Micro-nano ozone oxidation device for wastewater treatment
By designing dissolved gas generators and mixing components in wastewater treatment devices, and using micro-nano bubbles and spoiler technologies, the problem of poor ozone lateral diffusion ability in ozone oxidation technology is solved, and efficient mixing of ozone and wastewater is achieved, which improves treatment efficiency and reduces costs.
Patent Information
- Application Number
- CN202421598085.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-08
- Publication Date
- 2025-06-13
- Estimated Expiration
- 2034-07-08
AI Technical Summary
In the existing ozone oxidation technology, the lateral diffusion capacity of ozone is poor when mixed with wastewater, which affects the mixing efficiency. It is usually necessary to set up a mixing mechanism to increase costs and maintenance burden.
A micro-nano-ozone oxidation device is designed. By setting a dissolved gas generator and a mixing assembly in the reactor, the ozone is stably mixed in wastewater using micro-nano bubbles, and the coverage range and mixing efficiency of dissolved gas water are improved through spoiler and solenoid valve.
The efficient mixing of ozone and wastewater is achieved, the wastewater treatment efficiency is improved, additional mixing devices are eliminated, and costs and maintenance needs are reduced.
Smart Images
Figure CN222974970U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of wastewater treatment, in particular to a micro-nano ozone oxidation device for wastewater treatment. Background Technique
[0002] The complexity of industrial wastewater makes it difficult to achieve stable discharge after treatment. High-efficient, stable and economical advanced treatment technologies are one of the major demands in the industrial wastewater industry. The ozone advanced oxidation technology generates hydroxyl radicals with extremely strong oxidation ability through a chain reaction initiated by ozone. By means of the electron transfer, addition and substitution between the radicals and organic substances, harmful and toxic components in the wastewater are transformed into substances with low toxicity or no toxicity, which is a high-efficient water treatment technology.
[0003] In the prior art, the ozone oxidation technology is widely used in the advanced treatment of industrial wastewater. However, when ozone is mixed with wastewater, it will preferentially diffuse upward from the charging port, resulting in poor lateral diffusion ability of ozone and affecting the mixing efficiency of ozone and wastewater. Therefore, a special stirring mechanism usually needs to be set, increasing the cost of wastewater treatment and the cost of later maintenance. Content of the Utility Model
[0004] Aiming at the deficiencies existing in the prior art, the purpose of the utility model is to provide a micro-nano ozone oxidation device for wastewater treatment, so as to solve the technical problems mentioned in the above background technique.
[0005] The above technical purpose of the utility model is achieved through the following technical solutions:
[0006] A micro-nano ozone oxidation device for wastewater treatment includes a reaction kettle. An oxidation cavity is opened in the middle of the reaction kettle. A water inlet pipe communicated with the oxidation cavity is fixedly connected to the top of the outer side wall of the reaction kettle. A drain pipe communicated with the oxidation cavity is fixedly connected to the bottom of the reaction kettle. A dissolved gas generator is connected to the outer side wall of the reaction kettle. The top of the dissolved gas generator is communicated with the oxidation cavity through a connecting pipe. One end of the connecting pipe far away from the dissolved gas generator is connected with a mixing component.
[0007] Further, the mixing component includes a connecting collar, a transfer pipe and a shunt pipe. The top of the transfer pipe is in contact with the bottom of the connecting pipe. A connecting collar for rotary sealing is sleeved at the junction of the transfer pipe and the connecting pipe. A plurality of shunt pipes are annularly arranged at the bottom of the transfer pipe. A round hole for discharging dissolved gas water is opened at the top of each shunt pipe.
[0008] Further, solenoid valves equal in number to the round holes are arranged in the shunt pipes and are correspondingly arranged in the round holes one by one.
[0009] Further, a plurality of raised spoiler plates are arranged in an annular array on the top of the inner side wall of the transfer pipe, and the spoiler plates are spirally arranged in the transfer pipe around the axis of the transfer pipe.
[0010] Further, the dissolved air generator is composed of a housing, a jet injector, an air inlet pipe, and a pressure pump. The housing is fixedly connected to the reaction kettle. A pressure chamber communicating with the connecting pipe is provided in the housing. A pressure pump for pressurizing the pressure chamber is arranged at the top of the housing. A jet injector communicating with the pressure chamber is fixedly connected to the outer side wall of the housing, and an air inlet pipe for injecting ozone is fixedly connected to the outer side wall of the jet injector.
[0011] Further, a pressure sensor is fixedly connected to the inner side wall of the pressure chamber, and a pressure gauge connected to the pressure sensor is fixedly connected to the outer side wall of the housing.
[0012] In summary, the present utility model includes at least one of the following beneficial technical effects:
[0013] 1. For the micro-nano ozone oxidation device for wastewater treatment, by providing the dissolved air generator, the dissolved air water containing ozone can be released into the wastewater, and the supersaturated gas in the dissolved air water can precipitate during the decompression process to generate micro-nano bubbles, so that ozone is stably mixed in the wastewater, thereby enabling ozone to efficiently mix with the organic matter in the wastewater and purify the wastewater. The provided mixing assembly can increase the discharge range of the dissolved air water, thereby improving the mixing efficiency of ozone and wastewater, eliminating the need for an additional stirring device, and making the micro-nano ozone oxidation device more practical;
[0014] 2. For the micro-nano ozone oxidation device for wastewater treatment, by providing spoiler plates in the transfer pipe of the mixing assembly, the spoiler plates can be pushed to deflect during the discharge process of the dissolved air water, so that the spoiler plates drive the transfer pipe to rotate, and the shunt pipe rotates to stir the wastewater, thereby further increasing the coverage area of the dissolved air water and enabling ozone to better mix with the wastewater, further enhancing the practicality of the micro-nano ozone oxidation device. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.
[0016] Figure 1 It is a schematic structural diagram of a micro-nano ozone oxidation device for wastewater treatment of the present utility model.
[0017] Figure 2 This is a schematic internal structure diagram of a micro-nano ozone oxidation device for wastewater treatment according to the present utility model.
[0018] Figure 3 This is a schematic structural diagram of a mixing assembly in a micro-nano ozone oxidation device for wastewater treatment according to the present utility model.
[0019] Figure 4 This is a schematic structural diagram of a spoiler in a micro-nano ozone oxidation device for wastewater treatment according to the present utility model.
[0020] Figure 5 This is a schematic structural diagram of a dissolved gas generator in a micro-nano ozone oxidation device for wastewater treatment according to the present utility model.
[0021] In the figure, 1, reaction kettle; 2, oxidation chamber; 3, water inlet pipe; 4, drain pipe; 5, dissolved gas generator; 51, housing; 52, ejector; 53, air inlet pipe; 54, pressure pump; 6, connecting pipe; 7, mixing assembly; 71, connecting collar; 72, transfer pipe; 73, shunt pipe; 8, round hole; 9, solenoid valve; 10, spoiler; 11, pressure chamber; 12, pressure sensor; 13, pressure gauge. Specific embodiments
[0022] The following further elaborates on the present utility model with reference to the accompanying drawings.
[0023] Example:
[0024] Refer to Figure 1 - Figure 5 As disclosed in the present utility model, a micro-nano ozone oxidation device for wastewater treatment includes a reaction kettle 1. An oxidation chamber 2 is provided in the middle of the reaction kettle 1. A water inlet pipe 3 communicating with the oxidation chamber 2 is fixedly connected to the top of the outer side wall of the reaction kettle 1. A drain pipe 4 communicating with the oxidation chamber 2 is fixedly connected to the bottom of the reaction kettle 1. A dissolved gas generator 5 is connected to the outer side wall of the reaction kettle 1. The top of the dissolved gas generator 5 is communicated with the oxidation chamber 2 through a connecting pipe 6. One end of the connecting pipe 6 away from the dissolved gas generator 5 is connected to a mixing assembly 7.
[0025] In this embodiment, since ozone is directly charged into the wastewater, the bubble size of the ozone bubbles is relatively large, resulting in poor mixing effect between ozone and wastewater and low mass transfer rate, which limits the apparent reaction rate of ozone oxidation.
[0026] Therefore, observe Figure 2It can be found that during the wastewater treatment process, the wastewater is first pumped into the reaction kettle 1 through the inlet pipe 3 by a water pump. Subsequently, the dissolved gas generator 5 is used to transport the dissolved gas water mixed with ozone to the oxidation chamber 2 through the connecting pipe 6, so that the dissolved gas water comes into contact and mixes with the wastewater. During the decompression process, the supersaturated gas precipitates to generate micro-nano bubbles, enabling ozone to be stably mixed in the wastewater, thereby enabling ozone to efficiently mix with the organic matter in the wastewater and purifying the wastewater.
[0027] After ozone precipitates in the wastewater, it will diffuse upward under the push of buoyancy, resulting in low lateral diffusion efficiency of ozone and affecting the overall treatment efficiency of the wastewater. Therefore, observe Figure 2 It can be found that the mixing component 7 provided at one end of the connecting pipe 6 away from the dissolved gas generator 5 can increase the discharge range of the dissolved gas water, effectively increase the coverage range of the dissolved gas water, and further improve the mixing efficiency of the wastewater and ozone, thereby enhancing the wastewater treatment efficiency.
[0028] In a further preferred embodiment of the present utility model, as Figure 2 shown, the mixing component 7 includes a connecting collar 71, a transfer pipe 72, and a shunt pipe 73. The top of the transfer pipe 72 is in contact with the bottom of the connecting pipe 6. A connecting collar 71 for rotational sealing is sleeved at the junction of the transfer pipe 72 and the connecting pipe 6. A plurality of shunt pipes 73 are arranged in an annular array at the bottom of the transfer pipe 72. A circular hole 8 for discharging the dissolved gas water is opened at the top of each shunt pipe 73.
[0029] In this embodiment, by providing a plurality of shunt pipes 73 at the bottom of the transfer pipe 72 and opening circular holes 8 for discharging the dissolved gas water at the tops of the shunt pipes 73, the discharge range of the dissolved gas water can be increased, thereby increasing the coverage range of ozone, effectively improving the mixing efficiency of ozone and wastewater, and enhancing the wastewater treatment efficiency.
[0030] Since the transfer pipe 72 and the connecting pipe 6 are not integrally formed, a splicing gap will be generated between the transfer pipe 72 and the connecting pipe 6, thereby affecting the sealing between the connecting pipe 6 and the transfer pipe 72, resulting in the leakage of the dissolved gas water through the gap and affecting the discharge of the dissolved gas water at the shunt pipe 73. Therefore, observe Figure 2 It can be found that a connecting collar 71 for rotational sealing is provided at the connection between the transfer pipe 72 and the connecting pipe 6 to achieve a sealing effect between the transfer pipe 72 and the connecting pipe 6, and the leakage of the dissolved gas water can be avoided, so as not to affect the discharge of the dissolved gas water at the shunt pipe 73.
[0031] In a further preferred embodiment of the present utility model, as Figure 3 shown, a solenoid valve 9 equal in number to the circular hole 8 is provided in the shunt pipe 73 and is correspondingly arranged in the circular hole 8.
[0032] In this embodiment, since industrial wastewater contains a large amount of organic substances that can trigger the generation of free radicals for ozone formation, the concentration of organic pollutants is high and the reaction rate is fast at the initial stage of the reaction. As the reaction progresses, the concentration of the remaining refractory organic substances in the water becomes lower and lower, and the reaction rate slows down. At this time, continuously increasing the ozone cannot improve the reaction speed. Therefore, a solenoid valve 9 is provided in the shunt pipe 73, and the solenoid valve 9 is used to block the round hole 8, which can be used to control the discharge of the dissolved air water, avoid excessive discharge of the dissolved air water and cause waste, effectively reduce the use cost of the micro-nano ozone oxidation device, and improve the practicability of the micro-nano ozone oxidation device.
[0033] In a further preferred embodiment of the present utility model, as Figure 3 and Figure 4 shown, a plurality of raised spoiler plates 10 are annularly arranged at the top of the inner side wall of the transfer pipe 72, and the spoiler plates 10 are spirally arranged in the transfer pipe 72 around the axis of the transfer pipe 72.
[0034] In this embodiment, since ozone needs to be dissolved in the liquid under pressure to form dissolved air water, the pressure in the dissolved air generator 5 is greater than the external air pressure. Therefore, when the round hole 8 is opened, the dissolved air water will enter the connecting pipe 6 under the action of pressure and then be discharged through the transfer pipe 72 and the shunt pipe 73.
[0035] By providing the spoiler plates 10 in the transfer pipe 72 and the spoiler plates are spirally arranged on the inner side wall of the transfer pipe 72 as Figure 4 shown, when the high-pressure dissolved air water passes through the transfer pipe 72, it will first contact the spoiler plates 10. Subsequently, the dissolved air water blocked by the spoiler plates 10 will flow along the inclined surface of the spoiler plates 10 under the push of pressure, and apply a lateral force to the spoiler plates 10 when flowing, causing the spoiler plates 10 to shift under the action of the lateral force, thereby driving the transfer pipe 72 to rotate, enabling the transfer pipe 72 to drive the shunt pipe 73 to rotate, stirring the wastewater while rotating and discharging the dissolved air water through the shunt pipe 73, which can further increase the coverage range of ozone, and at the same time further improve the mixing efficiency of the wastewater and ozone, so as to make the treatment efficiency of the wastewater higher.
[0036] In a further preferred embodiment of the present utility model, as Figure 5 shown, the dissolved air generator 5 is composed of a housing 51, a jet injector 52, an air inlet pipe 53 and a pressure pump 54. Among them, the housing 51 is fixedly connected to the reaction kettle 1, a pressure chamber 11 communicating with the connecting pipe 6 is opened in the housing 51, a pressure pump 54 for pressurizing the pressure chamber 11 is arranged at the top of the housing 51, a jet injector 52 communicating with the pressure chamber 11 is fixedly connected to the outer side wall of the housing 51, and an air inlet pipe 53 for injecting ozone is fixedly connected to the outer side wall of the jet injector 52.
[0037] In this embodiment, the provided housing 51 and pressure chamber 11 can be used to store dissolved air water. The pressure pump 54 provided at the top of the housing 51 can be used to pressurize the pressure chamber 11, so that the water and ozone entering the pressure chamber 11 through the ejector 52 and the air inlet pipe 53 are mixed together to form dissolved air water, and are discharged through the connecting pipe 6 under the action of pressure.
[0038] And observing Figure 5 It can be found that the connecting pipe 6 extends into the pressure chamber 11 and is close to the inner bottom wall of the pressure chamber 11, which can enable the dissolved air water to be better discharged through the connecting pipe 6, making the utilization rate of the dissolved air water higher.
[0039] In a further preferred embodiment of the present utility model, as Figure 1 and Figure 5 shown, a pressure sensor 12 is fixedly connected to the inner side wall of the pressure chamber 11, and a pressure gauge 13 connected to the pressure sensor 12 is fixedly connected to the outer side wall of the housing 51.
[0040] In this embodiment, during the release process of the dissolved air water, the pressure in the pressure chamber 11 will gradually decrease, resulting in the precipitation of ozone in the dissolved air water and affecting the ozone content of the dissolved air water.
[0041] Therefore, observing Figure 5 It can be found that by providing a pressure sensor 12 in the pressure chamber 11, it can be used to monitor the pressure in the pressure chamber 11, and when the pressure in the pressure chamber 11 decreases, the pressure pump 54 is controlled to pressurize, so as to ensure that the pressure in the pressure chamber 11 prevents ozone from precipitating, thereby ensuring the ozone content in the dissolved air water.
[0042] And observing Figure 1 It can be found that a pressure gauge 13 connected to the pressure sensor 12 is provided on the outer side wall of the housing 51, which can be used to observe the pressure in the pressure chamber 11 in real time, making the use of the dissolved air generator 5 simpler.
[0043] The embodiments of this specific implementation manner are all preferred embodiments of the present utility model, and do not limit the protection scope of the present utility model accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of the present utility model should be covered within the protection scope of the present utility model.
Claims
1. A micro-nano ozone oxidation device for wastewater treatment, comprising a reactor (1), an oxidation chamber (2) is provided in the middle of the reactor (1), a water inlet pipe (3) connected to the oxidation chamber (2) is fixedly connected to the top of the outer wall of the reactor (1), and a drainage pipe (4) connected to the oxidation chamber (2) is fixedly connected to the bottom of the reactor (1), characterized in that: The outer wall of the reactor (1) is connected to a dissolved gas generator (5), the top of the dissolved gas generator (5) is connected to the oxidation chamber (2) via a connecting pipe (6), and the end of the connecting pipe (6) away from the dissolved gas generator (5) is connected to a mixing assembly (7).
2. The micro-nano ozone oxidation device for wastewater treatment according to claim 1, characterized in that: The mixing assembly (7) comprises a connecting collar (71), a transfer pipe (72) and a diverter pipe (73); the top of the transfer pipe (72) contacts the bottom of the connecting pipe (6); a connecting collar (71) for rotary sealing is sleeved at the junction of the transfer pipe (72) and the connecting pipe (6); a plurality of diverter pipes (73) are arranged in an annular array at the bottom of the transfer pipe (72); and a circular hole (8) for discharging dissolved gas water is opened at the top of each diverter pipe (73).
3. The micro-nano ozone oxidation device for wastewater treatment according to claim 2, characterized in that: The diverter pipe (73) is provided with solenoid valves (9) in the same number as the circular holes (8), and are arranged in a one-to-one correspondence in the circular holes (8).
4. The micro-nano ozone oxidation device for wastewater treatment according to claim 2, characterized in that: A plurality of spoilers (10) formed by projections are arranged in an annular array on the top of the inner side wall of the transfer tube (72). The spoilers (10) are arranged in a spiral shape in the transfer tube (72) with the axis of the transfer tube (72).
5. The micro-nano ozone oxidation device for wastewater treatment according to claim 1, characterized in that: The dissolved gas generator (5) is composed of a shell (51), an ejector (52), an air inlet pipe (53) and a pressure pump (54), wherein the shell (51) is fixedly connected to the reactor (1), a pressure chamber (11) connected to the connecting pipe (6) is provided in the shell (51), a pressure pump (54) for pressurizing the pressure chamber (11) is arranged on the top of the shell (51), an ejector (52) is fixedly connected to the outer wall of the shell (51) and the ejector (52) is connected to the pressure chamber (11), and an air inlet pipe (53) for injecting ozone is fixedly connected to the outer wall of the ejector (52).
6. The micro-nano ozone oxidation device for wastewater treatment according to claim 5, characterized in that: A pressure sensor (12) is fixedly connected to the inner wall of the pressure chamber (11), and a pressure gauge (13) connected to the pressure sensor (12) is fixedly connected to the outer wall of the housing (51).