A nitrification liquid reflux module for sewage treatment

Abstract

The utility model relates to a kind of nitrification liquid backflow module for sewage treatment, including shell, nitrification liquid backflow pump, buffer component, leveling assembly, electric control cabinet, monitoring component and temperature and humidity regulating system;Shell includes module frame, module open-close door and multiple module boards;Module open-close door is installed in the front side portion of module frame, and multiple module boards are installed in the top and remaining side portion of module frame;Module frame is supported on ground by leveling assembly;Nitrification liquid backflow pump is installed in module frame by buffer component, and the water outlet of nitrification liquid backflow pump is communicated with the water outlet opened on module board, and the water inlet of nitrification liquid backflow pump is communicated with the water inlet opened on module board;Electric control cabinet, monitoring component and temperature and humidity regulating system are set in module frame;Nitrification liquid backflow pump, monitoring component and temperature and humidity regulating system are respectively connected to electric control cabinet.The beneficial effect is that the deployment flexibility, operation stability and operation and maintenance convenience of nitrification liquid backflow equipment are significantly improved.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment technology, and in particular to a nitrification liquid reflux module for wastewater treatment. Background Technology

[0002] In the field of wastewater treatment, denitrification is one of the core technological processes to ensure that effluent quality meets standards. Nitrification liquor recirculation, as a key step in the denitrification process, has the core function of efficiently recirculating the nitrate-containing mixed liquor generated in the aerobic zone to the anoxic zone. Through denitrification, the nitrate nitrogen is reduced to nitrogen gas, ultimately achieving the removal of total nitrogen from the water. With increasingly stringent environmental policies, the demand for new and upgraded wastewater treatment facilities remains strong. Traditional civil engineering-type nitrification liquor recirculation equipment, due to its long construction cycle, large footprint, and heavy weight, is no longer suitable for the industry's needs for flexible deployment and rapid commissioning. Modular and integrated nitrification liquor recirculation equipment is gradually becoming the market mainstream.

[0003] However, existing modular nitrification liquid recirculation equipment still has many technical pain points: First, it has a bulky structure and heavy weight, which not only occupies a large area, resulting in low site space utilization, but also increases transportation and hoisting costs, making it difficult to adapt to compact sites, emergency response, and other flexible deployment scenarios; Second, the equipment installation has strict requirements for site flatness, and most rely on concrete foundation leveling, lacking a dedicated leveling structure, making it difficult to deploy quickly in uneven sites or emergency response scenarios, and the equipment is prone to tilting due to ground settlement after installation, affecting the operational stability of the recirculation pump. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] In view of the above-mentioned shortcomings and deficiencies of the prior art, the present invention provides a nitrification liquid reflux module for sewage treatment, which solves the technical problems of long construction cycle and difficulty in adapting to diverse operating environments in the prior art.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, the main technical solutions adopted by this utility model include:

[0008] This utility model provides a nitrification liquor recirculation module for wastewater treatment, including a shell, a nitrification liquor recirculation pump, a buffer assembly, a leveling assembly, an electrical control cabinet, a monitoring assembly, and a temperature and humidity control system. The shell includes a modular frame, a modular opening and closing door, and multiple modular plates. The modular opening and closing door is installed on the front side of the modular frame, and the multiple modular plates are installed on the top and other sides of the modular frame. The modular frame is supported on the ground by the leveling assembly. The nitrification liquor recirculation pump is installed inside the modular frame through the buffer assembly. The outlet of the nitrification liquor recirculation pump is connected to the outlet on the modular plate, and the inlet of the nitrification liquor recirculation pump is connected to the inlet on the modular plate. The electrical control cabinet, the monitoring assembly, and the temperature and humidity control system are disposed inside the modular frame. The nitrification liquor recirculation pump, the monitoring assembly, and the temperature and humidity control system are respectively connected to the electrical control cabinet.

[0009] Optionally, the module frame is provided with two parallel main slide rails extending in the front-to-back direction; the buffer assembly includes a mounting plate and at least four buffer seats; the nitrification liquid return pump is provided on the mounting plate, and the four buffer seats are provided at the bottom of the mounting plate. The four buffer seats are arranged in pairs and distributed front to back, and are slidably installed in the two main slide rails respectively; when the module opening and closing door is closed, one of the two buffer seats located in the same slide rail abuts against the module opening and closing door, and the other buffer seat abuts against the rear end of the slide rail.

[0010] Optionally, the module frame is also provided with an extension slide rail; one end of the extension slide rail is hinged to the front end of the main slide rail, and the extension slide rail can rotate in the horizontal plane to engage with the front end of the main slide rail, and the buffer seat can slide from the main slide rail to the extension slide rail.

[0011] Optionally, the buffer seat includes a slider, a buffer spring, and a connecting plate; the slider has a mounting groove in the middle, one end of the buffer spring is set in the mounting groove, and the other end of the buffer spring is fixedly connected to the bottom of the mounting plate through the connecting plate.

[0012] Optionally, the leveling assembly includes a threaded rod, a connecting sleeve, and an anti-slip pad; one end of the threaded rod is fixedly connected to the bottom of the module frame, and the other end of the threaded rod is threadedly connected to the connecting sleeve, with the free end of the connecting sleeve supported on the ground by the anti-slip pad.

[0013] Optionally, the connecting sleeve includes a threaded sleeve and a support sleeve; one end of the threaded sleeve is rotatably connected to one end of the support sleeve, the threaded sleeve is threadedly connected to the threaded rod, and the free end of the support sleeve is supported on the ground by an anti-slip pad.

[0014] Optionally, the temperature and humidity control system includes a temperature and humidity sensor, a heating element, and a dehumidifying element; the temperature and humidity sensor is located at the bottom of the module frame, and the heating element and the dehumidifying element are located inside the module frame; the temperature and humidity sensor, the heating element, and the dehumidifying element are respectively connected to the electrical control cabinet.

[0015] Optionally, the height of the water outlet on the module plate is greater than the height of its water inlet.

[0016] Optionally, the surface of the module frame and the inner side of the module panel are coated with an anti-corrosion coating.

[0017] (III) Beneficial Effects

[0018] The beneficial effects of this utility model are:

[0019] This utility model provides a nitrification liquid recirculation module for wastewater treatment. Through the combination design of a modular frame with multiple modular plates and modular opening and closing doors, it achieves a high degree of integration of the nitrification liquid recirculation pump, electrical control cabinet, monitoring components, and temperature and humidity control system. This significantly reduces the overall size and weight of the equipment, lowers transportation and hoisting costs, and significantly improves adaptability to compact sites and emergency response scenarios. At the same time, this combined structure eliminates the need for complex on-site civil construction, greatly shortening the construction and deployment cycle. The leveling component allows the equipment to quickly complete site leveling without relying on a concrete foundation, effectively avoiding equipment tilting caused by uneven ground and ensuring long-term stable operation of the nitrification liquid recirculation pump. The buffer component can buffer the vibration generated by the pump body during operation, reducing the impact of vibration on pipeline interfaces and electrical components, and extending the service life of the equipment. The various functional components form a coordinated control through the electrical control cabinet, working in conjunction with the temperature and humidity control system and monitoring components to ensure a stable internal environment for the equipment, improving the accuracy of operating parameter control and overall reliability. Compared with existing technologies, it effectively solves the pain points of traditional equipment such as long construction cycle, large footprint, poor adaptability, and existing modular equipment such as difficulty in leveling, large vibration interference, and insufficient integration and coordination, and significantly improves the deployment flexibility, operation stability and maintenance convenience of nitration liquid reflux equipment. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the nitrification liquor reflux module for wastewater treatment in Embodiment 1 of this utility model;

[0021] Figure 2 This is an exploded view of the shell structure in Embodiment 1 of this utility model;

[0022] Figure 3 This is a schematic diagram of the module frame structure in Embodiment 1 of this utility model;

[0023] Figure 4 This is a schematic diagram of the structure of the buffer seat in Embodiment 1 of this utility model;

[0024] Figure 5 This is a schematic diagram of the leveling component in Embodiment 1 of this utility model;

[0025] Figure 6This is a schematic diagram of the nitrification liquid reflux module for wastewater treatment in Embodiment 2 of this utility model.

[0026] [Explanation of Labels in the Attached Image]

[0027] 1: Shell; 11: Modular frame; 12: Modular opening and closing door; 13: Modular plate; 131: Water outlet; 132: Water inlet; 14: Main slide rail; 15: Extension slide rail;

[0028] 2: Nitrification liquid return pump;

[0029] 3: Electrical control cabinet;

[0030] 41: Mounting plate; 42: Slider; 43: Buffer spring; 44: Connecting plate; 45: Buffer layer;

[0031] 51: Threaded rod; 52: Anti-slip mat; 53: Threaded cylinder; 54: Support cylinder;

[0032] 61: Temperature and humidity sensor; 62: Heating element; 63: Dehumidifying element;

[0033] 71: Fresh air unit; 72: Air supply duct; 73: Exhaust duct. Detailed Implementation

[0034] To better understand the above technical solutions, exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present invention are shown in the drawings, it should be understood that the present invention can be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided to enable a clearer and more thorough understanding of the present invention and to fully convey the scope of the present invention to those skilled in the art. The directional terms "front" and "rear" as used herein are... Figure 2 The orientation is used as a reference.

[0035] Example 1:

[0036] like Figure 1 and Figure 2As shown, this embodiment provides a nitrification liquor recirculation module for wastewater treatment, including a housing 1, a nitrification liquor recirculation pump 2, a buffer assembly, a leveling assembly, an electrical control cabinet 3, a monitoring assembly, and a temperature and humidity control system. The housing 1 includes a module frame 11, a module opening / closing door 12, and multiple module plates 13; the module opening / closing door 12 is installed on the front side of the module frame 11, and the multiple module plates 13 are installed on the top and other sides of the module frame 11; the module frame 11 is supported on the ground by the leveling assembly. The nitrification liquor recirculation pump 2 is installed inside the module frame 11 via the buffer assembly. The outlet of the nitrification liquor recirculation pump 2 is connected to an outlet 131 opened on the module plate 13, and the inlet of the nitrification liquor recirculation pump 2 is connected to an inlet 132 opened on the module plate 13. In this embodiment, the height of the outlet 131 on the module plate 13 is greater than the height of its inlet 132. Setting the height of the outlet 131 on the module plate 13 to be greater than the height of the inlet 132 creates a natural height difference. On the one hand, gravity can be used to assist the nitrification liquid return pump 2 in delivering the effluent, reducing the pump's head load and energy consumption. At the same time, it avoids backflow interference caused by the inlet and outlet water, ensuring the smooth delivery of nitrification liquid. On the other hand, this height difference design can effectively prevent water accumulated inside the module frame 11 from flowing back into the inlet 132, reducing the risk of pump idling and cavitation. It also facilitates the drainage of residual nitrification liquid in the pipeline during shutdown maintenance, reducing the impact of sediment accumulation on the pump and pipeline. Combined with the sealing structure of the module frame 11 and the temperature and humidity control system, it further improves the stability and reliability of equipment operation, ensuring the continuous and efficient operation of the nitrification liquid return process. The electrical control cabinet 3, monitoring components, and temperature and humidity control system are located inside the module frame 11. The nitration liquid return pump 2, the monitoring components, and the temperature and humidity control system are respectively connected to the electrical control cabinet 3.

[0037] Specifically, through the combined design of the modular frame 11 with multiple modular panels 13 and modular opening and closing doors 12, a highly integrated assembly of the nitrification liquid return pump 2, electrical control cabinet 3, monitoring components, and temperature and humidity control system is achieved. This significantly reduces the overall size and weight of the equipment, lowers transportation and hoisting costs, and significantly improves adaptability to scenarios such as compact sites and emergency response. At the same time, this combined structure eliminates the need for complex on-site civil construction, greatly shortening the construction and deployment cycle. The leveling component allows the equipment to quickly complete site leveling without relying on a concrete foundation, effectively avoiding equipment tilting caused by uneven ground and ensuring the long-term stable operation of the nitrification liquid return pump 2. The buffer component can buffer the vibration generated during pump operation, reducing the impact of vibration on pipeline interfaces and electrical components, and extending the service life of the equipment. The various functional components form a coordinated control through the electrical control cabinet 3, working in conjunction with the temperature and humidity control system and monitoring components to ensure a stable internal environment for the equipment and improve the accuracy of operating parameter control and overall reliability. Compared with existing technologies, it effectively solves the pain points of traditional equipment such as long construction cycle, large footprint, poor adaptability, and existing modular equipment such as difficulty in leveling, large vibration interference, and insufficient integration and coordination, and significantly improves the deployment flexibility, operation stability and maintenance convenience of nitration liquid reflux equipment.

[0038] Furthermore, such as Figure 2 and Figure 3 As shown, the module frame 11 is provided with two parallel main slide rails 14 extending in the front-to-back direction; the buffer assembly includes a mounting plate 41 and at least four buffer seats; the nitrification liquid return pump 2 is provided on the mounting plate 41, and the four buffer seats are provided at the bottom of the mounting plate 41. The four buffer seats are arranged in pairs and distributed front to back, and are slidably installed in the two main slide rails 14 respectively; when the module opening and closing door 12 is closed, one of the two buffer seats located in the same slide rail abuts against the module opening and closing door 12, and the other buffer seat abuts against the rear end of the slide rail. By setting two parallel extending main slide rails 14 within the module frame 11, combined with the mounting plate 41 of the buffer assembly and four buffer seats, the elastic characteristics of the buffer seats effectively absorb the vibration generated during the operation of the nitrification liquid return pump 2, preventing the vibration from being transmitted to the module frame 11, pipelines, and electrical components, significantly reducing component wear and failure risk, and extending the overall service life of the equipment. Furthermore, the sliding cooperation between the buffer seats and the main slide rails 14 allows the mounting plate 41 to drive the nitrification liquid return pump 2 to move flexibly back and forth along the main slide rails 14. With the opening and closing of the module opening and closing door 12, the pump body can be quickly pulled out of the module frame 11 for inspection or replacement without disassembling the module plate 13, greatly improving the convenience of operation and maintenance. At the same time, when the module opening and closing door 12 is closed, the two buffer seats within the same main slide rail 14 abut against the module opening and closing door 12 and the rear end of the slide rail, forming a bidirectional limiting fixation, effectively preventing the pump body from shifting due to vibration during operation, ensuring the installation stability and operational coaxiality of the nitrification liquid return pump 2, and further enhancing the reliability and safety of equipment operation.

[0039] Furthermore, such as Figure 2 and Figure 3 As shown, the module frame 11 also includes an extension slide rail 15. One end of the extension slide rail 15 is hinged to the front end of the main slide rail 14. The extension slide rail 15 can rotate in the horizontal plane to align with the front end of the main slide rail 14, and the buffer seat can slide from the main slide rail 14 to the extension slide rail 15. By providing an extension slide rail 15 with one end hinged to the front end of the main slide rail 14 within the module frame 11, the hinge characteristic allows the extension slide rail 15 to rotate flexibly in the horizontal plane. When not in use, it can be stored away from the direction of the main slide rail 14, avoiding occupying the internal space of the module frame 11 or interfering with the opening and closing of the module opening and closing door 12 and the normal fixation of the pump body. When it is necessary to repair the nitrification liquid return pump 2, the extension slide rail 15 can be rotated to align with the front end of the main slide rail 14, allowing the buffer seat to drive the mounting plate 41 and the nitrification liquid return pump 2 to slide smoothly from the main slide rail 14 to the extension slide rail 15. The long slide rail 15 allows the pump body to slide outside the module frame 11, providing ample operating space for the overall disassembly, maintenance, or replacement of the pump body without disassembling the module plate 13 or adjusting surrounding components, further simplifying the operation and maintenance process and shortening maintenance time. At the same time, the docking design between the extended slide rail 15 and the main slide rail 14 ensures the smoothness of the pump body sliding process and avoids jamming or deviation during sliding. Combined with the elastic buffer and bidirectional limit function of the buffer seat, it does not affect the stability of the pump body during normal operation and maximizes the convenience and safety of operation and maintenance.

[0040] Furthermore, such as Figure 4As shown, the buffer seat includes a slider 42, a buffer spring 43, and a connecting plate 44. A mounting groove is provided in the middle of the slider 42, one end of the buffer spring 43 is placed in the mounting groove, and the other end of the buffer spring 43 is fixedly connected to the bottom of the mounting plate 41 via the connecting plate 44. By disassembling the buffer seat into a combination of the slider 42, the buffer spring 43, and the connecting plate 44, the slider 42 is matched with the main slide rail 14 to ensure smooth and unobstructed sliding of the buffer seat along the main slide rail 14 and the extension slide rail 15, providing stable support for the pump's movement during operation and maintenance. Furthermore, the mounting groove in the middle of the slider 42 provides mounting and positioning for the buffer spring 43, concentrating and uniformly distributing the elastic force of the buffer spring 43. This effectively absorbs the vibration generated during the operation of the nitrification liquid return pump 2, significantly reducing the transmission of vibration to the module frame 11. This design reduces component wear and failure risks, extending equipment lifespan. Simultaneously, the connecting plate 44 securely fixes the buffer spring 43 to the bottom of the mounting plate 41, ensuring the stability of the buffer spring 43 under stress, preventing spring displacement or detachment, and evenly distributing the pump body weight to the four buffer seats. This ensures the pump body's horizontal installation and coaxial operation. Combined with the sliding function and bidirectional limiting design of the main slide rail 14 and the extension slide rail 15, this further enhances the equipment's operational stability, buffering and vibration reduction effect, and structural reliability without compromising pump body maintenance convenience and sliding smoothness. In this embodiment, a buffer layer 45 is also provided along the circumference of the mounting groove. The buffer layer 45 surrounds the compression spring and can abut against the connecting plate 44 when the buffer spring 43 is compressed to a certain extent. This not only limits excessive compression of the buffer spring 43, preventing spring fatigue damage, but also further weakens vibration transmission through the auxiliary buffering effect of the buffer layer 45. It also protects the connection between the connecting plate 44 and the mounting plate 41, ensuring the overall structural stability of the buffer seat and the smooth operation of the pump body.

[0041] Furthermore, such as Figure 5As shown, the leveling assembly includes a threaded rod 51, a connecting sleeve, and an anti-slip pad 52; one end of the threaded rod 51 is fixedly connected to the bottom of the module frame 11, and the other end of the threaded rod 51 is threadedly connected to the connecting sleeve, and the free end of the connecting sleeve is supported on the ground by the anti-slip pad 52. The threaded engagement structure between the threaded rod 51 and the connecting sleeve allows for flexible height adjustment. Combined with the installation layout at the bottom of the modular frame 11, the support height of each leveling component can be finely adjusted point by point for sites with varying flatness. This allows the modular frame 11 to be quickly kept level without relying on a concrete foundation, effectively avoiding equipment tilting caused by ground settlement or uneven terrain. The anti-slip pad 52 at the free end of the connecting sleeve not only increases the frictional resistance with the ground, preventing displacement due to vibration during equipment operation and ensuring the operational stability and pipeline sealing of the nitrification liquid return pump 2, but also buffers the reaction force transmitted from the ground, reducing vibration transmission and preventing wear on the ground caused by the support structure. Combined with the stability of the threaded connection, this improves the convenience and accuracy of the leveling operation, and enhances the overall support reliability and site adaptability of the equipment.

[0042] Specifically, such as Figure 5 As shown, the connecting sleeve includes a threaded sleeve 53 and a support sleeve 54; one end of the threaded sleeve 53 is rotatably connected to one end of the support sleeve 54, the threaded sleeve 53 is threadedly connected to the threaded rod 51, and the free end of the support sleeve 54 is supported on the ground by an anti-slip pad 52. The rotatable connection design between the threaded cylinder 53 and the support cylinder 54 retains the threaded engagement function between the threaded cylinder 53 and the threaded rod 51, allowing for flexible adjustment of the support height and leveling of the modular frame 11 by rotating the threaded cylinder 53. Simultaneously, it keeps the support cylinder 54 stationary during adjustment, preventing the anti-slip pad 52 from rubbing against the ground as the threaded cylinder 53 rotates. This effectively prevents wear or displacement of the anti-slip pad 52, ensuring it remains in close contact with the ground and maintains stable frictional resistance, thus preventing displacement due to vibration during equipment operation. Furthermore, the stationary support cylinder 54, in conjunction with the anti-slip pad 52, more stably supports the weight of the modular frame 11, reducing the transmission of ground reaction forces and protecting the ground from wear. While ensuring smooth height adjustment and leveling accuracy, this design further enhances the support reliability, anti-slip stability, and service life of the leveling components, providing stronger guarantees for the horizontal state of the modular frame 11 and the stable operation of the nitrification liquid return pump 2.

[0043] Furthermore, such as Figure 1As shown, the temperature and humidity control system includes a temperature and humidity sensor 61, a heating element 62, and a dehumidifying element 63. The temperature and humidity sensor 61 is located at the bottom of the module frame 11, while the heating element 62 and the dehumidifying element 63 are located inside the module frame 11. The temperature and humidity sensor 61, the heating element 62, and the dehumidifying element 63 are connected to the electrical control cabinet 3. By placing the temperature and humidity sensor 61 at the bottom of the module frame 11, it can collect real temperature and humidity data inside the module frame 11, providing reliable feedback for subsequent adjustment actions. The heating element 62 and the dehumidifying element 63, arranged inside the module frame 11, can effectively regulate the temperature and humidity of the internal space, avoiding local environmental imbalance. Through real-time monitoring by temperature and humidity sensor 61, heating element 62 heats up or dehumidifying element 63 dehumidifies, maintaining the environment inside module frame 11 within a suitable range for the operation of the electrical control cabinet 3, monitoring components and nitration liquid return pump 2. This effectively avoids problems such as short circuit aging of electrical components, distortion of monitoring data, and moisture corrosion of pump body mechanical seals caused by high temperature and humidity. At the same time, it avoids the impact of low temperature environment on pump start-up and the stability of operation of various components. On the basis of ensuring the reliable coordinated operation of various functional components, it further extends the overall service life of the equipment and ensures the continuous and efficient advancement of the nitration liquid return process.

[0044] Furthermore, in this embodiment, the surfaces of the module frame 11, the inner surfaces of the module plate 13, the monitoring components, the electrical control cabinet 3, the temperature and humidity sensor 61, the heating element 62, and the dehumidification element 63 are all coated with an anti-corrosion coating. This forms a comprehensive anti-corrosion protection system that can effectively resist the erosion of nitrifying liquid, water vapor, and corrosive media in the air in the wastewater treatment scenario, preventing rust, oxidation, or corrosion damage to the surfaces of various components. This ensures the structural strength and sealing of the module frame 11, preventing problems such as frame deformation and sealing failure of the module plate 13 caused by corrosion. It also protects the core functions of precision electrical components such as the monitoring components and electrical control cabinet 3, as well as temperature and humidity control system components, from corrosion, extending the service life of each component and the overall equipment. At the same time, the presence of the anti-corrosion coating reduces the frequency of component maintenance and replacement costs, ensuring the long-term stable operation of the nitrifying liquid return module in harsh corrosive environments, further improving the environmental adaptability and operational reliability of the equipment.

[0045] The nitrification liquid recirculation module for wastewater treatment provided in this embodiment is used as follows: When deployed on the project site, the operator can finely adjust the height of each support position point by point through the cooperation of the threaded cylinder 53 and the threaded rod 51 of the leveling component, so that the module frame 11 reaches a horizontal state, and the anti-slip pad 52 is in close contact with the ground to ensure the stability of the equipment; the anti-corrosion coating on the surface of the module frame 11, module plate 13 and each functional component can directly resist the corrosive media in the wastewater treatment scenario, without the need for additional anti-corrosion treatment. After startup, the electrical control cabinet 3 coordinates the control of the nitrification liquid return pump 2, the monitoring components, and the temperature and humidity control system. The temperature and humidity sensor 61 collects environmental data inside the module frame 11 in real time. When the temperature and humidity exceed the suitable range, the heating element 62 or the dehumidification element 63 is activated to maintain the stability of the internal environment. The nitrification liquid return pump 2 draws the nitrate nitrogen mixture from the aerobic zone through the inlet. With the help of the height difference between the outlet 131 and the inlet 132 on the module plate 13, it is smoothly transported to the anoxic zone under the combined action of the pump body's power and gravity. The buffer spring 43 and the buffer layer 45 of the buffer seat absorb the pump body vibration together to prevent the vibration from being transmitted to the module frame 11, pipelines, and electrical components. At the same time, the bidirectional limiting structure prevents the pump body from shifting during operation. When the nitrification liquid return pump 2 needs maintenance or replacement, open the module opening and closing door 12, rotate the extension slide rail 15 to align with the main slide rail 14, and then push the mounting plate 41 to slide the pump body along the main slide rail 14 and the extension slide rail 15 to the outside of the module frame 11. There is no need to disassemble the module plate 13. After maintenance, the reverse operation can be performed to reset and fix it. During shutdown maintenance, the high-low elevation difference design facilitates the drainage of residual nitrification liquid in the pipeline, reducing sediment accumulation. Throughout the entire usage process, the integrated design of the module greatly simplifies the deployment process, the flexible operation and maintenance structure reduces operational difficulty, and the comprehensive protection and stable operating mechanism ensure the continuous and efficient advancement of the nitrification liquid return process, adapting to various application scenarios such as compact sites and emergency handling.

[0046] Example 2:

[0047] This embodiment provides a nitrification liquor recirculation module for wastewater treatment, which includes all the structures of the nitrification liquor recirculation module for wastewater treatment described in Embodiment 1.

[0048] like Figure 6As shown, this embodiment also includes a fresh air system, which includes a fresh air unit 71, an air supply duct 72, and an exhaust duct 72. The fresh air unit 71 is mounted on the module plate 13 located at the top of the module frame 11. The air supply outlet of the fresh air unit 71 is connected to the air supply outlet on the module plate 13 through the air supply duct 72, and the exhaust outlet of the fresh air unit 71 is connected to the exhaust outlet on the module plate 13 through the exhaust duct 72. By installing the fresh air unit 71 on the module plate 13 at the top of the module frame 11, and connecting the air supply duct 72 and exhaust duct 72 to the air supply and exhaust vents on the module plate 13 respectively, a complete ventilation circulation path is formed. This not only continuously supplies fresh air into the module frame 11, effectively diluting the hot air generated by the operation of electrical components and the heat dissipation of the pump body, as well as any trace amounts of corrosive gases that may be present, thus improving the internal air quality, but also accelerates air circulation, assisting the temperature and humidity control system in quickly regulating the internal environment, avoiding the accumulation of local high temperature and high humidity, and further improving the efficiency of temperature and humidity control. At the same time, the fresh air unit 71 installed at the top and the duct layout do not occupy the effective space inside the module frame 11, and do not interfere with the installation and maintenance of core components such as the nitration liquid return pump 2 and the electrical control cabinet 3. With the anti-corrosion coating on the surface of each component and the temperature and humidity control system, it not only ensures the stable operation of each functional component in the module frame 11 in a clean and well-ventilated environment, but also extends the service life of the components, further enhancing the environmental adaptability and long-term operational reliability of the nitration liquid return module.

[0049] Furthermore, in this embodiment, the modular frame 11, modular opening and closing door 12, modular plate 13, and the outer shell of the fresh air unit 71, the air supply duct 72, and the exhaust duct 73 of the fresh air system are all made of sheet metal. Sheet metal has both high strength and lightweight characteristics. While ensuring the structural stability of the modular frame 11 and the protective performance of each component, it significantly reduces the overall weight of the nitration liquid return module, reduces transportation and hoisting costs, and further enhances the equipment's flexible deployment capability in compact spaces and emergency response scenarios. At the same time, by setting the fresh air unit 71 on the modular plate 13 at the top of the modular frame 11, and connecting the air supply duct 72 and the exhaust duct 73 to the air supply and exhaust vents on the modular plate 13 respectively, a complete ventilation circulation path is formed, which can continuously supply fresh air into the modular frame 11, effectively... The system dilutes the hot air generated by the operation of electrical components and the heat dissipation of the pump body, as well as any trace amounts of corrosive gases, improving internal air quality and accelerating air circulation. This assists the temperature and humidity control system in quickly regulating the internal environment, preventing the accumulation of localized high temperature and humidity, and further improving the efficiency of temperature and humidity control. In addition, the top-mounted fresh air unit 71 and the sheet metal piping layout do not occupy the effective internal space of the module frame 11, and do not interfere with the installation and maintenance of core components such as the nitration liquid return pump 2 and the electrical control cabinet 3. Combined with the anti-corrosion coating on the surface of each component and the temperature and humidity control system, this ensures that the functional components within the module frame operate stably in a clean and well-ventilated environment, extends the service life of the components, and further enhances the environmental adaptability, lightweight advantages, and long-term operational reliability of the nitration liquid return module.

[0050] In the description of this utility model, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0051] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0052] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "beneath" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0053] In the description of this specification, the terms "one embodiment," "some embodiments," "embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present 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. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0054] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make modifications, alterations, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A nitrification liquor recirculation module for wastewater treatment, characterized in that, Includes housing (1), nitration liquid reflux pump (2), buffer assembly, leveling assembly, electrical control cabinet (3), monitoring assembly and temperature and humidity control system; The housing (1) includes a modular frame (11), a modular opening and closing door (12), and multiple modular panels (13). The modular opening and closing door (12) is installed on the front side of the modular frame (11), and multiple modular panels (13) are installed on the top and other sides of the modular frame (11); The module frame (11) is supported on the ground by a leveling component; the nitrification liquid return pump (2) is installed in the module frame (11) by a buffer component, the outlet of the nitrification liquid return pump (2) is connected to the outlet (131) opened on the module plate (13), and the inlet of the nitrification liquid return pump (2) is connected to the inlet (132) opened on the module plate (13); the electrical control cabinet (3), monitoring components and temperature and humidity control system are set in the module frame (11); The nitration liquid return pump (2), monitoring components and temperature and humidity control system are respectively connected to the electrical control cabinet (3).

2. The nitrification liquor recirculation module for wastewater treatment as described in claim 1, characterized in that, The module frame (11) is provided with two parallel main slide rails (14) that extend in the front and rear directions. The cushioning assembly includes a mounting plate (41) and at least four cushioning seats; The nitration liquid return pump (2) is installed on the mounting plate (41), and four buffer seats are installed at the bottom of the mounting plate (41). The four buffer seats are arranged in pairs and distributed front and back, and are slidably installed in the two main slide rails (14). When the modular opening and closing door (12) is closed, two buffer seats located in the same slide rail, one buffer seat abuts against the modular opening and closing door (12), and the other buffer seat abuts against the rear end of the slide rail.

3. The nitrification liquor recirculation module for wastewater treatment as described in claim 2, characterized in that, The module frame (11) is also equipped with an extension slide rail (15); One end of the extension slide rail (15) is hinged to the front end of the main slide rail (14). The extension slide rail (15) can rotate in the horizontal plane to connect with the front end of the main slide rail (14). The buffer seat can slide from the main slide rail (14) to the extension slide rail (15).

4. The nitrification liquor recirculation module for wastewater treatment as described in claim 2, characterized in that, The buffer seat includes a slider (42), a buffer spring (43), and a connecting plate (44); The middle part of the slider (42) has an installation groove, one end of the buffer spring (43) is set in the installation groove, and the other end of the buffer spring (43) is fixedly connected to the bottom of the installation plate (41) through the connecting plate (44).

5. The nitrification liquor recirculation module for wastewater treatment as described in claim 1, characterized in that, The leveling assembly includes a threaded rod (51), a connecting sleeve, and an anti-slip pad (52). One end of the threaded rod (51) is fixedly connected to the bottom of the module frame (11), and the other end of the threaded rod (51) is threadedly connected to the connecting sleeve. The free end of the connecting sleeve is supported on the ground by the anti-slip pad (52).

6. The nitrification liquor recirculation module for wastewater treatment as described in claim 5, characterized in that, The connecting sleeve includes a threaded sleeve (53) and a support sleeve (54); One end of the threaded cylinder (53) is rotatably connected to one end of the support cylinder (54), the threaded cylinder (53) is threadedly connected to the threaded rod (51), and the free end of the support cylinder (54) is supported on the ground by the anti-slip pad (52).

7. The nitrification liquor recirculation module for wastewater treatment as described in claim 1, characterized in that, The temperature and humidity control system includes a temperature and humidity sensor (61), a heating element (62), and a dehumidification element (63). The temperature and humidity sensor (61) is located at the bottom of the module frame (11), and the heating element (62) and the dehumidifying element (63) are located inside the module frame (11). Temperature and humidity sensor (61), heating element (62) and dehumidification element (63) are respectively connected to electrical control cabinet (3).

8. The nitrification liquor recirculation module for wastewater treatment as described in claim 1, characterized in that, The height of the outlet (131) on the module plate (13) is greater than the height of its inlet (132).

9. The nitrification liquor recirculation module for wastewater treatment as described in claim 1, characterized in that, The surface of the module frame (11) and the inner side of the module plate (13) are coated with an anti-corrosion coating.

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