Device for measuring standard oxygen mass transfer efficiency and alpha value in process state

Abstract

The utility model relates to the technical field of sewage treatment, and discloses a standard oxygen mass transfer efficiency and alpha value measuring device in a process state, which comprises a base, an aeration tank is fixedly connected to the middle of the top end of the base, a first motor is fixedly connected to the middle upper part of the rear side of the left wall of the aeration tank, and a groove is formed in the middle upper part of the inner side of the aeration tank; the output end of the first motor penetrates through the aeration tank and is fixedly connected with a transmission rod, worms are fixedly connected to the left side and the right side of the outer wall of the transmission rod, threaded rods are rotationally connected to the left side and the right side of the interior of the groove, and worm wheels are fixedly connected to the rear sides of the outer walls of the two threaded rods. According to the utility model, the second motor drives the horizontal gear to rotate, and the horizontal gear is meshed with the rack, so that when the horizontal gear rotates, the horizontal gear drives the supporting seat to slide left and right on the supporting frame, different positions of the aeration tank can be detected, and the standard oxygen mass transfer efficiency and the alpha value in an actual process state can be effectively measured.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment technology, and in particular to a device for measuring standard oxygen mass transfer efficiency and α value under process conditions. Background Technology

[0002] Aeration systems are an essential component of almost all activated sludge processes, playing a crucial role in providing oxygen and thoroughly mixing wastewater and sludge. Aeration systems can be categorized into blower aeration, jet aeration, and mechanical aeration. Currently, microporous aeration, which falls under the category of blower aeration, is the most widely used in wastewater treatment. The microporous aerator is the core of the microporous aeration system, and its overall quality directly determines the effluent quality and operating costs of biological wastewater treatment. The industry standard "Determination of Oxygen Transfer Performance of Microporous Aerators in Clear Water (CJ / T 475-2015)" stipulates the use of Standard Oxygen Transfer Efficiency (SOTE) to describe the oxygenation performance of microporous aerators under clear water conditions. αSOTE is the standard oxygen transfer efficiency of the aerator under process conditions, reflecting the true oxygen transfer efficiency of the aerator and providing comparability under complex and variable process conditions. The α value equals αSOTE divided by SOTE, and it is an important indicator reflecting the overall oxygen transfer performance of the aeration system. It can quantify the actual situation of aeration oxygen transfer efficiency under process conditions and the degree of environmental influence.

[0003] A search revealed Chinese Patent Publication No. CN103278344A, which discloses a device for measuring the comprehensive oxygenation performance of an aerator under process conditions. The device includes: an inlet gas analyzer, installed before the blower, for measuring the flow rate, temperature, humidity, and O2 and CO2 content of the inlet gas; and an exhaust gas collection device, installed above the aeration tank. The exhaust gas collection device is retractable, and the exhaust gas analyzer, connected to the exhaust gas collection device and installed outside the aeration tank, measures the flow rate, temperature, CO2, and O2 content of the exhaust gas. This invention provides a device for measuring the comprehensive oxygenation performance of an aerator under process conditions. This device can effectively measure oxygen utilization under actual process conditions, reflecting the oxygenation performance of aerators and providing theoretical support for the evaluation and operation of wastewater treatment plants. However, it only measures oxygen transfer efficiency (αOTE) under process conditions and cannot measure αSOTE or the α value. Under certain conditions, the level of αOTE can reflect the oxygen transfer efficiency of the aerator, but in actual wastewater treatment, process conditions fluctuate (such as temperature, total dissolved solids, and DO). Therefore, αOTE measured under different process conditions cannot reflect the true oxygen transfer performance of the aerator, resulting in poor comparability. Furthermore, this device is inconvenient for measuring different locations within the aeration tank, reducing its accuracy. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a standard oxygen mass transfer efficiency and α value measuring device under process conditions, aiming to improve the problem that it is inconvenient to measure the standard oxygen mass transfer efficiency αSOTE and α value at different locations in the aeration tank when using the comprehensive oxygenation performance measuring device of aerator under process conditions.

[0005] To achieve the above objectives, this utility model adopts the following technical solution: a device for measuring standard oxygen mass transfer efficiency and α value under process conditions, comprising a base, an aeration tank fixedly connected to the top center of the base, a first motor fixedly connected to the upper middle part of the left rear side of the aeration tank, a groove formed in the upper middle part of the inner side of the aeration tank, the output end of the first motor penetrating the aeration tank and fixedly connected to a transmission rod, worm gears fixedly connected to the left and right sides of the outer wall of the transmission rod, threaded rods rotatably connected to the left and right sides of the inner side of the groove, worm wheels fixedly connected to the rear sides of the outer walls of the two threaded rods, the two worm wheels respectively meshing with the corresponding worm gears, a common support frame threadedly connected to the outer sides of the two threaded rods, a sliding seat slidably connected to the outer side of the support frame, a moving component provided on the top rear side of the sliding seat, a support rod fixedly connected to the top center of the sliding seat, the bottom end of the support rod penetrating the sliding seat, a collection hopper fixedly connected to the lower middle part of the outer side of the support rod, and a cleaning mechanism provided on the top of the support rod, the cleaning mechanism being used to facilitate and ensure the normal operation of the detector of the device.

[0006] Through the above technical solution, the support frame can move back and forth, enabling the detection work at different positions in the aeration tank. It can effectively measure the standard oxygen mass transfer efficiency and α value under actual process conditions, and more accurately and truly reflect the actual performance of the aerator and the degree of influence of process conditions, thus improving the accuracy of the device's measurement.

[0007] As a further description of the above technical solution:

[0008] The cleaning mechanism includes a hollow block, which is fixedly connected to the top of a support rod. A motor is fixedly connected to the left side of the hollow block, and the output end of the motor passes through the hollow block and is fixedly connected to a driving bevel gear. A rotating rod is rotatably connected to the middle of the bottom inner side of the hollow block, and a driven bevel gear is fixedly connected to the top of the rotating rod. The driven bevel gear meshes with the driving bevel gear. A cylindrical filter screen is fixedly connected to the bottom of the rotating rod, passing through the hollow block and the support rod in sequence. A multi-parameter water quality sensor is fixedly connected to the top inner side of the cylindrical filter screen. L-shaped plates are fixedly connected to the bottom of both the left and right sides of the support rod, and cleaning brushes are fixedly connected to adjacent L-shaped plates in sequence.

[0009] Through the above technical solution, the cylindrical filter screen can filter the sewage entering the multi-parameter water quality sensor, and the cylindrical filter screen can be cleaned with a cleaning brush to prevent it from being clogged by impurities, thus improving the practicality of the device.

[0010] As a further description of the above technical solution:

[0011] The moving component includes a second motor, the output end of which passes through the sliding seat and is fixedly connected to a flat gear. A rack is fixedly connected to the rear side of the support frame, and the rack meshes with the flat gear.

[0012] With the above technical solution, the motor drives the flat gear to rotate, which in turn drives the sliding seat to slide left and right on the support frame.

[0013] As a further description of the above technical solution:

[0014] A gas analyzer is fixedly connected to the upper right side of the aeration tank, and an air supply pipe is connected to the rear top of the collection hopper. The right end of the air supply pipe is connected to the top of the gas analyzer.

[0015] Through the above technical solution, the exhaust gas from the aeration tank is collected by the collection bucket, and the collected exhaust gas reaches the exhaust gas inlet of the gas analyzer through the gas delivery pipe.

[0016] As a further description of the above technical solution:

[0017] An atmospheric pressure sensor is fixedly connected to the top front of the gas analyzer, and a display screen is fixedly connected to the upper right side of the gas analyzer.

[0018] The gas analyzer, based on the above technical solution, is used to determine the oxygen content and flow rate of air and exhaust gas. It includes an atmospheric pressure sensor, an inlet / outlet, a solenoid valve, a thermal flow meter, an absorption column, a miniature vacuum pump, an oxygen sensor, an exhaust port, a data analyzer, and an interactive panel. Specifically, when measuring air, the solenoid valve on the air inlet side is open, while the solenoid valve on the exhaust gas inlet side is closed; conversely, when measuring exhaust gas, the solenoid valve on the exhaust gas inlet side is open, while the solenoid valve on the air inlet side is closed, enabling more accurate measurements.

[0019] As a further description of the above technical solution:

[0020] An air pump is fixedly connected to the top right side of the base. An aeration pipe is connected to the left end of the air pump. The left end of the aeration pipe passes through the aeration tank. Multiple microporous aerators are equidistantly arranged at the top of the aeration pipe.

[0021] Through the above technical solution, the air pump supplies air to the aeration pipe, and the gas forms tiny bubbles through the microporous aerator and diffuses into the aeration tank to achieve aeration and oxygenation.

[0022] As a further description of the above technical solution:

[0023] A scale is fixedly connected to the rear right side of the aeration tank, and the scale has graduations on its front side.

[0024] The above technical solution allows staff to clearly understand the amount of wastewater in the aeration tank through the scale on the front side of the ruler.

[0025] As a further description of the above technical solution:

[0026] A controller is fixedly connected to the upper right side of the front wall of the aeration tank, and the controller is electrically connected to the motor and the motor respectively.

[0027] Through the above technical solution, the controller can control the operation of the first motor, the second motor, and the motor respectively.

[0028] As a further description of the above technical solution:

[0029] The aeration tank has an inlet connected to the lower right rear side and an outlet connected to the lower left side.

[0030] Through the above technical solution, the inlet can introduce untreated sewage into the aeration tank, and the treated sewage can be sent out of the device through the outlet.

[0031] This utility model has the following beneficial effects:

[0032] 1. In this utility model, the first motor drives the worm to rotate through the transmission rod. Since the worm wheel meshes with the worm, the worm wheel will drive the threaded rod to rotate. At this time, the support frame will move back and forth. At the same time, the second motor will drive the spur gear to rotate. Since the spur gear meshes with the rack, when the spur gear rotates, it will drive the support seat to slide left and right on the support frame. This allows for the detection of different positions in the aeration tank. It can effectively measure the standard oxygen mass transfer efficiency and α value under actual process conditions, and can more accurately and truly reflect the actual performance of the aerator and the degree of influence of process conditions, thus improving the accuracy of the device's measurement.

[0033] 2. In this utility model, the cylindrical filter screen can filter the sewage entering the multi-parameter water quality sensor. When a lot of impurities accumulate on the cylindrical filter screen, the motor drives the active bevel gear to rotate. Since the driven bevel gear meshes with the active bevel gear, the driven bevel gear can drive the cylindrical filter screen to rotate through the rotating rod. At this time, the cleaning brush can clean the cylindrical filter screen, so that it will not be blocked by impurities, thus improving the practicality of the device. Attached Figure Description

[0034] Figure 1This is a perspective view of a device for measuring standard oxygen mass transfer efficiency and α value under process conditions proposed in this utility model.

[0035] Figure 2 This is a cross-sectional view of the aeration tank structure of the device for measuring standard oxygen mass transfer efficiency and α value under process conditions proposed in this utility model.

[0036] Figure 3 for Figure 2 Enlarged view of point A in the image;

[0037] Figure 4 This is a partial structural cross-sectional view of a standard oxygen mass transfer efficiency and α value measuring device under process conditions proposed in this utility model.

[0038] Figure 5 This is a structural cross-sectional view of the cleaning mechanism of a standard oxygen mass transfer efficiency and α value measuring device under process conditions proposed in this utility model.

[0039] Figure 6 This is a cross-sectional view of a hollow block structure of a device for measuring standard oxygen mass transfer efficiency and α value under process conditions proposed in this utility model.

[0040] Figure 7 This is a partial structural schematic diagram of a device for measuring standard oxygen mass transfer efficiency and α value under process conditions proposed in this utility model.

[0041] Legend:

[0042] 1. Base; 2. Cleaning mechanism; 201. Hollow block; 202. Motor; 203. Driving bevel gear; 204. Rotating rod; 205. Driven bevel gear; 206. Cylindrical filter screen; 207. Multi-parameter water quality sensor; 208. L-shaped plate; 209. Cleaning brush; 3. Aeration tank; 4. First motor; 5. Groove; 6. Transmission rod; 7. Worm gear; 8. Threaded rod; 9. Worm wheel; 10. Support frame; 11. Sliding seat; 12. Second motor; 13. Flat gear; 14. Rack; 15. Support rod; 16. Collection hopper; 17. Gas analyzer; 18. Air supply pipe; 19. Display screen; 20. Atmospheric pressure sensor; 21. Air pump; 22. Aeration pipe; 23. Scale; 24. Gradient; 25. Controller; 26. Microporous aerator; 27. Inlet; 28. Outlet. Detailed Implementation

[0043] 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.

[0044] Reference Figure 2 , Figure 3 and Figure 4 This utility model provides an embodiment of a device for measuring standard oxygen mass transfer efficiency and α value under process conditions, comprising a base 1, an aeration tank 3 fixedly connected to the top center of the base 1, a first motor 4 fixedly connected to the upper middle part of the left rear side of the aeration tank 3, a groove 5 formed in the upper middle part of the inner side of the aeration tank 3, the output end of the first motor 4 passing through the aeration tank 3 and fixedly connected to a transmission rod 6, worm gears 7 fixedly connected to the left and right sides of the outer wall of the transmission rod 6, threaded rods 8 rotatably connected to the left and right sides of the inner side of the groove 5, worm wheels 9 fixedly connected to the rear side of the outer wall of the two threaded rods 8, the two worm wheels 9 respectively meshing with the corresponding worm gears 7, and the outer sides of the two threaded rods 8 threadedly connected with the same A support frame 10 is provided, with a sliding seat 11 slidably connected to the outer side of the support frame 10. A moving component is provided on the top rear side of the sliding seat 11. A support rod 15 is fixedly connected to the top center of the sliding seat 11. The bottom end of the support rod 15 passes through the sliding seat 11. A collection hopper 16 is fixedly connected to the lower outer side of the support rod 15. A cleaning mechanism 2 is provided on the top of the support rod 15. The cleaning mechanism 2 is used to facilitate the normal operation of the detector of the device. The moving component includes a second motor 12. The output end of the second motor 12 passes through the sliding seat 11 and is fixedly connected to a spur gear 13. A rack 14 is fixedly connected to the rear side of the support frame 10. The rack 14 meshes with the spur gear 13.

[0045] Specifically, when using this device, if measurements need to be taken at different locations, the first motor 4 drives the transmission rod 6 to rotate. During the rotation of the transmission rod 6, the worm gears 7 connected to both sides of it also begin to rotate. Because the worm wheel 9 meshes with the worm gear 7, when the worm gear 7 rotates, the worm wheels 9 on both sides also begin to rotate, driving the threaded rod 8 to rotate. At this time, the support frame 10 moves back and forth accordingly. Simultaneously, the second motor 12 drives the spur gear 13 to rotate. Because the spur gear 13 meshes with the rack 14, the spur gear 13 rotates... When the device is in operation, the sliding seat 11 will slide left and right on the support frame 10, which will enable effective measurement of different positions in the aeration tank 3. When performing the measurement, the exhaust gas and air are first pretreated to remove carbon dioxide and water vapor, and then only the oxygen content in the exhaust gas and air is measured. The OTE value, αSOTE and α value under the process conditions are calculated by formula, which can effectively measure the standard oxygen mass transfer efficiency and α value under the actual process conditions. This can more accurately and truly reflect the actual performance of the aerator and the degree of influence of process conditions, thus improving the accuracy of the device's measurement.

[0046] Reference Figure 2 , Figure 5 and Figure 6 The cleaning mechanism 2 includes a hollow block 201, which is fixedly connected to the top of the support rod 15. A motor 202 is fixedly connected to the left side of the hollow block 201. The output end of the motor 202 passes through the hollow block 201 and is fixedly connected to a drive bevel gear 203. A rotating rod 204 is rotatably connected to the middle of the bottom inner side of the hollow block 201. A driven bevel gear 205 is fixedly connected to the top of the rotating rod 204. The driven bevel gear 205 meshes with the drive bevel gear 203. A cylindrical filter screen 206 passes through the hollow block 201 and the support rod 15 in sequence and is fixedly connected to the bottom of the rotating rod 204. A multi-parameter water quality sensor 207 is fixedly connected to the top inner side of the cylindrical filter screen 206. L-shaped plates 208 are fixedly connected to the bottom of both the left and right sides of the support rod 15. Cleaning brushes 209 are fixedly connected to adjacent L-shaped plates 208 in sequence.

[0047] Specifically, during the use of this device, the multi-parameter water quality sensor 207 can measure the temperature, dissolved oxygen concentration, and total dissolved solids concentration of the mixed liquor in the aeration tank 3. During use, the cylindrical filter screen 206 performs preliminary filtration of the wastewater entering the multi-parameter water quality sensor 207, preventing impurities from damaging it. When a large amount of impurities accumulate on the cylindrical filter screen 206, the motor 202 is started. The motor 202 drives the connected drive bevel gear 203 to rotate. Since the drive bevel gear 203 and the driven bevel gear 205 mesh with each other, when the drive bevel gear 203 rotates, the driven bevel gear 205 also rotates, driving the rotating rod 204 to rotate. During the rotation of the rotating rod 204, the cylindrical filter screen 206 connected to it rotates together. As the cylindrical filter screen 206 rotates, the cleaning brush 209 cleans the accumulated impurities on the cylindrical filter screen 206, preventing the filter screen from becoming clogged, ensuring the smooth operation of the filtration system, and improving the practicality of the device.

[0048] Reference Figure 1 and Figure 7 A gas analyzer 17 is fixedly connected to the upper right side of the aeration tank 3. An air supply pipe 18 is connected to the rear top of the collection hopper 16. The right end of the air supply pipe 18 is connected to the top of the gas analyzer 17. An atmospheric pressure sensor 20 is fixedly connected to the front top of the gas analyzer 17. A display screen 19 is fixedly connected to the upper right side of the gas analyzer 17. An air pump 21 is fixedly connected to the right top of the base 1. An aeration pipe 22 is connected to the left end of the air pump 21. The left end of the aeration pipe 22 passes through the aeration tank 3. Multiple microporous aerators 26 are equidistantly arranged on the top of the aeration pipe 22.

[0049] Specifically, the exhaust gas from aeration tank 3 is collected by collection hopper 16. The collected exhaust gas then reaches the inlet of gas analyzer 17 via air delivery pipe 18. Gas analyzer 17 is used to determine the oxygen content and flow rate of air and exhaust gas. It includes an atmospheric pressure sensor 20, inlet and outlet, solenoid valve, thermal flow meter, absorption column, miniature vacuum pump, oxygen sensor, exhaust port, data analyzer, and interactive panel. When measuring air, the solenoid valve on the air inlet side is open, and the solenoid valve on the exhaust gas inlet side is closed; when measuring exhaust gas, the solenoid valve on the exhaust gas inlet side is open, and the solenoid valve on the air inlet side is closed. The thermal flow meter measures the real-time flow rate of exhaust gas and air. The absorption column is divided into two sections: the section near the gas inlet is filled with a composite absorbent of calcium hydroxide and sodium hydroxide to absorb CO2, and the section near the exhaust port is filled with a calcium chloride absorbent to absorb water vapor. To ensure the accuracy of the measurement results, the absorption column should be maintained or replaced regularly to ensure the absorption effect of CO2 and water vapor. The miniature vacuum pump provides a vacuum source to stabilize the airflow direction and flow rate. An oxygen sensor measures the oxygen content of the exhaust gas and air in real time. A data analyzer is used to store, calculate, and output values. Users can control the device, export data, and modify parameters through an interactive panel. The α value and the measured value of the standard oxygen mass transfer efficiency under actual process conditions will be displayed on the panel. The air pump 21 can replenish gas to the aeration pipe 22, and the gas can aerate the sewage inside the aeration tank 3 by passing through the microporous aerator 26.

[0050] Reference Figure 1 and Figure 7 A scale 23 is fixedly connected to the rear right side of the aeration tank 3. A scale 24 is provided on the front side of the scale 23. A controller 25 is fixedly connected to the upper right side of the front wall of the aeration tank 3. The controller 25 is electrically connected to the first motor 4, the second motor 12 and the motor 202 respectively. An inlet 27 is connected to the lower right rear side of the aeration tank 3. An outlet 28 is connected to the lower left side of the aeration tank 3.

[0051] Specifically, the scale 24 on the front of the scale 23 allows staff to clearly understand the amount of sewage in the aeration tank 3. The controller 25 can control the operation of the first motor 4, the second motor 12 and the motor 202 respectively. The first motor 4 and the second motor 12 are model MS8012, and the motor 202 is model F130 miniature. The inlet 27 can introduce untreated sewage into the aeration tank 3, and the treated sewage can be sent out of the device through the outlet 28.

[0052] Working Principle: When using this device, if measurements need to be taken at different locations, the first motor 4 drives the transmission rod 6 to rotate, which in turn drives the worm gears 7 on both sides to rotate. Since the worm wheels 9 mesh with the worm gears 7, the worm wheels 9 on both sides simultaneously drive the threaded rods 8 on both sides to rotate. When the threaded rods 8 rotate, the support frame 10 moves back and forth accordingly. At the same time, the second motor 12 drives the spur gear 13 to rotate. Since the spur gear 13 meshes with the rack 14, when the spur gear 13 rotates, it drives the sliding seat 11 to slide left and right on the support frame 10. This allows for the detection of different locations in the aeration tank 3. During the measurement process, the exhaust gas and air are pretreated to remove carbon dioxide and water vapor. Only the oxygen content in the exhaust gas and air is measured. The OTE value, αSOTE, and α value under the process conditions are calculated using formulas. This effectively measures the standard oxygen mass transfer efficiency and α value under actual process conditions, and more accurately and truly reflects the actual performance of the aerator and its influence from process conditions. The calculation formula is as follows:

[0053]

[0054] β = 1 - 5.7 × 10 -6 ×TDS (4)

[0055]

[0056] Among them, O2 air It is the mole fraction of oxygen in the air; O2 off-gas It is the mole fraction of oxygen in the exhaust gas; α is the saturated dissolved oxygen concentration under standard conditions, mg / L, with a value of 9.08; β is the correction factor for saturated dissolved oxygen with respect to water quality, calculated by formula (4), where TDS is the total dissolved solids concentration measured by the multi-parameter water quality sensor 6, mg / L; τ is the correction factor for saturated dissolved oxygen with respect to temperature, calculated by formula (5). It is the saturated dissolved oxygen concentration at a temperature of t℃, in mg / L. This is the saturated dissolved oxygen concentration at 20℃, with a value of 9.08 mg / L. The saturated dissolved oxygen concentration values ​​at different temperatures are stored in the data analyzer. The temperature of the mixed liquor corresponds to the temperature sensor of the multi-parameter water quality sensor 6; Ω is the correction coefficient of saturated dissolved oxygen with respect to pressure, calculated by formula (6), Ps is 101.325 kPa, Pb is the atmospheric pressure measured on-site at the wastewater treatment plant, obtained by atmospheric pressure sensor 20; DO is the dissolved oxygen concentration of the mixed liquor, measured by the dissolved oxygen sensor of the multi-parameter water quality sensor 6, mg / l; θ is K L a is a temperature correction factor, equal to K at T℃. L a and K at 20℃L The ratio of a to 1.024 varies little within the temperature range of 10-30℃ and is manually entered into the data analyzer for storage as a constant. SOTE is the standard oxygen mass transfer efficiency measured by the aerator in clean water conditions, which needs to be manually entered into the data analyzer for storage by the user. SOTE is obtained from the aerator's quality inspection report or by sending a brand-new aerator of the same model to a professional testing institution for clean water testing.

[0057] Furthermore, during the use of this device, the multi-parameter water quality sensor 207 can measure the temperature, dissolved oxygen concentration, and total dissolved solids concentration of the mixed liquor in the aeration tank 3. During use, the cylindrical filter screen 206 can perform preliminary filtration of the wastewater entering the multi-parameter water quality sensor 207, preventing impurities from damaging it. When a large amount of impurities accumulate on the cylindrical filter screen 206, the motor 202 is started. The motor 202 drives the active bevel gear 203 to rotate. Since the driven bevel gear 205 meshes with the active bevel gear 203, the driven bevel gear 205 will drive the rotating rod 204 to rotate. When the rotating rod 204 rotates, it will drive the cylindrical filter screen 206 to rotate as well. At this time, the cleaning brush 209 can clean the cylindrical filter screen 206, preventing it from being clogged by impurities.

[0058] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. 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. A device for measuring standard oxygen mass transfer efficiency and α value under process conditions, comprising a base (1), characterized in that: An aeration tank (3) is fixedly connected to the top center of the base (1). A first motor (4) is fixedly connected to the upper middle part of the left rear side of the aeration tank (3). A groove (5) is provided in the upper middle part of the inner side of the aeration tank (3). The output end of the first motor (4) passes through the aeration tank (3) and is fixedly connected to a transmission rod (6). Worms (7) are fixedly connected to the left and right sides of the outer wall of the transmission rod (6). Threaded rods (8) are rotatably connected to the left and right sides of the inside of the groove (5). Worm wheels (9) are fixedly connected to the rear side of the outer wall of the two threaded rods (8). The two worm wheels (9) mesh with the corresponding worms (7). The two threaded rods (8) are connected by a threaded connection to the same support frame (10). The support frame (10) is slidably connected to a sliding seat (11). A moving component is provided on the top rear side of the sliding seat (11). A support rod (15) is fixedly connected to the top center of the sliding seat (11). The bottom end of the support rod (15) passes through the sliding seat (11). A collection hopper (16) is fixedly connected to the lower middle part of the outer side of the support rod (15). A cleaning mechanism (2) is provided on the top of the support rod (15). The cleaning mechanism (2) is used to ensure that the detector of the device works normally.

2. The device for measuring standard oxygen mass transfer efficiency and α value under process conditions according to claim 1, characterized in that: The cleaning mechanism (2) includes a hollow block (201), which is fixedly connected to the top of the support rod (15). A motor (202) is fixedly connected to the left side of the hollow block (201). The output end of the motor (202) passes through the hollow block (201) and is fixedly connected to a driving bevel gear (203). A rotating rod (204) is rotatably connected to the middle of the bottom inner side of the hollow block (201). A driven bevel gear (205) is fixedly connected to the top of the rotating rod (204). The driven bevel gear (205) meshes with the driving bevel gear (203). The bottom end of the rotating rod (204) passes through the hollow block (201) and the support rod (15) in sequence and is fixedly connected to a cylindrical filter screen (206). A multi-parameter water quality sensor (207) is fixedly connected to the top inner side of the cylindrical filter screen (206). L-shaped plates (208) are fixedly connected to the bottom left and right sides of the support rod (15). Cleaning brushes (209) are fixedly connected to the adjacent L-shaped plates (208) in sequence.

3. The apparatus for determining standard oxygen mass transfer efficiency and α value under process conditions according to claim 1, characterized in that: The moving component includes a second motor (12), the output end of which passes through the sliding seat (11) and is fixedly connected to a spur gear (13). A rack (14) is fixedly connected to the rear side of the support frame (10), and the rack (14) meshes with the spur gear (13).

4. The device for measuring standard oxygen mass transfer efficiency and α value under process conditions according to claim 1, characterized in that: A gas analyzer (17) is fixedly connected to the upper right side of the aeration tank (3), and an air supply pipe (18) is connected to the top rear side of the collection hopper (16). The right end of the air supply pipe (18) is connected to the top of the gas analyzer (17).

5. The device for measuring standard oxygen mass transfer efficiency and α value under process conditions according to claim 4, characterized in that: An atmospheric pressure sensor (20) is fixedly connected to the top front side of the gas analyzer (17), and a display screen (19) is fixedly connected to the upper right side of the gas analyzer (17).

6. The apparatus for determining standard oxygen mass transfer efficiency and α value under process conditions according to claim 1, characterized in that: An air pump (21) is fixedly connected to the top right side of the base (1). An aeration pipe (22) is connected to the left end of the air pump (21). The left end of the aeration pipe (22) passes through the aeration tank (3). Multiple microporous aerators (26) are equidistantly arranged on the top of the aeration pipe (22).

7. The apparatus for determining standard oxygen mass transfer efficiency and α value under process conditions according to claim 1, characterized in that: A scale (23) is fixedly connected to the rear right side of the aeration tank (3), and a scale (24) is provided on the front side of the scale (23).

8. The apparatus for determining standard oxygen mass transfer efficiency and α value under process conditions according to claim 1, characterized in that: A controller (25) is fixedly connected to the upper right side of the front wall of the aeration tank (3). The controller (25) is electrically connected to the first motor (4), the second motor (12) and the motor (202).

9. The apparatus for determining standard oxygen mass transfer efficiency and α value under process conditions according to claim 1, characterized in that: The aeration tank (3) has an inlet (27) connected to the lower right rear side and an outlet (28) connected to the lower left side.

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