A membrane pool device

Abstract

This application provides a membrane tank device, including a housing, a support frame, a membrane fiber assembly, a water collection pipe, and a product water pipe. The housing includes two opposing first side walls; the support frame is connected between the two first side walls; the membrane fiber assembly includes membrane fibers and membrane frames connected to both ends of the membrane fibers, the membrane frames having a hollow structure, one end of the membrane frame being detachably connected to the support frame; the water collection pipe is connected to the support frame, and the water collection pipe communicates with the other end of the membrane frame; the product water pipe is connected to the inner side wall of the housing, one end of the product water pipe communicating with the water collection pipe, and the other end of the product water pipe being an outlet near the top of the housing; both the water collection pipe and the product water pipe are made of plastic. This application solves the problems of existing membrane frames being easily corroded and the stainless steel product water pipe integrated on the membrane frame being prone to leakage.

Description

Technical Field

[0001] This application relates to the field of wastewater treatment technology, and in particular to a membrane tank device. Background Technology

[0002] Wastewater treatment is the process of purifying wastewater to meet the water quality requirements for discharge into a water body or for reuse. Wastewater treatment is frequently used in various fields. Membrane wastewater treatment systems are a common type of wastewater treatment equipment, and membrane purification tanks are an essential component of membrane wastewater treatment systems.

[0003] Most existing membrane purification tanks use concrete or carbon steel anti-corrosion membrane tanks, and then place a stainless steel membrane frame with integrated permeate pipes inside the membrane tank. When the chloride ion content in the wastewater is high, the stainless steel membrane frame is prone to corrosion at the weld seams due to its many weld points. This can lead to permeate leakage in the permeate pipes formed by the stainless steel membrane frame. Utility Model Content

[0004] This application provides a membrane tank device that solves the problems of existing membrane frames being easily corroded and stainless steel permeate pipes integrated on the membrane frame being prone to leakage.

[0005] This application is implemented as follows: a membrane tank device includes a housing, a support frame, a membrane fiber assembly, a water collection pipe, and a water production pipe. The housing includes two first side walls arranged opposite to each other; the support frame is connected between the two first side walls; the membrane fiber assembly includes membrane fibers and membrane frames connected to both ends of the membrane fibers, the membrane frames having a hollow structure, one end of the membrane frame being detachably connected to the support frame; the water collection pipe is connected to the support frame, and the water collection pipe communicates with the other end of the membrane frame; the water production pipe is connected to the inner side wall of the housing, one end of the water production pipe communicating with the water collection pipe, and the other end of the water production pipe being an outlet near the top of the housing; both the water collection pipe and the water production pipe are made of plastic.

[0006] In some embodiments, both the housing and the support frame are made of carbon steel;

[0007] The inner wall of the box and the outer surface of the support frame are both provided with an anti-corrosion layer.

[0008] In some embodiments, a reinforcing plate is connected to the end of the support frame, and the reinforcing plate is welded to the inner side wall of the box.

[0009] The surface of the reinforcing plate is provided with an anti-corrosion layer.

[0010] In some embodiments, the membrane tank device further includes an aeration pipe connected to the inner side wall of the tank, the aeration pipe including a main aeration pipe and a plurality of aeration branch pipes communicating with the main aeration pipe;

[0011] The main aeration pipe extends along the depth direction of the box, and the aeration branch pipe is located on the side of the membrane filament near the bottom surface of the box;

[0012] The main aeration pipe has an air inlet near the top of the housing, and the aeration branch pipe has an aeration port for spraying air into the membrane filaments to make the membrane filaments vibrate.

[0013] The aeration pipe is made of plastic.

[0014] In some embodiments, the membrane tank device further includes a connecting assembly, which includes a connecting plate, a support rod, and a pipe fixing ring. The connecting plate is welded to the inner sidewall of the housing; the support rod is connected to the connecting plate, and the pipe fixing ring is connected to the support rod.

[0015] The water production pipe passes through the pipe fixing ring to connect to the inner wall of the box;

[0016] The aeration pipe passes through the pipe fixing ring to be connected to the inner wall of the box;

[0017] The surface of the connecting plate is provided with an anti-corrosion layer.

[0018] In some embodiments, the number of support frames is multiple, and the multiple support frames are divided into two groups. The two groups of support frames are spaced apart along a first direction, and the first direction, the depth direction of the box, and the extension direction of the support frame are perpendicular to each other.

[0019] The membrane fiber assembly can be detachably connected to each set of support frames.

[0020] In some embodiments, the bottom of the box is provided with a mud hopper communicating with the box, the mud hopper being used to collect impurities that settle naturally and fall off the membrane fibers;

[0021] The bottom wall of the mud hopper has a through-hole for sewage discharge, and the sewage discharge is equipped with a switch valve.

[0022] In some embodiments, a support leg is connected to the outer side of the bottom of the box, and the height of the support leg is greater than the depth of the mud bucket in the depth direction of the box.

[0023] A pad is connected to the side surface of the support leg away from the box body, and the orthographic projection of the support leg on the box body is located within the orthographic projection of the pad on the box body.

[0024] In some embodiments, the outer side of the box is provided with a first reinforcing rib that surrounds the box circumferentially.

[0025] The outer side of the box is also provided with a second reinforcing rib that intersects with the first reinforcing rib.

[0026] In some embodiments, the first reinforcing rib is connected to a lifting lug, which is used for a crane to lift the box body for movement.

[0027] The beneficial effects of the membrane tank device provided in this application are as follows: Compared with the prior art, this application combines the support frame with the box body, and the materials of the water collection pipe and the water production pipe are both plastic, which optimizes the support structure of the membrane fiber assembly, greatly reduces the number of welding points, and thus reduces the risk of corrosion of the membrane tank device. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the overall structure of the membrane tank device provided in the embodiments of this application;

[0029] Figure 2 This is a schematic diagram of the internal structure of the membrane tank device provided in the embodiments of this application;

[0030] Figure 3 This is a schematic diagram of the installation of the membrane fiber assembly provided in the embodiments of this application;

[0031] Figure 4 This is a schematic diagram of the structure of the support frame connecting the membrane frame provided in the embodiment of this application;

[0032] Figure 5 This is a schematic diagram showing the installation location of the aeration pipe provided in the embodiments of this application;

[0033] Figure 6 yes Figure 1 The front view.

[0034] Reference numerals: 1. Box body; 101. First side wall; 11. Support leg; 12. Pad; 13. First reinforcing rib; 14. Second reinforcing rib; 15. Lifting lug;

[0035] 2. Support frame; 21. Reinforcing plate;

[0036] 3. Membrane fiber assembly; 31. Membrane fiber; 32. Membrane frame; 33. Bending plate;

[0037] 41. Water collection pipe; 42. Water production pipe; 420. Water outlet;

[0038] 5. Aeration pipe; 51. Main aeration pipe; 510. Air inlet; 52. Aeration branch pipe;

[0039] 6. Connecting components; 61. Connecting plate; 62. Support rod; 63. Pipe retaining ring;

[0040] 7. Mud hopper; 71. Sewage outlet; 72. Switch valve. Detailed Implementation

[0041] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0042] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0043] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0044] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0045] It should also be noted that in the embodiments of this application, the same reference numerals are used to represent the same component or part. For the same part in the embodiments of this application, the reference numerals may only be used to mark one part or component as an example. It should be understood that the reference numerals are also applicable to other identical parts or components.

[0046] In related technologies, the membrane frame installed in the membrane purification tank is made of stainless steel. When the content of chloride ions or hexavalent chromium ions in the water is high, the weld seams of the membrane frame are easily corroded, leading to perforation of the membrane frame. Moreover, the existing membrane frames integrate the permeate pipe, specifically by using the permeate pipe made of stainless steel as the support leg or crossbar of the membrane frame. This makes the weld seams of the permeate pipe also easily corroded, leading to leakage of the permeate pipe.

[0047] Based on this, the present application provides a membrane tank device that solves the problems of existing membrane frames being easily corroded and stainless steel permeate pipes integrated on the membrane frame being prone to leakage.

[0048] refer to Figure 1 and Figure 2 The membrane tank device provided in this application embodiment includes a housing 1, a support frame 2, a membrane fiber assembly 3, a water collection pipe 41, and a water production pipe 42. The housing 1 includes two first side walls 101 arranged opposite to each other; the support frame 2 is connected between the two first side walls 101; the membrane fiber assembly 3 includes membrane fibers 31 and membrane frames 32 connected to both ends of the membrane fibers 31. The membrane frames 32 have a hollow structure, and one end of the membrane frames 32 is detachably connected to the support frame 2; the water collection pipe 41 is connected to the support frame 2, and the other end of the water collection pipe 41 is connected to the other end of the membrane frame 32; the water production pipe 42 is connected to the inner side wall of the housing 1, one end of the water production pipe 42 is connected to the water collection pipe 41, and the other end of the water production pipe 42 is an outlet 420, which is close to the top of the housing 1; both the water collection pipe 41 and the water production pipe 42 are made of plastic.

[0049] It should be noted that the membrane frame in this application is not a traditional stainless steel membrane frame, but rather a membrane frame formed by combining a support frame 2, a water collection pipe 41, and a water production pipe 42, wherein both the water collection pipe 41 and the water production pipe 42 are made of plastic. Compared with the membrane frames of the prior art, the membrane pool device of this application greatly reduces the number of weld points, thereby reducing the risk of corrosion.

[0050] Furthermore, this application connects the support frame 2 and the product water pipe 42 to the inner wall of the housing 1, and connects the membrane fiber assembly 3 and the water collection pipe 41 to the support frame 2. In this way, the membrane tank device can be integrated as a whole, which is equivalent to connecting the membrane frame and the membrane tank together to form an integrated structure. When the membrane fiber assembly 3 needs to be repaired or replaced, it is only necessary to disassemble the membrane fiber assembly 3. It is not necessary to remove the support frame 2, the water collection pipe 41 and the product water pipe 42 from the housing 1. This greatly reduces the difficulty of repairing and replacing the membrane fiber 31, and also reduces the repair and replacement cost of the membrane fiber 31.

[0051] Since the housing 1, support frame 2, product water pipe 42 and collection water pipe 41 are connected together to form a whole, the membrane tank device of this application can be used as an independent purification unit when purifying sewage, which is convenient to transport and not limited to the application site, making sewage purification more convenient.

[0052] It is understood that the top of the tank 1 in this application has an open structure, which facilitates the entry of personnel into the tank 1 to install the support frame 2, the water production pipe 42, the water collection pipe 41, and the membrane fiber assembly 3. When the membrane tank device of this application is used, sewage can be transported into the tank 1 through the top opening of the tank 1 to speed up the sewage transport speed. The water production pipe 42 of this application is used to discharge the purified water. Therefore, the outlet 420 of the water production pipe 42 is set at the end of the water production pipe 42 near the top of the tank 1. This can effectively prevent the purified water flowing out of the outlet 420 of the water production pipe 42 from being contaminated. Furthermore, the water production pipe 42 can extend outside the tank 1, so the outlet 420 is located outside the tank 1, which is conducive to the collection of purified water flowing out of the outlet 420 by personnel.

[0053] refer to Figure 3 In this embodiment, the water collection pipe 41 is connected to the support frame 2, the product water pipe 42 is connected to the water collection pipe 41, and one end of the membrane frame 32 is also connected to the water collection pipe 41. The membrane frame 32 can be fixed and purified water can be collected through the water collection pipe 41. The other end of the membrane frame 32 is connected to the support frame 2. Specifically, a bending plate 33 is bolted to the support frame 2, and the other side of the membrane frame 32 is connected through a pre-drilled hole in the bending plate 33. Furthermore, the water collection pipe 41 is connected to the support frame 2 by pre-setting holes in the water collection pipe 41 during manufacturing. Corresponding through holes are made in the support frame 2 to which the water collection pipe 41 is to be connected. By passing bolts through the holes in the water collection pipe 41 and the corresponding through holes in the support frame 2, the water collection pipe 41 can be fixedly connected to the support frame 2, making the installation of the water collection pipe 41 more stable, thereby ensuring that the installation of the membrane frame 32 is also more stable and will not easily detach from its original installation position.

[0054] In some embodiments, both the housing 1 and the support frame 2 are made of carbon steel; the inner sidewall of the housing 1 and the outer surface of the support frame 2 are provided with an anti-corrosion layer.

[0055] Among them, the anti-corrosion layer (also known as the anti-corrosion coating or protective layer) is a widely used concept, and its materials and forms are diverse, depending on the substrate being protected (such as metal, concrete, etc.) and the usage environment (such as atmosphere, seawater, soil, chemical media).

[0056] The main types and common materials of anti-corrosion coatings include the following: 1. Organic coatings; 2. Metal coatings (metal plating); 3. Inorganic non-metallic coatings; 4. Chemical conversion films; 5. Temporary anti-corrosion coatings.

[0057] Factors to consider when choosing an anti-corrosion coating include environment (indoor, outdoor, marine, underground, or chemical environment), substrate (steel, aluminum, concrete, or other materials), service life (how long protection is needed), construction conditions (whether sandblasting, heating, or other treatments are possible), cost, and appearance.

[0058] Depending on the intended use of the membrane tank device described in this application, either an organic coating or an inorganic non-metallic coating can be selected as the anti-corrosion layer. Among these, organic coatings are the most common and widely used anti-corrosion method, forming a dense insulating layer that prevents water, oxygen, and corrosive media from contacting the substrate. For example, epoxy resin coatings have strong adhesion and excellent chemical resistance, and are widely used in ships, port facilities, tank interiors, steel structure bridges, etc.; polyurethane coatings have good wear resistance and weather resistance, and are often used as topcoats to provide aesthetics and final protection; zinc-rich primers are divided into epoxy zinc-rich and inorganic silicate zinc-rich primers, with zinc powder acting as a sacrificial anode to provide cathodic protection for the steel substrate, making them a classic primer for heavy-duty anti-corrosion systems; acrylic coatings have good weather resistance and are often used in outdoor fields such as automobiles and construction; fluorocarbon coatings have excellent weather resistance, chemical resistance, and self-cleaning properties, and are used in landmark buildings and high-temperature and high-humidity environments; asphalt coatings / coal tar enamels are water-resistant and soil corrosion-resistant, and are traditionally used for the anti-corrosion of underground pipelines (such as water and gas pipelines); polyethylene (PE), polypropylene (PP), epoxy powder, etc., are used to form thick coatings through spraying, rotational molding, or coating processes, and are often used for the anti-corrosion of pipes, steel bars, containers, and furniture; chloroprene rubber, butyl rubber, and other rubber coatings have good elasticity and chemical resistance, and are used for the lining of chemical equipment, ship components, etc. Inorganic non-metallic coatings include ceramic coatings: which have extremely high hardness, wear resistance and high temperature corrosion resistance, and are often used in extreme environments such as aerospace and turbine engine blades; enamel coatings: which are made by fusing glassy materials onto the metal surface, are acid-resistant, high temperature resistant and insulating, and are often used in chemical reaction vessels and household kitchenware (bathtubs, sinks); and cement mortar coatings: which are often used to protect the inner walls of large cast iron pipes and steel pipes buried underground or underwater.

[0059] In the actual fabrication of membrane tank devices, staff can select appropriate materials as anti-corrosion layers based on the actual situation to meet anti-corrosion requirements.

[0060] It should be noted that the tank 1 is used to hold sewage, and the weight of the support frame 2, the product water pipe 42, the collection water pipe 41, and the membrane fiber assembly 3 are all supported by the inner wall of the tank 1. Therefore, the tank 1 needs to have a certain degree of rigidity and hardness to meet the requirements. Thus, this application uses carbon steel to make the tank 1, which gives the tank 1 a certain degree of rigidity to meet the requirements of sewage holding. Moreover, carbon steel has a certain degree of corrosion resistance, which can effectively prevent the tank 1 from being corroded. Since the support frame 2 is connected to the inner wall of the tank 1, and the membrane fiber assembly 3 and the collection water pipe 41 need to be connected to the support frame 2, this application also uses carbon steel to make the support frame 2. In this way, the support frame 2 and the tank 1 are made of the same material, which makes it easier to connect them firmly by welding, and the welded areas have a corrosion-resistant effect.

[0061] When both the tank body 1 and the support frame 2 are made of carbon steel, the connection between the support frame 2 and the inner wall of the tank body 1 can be made by welding. Furthermore, each weld point between the support frame 2 and the inner wall of the tank body 1 has an anti-corrosion effect. Although the weld points between the support frame 2 and the inner wall of the tank body 1 have an anti-corrosion effect, to avoid direct contact between the weld points and sewage and increase the risk of corrosion, this embodiment of the application provides an anti-corrosion layer on both the inner wall of the tank body 1 and the outer surface of the support frame 2. This prevents the tank body 1 and the support frame 2 from directly contacting sewage, effectively preventing corrosive substances in the sewage from corroding the weld points between the tank body 1 and the support frame 2. This ensures that the connection between the support frame 2 and the inner wall of the tank body 1 remains firm, preventing loosening or breakage, and does not affect the normal installation of the membrane fiber assembly 3, thus ensuring that the service life of the membrane tank device is not affected.

[0062] One method for applying an anti-corrosion layer to the inner wall of the housing 1 and the outer surface of the support frame 2 is to first weld the support frame 2 to the inner wall of the housing 1. Since both are made of carbon steel, welding them together is easier and more secure. Then, an anti-corrosion layer is applied to both the inner wall of the housing 1 and the outer surface of the support frame 2. Alternatively, the anti-corrosion layer can be applied during the manufacturing of the housing 1 and the support frame 2, and then the support frame 2 is welded to the inner wall of the housing 1. This method allows for pre-application of the anti-corrosion layer, improving the efficiency of the support frame 2 installation.

[0063] In some embodiments, reference Figure 2 The end of the support frame 2 is connected to the reinforcing plate 21, which is welded to the inner wall of the box 1; the surface of the reinforcing plate 21 is provided with an anti-corrosion layer.

[0064] It should be noted that the support frame 2 in this embodiment is a long strip of channel steel. Since the end area of ​​the channel steel is small, directly welding the support frame 2 to the inner wall of the box 1 is not only not secure, but may also cause the box 1 to crack. In order to make the connection between the support frame 2 and the inner wall of the box 1 more secure, a reinforcing plate 21 can be connected to the end of the support frame 2. The reinforcing plate 21 can be made of the same material as the support frame 2, such as carbon steel. The reinforcing plate 21 is welded to the end of the support frame 2, which is equivalent to increasing the end area of ​​the support frame 2. This makes the support frame 2 more securely welded to the inner wall of the box 1, and can also effectively prevent the box 1 from being cracked, avoiding the risk of leakage of the box 1.

[0065] Since the reinforcing plate 21 is welded to the end of the support frame 2, in order to prevent corrosion at the weld, an anti-corrosion layer can also be set on the surface of the reinforcing plate 21, thereby effectively preventing the weld between the reinforcing plate 21 and the support frame 2 from breaking, and ensuring that the connection between the support frame 2 and the inner wall of the box 1 is more reliable.

[0066] In this embodiment, the material of the anti-corrosion layer on the surface of the reinforcing plate 21 can be the same as the material of the anti-corrosion layer on the inner side wall of the box 1 and the outer surface of the support frame 2. This way, the staff does not need to frequently change different materials for coating work, which not only makes it easier for the staff to apply the anti-corrosion layer, but also saves the material cost of the anti-corrosion layer.

[0067] In some embodiments, reference Figure 4 and Figure 5 The membrane tank device also includes an aeration pipe 5, which is connected to the inner wall of the tank 1. The aeration pipe 5 includes an aeration main pipe 51 and multiple aeration branch pipes 52 connected to the aeration main pipe 51. The aeration main pipe 51 extends along the depth direction Z of the tank 1, and the aeration branch pipes 52 are located on the side of the membrane fiber 31 near the bottom surface of the tank 1. The aeration main pipe 51 has an air inlet 510 near the top of the tank 1, and the aeration branch pipes 52 have aeration ports for spraying air into the membrane fiber 31 to make the membrane fiber 31 vibrate. The aeration pipe 5 is made of plastic.

[0068] Among them, the aeration pipe 5 plays a crucial role in the wastewater purification process of the membrane tank device. Its core function is to provide oxygen (necessary for biochemical reactions) to the microorganisms. Organic matter (pollutants) in the wastewater needs to be decomposed and digested by aerobic microorganisms in the membrane tank. These microorganisms require oxygen for metabolism and reproduction, so providing oxygen through the aeration pipe 5 maintains the aerobic environment in the membrane tank. The aeration pipe 5 continuously introduces air (or pure oxygen) from the bottom, providing sufficient dissolved oxygen (DO) to the microorganisms, ensuring efficient biochemical reactions, and effectively removing BOD (biochemical oxygen demand), COD (chemical oxygen demand), and ammonia nitrogen (through nitrification) from the wastewater.

[0069] In addition, another function of the aeration pipe 5 is to scrub the membrane fibers 31 to prevent membrane fouling. Membrane fouling specifically refers to the fact that the core of the MBR process is the hollow fiber membrane (or flat sheet membrane), which has very small pores used to trap sludge and impurities and produce clean water. However, during operation, sludge particles, colloids, and microbial metabolites in the sludge mixture can adhere to the surface of the membrane fibers 31, clogging the membrane pores and leading to increased permeate resistance and decreased flow rate – this is "membrane fouling." The bubbles generated by the aeration pipe 5, during their ascent, will generate intense agitation and scrubbing action on the membrane fibers (module). This continuous gas-liquid two-phase flow effectively washes away the pollutants that have just adhered to the membrane surface, allowing them to flow away with the mixed liquor, greatly slowing down the rate of membrane fouling, maintaining membrane flux, and enabling the membrane fiber module 3 to maintain a stable permeate flow rate for a longer period, thus extending the chemical cleaning cycle.

[0070] Of course, the aeration pipe 5 also serves a mixing function. Specifically, the upward force of the water flow generated by aeration keeps the sludge mixture in the tank in a circulating state, preventing sludge from settling and clumping at the bottom of the tank, especially at the bottom of the membrane fiber module 3. This makes the sludge, oxygen, and pollutants more evenly distributed throughout the membrane tank, avoiding stagnant areas and improving the reactor's efficiency and treatment effect.

[0071] It should be noted that this application includes an aeration pipe 5 below the membrane fiber assembly 3. This allows any deposits on the membrane fibers 31 to fall off and settle to the bottom. Air is then blown upwards through the aeration pipe 5, ensuring each membrane fiber 31 remains clean during operation. Connecting the aeration pipe 5 to the inner wall of the housing 1 effectively integrates the aeration pipe 5 with the housing 1, making the aeration pipe 5 more stable during aeration. Furthermore, the aeration pipe 5 can be transported together with the housing 1 when moving the membrane tank, facilitating its use. The aeration pipe 5 is made of plastic, reducing the number of welding points in the membrane tank, preventing corrosion, and extending its service life.

[0072] In addition, the air inlet 510 of the aeration pipe 5 is located at one end of the aeration main pipe 51 near the top of the box 1, which makes it convenient for the staff to transfer gas from the air inlet 510 into the aeration pipe 5.

[0073] In some embodiments, reference Figure 5 The membrane tank device also includes a connecting assembly 6, which includes a connecting plate 61, a support rod 62, and a pipe fixing ring 63. The connecting plate 61 is welded to the inner wall of the tank 1; the support rod 62 is connected to the connecting plate 61, and the pipe fixing ring 63 is connected to the support rod 62; the product water pipe 42 passes through the pipe fixing ring 63 to be connected to the inner wall of the tank 1; the aeration pipe 5 passes through the pipe fixing ring 63 to be connected to the inner wall of the tank 1; and the surface of the connecting plate 61 is provided with an anti-corrosion layer.

[0074] With the above setup, when connecting the water production pipe 42 and the aeration pipe 5 to the inner wall of the tank 1, the connecting component 6 can be connected to the inner wall of the tank 1 first. Specifically, the connecting plate 61 is connected to the inner wall of the tank 1, and then the water production pipe 42 and the aeration pipe 5 are inserted into different pipe fixing rings 63. In this way, the water production pipe 42 and the aeration pipe 5 can be firmly connected to the inner wall of the tank 1.

[0075] The size of the water production pipe 42 and the aeration pipe 5 can be designed according to the water volume in the tank 1. The length of the support rod 62 can be designed according to the size of the water production pipe 42 and the aeration pipe 5, and the connection position of the connecting plate 61 on the inner side wall of the tank 1 can be reasonably planned so that the water production pipe 42 and the aeration pipe 5 can pass through the corresponding pipe fixing ring 63. This can prevent the pipe bends of the water production pipe 42 and the aeration pipe 5 from cracking at the joint.

[0076] It should be noted that the connecting plate 61 can be made of carbon steel, so that the connecting plate 61 can be welded to the inner wall of the tank 1, improving the connection strength. At the same time, the weld point between the connecting plate 61 and the inner wall of the tank 1 is not easily corroded. Furthermore, in order to prevent the weld point between the connecting plate 61 and the inner wall of the tank 1 from being corroded, an anti-corrosion layer can be set on the surface of the connecting plate 61. This can effectively prevent the connection between the connecting plate 61 and the inner wall of the tank 1 from cracking due to corrosion of the weld point, ensuring a more reliable connection between the connecting plate 61 and the inner wall of the tank 1, thereby ensuring a more stable installation of the water production pipe 42 and the aeration pipe 5.

[0077] In some embodiments, the pipe retaining ring 63 can be a flexible non-metallic material, so that it can be adapted to different sizes of water production pipe 42 and aeration pipe 5, and can be firmly connected to water production pipe 42 and aeration pipe 5, making the installation of water production pipe 42 and aeration pipe 5 in the housing 1 more stable and secure.

[0078] Both ends of the pipe fixing ring 63 can be fixedly connected to the support rod 62. The product water pipe 42 and the aeration pipe 5 need to pass through the pipe fixing ring 63 during installation. In order to facilitate the connection between the aeration pipe 5 and the product water pipe 42 and the pipe fixing ring 63, one end of the pipe fixing ring 63 can be fixedly connected to the support rod 62, and the other end can be detachably connected to the support rod 62. In this way, when installing the product water pipe 42 and the aeration pipe 5, the pipe fixing ring 63 can be separated from the support rod 62 first. After the product water pipe 42 and the aeration pipe 5 are placed, the pipe fixing ring 63 can be connected to the support rod 62. This way, the product water pipe 42 and the aeration pipe 5 can be connected to the support rod 62, thus achieving a firm connection between the product water pipe 42 and the aeration pipe 5 and the inner wall of the box 1.

[0079] In some embodiments, reference Figure 2There are multiple support frames 2, which are divided into two groups. The two groups of support frames 2 are spaced apart along the first direction X. The first direction X, the depth direction Z of the box 1, and the extension direction Y of the support frame 2 are perpendicular to each other. Each group of support frames 2 can be detachably connected to the membrane fiber assembly 3.

[0080] It should be noted that by arranging two sets of support frames 2 at intervals along the first direction X, and detachably connecting a set of membrane fiber assemblies 3 to each set of support frames 2, it is equivalent to placing two sets of membrane fiber assemblies 3 simultaneously within the tank 1 for wastewater purification. This not only improves purification efficiency, but also, because the membrane fiber assemblies 3 are detachably connected to the support frames 2, compared to existing technologies where replacing the membrane fiber 31 requires lifting the entire membrane frame out of the membrane tank, increasing both cost and difficulty, and reducing efficiency, this application allows workers to replace the membrane fiber 31 simply by removing it from the support frame 2 and reinstalling a new one. This significantly reduces the difficulty of membrane fiber 31 replacement, lowers the cost, and greatly improves efficiency.

[0081] In related technologies, the membrane tank is made of concrete, and the membrane frame is made of stainless steel. The membrane frame is placed in the membrane tank for wastewater purification. When it is necessary to inspect or replace the membrane fibers 31, one method is for personnel to enter the membrane tank to operate. However, due to the large size of the membrane tank and membrane frame, not only does emptying the wastewater in the membrane tank take a long time, but there are also certain dangers for personnel entering the membrane tank. The membrane frame in the existing technology is a one-piece structure. In order to leave space for personnel to inspect or replace the membrane fibers 31 in the membrane tank, the membrane tank needs to be made larger to ensure that there is space between the membrane frame and the side wall of the membrane tank after it is placed in the membrane tank. However, this will increase the footprint of the membrane tank, and the application site will be limited by the size of the membrane tank.

[0082] In this embodiment, two sets of support frames 2 are spaced apart along the first direction X. The gap between the two sets of support frames 2 provides space for workers to inspect or replace the membrane fibers 31. When it is necessary to inspect or replace the membrane fibers 31, the wastewater in the tank 1 only needs to be emptied. Then, workers can enter the tank 1 through the opening at the top of the tank 1, which is the gap between the two sets of support frames 2, to inspect or replace the membrane fibers 31 of the membrane fiber assembly 3 connected to the two sets of support frames 2. This greatly improves the convenience and efficiency of inspecting or replacing the membrane fibers 31. Because the tank 1 is small in size, emptying the wastewater in the tank 1 only takes a short time, and the danger of workers entering the tank 1 is also reduced.

[0083] In some embodiments, reference Figure 6The bottom of the box 1 is provided with a mud hopper 7 that is connected to the box 1. The mud hopper 7 is used to collect impurities that settle naturally and fall off the membrane filaments 31. The bottom wall of the mud hopper 7 has a through-hole sludge outlet 71, and the sludge outlet 71 is equipped with a switch valve 72.

[0084] It should be noted that when the aeration pipe 5 aerates the membrane fibers 31 to shake them, impurities attached to the membrane fibers 31 will be shaken off and fall into the sludge hopper 7. Impurities that naturally settle in the wastewater within the tank 1 will also be collected in the sludge hopper 7. This application provides a drain outlet 71 on the bottom wall of the sludge hopper 7. When a large amount of impurities are collected in the sludge hopper 7, they can be discharged through the drain outlet 71 to free up space within the sludge hopper 7 for continued collection of impurities from the wastewater. A switch valve 72 can be installed at the drain outlet 71. The switch valve 72 is opened during discharge and closed after discharge. Specifically, the switch valve 72 can be a flange.

[0085] It is understandable that the drain outlet 71 is located on the bottom wall of the mud hopper 7, and the mud hopper 7 is connected to the bottom of the tank 1. In other words, the drain outlet 71, the mud hopper 7, and the tank 1 are interconnected. Not only can impurities, mud, and other pollutants in the mud hopper 7 be discharged through the drain outlet 71, but the wastewater contained in the tank 1 can also be emptied through the drain outlet 71 when the membrane wire 31 is being inspected or replaced, so that staff can enter the tank 1 to inspect or replace the membrane wire 31.

[0086] In some embodiments, reference Figure 1 and Figure 6 A support leg 11 is connected to the bottom outer side of the box 1. In the depth direction Z of the box 1, the height of the support leg 11 is greater than the depth of the mud hopper 7. A pad 12 is connected to the side surface of the support leg 11 away from the box 1. The orthographic projection of the support leg 11 on the box 1 is located within the orthographic projection of the pad 12 on the box 1.

[0087] It should be noted that by setting the support legs 11, the tank 1 can be placed stably on the ground of the sewage treatment site. The setting of the support legs 11 can create a certain space between the bottom of the tank 1 and the ground, which can make the sewage outlet 71 of the sludge hopper 7 a certain distance from the ground, making it easier for the sewage outlet 71 of the sludge hopper 7 to discharge sewage.

[0088] Furthermore, due to the large weight of the tank body 1 itself, and the fact that the inner wall of the tank body 1 is connected to the support frame 2, the water production pipe 42 and the aeration pipe 5, and the fact that the tank body 1 also needs to hold sewage, the support legs 11 set at the bottom of the tank body 1 need to bear a large weight. In order to enable the support legs 11 to stably support the tank body 1, a pad 12 can be connected to the surface of each support leg 11 away from the tank body 1, and the orthographic projection of the support leg 11 on the tank body 1 is located within the orthographic projection of the pad 12 on the tank body 1. That is to say, the area of ​​the pad 12 is larger than the area of ​​the surface of the support leg 11 away from the tank body 1. This increases the contact area between the support leg 11 and the ground, which is equivalent to dispersing the weight of the tank body 1, the sewage inside and the various components, and enhancing the stability of the tank body 1 when placed on the ground.

[0089] In some embodiments, reference Figure 1 The outer side of the box body 1 is provided with a first reinforcing rib 13 that surrounds the box body 1 in the circumference; the outer side of the box body 1 is also provided with a second reinforcing rib 14 that intersects with the first reinforcing rib 13.

[0090] It should be noted that the first reinforcing rib 13 and the second reinforcing rib 14 can strengthen the stress on the side wall of the tank 1, making the structure of the tank 1 more stable and preventing deformation and cracking due to the large pressure caused by holding a lot of sewage. Among them, the first reinforcing rib 13 is in the form of a clamp, which can strengthen the binding capacity of the tank 1, making the tank 1 more stable when the membrane tank device is working.

[0091] It is understandable that the first reinforcing rib 13 and the second reinforcing rib 14 can be made of carbon steel and can be welded to the outer side of the box body 1.

[0092] In some embodiments, reference Figure 1 The first reinforcing rib 13 is connected to a lifting lug 15, which is used for the crane to lift the box body 1 for movement.

[0093] It should be noted that the membrane tank device in this embodiment is an integral structure, which integrates the support frame 2, the product water pipe 42, the water collection pipe 41, the aeration pipe 5, and the membrane fiber assembly 3 into the box 1. In actual use, the membrane tank device of this application can be used as an independent sewage treatment unit. The lifting lug 15 is provided on the first reinforcing rib 13, which allows the crane hook to be directly hung on the lifting lug 15 when the staff moves the membrane tank device of this application, which greatly facilitates the staff in moving the membrane tank device. At the same time, it also makes the moving of the membrane tank device of this application more convenient and the application scenarios more extensive.

[0094] In this application, multiple membrane tank devices can be placed side-by-side for wastewater treatment, increasing the wastewater treatment capacity. The membrane tank devices can be moved by attaching a crane hook to the lifting lug 15, allowing multiple devices to be placed in their designated positions. Compared to existing technologies that require multiple membrane frames within the membrane tank to increase wastewater treatment capacity, thus increasing the tank's footprint and making it immobile, and resulting in waste and increased costs when wastewater treatment capacity decreases, the membrane tank device in this application is a standalone, small-volume wastewater treatment unit. It can treat small amounts of wastewater individually or multiple devices can treat large amounts of wastewater simultaneously, thus broadening its application scenarios.

[0095] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A membrane tank device, characterized in that, include: The housing (1) includes two first sidewalls (101) arranged opposite to each other; A support frame (2) is connected between the two first sidewalls (101); The membrane fiber assembly (3) includes a membrane fiber (31) and a membrane frame (32) connected to both ends of the membrane fiber (31). The membrane frame (32) has a hollow structure, and one end of the membrane frame (32) is detachably connected to the support frame (2). A water collection pipe (41) is connected to the support frame (2), and the water collection pipe (41) is connected to the other end of the membrane frame (32); A water production pipe (42) is connected to the inner wall of the box (1). One end of the water production pipe (42) is connected to the water collection pipe (41), and the other end of the water production pipe (42) is a water outlet (420). The water outlet (420) is close to the top of the box (1). Both the water collection pipe (41) and the water production pipe (42) are made of plastic.

2. The membrane tank device according to claim 1, characterized in that, The box body (1) and the support frame (2) are both made of carbon steel; The inner wall of the box (1) and the outer surface of the support frame (2) are both provided with an anti-corrosion layer.

3. The membrane tank device according to claim 2, characterized in that, The end of the support frame (2) is connected to a reinforcing plate (21), which is welded to the inner wall of the box (1); The surface of the reinforcing plate (21) is provided with an anti-corrosion layer.

4. The membrane tank device according to claim 2 or 3, characterized in that, Also includes: An aeration pipe (5) is connected to the inner wall of the box (1). The aeration pipe (5) includes an aeration main pipe (51) and a plurality of aeration branch pipes (52) connected to the aeration main pipe (51). The main aeration pipe (51) extends along the depth direction of the box (1), and the aeration branch pipe (52) is located on the side of the membrane filament (31) near the bottom surface of the box (1); The main aeration pipe (51) has an air inlet (510) located near the top of the housing (1), and the aeration branch pipe (52) has an aeration port for spraying air into the membrane filaments (31) to make the membrane filaments (31) vibrate. The aeration pipe (5) is made of plastic.

5. The membrane tank device according to claim 4, characterized in that, Also includes: The connecting assembly (6) includes a connecting plate (61), a support rod (62), and a pipe fixing ring (63). The connecting plate (61) is welded to the inner wall of the housing (1). The support rod (62) is connected to the connecting plate (61), and the pipe fixing ring (63) is connected to the support rod (62). The water production pipe (42) passes through the pipe fixing ring (63) to be connected to the inner wall of the box (1); The aeration pipe (5) passes through the pipe fixing ring (63) to be connected to the inner wall of the box (1); The surface of the connecting plate (61) is provided with an anti-corrosion layer.

6. The membrane tank device according to claim 4, characterized in that, The number of the support frame (2) is multiple, and the multiple support frames (2) are divided into two groups. The two groups of support frames (2) are spaced apart along a first direction. The first direction, the depth direction of the box (1) and the extension direction of the support frame (2) are perpendicular to each other. The membrane fiber assembly (3) can be detachably connected to each set of support frames (2).

7. The membrane tank device according to claim 4, characterized in that, The bottom of the box (1) is provided with a mud hopper (7) that communicates with the box (1). The mud hopper (7) is used to collect impurities that settle naturally and fall off the membrane filaments (31). The bottom wall of the mud hopper (7) has a through-hole (71) and the drain (71) is equipped with a switch valve (72).

8. The membrane tank device according to claim 7, characterized in that, The bottom outer side of the box (1) is connected to a support leg (11), and the height of the support leg (11) is greater than the depth of the mud bucket (7) in the depth direction of the box (1). A pad (12) is connected to the side surface of the support leg (11) away from the box (1), and the orthographic projection of the support leg (11) on the box (1) is located within the orthographic projection of the pad (12) on the box (1).

9. The membrane tank device according to claim 4, characterized in that, The outer side of the box (1) is provided with a first reinforcing rib (13) that surrounds the box (1) circumferentially; The outer side of the box (1) is also provided with a second reinforcing rib (14) that intersects with the first reinforcing rib (13).

10. The membrane tank device according to claim 9, characterized in that, The first reinforcing rib (13) is connected to a lifting lug (15), which is used for a crane to lift the box (1) for movement.

Images