Membrane aeration bioreactor convenient to clean

Abstract

The utility model discloses a membrane aeration bioreactor convenient to clean, which relates to the technical field of sewage treatment and comprises a filter tank, an MABR membrane component, a lifting component and a flushing component, a water inlet and a water outlet are arranged on two sides of the filter tank, an air inlet and an air outlet are respectively arranged at the top end of the filter tank, and the MABR membrane component comprises a membrane branch pipe and an MABR membrane layer. The membrane branch pipes are arranged in the filter box, the membrane branch pipes are communicated with an air inlet of the filter box, the two ends of the MABR membrane layer are arranged in the membrane branch pipes, the MABR membrane layer is communicated with the membrane branch pipes, the lifting assembly is arranged on one side in the filter box and is perpendicular to the MABR membrane layer, the flushing assembly comprises a transverse main pipe, a longitudinal branch pipe and a high-pressure spray head, the transverse main pipe is arranged on the lifting assembly, and the longitudinal branch pipe is arranged on the lifting assembly. The longitudinal branch pipe is inserted between the MABR film layers and is communicated with the MABR film layers, and the high-pressure nozzle is arranged on the longitudinal branch pipe. The membrane layer is convenient to clean, and the filtering effect of the reactor is ensured.

Description

Technical Field

[0001] The utility model belongs to the technical field of sewage treatment, and particularly relates to a membrane aeration bioreactor which is convenient to clean. Background Technique

[0002] A membrane-aerated biofilm reactor (MABR) is a product of the combination of membrane technology and biofilm technology. This technology supplies oxygen through a breathable membrane. Under the condition that the gas partial pressure is kept lower than the bubble point, the oxygen in the membrane tube cavity permeates through the micropores on the membrane wall and enters the outside of the tube cavity to achieve bubble-free aeration. The bubble-free aeration has a high mass transfer efficiency, and the oxygen utilization rate can be close to 100%, which is 5-7 times that of traditional aeration.

[0003] The membrane material of MABR can be used as a carrier, and a microbial film can be formed on the membrane surface. The oxygen from the inner side of the membrane tube cavity diffuses from the inside to the outside of the biofilm, and the substrate from the sewage diffuses from the surface to the inside of the biofilm. Due to the counter-diffusion of oxygen and substrate, a distinct layered structure is generated on the microbial film of the membrane module, which is an aerobic layer, an anoxic layer, and an anaerobic layer from the inside to the outside. The functional stratification of the microbial film in MABR enables the microbial film to independently complete the oxidation of organic pollutants in sewage and the synchronous nitrification reaction. However, in the existing membrane aeration bioreactor during use, when there is a surfactant in the wastewater, it is easy to generate foam and is not easy to remove. Some existing MABR membrane aeration bioreactors do not have a flushing structure. Since the MABR membrane layer is always in the sewage, the surface of the MABR membrane layer is prone to membrane fouling problems, which will reduce the filtration effect of the MABR membrane layer.

[0004] Therefore, how to provide a membrane aeration bioreactor that is convenient to clean has become a problem that needs to be considered by those skilled in the art. Content of the Utility Model

[0005] In view of this, the utility model provides a membrane aeration bioreactor that is convenient to clean. By adding a lifting component and a flushing component between the MABR membrane modules, the utility model facilitates a comprehensive cleaning of the MABR components and avoids membrane fouling from reducing the sewage treatment effect.

[0006] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0007] A membrane aeration bioreactor convenient for cleaning, comprising a filtration tank, an MABR membrane module, a lifting assembly and a flushing assembly. An inlet is arranged at the bottom end of one side of the filtration tank, and an outlet is arranged at the top end of the other side of the filtration tank. An air inlet and an exhaust port are respectively arranged at the top of the filtration tank. The MABR membrane module includes membrane branch pipes and an MABR membrane layer. The membrane branch pipes are arranged in the filtration tank in an array, and the membrane branch pipes are communicated with the air inlet of the filtration tank. Both ends of the MABR membrane layer are arranged in the membrane branch pipes, and the MABR membrane layer is communicated with the membrane branch pipes. The lifting assembly is arranged on one side inside the filtration tank and is perpendicular to the MABR membrane layer. The flushing assembly includes a transverse main pipe, longitudinal branch pipes and high-pressure nozzles. The transverse main pipe is arranged on the lifting assembly. The longitudinal branch pipes are inserted between the MABR membrane layers and are communicated with the longitudinal branch pipes. The high-pressure nozzles are arranged on the longitudinal branch pipes, and the high-pressure nozzles are arranged facing the MABR membrane layer.

[0008] Further, the lifting assembly includes a support frame, linear slide rails, waterproof sliders, a pipeline fixing plate and a waterproof electric push rod. The support frame is arranged on one side of the filtration tank body. The linear slide rails are arranged on both sides of the support frame. The waterproof sliders are slidably arranged on the linear slide rails. The pipeline fixing plate is arranged on the sliders. The waterproof electric push rod is arranged at the bottom of the support frame, and the telescopic end of the waterproof electric push rod is fixedly connected to the pipeline fixing plate.

[0009] Further, a sewage discharge port is arranged at the bottom of the filtration tank, and a sewage discharge valve is installed at the sewage discharge port.

[0010] Further, a coarse aeration assembly is further included, and the coarse aeration assembly is arranged around the sewage discharge port inside the filtration tank.

[0011] Further, a reinforcing rib is arranged between the transverse main pipe and the longitudinal branch pipes.

[0012] The beneficial effects of the present utility model are as follows: In the present utility model, sewage enters the filtration tank through the inlet, and the input gas enters the MABR membrane layer through the air inlet and the membrane branch pipes. Under the push of the gas partial pressure difference on both sides of the membrane, the gas in the membrane cavity directly diffuses into the sewage in the form of molecular state through the membrane wall, realizing bubble-free aeration. By arranging the flushing assembly on the lifting mechanism, the lifting mechanism can be used to powerfully and quickly flush the MABR membrane layer through the flushing assembly, and there is no need to disassemble and clean the MABR membrane layer again. The setting of the coarse aeration assembly is used to disturb the water body and stir the sewage to prevent it from depositing. Description of the Drawings

[0013] Figure 1 It is a cross-sectional view of the present utility model;

[0014] Figure 2 It is a schematic diagram of the internal structure of the filtration tank of the present utility model;

[0015] Figure 3 This is a schematic structural diagram of the MABR membrane module of the present utility model;

[0016] Figure 4 This is a schematic structural diagram of the lifting component and the flushing component of the present utility model.

[0017] In the figure:

[0018] 1. Filter tank; 2. Water inlet; 3. Water outlet; 4. Drain port; 5. Drain valve; 6. Membrane branch pipe; 7. MABR membrane layer; 8. Horizontal main pipe; 9. Vertical branch pipe; 10. High-pressure spray head; 11. Support frame; 12. Linear slide rail; 13. Reinforcing rib; 14. Pipeline fixing plate; 15. Waterproof electric push rod; 16. Coarse aeration component. Specific embodiments

[0019] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model.

[0020] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "horizontal", "inner", "outer", "one side", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present utility model 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 utility model; the terms "first", "second", "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In addition, unless otherwise clearly defined and limited, the terms "installation", "connection", "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0021] Embodiment 1

[0022] As Figures 1-4 shown, this embodiment discloses a membrane aeration bioreactor that is convenient to clean, including a filter tank 1, an MABR membrane module, a lifting component, and a flushing component. A water inlet 2 is provided at the bottom end of one side of the filter tank 1, a water outlet 3 is provided at the top end of the other side of the filter tank 1, an air inlet and an air outlet are respectively provided at the top of the filter tank 1, a drain port 4 is provided at the bottom of the filter tank 1, and a drain valve 5 is installed at the drain port 4.

[0023] Specifically, the MABR membrane module includes membrane branch pipes 6 and an MABR membrane layer 7. The membrane branch pipes 6 are longitudinally arranged and communicated with each other in the filtration tank 1. The membrane branch pipes 6 are communicated with the air inlet of the filtration tank 1. Both ends of the MABR membrane layer 7 are arranged in the membrane branch pipes 6, and the MABR membrane layer 7 is communicated with the membrane branch pipes 6. The membrane branch pipes 6 are used for supporting and aerating the MBAR membrane layer 7. The lifting assembly is arranged on one side inside the filtration tank 1 and is perpendicular to the MABR membrane layer 7. The flushing assembly includes a transverse main pipe 8, longitudinal branch pipes 9, and high-pressure nozzles 10. The transverse main pipe 8 is arranged on the lifting assembly. The longitudinal branch pipes 9 are arranged between the MABR membrane layers 7 and are communicated with the longitudinal branch pipes 9. Reinforcing ribs 13 are arranged between the transverse main pipe 8 and the longitudinal branch pipes 9. The high-pressure nozzles 10 are installed on the longitudinal branch pipes 9, and the high-pressure nozzles 10 are arranged facing the MABR membrane layer 7.

[0024] As a preferred embodiment of the present invention, the lifting assembly includes a support frame 11, linear slide rails 12, waterproof sliders, a pipeline fixing plate 14, and a waterproof electric push rod 15. The support frame 11 is arranged on one side of the filtration tank 1 body. The linear slide rails 12 are arranged on both sides of the surface of the support frame 11. The waterproof sliders are slidably arranged on the linear slide rails 12. The pipeline fixing plate 14 is installed on the waterproof sliders. The waterproof electric push rod 15 is arranged at the bottom of the support frame 11. The telescopic end of the waterproof electric push rod 15 is fixedly connected to the pipeline fixing plate 14. By controlling the extension and contraction of the waterproof electric push rod 15, the lifting of the flushing assembly can be controlled, so that the flushing assembly can complete rapid flushing between the MABR membrane layers 7 and cover all areas of the MABR membrane layer 7.

[0025] As a preferred embodiment of the present invention, the filtration tank 1 is further equipped with a rough aeration assembly 16. The rough aeration assembly 16 is arranged around the sewage discharge port 4 inside the filtration tank 1, without affecting the discharge of pollutants from the sewage discharge port after the flushing assembly flushes the membrane layer. The rough aeration assembly 16 is used to disturb the water body and stir the sewage to prevent its deposition.

[0026] Although the specific implementation manners of the present invention are described above in conjunction with the drawings, it is not a limitation to the protection scope of the present invention. Those skilled in the art should understand that based on the technical solutions of the present invention, various modifications or deformations that can be made by those skilled in the art without creative labor are still within the protection scope of the present invention.

Claims

1. A membrane aeration bioreactor that is convenient for cleaning, characterized in that, It includes a filtration tank, a MABR membrane module, a lifting component and a flushing component. At the bottom of one side of the filtration tank, a water inlet is provided. At the top of the other side of the filtration tank, a water outlet is provided. At the top of the filtration tank, an air inlet and an exhaust port are respectively provided. The MABR membrane module includes membrane branch pipes and a MABR membrane layer. The membrane branch pipes are arranged in the filtration tank. The membrane branch pipes are connected to the air inlet of the filtration tank. Both ends of the MABR membrane layer are arranged in the membrane branch pipes, and the MABR membrane layer is connected to the membrane branch pipes. The lifting component is arranged on one side inside the filtration tank, perpendicular to the MABR membrane layer. The flushing component includes a horizontal main pipe, vertical branch pipes and high-pressure nozzles. The horizontal main pipe is arranged on the lifting component. The vertical branch pipes are inserted between the MABR membrane layers and are connected to the horizontal main pipe. The high-pressure nozzles are arranged on the vertical branch pipes, and the high-pressure nozzles are arranged facing the MABR membrane layer.

2. The membrane aeration bioreactor convenient for cleaning according to claim 1, wherein The lifting component includes a support frame, a linear slide rail, a waterproof slider, a pipeline fixing plate and a waterproof electric push rod. The support frame is arranged on one side of the filtration tank body. The linear slide rail is arranged on both sides of the support frame. The waterproof slider is slidably arranged on the linear slide rail. The pipeline fixing plate is arranged on the slider. The waterproof electric push rod is arranged at the bottom of the support frame, and the telescopic end of the waterproof electric push rod is fixedly connected to the pipeline fixing plate.

3. A membrane aeration bioreactor that is convenient for cleaning according to claim 1, characterized in that, A sewage outlet is provided at the bottom of the filtration tank, and a sewage valve is installed at the sewage outlet.

4. The membrane aeration bioreactor convenient for cleaning according to claim 3, wherein It further includes a rough aeration component, and the rough aeration component is arranged around the sewage outlet inside the filtration tank.

5. A membrane aeration bioreactor that is convenient for cleaning according to claim 1, wherein, Reinforcing ribs are arranged between the horizontal main pipe and the vertical branch pipes.

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