An aeration conditioning device and method for sewage treatment

Abstract

The present application provides a kind of aeration adjustment device and method for sewage treatment, the aeration adjustment device is used on reactor, the aeration adjustment device includes aeration mechanism being arranged on the reactor and driving mechanism for driving the aeration mechanism to operate.The present application adjusts the distance between pulse aeration pipe and microporous aeration pipe to adjust dissolved oxygen in water, when pulse aeration pipe and microporous aeration pipe are very close, the micro-bubbles spouted from microporous aeration pipe are collected by pulse aeration pipe to form large bubbles, which reduces oxygen transfer efficiency, and the concentration of dissolved oxygen is low, when pulse aeration pipe and microporous aeration pipe are far apart, the micro-bubbles spouted from microporous aeration pipe are fully contacted with sludge-water mixture before being collected by pulse pipe to form large bubbles, at the same time, due to the space between them is larger, part of the micro-bubbles diffuse outside the collection range of pulse aeration, so that the micro-bubbles in the whole reactor are more, which increases the amount of dissolved oxygen in the reactor.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of sewage treatment, in particular to an aeration adjusting device and method for sewage treatment. BACKGROUND

[0002] In the traditional denitrification process of sewage treatment, the zones of anaerobic, anoxic and aerobic are separated, and the denitrification liquid is returned by a reflux pump to realize denitrification. In order to save the land occupation and energy consumption, the system can be alternately operated in the aerobic, anoxic and anaerobic modes by controlling the aeration in one structure to realize the simultaneous removal of C, N and P. However, in the water environment system, the changes of temperature, influent conditions and sludge concentration will cause the total oxygen demand of the system to fluctuate, resulting in a large fluctuation range of the dissolved oxygen content in the treatment system, which is not conducive to the stable operation of the system. In order to solve this problem, the traditional method is to adjust the aeration amount by frequency control of the fan, which has the disadvantage that when the air quantity needs to be increased, the power of the first motor is increased, which reduces the energy consumption; when the air quantity needs to be reduced, the air output of the fan is reduced, which easily causes the membrane to be blocked.

[0003] Pulse aeration has outstanding advantages in preventing and treating membrane pollution due to its energy saving and strong impact, but the flexibility of pulse aeration in adjusting the dissolved oxygen concentration is poor. SUMMARY

[0004] Therefore, the purpose of the present application is to provide an aeration adjusting device and method for sewage treatment, which can adjust the dissolved oxygen concentration and slow down the membrane pollution by using the characteristics of pulse aeration.

[0005] The present application provides the following technical solution: an aeration adjusting device for sewage treatment, which is used on a reactor, and comprises an aeration mechanism arranged on the reactor.

[0006] The aeration mechanism comprises a gas guide arranged outside the reactor, a plurality of support seats arranged inside the reactor, a microporous aeration pipe arranged on the support seats, and a connecting pipe for connecting the microporous aeration pipe with the output end of the gas guide. The gas guide guides the external gas into the microporous aeration pipe through the connecting pipe. The gas introduced into the microporous aeration pipe is sprayed into the reactor through the micropores of the microporous aeration pipe. The aeration mechanism further comprises an aeration structure for adjusting the amount of bubbles in the reactor.

[0007] Further, the aeration structure comprises a driving mechanism arranged on the reactor, and a pulse aeration pipe arranged on the driving mechanism. The driving mechanism drives the pulse aeration pipe to move. The pulse aeration pipe is located below the membrane tank of the reactor, and the microporous aeration pipe is located below the pulse aeration pipe.

[0008] Furthermore, the aeration structure includes a pulse aeration pipe disposed within the reactor. The pulse aeration pipe is located below the membrane chamber of the reactor. The microporous aeration pipe is located below the pulse aeration pipe. The pulse aeration pipe includes a first aeration pipe body. Multiple air storage sections are evenly spaced on the inner side of the first aeration pipe body. There is a gap between the upper part of the air storage section and the upper side of the inner wall of the first aeration pipe body. Multiple hollow first air outlet pipes are evenly spaced on the first aeration pipe body. The number of first air outlet pipes is the same as the number of air storage sections, and the first air outlet pipes are respectively located at the first air chamber of the air storage section. A first sludge discharge hole is opened at the lower part of the air storage section. Rotating components are disposed on both sides of the first aeration pipe body. The rotating components include a second motor disposed on the first aeration pipe body, a rotating plate rotatably connected to the first aeration pipe body, the rotating plate being connected to the output shaft of the second motor, and folding members connected to the first aeration pipe body on both sides of the rotating plate.

[0009] Furthermore, the pulse aeration pipe includes a first aeration pipe body connected to the drive mechanism. Multiple air storage sections are evenly spaced along the inner side of the first aeration pipe body. A gap exists between the upper part of each air storage section and the upper inner wall of the first aeration pipe body. Multiple hollow first air outlet pipes are evenly spaced along the first aeration pipe body. The number of first air outlet pipes is the same as the number of air storage sections, and each first air outlet pipe is located at a first air chamber of an air storage section. A first sludge discharge hole is opened at the lower part of each air storage section. Rotating components are provided on both sides of the first aeration pipe body. Each rotating component includes a second motor mounted on the first aeration pipe body, a rotating plate rotatably connected to the first aeration pipe body, and the rotating plate connected to the output shaft of the second motor. Folding members are connected to the first aeration pipe body on both sides of the rotating plate.

[0010] Furthermore, the driving mechanism includes a slide rail fixedly connected to the inside of the reactor, a slide rod slidably connected to the slide rail, a fixed frame fixedly connected to the slide rod, and a driving assembly for driving the slide rod to move, wherein the pulse aeration pipe is disposed on the fixed frame;

[0011] The drive assembly includes a connecting frame connected to the reactor, a first motor mounted on the connecting frame, a screw rotatably connected to the connecting frame, a first bevel gear mounted on the output shaft of the first motor, and a second bevel gear mounted on the screw, wherein the first bevel gear meshes with the second bevel gear, and the screw is threadedly connected to the slide bar.

[0012] Furthermore, the aeration regulating device also includes a control mechanism for controlling the operation of the drive mechanism and the pulse aeration pipe. The control mechanism includes a second connecting rod fixedly connected to the slide rod, a dissolved oxygen meter mounted on the second connecting rod, and a controller for receiving signals from the dissolved oxygen meter to control the first motor or the pulse aeration pipe.

[0013] Furthermore, the first aeration pipe body is provided with multiple mesh covers, which are respectively located directly above the first air outlet pipe. Each mesh cover includes several square strips fixedly connected to the first aeration pipe body, and each square strip is provided with a mounting plate. The square strips are arranged in a cross-shaped manner.

[0014] Furthermore, a telescopic frame is provided between the support base and the fixed frame.

[0015] An aeration regulation method for wastewater treatment, applied in the aforementioned aeration regulation device, the aeration regulation method comprising:

[0016] The current dissolved oxygen data and the current drive mechanism readings are obtained through the control mechanism;

[0017] If the current dissolved oxygen data is less than the first preset value, a first formula for the pulse aeration tube movement distance is established based on the current dissolved oxygen data and the current reading of the drive mechanism.

[0018] Based on the first formula for the movement distance of the pulse aeration pipe, the control mechanism controls the drive mechanism to drive the pulse aeration pipe to move, so as to adjust the distance between the pulse aeration pipe and the microporous aeration pipe.

[0019] If the current dissolved oxygen data is greater than the second preset value, a second formula for the pulse aeration pipe movement distance is established based on the current dissolved oxygen data and the current reading of the drive mechanism.

[0020] Based on the second formula for the movement distance of the pulse aeration pipe, the control mechanism controls the drive mechanism to drive the pulse aeration pipe to move, so as to adjust the distance between the pulse aeration pipe and the microporous aeration pipe.

[0021] Furthermore, the step of controlling the drive mechanism to move the pulse aeration tube based on the first formula for the movement distance of the pulse aeration tube, so as to adjust the distance between the pulse aeration tube and the microporous aeration tube, specifically includes:

[0022] Based on the first formula for the movement distance of the pulse aeration tube: The control mechanism controls the drive mechanism to move the pulse aeration pipe according to the ∑ control;

[0023] If, after calculation, ∑>a, then the control mechanism according to The drive mechanism is controlled to move the pulse aeration pipe.

[0024] Where ∑ is the reading of the drive mechanism after the movement. The first preset value, Here, 'a' represents the dissolved oxygen data, and 'a' represents the reading of the drive mechanism when the distance between the pulse aeration tube and the microporous aeration tube is at its maximum. This is the reading of the currently described drive mechanism;

[0025] The step of adjusting the distance between the pulse aeration tube and the microporous aeration tube by controlling the drive mechanism to move the pulse aeration tube according to the second formula for the movement distance of the pulse aeration tube, specifically includes:

[0026] Based on the second formula for the pulse aeration tube movement distance: The control mechanism controls the drive mechanism to move the pulse aeration pipe according to the ∑ control;

[0027] If the calculated value ∑ < 0, then the control mechanism controls the drive mechanism to move the pulse aeration pipe based on the value 0.

[0028] Where ∑ is the reading of the drive mechanism after the movement. Here, Q is the current dissolved oxygen data, a is the second preset value, and a is the reading of the drive mechanism when the distance between the pulse aeration pipe and the microporous aeration pipe is at its maximum. 0 represents the current reading of the drive mechanism, and 0 represents the reading of the drive mechanism when the distance between the microporous aeration tube and the pulse aeration tube is at its shortest.

[0029] The beneficial effects of this invention are as follows: by adjusting the distance between the pulse aeration pipe and the microporous aeration pipe, the dissolved oxygen in the water can be regulated. When the distance between the pulse aeration pipe and the microporous aeration pipe is very close, the microbubbles sprayed from the micropores of the microporous aeration pipe are collected by the pulse aeration pipe to form large bubbles, which reduces the oxygen transfer efficiency and lowers the dissolved oxygen concentration. When the distance between the pulse aeration pipe and the microporous aeration pipe is long, the microbubbles sprayed from the micropores of the microporous aeration pipe come into full contact with the mud-water mixture before being collected by the pulse pipe to form large bubbles. At the same time, due to the increased space between the two, some microbubbles diffuse beyond the pulse aeration collection range, resulting in more microbubbles in the entire reactor and increasing the dissolved oxygen content in the reactor. Attached Figure Description

[0030] Figure 1 This is a three-dimensional structural diagram of the reactor of the present invention.

[0031] Figure 2This is a schematic diagram of the internal three-dimensional structure of the reactor of the present invention.

[0032] Figure 3 This is a partial three-dimensional structural schematic diagram of the reactor of the present invention.

[0033] Figure 4 This is a partial three-dimensional structural diagram of the driving mechanism of the present invention.

[0034] Figure 5 This is a three-dimensional structural diagram of the driving mechanism of the present invention.

[0035] Figure 6 This is a three-dimensional structural diagram of the limiting component of the present invention.

[0036] Figure 7 This is a three-dimensional structural diagram of the pulse aeration tube in Embodiment 2 or Embodiment 3 of the present invention.

[0037] Figure 8 This is a schematic diagram of the internal three-dimensional structure of the pulse aeration tube in Embodiment 2 or Embodiment 3 of the present invention.

[0038] Figure 9 This is a partial three-dimensional structural diagram of the pulse aeration tube in Embodiment 2 or Embodiment 3 of the present invention.

[0039] Figure 10 This is a three-dimensional structural diagram of the mesh cover of the present invention.

[0040] Figure 11 This is a two-dimensional schematic diagram of the pulse aeration tube in Embodiment 2 or Embodiment 3 of the present invention.

[0041] Figure 12 This is a schematic diagram of the gas-gathering state of the present invention.

[0042] Figure 13 This is a schematic diagram of the aeration state of the present invention.

[0043] Figure 14 This is a three-dimensional structural diagram of the aeration structure in Embodiment 2 of the present invention.

[0044] Figure 15 This is a three-dimensional structural diagram of the pulse aeration tube in Embodiment 1 of the present invention.

[0045] Figure 16 This is a schematic diagram of the internal three-dimensional structure of the pulse aeration tube in Embodiment 1 of the present invention.

[0046] Figure 17 This is a two-dimensional schematic diagram of the pulse aeration tube in Embodiment 1 of the present invention.

[0047] The labels in the attached diagram are as follows: 1-reactor, 2-fan, 3-connecting pipe, 4-support base, 5-microporous aeration pipe, 6-telescopic frame, 7-limiting component, 71-connecting block, 72-upper limiter, 73-lower limiter, 8-drive mechanism, 81-connecting frame, 82-first motor, 83-first bevel gear, 84-second bevel gear, 85-slide rod, 86-slide rail, 87-fixed frame, 88-screw, 9-pulse aeration pipe, 91-main body of first aeration pipe, 92-air storage section, 93-rotating component, 931-second motor, 932-rotating component Plate, 933-Folding part, 94-First air chamber, 95-First mud discharge hole, 96-First air outlet pipe, 97-Second aeration pipe body, 98-Arc-shaped part, 99-Air inlet, 910-Second air chamber, 911-Second mud discharge hole, 912-Second air outlet pipe, 10-Bracket, 11-Membrane box, 12-First connecting rod, 13-Level, 14-Second connecting rod, 15-Dissolved oxygen meter, 16-Net cover, 161-Mounting plate, 162-First square strip, 163-Second square strip, 164-Protrusion, 17-Gas, 18-Mounting frame. Detailed Implementation

[0048] To facilitate understanding of the present invention, a more complete description will be given below with reference to the accompanying drawings. Several embodiments of the invention are illustrated in the drawings. However, the invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

[0049] It should be noted that when a component is said to be "fixed to" another component, it can be directly on the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0050] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0051] Example 1

[0052] Embodiment 1 of the present invention provides an aeration regulating device for sewage treatment, such as... Figures 1-3 As shown, the aeration regulating device is used on reactor 1, and the aeration regulating device includes an aeration mechanism disposed on reactor 1;

[0053] The reactor 1 in the attached figure is not specifically limited to a certain shape. That is to say, the aeration regulating device can be used on reactors 1 of different shapes and models. A support 10 is placed inside the reactor, and a membrane box 11 is set on the support. The aeration mechanism is used to regulate dissolved oxygen in the water.

[0054] The aeration mechanism includes an air guide installed on the outside of the reactor 1, several support seats 4 installed inside the reactor 1, microporous aeration pipes 5 installed on the support seats 4, and a connecting pipe 3 for connecting the several microporous aeration pipes 5 to the output end of the air guide. When the air guide is activated, external gas 17 is introduced into the microporous aeration pipe through the connecting pipe 3. The gas 17 introduced into the microporous aeration pipe is sprayed into the interior of the reactor 1 from the micropores of the microporous aeration pipe. The aeration mechanism also includes an aeration structure that can adjust the amount of bubbles collected inside the reactor. The aeration structure includes a drive mechanism 8 installed on the reactor and a pulse aeration pipe 9 installed on the drive mechanism 8. The drive mechanism 8 drives the pulse aeration pipe 9 to move. The pulse aeration pipe 9 is located below the membrane box 11 of the reactor 1, and the microporous aeration pipes 5 are located below the pulse aeration pipe 9.

[0055] The air guide is a blower 2. When the blower 2 is started, external gas 17 is introduced into the microporous aeration pipe through the connecting pipe 3. The gas 17 introduced into the microporous aeration pipe is sprayed into the reactor 1 from the micropores of the microporous aeration pipe 5. The pulse aeration pipe 9 is driven to move by the driving mechanism to adjust the distance between the pulse aeration pipe 9 and the microporous aeration pipe. By adjusting the distance between the pulse aeration pipe 9 and the microporous aeration pipe 5, the dissolved oxygen in the water is adjusted. When the distance between the pulse aeration pipe 9 and the microporous aeration pipe is very close, the microbubbles sprayed from the micropores of the microporous aeration pipe are collected by the pulse aeration pipe 9 to form large bubbles, which reduces the oxygen transfer efficiency and the dissolved oxygen concentration becomes lower. When the distance between the pulse aeration pipe 9 and the microporous aeration pipe 5 is long, the microbubbles sprayed from the micropores of the microporous aeration pipe 5 come into full contact with the mud-water mixture and are then collected by the pulse aeration pipe 9 to form large bubbles. At the same time, due to the increased space between the two, some microbubbles diffuse beyond the pulse aeration collection range, resulting in more microbubbles in the entire reactor 1 and increasing the dissolved oxygen in the reactor 1.

[0056] like Figures 4-5As shown, there are two drive mechanisms 8. Each drive mechanism includes a slide rail 86 fixedly connected to the inner side of the reactor 1, a slide rod 85 slidably connected to the slide rail 86, a fixed frame 87 fixedly connected between the slide rods 85 of the two drive mechanisms, and a drive assembly for driving the slide rods 85 to move. The pulse aeration pipe 9 is disposed on the fixed frame 87. The drive assembly includes a connecting frame 81 connected to the reactor 1, a first motor 82 disposed on the connecting frame 81, a screw 88 rotatably connected to the connecting frame 81, a first bevel gear 83 disposed on the output shaft of the first motor 82, and a second bevel gear 84 disposed on the screw 88. The first bevel gear 83 meshes with the second bevel gear 84. The screw 88 is threadedly connected to the slide rod 85. The control mechanism controls the rotation of the first motor 82.

[0057] The first motor 82 is preferably a servo motor 82, which can achieve precise displacement control. When the control mechanism receives a signal that the dissolved oxygen level in the reactor 1 is too low or too high, it will control the servo motor 82 to start to adjust the distance between the pulse aeration pipe 9 and the microporous aeration pipe. Specifically, the start of the servo motor 82 will drive its output shaft to rotate forward or backward. The rotation of the output shaft will drive the first bevel gear 83 to rotate, the first bevel gear 83 will drive the second bevel gear 84 to rotate, the second bevel gear 84 will drive the screw 88 to rotate, the screw 88 will drive the slide bar 85 to move along the slide rail 86, the slide bar 85 will drive the fixed frame 87 to move, and the fixed frame 87 will drive the pulse aeration pipe 9 to move, thereby adjusting the distance between the pulse aeration pipe 9 and the microporous aeration pipe. The forward rotation of the servo motor 82 drives the pulse aeration pipe 9 to move upward, and the reverse rotation of the servo motor 82 drives the pulse aeration pipe 9 to move downward. Furthermore, according to the design of two drive units, the pulse aeration pipe 9 can move smoothly and prevent the pulse aeration pipe 9 from tilting.

[0058] like Figure 3 and Figure 5 As shown, a telescopic frame is provided between the support base 4 and the fixed frame 87.

[0059] The reactor 1 has two fixed support seats 4. The microporous aeration pipe passes through the two support seats 4 and is fixedly connected to them. The two support seats 4 are respectively provided with telescopic frames between them and the two sides of the fixed frame 87. The telescopic frames can extend and retract to support the fixed frame 87.

[0060] like Figure 5As shown, the control mechanism includes a second connecting rod 14 fixedly connected between the slide rods 85 of the two drive units, a dissolved oxygen meter 15 disposed on the second connecting rod 14, and a controller for receiving signals from the dissolved oxygen meter 15 to control the first motor 82.

[0061] The second connecting rod 14 is used to install the dissolved oxygen meter 15. The probe of the dissolved oxygen meter 15 is immersed in the water in the reactor 1. When the slide bar 85 moves, the dissolved oxygen meter 15 will also be immersed in the water in the reactor 1. The dissolved oxygen meter 15 is used to monitor the dissolved oxygen concentration in the water of the reactor 1 and control the dissolved oxygen between 0.5 mg / L and 3 mg / L. When the dissolved oxygen is detected to be outside this range, a signal is transmitted to the controller, and the servo first motor 82 starts to run, adjusting the distance between the pulse aeration pipe 9 and the microporous pipe.

[0062] like Figure 5 As shown, the control mechanism also includes a first connecting rod 12 fixedly connected between the slide rods 85 of the two drive units. The first connecting rod 12 is located above the second connecting rod 14. A level 13 is provided on the first connecting rod 12. The controller receives the signal from the level 13 to control the first motor 82.

[0063] The first connecting rod 12 is used to install the level 13. The level 13 is used to control whether the pulse aeration pipe 9 is in a horizontal position during the movement of the pulse aeration pipe 9. When it is not horizontal, it sends a signal to the controller, and the controller controls the first motor 82 to make adjustments.

[0064] like Figures 15-17 As shown, the pulse aeration pipe 9 includes a second aeration pipe body 97 with an open side fixedly connected to the fixing frame 87. Multiple U-shaped arc-shaped portions 98 are evenly spaced on the inner side of the second aeration pipe body 97. A gap exists between the upper part of each arc-shaped portion 98 and the upper side of the inner wall of the second aeration pipe body 97. Air inlets 99 are formed between adjacent arc-shaped portions 98 and between the outermost arc-shaped portion 98 and the inner wall of the second aeration pipe body 97. Multiple hollow second air outlet pipes 912 are evenly spaced on the second aeration pipe body 97. The number of second air outlet pipes 912 is the same as the number of arc-shaped portions 98, and the second air outlet pipes 912 are located at the recesses of the arc-shaped portions 98. A second mud discharge hole 911 is opened at the lower part of each arc-shaped portion 98.

[0065] The gas 17 ejected from the microporous aeration pipe enters each of the second air chambers 910 evenly through the air inlet 99. Initially, because the density of the gas 17 is less than that of the liquid, the gas 17 gradually forces the liquid out of the second air chambers 910 from top to bottom under pressure aeration conditions.Figure 12 The diagram shows the gas-gathering state; when gas 17 fills the exhaust section of the second gas chamber 910, gas 17 is instantly discharged from the second exhaust pipe 912. Figure 13 The diagram shows the aeration state. At the same time, the pressure should be reduced and water should enter the second air chamber 910 to form two cycles. The second mud discharge hole 911 is used to discharge the mud from the second air chamber 910.

[0066] like Figure 10 As shown, the second aeration pipe body 97 is provided with a plurality of mesh covers 16, which are respectively located directly above the second air outlet pipe 912, and include a plurality of protrusions 164 fixedly connected to the mesh cover 16 and the second aeration pipe body 97. In this embodiment, there are two square strips, namely the first square strip 162 and the second square strip 163. In other embodiments, the number of square strips can be adjusted according to the usage scenario, with a minimum of two square strips. The first square strip 162 and the second square strip 163 are provided with mounting plates 161, and the first square strip 162 and the second square strip 163 are in an intersecting state. The square strips are provided with protrusions.

[0067] The first square strip 162, the second square strip 163 and the protrusion 164 are used to cut the bubbles discharged from the first air outlet 96, turning large bubbles into small bubbles, which has a better stirring and oxygenation effect. On the other hand, the mounting plate 161 can prevent dead mud from falling into the first air chamber 94, thus preventing the first air chamber 94 from being blocked.

[0068] like Figure 6 As shown, the aeration regulating device further includes a limiting component 7, which includes a connecting block 71 fixedly connected to the reactor 1, an upper limiter 72 and a lower limiter 73 fixedly connected to the connecting block 71, and the first connecting rod 12 located between the upper limiter 72 and the lower limiter 73.

[0069] The upper limit switch 72 and the lower limit switch 73 control the vertical movement distance of the pulse aeration pipe 9 to prevent it from exceeding the maximum limit. Specifically, when the drive mechanism 8 drives the pulse aeration pipe 9 to move, the drive mechanism 8 will also drive the first connecting rod 12 to move. When the first connecting rod 12 moves to the position of the upper limit switch 72, the controller changes the voltage direction, so that the first motor 82 can only rotate in reverse. When the first connecting rod 12 moves to the position of the lower limit switch 73, the controller similarly changes the voltage direction, so that the first motor 82 can only rotate in forward.

[0070] Example 2

[0071] like Figures 7-9 and Figure 14The image shows a second embodiment of the present invention. This embodiment differs from the first embodiment in that: the aeration structure includes a pulse aeration pipe 9 disposed within the reactor 1. The pulse aeration pipe 9 is located below the membrane chamber 11 of the reactor 1. The microporous aeration pipe 5 is located below the pulse aeration pipe 9. The pulse aeration pipe 9 includes a first aeration pipe body 91. Multiple air storage sections 92 are evenly spaced along the inner side of the first aeration pipe body 91. A gap exists between the upper part of each air storage section 92 and the upper side of the inner wall of the first aeration pipe body 91. Multiple hollow first air outlet pipes 96 are evenly spaced along the first aeration pipe body 91. The number of first air outlet pipes 96 is the same as the number of air storage sections 92, and the first air outlet pipes 96 are respectively located in the first air chamber of the air storage section 92. The air storage section 92 has a first sludge discharge hole 95 at its lower part. Rotating components 93 are provided on both sides of the first aeration pipe body 91. The rotating components 93 include a second motor 931 provided on the first aeration pipe body 91, a rotating plate 932 rotatably connected to the first aeration pipe body 91, the rotating plate 932 being connected to the output shaft of the second motor 931, and folding parts 933 connecting both sides of the rotating plate 932 to the first aeration pipe body 91.

[0072] The main body of the first aeration pipe of the pulse aeration pipe is fixedly connected to the support via a mounting bracket, or the main body of the first aeration pipe is connected to the inner wall of the reactor via the support. Specifically, the gas 17 sprayed from the microporous aeration pipe enters each first air chamber 94 evenly. Initially, because the density of the gas 17 is less than that of the liquid, the gas 17 gradually forces the liquid out of the first air chamber 94 from top to bottom under pressure aeration conditions. Figure 12 The diagram shows the gas-gathering state; when gas 17 fills the exhaust section of the first gas chamber 94, gas 17 is instantly discharged from the first exhaust pipe 96. Figure 13The diagram shows the aeration state. Simultaneously, due to reduced pressure, water enters the first air chamber 94, forming a cycle. The first sludge discharge hole 95 is used to discharge sludge from the first air chamber 94. Furthermore, when it is necessary to reduce oxygen transfer efficiency and lower the dissolved oxygen concentration, the operator can control the second motor 931. The operation of the second motor 931 will drive the rotating plate 932 to rotate outwards from the main body 91 of the first aeration pipe. When the rotating plate 932 rotates, the folding member 933 will change from a folded state to an unfolded state. In this embodiment, the folding member 933 is a rubber belt with deformation function. The function of the stack 933 is to prevent the collected bubbles from flowing out through the gap between the rotating plate 932 and the first aeration tube body 91. At this time, the internal space of the pulse aeration tube 9 becomes larger, and more microbubbles ejected from the micropores of the micropore aeration tube 5 will be collected by the pulse aeration tube 9. When it is necessary to increase the oxygen transfer efficiency and increase the dissolved oxygen concentration, the controller can be operated to drive the second motor 931. The second motor 931 will drive the rotating plate 932 to move towards the inside of the first aeration tube body 91. At this time, the internal space of the pulse aeration tube 9 becomes smaller, and the number of collected bubbles will also decrease.

[0073] Example 3

[0074] like Figures 7-9 As shown, this is the third embodiment of the present invention. The difference between this embodiment and the first embodiment is that: the pulse aeration pipe 9 includes an aeration pipe body 91 fixedly connected to the fixing frame 87; a plurality of air storage sections 92 are evenly spaced on the inner side of the aeration pipe body 91; a gap exists between the upper part of each air storage section 92 and the upper side of the inner wall of the aeration pipe body 91; a plurality of hollow air outlet pipes 96 are evenly spaced on the aeration pipe body 91; the number of air outlet pipes 96 is the same as the number of air storage sections 92, and... The air outlet pipes 96 are respectively located in the air chamber of the air storage part 92. The air storage part 92 has a sludge discharge hole 95 at the lower part. Rotating components 93 are provided on both sides of the aeration pipe body 91. The rotating components 93 include a second motor 931 provided on the aeration pipe body 91, a rotating plate 932 rotatably connected to the aeration pipe body 91, the rotating plate 932 being connected to the output shaft of the second motor 931, and folding parts 933 connecting both sides of the rotating plate 932 to the aeration pipe body 91.

[0075] The fixing frame 87 has a through hole in the middle, and the through hole is located on both sides of the rotating component 93, which is relatively far away from the rotating component 93. This prevents the fixing frame 87 from obstructing the rotating component 93 when it rotates. Specifically, the gas 17 sprayed from the microporous aeration pipe enters each air chamber 94 evenly. Initially, because the density of the gas 17 is less than that of the liquid, the gas 17 gradually forces the liquid out of the air chamber 94 from top to bottom under pressure aeration.Figure 12 The diagram shows the gas-gathering state; when gas 17 fills the exhaust section of gas chamber 94, gas 17 is instantly discharged from exhaust pipe 96. Figure 13 The diagram shows the aeration state. Simultaneously, due to reduced pressure, water enters the air chamber 94, forming a cycle. The sludge discharge hole 95 is used to discharge sludge from the air chamber 94. Furthermore, when it is necessary to reduce oxygen transfer efficiency and lower the dissolved oxygen concentration, the operator can control the second motor 931 via the controller. The operation of the second motor 931 will drive the rotating plate 932 to rotate outwards from the aeration pipe body 91. When the rotating plate 932 rotates, the folding piece 933 will change from a folded state to an unfolded state. In this embodiment, the folding piece 933 is a rubber belt with deformation function. The function of the folding piece 933 is to prevent the collected air bubbles from flowing out from the gap between the rotating plate 932 and the aeration pipe body 91. At this time, the internal space of the pulse aeration pipe 9 increases, and more microbubbles ejected from the micropores of the micropore aeration pipe 5 will be collected by the pulse aeration pipe 9. When it is necessary to increase oxygen transfer efficiency and raise the dissolved oxygen concentration, the operator can control the second motor 931 via the controller. The controller drives the second motor 931, which in turn moves the rotating plate 932 towards the inside of the aeration tube body 91. This reduces the internal space of the pulse aeration tube 9, thus decreasing the number of collected bubbles. In other words, when the controller controls the drive mechanism to move the pulse aeration tube 9 closer to the microporous aeration tube 5, reducing oxygen transfer efficiency, the controller also controls the second motor 931 to rotate the rotating plate 932 towards the outside of the aeration tube body 91. This increases the internal space of the pulse aeration tube 9, allowing it to collect more bubbles and further reducing oxygen transfer efficiency. Conversely, when the controller controls the drive mechanism to move the pulse aeration tube 9 away from the microporous aeration tube 5, increasing oxygen transfer efficiency, the controller also controls the second motor 931 to rotate the rotating plate 932 towards the inside of the aeration tube body 91. This reduces the internal space of the pulse aeration tube 9, decreasing bubble collection and thus increasing oxygen transfer efficiency.

[0076] Example 4

[0077] Since the dissolved oxygen concentration in reactor 1 is controlled between 0.5 mg / L and 3 mg / L, fluctuations in the influent concentration, sludge concentration, or temperature can cause the dissolved oxygen concentration to deviate from this range, resulting in fluctuations in effluent quality. Therefore, the second embodiment of the present invention provides an aeration adjustment method for wastewater treatment. This method uses a drive mechanism 8 to control the distance between the microporous aeration pipe and the pulse aeration pipe 9, utilizing the characteristics of large bubbles having poor oxygen transfer efficiency and small bubbles having high oxygen mass transfer efficiency to adjust the dissolved oxygen in the water. The shortest distance between the microporous aeration tube and the pulse aeration tube 9 is 3cm-5cm, and the driving mechanism 8 records this liquid level reading as 0; the longest distance between the microporous aeration tube and the pulse aeration tube 9 is 30cm-50cm, and the reading of the driving mechanism 8 at this time is recorded as a. When the concentration of dissolved oxygen in the water in reactor 1 is <0.5mg / L, the driving mechanism 8 drives the pulse aeration tube 9 to start moving, so that the distance between the microporous aeration tube and the pulse aeration tube 9 increases. The moving distance of the pulse aeration tube 9 is: (0.5mg / L - dissolved oxygen concentration at this time) / 0.5mg / L*(a - current reading of the driving mechanism 8). If the reading of the driving mechanism 8 after the movement is calculated to be >a, then the moving distance is a - current reading of the driving mechanism 8.

[0078] When the dissolved oxygen concentration is >3 mg / L, the drive mechanism 8 drives the pulse aeration pipe 9 to start moving, shortening the distance between the microporous aeration pipe and the pulse aeration pipe 9. The adjustment distance of the pulse aeration pipe 9 is: (dissolved oxygen concentration at this time -3 mg / L) / 3 mg / L*(a-current reading of drive mechanism 8). If the reading of the adjustment system is <0 after the movement, then the reading of drive mechanism 8 after the movement is 0.

[0079] Furthermore, the aeration adjustment method is described in detail, comprising:

[0080] The current dissolved oxygen data and the current reading of the drive mechanism 8 are obtained through the control mechanism;

[0081] If the current dissolved oxygen data is less than a first preset value, which is 0.5 mg / L, a first formula for the movement distance of the pulse aeration pipe 9 is established based on the current dissolved oxygen data and the current reading of the drive mechanism 8.

[0082] Based on the first formula for the moving distance of the pulse aeration pipe 9, the control mechanism controls the drive mechanism 8 to drive the pulse aeration pipe 9 to move, so as to adjust the distance between the pulse aeration pipe 9 and the microporous aeration pipe.

[0083] If the current dissolved oxygen data is greater than the second preset value, which is 3 mg / L, a second formula for the movement distance of the pulse aeration pipe 9 is established based on the current dissolved oxygen data and the current reading of the drive mechanism 8.

[0084] Based on the second formula for the moving distance of the pulse aeration pipe 9, the control mechanism controls the drive mechanism 8 to drive the pulse aeration pipe 9 to move, so as to adjust the distance between the pulse aeration pipe 9 and the microporous aeration pipe.

[0085] The step of adjusting the distance between the pulse aeration pipe 9 and the microporous aeration pipe by controlling the drive mechanism 8 to move the pulse aeration pipe 9 according to the first formula for the moving distance of the pulse aeration pipe 9 specifically includes:

[0086] Based on the first formula for the moving distance of the pulse aeration pipe 9: The control mechanism controls the drive mechanism 8 to move the pulse aeration pipe 9 according to the ∑ control;

[0087] If, after calculation, ∑>a, then the control mechanism according to The drive mechanism 8 is controlled to drive the pulse aeration pipe 9 to move;

[0088] Where ∑ is the reading of the drive mechanism 8 after the movement. The first preset value, Here, 'a' represents the dissolved oxygen data, and 'a' represents the reading of the drive mechanism 8 when the distance between the pulse aeration pipe 9 and the microporous aeration pipe is at its maximum. The reading of the drive mechanism 8 is currently being measured;

[0089] The step of adjusting the distance between the pulse aeration pipe 9 and the microporous aeration pipe by controlling the drive mechanism 8 to move the pulse aeration pipe 9 according to the second formula for the moving distance of the pulse aeration pipe 9 specifically includes:

[0090] Based on the second formula for the moving distance of the pulse aeration pipe 9: The control mechanism controls the drive mechanism 8 to move the pulse aeration pipe 9 according to the ∑ control;

[0091] If the calculated value ∑ < 0, then the control mechanism controls the drive mechanism 8 to drive the pulse aeration pipe 9 to move according to 0;

[0092] Where ∑ is the reading of the drive mechanism 8 after the movement. The dissolved oxygen data is given below, Q is the second preset value, and a is the reading of the drive mechanism 8 when the distance between the pulse aeration pipe 9 and the microporous aeration pipe is at its maximum. 0 represents the current reading of the drive mechanism 8, and 0 represents the reading of the drive mechanism 8 when the distance between the microporous aeration pipe and the pulse aeration pipe 9 is at its shortest.

[0093] In the description of this specification, references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0094] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention. Therefore, the scope of protection of this patent should be determined by the appended claims.

Claims

1. An aeration regulating device for wastewater treatment, the aeration regulating device being used on a reactor, characterized in that, The aeration regulating device includes an aeration mechanism disposed on the reactor; The aeration mechanism includes an air guide installed on the outside of the reactor, several support seats installed inside the reactor, microporous aeration pipes installed on the support seats, and a connecting pipe for connecting the microporous aeration pipes to the output end of the air guide. When the air guide is activated, external gas is introduced into the microporous aeration pipes through the connecting pipes. The gas introduced into the microporous aeration pipes is sprayed into the reactor from the micropores of the microporous aeration pipes. The aeration mechanism also includes an aeration structure that can adjust the amount of bubbles collected inside the reactor. The aeration structure includes a pulse aeration pipe located below the membrane chamber of the reactor, and a microporous aeration pipe located below the pulse aeration pipe. Dissolved oxygen in the water is adjusted by regulating the distance between the pulse aeration tube and the microporous aeration tube.

2. The aeration regulating device according to claim 1, characterized in that, The aeration structure also includes a drive mechanism disposed on the reactor, and a pulse aeration pipe disposed on the drive mechanism, the drive mechanism driving the pulse aeration pipe to move.

3. The aeration regulating device according to claim 2, characterized in that, The pulse aeration pipe includes a first aeration pipe body connected to the drive mechanism. Multiple air storage sections are evenly spaced along the inner side of the first aeration pipe body. A gap exists between the upper part of each air storage section and the upper inner wall of the first aeration pipe body. Multiple hollow first air outlet pipes are evenly spaced along the first aeration pipe body. The number of first air outlet pipes is the same as the number of air storage sections, and each first air outlet pipe is located at a first air chamber of an air storage section. A first sludge discharge hole is opened at the lower part of each air storage section. Rotating components are provided on both sides of the first aeration pipe body. Each rotating component includes a second motor mounted on the first aeration pipe body, a rotating plate rotatably connected to the first aeration pipe body, and the rotating plate connected to the output shaft of the second motor. Folding members are connected to the first aeration pipe body on both sides of the rotating plate.

4. The aeration regulating device according to claim 3, characterized in that, The driving mechanism includes a slide rail fixedly connected to the inside of the reactor, a slide rod slidably connected to the slide rail, a fixed frame fixedly connected to the slide rod, and a driving assembly for driving the slide rod to move. The pulse aeration pipe is disposed on the fixed frame. The drive assembly includes a connecting frame connected to the reactor, a first motor mounted on the connecting frame, a screw rotatably connected to the connecting frame, a first bevel gear mounted on the output shaft of the first motor, and a second bevel gear mounted on the screw, wherein the first bevel gear meshes with the second bevel gear, and the screw is threadedly connected to the slide bar.

5. The aeration regulating device according to claim 4, characterized in that, The aeration regulating device further includes a control mechanism for controlling the operation of the drive mechanism and the pulse aeration pipe. The control mechanism includes a second connecting rod fixedly connected to the slide rod, a dissolved oxygen meter mounted on the second connecting rod, and a controller for receiving signals from the dissolved oxygen meter to control the first motor or the pulse aeration pipe.

6. The aeration regulating device according to claim 3, characterized in that, The first aeration pipe body is provided with multiple mesh covers, which are respectively located directly above the first air outlet pipe. Each mesh cover includes several square strips fixedly connected to the first aeration pipe body. Each square strip is provided with a mounting plate, and the square strips are arranged in a cross-shaped manner.

7. The aeration regulating device according to claim 4, characterized in that, A telescopic frame is provided between the support base and the fixed frame.

8. An aeration regulation method for wastewater treatment, applied in the aeration regulation device according to any one of claims 1-7, characterized in that, The aeration adjustment method includes: The current dissolved oxygen data and the current drive mechanism readings are obtained through the control mechanism; If the current dissolved oxygen data is less than the first preset value, a first formula for the pulse aeration tube movement distance is established based on the current dissolved oxygen data and the current reading of the drive mechanism. Based on the first formula for the movement distance of the pulse aeration pipe, the control mechanism controls the drive mechanism to drive the pulse aeration pipe to move, so as to adjust the distance between the pulse aeration pipe and the microporous aeration pipe. If the current dissolved oxygen data is greater than the second preset value, a second formula for the pulse aeration pipe movement distance is established based on the current dissolved oxygen data and the current reading of the drive mechanism. Based on the second formula for the movement distance of the pulse aeration pipe, the control mechanism controls the drive mechanism to drive the pulse aeration pipe to move, so as to adjust the distance between the pulse aeration pipe and the microporous aeration pipe.

9. The aeration adjustment method according to claim 8, characterized in that, The step of adjusting the distance between the pulse aeration tube and the microporous aeration tube by controlling the drive mechanism to move the pulse aeration tube according to the first formula for the movement distance of the pulse aeration tube, specifically includes: Based on the first formula for the movement distance of the pulse aeration tube: = ( - ) / *(a- The control mechanism is based on the The drive mechanism is controlled to move the pulse aeration pipe. If calculated When >a, the control mechanism is based on a- The drive mechanism is controlled to move the pulse aeration pipe. in, This is the reading of the drive mechanism after movement. The first preset value, Here, 'a' represents the dissolved oxygen data, and 'a' represents the reading of the drive mechanism when the distance between the pulse aeration tube and the microporous aeration tube is at its maximum. This is the reading of the currently described drive mechanism; The step of adjusting the distance between the pulse aeration tube and the microporous aeration tube by controlling the drive mechanism to move the pulse aeration tube according to the second formula for the movement distance of the pulse aeration tube, specifically includes: Based on the second formula for the pulse aeration tube movement distance: = ( -Q) / Q*(a- The control mechanism according to the The drive mechanism is controlled to move the pulse aeration pipe. If calculated When <0, the control mechanism controls the drive mechanism to move the pulse aeration pipe according to 0; in, This is the reading of the drive mechanism after movement. Here, Q is the current dissolved oxygen data, Q is the second preset value, and a is the reading of the drive mechanism when the distance between the pulse aeration pipe and the microporous aeration pipe is at its maximum. 0 represents the current reading of the drive mechanism, and 0 represents the reading of the drive mechanism when the distance between the microporous aeration tube and the pulse aeration tube is at its shortest.

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