A greenhouse gas monitoring device for a sewage treatment plant

Abstract

The application relates to a sewage treatment plant greenhouse gas monitoring device, and relates to the technical field of gas monitoring devices, which comprises a protection bin, a collecting unit, an analyzing unit and a protection unit, the collecting unit and the analyzing unit are arranged in the protection bin, the collecting unit comprises a gas capturing assembly, a gas-liquid separation assembly and a dehumidification assembly, the gas capturing assembly, the gas-liquid separation assembly and the dehumidification assembly are sequentially communicated, the analyzing unit comprises a gas concentration sensor, the gas concentration sensor is communicated with the dehumidification assembly, the protection unit comprises a protection gas generator, the protection gas generator is communicated with the inside of the protection bin, and is used for introducing protection gas into the protection bin. Therefore, the sewage treatment plant greenhouse gas monitoring device can be arranged beside a sewage treatment tank of a sewage treatment plant, greenhouse gases generated in the sewage treatment process can be collected and analyzed in real time, and the timeliness of greenhouse gas detection and analysis can be ensured.

Description

Technical Field

[0001] This application relates to the technical field of gas monitoring devices, and in particular to a greenhouse gas monitoring device for a wastewater treatment plant. Background Technology

[0002] Currently, the number and treatment capacity of urban wastewater treatment plants in my country are increasing year by year. As a major source of dispersed greenhouse gas emissions, wastewater treatment plants generate large amounts of greenhouse gases such as CO2, CH4, and N2O in the wastewater produced in the sedimentation tanks, equalization tanks, anaerobic tanks, aerobic tanks, and flocculation tanks involved in the wastewater treatment process. Most of these greenhouse gases enter the atmosphere directly through dispersion, which has a certain impact on global climate change. Therefore, it is of great significance to collect and analyze the greenhouse gases generated in the wastewater treatment process and formulate corresponding energy-saving and emission-reduction measures.

[0003] Because most commercially available greenhouse gas testing instruments lack corrosion resistance and have specific requirements for temperature and humidity, they can only be used for gas detection in laboratories. Therefore, existing gas detection methods for collecting and analyzing greenhouse gases from wastewater treatment plants require on-site gas collection and storage in gas collection bags or other storage containers, followed by transporting the containers to the laboratory for analysis using specialized instruments. This approach cannot collect greenhouse gases generated during wastewater treatment in real time, resulting in delays and lags in greenhouse gas detection and analysis. This affects the improvement and control of subsequent wastewater treatment processes and hinders the development of energy-saving and emission-reduction measures. Summary of the Invention

[0004] The purpose of this application is to provide a greenhouse gas monitoring device for wastewater treatment plants, which solves the problem that existing greenhouse gas detection methods for wastewater treatment plants cannot collect greenhouse gases generated during the wastewater treatment process in real time, resulting in a certain delay and lag in the detection and analysis of greenhouse gases.

[0005] The greenhouse gas monitoring device for wastewater treatment plants provided in this application adopts the following technical solution:

[0006] A greenhouse gas monitoring device for a wastewater treatment plant includes a protective chamber, a data acquisition unit, an analysis unit, and a protection unit. The data acquisition unit and the analysis unit are located inside the protective chamber. The data acquisition unit includes a gas capture component, a gas-liquid separation component, and a dehumidification component, which are sequentially connected. The analysis unit includes a gas concentration sensor connected to the dehumidification component. The protection unit includes a protective gas generator connected to the interior of the protective chamber for introducing protective gas into the chamber.

[0007] By adopting the above technical solution, greenhouse gases are separated into gas and liquid components through a gas-liquid separation component. The separated greenhouse gases are then further dried and dehumidified by a dehumidification component, thereby reducing the corrosion of the gas concentration sensor by the liquid in the greenhouse gases. At the same time, a protective gas is generated by a protective gas generator and introduced into the protective chamber to keep the protective chamber under a slight positive pressure, preventing air from the external environment from entering the protective chamber and causing corrosion to the relevant components of the acquisition unit and analysis unit.

[0008] Optionally, the gas capture assembly includes a gas collecting pump, the gas collecting pump has a gas collecting pipe at its inlet, the gas collecting pipe extends out of the protective chamber and is used to connect with greenhouse gases generated by the wastewater treatment plant, and the gas-liquid separation assembly is connected to the gas collecting pump's outlet.

[0009] By adopting the above technical solution, greenhouse gases escaping from the surface of the sewage treatment pond can be sucked and transported through a gas collection pump and a collection pipe, thereby accelerating the collection of greenhouse gases escaping from the surface of the sewage treatment pond.

[0010] Optionally, the dehumidification assembly includes a demister and a condenser, wherein the demister is connected to the gas-liquid separation assembly, the condenser is connected to the demister, and the gas concentration sensor is connected to the condenser.

[0011] By adopting the above technical solution, the fog particles and slurry droplets entrained in the greenhouse gas are captured by the demister. After the greenhouse gas is defogged by the demister, it is then condensed and dried by the condenser, which can achieve a good dehumidification effect, thereby reducing the corrosion of the gas concentration sensor by the greenhouse gas.

[0012] Optionally, the acquisition unit further includes a sampling pump, which is connected to the demister and the condenser respectively, and is used to pump the greenhouse gas after demisting by the demister to the condenser.

[0013] By adopting the above technical solution, and using sampling pumps in conjunction with gas collection pumps, the absorption and extraction of greenhouse gases can be enhanced, thereby ensuring a good delivery effect of greenhouse gases.

[0014] Optionally, the collection unit further includes a filter element disposed between the demister and the sampling pump, for filtering greenhouse gases discharged to the sampling pump via the demister.

[0015] By adopting the above technical solution, the filter element can filter dust and solid particles with a diameter of more than 3 micrometers in greenhouse gases, preventing the internal pipes of subsequent components from being blocked.

[0016] Optionally, the acquisition unit further includes a needle valve and a flow meter. The needle valve and the flow meter are located between the demister and the gas concentration sensor. The needle valve is connected to the condenser, the flow meter is connected to the needle valve, and the gas concentration sensor is connected to the flow meter.

[0017] By adopting the above technical solution, the gas flow rate entering the gas concentration sensor can be precisely controlled through the needle valve and flow meter, ensuring smooth airflow and thus effectively improving the detection accuracy of greenhouse gases.

[0018] Optionally, the protection unit further includes a pressure gauge, the pressure measuring end of which is connected to the interior of the protective chamber for monitoring the air pressure inside the protective chamber.

[0019] By adopting the above technical solution, the air pressure inside the protective chamber can be monitored in real time using a pressure gauge, thereby ensuring that the air pressure inside the protective chamber is always in a slightly positive pressure state.

[0020] Optionally, the protection unit further includes an uninterruptible power supply module, which is electrically connected to the protective gas generator and is used to provide uninterrupted power to the protective gas generator.

[0021] By adopting the above technical solution, a stable and uninterrupted power supply is provided to the protective gas generator through the uninterrupted power supply module, ensuring the uninterrupted operation of the protective gas generator and ensuring that the gas pressure inside the protective chamber is always in a slightly positive pressure state.

[0022] Optionally, the protection unit further includes a protective cover, and the protective gas generator and the uninterruptible power supply module are located inside the protective cover.

[0023] By adopting the above technical solution, the protective cover can provide a certain degree of protection for the protective gas generator and the uninterruptible power supply module, avoiding corrosion of the protective gas generator and the uninterruptible power supply module by factors such as air and rainwater in the external environment.

[0024] Optionally, it also includes a trap, which includes a housing, multiple sets of rods, a tensioning mechanism, a float, a first telescopic component, a second telescopic component, a rotating mechanism, a bracket, a rotating shaft, a connecting component, a flexible curtain, and a tensioning mechanism. The housing is provided with an air inlet pipe and a through hole connected to the air inlet pipe. The air inlet pipe is connected to the air inlet end of the trapping pipe. The multiple sets of rods are slidably disposed on the housing and arranged in a ring around the outside of the through hole. The tensioning mechanism is disposed on the housing and is drivenly connected to the rods, used to drive the multiple sets of rods to converge or open in the radial direction of the housing. The float is fixedly connected to the rods. The telescopic mechanism is located on the housing. The bracket is fixedly connected to the first telescopic end of the first telescopic member. The rotating shaft is rotatably located on the bracket. The rotary mechanism is located on the housing and is drivenly connected to the second telescopic member to drive the second telescopic member to rotate circumferentially along the housing. The connecting member is fixedly located on the second telescopic end of the second telescopic member. One end of the flexible curtain is fixedly connected to the rotating shaft, and the other end is fixedly connected to the connecting member. The flexible curtain is wound around the rotating shaft and wrapped around the outside of multiple sets of rods. The tensioning mechanism is located on the bracket and is drivenly connected to the rotating shaft to tension the flexible curtain.

[0025] By adopting the above technical solution, the collector can be floated on the surface of the sewage treatment pond in the sewage treatment plant by means of a float. The greenhouse gases escaping from the surface of the sewage treatment pond are covered and collected by a flexible curtain wrapped around the outside of multiple sets of rods. The diameter of the annular cover formed by the flexible curtain can be adjusted by the coordinated action of the opening and closing mechanism, the first telescopic component, the second telescopic component, the rotation mechanism and the tensioning mechanism. Thus, the coverage range of the flexible curtain can be adjusted according to the size of the sewage treatment pond in different processes, thereby obtaining the best greenhouse gas collection effect.

[0026] In summary, this application includes at least one of the following beneficial technical effects: Greenhouse gases discharged from the wastewater treatment pond are collected by a gas capture component and transported to a gas-liquid separation component for gas-liquid separation. The separated greenhouse gases are then further dried and dehumidified by a dehumidification component to remove corrosive gases, thereby reducing the corrosion of the gas concentration sensor. Simultaneously, a protective gas is generated by a protective gas generator and introduced into the protective chamber, maintaining a slightly positive pressure inside the chamber to prevent external air from entering and corroding the relevant components of the acquisition and analysis units. This allows the wastewater treatment plant greenhouse gas monitoring device of this application to be placed next to the wastewater treatment pond, enabling real-time acquisition and analysis of greenhouse gases generated during wastewater treatment, ensuring the timeliness of greenhouse gas detection and analysis. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of this application;

[0028] Figure 2 This is a schematic diagram of the trap structure in Embodiment 2 of this application;

[0029] Figure 3 This is a cross-sectional view of the trap in Embodiment 2 of this application from a first perspective;

[0030] Figure 4 This is a cross-sectional view of the trap in Embodiment 2 of this application from a second perspective;

[0031] Figure 5 This is a cross-sectional view of the trap in Embodiment 2 of this application from a third perspective;

[0032] Figure 6 This is a cross-sectional view of the rotating component in Embodiment 2 of this application;

[0033] Figure 7 This is a schematic diagram of the structure of the rod, slider, and float in Embodiment 2 of this application;

[0034] In the picture,

[0035] 10. Protective chamber; 20. Acquisition unit; 21. Gas capture assembly; 211. Gas collection pump; 212. Capture pipe; 2121. Inlet; 22. Gas-liquid separation assembly; 23. Dehumidification assembly; 231. Demister; 232. Condenser; 24. Sampling pump; 25. Filter element; 26. Needle valve; 27. Flow meter; 28. First liquid separation pump; 281. First liquid outlet; 29. ​​Second liquid separation pump; 291. Second liquid outlet; 30. Analysis unit; 31. Gas concentration sensor; 311. CO2 sensor; 312. CH4 sensor; 313. N2O sensor; 32. Tail outlet; 40. Protection unit; 41. Protective gas generator; 411. Gas inlet; 42. Pressure gauge; 43. Protective gas output pipe; 44. Protective gas valve; 45. Uninterruptible power supply module; 46. Protective cover;

[0036] 500. Catch; 501. Housing; 5011. Air inlet pipe; 50111. Limiting boss; 5012. Receiving cavity; 5013. Slide groove; 5014. Through hole; 502. Rod; 5021. Slider; 50211. Second plane thread; 503. Tensioning mechanism; 5031. Rotating component; 50311. Driven bevel gear; 50312. First plane thread; 5032. First motor; 5033. Drive bevel gear; 504. Float; 505. First telescopic component; 506. Second telescopic component; 507. Rotary mechanism; 5071. Rotary seat; 50711. First gear; 5072. Second motor; 50721. Second gear; 508. Bracket; 509. Rotating shaft; 510. Connector; 511. Flexible curtain; 512. Tensioning mechanism. Detailed Implementation

[0037] The following is in conjunction with the appendix Figure 1 -Appendix Figure 7 This application will be described in further detail below.

[0038] This application discloses a greenhouse gas monitoring device for a wastewater treatment plant.

[0039] Example 1

[0040] Reference Figure 1 A greenhouse gas monitoring device for a wastewater treatment plant includes a protective chamber 10, a data acquisition unit 20, an analysis unit 30, and a protection unit 40. The data acquisition unit 20 and the analysis unit 30 are located inside the protective chamber 10. The data acquisition unit 20 includes a gas capture component 21, a gas-liquid separation component 22, and a dehumidification component 23, which are connected in sequence. The analysis unit 30 includes a gas concentration sensor 31, which is connected to the dehumidification component 23. The protection unit 40 includes a protective gas generator 41, which is connected to the interior of the protective chamber 10 and is used to introduce protective gas into the protective chamber 10.

[0041] In this embodiment, the greenhouse gas monitoring device for the wastewater treatment plant is directly placed next to the wastewater treatment pond or the plant building. The gas capture component 21 is arranged above the wastewater treatment pond or connected to the exhaust vent of the plant building. Greenhouse gases in the wastewater treatment pond escape into the atmosphere through the water surface or are discharged through the exhaust vent of the plant building. The gas capture component 21 collects the greenhouse gases discharged from the wastewater treatment plant and transports them to the gas-liquid separation component 22. Since the greenhouse gases discharged from the wastewater treatment pond contain a large amount of corrosive water vapor, the gas-liquid separation component 22 separates the greenhouse gases into gas and liquid. The separated greenhouse gases are then further dried and dehumidified by the dehumidification component 23. Finally, the greenhouse gases are discharged into the gas concentration sensor 31, which measures the concentration of different types of gases in the greenhouse gases. Meanwhile, since corrosive gases such as H2S exist in the ambient air near the sewage treatment pond, a protective gas is generated by the protective gas generator 41 and introduced into the protective chamber 10 to maintain a slightly positive pressure inside the chamber, preventing external air from entering and corroding the relevant components of the acquisition unit 20 and analysis unit 30. The gas concentration sensor 31 includes a CO2 sensor 311, a CH4 sensor 312, and an N2O sensor 313. The CO2 sensor 311 measures the concentration of CO2 gas, the CH4 sensor 312 measures the concentration of CH4 gas, and the N2O sensor 313 measures the concentration of N2O gas. The CO2 sensor 311, CH4 sensor 312, and N2O sensor 313 are connected in series. Greenhouse gases flow sequentially through the CO2 sensor 311, CH4 sensor 312, and N2O sensor 313 before being discharged into the atmosphere through the tailpipe 32. The protective gas generator 41 can be a nitrogen generator, a helium generator, or an argon generator. The raw material gas required for the protective gas to be produced by the protective gas generator 41 enters the protective gas generator 41 through the gas inlet 411.

[0042] Reference Figure 1 The gas capture assembly 21 includes a gas collecting pump 211, with a collection pipe 212 at the inlet of the gas collecting pump 211. The inlet end 2121 of the collection pipe 212 extends out of the protective chamber 10 and is used to connect with greenhouse gases generated by the wastewater treatment plant. The gas-liquid separation assembly 22 is connected to the outlet of the gas collecting pump 211. Under the pumping action of the gas collecting pump 211, greenhouse gases escaping from the surface of the wastewater treatment pond can be sucked and transported. The gas collecting pump 211 can be a variable frequency high-pressure vortex pump. A gas collecting hood can be installed at the inlet end 2121 of the collection pipe 212 to facilitate the collection of greenhouse gases escaping from the surface of the wastewater treatment pond. The gas-liquid separation assembly 22 can be a commercially available gas-liquid separator.

[0043] Reference Figure 1The dehumidification component 23 includes a demister 231 and a condenser 232. The demister 231 is connected to the gas-liquid separation component 22, and the condenser 232 is connected to the demister 231. The gas concentration sensor 31 is connected to the condenser 232. The demister 231 can be a wire mesh demister or a corrugated blade demister. The demister 231 captures the mist particles and slurry droplets entrained in the greenhouse gas. The condenser 232 can be a water-cooled condenser, an air-cooled condenser, or a water-air-cooled condenser. After the greenhouse gas is demisted by the demister 231, it is condensed and dried by the condenser 232, which can achieve a good dehumidification effect and reduce the corrosion of the gas concentration sensor 31 by the greenhouse gas.

[0044] Reference Figure 1 The collection unit 20 also includes a sampling pump 24, which is connected to the demister 231 and the condenser 232, respectively, and is used to pump the greenhouse gas after demisting by the demister 231 to the condenser 232. In order to ensure a good delivery effect of greenhouse gas, the sampling pump 24 is used in conjunction with the gas collecting pump 211 to enhance the absorption and delivery of greenhouse gas.

[0045] Reference Figure 1 The collection unit 20 also includes a filter element 25, which is located between the demister 231 and the sampling pump 24. The filter element 25 is used to filter the greenhouse gases discharged from the demister 231 to the sampling pump 24. The filter element 25 can be filter paper, filter cloth or filter screen. The filter element 25 can filter dust and solid particles with a diameter of more than 3 micrometers in the greenhouse gas, preventing the internal pipelines of subsequent components from being blocked.

[0046] Reference Figure 1 The acquisition unit 20 also includes a needle valve 26 and a flow meter 27. The needle valve 26 and the flow meter 27 are located between the demister 231 and the gas concentration sensor 31. The needle valve 26 is connected to the condenser 232, the flow meter 27 is connected to the needle valve 26, and the gas concentration sensor 31 is connected to the flow meter 27. The flow rate of the gas entering the gas concentration sensor 31 can be precisely controlled through the needle valve 26 and the flow meter 27 to ensure smooth airflow and thus effectively improve the detection accuracy of greenhouse gases.

[0047] Reference Figure 1The acquisition unit 20 also includes a first liquid separation pump 28. The gas-liquid separation component 22 has a liquid separation chamber for collecting the liquid produced after greenhouse gases are separated by the gas-liquid separation component 22. A first liquid level sensor is installed inside the liquid separation chamber to monitor the liquid level. The first liquid separation pump 28 is connected to the inside of the liquid separation chamber and is used to discharge the liquid from the liquid separation chamber into the protective chamber 10 through the first outlet 281 of the first liquid separation pump 28. The first liquid level sensor can be a float level gauge. The acquisition unit 20 also includes a second liquid separation pump 29. The condenser 232 has a liquid condensation chamber for collecting the liquid produced after greenhouse gases are condensed by the condenser 232. A second liquid level sensor is installed inside the liquid condensation chamber to monitor the liquid level. The second liquid separation pump 29 is connected to the inside of the liquid condensation chamber and is used to discharge the liquid from the liquid condensation chamber into the protective chamber 10 through the second outlet 291 of the second liquid separation pump 29. The second liquid level sensor can be a float level gauge.

[0048] Reference Figure 1 The protection unit 40 also includes a pressure gauge 42, the pressure measuring end of which is connected to the inside of the protective chamber 10 to monitor the air pressure inside the protective chamber 10. The pressure gauge 42 can monitor the air pressure inside the protective chamber 10 in real time to ensure that the air pressure inside the protective chamber 10 is always in a slightly positive pressure state. The protective gas generator 41 is connected to the inside of the protective chamber 10 through the protective gas output pipe 43. The protective gas output pipe 43 is equipped with a protective gas valve 44 to control the flow of protective gas in the protective gas output pipe 43.

[0049] Reference Figure 1 The protection unit 40 also includes an uninterruptible power supply (UPS) module 45, which is electrically connected to the protective gas generator 41 and is used to provide uninterrupted power to the protective gas generator 41. The UPS module 45 can be a passive standby UPS, an online interactive UPS, or a double conversion UPS. The UPS module 45 provides a stable and uninterrupted power supply to the protective gas generator 41, ensuring the uninterrupted operation of the protective gas generator 41 and ensuring that the air pressure inside the protective chamber 10 is always in a slightly positive pressure state.

[0050] Reference Figure 1 The protection unit 40 also includes a protective cover 46. The protective gas generator 41, the protective gas valve 44, and the uninterruptible power supply module 45 are located inside the protective cover 46. The protective cover 46 can provide a certain degree of protection for the protective gas generator 41, the protective gas valve 44, and the uninterruptible power supply module 45, and prevent the air and rainwater in the external environment from causing corrosion to the protective gas generator 41, the protective gas valve 44, and the uninterruptible power supply module 45.

[0051] It also includes a PLC controller. Pressure gauge 42, flow meter 27, first liquid level sensor, second liquid level sensor, CO2 sensor 311, CH4 sensor 312 and N2O sensor 313 are electrically connected to the input terminal of the PLC controller. Protective gas generator 41, protective gas valve 44, gas collecting pump 211, first liquid separation pump 28, sampling pump 24, condenser 232 and second liquid separation pump 29 are electrically connected to the output terminal of the PLC controller. The PLC controller acts as the execution body. Through the connection of the input terminal, it controls the operation of each component at the output terminal according to the process requirements. The components cooperate with each other to measure the concentration of CO2, CH4 and N2O. The PLC controller outputs the real-time monitoring data and statistical results to the touch screen of the PLC controller. The touch screen displays the CO2 concentration, CH4 concentration and N2O concentration in real time. The pressure inside the protective chamber 10 is monitored in real time by pressure gauge 42. When the pressure on pressure gauge 42 is less than or equal to the start-up set pressure value of the PLC controller, the PLC controller controls the protective gas valve 44 to open and the protective gas generator 41 to start, supplying protective gas into the protective chamber 10. When the pressure on pressure gauge 42 is greater than or equal to the stop-off set pressure value of the PLC controller, the PLC controller controls the protective gas valve 44 to close and the protective gas generator 41 to stop, stopping the supply of protective gas into the protective chamber 10, so that the pressure inside the protective chamber 10 is always kept in a slightly positive pressure state. When the pressure on pressure gauge 42 is less than or equal to the alarm set pressure value of the PLC controller, the sealing of the protective chamber 10 needs to be checked. The liquid level in the liquid separation chamber is monitored by the first liquid level sensor. When the liquid level is higher than the start-up set liquid level value of the PLC controller, the PLC controller controls the first liquid separation pump 28 to start and discharge the liquid in the liquid separation chamber. When the liquid level is lower than the start-up set liquid level value, the first liquid separation pump 28 stops running. The liquid level in the liquid condensation chamber is monitored by the second liquid level sensor. When the liquid level is higher than the start-up set liquid level value of the PLC controller, the PLC controller controls the second liquid separation pump 29 to start and discharge the liquid in the liquid condensation chamber. When the liquid level is lower than the start-up set liquid level value, the second liquid separation pump 29 stops running.

[0052] The implementation principle of the greenhouse gas monitoring device for a wastewater treatment plant in this embodiment is as follows: Under the pumping action of the gas collecting pump 211 and the sampling pump 24, the greenhouse gas from the wastewater treatment plant flows sequentially through the collection pipe 212, the gas collecting pump 211, the gas-liquid separation component 22, the demister 231, the filter element 25, the condenser 232, the needle valve 26, and the flow meter 27. It undergoes gas-liquid separation treatment through the gas-liquid separation component 22, demisting treatment through the demister 231, filtration treatment through the filter element 25, condensation and drying treatment through the condenser 232, and flow control through the needle valve 26 and the flow meter 27. Then, the greenhouse gas is sequentially introduced into the CO2 sensor 311, the CH4 sensor 312, and the N2O sensor 313. The CO2 sensor 311, the CH4 sensor 312, and the N2O sensor 313 measure the gas concentrations of CO2, CH4, and N2O in the greenhouse gas, respectively. Meanwhile, protective gas is generated by protective gas generator 41. The protective gas is introduced into protective chamber 10 through protective gas valve 44 and protective gas output pipe 43, so that protective chamber 10 is always kept in a slightly positive pressure state to prevent air from the external environment from entering the protective chamber 10 and causing corrosion to the relevant components of acquisition unit 20 and analysis unit 30.

[0053] Example 2

[0054] Reference Figure 2 and Figure 3A greenhouse gas monitoring device for a wastewater treatment plant, the difference between this embodiment and Embodiment 1 is that it also includes a trap 500. The trap 500 includes a housing 501, multiple sets of rods 502, a tensioning mechanism 503, a float 504, a first telescopic member 505, a second telescopic member 506, a rotating mechanism 507, a support 508, a rotating shaft 509, a connecting member 510, a flexible curtain 511, and a tensioning mechanism 512. The housing 501 is provided with an air inlet pipe 5011 and a through hole 5014 connected to the air inlet pipe 5011. The air inlet pipe 5011 is connected to the air inlet end 2121 of the trapping pipe 212. The multiple sets of rods 502 are slidably disposed on the housing 501 and arranged in a ring around the outside of the through hole 5014. The tensioning mechanism 503 is disposed on the housing 501 and is drively connected to the rods 502 for driving the multiple sets of rods 502. 02. The float 504 is fixedly connected to the rod 502 along the radial direction of the housing 501. The first telescopic mechanism is located on the housing 501. The bracket 508 is fixedly connected to the first telescopic end of the first telescopic member 505. The rotating shaft 509 is rotatably located on the bracket 508. The rotary mechanism 507 is located on the housing 501 and is connected to the second telescopic member 506 for driving the second telescopic member 506 to rotate circumferentially along the housing 501. The connecting member 510 is fixedly located on the second telescopic end of the second telescopic member 506. One end of the flexible curtain 511 is fixedly connected to the rotating shaft 509 and the other end is fixedly connected to the connecting member 510. The flexible curtain 511 is wound around the rotating shaft 509 and wrapped around the outside of multiple sets of rods 502. The tensioning mechanism 512 is located on the bracket 508 and is connected to the rotating shaft 509 for tensioning the flexible curtain 511.

[0055] The float 504 can be a hollow plastic float; the flexible curtain 511 can be a waterproof tarpaulin; the slewing mechanism 507 can be a worm gear slewing module, a gear slewing module, or a slewing hydraulic cylinder module; the first telescopic member 505 can be a first electric push rod, with the first telescopic end being the telescopic rod of the first electric push rod; the second telescopic member 506 can be a second electric push rod, with the second telescopic end being the telescopic rod of the second electric push rod; the tensioning mechanism 512 can be a third motor, which is fixed to the bracket 508. The specific connection relationship between the third motor and the rotating shaft 509 is as follows: the output shaft of the third motor is fixedly connected to one end of the rotating shaft 509.

[0056] Reference Figure 3 and Figure 4 The opening and closing mechanism 503 includes a rotating component 5031, a first motor 5032, and a drive bevel gear 5033, as shown in the reference. Figure 4 and Figure 5 The housing 501 has an internal cavity 5012 and a groove 5013 communicating with the cavity 5012. The rotating component 5031 is rotatably mounted in the cavity 5012. (Refer to...) Figure 6One end face of the rotating component 5031 is provided with a driven bevel gear 50311, and the other end face is provided with a first planar thread 50312. The driving bevel gear 5033 is rotated and disposed in the receiving cavity 5012, meshing with the driven bevel gear 50311. The first motor 5032 is fixed to the housing 501 and is connected to the driving bevel gear 5033 for transmission. The upper end of the rod 502 is provided with a slider 5021, which slides in the groove 5013. (Refer to...) Figure 7 The slider 5021 is provided with a second planar thread 50211, which meshes with the first planar thread 50312.

[0057] When the opening and closing mechanism 503 is in operation, the first motor 5032 drives the drive bevel gear 5033 to rotate, which in turn drives the rotating component 5031 to rotate. The rotating component 5031 drives the slider 5021 to slide along the slide groove 5013, thereby driving multiple sets of rods 502 to converge or open along the radial direction of the housing 501.

[0058] Reference Figure 2 and Figure 3 The rotary mechanism 507 includes a rotary seat 5071 and a second motor 5072. Two sets of limiting bosses 50111 are provided on the outer side of the air intake pipe 5011. The rotary seat 5071 is rotatably sleeved on the outer side of the air intake pipe 5011 and located between the two sets of limiting bosses 50111. A first gear 50711 is provided on the periphery of the rotary seat 5071. The second motor 5072 is fixed to the air intake pipe 5011. A second gear 50721 is provided on the output shaft of the second motor 5072. The second gear 50721 meshes with the first gear 50711. A second telescopic member 506 is fixed to the rotary seat 5071.

[0059] When the rotary mechanism 507 is in operation, the second motor 5072 drives the second gear 50721 to rotate, which in turn drives the first gear 50711 and the rotary seat 5071 to rotate, thereby driving the second telescopic member 506 and the connecting member 510 to rotate.

[0060] The implementation principle of the greenhouse gas monitoring device for a sewage treatment plant in this embodiment is as follows: the collector 500 can be floated on the surface of the sewage treatment pond of the sewage treatment plant by means of the float 504. The greenhouse gas escaping from the surface of the sewage treatment pond is covered by the flexible curtain 511 wrapped around the outside of the multiple sets of rods 502. Then, the greenhouse gas covered by the flexible curtain 511 enters the collection pipe 212 through the through hole 5014 and the air inlet pipe 5011. The opening and closing mechanism 503 can adjust the opening and closing of multiple sets of rods 502 arranged in a ring. When the multiple sets of rods 502 are adjusted, the positions of both ends of the flexible curtain 511 are adjusted by the first telescopic member 505 and the second telescopic member 506 respectively. At the same time, the tensioning mechanism 512 controls the opening and closing tension of the flexible curtain 511 so that the flexible curtain 511 can always be tightly attached to the outside of the multiple sets of rods 502. The rotation mechanism 507 drives the second telescopic member 506 and the connecting member 510 to rotate so that the other end of the flexible curtain 511 can contact the outer part of the flexible curtain 511 wound on the rotating shaft 509, so that the flexible curtain 511 surrounding the outside of the multiple sets of rods 502 can form a closed ring cover. Through the coordinated action of the tensioning mechanism 503, the first telescopic member 505, the second telescopic member 506, the rotation mechanism 507, and the tensioning mechanism 512, the diameter of the annular cover formed by the flexible curtain 511 can be adjusted. In this way, the coverage area of ​​the flexible curtain 511 can be adjusted according to the size of the sewage treatment tank in different processes to obtain the best greenhouse gas collection effect.

[0061] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, all equivalent changes made to the structure, shape, and principle of this application should be included within the scope of protection of this application.

Claims

1. A greenhouse gas monitoring device for a wastewater treatment plant, characterized in that, The system includes a protective chamber (10), a data acquisition unit (20), an analysis unit (30), and a protection unit (40). The data acquisition unit (20) and the analysis unit (30) are located inside the protective chamber (10). The data acquisition unit (20) includes a gas trapping component (21), a gas-liquid separation component (22), and a dehumidification component (23). The gas trapping component (21), the gas-liquid separation component (22), and the dehumidification component (23) are connected in sequence. The analysis unit (30) includes a gas concentration sensor (31), which is connected to the dehumidification component (23). The protection unit (40) includes a protective gas generator (41), which is connected to the interior of the protective chamber (10) and is used to introduce protective gas into the protective chamber (10); the gas collection assembly (21) includes a gas collecting pump (211), the gas collecting pump (211) has a collection pipe (212) at its inlet, and the inlet end (2121) of the collection pipe (212) extends out of the protective chamber (10) and is used to connect with the greenhouse gas generated by the sewage treatment plant; the gas-liquid separation assembly (22) is connected to the outlet of the gas collecting pump (211);It also includes a trap (500), which includes a housing (501), multiple sets of rods (502), a tensioning mechanism (503), a float (504), a first telescopic member (505), a second telescopic member (506), a rotating mechanism (507), a bracket (508), a rotating shaft (509), a connector (510), a flexible curtain (511), and a tensioning mechanism (512). The housing (501) is provided with an air inlet pipe (5011) and is connected to the air inlet pipe (5011). The through hole (5014) is connected to the air inlet pipe (5011) and the air inlet end (2121) of the collecting pipe (212). Multiple sets of rods (502) are slidably disposed on the housing (501) and arranged in a ring around the outside of the through hole (5014). The opening and closing mechanism (503) is disposed on the housing (501) and is connected to the rods (502) for driving multiple sets of rods (502) to converge or open along the radial direction of the housing (501). The float (5014) is connected to the through hole (5014). 4) The first telescopic member (505) is fixedly connected to the rod body (502), and the bracket (508) is fixedly connected to the first telescopic end of the first telescopic member (505). The rotating shaft (509) is rotatably connected to the bracket (508). The rotating mechanism (507) is located on the housing (501) and is connected to the second telescopic member (506) for driving the second telescopic member (506) to rotate circumferentially along the housing (501). The connecting member (509) is fixedly connected to the rod body (502). 10) Fixed to the second telescopic end of the second telescopic member (506), one end of the flexible curtain (511) is fixedly connected to the rotating shaft (509), and the other end is fixedly connected to the connecting member (510). The flexible curtain (511) is wound around the rotating shaft (509) and wrapped around the outside of multiple sets of rods (502). The tensioning mechanism (512) is located on the bracket (508) and is connected to the rotating shaft (509) for tensioning the flexible curtain (511).

2. The greenhouse gas monitoring device for a wastewater treatment plant according to claim 1, characterized in that, The dehumidification component (23) includes a demister (231) and a condenser (232). The demister (231) is connected to the gas-liquid separation component (22), the condenser (232) is connected to the demister (231), and the gas concentration sensor (31) is connected to the condenser (232).

3. The greenhouse gas monitoring device for a wastewater treatment plant according to claim 2, characterized in that, The acquisition unit (20) also includes a sampling pump (24), which is connected to the demister (231) and the condenser (232) respectively, and is used to pump the greenhouse gas after the demister (231) is demisted to the condenser (232).

4. The greenhouse gas monitoring device for a wastewater treatment plant according to claim 3, characterized in that, The collection unit (20) also includes a filter (25) disposed between the demister (231) and the sampling pump (24) for filtering greenhouse gases discharged to the sampling pump (24) via the demister (231).

5. A greenhouse gas monitoring device for a wastewater treatment plant according to claim 2, characterized in that, The acquisition unit (20) also includes a needle valve (26) and a flow meter (27). The needle valve (26) and the flow meter (27) are located between the demister (231) and the gas concentration sensor (31). The needle valve (26) is connected to the condenser (232), the flow meter (27) is connected to the needle valve (26), and the gas concentration sensor (31) is connected to the flow meter (27).

6. A greenhouse gas monitoring device for a wastewater treatment plant according to claim 1, characterized in that, The protection unit (40) also includes a pressure gauge (42), the pressure measuring end of which is connected to the inside of the protective chamber (10) for monitoring the air pressure inside the protective chamber (10).

7. A greenhouse gas monitoring device for a wastewater treatment plant according to claim 1, characterized in that, The protection unit (40) also includes an uninterruptible power supply module (45), which is electrically connected to the protective gas generator (41) and is used to provide uninterrupted power supply to the protective gas generator (41).

8. A greenhouse gas monitoring device for a wastewater treatment plant according to claim 7, characterized in that, The protection unit (40) also includes a protective cover (46), and the protective gas generator (41) and the uninterruptible power supply module (45) are located inside the protective cover (46).

Images