Integrated buried sewage treatment equipment

Abstract

The application relates to an integrated underground sewage treatment equipment which comprises a shell, a first oxidation chamber, a second oxidation chamber, a sedimentation chamber, a disinfection chamber and an equipment chamber; the sedimentation chamber comprises a dosing area, a sedimentation area, a standing area and a rotary type sewage cleaning mechanism; a transverse partition plate is arranged between the baffle and the sedimentation chamber; a conical sediment guiding seat is arranged at the bottom of the sedimentation area, the lower part of the baffle is communicated with the conical sediment guiding seat, and a sewage discharge port is arranged at the middle part of the downstream of the conical sediment guiding seat; the rotary type sewage cleaning mechanism comprises a transfer shaft, a scraper frame, a spiral conveying piece and a power assembly; a discharge port is arranged at the lower part of the sedimentation area, the upper part and the lower part of the transfer shaft are rotatably installed on a central seat and in the sewage discharge port respectively, and the scraper frame is fixed on the transfer shaft; the spiral conveying piece is arranged at the lower part of the transfer shaft; the rotary type sewage cleaning mechanism arranged in the sedimentation area can not only improve the sedimentation effect and the utilization rate of the medicament, but also reduce the loss of effective medicament components in the sludge, thereby reducing the subsequent treatment cost.

Description

Technical Field

[0001] This invention relates to the field of wastewater treatment technology, specifically to an integrated underground wastewater treatment device. Background Technology

[0002] With the acceleration of urbanization and the increasing demands for environmental protection, wastewater treatment has become an indispensable part of social development and environmental protection. Traditional wastewater treatment methods, such as centralized wastewater treatment plants, while offering good treatment results, require large land areas, have high construction costs, and are subject to stringent geographical requirements. Therefore, underground wastewater treatment equipment, as a new type of wastewater treatment equipment that occupies less space, has high treatment efficiency, and low operating costs, is gradually gaining popularity.

[0003] Underground sewage treatment equipment typically buries the entire system underground, allowing the surface above to be used for landscaping or other purposes, saving space and beautifying the environment. Furthermore, because the equipment is buried underground, it significantly reduces the impact of noise and odor on the surrounding environment, improving residents' quality of life. However, some issues still exist with current underground sewage treatment equipment on the market regarding sewage flow and treatment methods.

[0004] To improve sedimentation efficiency, flocculants are typically added to sedimentation tanks. However, due to the structural design of the sedimentation chamber and limitations imposed by water flow conditions, the flocculants often fail to fully contact and mix with the water after secondary oxidation, resulting in poor flocculation and reduced sedimentation efficiency. This not only affects the effluent quality but also increases the burden on subsequent treatment units.

[0005] Sedimentation chambers primarily rely on inclined tube structures to achieve solid-liquid separation. While this sedimentation method is simple and easy to implement, its efficiency is affected by various factors such as water flow conditions and particle properties, easily leading to problems like incomplete sedimentation or sediment floating. Furthermore, the reliance on a single sedimentation method limits the potential for improving sedimentation efficiency.

[0006] During the sedimentation process, sludge gradually accumulates at the bottom of the sedimentation tank. Over time, this sludge buildup accumulates, occupying the effective volume of the sedimentation tank and reducing sedimentation efficiency. Furthermore, sludge buildup can affect the stable operation of the sedimentation tank and the quality of the effluent. To address this issue, regular cleaning is required, which not only increases maintenance costs but may also disrupt the normal operation of the treatment system.

[0007] Due to sludge accumulation and the complex structure at the bottom of sedimentation tanks, thorough cleaning is often difficult, leaving blind spots. Furthermore, the cleaning process may damage the sedimentation tank structure, further affecting treatment efficiency. Therefore, how to effectively clean and maintain sedimentation tanks and reduce the impact of sludge accumulation on treatment effectiveness is one of the urgent problems to be solved in existing technologies.

[0008] Therefore, it is necessary to study an integrated underground sewage treatment equipment. Summary of the Invention

[0009] Therefore, the purpose of this invention is to provide an integrated underground sewage treatment equipment, which effectively solves the problems of the simple configuration structure of the sedimentation chamber in the prior art. It only configures the inclined tube structure in the sedimentation chamber and improves the sedimentation effect by adding flocculants to the sedimentation tank. However, the agent is difficult to fully contact the water after secondary oxidation for sedimentation, resulting in poor sedimentation effect and a single sedimentation method. At the same time, sludge is easy to adhere to the bottom of the sedimentation tank and easily forms accumulation, which requires regular cleaning and causes trouble.

[0010] To achieve the above objectives, the technical solution adopted by the present invention is as follows: an integrated underground sewage treatment device, comprising a shell, a first oxidation chamber, a second oxidation chamber, a sedimentation chamber, a disinfection chamber, and an equipment room; the shell is provided with multiple layers of partitions at intervals, dividing the internal space of the shell into the first oxidation chamber, the second oxidation chamber, the sedimentation chamber, the disinfection chamber, and the equipment room; the sedimentation chamber includes a dosing area, a sedimentation area, a settling area, and a rotary cleaning mechanism; a baffle is provided vertically inside the sedimentation chamber, and the baffle and the inner wall of the sedimentation chamber form a dosing area; the second oxidation chamber is connected to the dosing area through an overflow pipe, and a dosing pipe is provided in the dosing area;

[0011] A horizontal partition is provided between the baffle and the sedimentation chamber, which divides the sedimentation chamber into a lower sedimentation zone and an upper settling zone. A conical sludge guide seat is provided at the bottom of the sedimentation zone. The lower part of the baffle and the conical sludge guide seat have a communication port, and a sewage outlet is provided at the middle of the downstream of the conical sludge guide seat.

[0012] The rotary cleaning mechanism includes a central shaft, a scraper frame, a spiral conveyor, and a power assembly; a central seat is provided in the middle of the transverse partition, and the central seat is fixed to the inner wall of the baffle and sedimentation chamber by a connecting rod.

[0013] A discharge port is provided at the lower part of the sedimentation zone. The upper and lower parts of the central rotating shaft are rotatably mounted on the central seat and in the sewage discharge port, respectively. The scraper frame is fixed on the central rotating shaft and fits snugly with the conical mud guide seat. The spiral conveyor is arranged at the lower part of the central rotating shaft and is located in the sewage discharge port. The lower part of the sewage discharge port is connected to a sewage discharge pipe.

[0014] The power component is used to drive the central rotating shaft to rotate; the static area is equipped with an inclined pipe, the upper part of which is a drainage area, which is connected to the disinfection room via an overflow pipe.

[0015] Furthermore, the first oxidation chamber is provided with an injection port, which is connected to the second oxidation chamber through an overflow pipe. Dosing pipes and aeration pipes are provided in the first oxidation chamber, the second oxidation chamber, and the disinfection chamber, and aeration heads are provided on the aeration pipes.

[0016] Furthermore, the aeration pipe is disposed within the base of the housing and is connected to the aeration equipment installed in the equipment room via a pipe built into the base.

[0017] Furthermore, the power component is an external booster air source, which is configured around the rotation of the scraper frame via a pipeline.

[0018] Furthermore, the power component is a submersible jet generator built into the sedimentation zone, which generates a rotating water flow and causes the central shaft and scraper frame to rotate.

[0019] Furthermore, a drive plate is provided on the scraper frame, and the drive plate corresponds to the driving direction of the power component.

[0020] Furthermore, the transverse partition includes a central seat, a connecting perforated area, and a connecting area. The central seat is connected to the connecting area through the connecting perforated area, and the connecting area is fixed to the inner wall of the baffle and the sedimentation area; thereby forming a connecting area in the middle region of the settling area and the sedimentation area.

[0021] Furthermore, a barrier is provided extending downward from the inner edge of the connecting area. The middle part of the barrier is rotatably engaged with the central pivot shaft, and a filter screen is provided in the lower area of ​​the barrier. A cleaning brush is provided on the scraper frame, and the cleaning brush is adapted to correspond with the filter screen.

[0022] Furthermore, the scraper frame includes a frame body, a reinforcing beam, and a brush body. The reinforcing beam is provided inside the frame body, and the brush body with a conical mud guide seat inclined surface is provided on the frame body.

[0023] Furthermore, the sewage outlet is connected to a sludge storage tank, and a conveying zone is provided inside the sewage outlet. The spiral conveyor plate is in contact with the conveying zone and conveys the sludge generated in the sedimentation zone to the sludge storage tank. A pressure sensor is installed in the sludge storage tank, and the sewage pipe is connected to the storage tank via a solenoid valve.

[0024] The beneficial effects of the above technical solution are as follows: The present invention mainly optimizes and improves the configuration structure of the sedimentation chamber. A baffle structure is configured in the sedimentation chamber, and the baffle forms a chemical addition area on one side of the sedimentation chamber. The chemical addition area enters the sedimentation chamber along with the water source after secondary oxidation. A rotary cleaning mechanism is configured in the sedimentation chamber. Under the action of this mechanism, the water source enters from the periphery of the rotating scraper frame and enters the sedimentation chamber in a uniform circumferential diffusion manner, thereby enabling the chemical agent to be fully mixed with the secondary oxidation water and to carry out an effective contact reaction in the sedimentation chamber, ensuring the sedimentation effect.

[0025] Meanwhile, the rotary cleaning mechanism in this invention can clean the conical sludge guide seat in the sedimentation zone, preventing sludge adhesion and drug precipitation, ensuring the effective contact between the drug and the water source. It can also clean the surface of the conical sludge guide seat to prevent sediment accumulation, so that the sediment is concentrated in the discharge port in the middle of the conical sludge guide seat. However, since the drug enters from the outside, it will inevitably undergo a long diffusion time to reach the central area. Therefore, this structure can ensure the utilization rate of the drug, prevent the drug from being discharged without full utilization, and prevent the discharged sludge from containing effective drug components. There is no need for secondary separation or reuse of the discharged sludge, reducing subsequent treatment costs.

[0026] In this invention, a horizontal partition is installed inside the original sedimentation chamber. The function of the horizontal partition is to divide the interior of the sedimentation chamber into a sedimentation zone and a settling zone, that is, to form a primary sedimentation tank and a secondary sedimentation tank. Secondary sedimentation is achieved in one tank, and the two sedimentation zones are connected by a connecting hollow area in the middle region, thereby improving the sedimentation effect.

[0027] Meanwhile, in this invention, a baffle is provided at the bottom of the partition plate, and the baffle is equipped with a filter screen at the bottom, so that the middle part of the sedimentation zone is connected to the settling zone. After the reagent has fully contacted and reacted, the rising purified water in the middle area is filtered and enters the settling zone for secondary sedimentation treatment.

[0028] Therefore, this invention features a novel structure. By configuring a rotary cleaning mechanism in the sedimentation zone, it not only improves sedimentation efficiency and reagent utilization but also reduces the loss of effective reagent components in the sludge, thereby lowering subsequent treatment costs. Simultaneously, this design enables secondary sedimentation to be completed within a single sedimentation tank, enhancing equipment integration and treatment efficiency. It significantly improves the treatment efficiency and water quality treatment effect of the sedimentation chamber, reduces maintenance costs, and ensures the long-term stable operation of the wastewater treatment system. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of an embodiment of the present invention;

[0030] Figure 2 This is a schematic diagram of another embodiment of the present invention;

[0031] Figure 3 This is a schematic diagram of the implementation structure of the rotary cleaning mechanism;

[0032] Figure 4 for Figure 3 Another perspective structural diagram;

[0033] Figure 5 for Figure 3 A top-view structural diagram;

[0034] Figure 6This is a schematic diagram of the main structure of the rotary cleaning mechanism;

[0035] Figure 7 for Figure 6 AA-direction cross section;

[0036] Figure 8 This is a schematic diagram of the arrangement of the power components;

[0037] Figure 9 This is a schematic diagram of the implementation structure of the storage box.

[0038] Reference numerals: 1-Shell, 2-Baffle, 3-First oxidation chamber, 4-Second oxidation chamber, 5-Sedimentation chamber, 501-Baffle, 502-Dosing area, 503-Dosing pipe, 504-Transverse diaphragm, 5041-Central seat, 5042-Connecting perforated area, 5043-Connecting area, 505-Sedimentation area, 506-Settling area, 507-Conical mud guide seat, 508-Connecting port, 509-Transfer shaft, 510-Scraper frame, 5101-Frame body, 5102-Reinforcing beam, 5 103-Brush body, 511-Lower connecting seat, 512-Screw conveyor plate, 513-Drain outlet, 514-Enclosure, 515-Filter screen, 516-Cleaning brush, 517-Power assembly, 518-Outer circumference, 519-Inner circumference, 520-Drive plate, 6-Disinfection room, 7-Equipment room, 8-Injection pipe, 9-Dosing pipe, 10-Overflow pipe, 11-Aeration pipe, 12-Aeration head, 13-Aeration equipment, 14-Sludge storage tank, 15-Pressure sensor, 16-Solenoid valve. Detailed Implementation

[0039] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments:

[0040] Example 1: This example aims to provide an integrated underground sewage treatment device, mainly used for underground sewage treatment. In existing sewage treatment processes, the sedimentation chamber, as one of the key treatment units, has a relatively simple configuration structure, mainly relying on inclined tube structures to achieve solid-liquid separation. Although this structure can increase the sedimentation area and improve sedimentation efficiency to a certain extent, it still has some problems and limitations in practical applications, mainly reflected in the contact between reagents and water, the single sedimentation method, sludge accumulation, and cleaning and maintenance issues. Based on this, this example provides an integrated underground sewage treatment device that can significantly improve the treatment efficiency and water quality treatment effect of the sedimentation chamber, reduce maintenance costs, and achieve long-term stable operation of the sewage treatment system.

[0041] like Figure 1-2As shown, an integrated underground sewage treatment device includes a shell 1, a first oxidation chamber 3, a second oxidation chamber 4, a sedimentation chamber, a disinfection chamber, and an equipment room. Multiple partitions are spaced within the shell, dividing the internal space into the first oxidation chamber 3, the second oxidation chamber 4, the sedimentation chamber 5, the disinfection chamber 6, and the equipment room 7. The shell 1, as the main body of the device, is made of high-strength, corrosion-resistant material to ensure long-term stable operation underground. The shell design is compact, facilitating installation and maintenance, and the partition material also possesses excellent corrosion resistance and stability.

[0042] The first oxidation chamber 3 is provided with an injection port, which is connected to the second oxidation chamber 4 through an overflow pipe 10. Dosing pipes and aeration pipes 11 are provided in the first oxidation chamber 3, the second oxidation chamber 4 and the disinfection chamber 6. Aeration heads 12 are provided on the aeration pipes 11. The aeration pipes are configured in the base of the shell and are connected to the aeration equipment 13 set in the equipment room through the pipes built into the base.

[0043] The first oxidation chamber 3 is equipped with an inlet connected to an inlet pipe 8 for receiving wastewater to be treated. It contains a mixing device and a dosing pipe; by adding appropriate amounts of oxidant and coagulant aid, the initial oxidation and coagulation of pollutants in the wastewater are promoted. The second oxidation chamber is connected to the first oxidation chamber via an overflow pipe, receiving treated water from the first oxidation chamber. In the second oxidation chamber, further aeration and chemical dosing enhance the oxidation, decomposition, and sedimentation of pollutants.

[0044] Sedimentation Chamber 5: After being treated in the first two oxidation chambers, wastewater enters sedimentation chamber 5 for solid-liquid separation. Sedimentation chamber 5 is equipped with a sludge discharge outlet at the bottom for easy periodic sludge discharge and cleaning.

[0045] Disinfection Room 6: After sedimentation, the clear water enters the disinfection room, where residual pathogenic microorganisms are killed through methods such as adding chemicals and aeration, ensuring that the effluent water quality meets the standards.

[0046] Equipment Room 7: Located at one end or side of the equipment, it is used to house and control the operation of the equipment. It contains key components such as aeration equipment, dosing equipment, and electrical control cabinets.

[0047] Aeration System: Aeration pipes with aeration heads are installed in the first oxidation room, second oxidation room, and disinfection room. The aeration pipes are connected to the aeration equipment in the equipment room through pipes in the base, providing uniform aeration to each treatment area and promoting the oxidation and decomposition of pollutants.

[0048] Chemical dosing system: The equipment is equipped with an automatic chemical dosing system that can automatically adjust the dosage according to water quality and treatment requirements. Dosing pipes are connected to each treatment zone to ensure uniform chemical dosing and improve treatment efficiency.

[0049] like Figure 1As shown, the sedimentation chamber 5 includes a dosing zone 502, a sedimentation zone, a settling zone, and a rotary cleaning mechanism. A baffle 501 is vertically installed inside the sedimentation chamber 5, forming the dosing zone 502 with the inner wall of the sedimentation chamber 5. Structurally, the second oxidation chamber 4 is connected to the dosing zone 502 via an overflow pipe. A dosing pipe 503 is installed within the dosing zone 502. The dosing zone 502 has an upper opening, and the dosing pipe extends downwards from the upper part of the dosing zone 502. Simultaneously, secondary oxidation water is added from the top, and the water flows downwards. The dosing zone 502 is located on the left side of the sedimentation chamber 5, with an lower opening, and is connected to the sedimentation zone 505.

[0050] A horizontal partition 504 is provided between the baffle 501 and the sedimentation chamber 5, dividing the sedimentation chamber 5 into a lower sedimentation zone 505 and an upper settling zone. A conical sludge guide seat 507 is provided at the bottom of the sedimentation zone 505. The lower part of the baffle 501 and the conical sludge guide seat 507 have a communication port 508. A sewage outlet 513 is provided in the middle of the downstream of the conical sludge guide seat 507. Structurally, the conical sludge guide seat 507 is located at the bottom of the sedimentation zone 505, with a downward-sloping middle section and arc-shaped conical truncated structures on both sides. The generated sludge can slide down the slope and fall into the downstream sewage outlet.

[0051] like Figure 2-7 As shown, the rotary cleaning mechanism includes a central shaft 509, a scraper frame 510, a spiral conveyor 513, and a power assembly 517. A central seat 5041 is provided in the middle of the transverse partition 504. The central seat 5041 is fixed to the inner wall of the baffle 501 and the sedimentation chamber 5 by a connecting rod. The function of the transverse partition 504 is to provide a foundation for the installation of the central shaft 509, and at the same time, to divide the internal space of the sedimentation chamber 5 into a sedimentation area 505 at the bottom for main sedimentation and a settling area 506 at the top for secondary sedimentation.

[0052] The upper and lower parts of the central shaft 509 are rotatably mounted on the central seat and in the drain outlet, respectively. Specifically, the upper part of the central shaft 509 is rotatably mounted on the central seat through a bearing seat, and the lower part is fixed to the inner wall of the drain outlet through a bearing and a bracket.

[0053] The scraper frame 510 is fixed on the central shaft 509 and fits snugly with the conical mud guide seat 507. The scraper frame 510 includes a frame body 5101, a reinforcing beam 5102, and a brush body 5103. The frame body 5101 is provided with a reinforcing beam 5012 inside. The frame body 5101 is provided with a brush body 5013 that fits snugly with the conical mud guide seat 507. The overall structure of the frame body is a right-angled trapezoidal structure. Its two sides are fixedly arranged on the central shaft 509, and the other side extends to the vicinity of the connecting port. It disperses and agitates the water inlet of the chemical dosing zone 502, so that the water flow is separated and dispersed along the periphery of the scraper frame 510 and enters the sedimentation zone 505 in a uniform circumferential diffusion manner. This allows the agent to be fully mixed with the secondary oxidation water and to carry out an effective contact reaction in the sedimentation zone 505, ensuring the sedimentation effect.

[0054] The spiral conveyor plate 513 is disposed at the lower part of the central shaft 509 and is located in the drain port. The lower part of the drain port 513 is connected to the drain pipe. As sedimentation proceeds, the spiral conveyor plate 513 in this embodiment will continuously and dynamically convey the generated sludge to the bottom to ensure sludge discharge and realize continuous sedimentation operation without stopping the machine.

[0055] The power unit 517 drives the rotation of the central shaft 509. An inclined pipe is installed within the settling area 506, with a drainage area at the top, connected to the disinfection room via an overflow pipe. In one embodiment, the power unit 517 is an external pressurized air source, positioned around the rotating scraper frame 510 via a pipe. Alternatively, the power unit 517 can be a submersible jet mixer built into the sedimentation area 505, generating a rotating water flow that causes the central shaft 509 and scraper frame 510 to rotate.

[0056] The inner circumference of the scraper frame 510 is 519, and an outer circumference 518 is arranged on the outside of the inner circumference 519. Submersible propellers or pipe nozzles are evenly spaced on the outer circumference 518, thereby forming a power drive point on the outer circumference of the scraper frame 510, which makes the scraper frame 510 rotate. At the same time, this structure can also improve the power of the water flow and accelerate the mixing of the agent and the water source.

[0057] This embodiment features a compact structure and small footprint, making it suitable for space-constrained applications. The scraper frame 510 cleans the conical sludge guide seat 507 within the sedimentation zone 505, preventing sludge adhesion and chemical precipitation, ensuring effective contact between the chemical and the water source. It also cleans the surface of the conical sludge guide seat 507, preventing sediment buildup and concentrating sediment in the central discharge port 513. Since the chemical enters from the periphery, it requires a prolonged diffusion period to reach the central area. This structure ensures high chemical utilization, preventing underutilized chemicals from settling and ensuring the discharged sludge contains effective chemical components. This eliminates the need for secondary separation or reuse of the discharged sludge, reducing subsequent treatment costs. The integrated design makes installation and maintenance simple and convenient. The efficient treatment process ensures stable and compliant effluent quality. Corrosion-resistant and wear-resistant materials ensure long-term stable operation. The high degree of automation makes operation simple, safe, and reliable.

[0058] Example 2 further illustrates the structure of the scraper frame 510.

[0059] In this embodiment, a drive plate is provided on the scraper frame 510, and the drive plate corresponds to the driving direction of the power component 517.

[0060] In this embodiment, in order to enhance the driving power of the scraper frame 510, a drive plate is configured on the drive plate, so that it can more effectively receive the drive from the power component 517, while enhancing the disturbance of the water flow and improving the mixing effect of the agent.

[0061] Example 3 further illustrates the structural form and fixing method of the diaphragm 504.

[0062] In this embodiment, the transverse partition 504 includes a central seat 5041, a connecting hollow area 5042, and a connecting area 5043. The central seat 5041 is connected to the connecting area 5043 through the connecting hollow area 5042. The connecting area is fixed on the inner wall of the baffle 501 and the sedimentation area 505, thereby forming a connecting area in the middle region of the settling area 506 and the sedimentation area 505.

[0063] A barrier 514 extends downward from the inner edge of the connecting area 5043. The middle part of the barrier 514 is rotatably engaged with the central pivot 509. A filter screen 515 is arranged in the lower part of the barrier. A cleaning brush 516 is provided on the scraper frame 510. The cleaning brush 516 is adapted to correspond with the filter screen.

[0064] In this embodiment, a barrier 514 is provided in the hollow area of ​​the partition 504, and a filter screen 515 is provided at the bottom of the barrier. This structure can filter the sewage in the sedimentation zone 505 and let it enter the settling zone 506, thereby increasing the amount of sludge sedimentation in the sedimentation zone 505 and reducing the amount of sludge in the settling zone 506. At the same time, in order to ensure the smooth flow of the filter screen, a cleaning rack is provided on the scraper frame 510. The cleaning rack corresponds one-to-one with the scraper frame 510 and extends upward to the bottom of the barrier. The barrier filter screen is cleaned when the scraper frame 510 rotates.

[0065] This embodiment is configured with a combination of enclosure and filter screen, so that the middle part of the sedimentation zone 505 is connected to the settling zone 506. After the reagents have fully contacted and reacted, the rising purified water in the middle area is filtered and enters the settling zone 506 for secondary sedimentation treatment.

[0066] Example 4 further illustrates the implementation structure of the sewage outlet 513.

[0067] In this embodiment, as Figure 9 As shown, the sewage outlet 513 is connected to the sewage storage tank 14. The sewage outlet 513 is provided with a conveying area. The spiral conveyor plate 513 is attached to the conveying area and conveys the sludge generated in the sedimentation area 505 to the sewage storage tank 14. A pressure sensor 16 is provided in the sewage storage tank. The sewage pipe is connected to the storage tank via a solenoid valve 17.

[0068] This embodiment provides a sludge storage tank, in which the generated sludge is collected. When the sludge storage tank is full, the spiral conveyor plate 513 will continuously squeeze and increase the internal pressure of the sludge storage tank, thereby triggering the pressure sensor, opening the solenoid valve, and starting the sewage pump to extract the sludge.

[0069] The embodiments of the present invention described above do not constitute a limitation on the scope of protection of the present invention. The basic concept of the present invention is that by configuring a rotary cleaning mechanism in the sedimentation zone 505, not only can the sedimentation effect and reagent utilization rate be improved, but the loss of effective reagent components in the sludge can also be reduced, thereby lowering the subsequent treatment costs. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. An integrated underground sewage treatment device, comprising a shell, a first oxidation chamber, a second oxidation chamber, a sedimentation chamber, a disinfection chamber, and an equipment room; wherein multiple partitions are spaced within the shell to divide the internal space into the first oxidation chamber, the second oxidation chamber, the sedimentation chamber, the disinfection chamber, and the equipment room; characterized in that: The sedimentation chamber includes a dosing area, a sedimentation area, a settling area, and a rotary cleaning mechanism; a baffle is vertically installed inside the sedimentation chamber, and the baffle and the inner wall of the sedimentation chamber form a dosing area; the second oxidation chamber is connected to the dosing area through an overflow pipe, and a dosing pipe is installed in the dosing area; A horizontal partition is provided between the baffle and the sedimentation chamber, which divides the sedimentation chamber into a lower sedimentation zone and an upper settling zone. A conical sludge guide seat is provided at the bottom of the sedimentation zone. The lower part of the baffle and the conical sludge guide seat have a communication port, and a sewage outlet is provided at the middle of the downstream of the conical sludge guide seat. The rotary cleaning mechanism includes a central shaft, a scraper frame, a spiral conveyor plate, and a power assembly; a central seat is provided in the middle of the transverse partition, and the central seat is fixed to the inner wall of the baffle and sedimentation chamber by a connecting rod; A discharge port is provided at the lower part of the sedimentation zone. The upper and lower parts of the central rotating shaft are rotatably mounted on the central seat and in the sewage discharge port, respectively. The scraper frame is fixed on the central rotating shaft and fits snugly with the conical mud guide seat. Water enters from the periphery of the rotating scraper frame and enters the sedimentation zone in a uniform circumferential diffusion manner. The spiral conveyor plate is arranged at the lower part of the central rotating shaft and is located in the sewage discharge port. The lower part of the sewage discharge port is connected to a sewage pipe. The power component is used to drive the central rotating shaft to rotate; the static area is equipped with an inclined pipe, the upper part of which is a drainage area, and the drainage area is connected to the disinfection room via an overflow pipe. The diaphragm includes a central seat, a connecting perforated area, and a connecting area. The central seat is connected to the connecting area through the connecting perforated area, and the connecting area is fixed to the inner wall of the baffle and the sedimentation area; thus forming a connecting area in the middle region of the settling area and the sedimentation area. The inner edge of the connecting area extends downwards with a barrier. The middle part of the barrier is rotatably engaged with the central pivot shaft. A filter screen is arranged in the lower part of the barrier. A cleaning brush is provided on the scraper frame, and the cleaning brush is adapted to correspond with the filter screen.

2. The integrated underground sewage treatment equipment according to claim 1, characterized in that: The first oxidation chamber is equipped with an injection port, which is connected to the second oxidation chamber through an overflow pipe. Dosing pipes and aeration pipes are installed in the first oxidation chamber, the second oxidation chamber, and the disinfection chamber, and aeration heads are installed on the aeration pipes.

3. The integrated underground sewage treatment equipment according to claim 2, characterized in that: The aeration pipe is configured inside the base of the housing and is connected to the aeration equipment installed in the equipment room through a pipe built into the base.

4. The integrated underground sewage treatment equipment according to claim 1, characterized in that: The power unit is an external booster air source, which is configured around the rotating scraper frame via pipelines.

5. The integrated underground sewage treatment equipment according to claim 1, characterized in that: The power unit is a submersible jet generator built into the sedimentation zone. The submersible jet generator generates a rotating water flow and causes the central shaft and scraper frame to rotate.

6. The integrated underground sewage treatment equipment according to claim 4 or 5, characterized in that: The scraper frame is equipped with a drive plate, which corresponds to the driving direction of the power component.

7. The integrated underground sewage treatment equipment according to claim 1, characterized in that: The scraper frame includes a frame body, a reinforcing beam, and a brush body. The reinforcing beam is installed inside the frame body, and the brush body with a conical mud guide seat inclined surface is installed on the frame body.

8. The integrated underground sewage treatment equipment according to claim 1, characterized in that: The sewage outlet is connected to a sludge storage tank. A conveying zone is set inside the sewage outlet. A spiral conveyor plate is attached to the conveying zone and conveys the sludge generated in the sedimentation zone to the sludge storage tank. A pressure sensor is set in the sludge storage tank. The sewage pipe is connected to the storage tank via a solenoid valve.

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