An industrial wastewater treatment device based on membrane filtration

Abstract

This invention belongs to the technical field of wastewater treatment devices and discloses an industrial wastewater treatment device based on membrane filtration. The device uses a frame as the main support, with an inlet chamber and a high-pressure water pump at the top. Multiple slots are evenly arranged longitudinally, each equipped with an independent filter membrane mechanism. A concentrated wastewater drainage pipe and an outlet tank are also included. The filter membrane mechanism is slidably installed in the slots via a U-shaped slider. It is equipped with a filter chamber containing the filter membrane, a rotating flap, and inlet, concentrated wastewater, and outlet pipes. The high-pressure water pump drives the wastewater to complete multi-stage series filtration. The trapped pollutants are discharged with the concentrated wastewater, while the filtered clean water flows into the outlet tank. Each filter membrane mechanism can be independently disassembled and maintained without shutting down the entire machine. Membrane surface cleaning can be achieved via the flap. The device boasts high space utilization, convenient operation and maintenance, and stable operation, making it suitable for continuous industrial wastewater treatment.

Description

Technical Field

[0001] This invention belongs to the technical field of wastewater treatment devices, specifically relating to an industrial wastewater treatment device based on membrane filtration. Background Technology

[0002] With the continuous improvement of my country's industrial system, the production scale of industries such as printing and dyeing, chemicals, electroplating, food processing, and machinery manufacturing has continued to expand, and the amount of industrial wastewater generated has also steadily increased. At the same time, national and local environmental emission standards are becoming increasingly stringent, placing higher demands on the treatment efficiency, effluent stability, and ease of operation and maintenance of industrial wastewater. Membrane filtration technology, with its core advantages such as high separation precision, stable treatment effect, small footprint, no secondary chemical pollution, and wide adaptability to various water qualities, has become one of the core technologies in the field of advanced industrial wastewater treatment and reclaimed water reuse. Related membrane filtration devices have also become a key focus of research and development in the environmental protection equipment field. Currently, industrial membrane filtration devices on the market have formed various mature structures such as spiral wound, tubular, and flat-plate types. Vertical multi-stage series structures, due to their high space utilization and ability to achieve graded treatment, have been widely used in small-to-medium volume industrial wastewater treatment scenarios. Related research and development in the industry mainly focuses on improving filtration efficiency, reducing membrane fouling rates, simplifying operation and maintenance processes, and reducing device energy consumption.

[0003] In the practical application of existing vertical multistage membrane filtration devices, some technical issues still exist that require optimization. Most existing vertical multistage membrane filtration devices adopt an integrated series structure, with each membrane unit rigidly connected to the others via fixed flanges and rigid pipelines. When a single-stage membrane becomes clogged or damaged and needs replacement or maintenance, the entire treatment unit must be shut down, and the corresponding pipelines and flanges disassembled. This not only results in cumbersome and time-consuming maintenance procedures but also directly interrupts the wastewater treatment process, making it unsuitable for the 24-hour continuous operation requirements of industrial production lines. Regarding anti-fouling design, most existing devices require additional external power mechanisms such as drive motors and air sources for membrane cleaning, increasing overall energy consumption and structural complexity, as well as the probability of equipment failure. Some non-powered cleaning structures only cover the circumferential filtration surface of the membrane, failing to effectively clean the bottom of the filter chamber, easily creating cleaning dead zones. This leads to accelerated localized clogging of the membrane and shortens its overall lifespan. In addition, most existing multi-stage series devices use filter membranes with uniform pore size, which cannot form a reasonable gradient filtration system. The filtration load distribution of each filter membrane is uneven, the front-end filter membrane is prone to rapid fouling due to the concentrated interception of pollutants, and the filtration performance of the back-end filter membrane cannot be fully utilized. Summary of the Invention

[0004] In view of the problems mentioned in the background art, the purpose of the present invention is to provide an industrial wastewater treatment device based on membrane filtration.

[0005] To achieve the above-mentioned technical objectives, the technical solution adopted by the present invention is as follows: An industrial wastewater treatment device based on membrane filtration includes a base frame and an inlet chamber installed on top of the base frame. The inlet chamber is equipped with a high-pressure water pump for water inlet. The base frame is longitudinally equipped with multiple slots, in which filter membrane mechanisms are installed. The base frame is also equipped with a concentrated water integrated drain pipe. The filter membrane mechanism includes a slider that is slidably installed in the slot. The slider is U-shaped, with both sides of the slider placed in the slot. A filter chamber is fixedly installed at the non-sliding end of the slider. The filter chamber is equipped with an inlet pipe, a concentrate pipe, and an outlet pipe. The inlet pipe is connected to the outlet end of the inlet chamber. The outlet pipe is connected to the concentrated water integrated drain pipe. The outlet pipe is connected to the inlet end of the inlet pipe on another filter membrane mechanism located on the lower side. The filter chamber is sealed at the top with a cover. Several locking buckles are evenly installed between the cover and the filter chamber. A filter compartment is fixedly installed on the cover. The filter compartment is located inside the filter chamber. Filter holes are opened on the periphery and bottom of the filter compartment. A hinge is rotatably installed between the filter compartment and the cover via a bearing. Filter membranes are fixedly installed on the periphery and bottom of the filter compartment. The filter compartment has a water inlet and a water outlet. The water inlet is connected to the output end of the water inlet pipe, and the water outlet is connected to the input end of the concentrate pipe. The filter membrane does not block the water inlet and the water outlet. The base frame is equipped with a water outlet tank, which is connected to the water outlet pipe located at the bottom.

[0006] Further specified, the end of the page turner is provided with a groove, a displacement block is slidably installed in the groove, a spring assembly is installed between the displacement block and the groove, and a scraper is installed at the other end of the displacement block. The scraper contacts the filter membrane and can adaptively compensate for slight wear of the filter membrane, ensuring that the scraper is always evenly attached to the surface of the filter membrane. This avoids hard contact that could scratch the filter membrane and ensures the long-term stability of the membrane cleaning effect. At the same time, the structure is simple and consumes no additional energy.

[0007] Furthermore, the base frame is equipped with casters at the bottom, which enables flexible movement and leveling of the device. This facilitates on-site installation, relocation, and maintenance of the device, while ensuring the stability of the device during operation and adapting to different on-site installation conditions.

[0008] Furthermore, a counterweight is installed on the other side of the base frame opposite to where the water outlet tank is installed. This counterweight can balance the weight of the water outlet tank and the filter membrane mechanism, preventing the device from tipping over due to a shift in the center of gravity and significantly improving the safety of the device during operation and movement.

[0009] Furthermore, all pipe connections are made using a self-sealing quick-connect structure and can be adapted to the installation of reducers, greatly simplifying the pipe assembly and disassembly process. Connection and disassembly can be completed without tools. It can also be adapted to reducers, allowing for quick adjustment to different water qualities and treatment loads, and has strong on-site adaptability.

[0010] Furthermore, the water outlet tank contains filter media specifically designed for the current wastewater, which can perform deep purification treatment on the filtered water, further improving the quality of the effluent and adapting to higher standards of discharge or reuse requirements, thus expanding the applicable scenarios of the device.

[0011] Further defined, the top of the rotating blade is directly opposite the inlet, and is equipped with several impact drive blades with an angle of attack. The bottom of the rotating blade extends axially with a bottom scraper arm, and the end of the bottom scraper arm is fixed with a bottom scraper blade that fits against the filter membrane on the lower side of the filter chamber. The bottom scraper blade rotates synchronously with the scraper blades on the periphery, improving the utilization rate of the inlet water kinetic energy and ensuring that the rotating blade can still be stably driven to rotate even at low inlet water flow rates. The addition of the bottom scraper arm and bottom scraper blade fills in the dead corners of the filter surface on the lower side of the filter chamber, realizes synchronous cleaning of the entire filter surface, and further reduces the membrane fouling rate.

[0012] Further defining the self-sealing quick-connect structure, it includes mutually compatible quick-connect male and female connectors. The quick-connect male connector has a built-in spring-loaded self-sealing valve core, and the quick-connect female connector is fitted with a pneumatic locking ring on its outer side. Each of the inlet pipe, concentrate pipe, and outlet pipe is connected in series with an independent pneumatic shut-off valve. All pneumatic shut-off valves and pneumatic locking rings are electrically connected to the automatic control unit. In conjunction with the independent pneumatic shut-off valves and the automatic control unit, automatic isolation, unlocking, and locking of the single-stage filter membrane mechanism can be achieved, providing complete structural support for online replacement without shutting down the system, significantly reducing the difficulty of operation and maintenance, and ensuring continuous operation of the device.

[0013] Furthermore, the multiple sets of filter membrane mechanisms arranged longitudinally from top to bottom along the base frame have a gradient setting where the filtration accuracy of the internal filter membranes increases progressively. The filter membrane mechanism at the top layer has the largest pore size, while the filter membrane mechanism at the bottom layer has the smallest pore size, forming a graded filtration system. This system rationally distributes the filtration load of each filter membrane level, avoids the rapid clogging of the front-end filter membranes due to concentrated trapping of pollutants, and fully utilizes the filtration performance of each filter membrane level, thereby extending the overall filter membrane replacement cycle.

[0014] Furthermore, the base frame is equipped with a differential pressure sensor at the position corresponding to each group of filter membrane units. The high-pressure detection end of the differential pressure sensor is connected to the inlet pipe of the corresponding filter membrane unit, and the low-pressure detection end is connected to the outlet pipe of the corresponding filter membrane unit. All differential pressure sensors are electrically connected to an external automatic control unit, which can monitor the inlet and outlet water pressure difference of a single-stage filter membrane in real time and accurately determine the fouling status of the corresponding filter membrane. This provides quantitative data support for filter membrane replacement and maintenance, achieves precise operation and maintenance, and avoids unnecessary downtime.

[0015] The beneficial effects of using the present invention are as follows: 1. This device adopts an independent slider-type filter membrane mechanism design, combined with a self-sealing quick-connect structure. The single-stage filter membrane mechanism can be independently disassembled and isolated. The filter membrane can be replaced and maintained without shutting down the entire device, which completely solves the problem of the traditional vertical series device requiring shutdown for operation and maintenance. It can be adapted to the 24-hour continuous operation requirements of industrial production lines, greatly simplifying the operation and maintenance process and shortening the operation and maintenance time.

[0016] 2. This device adopts a non-powered rotating blade cleaning structure, which relies on the kinetic energy of the inlet water to drive the rotating blade to drive the scraper to simultaneously remove pollutants from the membrane surface. No external power mechanism is required, which reduces the energy consumption and structural complexity of the device. With the spring floating scraper and bottom scraper arm, it can realize the synchronous cleaning of the entire filtration surface on the periphery and bottom of the filter chamber, eliminate cleaning dead corners, effectively slow down the membrane fouling rate, and extend the service life of the filter membrane.

[0017] 3. The multi-stage filter membrane mechanism of this device can adopt a filter membrane precision setting that increases from top to bottom, forming a gradient graded filtration system. This rationally distributes the filtration load of each filter membrane, avoids rapid clogging of the front-end filter membrane due to concentrated interception of pollutants, and at the same time fully utilizes the filtration performance of each filter membrane, thereby improving the overall filtration stability and processing efficiency of the device.

[0018] 4. All pipelines in this device adopt a self-sealing quick-connect structure for easy assembly and disassembly. It can be quickly adapted to reducers and can be flexibly adjusted according to different wastewater qualities and treatment loads, making it highly adaptable to the field. With the independent differential pressure sensor set in each stage of the filter membrane mechanism, the fouling status of the single-stage filter membrane can be accurately monitored, enabling precise operation and maintenance and reducing operation and maintenance costs.

[0019] 5. The device adopts a vertical layout, which has high space utilization and small footprint. The base frame is equipped with casters at the bottom, which can be moved and fixed flexibly to adapt to different on-site installation conditions. The counterweight balances the center of gravity of the device, which improves the safety of the device during operation and movement. Targeted filter media can be added in the outlet tank to further improve the quality of the effluent and adapt to different discharge and reuse requirements. Attached Figure Description

[0020] The present invention can be further illustrated by the non-limiting embodiments given in the accompanying drawings; Fig. 1 This is a schematic diagram of an embodiment of an industrial wastewater treatment device based on membrane filtration according to the present invention. Fig. 2 This is a schematic diagram of the structure of an industrial wastewater treatment device based on membrane filtration according to another perspective of the present invention; Fig. 3 This is a schematic diagram of the filter membrane mechanism structure of an embodiment of an industrial wastewater treatment device based on membrane filtration according to the present invention; Fig. 4 This is a cross-sectional structural schematic diagram of an embodiment of an industrial wastewater treatment device based on membrane filtration according to the present invention. Fig. 5 This is a schematic diagram of the filter chamber structure of an embodiment of an industrial wastewater treatment device based on membrane filtration according to the present invention. Fig. 6 This is a schematic diagram of the page-turning cross-sectional structure of an embodiment of an industrial wastewater treatment device based on membrane filtration according to the present invention. The symbols for the main components are explained below: 1. Base frame; 2. Inlet tank; 3. High-pressure water pump; 4. Slot; 5. Filter membrane mechanism; 6. Concentrate drain pipe; 7. Outlet tank; 8. Fouma wheel; 9. Counterweight; 10. Filter media; 51. Slider; 52. Filter chamber; 53. Inlet pipe; 54. Concentrate pipe; 55. Outlet pipe; 56. Cover; 57. Buckle; 58. Filter compartment; 59. Filter hole; 510. Rotating leaf; 511. Filter membrane; 512. Connecting inlet; 513. Connecting outlet; 514. Slide groove; 515. Displacement block; 516. Spring assembly; 517. Scraper. Detailed Implementation

[0021] To enable those skilled in the art to better understand the present invention, the technical solution of the present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0022] like Figs. 1-6 As shown, an industrial wastewater treatment device based on membrane filtration according to the present invention includes a base frame 1 and an inlet chamber 2 installed on the top of the base frame 1. The inlet chamber 2 is equipped with a high-pressure water pump 3 for water inlet. The base frame 1 is longitudinally equipped with multiple slots 4, and a filter membrane mechanism 5 is installed in the slots 4. The base frame 1 is equipped with a concentrated water integrated drain pipe 6. The filter membrane mechanism 5 includes a slider 51 that is slidably installed in the slot 4. The slider 51 is U-shaped, with both sides of the slider 51 placed in the slot 4. The non-sliding end of the slider 51 is fixedly installed with a filter chamber 52. The filter chamber 52 is equipped with an inlet pipe 53, a concentrate pipe 54, and an outlet pipe 55. The inlet end of the inlet pipe 53 is connected to the outlet end of the inlet chamber 2. The outlet end of the concentrate pipe 54 is connected to the concentrate integrated drain pipe 6. The outlet pipe 55 is connected to the inlet end of the inlet pipe 53 on another filter membrane mechanism 5 located on the lower side. A cover 56 is sealed on the top of the filter chamber 52. Several latches 57 for locking are evenly installed between the cover 56 and the filter chamber 52. A filter compartment 58 is fixedly installed on the cover 56. The filter compartment 58 is located inside the filter chamber 52. Filter holes 59 are opened on the periphery and the bottom of the filter compartment 58. A hinge 510 is rotatably installed between the filter compartment 58 and the cover 56 through a bearing. Filter membranes 511 are fixedly installed on the periphery and the bottom of the filter compartment 58. The filter compartment 58 is provided with a water inlet 512 and a water outlet 513. The water inlet 512 is connected to the output end of the water inlet pipe 53. The water outlet 513 is connected to the input end of the concentrate pipe 54. The filter membrane 511 does not block the water inlet 512 and the water outlet 513. The base frame 1 is equipped with a water outlet tank 7, which is connected to the water outlet pipe 55 located at the bottom.

[0023] In this implementation case, the industrial wastewater treatment device based on membrane filtration uses a vertically arranged base frame 1 as the overall support and installation body. The base frame 1 adopts a rigid metal frame structure formed by integral welding, which has sufficient structural strength and load-bearing stability and can adapt to the installation requirements of different numbers of filter units. A sealed water inlet chamber 2 is fixedly installed at the top platform of the base frame 1. The cavity volume of the water inlet chamber 2 can be matched and set according to the rated water treatment capacity of the device. A high-pressure water pump 3 is fixedly installed at the top of the water inlet chamber 2. The outlet end of the high-pressure water pump 3 is in sealed communication with the internal cavity of the water inlet chamber 2. The inlet end of the high-pressure water pump 3 is used to supply water to the water pipeline to be treated industrial wastewater, which can pressurize the wastewater to be treated and stably send it into the internal cavity of the water inlet chamber 2. Multiple slots 4 are evenly arranged along the longitudinal height direction on the vertical surface of the base frame 1. Each slot 4 is a through-slot structure extending in the horizontal direction. The slots 4 are arranged at equal intervals, and the openings of all slots 4 face the same direction. The inner walls of the slots are smooth and flat, allowing for a stable sliding fit with the corresponding installation components. Each slot 4 is equipped with an independent filter membrane mechanism 5. Multiple filter membrane mechanisms 5 are arranged in series along the longitudinal height of the base frame 1 to form a multi-stage filtration system. On the opposite side of the base frame 1, opposite to the slot openings of the slots 4, a concentrated wastewater integrated drain pipe 6 is fixedly installed longitudinally. The concentrated wastewater integrated drain pipe 6 is a fully sealed pipe used to collect and discharge concentrated wastewater generated during the operation of the device. A sealed outlet tank 7 is fixedly installed at the bottom of the base frame 1. The top of the outlet tank 7 has an inlet port, and the bottom has a drain port. The inlet port of the outlet tank 7 is sealed to the outlet end of the filter membrane mechanism 5 located at the bottom of the base frame 1 to collect and store the compliant clean water after multi-stage filtration. Each independent filter membrane unit 5 is mounted on a slider 51 that slides within a corresponding slot 4. The slider 51 is U-shaped, with its two sides being sliding fit ends and the middle connecting section being a fixed mounting end. The two sides of the slider 51 are embedded in the internal channels of the slot 4, and the outer wall of the slider 51's side forms a uniform sliding fit with the inner wall of the slot 4, allowing it to slide smoothly along the horizontal extension direction of the slot 4 without jamming or offset. The non-sliding end of the slider 51, which is the middle connecting section of the U-shaped structure, is fixedly mounted with a filter chamber 52 by welding or bolting. The filter chamber 52 is a closed cavity structure with an open top, and the open end face of the filter chamber 52 is flat, allowing it to form a stable surface seal with the corresponding sealing component. The side wall of the filter chamber 52 is fitted with an inlet pipe 53, a concentrate pipe 54, and an outlet pipe, respectively. 55. All three pipes are sealed and connected to the internal cavity of the filter chamber 52, and the connecting ends of the pipes face the inside of the base frame 1, so as to form a precise connection with the corresponding pipes. Among them, the input end of the water inlet pipe 53 is sealed and connected to the output end of the water inlet chamber 2, and is used to send the pressurized wastewater in the water inlet chamber 2 into the corresponding filter chamber 52. The output end of the concentrate pipe 54 is sealed and connected to the corresponding branch interface of the concentrate integrated drain pipe 6, and is used to send the concentrated wastewater generated in the filter chamber 52 into the concentrate integrated drain pipe 6. The output end of the water outlet pipe 55 is sealed and connected to the input end of the water inlet pipe 53 on another set of filter membrane mechanisms 5 located below this set of filter membrane mechanisms 5, forming a vertically connected filtration flow path. The output end of the water outlet pipe 55 of the filter membrane mechanism 5 located at the bottom of the base frame 1 is sealed and connected to the inlet interface of the water outlet tank 7, and sends the finally filtered clean water into the water outlet tank 7 for storage. A cover 56 is installed at the top opening of the filter chamber 52 via a sealing gasket. The cover 56 is a rigid flat plate structure that matches the dimensions of the opening end face of the filter chamber 52. When the cover 56 is closed, it can completely seal the top opening of the filter chamber 52, forming a sealed internal cavity. Several locking clips 57 are evenly installed circumferentially between the circumferential edge of the cover 56 and the top outer wall of the filter chamber 52. The fixing end of each clip 57 is installed on the outer wall of the filter chamber 52, and the locking end is engaged with the edge of the cover 56. It can be quickly locked and unlocked by manual operation without the need for special tools. After unlocking, the cover 56 can be directly removed from the top of the filter chamber 52 for internal inspection. The components are inspected and replaced; the filter chamber 58 is fixedly installed on the side of the cover 56 facing the inside of the filter chamber 52 by bolts. The filter chamber 58 is a cylindrical structure with a closed bottom and an open top. The open top end of the filter chamber 58 is sealed and fixed to the end face of the cover 56, and the whole is completely placed in the internal cavity of the filter chamber 52. A uniform annular gap is left between the outer wall of the filter chamber 58 and the inner wall of the filter chamber 52 to form a water collection chamber; the peripheral side wall and the lower closed end face of the filter chamber 58 are evenly provided with several through filter holes 59. All filter holes 59 are evenly arranged and have the same diameter, which can form a stable water passage; the top center of the filter chamber 58 A hinge 510 is rotatably mounted between the filter chamber 58 and the cover 56 via a bearing structure. The rotation axis of the hinge 510 coincides with the central axis of the filter chamber 58. The main body of the hinge 510 is placed inside the internal cavity of the filter chamber 58 and can rotate freely around the central axis without jamming. The peripheral walls and the lower closed end face of the filter chamber 58 are fixedly covered with filter membranes 511. The filter membranes 511 completely cover all the filter holes 59 at the corresponding positions, forming a complete filter surface. The filter membranes 511 with corresponding filtration precision can be matched according to the water quality requirements of the wastewater to be treated. The top of the filter chamber 58 has an inlet 512 and an outlet 513. The inlet 512 and the outlet 513 are connected to the filter chamber 58. The outlets 513 are respectively located on both sides of the rotating blade 510. The inlet end of the inlet 512 and the outlet end of the inlet pipe 53 are connected in a sealed manner through a pipe. The outlet end of the inlet 512 faces the internal cavity of the filter chamber 58 and is directly opposite the blade position of the rotating blade 510. The inlet end of the outlet 513 is connected to the internal cavity of the filter chamber 58, and the outlet end of the outlet 513 is connected in a sealed manner to the inlet end of the concentrate pipe 54. The installation coverage of the filter membrane 511 does not obstruct the outlet end of the inlet 512 and the inlet end of the outlet 513, ensuring that the flow channels for water inlet and water outlet are unobstructed throughout, without throttling or blockage. Before starting the device, based on the water quality and treatment volume requirements of the industrial wastewater to be treated, install filter membranes 511 of corresponding filtration precision on the filter chambers 58 of each filter membrane mechanism 5. Secure the cover 56 to the filter chamber 52 using clips 57. Then, push the sliders 51 of each filter membrane mechanism 5 into the corresponding slots 4 on the base frame 1, completing the corresponding connection of the inlet pipe 53, concentrate pipe 54, and outlet pipe 55, ensuring all pipe connections are sealed and leak-free, thus completing the device installation preparation. When the device starts, the high-pressure water pump 3 is turned on, pressurizing the industrial wastewater to be treated and sending it into the internal cavity of the inlet chamber 2. The inlet chamber 2 buffers and stabilizes the pressurized wastewater, preventing pressure fluctuations from affecting subsequent flow. The filtration process causes an impact. After the flow stabilizes, the wastewater is sent through the output end of the inlet chamber 2 into the inlet pipe 53 of the uppermost filter membrane mechanism 5 of the base frame 1. After being transported by the inlet pipe 53, the wastewater enters the internal cavity of the filter chamber 58 through the inlet 512. At this time, the inside of the filter chamber 58 is under high pressure, while the product water collection chamber outside the filter chamber 58 is under low pressure. A stable transmembrane pressure difference is formed on both sides of the filter membrane 511. Driven by the transmembrane pressure difference, water molecules and small molecules that can pass through the filter membrane 511 in the wastewater pass through the filter membrane 511 and the filter pores 59 and enter the product water collection chamber between the filter chamber 58 and the filter cavity 52, completing solid-liquid separation and wastewater purification. The suspended solids trapped by the filter membrane 511... Pollutants such as floating matter, particulate matter, large organic molecules, and heavy metal flocs cannot penetrate the filter membrane 511 and remain in the internal cavity of the filter chamber 58. The wastewater carrying the trapped pollutants flows along the internal cavity of the filter chamber 58 under continuous inlet pressure, eventually being sent to the concentrate pipe 54 through the outlet 513, and then flowing into the concentrated wastewater integrated drain pipe 6, completing the centralized discharge of concentrated wastewater. The filtered clean water entering the product water collection chamber is transported downwards through the outlet pipe 55 to the inlet pipe 53 of another filter membrane unit 5 located below this group of filter membrane units 5, repeating the above filtration process to achieve step-by-step deep filtration of the wastewater. The filtered water that meets the standards is sent to the outlet tank 7 for storage through the outlet pipe 55 of the filter membrane mechanism 5 at the bottom of the base frame 1. It can be discharged or reused through the drain interface of the outlet tank 7. When the wastewater enters the filter chamber 58 through the inlet 512, the high-speed pressurized wastewater directly impacts the blades of the rotating blade 510, causing the rotating blade 510 to rotate continuously around the central bearing structure. During the rotation of the rotating blade 510, it creates a continuous circumferential disturbance to the water flow inside the filter chamber 58, causing the water flow on the surface of the filter membrane 511 to form turbulence, reducing the adhesion and accumulation of pollutants on the surface of the filter membrane 511, slowing down the fouling rate of the filter membrane 511, and ensuring the long-term stable operation of the filtration process.When the filter membrane 511 of a single filter membrane mechanism 5 becomes clogged or damaged and needs to be replaced or maintained, it is only necessary to disconnect the pipeline connection corresponding to the filter membrane mechanism 5 and pull out the slider 51 horizontally along the slot 4 to complete the overall disassembly of the filter membrane mechanism 5. There is no need to disassemble the connection structure of other filter membrane mechanisms 5 or shut down the operation of the entire device. The remaining filter membrane mechanisms 5 can continue to maintain normal filtration status and will not affect the overall wastewater treatment process of the device. The device adopts a vertical, multi-stage series layout, which significantly improves space utilization compared to conventional horizontal filtration devices. While maintaining the same water treatment capacity, it significantly reduces the overall footprint of the unit, making it suitable for industrial sites with limited installation space. Furthermore, the vertical layout aligns with gravity, allowing for gravity-assisted downward water flow, reducing unnecessary energy loss and lowering long-term operating costs. Each filter membrane unit uses an independent sliding mount structure with independent piping connections, enabling independent disassembly and maintenance of each unit without shutting down the entire system or disassembling other filtration units. The connection structure completely solves the pain point of requiring a complete system shutdown for maintenance of conventional multi-stage series filtration devices. It is fully adaptable to the 24-hour continuous operation requirements of industrial production lines, significantly shortening maintenance downtime and reducing the impact of maintenance on the production process. The filter chamber adopts a filter membrane installation structure that fully covers the circumferential walls and lower end face. Compared with the conventional single-sided filtration structure, this significantly increases the effective filtration area of ​​a single filter membrane mechanism. Under the premise of the same chamber volume, it improves the treatment efficiency and throughput of single-stage filtration. At the same time, the full coverage design of the filter membrane avoids the occurrence of filtration dead corners, ensuring full contact between wastewater and filter membrane, and improving the filtration and purification effect. The system ensures stable effluent quality. The filter chamber features a rotating flap structure driven by the inlet water flow. It requires no external motor or air source, relying solely on the inlet pressure of the wastewater for continuous rotation. This creates constant disturbance to the water flow on the filter membrane surface, reducing contaminant adhesion and accumulation, slowing down membrane fouling, and extending membrane lifespan and cleaning cycles. While achieving anti-fouling, it does not increase energy consumption, boasts a simple and reliable structure, low failure rate, and strong long-term operational stability. The system employs a multi-stage series filtration system, allowing for flexible adjustment of the number of filter membrane units and the number of filters per stage based on the wastewater quality. The membrane's filtration precision is adapted to the industrial wastewater treatment needs of different industries and different types of pollutants. At the same time, the multi-stage series filtration structure can achieve graded interception of pollutants, avoiding the problem of rapid membrane fouling caused by concentrated interception of pollutants in single-stage filtration, further improving the stability of the device's operation and long-term treatment effect. All core filtration components of the device are integrated into an independent membrane mechanism. Through the quick-opening locking structure of the cover and buckle, the filter chamber can be quickly opened to inspect and replace the internal membrane, leaf plate and other components without disassembling the overall pipeline and frame structure of the device, which greatly simplifies the device's maintenance process and reduces the difficulty of on-site operation and maintenance and labor costs.The filter membrane is installed in a position that does not obstruct the flow channels of both the inlet and concentrate, ensuring unobstructed flow of both without any issues of flow throttling or clogging. Simultaneously, the inlet is directly aligned with the rotor blades, maximizing the utilization of the inlet water's kinetic energy. This ensures stable rotor rotation under varying inlet flow rates and pressures, providing continuous flow agitation and preventing fouling. This results in a wider range of applicable conditions and enhanced operational stability.

[0024] Preferably, the end of the page turner 510 is provided with a slide groove 514, a displacement block 515 is slidably installed in the slide groove 514, a spring assembly 516 is installed between the displacement block 515 and the slide groove 514, and a scraper 517 is installed at the other end of the displacement block 515, the scraper 517 contacts the filter membrane 511.

[0025] In this embodiment, a groove 514 is provided at the radial end of the page turner 510. A displacement block 515 is slidably installed in the internal cavity of the groove 514. A spring assembly 516 is installed between the end of the displacement block 515 facing the inside of the groove 514 and the inner wall of the groove 514. A scraper 517 is fixedly installed at the end of the displacement block 515 facing the filter membrane 511. The working surface of the scraper 517 is in close contact with the surface of the filter membrane 511. When the page turner 510 rotates, it drives the displacement block 515 and the scraper 517 to rotate circumferentially in sync. The spring assembly 516 continuously applies an elastic thrust toward the filter membrane 511 to the displacement block 515. When the filter membrane 511 experiences slight wear or surface... When the surface is uneven, the displacement block 515 can slide adaptively along the extension direction of the groove 514 to adjust the contact distance between the scraper 517 and the filter membrane 511. This structure can be adapted to the installation and use of filter membranes 511 of different thicknesses. It can also automatically compensate for the contact gap when the scraper 517 is slightly worn, eliminating the need to frequently adjust the installation position of the scraper 517, reducing the frequency of maintenance operations. At the same time, it can prevent hard contact between the scraper 517 and the filter membrane 511 from scratching the filter membrane 511, ensuring the service life of the filter membrane 511. The continuous and stable contact state can ensure the long-term stability of the membrane surface cleaning effect and prevent pollutants from accumulating on the membrane surface to form a filter cake layer and causing membrane fouling.

[0026] The preferred base frame 1 is equipped with a fuma wheel 8 at its bottom.

[0027] In this implementation case, casters 8 are installed at the bottom of the base frame 1. The casters 8 are evenly distributed around the bottom circumference of the base frame 1, and each caster 8 is equipped with an independent locking structure and height adjustment structure. When the device needs to be moved or its installation position adjusted, the entire device can be moved through the rolling structure of the casters 8. The on-site transfer and position adjustment of the device can be completed without the need for large hoisting equipment. After the device is moved to the target position, the locking structure of the casters 8 can be used to lock the casters to prevent displacement during the operation of the device. At the same time, the support height of a single set of casters 8 can be adjusted through the height adjustment structure to adapt to uneven installation ground and ensure that the device is in a horizontal and stable installation state. This structure greatly improves the on-site adaptability of the device, can flexibly adapt to different installation sites, simplifies the installation and maintenance process of the device, and reduces the difficulty and cost of on-site installation.

[0028] A counterweight 9 is installed on the opposite side of the preferred base frame 1, opposite to the water outlet tank 7.

[0029] In this implementation, a counterweight 9 is installed on the side of the base frame 1 opposite to the outlet tank 7. The counterweight 9 is fixed to the side wall of the base frame 1 by a bolt locking structure. The weight of the counterweight 9 can be adjusted and replaced according to the overall weight distribution of the device. During the operation of the device, the outlet tank 7 will continuously store filtered clean water, and the multiple sets of filter membrane mechanisms 5 will also form a concentrated weight on one side of the base frame 1. The counterweight 9 can balance the weight distribution on both sides of the base frame 1, offset the center of gravity shift caused by the concentrated weight on one side, and prevent the device from tipping over due to the center of gravity shift during operation or movement. This structure can greatly improve the safety of the device during operation and movement without changing the overall layout and structural design of the device. The counterweight 9 can be flexibly replaced and adjusted to adapt to the weight changes after the installation of different numbers of filter membrane mechanisms 5, ensuring that the device can maintain a stable center of gravity under different configurations.

[0030] Ideally, all pipe connections should use a self-sealing quick-connect structure and be compatible with reducing fittings.

[0031] In this implementation case, all pipe connections of the device adopt a self-sealing quick-connect structure. The self-sealing quick-connect structure can be matched and installed with reducers of different specifications. The connection between the inlet pipe 53 and the inlet chamber 2, the connection between the concentrate pipe 54 and the concentrate integrated drain pipe 6, and the connection between the outlet pipe 55 and the next-stage inlet pipe 53 are all completed through the self-sealing quick-connect structure. The connection and disassembly of the pipes can be completed without the need for special tools, which greatly simplifies the process of pipe assembly and disassembly. The matching reducers can flexibly adjust the pipe diameter according to the changes in the treated water volume and water quality without replacing the entire pipe structure. This structure improves the on-site adaptability of the device, can quickly adapt to the adjustment needs under different working conditions, and at the same time reduces the time and labor costs required for pipe assembly and disassembly, providing a structural basis for the rapid assembly and disassembly of the single filter membrane unit 5.

[0032] The preferred outlet tank 7 contains filter media 10 specifically designed for the current wastewater.

[0033] In this implementation case, the internal cavity of the effluent tank 7 contains filter media 10 tailored to the current wastewater quality. The filter media 10 can be flexibly replaced according to the type of pollutants in the wastewater and the treatment requirements. Different types of filter media, such as activated carbon filter media, ion exchange resin, and modified adsorption filter media, can be selected. After the clean water filtered by the multi-stage filtration membrane mechanism 5 is sent into the effluent tank 7, it will come into full contact with the filter media 10 inside the effluent tank 7. The filter media 10 can perform deep adsorption treatment on the trace pollutants, color, odor, heavy metal ions, and other substances remaining in the clean water, further improving the water quality standard of the effluent. This structure can achieve deep purification of the effluent without the need for additional independent deep treatment equipment. It can flexibly adapt to different discharge or reuse standards, expanding the applicable scenarios of the device. At the same time, the type of filter media 10 can be flexibly replaced according to changes in the influent water quality to ensure the stability of the deep treatment effect.

[0034] The top of the preferred rotating page 510 is directly opposite the inlet 512 and is equipped with several impact drive blades with an angle of attack. The bottom of the rotating page 510 extends axially with a bottom scraper arm. The end of the bottom scraper arm is fixed with a bottom scraper blade that fits against the filter membrane 511 on the lower side of the filter chamber 58. The bottom scraper blade rotates synchronously with the scraper blades 517 on the periphery.

[0035] In this embodiment, the top of the rotating page 510 is directly opposite the inlet 512, and several impact drive blades with an angle of attack are fixedly installed there. A bottom scraper arm extends axially from the bottom of the rotating page 510, and a bottom scraper blade is fixedly installed at the end of the bottom scraper arm. The working surface of the bottom scraper blade is in close contact with the surface of the filter membrane 511 on the lower side of the filter chamber 58. The bottom scraper blade and the peripheral scraper blades 517 rotate synchronously with the rotating page 510. When wastewater enters the filter chamber 58 from the inlet 512, it directly impacts the impact drive blades at the top of the rotating page 510. The blades with an angle of attack maximize the utilization of the impact kinetic energy of the water flow, driving the rotating page 510... 10. Stable rotation: Even under low influent flow conditions, the rotating blade 510 maintains sufficient rotational speed. When the rotating blade 510 rotates, the peripheral scraper 517 and the bottom scraper rotate synchronously, scraping and cleaning the filter membrane 511 surface on the periphery and bottom of the filter chamber 58 respectively. This structure improves the utilization rate of influent kinetic energy, ensures the stable operation of the cleaning structure under different influent conditions, and fills the cleaning dead corners on the bottom filter surface of the filter chamber 58, realizing synchronous cleaning of the entire filter surface of the filter membrane 511, further slowing down the rate of membrane fouling, and extending the service life and cleaning cycle of the filter membrane 511.

[0036] The preferred self-sealing quick-connect structure includes a quick-connect male and a quick-connect female that are compatible with each other. The quick-connect male has a built-in spring self-sealing valve core, and the quick-connect female is fitted with a pneumatic locking ring on the outside. Each of the water inlet pipe 53, the concentrate pipe 54, and the water outlet pipe 55 is connected in series with an independent pneumatic shut-off valve. All pneumatic shut-off valves and pneumatic locking rings are electrically connected to the automatic control unit.

[0037] In this implementation, the self-sealing quick-connect structure includes mutually compatible male and female quick-connect fittings. The male quick-connect fitting has a built-in spring-loaded self-sealing valve core, and the female quick-connect fitting is fitted with a pneumatic locking ring. Independent pneumatic shut-off valves are connected in series on the inlet pipe 53, concentrate pipe 54, and outlet pipe 55. All pneumatic shut-off valves and pneumatic locking rings are electrically connected to an external automatic control unit. After the male and female quick-connect fittings are properly aligned, the pneumatic locking ring can be locked and fixed under the control of the automatic control unit, ensuring the sealing stability of the connection point. The spring-loaded self-sealing valve core can... When the male and female connectors are separated, the flow channel is automatically sealed to prevent liquid leakage in the pipeline. The series-connected independent pneumatic shut-off valves can independently open and close the corresponding pipelines under the control of the automatic control unit, without shutting down the entire device, and can cut off all pipelines of a single filter membrane mechanism 5 individually. This structure provides complete structural support for the online replacement of a single filter membrane mechanism 5 without shutting down the machine. It can realize the automatic isolation, unlocking and locking of a single filter membrane mechanism 5, which greatly reduces the difficulty of device operation and maintenance, and ensures that the device can continue to operate during maintenance, adapting to the use needs of continuous production in industrial sites.

[0038] Preferably, multiple filter membrane mechanisms 5 are arranged sequentially from top to bottom along the longitudinal direction of the base frame 1, and the filtration accuracy of the internal filter membranes 511 is set in a gradient that increases step by step; the filter membrane 511 of the uppermost filter membrane mechanism 5 has the largest pore size, and the filter membrane 511 of the lowermost filter membrane mechanism 5 has the smallest pore size.

[0039] In this implementation case, multiple sets of filter membrane mechanisms 5 are arranged longitudinally from top to bottom along the base frame 1. The filter membranes 511 installed inside are set with progressively increasing filtration precision. The filter membrane 511 in the uppermost filter membrane mechanism 5 has the largest pore size, and the filter membrane 511 in the lowermost filter membrane mechanism 5 has the smallest pore size. Wastewater enters from the uppermost filter membrane mechanism 5 and is filtered through the filter membranes 511 with progressively increasing precision. Large suspended solids and impurities are first intercepted by the large-pore filter membranes 511, while fine pollutants and large molecules are then intercepted by the subsequent small-pore filter membranes 511. This structure forms a complete hierarchical filtration system, which can reasonably distribute the filtration load of each filter membrane 511, avoid the rapid clogging of the front filter membranes 511 due to the concentrated interception of a large number of pollutants, and at the same time, can give full play to the filtration performance of each filter membrane 511, improve the overall filtration efficiency and effluent stability of the device, extend the filter membrane replacement cycle of the entire device, and reduce the consumable costs of long-term operation.

[0040] Each of the preferred base frames 1 is equipped with a differential pressure sensor corresponding to the position of each filter membrane unit 5. The high-pressure detection end of the differential pressure sensor is connected to the water inlet pipe 53 of the corresponding filter membrane unit 5, and the low-pressure detection end is connected to the water outlet pipe 55 of the corresponding filter membrane unit 5. All differential pressure sensors are electrically connected to an external automatic control unit.

[0041] In this implementation case, each frame 1 is equipped with an independent differential pressure sensor corresponding to the installation position of each filter membrane unit 5. The high-pressure detection end of the differential pressure sensor is connected to the inlet pipe 53 of the corresponding filter membrane unit 5, and the low-pressure detection end of the differential pressure sensor is connected to the outlet pipe 55 of the corresponding filter membrane unit 5. All differential pressure sensors are electrically connected to an external automatic control unit. During the operation of the device, the differential pressure sensor can collect the pressure difference between the inlet pipe 53 and the outlet pipe 55 of the corresponding filter membrane unit 5 in real time, and transmit the collected differential pressure data to the automatic control unit in real time. The automatic control unit can determine the fouling status of the filter membrane 511 inside the corresponding filter membrane unit 5 according to the preset differential pressure threshold. This structure can accurately monitor the operating status of each filter membrane unit 5, provide quantitative data support for the replacement and maintenance of the filter membrane 511, realize precise operation and maintenance of the device, avoid ineffective shutdowns or filter membrane failures caused by experience-based judgments, and ensure the long-term stability of the effluent water quality during the operation of the device.

[0042] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in the present invention should still be covered by the claims of the present invention.

Claims

1. An industrial wastewater treatment device based on membrane filtration, comprising a base frame (1) and an inlet chamber (2) installed on top of the base frame (1), wherein the inlet chamber (2) is equipped with a high-pressure water pump (3) for water inlet, characterized in that: The base frame (1) is longitudinally and uniformly installed with multiple slots (4), a filter membrane mechanism (5) is installed in the slots (4), and a concentrated water integrated drain pipe (6) is installed on the base frame (1). The filter membrane mechanism (5) includes a slider (51) slidably installed in the slot (4). The slider (51) is U-shaped, with both sides of the slider (51) placed in the slot (4). A filter chamber (52) is fixedly installed on the non-sliding end of the slider (51). The filter chamber (52) is equipped with an inlet pipe (53), a concentrate pipe (54), and an outlet pipe (55). The inlet pipe (53) is connected to the output end of the inlet chamber (2). The output end of the concentrate pipe (54) is connected to the concentrate integrated drain pipe (6). The outlet pipe (55) is connected to the input end of the inlet pipe (53) on another filter membrane mechanism (5) located on the lower side. The filter chamber (52) is sealed at the top with a cover (56). Several locking buckles (57) are evenly installed between the cover (56) and the filter chamber (52). A filter compartment (58) is fixedly installed on the cover (56). The filter compartment (58) is located inside the filter chamber (52). Filter holes (59) are provided on the periphery and lower side of the filter compartment (58). A hinge (510) is rotatably installed between the filter compartment (58) and the cover (56) via a bearing. The filter chamber (58) is fixedly installed with filter membranes (511) on its periphery and lower side. The filter chamber (58) is provided with a water inlet (512) and a water outlet (513). The water inlet (512) is connected to the output end of the water inlet pipe (53), and the water outlet (513) is connected to the input end of the concentrate pipe (54). The filter membrane (511) does not block the water inlet (512) and the water outlet (513). The base frame (1) is equipped with a water outlet tank (7), which is connected to the water outlet pipe (55) located at the bottom.

2. The industrial wastewater treatment device based on membrane filtration according to claim 1, characterized in that: The end of the page turner (510) is provided with a groove (514), a displacement block (515) is slidably installed in the groove (514), a spring assembly (516) is installed between the displacement block (515) and the groove (514), and a scraper (517) is installed at the other end of the displacement block (515), the scraper (517) contacts the filter membrane (511).

3. The industrial wastewater treatment device based on membrane filtration according to claim 1, characterized in that: The base frame (1) is equipped with a fuma wheel (8) at its bottom.

4. The industrial wastewater treatment device based on membrane filtration according to claim 1, characterized in that: A counterweight (9) is installed on the other side of the base frame (1) opposite to the water outlet tank (7) on which it is installed.

5. The industrial wastewater treatment device based on membrane filtration according to claim 1, characterized in that: All pipe connections are made using a self-sealing quick-connect structure and can be fitted with reducers.

6. The industrial wastewater treatment device based on membrane filtration according to claim 1, characterized in that: The outlet tank (7) contains filter media (10) for the current wastewater.

7. The industrial wastewater treatment device based on membrane filtration according to claim 1, characterized in that: The top of the rotating page (510) is directly opposite the inlet (512) and is provided with several impact drive blades with an angle of attack. The bottom of the rotating page (510) extends axially with a bottom scraper arm. The end of the bottom scraper arm is fixed with a bottom scraper blade that fits against the filter membrane (511) on the lower side of the filter chamber (58). The bottom scraper blade rotates synchronously with the scraper blades (517) on the periphery.

8. An industrial wastewater treatment device based on membrane filtration according to claim 5, characterized in that: The self-sealing quick-connect structure includes a quick-connect male and a quick-connect female that are compatible with each other. The quick-connect male has a built-in spring self-sealing valve core, and the quick-connect female is fitted with a pneumatic locking ring on the outside. Each of the water inlet pipe (53), the concentrate pipe (54), and the water outlet pipe (55) is connected in series with an independent pneumatic shut-off valve. All pneumatic shut-off valves and pneumatic locking rings are electrically connected to the automatic control unit.

9. An industrial wastewater treatment device based on membrane filtration according to claim 1, characterized in that: Multiple filter membrane mechanisms (5) are arranged longitudinally from top to bottom along the base frame (1), and the filtration accuracy of the internal filter membranes (511) is set in a gradient that increases step by step; the filter membrane (511) of the uppermost filter membrane mechanism (5) has the largest pore size, and the filter membrane (511) of the lowermost filter membrane mechanism (5) has the smallest pore size.

10. An industrial wastewater treatment device based on membrane filtration according to claim 1, characterized in that: The base frame (1) is equipped with a differential pressure sensor corresponding to the position of each filter membrane mechanism (5); the high pressure detection end of the differential pressure sensor is connected to the water inlet pipe (53) of the corresponding filter membrane mechanism (5), and the low pressure detection end is connected to the water outlet pipe (55) of the corresponding filter membrane mechanism (5). All differential pressure sensors are electrically connected to an external automatic control unit.

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