An on-line monitoring linkage control aeration device

Abstract

The utility model discloses an online monitoring linkage control's aeration device, including aeration tank, aeration mechanism, online monitoring subassembly and central controller, and aeration tank is equipped with water inlet and overflow, and aeration mechanism includes air blowing device and aeration pipe group, and aeration pipe group includes gas pipe and transverse branch pipe, and transverse branch pipe is connected with annular pipe through standpipe, and a plurality of aeration heads with big aeration hole are equidistantly arranged on annular pipe, and the micro -pore net layer is equipped above aeration head, online monitoring subassembly includes the DO sensor of uniform distribution in aeration tank, and ammonia nitrogen sensor is separately arranged at water inlet, overflow, and central controller signal connection online monitoring subassembly and air blowing device. The utility model discloses a real -time acquisition water quality parameter through being equipped with online monitoring subassembly, and the air blowing device is dynamically matched optimal aeration amount in combination with central controller linkage control, and through the aeration head of ring and the micro -pore net layer above it, increase gas -liquid mixing length and mixing effect, and the whole has intelligent adjustment and the characteristics of high efficiency, energy -conserving.

Description

Technical Field

[0001] This utility model belongs to the field of wastewater treatment technology, and specifically relates to an aeration device with online monitoring and linkage control. Background Technology

[0002] Aerobic treatment is one of the most important steps in wastewater treatment. During treatment, air is forcibly introduced into the wastewater through aeration devices, allowing the wastewater to come into contact with the air and become oxygenated. The liquid is also agitated by airflow, accelerating the transfer of oxygen from the air into the liquid, preventing suspended matter from settling, and enhancing the contact between organic matter, microorganisms, and dissolved oxygen. This process oxidizes and decomposes the organic matter in the wastewater, achieving the goal of water purification. The dissolved oxygen content in the water directly affects the effectiveness of wastewater treatment. If the dissolved oxygen content is too low, the decomposition of organic matter will be incomplete, while if the dissolved oxygen content is too high, it may lead to excessive energy consumption, which is not conducive to the control of treatment costs. The aeration rate is a factor affecting the dissolved oxygen content.

[0003] Existing wastewater aeration treatment devices mainly utilize blowers and aeration units installed at the bottom of the wastewater tank. The blowers connect to several aeration heads, each equipped with aeration holes. To ensure sufficient contact between organic matter, microorganisms, and dissolved oxygen, the number of aeration heads is typically set based on the maximum wastewater treatment capacity. During operation, the blower's output airflow is manually adjusted based on periodic manual sampling and DO (dissolved oxygen) value testing to conserve energy. However, due to the significant uncertainty in the timing of industrial wastewater discharge and the organic matter content within the wastewater, the input water quality fluctuates frequently. Relying on manual sampling and testing, and solely controlling aeration volume based on DO value, makes it difficult to respond promptly to changes in water quality, often resulting in insufficient or excessive aeration. This makes it difficult to balance wastewater treatment quality and energy consumption. In addition, the design of aeration holes also has the problem of being difficult to adapt to changes in water quality. Aeration holes with larger diameters can effectively adapt to scenarios with high organic matter content and are less prone to clogging. However, if the bubbles injected into the water are too large, they will rise too quickly, which will prevent oxygen from fully contacting the sewage and result in low oxygen transfer efficiency, thus leading to low sewage treatment efficiency. On the other hand, aeration holes with smaller diameters can effectively increase the contact area between the bubbles and the sewage and increase oxygen transfer efficiency. However, they are prone to clogging by impurities, which will lead to excessive energy consumption of the blower and reduced sewage treatment efficiency. Utility Model Content

[0004] The purpose of this invention is to propose an online monitoring and linkage control aeration device to solve the problems of existing aeration devices that rely solely on manual sampling to detect DO values, which cannot respond in a timely manner to changes in input water quality and wastewater treatment results to adjust the aeration volume in real time, resulting in insufficient or excessive aeration, and the inability of the aeration hole diameter setting to effectively balance oxygen transfer efficiency, resulting in excessive energy of the blower and poor wastewater treatment effect.

[0005] This utility model is achieved through the following technical solution:

[0006] This utility model proposes an online monitoring and linkage control aeration device, including an aeration tank, an aeration mechanism, an online monitoring component, and a central controller. The aeration tank is provided with an inlet and an overflow outlet. The aeration mechanism includes a blower and an aeration pipe assembly. The online monitoring component includes a DO sensor and an ammonia nitrogen sensor. Multiple DO sensors are evenly distributed on the upper part of the aeration tank, and at least two ammonia nitrogen sensors are provided, respectively located at the inlet and the overflow outlet. The input terminal of the central controller is connected to the online monitoring component, and the output terminal is connected to the blower. The central controller is used for... The output air volume of the blower is adjusted according to the monitoring results of the online monitoring component; the aeration pipe group includes an air supply pipe and several horizontal branch pipes connected to it, the horizontal branch pipes are connected to several vertical pipes, the top of the vertical pipes are connected to an annular pipe, multiple aeration heads are evenly distributed on the annular pipe, the aeration heads are evenly distributed with several large-diameter aeration holes, a microporous mesh layer is provided above the aeration heads, the microporous mesh layer is connected to the annular pipe through a support frame, the unfolded surface of the microporous mesh layer covers the aeration range of all the aeration heads arranged on the annular pipe, and the pore size of the microporous mesh layer is equal to or slightly smaller than the pore size of the aeration holes.

[0007] Based on the above technical solutions, the dissolved oxygen content and organic matter content of the input and output water bodies are acquired in real time through DO sensors and ammonia nitrogen sensors, respectively. The central processing unit analyzes the water quality status, obtains the required aeration volume and actual oxygen transfer efficiency of the input water body, and then dynamically adjusts the output air volume of the blower to achieve the optimal aeration quality. At the same time, the setting of a ring-shaped aeration head and microporous mesh layer increases the aeration range and maintains the bubbles in the water body at an appropriate size, thereby extending the bubble floating time and allowing sufficient time for oxygen in the bubbles to dissolve into the water body, improving oxygen transfer efficiency, and thus achieving more accurate DO detection and input air volume adjustment.

[0008] Furthermore, a flow control valve is provided at the connection between the transverse branch pipe and the air supply pipe. The flow control valve is connected to the central controller. The flow control valve adjusts its opening according to the monitoring results of the DO sensor adjacent to the transverse branch pipe. This design facilitates zoned control of aeration volume from the inlet to the overflow outlet according to oxygen demand and oxygen transfer efficiency, thereby achieving the best aeration treatment quality.

[0009] Furthermore, the aeration tank is divided into multiple aeration zones, which are separated by baffles. Each aeration zone is equipped with one aeration pipe group, and each aeration pipe group is individually connected to a blower. Each aeration zone is equipped with at least one DO sensor. The blower adjusts its output air volume according to the monitoring results of the DO sensor in its respective aeration zone. This design facilitates the differentiation of different aeration zones, targeted adjustment of aeration volume, and interception of some of the already generated flocs, reducing the oxygen demand of the next zone. This ensures good wastewater treatment effect while reducing the energy consumption of the blower, making it more energy-efficient and environmentally friendly.

[0010] Furthermore, the blower includes a frequency converter and multiple sets of fans connected in parallel. The blower adjusts the fan power and the number of fans on and off in real time according to the monitoring results of the online monitoring component. This design facilitates stepless adjustment of the output air volume and can better respond to changes in the detection values ​​obtained by the online monitoring component, thereby further reducing energy consumption.

[0011] Furthermore, the vertical pipe is rotatably connected to the horizontal branch pipe via a rotating sleeve. The horizontal branch pipe has jet holes on both sides of the vertical pipe. The annular pipe has a spiral blade below the jet hole, which is fixed to the vertical pipe. This design allows the vertical pipe and its mounted components to rotate actively using a blower device through the cooperation of the jet hole and the spiral blade. This not only creates circumferential disturbance in the water, expands the bubble diffusion diameter, and improves the aeration effect, but also simplifies the number of connecting components in the water body, eliminating the need for an additional drive device and reducing investment and maintenance costs.

[0012] More preferably, the bottom of the helical blade is provided with a guide channel spiraling outward along the rotation direction, and the partition side of the guide channel is conical. This design is conducive to generating rotational centrifugal force through the guide channel, and to guiding the airflow and weakening the impact force of the jet airflow on the helical blade through the conical partition side.

[0013] Furthermore, the support frame is provided with several circumferentially spirally arranged cutting blades, the outer edges of which are sharpened to form cutting edges. This design, through the setting of the cutting blades, can guide more air bubbles above the aeration head to the microporous mesh layer for cutting and refining, and can also cut foreign objects in the water during rotation, reducing the probability of the aeration head being blocked and achieving the purpose of protection.

[0014] Furthermore, a barbed wire layer is provided above the microporous mesh layer. The barbed wire layer is composed of rods or ropes with evenly distributed barbed needles arranged in a crisscross pattern. The barbed wire layer is connected to the support frame, and the unfolded surface of the barbed wire layer covers the microporous mesh layer. This design allows the barbed wire layer to puncture the bubbles that continue to rise and grow larger through the microporous mesh layer before they reach the water, so that the residual oxygen in the bubbles can be directly mixed into the water, further improving the oxygen transfer effect and preventing the bubbles generated by aeration from directly carrying oxygen out of the water.

[0015] Furthermore, several defoaming rods are provided near the overflow outlet of the aeration tank at the liquid surface. Each defoaming rod includes a main rod and defoaming needles evenly distributed on the main rod. The defoaming rods are arranged perpendicular to the water flow direction and span the entire aeration tank. Both ends of the defoaming rods are rotatably connected to the aeration tank. This design utilizes the defoaming rods to puncture the foam layer accumulated on the water surface, preventing the foam from carrying organic matter or isolating the water and air, thus affecting the oxygen transfer efficiency and sewage treatment effect, and even causing misjudgment by the ammonia nitrogen sensor at the overflow outlet.

[0016] Furthermore, a baffle is provided near the end of the defoaming needle. The baffle is arranged parallel to the defoaming rod, and the baffle uses the water flow impact to generate the rotational power of the defoaming rod.

[0017] Beneficial effects

[0018] One of the above technical solutions has the following advantages or beneficial effects:

[0019] (1) To address the problems of existing aeration treatment devices relying on manual sampling of DO values ​​to adjust the power of the blower, resulting in the aeration volume not effectively matching the wastewater treatment needs, as well as the low oxygen transfer efficiency of the water body and the difficulty in improving the treatment effect, an online monitoring component consisting of DO and ammonia nitrogen sensors is installed to obtain water quality parameters in real time. A central controller is installed to dynamically adjust the output air volume of the blower according to the real-time water quality, thereby dynamically adjusting the aeration volume of the aeration mechanism. By installing multiple sets of aeration heads distributed in a ring and a microporous mesh layer covering the aeration heads, the aeration range is increased and appropriate bubble size is maintained, improving the degree of gas-liquid mixing and mixing time, and improving oxygen transfer efficiency. The whole device has the characteristics of intelligent dynamic matching of the water quality to be treated, high efficiency, energy saving and good treatment effect.

[0020] (2) In order to solve the problem that the output value of the same control blower in the existing aeration treatment device cannot adapt to the different oxygen demand in different areas of the aeration tank, the aeration mechanism with different aeration zones and linkage DO sensor is set up, or the flow control valve with linkage DO sensor is set at the connection of the horizontal branch and vertical pipe of the integrated aeration pipe group. This achieves the purpose of targeted control and adjustment of aeration value based on online monitoring value, and effectively improves the sewage treatment effect.

[0021] (3) By combining jet holes and spiral blades in the aeration mechanism, the blower can simultaneously achieve aeration and provide power for the active rotation of the vertical pipe and its mounted components. This can not only create circumferential disturbance in the water, expand the bubble diffusion diameter, increase the mixing degree of bubbles and water, and improve the aeration effect, but also simplify the number of connecting components in the water, eliminating the need for additional drive devices, which helps to reduce investment and maintenance costs and further reduce the overall energy consumption of the aeration device.

[0022] (4) By setting a barbed wire layer above the microporous mesh layer, the bubbles that have been refined by the microporous mesh layer and then floated up and became larger are punctured before reaching the water, so that the residual oxygen in the bubbles can be directly mixed into the water body, and the bubbles generated by aeration can be prevented from directly carrying oxygen out of the water surface, thereby further improving the oxygen transfer effect and aeration effect. Attached Figure Description

[0023] Other features, objects, and advantages of the present invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings, which are provided for ease of understanding only and do not constitute a limitation on the technical solutions.

[0024] Figure 1 This is a schematic diagram of the overall structure of Embodiment 1 of the present utility model;

[0025] Figure 2 This is a partially enlarged structural diagram of Embodiment 1 of the present invention;

[0026] Figure 3 This is a schematic diagram of the defoaming rod structure according to Embodiment 1 of this utility model;

[0027] Figure 4 This is a schematic diagram of the structure of Embodiment 2 of the present invention;

[0028] Figure 5 This is a schematic diagram of the aeration tube assembly structure according to Embodiment 3 of this utility model;

[0029] In the diagram: Aeration tank 1; Inlet 101; Aeration zone 102; Baffle wall 103; Overflow outlet 104; Aeration mechanism 2; Blower 21; Variable frequency controller 211; Fan 212; Aeration pipe assembly 22; Air supply pipe 221; Horizontal branch pipe 222; Vertical pipe 223; Annular pipe 224; Jet hole 225; Spiral blade 23; Guide channel 231; Separating edge 232; Aeration head 24; Aeration hole 241; Support frame 25; Cutting disc 26; Cutting edge 261; Microporous mesh layer 27; Barbed wire layer 28; Online monitoring component 3; DO sensor 31; Ammonia nitrogen sensor 32; Flow control valve 4; Defoaming rod 5; Main rod 51; Defoaming needle 52; Baffle 53; Rotating sleeve 6; Outer cylinder 61; Inner cylinder 62. Detailed Implementation

[0030] The present invention will be further described in detail below with reference to the embodiments, but the implementation of the present invention is not limited thereto.

[0031] Example 1

[0032] like Figures 1-3As shown in the figure, this embodiment provides an aeration device with online monitoring and linkage control, including an aeration tank 1, an aeration mechanism 2, an online monitoring component 3 and a central controller (not shown in the figure). The aeration tank 1 is provided with an inlet 101 for inputting water to be treated and an overflow outlet 104 for outputting treated water.

[0033] The aeration mechanism 2 includes a blower 21 and an aeration pipe assembly 22, such as Figure 2 As shown, the aeration pipe assembly 22 includes an air supply pipe 221 and several horizontal branch pipes 222 connected to it. The ends of the horizontal branch pipes 222 may not be connected or may be interconnected. Several vertical pipes 223 are connected to the horizontal branch pipes 222. The vertical pipes 223 are evenly distributed on the horizontal branch pipes 222. The top of the vertical pipes 223 is connected to an annular pipe 224. Multiple aeration heads 24 are evenly distributed on the annular pipe 224. A one-way check valve (not shown in the figure) is provided at the connection between the annular pipe 224 and the vertical pipe 223, or at the connection between the aeration head 24 and the annular pipe 224, to prevent liquid from flowing back into the aeration pipe assembly 22 when aeration is not required. Several large-diameter aeration holes 241 are evenly distributed on the aeration heads 24. The diameter of the aeration holes 241 is determined according to the state of the water to be treated, with the principle of not easily clogging being the selection principle. A microporous mesh layer 27 is provided at a certain distance above the aeration head 24. The microporous mesh layer 27 can be made of a rigid porous mesh plate or a flexible mesh cloth. The microporous mesh layer 27 can be a planar structure or a slightly upward-convex arc structure. The microporous mesh layer 27 is connected to the annular tube 224 through a support frame 25. The unfolded surface of the microporous mesh layer 27 covers the aeration range of all aeration heads 24 arranged on the annular tube 224 so that the bubbles ejected from the aeration heads 24 can be captured and cut by the microporous mesh layer 27 as much as possible after they float to the surface. The pore size of the microporous mesh layer 27 is equal to or slightly smaller than the pore size of the aeration hole 241, so that the bubbles after passing through the microporous mesh layer 27 maintain a similar or smaller size to the bubbles ejected from the aeration hole 241, thereby maintaining a certain gas-liquid contact surface and promoting the integration of oxygen into the water. Preferably, a barbed wire layer 28 is provided above the microporous mesh layer 27. The barbed wire layer 28 is formed by crisscrossing rods or ropes with evenly distributed barbed needles. The barbed wire layer 28 is connected to the support frame 25. The unfolded surface of the barbed wire layer 28 covers the microporous mesh layer 27, so that the air bubbles passing through the microporous mesh layer 27 are punctured before reaching the water, allowing the residual oxygen in the air bubbles to directly mix into the water. This prevents the air bubbles generated by aeration from directly carrying oxygen to the water surface, thereby improving the aeration effect.

[0034] The online monitoring component 3 includes a DO sensor 31 and an ammonia nitrogen sensor 32. The DO sensors 31 are provided in multiples and are evenly distributed on the upper part of the water in the aeration tank 1 to monitor the dissolved oxygen status at different locations in the water. The ammonia nitrogen sensors 32 are provided in at least two locations, respectively located at the inlet 101 and the overflow 104. The ammonia nitrogen sensor 32 at the inlet 101 is used to monitor the organic matter content in the input water to be treated in real time as a basis for judging the water quality status and the amplitude of water quality fluctuations. The ammonia nitrogen sensor 32 at the overflow 104 is used to monitor the residual organic matter content after treatment in real time, and to judge the treatment quality of the water in combination with the water replacement rate.

[0035] The central controller incorporates a feedforward-feedback dual-mode control chip. Its input is connected to the online monitoring component 3 to collect real-time monitoring data from various sensors, and its output is connected to the blower device 21. The central controller adjusts the output airflow of the blower device 21 based on the monitoring results from the online monitoring component 3. Specifically, the feedforward module of the control chip receives and processes the detection values ​​from the ammonia nitrogen sensor 32 located at the inlet 101 and calculates the required adjustment range for the blower device 21. The feedback module of the control chip receives and processes the detection values ​​from the DO sensor 31 and the ammonia nitrogen sensor 32 located at the overflow outlet 104 to fine-tune the output airflow of the blower device 21.

[0036] Furthermore, a flow control valve 4 is provided at the connection between the transverse branch pipe 222 and the air supply pipe 221. The flow control valve 4 is connected to the central controller. The flow control valve 4 adjusts its opening according to the monitoring results of the DO sensor 31 near the transverse branch pipe 222 to adjust the aeration rate of the water above the transverse branch pipe 222.

[0037] Preferably, the blower device 21 includes a frequency converter 211 and multiple sets of fans 212 connected in parallel. The blower device 21 adjusts the power and number of fans 212 in real time according to the monitoring results of the online monitoring component 3, so as to achieve a smaller adjustment precision of the output air volume, so as to better respond to the changes in the detection value obtained by the online monitoring component 3, and further reduce the energy consumption of the blower device 21.

[0038] Furthermore, such as Figure 3As shown, several defoaming rods 5 are provided near the overflow port 104 at the liquid surface of the aeration tank 1. Each defoaming rod 5 includes a main rod 51 and defoaming needles 52 evenly distributed on the main rod 51. The defoaming rods 5 are arranged perpendicular to the water flow direction and span the entire aeration tank 1. Both ends of the defoaming rods 5 are rotatably connected to the aeration tank 1. A baffle 53 is provided near the end of each defoaming needle 52. The baffle 53 is arranged parallel to the defoaming rod 5. The baffle 53 uses the water flow impact to generate the rotational power of the defoaming rod 5. During the rotation of the defoaming rod 5, the end of the defoaming needle 52 cuts the foam accumulated on the water surface, causing the bubbles inside to burst and achieving the defoaming effect, thus avoiding misjudgment by the ammonia nitrogen sensor 32 at the overflow port 104.

[0039] The specific process of online monitoring and linkage control in this embodiment includes: the central controller determines the water quality status and fluctuation range of the input water body based on the detection results of the ammonia nitrogen sensor 32 at the inlet 101, and calculates the required oxygen consumption and the adjustment amount of the initial blower 21 according to the built-in program. It also adjusts the opening of the flow control valve 4 sequentially along the water flow direction according to the water replacement speed of the aeration tank 1 to control the aeration volume of the corresponding horizontal branch pipe 222. Based on the dissolved oxygen status at different locations during the treatment process obtained in real time by the DO sensor 31, it determines whether the dissolved oxygen value of the water body is sufficient and whether to adjust the aeration volume of a certain area in a targeted manner to readjust the dissolved oxygen value of the corresponding area. Based on the detection value of the ammonia nitrogen sensor 32 at the overflow outlet 104 and combined with the water replacement speed of the aeration tank 1, it calculates the difference between the detection value of the same water body and the detection value at the inlet 101, and feeds back and adjusts the output air volume of all blower devices 21 as a whole, that is, synchronously increases or decreases the blower volume of the blower devices 21, so as to realize the self-learning adjustment of the aeration volume of all aeration mechanisms 2 and the calculation of oxygen consumption.

[0040] The advantage of this embodiment is that:

[0041] By incorporating an online monitoring component 3 including a DO sensor 31 and an ammonia nitrogen sensor 32, and a central processor, the output air volume of the blower 21 is controlled in real time, thereby dynamically controlling the output of the aeration mechanism 2 to match the optimal aeration volume of the current water body, achieving efficient and energy-saving wastewater treatment.

[0042] By layering large-aperture annular aeration heads 24, microporous mesh layer 27, and barbed wire layer 28 upwards, the aeration range is expanded, and the bubbles generated by aeration maintain a good gas-liquid contact surface and suspension time in the water, which promotes the full dissolution of oxygen in the bubbles into the water. While avoiding clogging, it effectively improves oxygen transfer efficiency and aeration quality, thereby achieving more precise linkage adjustment of aeration volume.

[0043] Example 2

[0044] like Figure 4As shown, this embodiment provides an aeration device with online monitoring and linkage control, which differs from Embodiment 1 in that:

[0045] The aeration tank 1 is divided into multiple aeration zones 102, which are separated by baffles 103 to form complete partitions and settle the already generated flocs. Each aeration zone 102 is equipped with an aeration pipe group 22, and each aeration pipe group 22 is individually connected to a blower 21. Each aeration zone 102 is equipped with at least one DO sensor 31. The blower 21 adjusts the output air volume according to the monitoring results of the DO sensor 31 in the aeration zone 102 to achieve the optimal dissolved oxygen content range in each aeration zone 102 and precisely adjust the aeration volume.

[0046] Example 3

[0047] like Figure 5 As shown, this embodiment provides an aeration device with online monitoring and linkage control, which differs from the previous embodiments in that:

[0048] In the aeration pipe assembly 22, the vertical pipe 223 is rotatably connected to the horizontal branch pipe 222 via a rotating sleeve 6. The rotating sleeve 6 can be configured to include an outer cylinder 61 fixedly connected to the horizontal branch pipe 222 and an inner cylinder 62 fixedly connected to the vertical pipe 223, with the outer cylinder 61 and inner cylinder 62 rotatably connected relative to each other. The horizontal branch pipe 222 has jet holes 225 on both sides of the vertical pipe 223. A spiral blade 23 is provided below the annular pipe 224 corresponding to the jet holes 225. The spiral blade 23 is fixed on the vertical pipe 223. The airflow column at the jet hole 225 strikes the spiral blade 23 and pushes the spiral blade 23 to drive the vertical pipe 223 and the annular pipe 224 fixed on the vertical pipe 223, the microporous mesh layer 27 and the barbed wire layer 28 to rotate. During the rotation, each component forms a circumferential disturbance to the water body, which promotes the mixing of bubbles and water. At the same time, the bubbles sprayed by the aeration head 24 diffuse centrifugally, forming a larger aeration range, which further promotes mixing and helps to improve oxygen transfer efficiency.

[0049] Preferably, the bottom of the spiral blade 23 is provided with a guide channel 231 spiraling outward along the rotation direction so that the airflow hitting the spiral blade 23 flows in a directional manner along the guide channel 231 to form a rotational centrifugal force and enhance the rotational power; the dividing edge 232 of the guide channel 231 is conical to divide and form multiple airflows entering the guide channel 231, while weakening the direct impact force of the jet airflow on the spiral blade 23.

[0050] Preferably, the support frame 25 is provided with several circumferentially spirally arranged cutting blades 26. The outer edges of the cutting blades 26 are sharpened to form cutting edges 261, so as to guide more of the bubbles sprayed by the aeration head 24 to the microporous mesh layer 27 for cutting and refining. At the same time, during the rotation with the vertical pipe 223, they cut the agglomerates in the water, reduce the particle size of the agglomerates entering the aeration range, delay or even avoid the phenomenon of clogging of the aeration holes 241, and achieve the purpose of anti-clogging. It should be noted that the cutting blades 26 do not necessarily have to completely cover all the peripheral space between the aeration head 24 and the microporous mesh layer 27, it is enough to form a certain degree of guidance and cutting; in order to improve the anti-clogging effect, the cutting blades 26 can also be arranged into a ring with a certain overlapping area but not touching, so that the sewage enters through the gaps between the cutting blades 26 and the central empty area of ​​the ring pipe 224 and mixes with the gas sprayed by the aeration head 24.

[0051] The advantage of this embodiment is that by making the vertical pipe 223, aeration head 24, microporous mesh layer 27 and barbed wire layer 28 rotate, the purpose of further promoting gas-liquid mixing and improving aeration effect is achieved; at the same time, by setting the cutting plate 26 between the aeration head 24 and the microporous mesh layer 27, the purpose of guiding flow and preventing blockage is achieved, reducing the maintenance frequency of the aeration head 24.

[0052] The above description is merely a preferred embodiment of the present utility model and does not constitute any limitation on the technical scope of the present utility model. Therefore, any minor modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model shall still fall within the protection scope of the present utility model.

Claims

1. An online monitoring and linkage control aeration device, comprising an aeration tank and an aeration mechanism, wherein the aeration tank is provided with an inlet and an overflow outlet, and the aeration mechanism includes a blower and an aeration pipe assembly, characterized in that: It also includes an online monitoring component and a central controller. The online monitoring component includes a DO sensor and an ammonia nitrogen sensor. Multiple DO sensors are evenly distributed on the upper part of the aeration tank. At least two ammonia nitrogen sensors are provided, respectively located at the inlet and the overflow outlet. The input end of the central controller is connected to the online monitoring component, and the output end is connected to the blower. The central controller is used to dynamically adjust the output air volume of the blower based on the monitoring results of the online monitoring component. The aeration pipe group includes an air supply pipe and several horizontal branch pipes connected to it. Several vertical pipes are connected to the horizontal branch pipes. The top of the vertical pipes is connected to an annular pipe. Multiple aeration heads are evenly distributed on the annular pipe. Several large-diameter aeration holes are evenly distributed on the aeration heads. A microporous mesh layer is provided above the aeration heads. The microporous mesh layer is connected to the annular pipe through a support frame. The unfolded surface of the microporous mesh layer covers the aeration range of all aeration heads arranged on the annular pipe. The pore size of the microporous mesh layer is equal to or slightly smaller than the pore size of the aeration holes.

2. The aeration device with online monitoring and linkage control according to claim 1, characterized in that: Each of the transverse branch pipes and the gas transmission pipes is equipped with a flow control valve. The flow control valve is connected to the central controller and adjusts its opening based on the monitoring results of the DO sensor located near the transverse branch pipe.

3. The aeration device with online monitoring and linkage control according to claim 1, characterized in that: The aeration tank is divided into multiple aeration zones, which are separated by baffles. Each aeration zone is equipped with one aeration pipe group, and each aeration pipe group is individually connected to a blower. Each aeration zone is equipped with at least one DO sensor. The blower adjusts the output air volume according to the monitoring results of the DO sensor in its respective aeration zone.

4. An aeration device with online monitoring and linkage control according to claim 2 or 3, characterized in that: The blower device includes a frequency converter and multiple sets of fans connected in parallel. The blower device adjusts the fan power and the number of fans that are turned on and off in real time based on the monitoring results of the online monitoring components.

5. The aeration device with online monitoring and linkage control according to claim 1, characterized in that: The vertical pipe is rotatably connected to the horizontal branch pipe via a rotating sleeve. The horizontal branch pipe has jet holes on both sides of the vertical pipe. The annular pipe has a spiral blade below the jet hole, and the spiral blade is fixed on the vertical pipe.

6. The aeration device with online monitoring and linkage control according to claim 5, characterized in that: The bottom of the spiral blade is provided with a guide channel spiraling outward along the rotation direction, and the partition side of the guide channel is conical.

7. The aeration device for online monitoring and linkage control according to claim 5, characterized in that: The support frame is provided with several circumferentially spirally arranged cutting blades, and the outer edges of the cutting blades are sharpened to form cutting edges.

8. An aeration device with online monitoring and linkage control according to claim 1 or 5, characterized in that: A barbed wire layer is provided above the microporous mesh layer. The barbed wire layer is composed of rods or ropes with evenly distributed barbed needles arranged in a crisscross pattern. The barbed wire layer is connected to the support frame, and the unfolded surface of the barbed wire layer covers the microporous mesh layer.

9. The aeration device for online monitoring and linkage control according to claim 1, characterized in that: Several defoaming rods are provided near the overflow outlet of the aeration tank. Each defoaming rod includes a main rod and defoaming needles evenly distributed on the main rod. The defoaming rods are arranged perpendicular to the water flow direction and span the entire aeration tank. Both ends of the defoaming rods are rotatably connected to the aeration tank.

10. An aeration device with online monitoring and linkage control according to claim 9, characterized in that: A baffle is provided near the end of the defoaming needle. The baffle is arranged parallel to the defoaming rod. The baffle uses the water flow impact to generate the rotational power of the defoaming rod.

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