Reclaimed water reuse integrated device based on tubular ultrafiltration membrane

Abstract

The invention provides a reclaimed water recycling integrated device based on a tubular ultrafiltration membrane, which comprises a support frame, a pretreatment part, an ultrafiltration part and a disinfection part are arranged on the support frame, a settling tank is arranged on one side of the support frame to preliminarily precipitate large-particle impurities, and the settling tank, the pretreatment part, the ultrafiltration part and the disinfection part are sequentially connected to form a reclaimed water treatment path; the ultrafiltration part comprises a main body box and a plurality of groups of ultrafiltration membrane pipes, the membrane pipes are clamped on the main body box, the main body box is provided with a first water storage tank, and the water storage tank is respectively connected with the pretreatment part and the water inlet ends of the membrane pipes; one end of the membrane tube is provided with a flushing part and a backflushing part to form a collaborative cleaning structure; a second water storage tank and multiple groups of water storage tanks are arranged below the main body box, the water storage tank is connected with the water storage tanks, part of the water storage tanks are connected with the flushing part, the rest are connected with the backflushing part, and the second water storage tank is further connected with the disinfecting part. The device can realize efficient treatment of reclaimed water and cleaning of the ultrafiltration membrane tube, can complete deep cleaning of the membrane tube without disassembly, and effectively solves the problems that the membrane tube of the traditional device is easy to block and needs to be manually disassembled and washed.

Description

Technical Field

[0001] This invention relates to the field of greywater treatment technology, and more specifically, to an integrated greywater reuse device based on a tubular ultrafiltration membrane. Background Technology

[0002] The integrated water reuse device based on tubular ultrafiltration membrane is a specialized water treatment equipment used to filter and purify wastewater generated in domestic and industrial fields, such as bath water and cooling water, to meet reuse standards. It is used for water used for toilet flushing, landscaping, and equipment cooling. The core technology relies on the screening effect of tubular ultrafiltration membrane modules to remove pollutants such as suspended solids, colloids, and macromolecular organic matter from the water, thereby realizing the recycling of water resources and reducing the consumption of fresh water and the amount of wastewater discharged. However, during the long-term operation of a wastewater reuse system, the surface of the tubular ultrafiltration membrane tubes is prone to forming a fouling layer due to impurities in the raw water. Traditional wastewater reuse systems often lack a cleaning structure for the ultrafiltration membrane tubes, making it impossible to clean the inside of the membrane tubes. Over time, this can lead to a significant decrease in membrane flux, a continuous decline in wastewater purification efficiency, and even membrane tube blockage and failure, affecting the stable operation of the system and the effectiveness of wastewater reuse. At the same time, manual disassembly of the ultrafiltration membrane tubes is required, which not only increases the labor intensity of maintenance personnel but also prolongs the downtime of the system, interrupting the continuous treatment and reuse process of wastewater and further reducing the overall treatment efficiency. Summary of the Invention

[0003] In view of the aforementioned problems, and in conjunction with the first aspect of the present invention, embodiments of the present invention provide an integrated wastewater reuse device based on a tubular ultrafiltration membrane, the device comprising: An integrated greywater reuse device based on tubular ultrafiltration membrane includes a support frame, on which a pretreatment section, an ultrafiltration section, and a disinfection section are arranged. A sedimentation tank for preliminary sedimentation to remove large particulate impurities is arranged on one side of the support frame. The sedimentation tank is connected to the inlet of the pretreatment section, the outlet of the pretreatment section is connected to the inlet of the ultrafiltration section, and the outlet of the ultrafiltration section is connected to the inlet of the disinfection section. The greywater treatment path is formed by the connection of the various components. The ultrafiltration unit includes a main body box and multiple sets of ultrafiltration membrane tubes. The ultrafiltration membrane tubes are clamped on the main body box. A first water storage tank is provided on the main body box. The first water storage tank is connected to the pretreatment unit and the water inlet of the multiple sets of ultrafiltration membrane tubes. One end of the ultrafiltration membrane tube is provided with a flushing part for flushing the membrane from top to bottom and a backwashing part for flushing the membrane from bottom to top. The flushing part and the backwashing part form a cooperative cleaning structure. Below the main body box, there is also a second water storage tank and multiple sets of water storage tanks. The second water storage tank is connected to the multiple sets of water storage tanks, and the multiple sets of water storage tanks are connected to the rinsing section. In addition, the multiple sets of water storage tanks are connected to the backwash section, and the second water storage tank is connected to the disinfection section.

[0004] According to a preferred embodiment, the pretreatment unit includes an inlet pipe, an outlet pipe, and multiple sets of pretreatment components. The multiple sets of pretreatment components are located between the inlet pipe and the outlet pipe, and the central axes of the three components coincide to form a cylindrical structure. The water inlet pipe is connected to the sedimentation tank via a water pump. An isolation sleeve is installed above the water inlet tank. The isolation sleeve passes through the water inlet pipe. Multiple sets of isolation rods are installed inside the isolation sleeve. The isolation rods are inclined and form a fence structure to intercept suspended impurities in the water. The fence structure is inclined. A discharge pipe is provided on one side of the water inlet pipe, and a discharge port is opened on the isolation sleeve corresponding to the discharge pipe. The discharge pipe is connected to the isolation sleeve through the discharge port. The discharge pipe is an inclined device with an inclination slope that is consistent with the inclination slope of the fence structure. A detachable waste bin for collecting and intercepting impurities is also provided on one side of the water inlet pipe, and the discharge pipe is connected to the waste bin.

[0005] According to a preferred embodiment, the pretreatment component is connected to an adjacent pretreatment component via a connecting pipe. The pretreatment component includes a treatment pipe and a filter plate. The treatment pipe is connected to the connecting pipe. The pretreatment component near the inlet pipe and the outlet pipe is connected to both through the treatment pipe. A filter box is provided on the treatment pipe. The filter box passes through the treatment pipe. The filter plate is located inside the filter box and is rotatably connected to the filter box. A rotating cavity is formed between the processing tube and both ends of the filter box. The two ends of the filter plate pass through the two sets of rotating cavities, and the two ends of the filter plate swing up and down in the rotating cavities respectively. A baffle is provided on one side of the processing tube, and the filter plate forms an angle α with the central axis of the processing tube through the baffle. The angle α is between 70° and 90°, and the filter plate is in a parallel state and an inclined state. One of the rotating cavities is equipped with a lifting component.

[0006] According to a preferred embodiment, the lifting component includes a lifting housing and a lifting plate. The lifting housing is installed on the outside of the baffle, the lifting plate passes through the lifting housing, and the top of the lifting rod is rotatably connected to the filter plate. The bottom of the lifting housing is provided with multiple sets of lifting sleeves, the bottom of the lifting rod is provided with a lifting rod, the lifting rod passes through the lifting sleeve, and one end of the lifting rod is provided with a first sealing block, the first sealing block passes through the lifting sleeve and contacts the inner wall of the lifting sleeve; An injection sleeve is provided on one side of the filter box, and an electric cylinder is provided above the injection sleeve. A second sealing block is provided at the telescopic end of the electric cylinder. The telescopic end of the electric cylinder passes through the injection sleeve, and the inner wall of the second sealing block contacts the inner wall of the injection sleeve. The injection sleeve is connected to the lifting sleeve via a connecting pipe, and all three are filled with hydraulic oil to form a linkage structure.

[0007] According to a preferred embodiment, a sealing plate is provided on the top of the lifting plate, and a slot is opened on the top of the lifting plate. The sealing plate is locked in the slot and connected to the lifting plate by multiple sets of springs. The sealing plate abuts against the bottom of the filter plate. The lifting component and the discharge pipe are located on both sides of the water inlet pipe, respectively. Rotating rods are provided on both sides of the connecting pipe, and rotating platforms are rotatably provided on both sides of the support frame. The rotating rods are connected to the rotating platforms. A motor is provided on one side of the support frame, and the motor shaft is connected to the rotating platform. The pretreatment section forms a vertical state and a slope state. When the pretreatment section is in a vertical position, the filter plate is in a planar position; When the pretreatment section is in a sloped state, the filter plate is in an inclined state; The pretreatment unit also includes a water storage tank, which is mounted on the support frame and connected to the outlet pipe and the first water storage tank.

[0008] According to a preferred embodiment, the ultrafiltration membrane tube includes a main tube and a main cover plate. The main cover plate covers the top of the main tube to form an ultrafiltration chamber. An ultrafiltration membrane core is disposed in the ultrafiltration chamber. The two ends of the ultrafiltration membrane core are connected to the flushing section and the backwashing section, respectively. A water collection chamber for collecting the water produced after filtration by the ultrafiltration membrane core is formed between the ultrafiltration membrane core and the main tube. The rinsing section is provided with multiple sets of first connecting pipes, which are connected to the first water storage tank. The water in the first water storage tank enters the ultrafiltration membrane core through the multiple sets of first connecting pipes. The bottom of the main pipe is provided with multiple sets of first drainage tanks and multiple sets of water outlets. The water collection chamber is connected to the first drainage tanks through the multiple sets of water outlets. Second connecting pipes are respectively provided on both sides of the first drainage tanks. A wastewater tank is provided on one side of the main pipe. One set of the second connecting pipes is connected to the second water storage tank, and the other set is connected to the wastewater tank.

[0009] According to a preferred embodiment, the rinsing section includes a funnel platform and a rinsing nozzle disposed on the top of the main body cover plate. The rinsing nozzle is located inside the funnel platform and installed on the main body cover plate. Multiple sets of first connecting pipes are located on the funnel platform and arranged around the rinsing nozzle. The rinsing nozzle is connected to one of the sets of water storage tanks. The backflush section includes an installation sleeve disposed inside the main tube, and an installation cover is disposed on the top of the installation sleeve. The two are connected to form an installation cavity. One end of the ultrafiltration membrane core is inserted into the installation cover, and the ultrafiltration membrane core communicates with the installation cavity. The bottom of the mounting sleeve is provided with multiple sets of third connecting pipes, and a second drainage tank is provided below the first drainage tank. The second drainage tank is connected to the multiple sets of third connecting pipes and the wastewater tank, and the wastewater tank is connected to the sedimentation tank.

[0010] According to a preferred embodiment, the backflush section further includes a backflush nozzle, which is installed at the bottom of the main body pipe. The water outlet of the backflush nozzle is located inside the mounting sleeve, and the water outlet direction of the backflush nozzle is upward. The backflush nozzle is connected to another set of the water storage tanks.

[0011] According to a preferred embodiment, the main tube is provided with a flushing pipe, the flushing pipe is spirally arranged, and multiple sets of flushing nozzles are opened on the inner side of the flushing pipe. The flushing nozzles are located in the water collection cavity, and both ends of the flushing pipe are connected to one of the sets of water storage tanks. The rinsing nozzle is inclined along the tangent of the main tube, and the rinsing direction of the rinsing nozzle is towards the ultrafiltration membrane core.

[0012] According to a preferred embodiment, the disinfection unit includes a disinfection tank and multiple sets of ultraviolet lamps, wherein the disinfection tank is connected to the second water storage tank and external water-using equipment; Multiple sets of ultraviolet lamps are installed inside the disinfection tank.

[0013] Compared with the prior art, the present invention has the following beneficial effects: 1. This device integrates a synergistic cleaning structure of "rinsing section + backwash section" at one end of the ultrafiltration membrane tube, and is equipped with multiple sets of water storage tanks and a second water tank to form a cleaning water supply system. This precisely solves the core problem of traditional wastewater reuse devices that lack an ultrafiltration membrane tube cleaning structure and require manual disassembly and cleaning. Specifically, the rinsing section connects to the water storage tank via rinsing nozzles on the main cover plate to achieve forward rinsing "from top to bottom," which can directly flush away surface impurities adhering to the inner wall of the ultrafiltration membrane core. The backwash section connects to another set of water storage tanks via backwash nozzles at the bottom of the main tube to achieve reverse impact "from bottom to top," which can penetrate the membrane pores to remove deep-seated contaminants. With the guidance of the installation sleeve and the second drainage tank, the cleaning wastewater is quickly discharged into the wastewater tank and finally returned to the sedimentation tank for secondary treatment. Thorough cleaning can be completed without disassembling the membrane tube. This integrated cleaning structure not only avoids the problems of membrane flux decline and membrane tube blockage and scrapping caused by the lack of cleaning function in traditional equipment, but also eliminates the operation steps of manually disassembling membrane tubes, greatly reducing the labor intensity of operation and maintenance personnel. At the same time, it avoids the downtime caused by disassembly and cleaning, ensuring the stability of the continuous treatment and reuse process of reclaimed water and significantly improving the overall operating efficiency of the equipment.

[0014] 2. The pretreatment section of this device employs a multi-stage impurity interception structure design to provide a high-quality feed water environment for the ultrafiltration membrane tubes, further improving the purification efficiency of the device and extending the membrane tube lifespan. The inclined isolation bar grid structure inside the feed pipe can initially intercept suspended impurities in the water, and the impurities are then directed to a removable waste bin via an inclined discharge pipe, preventing large particles from entering subsequent treatment stages.

[0015] 3. Multiple pretreatment components adopt a coaxial cylindrical structure that coincides with the central axis of the inlet and outlet pipes. The filter box on the treatment pipe has a built-in swingable filter plate, which can be adjusted by hydraulically driven lifting components to a 70°-90° angle. The pretreatment section can switch between vertical and slope states via the rotating tables and motors on both sides of the support frame. When the pretreatment section is in a vertical state, the filter plate is simultaneously in a planar state. At this time, the flow path of the greywater in the treatment pipe is smooth, which can reduce water flow resistance, accelerate the overall flow speed of greywater, and meet the high-efficiency treatment requirements of conventional water flow. When the pretreatment section is switched to the slope state, the filter plate tilts synchronously with the treatment pipe. Compared with the flat state, the tilted filter plate greatly increases the contact area with the greywater, which can accommodate a larger volume of greywater to pass through the filtration area at the same time, effectively increasing the water treatment capacity per unit time and adapting to the treatment needs of high water flow scenarios.

[0016] 4. This device integrates the pretreatment section, ultrafiltration section, disinfection section, sedimentation tank, and water storage tank into a single unit via a support frame. Combined with a modular cavity and piping design, this significantly enhances the device's practicality and adaptability to various scenarios. The vertical arrangement of the ultrafiltration section's main body and the first and second water storage tanks allows for close connection between the pretreated effluent and ultrafiltration influent, and between the ultrafiltration permeate and disinfection influent, reducing piping losses. The pretreatment section features a motor-driven rotating platform that can switch between vertical and slope modes to accommodate different water qualities (high / low impurity content). The disinfection section incorporates multiple ultraviolet lamps to sterilize the ultrafiltration permeate from the second storage tank, ensuring the effluent meets hygiene standards for reuse scenarios such as toilet flushing, landscaping, and equipment cooling. Furthermore, each component employs detachable structures such as snap-fit ​​and flange connections (e.g., the ultrafiltration membrane tube is snapped into the main body box, and the waste bin is detachably connected to the inlet pipe), facilitating future maintenance and component replacement. The wastewater tank and sedimentation tank's reflux design form a closed-loop water circulation system, reducing water waste. Overall, this integrated, modular, and adjustable design gives the device advantages such as small footprint, easy operation, and adaptability to various scenarios. It can meet the greywater reuse needs of different locations, including residential communities and industrial plants, offering significantly better practicality and economy than traditional decentralized greywater reuse systems. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the disassembled structure of the present invention; Figure 3 This is a schematic diagram of the preprocessing section after it has been disassembled; Figure 4 This is a schematic diagram of the structure after the water inlet pipe has been disassembled; Figure 5 This is a schematic diagram of the structure after the preprocessing components are disassembled; Figure 6 This is a schematic diagram of the disassembled injection sleeve and electric cylinder. Figure 7 This is a structural diagram of the disassembled lifting component; Figure 8 It is a cross-sectional view of the treatment pipe and the filter box; Figure 9 This is a schematic diagram of the structure of the ultrafiltration membrane tube after disassembly; Figure 10 This is a schematic diagram of the internal structure of the main tube; Figure 11 This is a schematic diagram of the bottom structure of the main tube; Figure 12 yes Figure 9 A magnified view of a portion of region a.

[0018] In the diagram, the correspondence between component names and their corresponding reference numerals is as follows: 11. Support frame; 12. Sedimentation tank; 13. Disinfection tank; 14. Ultraviolet lamp; 21. Main body box; 22. First water storage tank; 23. Second water storage tank; 24. Water storage tank; 31. Inlet pipe; 32. Outlet pipe; 33. Isolation sleeve; 34. Isolation rod; 35. Discharge pipe; 36. Discharge port; 37. Waste bin; 38. Connecting pipe; 41. Processing pipe; 42. Filter plate; 43. Filter box; 44. Baffle; 45. Water storage tank; 501. Lifting shell; 502. Lifting plate; 503. Lifting sleeve; 504. Lifting rod; 505. 506. Sealing block; 507. Injection sleeve; 508. Electric cylinder; 509. Second sealing block; 510. Sealing plate; 511. Rotating rod; 512. Rotating table; 603. Main tube; 604. Main cover plate; 605. Ultrafiltration membrane core; 606. First connecting pipe; 607. First drain tank; 608. Second connecting pipe; 609. Funnel platform; 610. Flushing nozzle; 611. Mounting sleeve; 612. Mounting cover; 613. Third connecting pipe; 614. Second drain tank; 615. Backflush nozzle; 616. Flushing pipe; 617. Flushing nozzle. Detailed Implementation

[0019] The present invention will now be described in detail with reference to the accompanying drawings; like Figures 1 to 12 As shown, the present invention provides an integrated water reuse device based on tubular ultrafiltration membrane, including a support frame 11. The support frame 11 serves as the load-bearing foundation of the entire device, providing stable installation support for the pretreatment unit, ultrafiltration unit and disinfection unit, ensuring that each treatment unit maintains a fixed relative position during operation, and avoiding the impact of vibration or displacement on the water treatment process.

[0020] The support frame 11 is equipped with a pretreatment unit, an ultrafiltration unit, and a disinfection unit. The three treatment units are arranged sequentially along the direction of greywater treatment, forming a continuous treatment chain. A sedimentation tank 12 is set on one side of the support frame 11 for preliminary sedimentation to remove large particulate impurities. The greywater to be treated is first transported to the sedimentation tank 12 through a pipeline. After a certain period of settling in the sedimentation tank 12, large particulate impurities such as silt and gravel in the water will settle to the bottom of the tank due to gravity, achieving preliminary purification. The sedimentation tank 12 is connected to the inlet of the pretreatment unit through a pipeline, and the pipeline is equipped with a water pump. The water pump provides power to transport the pre-purified greywater in the sedimentation tank 12 to the pretreatment unit. The outlet of the pretreatment unit is also connected to the inlet of the ultrafiltration unit through a pipeline, and the outlet of the ultrafiltration unit is connected to the inlet of the disinfection unit through a pipeline. Through the cooperation of the pipelines and water pumps between the components, a complete and continuous greywater treatment path is formed, ensuring that the greywater can flow through each treatment unit in an orderly manner.

[0021] For example, using domestic wastewater from a residential community (initial suspended solids content 85 mg / L, colloid content 22 mg / L) as the treatment target, after starting the device, the pretreatment unit was controlled to operate in a vertical state (filter plate 42 in a flat state) for 1 hour. After testing, the suspended solids content in the effluent from the pretreatment unit decreased to 12 mg / L, and the colloid content decreased to 3.5 mg / L. Switching the pretreatment unit to a slope state (treatment pipe 41 at an angle of 30° to the horizontal plane, filter plate 42 at an angle of 75° to the central axis of treatment pipe 41), the same wastewater was treated for 1 hour. The effluent suspended solids content was 10 mg / L, and the colloid content was 3.2 mg / L. Moreover, the water treatment capacity per unit time increased by 40% compared to the vertical state. This verifies that the pretreatment unit can efficiently intercept impurities in different states, and the slope state is suitable for high water flow requirements.

[0022] The ultrafiltration unit includes a main body box 21 and multiple sets of ultrafiltration membrane tubes. The multiple sets of ultrafiltration membrane tubes are evenly spaced and clamped onto the main body box 21. The main body box 21 serves to fix and protect the ultrafiltration membrane tubes, and also provides a foundation for the subsequent installation of the cleaning structure. A first water storage tank 22 is installed on the main body box 21. The first water storage tank 22 is connected to the pretreatment unit and the inlet of the multiple sets of ultrafiltration membrane tubes via pipes. The treated water flowing out of the pretreatment unit first enters the first water storage tank 22 for temporary storage. The first water storage tank 22 buffers and stabilizes the pressure of the treated water, preventing fluctuations in the flow rate of the pretreatment unit's water from affecting the filtration effect of the ultrafiltration membrane tubes. Subsequently, the treated water in the first water storage tank 22 is evenly distributed to the... The inlet end of each ultrafiltration membrane tube ensures that each tube can stably receive recycled water for filtration. One end of each ultrafiltration membrane tube is equipped with a flushing section for rinsing the membrane from top to bottom and a backwashing section for rinsing the membrane from bottom to top. Both the flushing and backwashing sections are connected to the corresponding water supply structure through pipes. After the ultrafiltration membrane tube has been used for a period of time, the flushing section can spray clean water from top to bottom to wash away the surface impurities attached to the inner wall of the ultrafiltration membrane tube, while the backwashing section can spray clean water from bottom to top to impact the membrane pores that are blocked inside the ultrafiltration membrane tube. Through the coordinated action of the flushing and backwashing sections, a synergistic cleaning structure is formed, which effectively removes pollutants from the ultrafiltration membrane tube and restores its filtration performance.

[0023] Below the main body 21, there is also a second water storage tank 23 and multiple sets of water storage tanks 24. The second water storage tank 23 and the multiple sets of water storage tanks 24 are connected by pipes, and valves are installed on the pipes to control the flow of water between the second water storage tank 23 and the water storage tanks 24. The multiple sets of water storage tanks 24 are connected to the rinsing section through pipes to provide the rinsing section with the clean water required for cleaning. In addition, the multiple sets of water storage tanks 24 are connected to the backwash section through pipes to provide the backwash section with the clean water required for cleaning. The water storage tanks 24 can store enough clean water in advance to ensure that the rinsing section and the backwash section can be quickly supplied with water during cleaning. The second water storage tank 23 is connected to the disinfection section through pipes, and the pipes are equipped with water pumps. The water filtered by the ultrafiltration membrane tube first enters the second water storage tank 23 for temporary storage, and then the water pump transports the water in the second water storage tank 23 to the disinfection section for subsequent disinfection treatment.

[0024] Meanwhile, the entire device connects each component through pipes, a technique not shown extensively in the diagram, and is controlled by an external controller.

[0025] like Figures 3 to 5 , Figure 8 As shown, the treatment unit includes an inlet pipe 31, an outlet pipe 32, and multiple sets of pretreatment components. The multiple sets of pretreatment components are connected sequentially between the inlet pipe 31 and the outlet pipe 32. The central axes of the three are kept coincident, forming a cylindrical structure together. This structure allows the greywater to flow axially in the pretreatment unit, reducing the energy loss caused by the water flowing around.

[0026] One end of the inlet pipe 31 is connected to the outlet of the water pump via a pipe, and the inlet of the water pump is connected to the sedimentation tank 12 via a pipe. Driven by the water pump, the water that has undergone preliminary sedimentation in the sedimentation tank 12 is transported into the inlet pipe 31. An isolation sleeve 33 is installed above the inlet pipe 31. The outer wall of the isolation sleeve 33 is fitted to the inner wall of the inlet pipe 31 and is installed inside the inlet pipe 31. Multiple sets of isolation rods 34 are evenly distributed inside the isolation sleeve 33. The isolation rods 34 are inclined and there is a certain gap between adjacent isolation rods 34. The arrangement of multiple sets of isolation rods 34 forms a fence structure for intercepting suspended impurities in the water. The fence structure is inclined. When the water flows through the inlet pipe 31, the suspended impurities in the water flow will be blocked by the fence structure and cannot continue to move forward with the water flow.

[0027] A discharge pipe 35 is fixed on the side wall of the inlet pipe 31. A discharge port 36 is opened on the isolation sleeve 33 at the position corresponding to the discharge pipe 35. One end of the discharge pipe 35 is connected to the interior of the isolation sleeve 33 through the discharge port 36. The discharge pipe 35 is inclined as a whole, and its inclination slope is consistent with the inclination slope of the fence structure. Impurities intercepted by the fence structure will slide along the inclined fence structure under the impact of water flow and their own gravity, and enter the discharge pipe 35 through the discharge port 36.

[0028] A waste bin 37 for collecting and intercepting impurities is also connected to one side of the water inlet pipe 31 by a clip or bolt. The top of the waste bin 37 is open, and the other end of the discharge pipe 35 is connected to the inside of the waste bin 37. Impurities flowing out from the discharge pipe 35 fall directly into the waste bin 37. When the impurities in the waste bin 37 accumulate to a certain amount, it can be removed from the water inlet pipe 31 for cleaning. After cleaning, it can be reinstalled in its original position to ensure that the impurity interception and collection process can continue.

[0029] The pretreatment unit is connected to the adjacent pretreatment unit through the connecting pipe 38. The two ends of the connecting pipe 38 are respectively attached to the ports of the two sets of pretreatment units, and the connection is sealed by the sealing ring to prevent the greywater from leaking from the gap during the transportation process. This ensures that multiple sets of pretreatment units can be connected in series to form a continuous treatment channel, allowing the greywater to flow through each set of units in sequence to complete deep filtration.

[0030] The pretreatment assembly includes a treatment pipe 41 and a filter plate 42. The two ends of the treatment pipe 41 are fitted to the inner wall of the connecting pipe 38 and are connected by bolts or clamps. The pretreatment assembly near the inlet pipe 31 and outlet pipe 32 has one end of its treatment pipe 41 directly connected to the outlet end of the inlet pipe 31, and the other end connected to other pretreatment assemblies through the connecting pipe 38. The inlet end of the outlet pipe 32 is directly connected to the treatment pipe 41 of the last pretreatment assembly, forming a complete pretreatment water flow path. A filter box 43 is fixed on the side wall of the treatment pipe 41. The filter box 43 is hollow inside and runs horizontally through the pipe wall of the treatment pipe 41, allowing the water in the treatment pipe 41 to enter the filter box 43. The filter plate 42 is located inside the filter box 43, and its two ends are rotatably connected to the inner wall of the filter box 43 through a rotating shaft. The filter plate 42 can rotate around the rotating shaft inside the filter box 43 to adjust the filtration angle.

[0031] Between the inner wall of the treatment pipe 41 and the interfaces at both ends of the filter box 43, an annular rotating cavity is formed. The size of the rotating cavity is sufficient to accommodate the movement of the end of the filter plate 42. The two ends of the filter plate 42 are respectively inserted into the two sets of rotating cavities, and the ends do not contact the inner wall of the rotating cavity, leaving a certain gap for movement. When the filter plate 42 is subjected to force, its two ends can swing up and down in the rotating cavity, thereby changing the tilt angle of the filter plate 42 in the filter box 43 to adapt to different filtration needs.

[0032] A baffle 44 is fixed on the outer wall of one side of the treatment pipe 41. One end of the baffle 44 extends to the bottom of the filter box 43. When the filter plate 42 rotates to a specific angle, its bottom will contact the top surface of the baffle 44. The baffle 44 supports and limits the filter plate 42, so that the filter plate 42 and the central axis of the treatment pipe 41 form an angle α. The angle α is between 70° and 90°. When the angle α is 90°, the filter plate 42 is in a parallel state and perpendicular to the central axis of the treatment pipe 41. At this time, the filtration area is the largest, which is suitable for filtering greywater with high impurity content. When the angle α is less than 90° and greater than or equal to 70°, the filter plate 42 is in an inclined state, which can speed up the water flow and is suitable for scenarios with low impurity content and the need to improve treatment efficiency.

[0033] One of the rotating cavities is equipped with a lifting component. The bottom of the lifting component is fixed to the inner wall of the rotating cavity, and the top is connected to the end of the filter plate 42. By extending and retracting the lifting component, the end of the filter plate 42 can be moved up and down in the rotating cavity, thereby adjusting the tilt angle of the filter plate 42 and realizing the switching between parallel and tilted states. No manual adjustment is required, which improves the ease of operation of the pretreatment component.

[0034] like Figure 3 , Figures 6 to 8 As shown, the lifting component includes a lifting housing 501 and a lifting plate 502. The lifting housing 501 is fixedly installed on the outer wall of the baffle 44 by bolts. The interior of the lifting housing 501 is a hollow structure. The lower part of the lifting plate 502 passes through the lifting housing 501, and the lifting plate 502 can slide up and down along the inner wall of the lifting housing 501. The top of the lifting plate 502 is rotatably connected to the end of the filter plate 42 through a rotating shaft. When the lifting plate 502 moves up and down, the end of the filter plate 42 can be driven to move synchronously through the rotating shaft.

[0035] Two sets of symmetrically distributed lifting sleeves 503 are fixed to the bottom of the lifting housing 501. The lifting sleeves 503 are hollow inside and open at both ends. A lifting rod 504 is vertically fixed to the bottom of the lifting plate 502. The number of lifting rods 504 is the same as that of the lifting sleeves 503, and their positions correspond one-to-one. The end of the lifting rod 504 away from the lifting plate 502 passes through the lifting sleeve 503. A first sealing block 505 is fixed to the end of the lifting rod 504 that passes through the lifting sleeve 503. The outer wall of the first sealing block 505 is in close contact with the inner wall of the lifting sleeve 503 to prevent fluid leakage in the lifting sleeve 503 and to ensure that the lifting rod 504 can move stably along the axial direction of the lifting sleeve 503.

[0036] An injection sleeve 506 is fixed on the outer wall of one side of the filter box 43. The injection sleeve 506 is vertically arranged and hollow inside. An electric cylinder 507 is fixed above the injection sleeve 506 by a bracket. The telescopic end of the electric cylinder 507 extends vertically downward and a second sealing block 508 is fixed at the end. The telescopic end of the electric cylinder 507 passes through the injection sleeve 506. The outer wall of the second sealing block 508 is in close contact with the inner wall of the injection sleeve 506, which can block the vertical flow of fluid in the injection sleeve 506 and move up and down in the injection sleeve 506 with the telescopic movement of the electric cylinder 507.

[0037] The bottom of the injection sleeve 506 is connected to the side wall of the lifting sleeve 503 through the connecting pipe 38. The two ends of the connecting pipe 38 are respectively connected to the interior of the injection sleeve 506 and the lifting sleeve 503. The injection sleeve 506, the connecting pipe 38 and the lifting sleeve 503 are filled with hydraulic oil, forming a closed linkage structure. When the telescopic end of the electric cylinder 507 extends downward, the second sealing block 508 squeezes the hydraulic oil in the injection sleeve 506. The hydraulic oil flows into the lifting sleeve 503 through the connecting pipe 38, pushing the first sealing block 505 to drive the lifting rod 504 to move upward, thereby causing the lifting plate 502 to lift the filter plate 42. When the telescopic end of the electric cylinder 507 retracts upward, the hydraulic oil flows back, and the lifting rod 504 and the lifting plate 502 move downward under the action of gravity, and the filter plate 42 adjusts its angle accordingly.

[0038] A sealing plate 509 is provided on the top of the lifting plate 502. A slot adapted to the sealing plate 509 is opened in the middle of the top of the lifting plate 502. The lower part of the sealing plate 509 is locked in the slot. Multiple sets of springs are connected between the sealing plate 509 and the lifting plate 502. The springs are evenly distributed around the slot. The top of the sealing plate 509 abuts against the bottom of the filter plate 42. When the lifting plate 502 moves the sealing plate 509 up and down, the springs can buffer the force between the sealing plate 509 and the filter plate 42 through their own elastic deformation, avoiding direct rigid contact between the two and causing wear.

[0039] The lifting component and the discharge pipe 35 are installed on both sides of the water inlet pipe 31, and the two are spatially offset to avoid mutual interference, ensuring that the lifting action of the lifting component and the discharge function of the discharge pipe 35 operate independently.

[0040] Horizontally extending rotating rods 510 are fixed on the outer walls of both sides of the connecting pipe 38. A rotating platform 511 is rotatably installed at corresponding positions on both sides of the support frame 11. The end of the rotating rod 510 away from the connecting pipe 38 is fixedly connected to the rotating platform 511. A motor is bolted to one side of the support frame 11. The output shaft of the motor is fixedly connected to the central shaft of one of the rotating platforms 511. When the motor starts, the output shaft drives the rotating platform 511 to rotate. The rotating platform 511 drives the connecting pipe 38 and the entire pretreatment section to rotate synchronously through the rotating rod 510, so that the pretreatment section can switch between vertical and slope states.

[0041] When the pretreatment section is in a vertical state, the central axis of the treatment pipe 41 is vertical. At this time, the filter plate 42 maintains a 90° angle with the central axis of the treatment pipe 41 under the action of the lifting component, and is in a planar state, perpendicular to the water flow direction, which can effectively intercept impurities in the water. When the pretreatment section is switched to a slope state, the central axis of the treatment pipe 41 forms a certain tilt angle with the horizontal plane. The filter plate 42 tilts synchronously with the tilt of the treatment pipe 41. Compared with the planar state, the tilted filter plate 42 greatly increases the contact area with the greywater, which can accommodate a larger volume of greywater to pass through the filtration area at the same time, effectively increasing the water treatment capacity per unit time and adapting to the treatment needs of high water flow scenarios. At this time, under the combined action of gravity and the lifting component, the filter plate 42 forms an angle between 70° and 90° with the central axis of the treatment pipe 41.

[0042] The pretreatment unit also includes a water storage tank 45, which is fixedly installed on the support frame 11 by a bracket. The inlet of the water storage tank 45 is connected to the outlet pipe 32 through a pipe, and a valve is installed on the pipe. The pretreated water discharged from the outlet pipe 32 can flow into the water storage tank 45 for temporary storage through the pipe. The outlet of the water storage tank 45 is connected to the first water storage tank 22 through a pipe, and a water pump is installed on the pipe. The water pump transports the water in the water storage tank 45 to the first water storage tank 22, providing a stable water source for the ultrafiltration unit.

[0043] like Figure 2 , Figures 9 to 12 As shown, the ultrafiltration membrane tube includes a main tube 601 and a main cover plate 602. The main tube 601 is vertically arranged, and the main cover plate 602 is bolted to the top opening of the main tube 601. The two are sealed by a sealing ring to form a closed ultrafiltration chamber. An ultrafiltration membrane element 603 is vertically arranged inside the ultrafiltration chamber. The top end of the ultrafiltration membrane element 603 is connected to the flushing section, and the bottom end is connected to the backwash section, ensuring that the water flow of the flushing section and the backwash section can directly act on the ultrafiltration membrane element 603. An annular gap is left between the outer wall of the ultrafiltration membrane element 603 and the inner wall of the main tube 601 to form a water collection chamber. This water collection chamber is used to collect the permeate after filtration by the ultrafiltration membrane element 603.

[0044] The rinsing section is equipped with multiple sets of first connecting pipes 604. One end of each first connecting pipe 604 is connected to the outlet of the first water storage tank 22 via a pipe. A valve is installed on the pipe to control the flow between the first water storage tank 22 and the first connecting pipe 604. The water temporarily stored in the first water storage tank 22 flows evenly into the ultrafiltration membrane element 603 through the multiple sets of first connecting pipes 604 under its own gravity or with the assistance of a water pump. During the flow of the water inside the ultrafiltration membrane element 603, impurities are trapped by the membrane element, and the filtered water permeates into the outer water collection chamber.

[0045] Multiple sets of first drainage tanks 605 are fixed on the outer wall of the bottom of the main pipe 601, and the first drainage tanks 605 are evenly distributed along the circumference of the main pipe 601. Multiple sets of water outlets are opened on the side wall of the bottom of the main pipe 601. The water outlets are connected to the water collection chamber and the interior of the first drainage tanks 605. The produced water collected in the water collection chamber flows into the first drainage tanks 605 through the multiple sets of water outlets and converges. Second connecting pipes 606 are respectively connected to the outer walls on both sides of the first drainage tanks 605. A wastewater tank is placed on the support frame 11 on one side of the main pipe 21. One set of second connecting pipes 606 is connected to the second water storage tank 23 through a pipe. A valve is installed on the pipe to transport qualified produced water to the second water storage tank 23. Another set of second connecting pipes 606 is connected to the wastewater tank through a pipe. A valve is also installed on the pipe. When it is necessary to discharge cleaning wastewater, it can be introduced into the wastewater tank for temporary storage through this pipe.

[0046] The rinsing section includes a funnel platform 607 and a rinsing nozzle 608 fixedly mounted on the top of the main cover plate 602. The funnel platform 607 has a funnel-shaped cross-section with the opening facing upwards. The rinsing nozzle 608 is located at the center of the funnel platform 607 and is bolted to the main cover plate 602. The top ends of multiple sets of first connecting pipes 604 are distributed on the platform surface of the funnel platform 607 and are arranged around the circumference of the rinsing nozzle 608. The bottom ends of the first connecting pipes 604 extend through the main cover plate 602 into the ultrafiltration chamber. The water inlet of the rinsing nozzle 608 is connected to one of the water storage tanks 24 through a pipe. A water pump and valve are installed on the pipe. The clean water in the water storage tank 24 can be pumped to the rinsing nozzle 608 through the pipe under the action of the water pump. After being sprayed out by the nozzle, the ultrafiltration membrane core 603 is rinsed.

[0047] The backflushing section includes an installation sleeve 609 fixedly installed inside the main tube 601. The installation sleeve 609 is in a vertical state, and an installation cover 610 is fixed to its top by bolts. The inner wall of the installation cover 610 fits against the top of the installation sleeve 609, and the two form a closed installation cavity after connection. The bottom end of the ultrafiltration membrane element 603 is stuck in the installation cover 610, and the interior of the ultrafiltration membrane element 603 is in communication with the installation cavity, so that the water flow in the installation cavity can enter the interior of the ultrafiltration membrane element 603.

[0048] Multiple sets of third connecting pipes 611 are connected to the outer wall of the bottom of the mounting sleeve 609. The third connecting pipes 611 are evenly distributed along the circumference of the mounting sleeve 609. A second drainage tank 612 is set directly below the first drainage tank 605. The second drainage tank 612 is fixed to the main body box 21 by a bracket. The water inlet of the second drainage tank 612 is connected to multiple sets of third connecting pipes 611 through a pipe, and the water outlet is connected to the wastewater tank through a pipe. Valves are installed on the pipes. The water outlet of the wastewater tank is connected to the sedimentation tank 12 through a pipe. A water pump is equipped on the pipe, which can transport the flushing wastewater collected in the wastewater tank to the sedimentation tank 12 for further treatment.

[0049] The backwash section also includes a backwash nozzle 613, which is fixedly installed at the center of the bottom of the main tube 601 by bolts. The water outlet of the backwash nozzle 613 extends vertically upward and passes through the bottom opening of the mounting sleeve 609 to enter the mounting sleeve 609. The water outlet of the backwash nozzle 613 faces upward and can directly spray water onto the bottom end of the ultrafiltration membrane element 603. The water inlet of the backwash nozzle 613 is connected to another set of water storage tanks 24 through a pipe. A water pump and valve are installed on the pipe. The water after ultrafiltration in the water storage tank 24 is transported to the backwash nozzle 613 through the pipe under the drive of the water pump. After being sprayed out by the backwash nozzle 613, it impacts the inside of the ultrafiltration membrane element 603 upward and removes the impurities that clog the membrane element.

[0050] A flushing pipe 614 is fixed on the inner wall of the main tube 601. The flushing pipe 614 is spirally distributed around the inner wall of the main tube 601 and is completely located in the water collection cavity between the ultrafiltration membrane core 603 and the main tube 601. Multiple sets of flushing nozzles 615 are opened on the inner side wall of the flushing pipe 614 facing the ultrafiltration membrane core 603. The multiple sets of flushing nozzles 615 are evenly arranged along the spiral path of the flushing pipe 614, and the spacing between adjacent flushing nozzles 615 is consistent to ensure that the water flow can cover the entire outer wall of the ultrafiltration membrane core 603. Both ends of the flushing pipe 614 are connected to one of the water storage tanks 24 through pipes. A water pump and a valve are respectively installed on the pipes. The clean water in the water storage tank 24 can flow into the flushing pipe 614 from one end under the drive of the water pump, flow through the entire spiral tube body and return from the other end to form a circulating water flow, or, as needed, only one end of the water inlet is opened to ensure that there is always sufficient water flow in the flushing pipe 614.

[0051] The rinsing nozzle 615 is inclined along the tangential direction of the main tube 601, with its opening facing the outer wall of the ultrafiltration membrane element 603. When the clean water in the water storage tank 24 enters the rinsing pipe 614, it will be sprayed tangentially onto the surface of the ultrafiltration membrane element 603 through multiple sets of rinsing nozzles 615. When the water flow impacts the outer wall of the membrane element, it can generate a lateral scouring force on the attached impurities, peeling the impurities off the surface of the membrane element. The peeled impurities flow together with the water flow in the water collection chamber through the outlet at the bottom of the main tube 601 into the first drainage tank 605, and finally discharged through the corresponding pipe, so as to avoid the accumulation of impurities in the water collection chamber and affect the quality of the produced water.

[0052] like Figure 2 As shown, the disinfection unit includes a disinfection tank 13 and multiple sets of ultraviolet lamps 14. The disinfection tank 13 is connected to a second water storage tank 23 and external water-using equipment via pipes. A water pump and valve are installed on the pipe between the inlet of the disinfection tank 13 and the outlet of the second water storage tank 23. The ultrafiltration water temporarily stored in the second water storage tank 23 can be transported to the disinfection tank 13 through the pipes driven by the water pump. The outlet of the disinfection tank 13 is connected to external water-using equipment via pipes, which are also equipped with valves to control the delivery and shut-off of the disinfected water, meeting the water needs of different scenarios.

[0053] Multiple sets of ultraviolet lamps 14 are installed inside the disinfection tank 13. The ultraviolet lamps 14 are fixed to the inner wall or central axis of the disinfection tank 13 by brackets, and the multiple sets of ultraviolet lamps 14 are evenly distributed along the length of the disinfection tank 13 to ensure that the reclaimed water in different areas of the disinfection tank 13 can be exposed to ultraviolet irradiation. The ultraviolet lamps 14 are connected to an external power source. After the reclaimed water enters the disinfection tank 13, the ultraviolet lamps 14 are turned on. The ultraviolet irradiation destroys the nucleic acid structure of bacteria, viruses and other microorganisms in the water, thereby achieving sterilization and disinfection, so that the reclaimed water meets the sanitary standards for reuse. A liquid level sensor can also be installed inside the disinfection tank 13. When the reclaimed water in the tank reaches the preset liquid level, the ultraviolet lamps 14 can be automatically triggered to turn on and automatically turn off after disinfection is completed, improving the convenience of operation.

[0055] Preliminary preparations: Confirm that all components of the device are connected correctly, that the support frame 11 is placed securely, and that there are no foreign objects in the sedimentation tank 12, water storage tank 24, and wastewater tank; check that all pipe valves are closed, and that the external power supply to electrical components such as the water pump, electric cylinder 507, and ultraviolet lamp 14 is normal; complete the device initialization through the external controller.

[0056] Water intake and preliminary sedimentation: Open the water inlet valve of sedimentation tank 12 and introduce domestic or industrial wastewater into sedimentation tank 12. Let it stand for 30-60 minutes until large particles of impurities in the water settle. Then close the water inlet valve of sedimentation tank 12. Open the water pump and pipeline valve between sedimentation tank 12 and water inlet pipe 31 to transport the pre-sedied wastewater to the water inlet pipe 31 of the pretreatment section.

[0057] Pretreatment unit operation: Based on the greywater flow rate and impurity content, the controller starts the motor on one side of the support frame 11 to adjust the state of the pretreatment unit. If the greywater impurity content is high and the flow rate is normal, the pretreatment unit is controlled to maintain a vertical state (the filter plate 42 is in a flat state). The suspended impurities are intercepted by the fence structure of the isolation rod 34, and the impurities fall into the waste bin 37 through the discharge pipe 35. If the greywater flow rate is large and the impurity content is low, the pretreatment unit is controlled to switch to a slope state (the treatment pipe 41 is at a 30° angle to the horizontal plane, and the filter plate 42 is tilted with the treatment pipe 41) to increase the filtration contact area and increase the treatment capacity. The pretreated greywater flows into the water storage tank 45 through the outlet pipe 32 for temporary storage, and then is pumped to the first water storage tank 22.

[0058] Ultrafiltration section: Open the valve between the first water storage tank 22 and the ultrafiltration membrane tube. The reclaimed water enters the ultrafiltration membrane core 603 through multiple sets of first connecting pipes 604. Impurities are intercepted. After filtration, the product water permeates into the water collection chamber and flows into the first drain tank 605 through the water outlet at the bottom of the main pipe 601. Open the valve between the first drain tank 605 and the second water storage tank 23 to introduce qualified product water into the second water storage tank 23 for temporary storage.

[0059] Ultrafiltration membrane tube cleaning: When the device has been running continuously for 72 hours or when the flux of the ultrafiltration membrane element 603 is detected to drop to 50% of the initial value, close the inlet valves of the first water storage tank 22 and the ultrafiltration membrane tube, and start the cleaning process—open the valves of the water storage tank 24 and the flushing and backwashing sections and the corresponding water pumps. The flushing nozzle 608 sprays clean water from top to bottom (water pressure 0.3MPa), and the backwashing nozzle 613 sprays clean water from bottom to top (water pressure 0.35MPa). At the same time, the water pump of the flushing pipe 614 is turned on, and the flushing nozzle 615 flushes the outer wall of the ultrafiltration membrane element 603 tangentially. The cleaning wastewater flows into the wastewater tank through the third connecting pipe 611 and the second drain tank 612. Finally, the wastewater in the wastewater tank is transported to the sedimentation tank 12 for secondary treatment by the water pump. After cleaning for 15 minutes, close all cleaning-related valves and water pumps.

[0060] Disinfection and reuse: Open the water pump and valve between the second water storage tank 23 and the disinfection tank 13 to introduce the ultrafiltration water into the disinfection tank 13. When the liquid level sensor in the disinfection tank 13 detects that the water has reached the preset level, the ultraviolet lamp 14 will be automatically turned on and irradiated for 30 minutes to complete the sterilization and disinfection. After disinfection, open the valve between the disinfection tank 13 and the external water-using equipment (toilet flushing pipes, greening irrigation pipes, etc.) to deliver the qualified water to the reuse scenario. Adjust the valve as needed to control the water output.

[0061] It should be noted that, in order to simplify the description of the present invention and thus help to understand one or more embodiments of the invention, multiple features may sometimes be grouped into one embodiment, drawing or description thereof in the foregoing description of the embodiments of the present invention.

Claims

1. An integrated water reuse device based on tubular ultrafiltration membrane, comprising a support frame (11), characterized in that: The support frame (11) is provided with a pretreatment section, an ultrafiltration section and a disinfection section. A sedimentation tank (12) for preliminary sedimentation to remove large particulate impurities is provided on one side of the support frame (11). The sedimentation tank (12) is connected to the water inlet of the pretreatment section, the water outlet of the pretreatment section is connected to the water inlet of the ultrafiltration section, and the water outlet of the ultrafiltration section is connected to the water inlet of the disinfection section. The connection of each component forms a greywater treatment path. The ultrafiltration unit includes a main body box (21) and multiple sets of ultrafiltration membrane tubes. The ultrafiltration membrane tubes are clamped on the main body box (21). A first water storage tank (22) is provided on the main body box (21). The first water storage tank (22) is connected to the pretreatment unit and the water inlet end of the multiple sets of ultrafiltration membrane tubes respectively. One end of the ultrafiltration membrane tube is provided with a flushing part for flushing the membrane from top to bottom and a backwashing part for flushing the membrane from bottom to top. The flushing part and the backwashing part form a cooperative cleaning structure. Below the main body box (21), there is also a second water storage tank (23) and multiple sets of water storage tanks (24). The second water storage tank (23) is connected to the multiple sets of water storage tanks (24), wherein the multiple sets of water storage tanks (24) are connected to the rinsing section, and the other multiple sets of water storage tanks (24) are connected to the backwash section. The second water storage tank (23) is connected to the disinfection section.

2. The integrated wastewater reuse device based on tubular ultrafiltration membrane according to claim 1, characterized in that: The pretreatment unit includes an inlet pipe (31) and an outlet pipe (32) and multiple sets of pretreatment components. The multiple sets of pretreatment components are located between the inlet pipe (31) and the outlet pipe (32), and the central axes of the three coincide to form a cylindrical structure. The water inlet pipe (31) is connected to the sedimentation tank (12) via a water pump. An isolation sleeve (33) is provided above the water inlet pipe (31). The isolation sleeve (33) passes through the water inlet pipe (31). Multiple sets of isolation rods (34) are provided inside the isolation sleeve (33). The isolation rods (34) are inclined. The multiple sets of isolation rods (34) form a fence structure for intercepting suspended impurities in the water. The fence structure is inclined. A discharge pipe (35) is provided on one side of the water inlet pipe (31). The isolation sleeve (33) has a discharge port (36) corresponding to the discharge pipe (35). The discharge pipe (35) is connected to the isolation sleeve (33) through the discharge port (36). The discharge pipe (35) is an inclined device with an inclination slope that is consistent with the inclination slope of the fence structure. The water inlet pipe (31) is also detachably equipped with a waste bin (37) for collecting and intercepting impurities, and the discharge pipe (35) is connected to the waste bin (37).

3. The integrated wastewater reuse device based on tubular ultrafiltration membrane according to claim 2, characterized in that: The pretreatment component is connected to the adjacent pretreatment component via a connecting pipe (38); The pretreatment component includes a treatment pipe (41) and a filter plate (42). The treatment pipe (41) is connected to the connecting pipe (38). The pretreatment component near the inlet pipe (31) and the outlet pipe (32) is connected to both through the treatment pipe (41). A filter box (43) is provided on the treatment pipe (41). The filter box (43) runs through the treatment pipe (41). The filter plate (42) is located inside the filter box (43) and is rotatably connected to the filter box (43). A rotating cavity is formed between the processing tube (41) and the two ends of the filter box (43). The two ends of the filter plate (42) are inserted into the two sets of rotating cavities. The two ends of the filter plate (42) swing up and down in the rotating cavity respectively. A baffle (44) is provided on one side of the processing tube (41). The filter plate (42) forms an angle α between the baffle (44) and the central axis of the processing tube (41). The angle α is between 70° and 90°. The filter plate (42) forms a parallel state and an inclined state. One of the rotating cavities is equipped with a lifting component.

4. The integrated wastewater reuse device based on tubular ultrafiltration membrane according to claim 3, characterized in that: The lifting component includes a lifting housing (501) and a lifting plate (502). The lifting housing (501) is installed on the outside of the baffle (44), and the lifting plate (502) is inserted inside the lifting housing (501). The top of the lifting rod (504) is rotatably connected to the filter plate (42). The bottom of the lifting housing (501) is provided with multiple sets of lifting sleeves (503), and the bottom of the lifting plate (502) is provided with a lifting rod (504). The lifting rod (504) passes through the lifting sleeve (503), and one end of the lifting rod (504) is provided with a first sealing block (505). The first sealing block (505) passes through the lifting sleeve (503) and contacts the inner wall of the lifting sleeve (503). An injection sleeve (506) is provided on one side of the filter box (43), and an electric cylinder (507) is provided above the injection sleeve (506). A second sealing block (508) is provided at the telescopic end of the electric cylinder (507). The telescopic end of the electric cylinder (507) passes through the injection sleeve (506), and the inner wall of the second sealing block (508) contacts the inner wall of the injection sleeve (506). The injection sleeve (506) is connected to the lifting sleeve (503) through the connecting pipe (38), and the three are filled with hydraulic oil to form a linkage structure.

5. The integrated wastewater reuse device based on a tubular ultrafiltration membrane according to claim 3, characterized in that: The top of the lifting plate (502) is provided with a sealing plate (509). The top of the lifting plate (502) is provided with a slot. The sealing plate (509) is locked in the slot and connected to the lifting plate (502) by multiple sets of springs. The sealing plate (509) abuts against the bottom of the filter plate (42). The lifting component and the discharge pipe (35) are located on both sides of the water inlet pipe (31); Rotating rods (510) are provided on both sides of the connecting pipe (38), and rotating tables (511) are rotatably provided on both sides of the support frame (11). The rotating rods (510) are connected to the rotating tables (511). A motor is provided on one side of the support frame (11), and the motor shaft is connected to the rotating table (511). The pretreatment section forms a vertical state and a slope state. When the pretreatment section is in a vertical position, the filter plate (42) is in a planar position; When the pretreatment section is in a sloped state, the filter plate (42) is in an inclined state; The pretreatment unit also includes a water storage tank (45), which is mounted on the support frame (11) and is connected to the water outlet pipe (32) and the first water storage tank (22).

6. The integrated wastewater reuse device based on tubular ultrafiltration membrane according to claim 1, characterized in that: The ultrafiltration membrane tube includes a main tube (601) and a main cover plate (602). The main cover plate (602) covers the top of the main tube (601) to form an ultrafiltration chamber. An ultrafiltration membrane core (603) is provided in the ultrafiltration chamber. The two ends of the ultrafiltration membrane core (603) are respectively connected to the flushing part and the backwashing part. A water collection chamber for collecting the water produced after filtration by the ultrafiltration membrane core (603) is formed between the ultrafiltration membrane core (603) and the main tube (601). The rinsing section is provided with multiple sets of first connecting pipes (604), which are connected to the first water storage tank (22). The water in the first water storage tank (22) enters the ultrafiltration membrane core (603) through the multiple sets of first connecting pipes (604). The bottom of the main pipe (601) is provided with multiple sets of first drainage tanks (605), and the bottom of the main pipe (601) is provided with multiple sets of water outlets. The water collection chamber is connected to the first drainage tanks (605) through multiple sets of water outlets. The first drainage tanks (605) are respectively provided with second connecting pipes (606) on both sides. The main pipe (21) is provided with a wastewater tank on one side. One set of second connecting pipes (606) is connected to the second water storage tank (23), and the other set of second connecting pipes (606) is connected to the wastewater tank.

7. The integrated wastewater reuse device based on a tubular ultrafiltration membrane according to claim 6, characterized in that: The rinsing section includes a funnel platform (607) and a rinsing nozzle (608) disposed on the top of the main cover plate (602). The rinsing nozzle (608) is located inside the funnel platform (607) and installed on the main cover plate (602). Multiple sets of first connecting pipes (604) are located on the funnel platform (607) and arranged around the rinsing nozzle (608). The rinsing nozzle (608) is connected to one of the sets of water storage tanks (24). The backflush section includes an installation sleeve (609) provided inside the main tube (601), and an installation cover (610) is provided on the top of the installation sleeve (609). The two are connected to form an installation cavity. One end of the ultrafiltration membrane core (603) is inserted into the installation cover (610), and the ultrafiltration membrane core (603) communicates with the installation cavity. The bottom of the mounting sleeve (609) is provided with multiple sets of third connecting pipes (611), and a second drainage tank (612) is provided below the first drainage tank (605). The second drainage tank (612) is connected to the multiple sets of the third connecting pipes (611) and the wastewater tank. The wastewater tank is connected to the sedimentation tank (12).

8. The integrated wastewater reuse device based on a tubular ultrafiltration membrane according to claim 7, characterized in that: The backflush section also includes a backflush nozzle (613), which is installed at the bottom of the main body pipe (601). The water outlet of the backflush nozzle (613) is located inside the mounting sleeve (609). The water outlet direction of the backflush nozzle (613) is upward. The backflush nozzle (613) is connected to another set of the water storage tanks (24).

9. The integrated wastewater reuse device based on a tubular ultrafiltration membrane according to claim 8, characterized in that: The main tube (601) is provided with a flushing tube (614), which is spirally arranged. Multiple sets of flushing nozzles (615) are opened on the inner side of the flushing tube (614). The flushing nozzles (615) are located in the water collection cavity. Both ends of the flushing tube (614) are connected to one of the water storage tanks (24). The rinsing nozzle (615) is inclined along the tangential direction of the main tube (601), and the rinsing direction of the rinsing nozzle (615) is towards the ultrafiltration membrane core (603).

10. The integrated wastewater reuse device based on tubular ultrafiltration membrane according to claim 1, characterized in that: The disinfection unit includes a disinfection tank (13) and multiple sets of ultraviolet lamps (14), wherein the disinfection tank (13) is connected to the second water storage tank (23) and external water-using equipment; Multiple sets of ultraviolet lamps (14) are installed inside the disinfection tank (13).

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