase the solubility of ozone in wastewater, the actual application effect has not been satisfactory. Wastewater composition is extremely complex, with suspended particles, colloidal substances, and microorganisms easily accumulating on the surface and in the pores of the aeration discs. This phenomenon severely hinders the dispersion of ozone gas into uniform microbubbles, greatly reducing the effective contact area between ozone and wastewater. As a result, ozone is difficult to fully dissolve, and a large amount of ozone escapes directly without dissolving, making it difficult to achieve the expected dissolution rate. Moreover, the structural characteristics of the aeration discs themselves limit their adaptability to different wastewater qualities. When faced with high-viscosity, high-turbidity wastewater, bubbles tend to merge and enlarge, failing to form the microbubble clusters necessary for efficient gas dissolution. This further weakens the ozone dissolution capacity, resulting in the ozone dissolution rate still failing to meet the stringent requirements for ozone dissolution in efficient wastewater treatment. Utility Model Content

[0005] The purpose of this invention is to provide a high-efficiency ozone dissolved gas device for wastewater treatment, which aims to solve the technical problems mentioned in the background art.

[0006] The embodiments of this utility model are implemented as follows:

[0007] This application provides a high-efficiency ozone dissolved air device for wastewater treatment, comprising: a dissolved air tank connected to an inlet pipe and an air inlet pipe, wherein the inlet pipe is used to connect to an external wastewater source, and the air inlet pipe is used to connect to an external ozone source; wherein, an annular shell is circumferentially arranged on the outer ring surface of the dissolved air tank, and the annular shell and the dissolved air tank form a buffer cavity; an aeration disc disposed inside the dissolved air tank and connected to the air inlet pipe; and a flow guiding assembly including a flow guiding pipe, a first solenoid valve, and a pressure gauge, wherein the two ends of the flow guiding pipe are respectively connected to the dissolved air tank and the buffer cavity, and the first solenoid valve is provided with... The aforementioned guide pipe is used to adjust the opening and closing of the guide pipe, and the pressure gauge is used to detect the internal pressure of the buffer chamber; the pressure relief assembly includes a drain pipe and a second solenoid valve, the drain pipe is used to drain water from the buffer chamber, and the second solenoid valve is disposed on the drain pipe to adjust the opening and closing of the guide pipe; and the stirring assembly includes a first turbine, a second turbine, and a transmission part, the first turbine is rotatably disposed in the drain pipe, the second turbine is rotatably disposed in the buffer chamber, and the transmission part drivesly connects the first turbine and the second turbine.

[0008] Furthermore, based on the aforementioned scheme, the aforementioned guide pipe is connected to the top of the aforementioned dissolved gas tank, and the aforementioned water inlet pipe is located at the bottom of the aforementioned dissolved gas tank;

[0009] The inner side of the dissolved gas tank is vertically equipped with spiral guide vanes.

[0010] Furthermore, based on the aforementioned scheme, it also includes an ultrasonic generator and an ultrasonic transducer that cooperate with each other, wherein the ultrasonic transducer is used to emit ultrasonic waves into the buffer cavity.

[0011] Furthermore, based on the aforementioned scheme, one end of the drain pipe is connected to the bottom of the buffer chamber, and the other end extends to the bottom of the dissolved gas tank.

[0012] Furthermore, based on the aforementioned scheme, a support frame is also included to support the aforementioned annular shell.

[0013] Furthermore, based on the aforementioned scheme, a support column is provided inside the buffer cavity for connecting the dissolved gas tank and the annular shell.

[0014] Furthermore, based on the aforementioned scheme, the number of the aforementioned support columns is multiple.

[0015] Compared with the prior art, the embodiments of this utility model have at least the following advantages or beneficial effects:

[0016] The ozone high-efficiency dissolved air device for wastewater treatment provided in this application embodiment has a sophisticated operating principle. In the initial stage of actual operation, the first solenoid valve remains open, while the second solenoid valve is closed. The inlet pipe of the external wastewater source and the inlet pipe of the external ozone source operate synchronously, allowing wastewater to flow smoothly into the dissolved air tank. Ozone is dispersed through the aeration disc and initially mixed with the wastewater, then flows into the buffer chamber formed by the annular shell and the dissolved air tank. As ozone is continuously introduced, the pressure inside the buffer chamber gradually increases. When the pressure gauge reaches a threshold preset by the technician, the first solenoid valve is immediately closed, and the second solenoid valve is opened. At this time, the wastewater and ozone mixture in the buffer chamber is discharged through the drain pipe. During this drainage process, the water flow powerfully impacts and drives the first turbine to rotate. The first turbine, through a transmission unit, further drives the second turbine in the buffer chamber, thereby agitating the wastewater in the dissolved air tank. This device offers significant advantages. First, the wastewater and ozone mixture is pre-mixed in the dissolved air tank, and then mixed again under high pressure in the buffer chamber. This design allows ozone to dissolve more fully in the wastewater, effectively overcoming the problem of insufficient ozone dissolution in traditional devices. Second, when the wastewater in the buffer chamber is discharged through the drain pipe, the water flow impacts the first turbine, which in turn drives the second turbine in the dissolved air tank to rotate via the transmission unit. This means that, except for the gas-liquid mixture initially discharged from the buffer chamber, all subsequent wastewater dissolved air treatment processes benefit from the stirring effect of the second turbine, significantly improving the efficiency of subsequent wastewater dissolved air treatment. Furthermore, this device cleverly utilizes the water flow during drainage to drive the turbine rotation for stirring, eliminating the need for an additional power unit. This greatly saves energy and effectively enhances the mixing effect of wastewater and ozone, significantly improving its adaptability to different wastewater qualities and fully meeting the stringent requirements of high-efficiency wastewater treatment for ozone dissolved air. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 An isometric view of an ozone high-efficiency dissolved air device for wastewater treatment according to an embodiment of this utility model. Figure 1 ;

[0019] Figure 2 An isometric view of an ozone high-efficiency dissolved air device for wastewater treatment according to an embodiment of this utility model. Figure 2 ;

[0020] Figure 3 This is a cross-sectional view of a high-efficiency ozone dissolved air device for wastewater treatment according to an embodiment of the present invention. Figure 1 ;

[0021] Figure 4 This is a cross-sectional view of a high-efficiency ozone dissolved air device for wastewater treatment according to an embodiment of the present invention. Figure 2 ;

[0022] Figure 5 for Figure 3 A magnified view of part A in the image.

[0023] Icons: 1-Dissolved gas tank, 2-Annular shell, 3-Pressure gauge, 4-Guide pipe, 5-First solenoid valve, 6-Ultrasonic generator, 7-Support frame, 8-Air inlet pipe, 9-Drain pipe, 10-Second solenoid valve, 11-Water inlet pipe, 12-Buffer chamber, 13-Ultrasonic transducer, 14-Support column, 15-First turbine, 16-Second turbine, 17-Transmission unit, 18-Aeration disc, 19-Spiral guide vane. Detailed Implementation

[0024] The embodiments of this application will now be described in detail with reference to the accompanying drawings. Example

[0025] Please refer to Figures 1-5 This application provides an efficient ozone dissolved air device for wastewater treatment, comprising: a dissolved air tank 1, which is connected to an inlet pipe 11 and an air inlet pipe 8, wherein the inlet pipe 11 is used to connect to an external wastewater source, and the air inlet pipe 8 is used to connect to an external ozone source; wherein, an annular shell 2 is circumferentially arranged on the outer ring surface of the dissolved air tank 1, and the annular shell 2 and the dissolved air tank 1 form a buffer cavity 12; an aeration disc 18 is disposed in the dissolved air tank 1 and is connected to the air inlet pipe 8; a flow guiding assembly, including a flow guiding pipe 4, a first solenoid valve 5 and a pressure gauge 3, wherein the two ends of the flow guiding pipe 4 are respectively connected to the dissolved air tank 1 and the buffer cavity 12, and the first solenoid valve 5 is disposed in the flow guiding pipe 4. The flow pipe 4 is used to adjust the opening and closing of the flow pipe 4, and the pressure gauge 3 is used to detect the internal pressure of the buffer chamber 12; the pressure relief assembly includes a drain pipe 9 and a second solenoid valve 10, the drain pipe 9 is used for draining the buffer chamber 12, and the second solenoid valve 10 is disposed on the drain pipe 9 to adjust the opening and closing of the flow pipe 4; and the stirring assembly includes a first turbine 15, a second turbine 16 and a transmission part 17, the first turbine 15 is rotatably disposed in the drain pipe 9, the second turbine 16 is rotatably disposed in the buffer chamber 12, and the transmission part 17 is drivingly connected to the first turbine 15 and the second turbine 16.

[0026] The ozone high-efficiency dissolved air device for wastewater treatment provided in this application embodiment has a sophisticated operating principle. In the initial stage of actual operation, the first solenoid valve 5 remains open, while the second solenoid valve 10 is closed. The inlet pipe 11 of the external wastewater source and the inlet pipe 8 of the external ozone source operate synchronously, allowing wastewater to flow smoothly into the dissolved air tank 1. After the ozone is dispersed by the aeration disc 18, it undergoes a preliminary mixture with the wastewater and then flows into the buffer chamber 12 formed by the annular shell 2 and the dissolved air tank 1. As ozone is continuously introduced, the pressure inside the buffer chamber 12 gradually increases. When the pressure displayed by the pressure gauge 3 reaches the threshold preset by the technician, the first solenoid valve 5 is immediately closed, and the second solenoid valve 10 is opened. At this time, the wastewater and ozone mixture in the buffer chamber 12 is discharged through the drain pipe 9. During this drainage process, the water flow powerfully impacts and drives the first turbine 15 to rotate. The first turbine 15, through the transmission part 17, further drives the second turbine 16 inside the buffer chamber 12, thereby causing the second turbine 16 to agitate the wastewater in the dissolved air tank 1. This device boasts several key advantages: First, the wastewater and ozone mixture is pre-mixed in the dissolved air tank 1, and then further mixed under high pressure in the buffer chamber 12. This design allows ozone to dissolve more fully in the wastewater, effectively overcoming the problem of insufficient ozone dissolution in traditional devices. Second, when the wastewater in the buffer chamber 12 is discharged through the drain pipe 9, the water flow impacts the first turbine 15, which in turn drives the second turbine 16 in the dissolved air tank 1 to rotate via the transmission unit 17. This means that, except for the initial gas-liquid mixture discharged from the buffer chamber 12, all subsequent wastewater dissolved air treatment processes benefit from the stirring effect of the second turbine 16, significantly improving the efficiency of subsequent wastewater dissolved air treatment. Furthermore, this device cleverly utilizes the water flow during drainage to drive the turbine rotation for stirring, eliminating the need for an additional power unit. This not only greatly saves energy but also effectively enhances the mixing effect of wastewater and ozone, significantly improving its adaptability to different wastewater qualities and fully meeting the stringent requirements of high-efficiency wastewater treatment for ozone dissolved air.

[0027] In a preferred embodiment, the aforementioned guide pipe 4 is connected to the top of the aforementioned dissolved gas tank 1, and the aforementioned water inlet pipe 11 is located at the lower part of the aforementioned dissolved gas tank 1.

[0028] The dissolved gas tank 1 is provided with a spiral guide vane 19 on its inner side.

[0029] In the above embodiment, wastewater enters the dissolved air tank 1 from the bottom and flows upward during the mixing process with ozone. The guide pipe 4, connected from the top, promptly introduces the mixed gas and liquid into the buffer chamber 12, preventing excessive accumulation of gas and liquid within the tank. Simultaneously, the vertically arranged spiral guide vanes 19 on the inner side of the dissolved air tank 1 play a crucial role. They guide the mixed fluid of wastewater and ozone upward along a spiral path, significantly increasing the flow path and time of the mixture within the tank. This allows for more thorough contact and reaction between ozone and wastewater, significantly improving the ozone dissolution efficiency and mixing effect, thereby enhancing the overall performance of the high-efficiency ozone dissolved air device for wastewater treatment.

[0030] In a preferred embodiment, it also includes an ultrasonic generator 6 and an ultrasonic transducer 13 that cooperate with each other, wherein the ultrasonic transducer 13 is used to emit ultrasonic waves into the buffer cavity 12.

[0031] In the above embodiment, ultrasound can generate a cavitation effect in the wastewater-ozone mixture within the buffer chamber 12, forming a large number of tiny bubbles that burst instantaneously. The localized high-temperature and high-pressure environment generated in this process can effectively reduce the mass transfer resistance of ozone, promoting faster dissolution of ozone in the wastewater. Simultaneously, the mechanical vibration of ultrasound enhances the turbulence of the mixture, making the ozone bubbles more evenly distributed in the wastewater, further increasing the contact area between ozone and wastewater, significantly improving the ozone dissolution efficiency and utilization, thereby greatly enhancing the overall wastewater treatment capacity and effectiveness of the device.

[0032] In a preferred embodiment, one end of the drain pipe 9 is connected to the bottom of the buffer chamber 12, and the other end extends to the bottom of the dissolved gas tank 1.

[0033] In the above embodiment, one end of the drain pipe 9 is connected to the bottom of the buffer chamber 12 and the other end extends to the bottom of the dissolved gas tank 1. Under the dual action of gravity and the internal pressure of the buffer chamber 12, the mixed liquid is efficiently discharged. This not only directly impacts the first turbine 15 to drive its operation, but also ensures the stable and efficient drainage and driving power, thereby improving the overall performance of the device.

[0034] Optionally, the end of the drain pipe 9 away from the buffer chamber 12 is vertically arranged, and the transmission part 17 is a rod body, which is vertically arranged and extends into the drain pipe 9 and the dissolved gas tank 1 at both ends respectively.

[0035] In a preferred embodiment, a support frame 7 is also included for supporting the annular shell 2.

[0036] In the above embodiment, the support frame 7 is provided to support the annular shell 2, which can provide a stable support structure for the annular shell 2, ensure its stability during the operation of the device, protect the structural integrity of the buffer chamber 12, and thus enable the entire ozone high-efficiency dissolved air device for sewage treatment to operate stably and reliably.

[0037] In a preferred embodiment, a support column 14 is provided in the buffer cavity 12 for connecting the dissolved gas tank 1 and the annular shell 2.

[0038] In the above embodiment, a support column 14 connecting the dissolved gas tank 1 and the annular shell 2 is provided in the buffer chamber 12, which can effectively enhance the structural stability between the dissolved gas tank 1 and the annular shell 2, ensure that the buffer chamber 12 maintains a reliable operating state under working conditions such as pressure changes, and improve the stability of the entire device.

[0039] In a preferred embodiment, the number of the aforementioned support columns 14 is multiple.

[0040] In the above embodiments, the arrangement of multiple support columns 14 can provide support for the dissolved gas tank 1 and the annular shell 2 from multiple points, greatly enhancing the stability of the buffer chamber 12 structure, better coping with the complex pressure changes inside the buffer chamber 12, and ensuring the stable and efficient operation of the device.

[0041] Furthermore, unless otherwise explicitly specified or limited, the terms "installation" and "connection" in this application embodiment should be interpreted broadly. For example, "connection" can be a detachable connection or a non-detachable connection; it can be a direct connection or an indirect connection through an intermediate medium. The terms "upper," "lower," "left," "right," "inner," "outer," and "side," etc., are merely for reference to the direction in the accompanying drawings or the usual placement of the product during use. They are only for clearly describing this application and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. They should not be construed as limitations on this application. The terms "first," "second," etc., are only used for distinguishing descriptions and should not be construed as indicating or implying relative importance; "multiple" refers to at least two. In this application embodiment, the limitations on relative positional relationships such as parallel, perpendicular, and aligned are all relative to the current technological level and are not absolutely strict limitations. Slight deviations are allowed; approximations of parallel, perpendicular, and aligned are all acceptable. For example, "A and B are parallel" means that A and B are parallel or approximately parallel, and the angle between A and B can be between 0 degrees and 10 degrees.

[0042] The above are only some embodiments and implementation methods of this application. The protection scope of this application is not limited thereto. In the absence of conflict, the embodiments and features in the embodiments of this application can be combined with each other. Any combination of features in different embodiments is also within the protection scope of this application. Any changes or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the protection scope of this application.

Claims

1. A high-efficiency ozone dissolved air device for wastewater treatment, characterized in that, include: A dissolved air tank (1) is connected to a water inlet pipe (11) and an air inlet pipe (8). The water inlet pipe (11) is used to connect to an external sewage source, and the air inlet pipe (8) is used to connect to an external ozone source. The outer ring surface of the dissolved gas tank (1) is provided with an annular shell (2), and the annular shell (2) and the dissolved gas tank (1) form a buffer cavity (12). An aeration disc (18) is installed inside the dissolved air tank (1) and is connected to the air inlet pipe (8); The flow guiding assembly includes a flow guiding pipe (4), a first solenoid valve (5), and a pressure gauge (3). The two ends of the flow guiding pipe (4) are respectively connected to the dissolved gas tank (1) and the buffer chamber (12). The first solenoid valve (5) is installed on the flow guiding pipe (4) and is used to adjust the opening and closing of the flow guiding pipe (4). The pressure gauge (3) is used to detect the internal pressure of the buffer chamber (12). The pressure relief assembly includes a drain pipe (9) and a second solenoid valve (10). The drain pipe (9) is used for draining the buffer chamber (12), and the second solenoid valve (10) is disposed on the drain pipe (9) for adjusting the opening and closing of the guide pipe (4). as well as The stirring assembly includes a first turbine (15), a second turbine (16), and a transmission unit (17). The first turbine (15) is rotatably disposed in the drain pipe (9), and the second turbine (16) is rotatably disposed in the buffer chamber (12). The transmission unit (17) drives the first turbine (15) and the second turbine (16).

2. The ozone high-efficiency gas dissolving device for sewage treatment according to claim 1, characterized in that, The guide pipe (4) is connected to the top of the dissolved gas tank (1), and the water inlet pipe (11) is located at the bottom of the dissolved gas tank (1); The dissolved gas tank (1) has a spiral guide plate (19) vertically arranged on its inner side.

3. The ozone high-efficiency gas dissolving device for sewage treatment according to claim 2, characterized in that, It also includes an ultrasonic generator (6) and an ultrasonic transducer (13) that work together, the ultrasonic transducer (13) being used to emit ultrasonic waves into the buffer cavity (12).

4. The ozone high-efficiency gas dissolving device for sewage treatment according to claim 1, characterized in that, One end of the drain pipe (9) is connected to the bottom of the buffer chamber (12), and the other end extends to the bottom of the dissolved gas tank (1).

5. The ozone high-efficiency gas dissolving device for sewage treatment according to claim 1, characterized in that, It also includes a support frame (7) for supporting the annular shell (2).

6. The ozone high-efficiency gas dissolving device for sewage treatment according to claim 5, characterized in that, The buffer cavity (12) is provided with a support column (14) for connecting the dissolved gas tank (1) and the annular shell (2).

7. The ozone high-efficiency gas dissolving device for sewage treatment according to claim 6, characterized in that, The number of the support columns (14) is multiple.

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