Modular sewage treatment device and construction method thereof

Abstract

The application relates to the technical field of sewage treatment, in particular to a modularized sewage treatment device and a construction method thereof, which comprises a high liquid level alarm, a water pumping and discharging device, a low liquid level alarm, a supporting and fixing base, a supporting and fixing frame, a connecting pipeline, a detection and dosing device, a sewage treatment tank and a filtering treatment device. The supporting and fixing frame is fixedly installed on the supporting and fixing base through bolts, the sewage treatment tank is installed on the supporting and fixing frame, and the connecting pipeline is fixedly connected to the side end bottom of the sewage treatment tank. The detection and dosing device can automatically dose the sewage treatment tank, and can automatically supplement the liquid medicine. The sewage tank integrated frame and base form can conveniently realize hoisting and installation, and can protect the connecting base and reinforce the tank body. Meanwhile, the combination of the modularity and the factory prefabrication can comprehensively control the construction period, quality, cost and safety, and can improve the construction efficiency and quality.

Description

Technical Field

[0001] This invention relates to the field of wastewater treatment technology, specifically a modular wastewater treatment device and its construction method. Background Technology

[0002] For some hospitals, animal facilities, laboratories, or temporary isolation buildings, domestic or experimental wastewater is collected centrally into wastewater tanks (septic tanks) and then treated using a pre-disinfection + septic tank + dedicated vehicle pumping system. The advantages of this approach are short preparation and construction cycles, low investment (no need for subsequent specialized treatment), and the pre-treated wastewater is transported by dedicated vehicles for secondary specialized treatment to achieve detoxification and meet discharge standards before being discharged into the municipal sewage system. However, this treatment method requires dedicated vehicles for pumping and transportation, resulting in high operation and maintenance costs. The wastewater treatment tanks require chemical dosing, automatically administering chemicals based on the chlorine content tested within the tank to meet disinfection needs. Furthermore, the air from the wastewater treatment plant needs to be disinfected before being discharged at high altitude. However, the following problems may arise during the use of wastewater treatment equipment:

[0003] Insufficient pre-disinfection time is a major issue. Pre-disinfection time is generally no less than 1 hour, and in some cases, no less than 2 hours. Requirements stipulate that the residence time of the disinfectant in the disinfection tank should be >1.5 hours, with residual chlorine measured twice daily (residual chlorine value between 6.5 mg / L and 10 mg / L). If the residence time is less than 1 hour, the dosage needs to be increased to maintain a residual chlorine level above 10 mg / L. However, in reality, automatic dosing devices are lacking. Even with such devices, the dosage can only be set based on time, and cannot be automatically analyzed and judged based on the amount of sludge in the tank and the measured residual chlorine value, leading to inaccurate dosage and potentially substandard wastewater after a single treatment. Buried non-metallic tanks are partially submerged in rainwater. If the tank lacks dense sludge, it can float, causing connected pipes to break due to buoyancy and resulting in leakage. Metal tanks are expensive and difficult to transport. Ground-mounted wastewater tanks require floor space, and surrounding pipe connections are easily damaged, leading to leakage. After the tank is installed, connecting the surrounding pipelines is difficult. Due to the lack of corresponding control measures, there are deviations between the construction site and the design in terms of the pipeline length, segment length, and component connection from the reserved indoor sewage outlet to the outdoor tank. This makes it impossible to achieve a one-time accurate connection, resulting in potential leakage during use. Furthermore, the pipe cannot be firmly and securely fixed, and the discharged gas cannot be fully treated before being discharged. Therefore, a device and optimized construction method are needed to solve the above problems. Summary of the Invention

[0004] To address the problems in the prior art, this invention provides a modular wastewater treatment device and its construction method.

[0005] The technical solution adopted by this invention to solve its technical problem is: a modular sewage treatment device and its construction method, including a high-level alarm, a pumping and discharging device, a low-level alarm, a supporting and fixing base, a supporting and fixing frame, a connecting pipe, a detection and dosing device, a sewage treatment tank, and a filtration device. The supporting and fixing frame is fixedly installed on the supporting and fixing base by bolts. The sewage treatment tank is installed on the supporting and fixing frame. The connecting pipe is fixedly connected to the bottom side of the sewage treatment tank. The detection and dosing device is located in the middle of the outer side of the sewage treatment tank. The high-level alarm is located at the upper end of one end of the sewage treatment tank. The low-level alarm is located at the bottom of one end of the sewage treatment tank. The pumping and discharging device is located at the bottom side of the sewage treatment tank away from the detection and dosing device. The filtration device is located at the upper part of the end of the sewage treatment tank away from the high-level alarm.

[0006] Preferably, fixing hooks are symmetrically fixedly installed on both sides of the supporting frame, and a flexible steel strip is fixedly installed between the fixing hooks, with the flexible steel strip located outside the sewage treatment tank.

[0007] Preferably, the filtration device includes a first electric valve, a second electric valve, a diversion guide pipe, a support bracket, a fixed bracket, a buffer storage tank, a fifth electric valve, a purification tank, a connecting conveying pipe, a conveying guide frame, and a discharge conveying pipe. The discharge conveying pipe is fixedly connected to the support bracket, the buffer storage tank is fixedly connected to the bottom of the discharge conveying pipe, the fifth electric valve is fixedly connected to the bottom of the discharge conveying pipe and is located above the buffer storage tank, the fixed bracket is fixedly installed on the discharge conveying pipe and is located above the fifth electric valve. The fixed bracket communicates with the interior of the discharge conveying pipe, and the diversion guide pipe is fixedly installed... The first electric valve is fixedly installed on the discharge conveying pipe and located above the fixed bracket. The first electric valve is fixedly installed on the discharge conveying pipe and located above the diversion guide pipe. The conveying guide frame is fixedly connected to the upper part of the discharge conveying pipe and located above the first electric valve. The conveying guide frame is connected to the interior of the discharge conveying pipe.

[0008] Preferably, a third electric valve is symmetrically fixedly installed on the outer side of the bottom of the purification tank, and a conveying pipe and a discharge pipe are respectively fixedly connected to the outer side of the two third electric valves.

[0009] Preferably, the detection and dosing device includes a sealing cap, a chlorine detector, a dosing tank, a liquid level sensor, a support frame, and an air pump. The dosing tank is fixedly mounted on the support frame, the sealing cap is rotatably mounted on the upper part of one end of the dosing tank, the chlorine detector is fixedly connected to the inner end of the dosing tank, the air pump is fixedly mounted on the upper part of the support frame, and the liquid level sensor is fixedly mounted on the bottom of the dosing tank.

[0010] Preferably, a fourth electric valve is fixedly installed on the upper part of one end of the dosing tank, and a feeding conveying pipe is fixedly connected to the outer end of the fourth electric valve.

[0011] Preferably, the water pumping and discharge device includes a connecting pipe, a sewage filter, a U-shaped conveying pipe, a lift pump, and a supporting mounting base. The sewage filter is fixedly installed on the supporting mounting base, the connecting pipe is fixedly connected to the sewage filter, the lift pump is fixedly connected to the supporting mounting base, and the U-shaped conveying pipe is fixedly connected between the sewage filter and the lift pump.

[0012] Preferably, the support bracket is fixedly connected to the sewage treatment tank by bolts, and the bottom end of the discharge conveying pipe is connected to the upper end of the sewage treatment tank. The support frame plate is fixedly connected to the side end of the sewage treatment tank. The detection end of the chlorine detector is located inside the sewage treatment tank. The support mounting base is fixedly connected to the sewage treatment tank. The connecting pipe is fixedly inserted into the inside of the sewage treatment tank.

[0013] Preferably, a wastewater detector is fixedly installed on the U-shaped conveying pipe, a fourth electric valve is fixedly installed between the U-shaped conveying pipe and the lift pump, ultraviolet germicidal lamps are uniformly fixedly installed inside the discharge conveying pipe, and a baffle protection bucket is fixedly installed at the upper end of the discharge conveying pipe.

[0014] A construction method for a modular wastewater treatment device includes the following steps:

[0015] S1. Before construction, the sewage tank type is determined by the building's sewage discharge capacity. The pipes distributed on the foundation are prefabricated by the pipe factory and sent to the sewage tank manufacturer for connection. The pipes from the end user to the sewage tank are produced by the pipe factory based on the detailed pipe prefabrication drawings adjusted after on-site measurement. After being numbered, they are easy to install. Then, they can be installed on-site before the sewage tank and auxiliary components arrive.

[0016] S2. Use different types of steel to make a frame to connect the tank, determine the number and location of the lifting lugs, and install the lifting lugs on the frame;

[0017] S3. The above-mentioned pipeline also includes the test of the tightness of the connection between the outer sleeve of the double sleeve and the pipeline system. The pipeline interface has a leakage alarm device, and the connection between the sleeve and the pipeline is prevented by welding.

[0018] S4. After the sewage tank and its auxiliary base and the surrounding pipelines are prefabricated, they are assembled into a whole after acceptance and functional testing, and transported to the construction site. It is recommended that the tank and its auxiliary components be transported on springs or air cushions with vibration isolation effect. The tank and its auxiliary components are inspected on site. After the whole tank module is hoisted to the fixed position according to the hoisting plan, it is either ground-mounted or buried.

[0019] S5. After the sewage tank and its auxiliary base and pipeline are prefabricated, they are transported to the construction site for installation. At the same time, the system pipeline from the end of the connection device to the end of use is completed on site. Before connecting the last section of the system end to the end of the device module, repeated measurements are taken to avoid assembly problems caused by connection accuracy errors. The specific method is to prefabricate the last section of the connecting pipeline in the factory according to the actual situation after measurement, and then perform precise assembly, as well as install the leakage alarm device at the connection joint and weld the double sleeve.

[0020] S6. Connect the remaining pipeline system, perform stand-alone debugging and system functional debugging, mainly testing the various feedbacks of the tank, the conveying function of the pipeline system, and whether various alarm systems are normal.

[0021] In step S1 above, a U-bend and a shut-off valve can be added to the inlet pipe of the sewage tank to prevent sewage from flowing back into the preceding pipes. Specifically, after determining the sewage tank type and connecting tank body, and before installing the end pipe from the user to the sewage tank on site, a U-bend and a shut-off valve can be added.

[0022] When designing the inlet pipeline of the sewage tank, U-bends and gate valves should be planned and installed at appropriate locations. The U-bend should be placed at the front end of the inlet pipeline to form a closed space, effectively preventing backflow of external sewage. The gate valve should be installed after the U-bend to shut off the water flow when necessary. When producing the inlet pipeline, the pipeline manufacturer should prefabricate the pipeline section including the U-bend and gate valve according to the design drawings. Ensure that the size and shape of the U-bend meet the design requirements, and that the specifications and model of the gate valve also match the design. When installing the inlet pipeline on site, first install the pipeline section including the U-bend and gate valve according to the prefabricated drawings and numbering. Ensure that the connection between the U-bend and the pipeline is well sealed to prevent leakage. Simultaneously, the installation of the gate valve should ensure its flexible operation for easy future maintenance and repair. After the pipeline system is installed, the U-bend and gate valve should be tested. First, check whether the U-bend can effectively prevent backflow of sewage, then operate the gate valve to verify whether it can completely shut off the water flow, ensuring a rapid response in emergencies.

[0023] The U-bend design effectively prevents external contaminants from flowing back into the wastewater treatment system through the inlet pipe, protecting upstream pipes and equipment from contamination. The shut-off valve allows for quick water flow cut-off when needed, facilitating pipe and equipment maintenance, repair, or emergency handling. The addition of the U-bend and shut-off valve improves the overall safety of the wastewater treatment system, reducing the risk of equipment damage and environmental pollution caused by backflow. The shut-off valve allows for individual maintenance and repair of the inlet pipe without disassembling the entire piping system, improving system maintainability. By adding a U-bend and shut-off valve to the inlet pipe of the wastewater tank during construction, not only is the operational efficiency and safety of the wastewater treatment unit improved, but future maintenance and repair work is also facilitated, making it a highly valuable improvement.

[0024] The beneficial effects of this invention are:

[0025] I. This invention features a detection and dosing device that automatically adds chemicals to the wastewater treatment tank and replenishes the solution. A filtration device purifies the discharged gas before release, and a pumping device prevents toxic liquids from leaking out of the inlet, achieving full automation. The wastewater treatment tank provides various alarms and warnings, including tank level sensors, waste weight sensors, and chlorine level sensors, enhancing system functionality and safety.

[0026] Second, compared to buried sewage tanks, this invention adds a steel support base, which prevents floating and facilitates better fixation and placement of the sewage treatment tank. Compared to ground-mounted sewage tanks, the pipes connecting the sewage tank in this invention all use a double-sleeve design, and a leakage alarm device is added. This not only prevents damage to the pipeline system but also detects leaks promptly, protecting the surrounding environment and personnel safety.

[0027] Third, the integrated frame and base of the sewage tank provided by this invention facilitates hoisting and installation, protects the connecting base, and strengthens the tank body. At the same time, the combination of modularity and factory prefabrication allows for comprehensive control over the installation period, quality, cost, and safety, thereby increasing construction efficiency and quality. Attached Figure Description

[0028] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0029] Figure 1 This is a three-dimensional structural diagram of the main body from a frontal perspective in this invention;

[0030] Figure 2 This is a side view of the three-dimensional structure of the main body in this invention;

[0031] Figure 3 This is a schematic diagram of the bottom structure of the sewage treatment tank in this invention;

[0032] Figure 4 This is a schematic diagram of the upper end structure of the support fixing plate in this invention;

[0033] Figure 5 This is a schematic diagram of the filtration device in this invention;

[0034] Figure 6 This is a schematic diagram of the bottom structure of the filtration device in this invention;

[0035] Figure 7 This is a schematic diagram of the detection and dosing device in this invention;

[0036] Figure 8 This is a schematic diagram of the water pumping and discharge device in this invention.

[0037] Figure 9 This is a schematic diagram of the double-tube structure in this invention.

[0038] In the diagram: 1-Flexible steel strip, 2-High liquid level alarm, 3-Pumping and discharging device, 4-Low liquid level alarm, 5-Supporting and fixing base, 6-Supporting and fixing frame, 7-Fixing hook, 8-Connecting pipe, 9-Detection and dosing device, 10-Sewage treatment tank, 11-Filtration treatment device, 12-Baffle protection hopper, 13-First electric valve, 14-Second electric valve, 15-Diverter guide pipe, 16-Support bracket, 17-Fixing bracket, 18-Buffer storage tank, 19-Fifth electric valve, 20-Purification treatment tank, 21-Third electric valve, 22-Transfer pipe, 23-Discharge pipe. 24-Connecting conveying pipe, 25-Conveying guide frame, 26-Discharge conveying pipe, 27-Ultraviolet germicidal lamp tube, 28-Fourth electric valve, 29-Sealing cover, 30-Chlorine detector, 31-Dosing tank, 32-Feeding conveying pipe, 33-Level sensor, 34-Supporting frame plate, 35-Air pump, 36-Connecting pipe body, 37-Sewage filter, 38-U-shaped conveying pipe, 39-Lift pump, 40-Fifth electric valve, 41-Sewage detector, 42-Supporting mounting base, 43-Outer pipe, 44-Inner pipe, 45-Inner pipe weld, 46-Sensor, 47-Outer pipe weld. Detailed Implementation

[0039] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0040] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of this application described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0041] The invention will be further described below with reference to the accompanying drawings.

[0042] Example 1

[0043] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, a modular sewage treatment device and its construction method according to the present invention include a high-level alarm 2, a pumping and discharging device 3, a low-level alarm 4, a supporting and fixing base 5, a supporting and fixing frame 6, a connecting pipe 8, a detection and dosing device 9, a sewage treatment tank 10, and a filtration and treatment device 11. The supporting and fixing frame 6 is fixedly mounted on the supporting and fixing base 5 by bolts; the sewage treatment tank 10 is mounted on the supporting and fixing frame 6; the connecting pipe 8 is fixedly connected to the bottom side of the sewage treatment tank 10; the detection and dosing device 9 is located in the middle of the outer side of the sewage treatment tank 10; and the high-level alarm 2 is... At one end of the sewage treatment tank 10, a low level alarm 4 is installed at the bottom of one end of the sewage treatment tank 10, a water pumping and discharging device 3 is installed at the bottom of the side end of the sewage treatment tank 10 away from the detection and dosing device 9, and a filtration device 11 is installed at the top of the end of the sewage treatment tank 10 away from the high level alarm 2. The detection and dosing device 9 can automatically add chemicals to the sewage treatment tank 10 and can automatically replenish the chemical solution. The filtration device 11 can purify the discharged gas before it is discharged. The water pumping and discharging device 3 can prevent toxic liquids from flowing out from the water inlet.

[0044] Fixing hooks 7 are symmetrically fixed on both sides of the supporting frame 6, and flexible steel strips 1 are fixedly installed between the fixing hooks 7, with the flexible steel strips 1 located outside the sewage treatment tank 10.

[0045] like Figure 5 and Figure 6 As shown, the filtration device 11 includes a first electric valve 13, a second electric valve 14, a diversion guide pipe 15, a support bracket 16, a fixed bracket 17, a buffer storage tank 18, a fifth electric valve 19, a purification tank 20, a connecting conveying pipe 24, a conveying guide frame 25, and an discharge conveying pipe 26. The discharge conveying pipe 26 is fixedly connected to the support bracket 16, the buffer storage tank 18 is fixedly connected to the bottom of the discharge conveying pipe 26, the fifth electric valve 19 is fixedly connected to the bottom of the discharge conveying pipe 26, and the fifth electric valve 19 is located above the buffer storage tank 18. The fixed bracket 17 is fixedly installed on the discharge conveying pipe 26. Above, the fixed bracket 17 is located above the fifth electric valve 19, and the fixed bracket 17 is internally connected to the discharge conveying pipe 26. The diversion guide pipe 15 is fixedly installed on the discharge conveying pipe 26, and the diversion guide pipe 15 is located above the fixed bracket 17. The purification tank 20 is evenly fixedly connected to the outer end of the fixed bracket 17, and the diversion guide pipe 15 is internally connected to the discharge conveying pipe 26. The diversion guide pipe 15 is internally connected to the purification tank 20. The second electric valve 14 is fixedly installed between the diversion guide pipe 15 and the discharge conveying pipe 26. The first electric valve 13 is fixedly installed on the discharge conveying pipe 26, and the first electric valve 14 is fixedly installed between the diversion guide pipe 15 and the discharge conveying pipe 26. Located above the diversion guide pipe 15, the conveying guide frame 25 is fixedly connected to the upper part of the discharge conveying pipe 26, and the conveying guide frame 25 is located above the first electric valve 13. The conveying guide frame 25 is internally connected to the discharge conveying pipe 26. The gas inside the sewage treatment tank 10 can be discharged through the discharge conveying pipe 26. When the gas inside the sewage treatment tank 10 is discharged into the discharge conveying pipe 26, the fifth electric valve 19 closes, and a large amount of gas enters the buffer storage tank 18. At this time, the exhaust gas detector located inside the bottom of the discharge conveying pipe 26 detects the composition of the gas, and then the fifth electric valve... 19. The first electric valve 13 is closed, allowing gas to flow into the diversion guide pipe 15. Then, based on the detected gas composition, the second electric valve 14 at the corresponding position is opened by the external controller, allowing the gas to flow through the diversion guide pipe 15 into the corresponding purification tank 20. At this time, the corresponding treatment chemical reagent in the purification tank 20 can treat the gas. After treatment, the gas is transported through the connecting conveying pipe 24 to the conveying guide frame 25 and the discharge conveying pipe 26 for discharge. When it is detected that the gas transported by the discharge conveying pipe 26 does not contain harmful components, it is directly discharged through the discharge conveying pipe 26.

[0046] A third electric valve 21 is symmetrically fixedly installed on the outer side of the bottom of the purification tank 20. The outer sides of the two third electric valves 21 are respectively fixedly connected to the conveying pipe 22 and the discharge pipe 23.

[0047] like Figure 7 As shown, the detection and dosing device 9 includes a sealing cover 29, a chlorine detector 30, a dosing tank 31, a liquid level sensor 33, a support frame 34, and an air pump 35. The dosing tank 31 is fixedly installed on the support frame 34. The sealing cover 29 is rotatably installed on the upper part of one end of the dosing tank 31. The chlorine detector 30 is fixedly connected to the inner end of the dosing tank 31. The air pump 35 is fixedly installed on the upper end of the support frame 34. The liquid level sensor 33 is fixedly installed at the bottom of the dosing tank 31. The chlorine detector 30 can detect the chlorine content inside the wastewater treatment tank 10, and the controller controls the air pump 35 to automatically add the chemical solution in the dosing tank 31 into the wastewater treatment tank 10. The liquid level sensor 33 can detect the amount of chemical solution inside the dosing tank 31. The chemical solution can be added into the dosing tank 31 by screwing on the sealing cover 29. The chemical solution can be automatically added and replenished to the dosing tank 31 by the feed delivery pipe 32 and the activation of the fourth electric valve 28.

[0048] A fourth electric valve 28 is fixedly installed on the upper part of one end of the dosing tank 31, and a feeding conveying pipe 32 is fixedly connected to the outer end of the fourth electric valve 28.

[0049] like Figure 8 As shown, the water pumping and discharge device 3 includes a connecting pipe 36, a sewage filter 37, a U-shaped conveying pipe 38, a booster pump 39, and a support mounting base 42. The sewage filter 37 is fixedly installed on the support mounting base 42, the connecting pipe 36 is fixedly connected to the sewage filter 37, the booster pump 39 is fixedly connected to the support mounting base 42, and the U-shaped conveying pipe 38 is fixedly connected between the sewage filter 37 and the booster pump 39. The sewage filter 37 and the booster pump 39 are installed at the water inlet to allow water to be pumped in when the minimum liquid level is reached. The U-shaped conveying pipe 38 serves to prevent backflow and prevent toxic liquids from flowing out of this outlet. Furthermore, the sewage filter 37 can intercept impurities and facilitate their removal.

[0050] The support bracket 16 is fixedly connected to the sewage treatment tank 10 by bolts, and the bottom end of the discharge and conveying pipe 26 is connected to the upper end of the sewage treatment tank 10. The support frame plate 34 is fixedly connected to the side end of the sewage treatment tank 10. The detection end of the chlorine detector 30 is located inside the sewage treatment tank 10. The support mounting base 42 is fixedly connected to the sewage treatment tank 10. The connecting pipe 36 is fixedly inserted into the inside of the sewage treatment tank 10, serving the function of connection and conveying.

[0051] like Figure 9As shown, in the modular sewage treatment device of the present invention, the pipe design connecting the sewage tank adopts an innovative double-pipe form. This design not only enhances the protection capability of the pipeline system, but also integrates a leakage alarm device, thereby ensuring the safety and reliability of the system on multiple levels.

[0052] The outer tube 43, serving as the outer protective layer of the double-tube structure, is made of robust and durable materials, effectively resisting potential environmental impacts such as physical shocks, ultraviolet radiation, and chemical corrosion. The design of the outer tube ensures the stability and integrity of the internal piping while also providing an additional safety barrier for the inner tube 44.

[0053] Inner tube 44 is the actual channel for conveying sewage or other fluids. Its materials and design are optimized for the characteristics of sewage treatment to ensure high-efficiency fluid transport performance during long-term use. The smooth inner wall of the inner tube reduces fluid resistance and ensures smooth operation of the sewage treatment process.

[0054] The outer pipe weld 47 is a key structural element connecting the outer and inner pipes. Advanced welding technology ensures the robustness and sealing of the pipe connection. The precise design and manufacturing process of the outer pipe weld 47 guarantee the stability of the double-pipe structure, preventing potential leaks and corrosion, thereby ensuring the safe operation of the entire wastewater treatment system.

[0055] Sensor 46, the leak alarm device, is a key innovation in the double-pipe design. These sensors, installed at critical locations within the double pipe, monitor pressure, temperature, and other key parameters inside the pipeline in real time. In the event of a leak or other anomaly, the sensors immediately issue an alarm, notifying operators to conduct timely inspection and repair. Through precise sensor monitoring, the specific location of the leak can be quickly pinpointed, allowing for necessary repair or replacement measures, significantly reducing the risk of environmental pollution and ensuring the safety of the surrounding environment and personnel.

[0056] The inner pipe weld 45 is an important component of the inner pipe 44, responsible for tightly connecting all parts of the inner pipe to ensure the integrity and sealing of the entire piping system. The inner pipe weld 45 uses the same advanced welding technology as the outer pipe weld 47, ensuring the strength and sealing of the weld joint and preventing fluid leakage and potential environmental pollution.

[0057] The design of the inner pipe weld 45 also pays close attention to detail to accommodate the various challenges that may be encountered in the wastewater treatment process. The weld surface is treated to be very smooth to reduce resistance to fluid flow, ensuring smooth fluid flow, and also reducing maintenance costs, as the smooth weld surface does not easily accumulate dirt, reducing the difficulty of cleaning and maintenance.

[0058] In addition, the inner tube weld 45 was designed with durability and reliability in mind, using corrosion-resistant materials and undergoing special anti-corrosion treatment to withstand the erosion of chemicals and microorganisms that may be present in the wastewater treatment environment.

[0059] The double-pipe design in this invention, combined with the intelligent monitoring of the leakage alarm device, not only improves the safety and reliability of the sewage treatment system, but also significantly enhances the maintenance efficiency and environmental protection capabilities of the pipeline system. The working principle of Example 1 is as follows: During use, the high-level alarm 2 detects the highest liquid level in the sewage treatment tank 10 to prevent blockage or excessive flow, generally around 80% of the volume. The low-level alarm 4 detects the lowest liquid level in the sewage treatment tank 10. Two branch pipes at the bottom monitor the low-level warning and the lowest liquid level alarm respectively. If there is no response to the lowest liquid level alarm for 30 minutes, water is automatically pumped into the tank to prevent excessive buoyancy. The connecting pipe 8 only requires connecting the pipes near the prefabricated tank to the on-site pipe interface, reducing on-site construction time. The supporting frame 6 provides stable support for the sewage treatment tank 10 during installation.

[0060] During use, the chlorine content inside the sewage treatment tank 10 can be detected by the chlorine detector 30, and the air pump 35 is controlled by the controller to automatically add the chemical solution in the dosing tank 31 into the sewage treatment tank 10. The liquid level sensor 33 can detect the amount of chemical solution inside the dosing tank 31. Chemical solution can be added into the dosing tank 31 by screwing on the sealing cap 29. Chemical solution can be automatically added and replenished into the dosing tank 31 by the feeding conveying pipe 32 and the fourth electric valve 28.

[0061] The gas inside the wastewater treatment tank 10 can be discharged through the discharge pipe 26. When the gas inside the wastewater treatment tank 10 is discharged into the discharge pipe 26, the fifth electric valve 19 closes, and a large amount of gas enters the buffer storage tank 18. At this time, the exhaust gas detector installed at the bottom of the discharge pipe 26 detects the composition of the gas. Then, the fifth electric valve 19 opens and the first electric valve 13 closes, allowing the gas to flow into the diversion guide pipe 15. Then, based on the detected composition of the gas, the external controller controls the second electric valve 14 at the corresponding position to open, allowing the gas to flow into the buffer storage tank 18 through the diversion guide pipe 15. The gas is treated in the purification tank 20 at the appropriate location. The corresponding chemical reagent in the purification tank 20 can then treat the gas. After treatment, the gas is transported through the connecting conveying pipe 24 to the conveying guide frame 25 and the discharge conveying pipe 26 for discharge. When the gas transported through the discharge conveying pipe 26 is detected to meet the emission standards, it is discharged directly through the discharge conveying pipe 26. A sewage filter 37 and a lift pump 39 are installed at the water inlet to fill the inlet with water when the minimum liquid level is met. The U-shaped conveying pipe 38 serves to prevent backflow and prevent toxic liquids from flowing out of this outlet. The sewage filter 37 can also intercept impurities and facilitate the removal of impurities.

[0062] A construction method for a modular wastewater treatment device includes the following steps:

[0063] S1. Before construction, the sewage tank type is determined by the building's sewage discharge capacity. The pipes distributed on the foundation are prefabricated by the pipe factory and sent to the sewage tank manufacturer for connection. The pipes from the end user to the sewage tank are produced by the pipe factory based on the detailed pipe prefabrication drawings adjusted after on-site measurement. After being numbered, they are easy to install. Then, they can be installed on-site before the sewage tank and auxiliary components arrive.

[0064] S2. Use different types of steel to make a frame to connect the tank, determine the number and location of the lifting lugs, and install the lifting lugs on the frame;

[0065] S3. The above-mentioned pipeline also includes the test of the tightness of the connection between the outer sleeve of the double sleeve and the pipeline system. The pipeline interface has a leakage alarm device, and the connection between the sleeve and the pipeline is prevented by welding.

[0066] S4. After the sewage tank and its auxiliary base and the surrounding pipelines are prefabricated, they are assembled into a whole after acceptance and functional testing, and transported to the construction site. It is recommended that the tank and its auxiliary components be transported on springs or air cushions with vibration isolation effect. The tank and its auxiliary components are inspected on site. After the whole tank module is hoisted to the fixed position according to the hoisting plan, it is installed on the ground or buried.

[0067] S5. After the sewage tank and its auxiliary base and pipeline are prefabricated, they are transported to the construction site for installation. At the same time, the system pipeline from the end of the connection device to the end of use is completed on site. Before connecting the last section of the system end to the end of the device module, repeated measurements are taken to avoid assembly problems caused by connection accuracy errors. The specific method is to prefabricate the last section of the connecting pipeline in the factory according to the actual situation after measurement, and then perform precise assembly, as well as install the leakage alarm device at the connection joint and weld the double sleeve.

[0068] S6. Connect the remaining pipeline system, perform stand-alone debugging and system functional debugging, mainly testing the various feedbacks of the tank, the conveying function of the pipeline system, and whether various alarm systems are normal.

[0069] In step S1 above, a U-bend and a shut-off valve can be added to the inlet pipe of the sewage tank to prevent sewage from flowing back into the preceding pipes. Specifically, after determining the sewage tank type and connecting tank body, and before installing the end pipe from the user to the sewage tank on site, a U-bend and a shut-off valve can be added.

[0070] When designing the inlet pipeline of the sewage tank, U-bends and gate valves should be planned and installed at appropriate locations. The U-bend should be placed at the front end of the inlet pipeline to form a closed space, effectively preventing backflow of external sewage. The gate valve should be installed after the U-bend to shut off the water flow when necessary. When producing the inlet pipeline, the pipeline manufacturer should prefabricate the pipeline section including the U-bend and gate valve according to the design drawings. Ensure that the size and shape of the U-bend meet the design requirements, and that the specifications and model of the gate valve also match the design. When installing the inlet pipeline on site, first install the pipeline section including the U-bend and gate valve according to the prefabricated drawings and numbering. Ensure that the connection between the U-bend and the pipeline is well sealed to prevent leakage. Simultaneously, the installation of the gate valve should ensure its flexible operation for easy future maintenance and repair. After the pipeline system is installed, the U-bend and gate valve should be tested. First, check whether the U-bend can effectively prevent backflow of sewage, then operate the gate valve to verify whether it can completely shut off the water flow, ensuring a rapid response in emergencies.

[0071] The U-bend design effectively prevents external contaminants from flowing back into the wastewater treatment system through the inlet pipe, protecting upstream pipes and equipment from contamination. The shut-off valve allows for quick water flow cut-off when needed, facilitating pipe and equipment maintenance, repair, or emergency handling. The addition of the U-bend and shut-off valve improves the overall safety of the wastewater treatment system, reducing the risk of equipment damage and environmental pollution caused by backflow. The shut-off valve allows for individual maintenance and repair of the inlet pipe without disassembling the entire piping system, improving system maintainability. By adding a U-bend and shut-off valve to the inlet pipe of the wastewater tank during construction, not only is the operational efficiency and safety of the wastewater treatment unit improved, but future maintenance and repair work is also facilitated, making it a highly valuable improvement.

[0072] Example 2

[0073] Based on Example 1, such as Figure 8 As shown, a wastewater detector 41 is fixedly installed on the U-shaped conveying pipe 38, a fourth electric valve is fixedly installed between the U-shaped conveying pipe 38 and the lift pump 39, ultraviolet germicidal lamps 27 are uniformly fixedly installed inside the discharge conveying pipe 26, and a baffle hopper 12 is fixedly installed at the upper end of the discharge conveying pipe 26.

[0074] In implementing this embodiment, since a wastewater detector 41 is installed on the U-shaped conveying pipe 38, the wastewater conveyed and present in the U-shaped conveying pipe 38 can be detected. When toxic components are detected in the wastewater in the U-shaped conveying pipe 38, the fifth electric valve 40 can be controlled to close, and the lift pump 39 can be stopped. At this time, the wastewater containing toxic components will not be discharged from the lift pump 39, and can be further processed in the wastewater treatment tank 10. Furthermore, the U-shaped conveying pipe 38 and the fifth electric valve 40 can prevent sewage from flowing back into the preceding pipeline.

[0075] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A modular wastewater treatment device, comprising a high-level alarm (2), a pumping and discharging device (3), a low-level alarm (4), a supporting and fixing base (5), a supporting and fixing frame (6), a connecting pipe (8), a detection and dosing device (9), a wastewater treatment tank (10), and a filtration and treatment device (11), characterized in that: The support frame (6) is fixedly installed on the support base (5) by bolts. The sewage treatment tank (10) is installed on the support frame (6). The connecting pipe (8) is fixedly connected to the bottom side of the sewage treatment tank (10). The detection and dosing device (9) is located in the middle of the outer side of the sewage treatment tank (10). The high liquid level alarm (2) is located at the upper end of one end of the sewage treatment tank (10). The low liquid level alarm (4) is located at the bottom of one end of the sewage treatment tank (10). The pumping and discharging device (3) is located at the bottom side of the sewage treatment tank (10) away from the detection and dosing device (9). The filtration device (11) is located at the upper part of the end of the sewage treatment tank (10) away from the high liquid level alarm (2). Fixing hooks (7) are symmetrically fixed on both sides of the supporting frame (6), and a flexible steel strip (1) is fixed between the fixing hooks (7), and the flexible steel strip (1) is located outside the sewage treatment tank (10). The filtration device (11) includes a first electric valve (13), a second electric valve (14), a diversion guide pipe (15), a support bracket (16), a fixed bracket (17), a buffer storage tank (18), a fifth electric valve (19), a purification tank (20), a connecting conveying pipe (24), a conveying guide frame (25), and an exhaust conveying pipe (26). The exhaust conveying pipe (26) is fixedly connected to the support bracket (16). The buffer storage tank (18) is fixedly connected to the bottom of the exhaust conveying pipe (26). The fifth electric valve (19) is fixedly connected to the bottom of the exhaust conveying pipe (26) and is located above the buffer storage tank (18). The fixed bracket (17) is fixedly installed on the exhaust conveying pipe (26) and is located above the fifth electric valve (19). The fixed bracket (17) communicates with the interior of the exhaust conveying pipe (26). The diversion guide... The pipe (15) is fixedly installed on the discharge conveying pipe (26), and the diversion guide pipe (15) is located above the fixed bracket (17). The purification tank (20) is uniformly fixedly connected to the outer end of the fixed bracket (17). The diversion guide pipe (15) is connected to the interior of the discharge conveying pipe (26). The diversion guide pipe (15) is connected to the interior of the purification tank (20). The second electric valve (14) is fixedly installed between the diversion guide pipe (15) and the discharge conveying pipe (26). The first electric valve (13) is fixedly installed on the discharge conveying pipe (26), and the first electric valve (13) is located above the diversion guide pipe (15). The conveying guide frame (25) is fixedly connected to the upper part of the discharge conveying pipe (26), and the conveying guide frame (25) is located above the first electric valve (13). The conveying guide frame (25) is connected to the interior of the discharge conveying pipe (26). The bottom outer side of the purification tank (20) is symmetrically and fixedly equipped with a third electric valve (21), and the outer side of the two third electric valves (21) are respectively fixedly connected with a conveying pipe (22) and a discharge pipe (23). The detection and dosing device (9) includes a sealing cover (29), a chlorine detector (30), a dosing tank (31), a liquid level sensor (33), a support frame (34), and an air pump (35). The dosing tank (31) is fixedly installed on the support frame (34). The sealing cover (29) is rotatably installed on the upper part of one end of the dosing tank (31). The chlorine detector (30) is fixedly connected to the inner end of the dosing tank (31). The air pump (35) is fixedly installed on the upper end of the support frame (34). The liquid level sensor (33) is fixedly installed on the bottom of the dosing tank (31).

2. The modular wastewater treatment device according to claim 1, characterized in that: A fourth electric valve (28) is fixedly installed on the upper part of one end of the dosing tank (31), and a feeding conveying pipe (32) is fixedly connected to the outer end of the fourth electric valve (28).

3. A modular wastewater treatment device according to claim 2, characterized in that: The pumping and discharging device (3) includes a connecting pipe (36), a sewage filter (37), a U-shaped conveying pipe (38), a lift pump (39), and a support mounting base (42). The sewage filter (37) is fixedly installed on the support mounting base (42), the connecting pipe (36) is fixedly connected to the sewage filter (37), the lift pump (39) is fixedly connected to the support mounting base (42), and the U-shaped conveying pipe (38) is fixedly connected between the sewage filter (37) and the lift pump (39).

4. A modular wastewater treatment device according to claim 3, characterized in that: The support bracket (16) is fixedly connected to the sewage treatment tank (10) by bolts, and the bottom end of the discharge conveying pipe (26) is connected to the upper end of the sewage treatment tank (10). The support frame plate (34) is fixedly connected to the side end of the sewage treatment tank (10). The detection end of the chlorine detector (30) is located inside the sewage treatment tank (10). The support mounting base (42) is fixedly connected to the sewage treatment tank (10). The connecting pipe (36) is fixedly inserted into the inside of the sewage treatment tank (10).

5. A modular wastewater treatment device according to claim 4, characterized in that: A wastewater detector (41) is fixedly installed on the U-shaped conveying pipe (38). A sixth electric valve (40) is fixedly installed between the U-shaped conveying pipe (38) and the booster pump (39). Ultraviolet germicidal lamp tubes (27) are uniformly fixedly installed inside the discharge conveying pipe (26). A baffle protection bucket (12) is fixedly installed at the upper end of the discharge conveying pipe (26).

6. A construction method for a modular sewage treatment device, employing the modular sewage treatment device described in claim 5, characterized in that, It includes the following steps: S1. Before construction, determine the type of sewage treatment tank based on the building's sewage discharge capacity, connect the tank body, prefabricate the pipes distributed on the foundation, adjust and refine the pipe prefabrication drawings, produce pipes of different sections, number them for easy installation, and then install them on the construction site. S2. Use different types of steel to make a frame to connect the tank, determine the number and location of the lifting lugs, and install the lifting lugs on the frame; S3. Test the tightness of the connection between the outer sleeve of the double sleeve and the piping system. The pipe interface has a leakage alarm device, and the connection between the sleeve and the pipe is made by welding to prevent leakage. S4. After the sewage treatment tank and its auxiliary base and the pipelines around the base are prefabricated, they are assembled into a whole after acceptance and functional testing, and transported to the construction site. The tank and its auxiliary components are transported on springs or air cushions with vibration isolation effect. The tank and its auxiliary components are inspected on site. According to the hoisting plan, the whole tank module is hoisted to the fixed position and then installed on the ground or buried. S5. After the sewage treatment tank and its auxiliary base and pipeline are prefabricated, they are transported to the construction site for installation. At the same time, the system pipeline from the end of the connection device to the end of the user is completed. Before connecting the last section of the system end to the end of the device module, repeated measurements are taken to avoid assembly problems caused by connection accuracy errors. The specific method is to prefabricate the last section of the connecting pipeline in the factory according to the actual situation after measurement, and then perform precise assembly, as well as install the leakage alarm device at the connection joint and weld the double sleeve. S6. Connect the pipeline system, perform single-unit debugging and system functional debugging, mainly testing the various feedbacks of the tank, the conveying function of the pipeline system, and the performance of various alarm systems.

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