Air stirring device
By using horizontally inclined aeration branch pipes and mechanical stirring components in the sewage treatment system, the problems of excessive dissolved oxygen and dead zones in stirring were solved, achieving more efficient sewage stirring and treatment results.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HEBI ZHONGHAO NEW MATERIAL TECH CO LTD
- Filing Date
- 2025-05-26
- Publication Date
- 2026-05-12
AI Technical Summary
Existing technologies for wastewater treatment suffer from problems such as excessive dissolved oxygen and unsatisfactory mixing effects, especially in anoxic tanks where sludge accumulation leads to dead zones in mixing and sludge aging, which affects the wastewater treatment effect.
An air mixing device is used, which forms a circulating mixing through horizontally inclined aeration branch pipes and mechanical mixing components. Combined with a dissolved oxygen detector, the aeration rate is adjusted in real time to ensure that the dissolved oxygen is within the normal range and to enhance the disturbance ability of the sludge at the bottom of the biological treatment tank.
It achieves a more uniform sewage mixing effect, avoids excessive dissolved oxygen, improves sewage treatment efficiency, and ensures that sewage is discharged in compliance with standards.
Smart Images
Figure CN224226805U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of wastewater treatment technology, and in particular to an air mixing device. Background Technology
[0002] Currently, in domestic integrated wastewater treatment equipment, the biological treatment section is mainly divided into anaerobic, anoxic, and aerobic tanks. To ensure more uniform water quality and prevent sludge from settling at the bottom of the tanks, which would affect treatment efficiency, all tanks require agitation. During normal operation of the anoxic tank, due to its long length and the presence of elastic packing material, the agitator cannot fully stir the wastewater, leading to sludge accumulation. Prolonged accumulation causes sludge aging and disintegration, resulting in abnormal fluctuations in wastewater treatment data and affecting compliance with discharge standards. In wastewater treatment, a gas agitator is typically used to stir the water in the anoxic tank. This is achieved by introducing air into the water through a gas agitation pipeline. The working principle is as follows: Because the liquid pressure at the bottom of the tank is greater than the pressure at the top, when air is introduced, the gas moves upwards from the bottom. During this upward movement, the gas bubbles continuously increase in size or burst, driving the water flow and thus agitating the wastewater within the tank.
[0003] The prior art patent CN218089109U discloses an integrated aeration and stirring device. The device includes: a biological treatment tank for holding wastewater; an aeration mechanism for aerating the wastewater in the biological treatment tank, the aeration mechanism including an aeration pipe and an aeration head, the aeration head being disposed on the aeration pipe and located within the biological treatment tank; a stirring mechanism for stirring the wastewater in the biological treatment tank, the stirring mechanism including a stirring air pipe, a guide pipe, and a pressure plate; the guide pipe and the pressure plate are located within the biological treatment tank, the top of the guide pipe communicating with the stirring air pipe, and the bottom of the guide pipe communicating with the pressure plate; and a blower for supplying air to the aeration mechanism and the stirring mechanism, the aeration pipe and the stirring air pipe both being connected to the air outlet of the blower.
[0004] The above-mentioned device uses a gas stirring mechanism for stirring. Since air needs to be introduced into the biological treatment tank, although it can save energy and reduce costs, it is very easy to cause the dissolved oxygen in the anoxic tank to exceed the standard. Moreover, since the bubbles rise vertically, the stirring zone is only formed in the vertical direction. Its stirring direction is singular, which can easily create a stirring dead zone, resulting in insufficient mixing between sludge and water, thus leading to unsatisfactory treatment effect when treating sewage. Utility Model Content
[0005] This invention proposes an air stirring device that solves the problems of excessive dissolved oxygen and unsatisfactory stirring effect in the prior art.
[0006] The technical solution of this utility model is implemented as follows:
[0007] An air mixing device includes a biological treatment tank and an aeration assembly. The aeration assembly includes a main aeration pipe and branch aeration pipes. The main aeration pipe extends out of the biological treatment tank and connects to a blower. One end of the branch aeration pipe is connected to the main aeration pipe, and the other end of the branch aeration pipe is provided with an aeration port. The outlet direction of the aeration port is arranged horizontally and inclined relative to the side wall of the biological treatment tank. A mechanical mixing assembly is provided inside the biological treatment tank. When the blower introduces air into the biological treatment tank through the horizontally inclined branch aeration pipes, the gas drives the liquid in the biological treatment tank to flow horizontally, thereby forming a circulation, giving the aeration assembly a good mixing function. At the same time, the mechanical mixing assembly is provided inside the biological treatment tank to enhance the disturbance ability of the sludge at the bottom of the biological treatment tank and improve the mixing effect.
[0008] The aeration main pipe is equipped with a main pipe regulating valve. The main pipe regulating valve is a proportional regulating valve, which can control the gas flow rate through the aeration main pipe, thereby adjusting the dissolved oxygen content in the biological treatment tank.
[0009] The aeration branch pipe is equipped with a branch pipe regulating valve. The branch pipe regulating valve is a manual regulating valve, which allows the operator to adjust the opening degree of the aeration branch pipe, facilitating the adjustment of the dissolved oxygen content in the biological treatment tank.
[0010] At least one aeration branch pipe is provided on each side of the main aeration pipe. Multiple aeration branch pipes together introduce air into the biological treatment tank, improving the aeration efficiency of the biological treatment tank; at the same time, the even distribution of multiple aeration branch pipes in the biological treatment tank can stir the sludge in various locations in the biological treatment tank, improving the stirring effect.
[0011] The aeration branch pipes on both sides of the aeration main pipe are inclined in the same direction. Specifically, the aeration branch pipes on both sides of the aeration main pipe are inclined forward of the aeration main pipe.
[0012] The aeration branch pipes on both sides of the aeration main pipe are inclined in opposite directions. Specifically, the aeration branch pipe on one side of the aeration main pipe is inclined forward towards the aeration main pipe, while the aeration branch pipe on the other side of the aeration main pipe is inclined backward towards the aeration main pipe.
[0013] The angle between the aeration branch pipe and the aeration main pipe is 10°~80°.
[0014] The aeration branch pipe has a Z-shaped structure, with the lower part of the Z-shaped structure extending into the bottom of the biological treatment tank. The upper part of the Z-shaped structure extends upwards above the liquid surface in the biological treatment tank, facilitating the connection and installation of the aeration branch pipe and the main aeration pipe, and also facilitating the maintenance of the connection point between the aeration branch pipe and the main aeration pipe.
[0015] The mechanical mixing component is a submersible mixer, which is located in a corner of the biochemical tank.
[0016] The biochemical tank is equipped with a detection probe, and a dissolved oxygen detector is installed outside the tank. The detection probe is connected to the dissolved oxygen detector. The dissolved oxygen detector monitors the dissolved oxygen content of the liquid in the biochemical tank in real time, and adjusts the main blower and pipe regulating valves according to the monitored dissolved oxygen content to ensure that the dissolved oxygen in the biochemical tank is within the normal range.
[0017] The beneficial effects of this invention are as follows: when the blower introduces air into the biological treatment tank through the aeration branch pipe, the air drives the liquid in the biological treatment tank to flow horizontally, thereby forming a circulation, which gives the aeration components a better stirring function. At the same time, the mechanical stirring components installed in the biological treatment tank enhance the ability to disturb the sludge at the bottom of the biological treatment tank and improve the stirring effect.
[0018] A dissolved oxygen monitor is installed to monitor the dissolved oxygen in the liquid in the biological treatment tank in real time. The main blower and pipe regulating valve are adjusted according to the monitored dissolved oxygen content to ensure that the dissolved oxygen in the biological treatment tank is within the normal range. Attached Figure Description
[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0020] Figure 1 This is a top view schematic diagram of an air mixing device according to the present invention;
[0021] Figure 2 A schematic diagram showing the arrangement of the main aeration pipes and branch aeration pipes;
[0022] Figure 3 This is a top view of the air mixing device in Example 2.
[0023] In the diagram: 1. Dissolved oxygen detector, 2. Biochemical tank, 3. Detection electrode, 4. Aeration main pipe, 41. Aeration branch pipe, 5. Submersible mixer, 6. Main pipe regulating valve, 7. Blower, 8. Branch pipe regulating valve. Detailed Implementation
[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0025] Example 1, such as Figure 1 As shown, an air mixing device includes a biological tank 2 and an aeration assembly. The aeration assembly includes an aeration main pipe 4 and an aeration branch pipe 41. The aeration main pipe 4 extends out of the biological tank 2 and is connected to a blower 7. One end of the aeration branch pipe 41 is connected to the aeration main pipe 4, and the other end of the aeration branch pipe 41 is provided with an aeration port. The outlet direction of the aeration port is arranged horizontally and inclined relative to the side wall of the biological tank 2. A mechanical mixing assembly is provided inside the biological tank 2. Specifically, the biological treatment tank 2 is a rectangular tank, and the aeration main pipe 4 is arranged in the middle of the biological treatment tank 2 along its length. The blower 7 is an air suspension blower. When the blower 7 is started, air can be introduced into the aeration branch pipe 41 through the aeration main pipe 4, and then into the biological treatment tank 2 through the aeration port on the aeration branch pipe 41, thereby realizing the aeration treatment of the liquid in the biological treatment tank 2. In addition, when the air is discharged from the aeration port, the air drives the liquid to flow horizontally, thereby forming a circulation, which gives the aeration components a good stirring function. At the same time, a mechanical stirring component is set in the biological treatment tank 2. The aeration components and the mechanical stirring components work together to stir the sludge, enhance the disturbance ability of the sludge at the bottom of the biological treatment tank 2, and improve the stirring effect.
[0026] Furthermore, the aeration main pipe 4 is equipped with a main pipe regulating valve 6. In this embodiment, the main pipe regulating valve 6 is a proportional regulating valve, which can control the gas flow rate through the aeration main pipe 4, thereby adjusting the dissolved oxygen in the biological treatment tank 2.
[0027] Furthermore, a branch pipe regulating valve 8 is provided on the aeration branch pipe 41. In this embodiment, the branch pipe regulating valve 8 is a manual regulating valve, which allows the operator to adjust the opening degree of the aeration branch pipe 41, facilitating the adjustment of dissolved oxygen in the biological treatment tank 2.
[0028] Furthermore, at least one aeration branch pipe 41 is provided on each side of the aeration main pipe 4. In this embodiment, six aeration branch pipes 41 are provided on each side of the aeration main pipe 4. The six aeration branch pipes 41 are evenly distributed, so that the aeration components can simultaneously introduce air into various positions in the biological treatment tank 2, which facilitates rapid adjustment of dissolved oxygen. At the same time, the even distribution of aeration branch pipes 41 in the biological treatment tank 2 can stir the sludge in various positions in the biological treatment tank 2, thereby improving the stirring effect.
[0029] Furthermore, the aeration branch pipes 41 on both sides of the main aeration pipe 4 are inclined in opposite directions. Specifically, as shown below... Figure 2 As shown, the aeration branch pipes 41 on both sides of the aeration main pipe 4 are tilted towards the front of the aeration main pipe 4. When the device is working, the aeration branch pipes 41 on both sides of the aeration main pipe 4 are opened alternately to change the flow direction of the circulating flow during aeration and improve the stirring effect.
[0030] Furthermore, the angle between the aeration branch pipe 41 and the aeration main pipe 4 is 10°~80°. In this embodiment, the inclination angle of the aeration branch pipe 41 is 45°, and the aeration branch pipes 41 are arranged in parallel.
[0031] Furthermore, such as Figure 3 As shown, the aeration branch pipe 41 has a Z-shaped structure, with the lower part of the Z-shaped structure extending into the bottom of the biological treatment tank 2. The upper part of the Z-shaped structure extends upwards beyond the liquid surface in the biological treatment tank 2, facilitating the connection and installation of the aeration branch pipe 41 and the aeration main pipe 4, and also facilitating the maintenance of the connection position between the aeration branch pipe 41 and the aeration main pipe 4. In addition, the branch pipe regulating valve 8 is installed at the connection position between the aeration main pipe 4 and the aeration branch pipe 41.
[0032] Example 2 differs from Example 1 in that an air mixing device is provided, wherein the aeration branch pipes 41 on both sides of the aeration main pipe 4 are inclined in the same direction. In this example, the aeration branch pipe 41 on one side of the aeration main pipe 4 is inclined forward of the aeration main pipe 4, and the aeration branch pipe 41 on the other side of the aeration main pipe 4 is inclined backward of the aeration main pipe 4; when the device is working, the aeration branch pipes 41 on both sides of the aeration main pipe 4 are opened simultaneously, increasing the flow rate of the circulating air during aeration and improving the mixing effect.
[0033] Example 3, based on Example 1, provides an air mixing device, wherein the mechanical mixing component is a submersible mixer 5, which is installed in a corner of the biological treatment tank 2. Since the biological treatment tank 2 is rectangular, when the aeration components aerate the liquid in the tank, creating a circulating flow, the circulating flow cannot effectively mix the corners of the rectangular tank. The submersible mixer 5 mixes the sludge in the corners of the biological treatment tank 2, eliminating dead zones and improving the mixing effect.
[0034] Furthermore, a detection probe 3 is installed inside the biological treatment tank 2, and a dissolved oxygen detector 1 is installed outside the biological treatment tank 2. The detection probe 3 is connected to the dissolved oxygen detector 1. The dissolved oxygen detector 1 monitors the dissolved oxygen in the biological treatment tank 2 in real time through the detection probe 3. Based on the monitored dissolved oxygen, the staff can adjust the blower 7 and the main regulating valve 6, and adjust the air flow of the aeration main pipe 4, thereby adjusting the dissolved oxygen in the biological treatment tank 2 to keep it within the normal range.
[0035] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. An air mixing device, comprising a biological tank (2) and an aeration assembly, characterized in that, The aeration assembly includes an aeration main pipe (4) and an aeration branch pipe (41). The aeration main pipe (4) extends out of the biological tank (2) and is connected to the blower (7). One end of the aeration branch pipe (41) is connected to the aeration main pipe (4), and the other end of the aeration branch pipe (41) is provided with an aeration port. The outlet direction of the aeration port is horizontally inclined relative to the side wall of the biological tank (2). A mechanical stirring assembly is provided inside the biological tank (2).
2. The air mixing device according to claim 1, characterized in that, The aeration main pipe (4) is equipped with a main pipe regulating valve (6).
3. The air mixing device according to claim 1, characterized in that, A branch pipe regulating valve (8) is provided on the aeration branch pipe (41).
4. The air mixing device according to any one of claims 1 to 3, characterized in that, At least one aeration branch pipe (41) is provided on each side of the aeration main pipe (4).
5. The air mixing device according to claim 4, characterized in that, The aeration main pipe (4) has the same inclination direction on both sides of the aeration branch pipe (41).
6. The air stirring device according to claim 4, characterized in that, The aeration main pipe (4) has two aeration branch pipes (41) on both sides in opposite directions.
7. The air mixing device according to any one of claims 1, 5, and 6, characterized in that, The angle between the aeration branch pipe (41) and the aeration main pipe (4) is 10°~80°.
8. The air stirring device according to claim 7, characterized in that, The aeration branch pipe (41) has a Z-shaped structure, and the lower part of the Z-shaped structure extends into the bottom of the biological tank (2).
9. The air mixing device according to claim 1 or 8, characterized in that, The mechanical mixing component is a submersible mixer (5), which is located in the corner of the biochemical tank (2).
10. The air stirring device according to claim 9, characterized in that, The biochemical tank (2) is equipped with a detection probe (3) and a dissolved oxygen detector (1) is installed outside the biochemical tank (2). The detection probe (3) is connected to the dissolved oxygen detector (1).