Movable MBR (Membrane Bioreactor) membrane pool device

Abstract

The utility model discloses a movable MBR (Membrane Bioreactor) membrane pool device, which relates to the technical field of MBR membrane pools, and comprises a membrane pool body and a membrane frame, the inner side of the membrane pool body is fixedly connected with a connecting ring at the top of the membrane frame, the top of the connecting ring is fixedly connected with a hanging bracket, the inner side of the top of the membrane frame is fixedly connected with a water collecting pipe, and the inner side of the top of the membrane frame is fixedly connected with the hanging bracket. According to the utility model, the stirring piece is arranged on the side surface of the aeration pipe arranged on the side surface of the membrane tank body, so that an original anoxic tank can be adjusted to be an anaerobic tank, a stirring device is added, an original aerobic tank can be adjusted to be an anoxic tank, the stirring device is optimized, and the aeration pipe is arranged on the side surface of the membrane tank body; the original MBR membrane tank is adjusted into the aerobic tank, a two-grid MBR membrane tank and a matched water outlet and reflux pump set and the like are additionally arranged, and the top of a membrane frame slides on the inner side of a slip rope through a hanging bracket mounted on a connecting ring, so that convenience can be provided for hoisting and overhauling of an MBR membrane.

Description

Technical Field

[0001] The utility model relates to the technical field of MBR membrane tanks, and particularly relates to a movable MBR membrane tank device. Background Art

[0002] For the 500-ton domestic sewage treatment project in Shejiang, Meizhou, which has entered the operation stage, the original membrane tank is 6 meters high, and it is inconvenient for hoisting and maintenance at high places. For the convenience of operation and maintenance, a new MIBR membrane tank will be built and placed on the ground of the sewage treatment plant. The project includes the construction of a new carbon steel structure membrane tank, membrane rack, membrane replacement, maintenance and hoisting equipment, and the relocation of old equipment, pipelines, etc.

[0003] After retrieval, the MBR membrane pool bubble defoaming device with the publication number CN202120748287.1 includes an MBR membrane pool main body. Inside the MBR membrane pool main body, several MBR membrane pool components are installed. On both sides of the MBR membrane pool components, second wedge blocks are installed. On the side of the second wedge block away from the MBR membrane pool component, a disassembly device is installed. The disassembly device includes a housing. On one side of the housing, a first wedge block is installed. The first wedge block is connected to the second wedge block. On one side of the first wedge block, a first pull rod is installed. On the side of the first pull rod away from the first wedge block, a cross bar is installed. The number of cross bars is two groups. On the side of the cross bar away from the first pull rod, a second pull rod is installed. In the middle of the cross bar, a spring is installed. One side of the spring is connected to the housing, and the side of the spring away from the housing is connected to the first pull rod. At the bottom end of the MBR membrane pool component, a fixing block is installed. The various MBR membrane pool components are connected through the fixing block. At the top end of the MBR membrane pool component, a support block is installed. On the side of the support block away from the MBR membrane pool component, an air pump is installed. On one side of the air pump, a first air pipe is installed. On the side of the first air pipe away from the air pump, a pulse valve is installed. At the bottom end of the pulse valve, a second air pipe is installed. The side of the second air pipe away from the pulse valve is connected to the MBR membrane pool component. For this MBR membrane pool bubble defoaming device, through the connection between the first wedge block and the second wedge block in the disassembly device, when placing the MBR membrane pool component, it can be quickly installed and fixed without pulling the second pull rod, avoiding the service life of the disassembly device caused by frequent use. At the same time, when disassembling, as long as the user pulls the second pull rod, the MBR membrane pool component can be easily taken out, effectively reducing the time wasted in installing or replacing the MBR membrane pool component and avoiding troublesome replacement. Through the pulse valve, the MBR membrane pool component can be made to vibrate. When the MBR membrane pool component is impacted, the sludge attached to the MBR membrane pool component slides off, thereby reducing the probability of blockage of the MBR membrane pool component. In the existing MBR membrane pool after long-term use, the MBR membrane has aged or there is a membrane blockage phenomenon, and the water outlet effect is not good. The original membrane pool is installed on the ground with a height of 6 meters, resulting in inconvenient hoisting and maintenance of the MBR membrane. Summary of the Utility Model

[0004] The purpose of the present utility model is to provide a movable MBR membrane pool device to solve the existing problems.

[0005] To achieve the above object, the utility model provides the following technical solutions: A movable MBR membrane tank device, including a membrane tank body and a membrane rack. Inside the membrane tank body, at the top of the membrane rack, there is a fixedly connected connecting ring. At the top of the connecting ring, there is a fixedly connected hanging rack. Inside the top of the membrane rack, there is a fixedly connected water collecting pipe. On the side of the water collecting pipe, there is a fixedly connected and communicated total membrane component water production pipe. At the bottom of the membrane rack, there is a lower suspension rack. At the top of the membrane tank body, there is a fixedly connected and communicated water inlet. On the side of the membrane tank body, there is a weak current box and a distribution box. The original MBR tank is transformed into an aerobic tank. The nitrification liquid reflux pump of the original aerobic tank is moved to the aerobic tank transformed from the original MBR tank, and the original sludge reflux pump is moved to the newly built MBR membrane tank. A steel structure membrane tank (newly added membrane, membrane rack and hoisting and maintenance equipment device) is built. Other equipment such as suction pumps, backwashing pumps, and dosing pumps and pipelines are reconnected. After the sewage system collects the sewage, through the grille, particulate impurities are removed and then enter the regulating tank for homogenization and equalization. A liquid level controller is set in the regulating tank. After the signal is transmitted by the liquid level control instrument, it is sent to the anoxic tank by the lift pump. In the anoxic tank, denitrifying bacteria use the organic matter in the sewage as a carbon source to reduce the large amount of nitrate nitrogen and nitrite nitrogen brought in the reflux mixed liquid to nitrogen gas and release it into the air, thereby achieving the purpose of removing total nitrogen. The sewage after anoxic denitrification flows into the aerobic tank for aerobic reaction and nitrification reaction. Among them, aerobic microorganisms degrade the organic matter, and the BOD continuously decreases. Under the condition of sufficient oxygen supply, the nitrification of nitrifying bacteria oxidizes NH3N (NH4+) to NO3-. Organic nitrogen is ammoniated and then nitrified, resulting in a significant decrease in ammonia nitrogen concentration. The nitrate nitrogen increased during the nitrification process is returned to the anoxic tank through reflux control for denitrification to remove total nitrogen, forming a nitrogen removal cycle. After the water outlet of the aerobic tank enters the MBR membrane tank for solid-liquid separation, it is suctioned into the clear water tank and discharged after ultraviolet disinfection. The sundries intercepted by the grille are regularly loaded into a trolley and dumped into the landfill. Part of the sludge in the MBR membrane tank is refluxed to the anoxic tank, and part of the sludge is regularly discharged for external treatment.

[0006] As a preferred technical solution of the utility model, an aeration pipe is provided on the side of the membrane tank body. On the side of the aeration pipe, there is a stirring member. The stirring member includes a stirring paddle and a rotating shaft. An aeration pipe provided on the side of the membrane tank body is provided with a stirring member on its side, which can adjust the original anoxic tank into an anaerobic tank, increase the stirring equipment, adjust the original aerobic tank into an anoxic tank, and optimize the stirring equipment, which can make the reaction inside the anaerobic tank more sufficient.

[0007] As a preferred technical solution of the utility model, the hanging rack is slidably connected to the inside of the sliding cable. The original MBR membrane tank is adjusted into an aerobic tank, and a new 2-grid MBR membrane tank and supporting water outlet, reflux pump group, etc. are added. The hanging rack installed on the top of the membrane rack through the connecting ring is slidably connected to the inside of the sliding cable, which can facilitate the hoisting and maintenance of the MBR membrane.

[0008] As a preferred technical solution of the present utility model, a membrane module purge inlet pipe is fixedly connected to the top of the membrane rack, and the membrane module purge inlet pipe is located on the left side of the water collecting pipe.

[0009] As a preferred technical solution of the present utility model, a membrane module upper and lower end water production connecting pipe is fixedly connected to the side of the membrane rack, and the membrane module upper and lower end water production connecting pipe is communicated with the bottom of the water collecting pipe at the top of the membrane rack.

[0010] As a preferred technical solution of the present utility model, an overflow port is fixedly connected and communicated to the left side of the membrane tank body.

[0011] As a preferred technical solution of the present utility model, a water production lift pump and a sludge return pump are respectively communicated with the bottom of the membrane tank body, and one ends of the water production lift pump and the sludge return pump are respectively communicated with a water production tank and a reaction tank.

[0012] As a preferred technical solution of the present utility model, drain interfaces are provided on the side of the membrane tank body, and the number of the drain interfaces is two.

[0013] As a preferred technical solution of the present utility model, liquid level gauges are fixedly connected to the inside of the membrane tank body, and the number of the liquid level gauges is two.

[0014] As a preferred technical solution of the present utility model, an external power supply connection joint is provided on the side of the distribution box.

[0015] Compared with the prior art, the beneficial effects of the present utility model are:

[0016] 1. The utility model transforms the original MBR tank into an aerobic tank, moves the nitrification liquid reflux pump of the original aerobic tank into the aerobic tank transformed from the original MBR tank, moves the original sludge reflux pump into the newly built MBR membrane tank, builds a new steel structure membrane tank (new membranes, membrane racks and hoisting and maintenance equipment devices), reconnects other equipment such as suction pumps, backwashing pumps, and dosing pumps and pipelines. After the sewage system collects the sewage, it removes particulate impurities through a grille and enters the regulating tank for homogenization and equalization. A liquid level controller is set in the regulating tank. After the signal is transmitted by the liquid level control instrument, it is sent to the anoxic tank by a lift pump. In the anoxic tank, denitrifying bacteria use the organic matter in the sewage as a carbon source to reduce the large amount of nitrate nitrogen and nitrite nitrogen brought in the reflux mixture to nitrogen gas and release it into the air, so as to achieve the purpose of removing total nitrogen. The sewage after anoxic denitrification flows into the aerobic tank for aerobic reaction and nitrification reaction. Among them, aerobic microorganisms degrade the organic matter, and the BOD continuously decreases. Under sufficient oxygen supply conditions, the nitrification of nitrifying bacteria oxidizes NH3N (NH4+) to NO3-. Organic nitrogen is ammoniated and then nitrified, resulting in a significant decrease in ammonia nitrogen concentration. The nitrate nitrogen increased during the nitrification process is returned to the anoxic tank through reflux control for denitrification to remove total nitrogen, forming a nitrogen removal cycle. The effluent from the aerobic tank enters the MBR membrane tank for solid-liquid separation, and then is suctioned into the clear water tank and discharged after ultraviolet disinfection. The sundries intercepted by the grille are regularly loaded into a trolley and dumped into the landfill. Part of the sludge in the MBR membrane tank is refluxed to the anoxic tank, and part of the sludge is regularly discharged for external treatment.

[0017] 2. The utility model is provided with a stirring member on the side of the aeration pipe on the side of the membrane tank body, which can adjust the original anoxic tank into an anaerobic tank, add stirring equipment, adjust the original aerobic tank into an anoxic tank, and optimize the stirring equipment, which can make the reaction inside the anaerobic tank more sufficient. The original MBR membrane tank is adjusted into an aerobic tank, and a new 2-grid MBR membrane tank and supporting effluent, reflux pump group, etc. are added. The hanging frame installed on the top of the membrane rack through the connecting ring slides inside the cable, which can facilitate the hoisting and maintenance of the MBR membrane. Description of the Drawings

[0018] Figure 1 It is a schematic internal structure diagram of the utility model;

[0019] Figure 2 It is a schematic external structure diagram of the utility model;

[0020] Figure 3 It is a structural aeration diagram of the utility model;

[0021] Figure 4 It is a system flow chart of the utility model.

[0022] In the figure: 1. Membrane tank body; 2. Aeration pipe; 3. Stirring member; 4. Membrane rack; 5. Connecting ring; 6. Hanging bracket; 7. Total water production pipe of membrane module; 8. Lower suspension bracket; 9. Water production connecting pipe between upper and lower ends of membrane module; 10. Water collecting pipe; 11. Blowing inlet pipe of membrane module; 12. Water inlet; 13. Overflow port; 14. Water production lift pump; 15. Sludge reflux pump; 16. External power supply connector; 17. Liquid level gauge; 18. Drainage interface; 19. Distribution box; 20. Weak current box. Detailed implementation manners

[0023] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0024] Please refer to Figures 1-4, the utility model provides a movable MBR membrane tank device, which includes a membrane tank body 1 and a membrane rack 4. A connecting ring 5 is fixedly connected to the inner side of the membrane tank body 1 at the top of the membrane rack 4. A hanging frame 6 is fixedly connected to the top of the connecting ring 5. A water collecting pipe 10 is fixedly connected to the inner side of the top of the membrane rack 4. A total membrane module product water pipe 7 is fixedly connected and communicated with the side of the water collecting pipe 10. A lower hanging frame 8 is arranged at the bottom of the membrane rack 4. An inlet 12 is fixedly connected and communicated with the top of the membrane tank body 1. A weak current box 20 and a distribution box 19 are arranged on the side of the membrane tank body 1. The original MBR tank is transformed into an aerobic tank. The nitrification liquid return pump of the original aerobic tank is moved into the aerobic tank transformed from the original MBR tank, and the original sludge return pump is moved into the newly built MBR membrane tank. A steel structure membrane tank (new membrane, membrane rack 4 and hoisting and maintenance equipment device) is newly built. Other equipment such as suction pumps, backwashing pumps, and dosing pumps and pipelines are reconnected. After the sewage system collects the sewage, it passes through a grille to remove particulate impurities and enters the regulation tank for homogenization and equalization. A liquid level controller is arranged in the regulation tank. After the signal is transmitted by the liquid level control instrument, it is sent to the anoxic tank by a lift pump. In the anoxic tank, denitrifying bacteria use the organic matter in the sewage as a carbon source to reduce the large amount of nitrate nitrogen and nitrite nitrogen brought into the reflux mixed liquid to nitrogen gas and release it into the air, so as to achieve the purpose of removing total nitrogen. The sewage after anoxic denitrification flows into the aerobic tank for aerobic reaction and nitrification reaction. Among them, aerobic microorganisms degrade the organic matter, and the BOD continuously decreases. Under sufficient oxygen supply conditions, the nitrification of nitrifying bacteria oxidizes NH3N (NH4+) to NO3-. Organic nitrogen is ammoniated and then nitrified, resulting in a significant decrease in ammonia nitrogen concentration. The nitrate nitrogen increased during the nitrification process is returned to the anoxic tank through reflux control for denitrification to remove total nitrogen, forming a denitrification cycle. After the water outlet of the aerobic tank enters the MBR membrane tank for solid-liquid separation, it is suctioned into the clear water tank and discharged after ultraviolet disinfection. The sundries intercepted by the grille are regularly loaded into a trolley and dumped into the landfill. Part of the sludge in the MBR membrane tank is refluxed to the anoxic tank, and part of the sludge is regularly discharged for external treatment.

[0025] An aeration pipe 2 is arranged on the side of the membrane tank body 1. A stirring member 3 is arranged on the side of the aeration pipe 2. The stirring member 3 includes a stirring paddle and a rotating shaft. The stirring member 3 arranged on the side of the aeration pipe 2 arranged on the side of the membrane tank body 1 can adjust the original anoxic tank into an anaerobic tank and increase the stirring equipment. The original aerobic tank is adjusted into an anoxic tank, and the stirring equipment is optimized, which can make the reaction inside the anaerobic tank more sufficient. The hanging frame 6 is slidably connected to the inner side of the cable. The original MBR membrane tank is adjusted into an aerobic tank, and a new 2-grid MBR membrane tank and supporting water outlet, reflux pump group, etc. are added. The hanging frame 6 installed on the top of the membrane rack 4 through the connecting ring 5 is slidably connected to the inner side of the cable, which can facilitate the hoisting and maintenance of the MBR membrane. A membrane module purging inlet pipe 11 is fixedly connected to the top of the membrane rack 4. The membrane module purging inlet pipe 11 is located on the left side of the water collecting pipe 10.

[0026] On the side of the membrane rack 4, there is a water production connecting pipe 9 for the upper and lower ends of the membrane module, and the water production connecting pipe 9 for the upper and lower ends of the membrane module is connected to the bottom of the water collecting pipe 10 at the top of the membrane rack 4. On the left side of the membrane tank body 1, there is a fixed connection and communication with an overflow port 13. Respectively communicated at the bottom of the membrane tank body 1 are a water production lift pump 14 and a sludge return pump 15, and one ends of the water production lift pump 14 and the sludge return pump 15 are respectively connected and communicated with a water production tank and a reaction tank.

[0027] On the side of the membrane tank body 1, there are emptying interfaces 18, and the number of the emptying interfaces 18 is two. Inside the membrane tank body 1, there is a fixed connection with a liquid level gauge 17, and the number of the liquid level gauges 17 is two. On the side of the distribution box 19, there is an external power supply connection joint 16.

[0028] During specific use, first of all, for the vehicle-mounted integrated MBR membrane treatment equipment, the effluent from the aerobic tank flows by gravity to the membrane tank, produces water through the negative pressure filtration of the membrane hollow, and uses the sludge return pump 15 to maintain the sludge concentration in the membrane tank. The equipment can be powered by directly connecting the current power supply to the supporting electric box. Connect the total water production pipe 7 of the membrane module, the purge air inlet pipe 11 of the membrane module, the sludge discharge pipe, the return pipe, etc. with quick connectors. The operation mode is: control the start and stop of the water production lift pump 14 according to the height of the liquid level in the membrane tank. On the side of the aeration pipe 2 provided on the side of the membrane tank body 1, there is a stirring member 3, which can adjust the original anoxic tank to an anaerobic tank, add stirring equipment, adjust the original aerobic tank to an anoxic tank, and optimize the stirring equipment, so that the reaction inside the anaerobic tank is more sufficient. The original MBR membrane tank is adjusted to an aerobic tank, and a new 2-grid MBR membrane tank and supporting water outlet, return pump group, etc. are added. The hanger 6 installed on the top of the membrane rack 4 through the connecting ring 5 slides inside the cable, which is convenient for the hoisting and maintenance of the MBR membrane.

[0029] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

Claims

1. A movable MBR membrane tank device, comprising a membrane tank body (1) and a membrane rack (4), characterized in that: The inner side of the membrane pool body (1) is located at the top of the membrane frame (4) and is fixedly connected to a connecting ring (5), the top of the connecting ring (5) is fixedly connected to a hanger (6), the inner side of the top of the membrane frame (4) is fixedly connected to a water collecting pipe (10), the side of the water collecting pipe (10) is fixedly connected and connected to a total water production pipe (7) of the membrane assembly, the bottom of the membrane frame (4) is provided with a lower hanging frame (8), the top of the membrane pool body (1) is fixedly connected and connected to a water inlet (12), and the side of the membrane pool body (1) is provided with a weak current box (20) and a distribution box (19).

2. The movable MBR membrane tank device according to claim 1, characterized in that: An aeration pipe (2) is provided on the side of the membrane pool body (1), and a stirring member (3) is provided on the side of the aeration pipe (2), wherein the stirring member (3) comprises a stirring paddle and a rotating shaft.

3. A movable MBR membrane tank device according to claim 1, characterized in that: The hanger (6) is slidably connected to the inner side of the slide rope.

4. A movable MBR membrane tank device according to claim 1, characterized in that: A membrane assembly purge air inlet pipe (11) is fixedly connected to the top of the membrane frame (4), and the membrane assembly purge air inlet pipe (11) is located on the left side of the water collecting pipe (10).

5. A movable MBR membrane tank device according to claim 1, characterized in that: The side of the membrane frame (4) is fixedly connected with the upper and lower water production connecting pipes (9) of the membrane assembly, and the upper and lower water production connecting pipes (9) of the membrane assembly are connected to the bottom of the water collecting pipe (10) at the top of the membrane frame (4).

6. The movable MBR membrane tank device according to claim 1, characterized in that: The left side of the membrane pool body (1) is fixedly connected and communicated with an overflow port (13).

7. The movable MBR membrane tank device according to claim 1, wherein: The bottom of the membrane tank body (1) is connected to a water production lift pump (14) and a sludge return pump (15), respectively. One end of the water production lift pump (14) and the sludge return pump (15) are connected to the water production tank and the reaction tank, respectively.

8. A movable MBR membrane tank device according to claim 1, characterized in that: The side of the membrane pool body (1) is provided with an emptying interface (18), and the number of the emptying interfaces (18) is two.

9. A movable MBR membrane tank device according to claim 1, characterized in that: A liquid level meter (17) is fixedly connected to the inner side of the membrane pool body (1), and the number of the liquid level meters (17) is two.

10. The movable MBR membrane tank device according to claim 1, wherein: An external power supply connector (16) is provided on the side of the distribution box (19).

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