A membrane bioreactor

Abstract

The utility model relates to sewage treatment technical field, the utility model provides a membrane bioreactor, including raw water pool, the raw water pool front is equipped with the treatment pond, the inside fixed mounting of treatment pond is equipped with mounting bracket, the outer end fixed mounting of mounting bracket is equipped with membrane cloth, the right side upper end fixed connection of membrane cloth is equipped with the water suction pipe, the right side fixed mounting of water suction pipe is equipped with the concentration pipe, the gas pipe is fixedly connected in the inside center of membrane cloth, and the lower end fixed mounting of gas pipe is equipped with the trident pipe, both sides fixed mounting of trident pipe is equipped with the fixed plate, solved the original membrane bioreactor when using adopt multilayer membrane cloth membrane layer to filter the impurity, after long -time use, the upper end of membrane cloth is attached with a large number of impurities, lead to the filtration effect of membrane cloth reduces, influence the follow -up use, the membrane bioreactor is installed with the aeration pipe, and the aeration pipe is easy to block the outlet with the impurity when using, causes the aeration pipe to be completely blocked, cannot continue to use the technical problem.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment technology, specifically to a membrane bioreactor. Background Technology

[0002] A biofilm reactor is a water treatment device that utilizes microorganisms to attach to the surface of packing materials and form a biofilm structure. It belongs to the biofilm method within wastewater biological treatment technology, and is parallel to the activated sludge method. Its core principle is to use the packing materials as a carrier, allowing microorganisms to grow, metabolize, and decompose organic pollutants in the water. It is widely used in municipal wastewater and industrial wastewater treatment, as well as in laboratory research.

[0003] The existing dimethyl disulfide wastewater treatment uses membrane bioreactor filtration. The original membrane bioreactor uses multiple layers of membrane cloth to filter impurities. After long-term use, a large amount of impurities adhere to the upper part of the membrane cloth, which reduces the filtration effect of the membrane cloth and affects subsequent use. The membrane bioreactor is equipped with aeration pipes. When using the aeration pipes, the air outlet is easily blocked by impurities, causing the aeration pipes to be completely blocked and unable to continue to be used. Utility Model Content

[0004] To overcome the above-mentioned defects, this utility model provides a membrane bioreactor, which solves the technical problems of the original membrane bioreactor using multiple layers of membrane cloth to filter impurities. After long-term use, a large amount of impurities adhere to the upper end of the membrane cloth, which reduces the filtration effect of the membrane cloth and affects subsequent use. In addition, the membrane bioreactor is equipped with aeration pipe, and the outlet of the aeration pipe is easily blocked by impurities, causing the aeration pipe to be completely blocked and unable to continue to be used.

[0005] According to one aspect, at least one embodiment of the present invention provides a membrane bioreactor, comprising: a raw water tank, a treatment tank installed in front of the raw water tank, an installation frame fixedly installed inside the treatment tank, a membrane cloth fixedly installed at the outer end of the installation frame, a water pumping pipe fixedly connected to the upper right end of the membrane cloth, and a central pipe fixedly installed on the right side of the water pumping pipe;

[0006] The gas supply pipe is fixedly connected to the center inside the membrane cloth, and a three-pronged pipe is fixedly installed at the lower end of the gas supply pipe. Fixing plates are fixedly installed on both sides of the three-pronged pipe, and a nozzle is fixedly installed at the upper end of the fixing plates. A connection port is fixedly opened at the center above the gas supply pipe, and a connecting pipe is fixedly connected to the upper end of the connection port.

[0007] For example, in at least one embodiment of the present invention, a membrane bioreactor further includes: a fine screen installed at the upper end of the inside of the raw water tank, an inlet pipe fixedly connected to the upper end of the fine screen, a first conveying pipe fixedly installed at the front of the inside of the raw water tank, an anoxic tank fixedly installed at the front end of the first conveying pipe, and a baffle fixedly installed inside the anoxic tank; a second conveying pipe fixedly installed at the upper end of the treatment tank, and an impurity tank fixedly installed at the front end of the second conveying pipe.

[0008] For example, in at least one embodiment of the present invention, a membrane bioreactor further includes: a first aeration pipe fixedly installed at the bottom end of the membrane cloth, a jet pipe fixedly installed at the upper end of the first aeration pipe, a connecting air pipe fixedly connected to the left side of the first aeration pipe, a second aeration pipe fixedly installed to the left side of the connecting air pipe, a conveying pipe three installed behind the left side of the second aeration pipe, and a blower fixedly installed at the front end of the conveying pipe three, and a water supply pipe installed in front of the left side of the second aeration pipe.

[0009] For example, in at least one embodiment of the present invention, a membrane bioreactor further includes: mounting strips fixedly installed on both sides of the upper end of the mounting frame; four membrane sheets; a gas delivery pipe in the shape of a "Π"; downwardly inclined structures on both sides of the three-pronged pipe; a hollow structure inside the fixing plate; and outwardly inclined structures on both sides of the nozzle.

[0010] For example, in at least one embodiment of the present invention, a membrane bioreactor further includes: the fixing plate is symmetrically installed on both sides of the three-way pipe with the three-way pipe as the central reference, and the connecting pipe is installed parallel to the pumping pipe.

[0011] For example, in at least one embodiment of the present invention, a membrane bioreactor further includes: a support frame fixedly installed on the upper end of the inner wall of the raw water tank; the fine grid is a detachable structure, and an insertion hole is fixedly opened on the upper end of the fine grid; a first conveying pipe is connected to the raw water tank through the insertion hole; and the first conveying pipe connects the raw water tank and the anoxic tank.

[0012] For example, in at least one embodiment of the present invention, a membrane bioreactor further includes: an opening at the upper end of the partition plate, the opening connecting the anoxic pool and the treatment pool; and a second conveying pipe having the same structure as the first conveying pipe, connecting the treatment pool and the impurity pool.

[0013] For example, in at least one embodiment of the present invention, a membrane bioreactor further includes: the first aeration pipe and the second aeration pipe have the same structure; the jet pipe is inverted conical in shape; the diameter of the jet pipe is larger at the top and smaller at the bottom; the delivery pipe is parallel to the water delivery pipe; and the connecting air pipe is symmetrically installed on both sides of the first aeration pipe with the first aeration pipe as the center reference.

[0014] The beneficial effects of the embodiments of this utility model are as follows:

[0015] In this invention, an air jet structure is added inside the membrane fabric, and a Π-shaped air supply pipe is installed with two layers of three-way pipes. The air jet structure at different heights sprays out impurities from the upper end of the template. The above arrangement, by setting up staggered air jet structures at different heights, sprays off the impurities adsorbed inside the membrane fabric. In addition, in this device, an air jet pipe is added to the upper end of the aeration pipe. The diameter of the air jet pipe is larger at the top and smaller at the bottom, so that impurities accumulate on the outer expansion structure of the air jet pipe. A water supply pipe is added to the air jet pipe. Compressed air mixed with clean water is injected into the aeration pipe to powerfully flush away scale and deposits. The above arrangement reduces the clogging of the aeration pipe by periodically pressurizing and flushing it with clean water. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model, the accompanying drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are merely some exemplary embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the content of the exemplary embodiments of this utility model and these drawings without any creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of a membrane bioreactor in one embodiment of the present invention;

[0018] Figure 2 This is a schematic diagram of the treatment tank structure of this utility model;

[0019] Figure 3 This is a schematic diagram of the mounting bracket structure of this utility model;

[0020] Figure 4 This is a schematic diagram of the membrane fabric structure of this utility model;

[0021] Figure 5 This is a schematic diagram of the three-pronged tube structure of this utility model;

[0022] Figure 6 This is a schematic diagram of the aeration pipe structure of this utility model.

[0023] In the diagram: 1. Raw water tank; 2. Fine screen; 3. Inlet pipe; 4. Delivery pipe one; 5. Anoxic tank; 6. Baffle plate; 7. Treatment tank; 8. Delivery pipe two; 9. Impurity tank; 10. Mounting frame; 11. Membrane cloth; 12. Pumping pipe; 13. Centralized pipe; 14. Air supply pipe; 15. Three-way pipe; 16. Fixing plate; 17. Spray outlet; 18. Connection port; 19. Connecting pipe; 20. First aeration pipe; 21. Jet pipe; 22. Connecting air pipe; 23. Second aeration pipe; 24. Delivery pipe three; 25. Blower; 26. Water supply pipe. Detailed Implementation

[0024] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit its scope.

[0025] To keep the drawings concise, only the parts relevant to the utility model are shown schematically in each drawing; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of the components with the same structure or function is schematically shown, or only one is labeled. In this document, "a" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."

[0026] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0027] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0028] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of description and simplification of operation, 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 utility model.

[0029] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0030] like Figures 1-5As shown, it illustrates a membrane bioreactor in one embodiment of the present invention, comprising: a raw water tank 1, a treatment tank 7 installed in front of the raw water tank 1, an installation frame 10 fixedly installed inside the treatment tank 7, a membrane cloth 11 fixedly installed at the outer end of the installation frame 10, a water pumping pipe 12 fixedly connected to the upper right side of the membrane cloth 11, and a central pipe 13 fixedly installed on the right side of the water pumping pipe 12.

[0031] The gas supply pipe 14 is fixedly connected to the center inside the membrane 11, and a three-way pipe 15 is fixedly installed at the lower end of the gas supply pipe 14. Fixing plates 16 are fixedly installed on both sides of the three-way pipe 15. A nozzle 17 is fixedly installed at the upper end of the fixing plate 16. A connection port 18 is fixedly opened at the center above the gas supply pipe 14, and a connecting pipe 19 is fixedly connected to the upper end of the connection port 18.

[0032] For example, such as Figure 2 As shown, a fine screen 2 is installed at the upper end of the raw water tank 1, and an inlet pipe 3 is fixedly connected to the upper end of the fine screen 2. A conveying pipe 4 is fixedly installed at the front of the raw water tank 1, and an anoxic tank 5 is fixedly installed at the front end of the conveying pipe 4. A baffle 6 is fixedly installed inside the anoxic tank 5. A conveying pipe 8 is fixedly installed at the upper end of the treatment tank 7, and an impurity tank 9 is fixedly installed at the front end of the conveying pipe 8.

[0033] For example, such as Figure 3 As shown, mounting strips are fixedly installed on both sides of the upper end of the mounting frame 10, there are four membrane cloths 11, the air supply pipe 14 is in the shape of "Π", the two sides of the three-way pipe 15 are inclined downwards, the inside of the fixing plate 16 is hollow, and the two sides of the nozzle 17 are inclined outwards.

[0034] For example, such as Figure 5 As shown, the fixing plate 16 is symmetrically installed on both sides of the three-way pipe 15 with the three-way pipe 15 as the center reference, and the connecting pipe 19 is parallel to the installation position of the pumping pipe 12.

[0035] For example, such as Figure 2 As shown, a support frame is fixedly installed on the upper end of the inner wall of the raw water tank 1. The fine screen 2 is a detachable structure, and an insertion hole is fixedly opened on the upper end of the fine screen 2. The conveying pipe 4 is connected to the raw water tank 1 through the insertion hole, and the conveying pipe 4 connects the raw water tank 1 and the anoxic tank 5.

[0036] For example, such as Figure 2 As shown, the opening connects the anoxic pool 5 and the treatment pool 7. The second conveying pipe 8 has the same structure as the first conveying pipe 4, and the second conveying pipe 8 connects the treatment pool 7 and the impurity pool 9.

[0037] In some examples, wastewater enters the upper part of the raw water tank 1 through the inlet pipe 3. A fine screen 2 is installed at the upper part of the raw water tank 1 to intercept large impurities carried in the influent. After being filtered by the fine screen 2, the wastewater flows into the raw water tank 1. The pre-filtered wastewater is then transported from the raw water tank 1 to the anoxic tank 5 through the conveying pipe 4. The anoxic tank 5 and the treatment tank 7 are separated by a partition 6. Wastewater flows into the treatment tank 7 through an opening in the partition 6. Inside the treatment tank 7, multiple sets of membrane sheets 11 are fixedly installed on the mounting frame 10. Wastewater flows through the membrane sheets 11, undergoing deep treatment through their filtration function. The filtered clean water is collected through a pumping pipe 12 located at the upper part of the membrane sheets 11. The multiple pumping pipes 12 are connected to a central pipe 13. Starting the pumping pump... The filtered purified water is extracted from the system through the central pipe 13. The second conveying pipe 8 connects the treatment tank 7 and the impurity tank 9. Impurities at the bottom of the treatment tank 7 are discharged through the second conveying pipe 8. In order to reduce the accumulation of pollutants on the surface of the membrane cloth 11 (membrane fouling), a membrane cleaning device is set up. Gas is delivered to the Π-shaped gas delivery pipe 14 through the connecting pipe 19. The Π-shaped gas delivery pipe 14 is connected to the connecting pipe 19 through the connecting port 18. Multiple three-way pipes 15 are connected to the gas delivery pipe 14. Gas enters the fixed plate 16 through the three-way pipes 15. The fixed plate 16 is provided with multiple spray outlets 17. The spray outlets 17 have a structure that is inclined outward on both sides. High-pressure gas is sprayed onto the surface of the membrane cloth 11 through the spray outlets 17, which produces a scrubbing effect and effectively removes impurities attached to the membrane surface.

[0038] For example, such as Figure 5-6 As shown, this invention illustrates a membrane bioreactor in another embodiment, comprising a first aeration pipe 20 fixedly installed at the bottom of a membrane sheet 11, a jet pipe 21 fixedly installed at the upper end of the first aeration pipe 20, a connecting air pipe 22 fixedly connected to the left side of the first aeration pipe 20, a second aeration pipe 23 fixedly installed to the left side of the connecting air pipe 22, a conveying pipe 24 installed at the rear left side of the second aeration pipe 23, a blower 25 fixedly installed at the front end of the conveying pipe 24, and a water supply pipe 26 installed at the front left side of the second aeration pipe 23.

[0039] For example, such as Figure 6 As shown, the first aeration pipe 20 and the second aeration pipe 23 have the same structure. The jet pipe 21 is inverted cone shape with a larger diameter at the top and a smaller diameter at the bottom. The delivery pipe 24 and the water delivery pipe 26 are parallel to each other. The connecting air pipe 22 is symmetrically installed on both sides of the first aeration pipe 20 with the first aeration pipe 20 as the center reference.

[0040] In some examples, when wastewater enters treatment tank 7, blower 25 starts and generates gas. The gas is transported to the aeration system through conveying pipe 24. The aeration system consists of a first aeration pipe 20 and a second aeration pipe 23, which are connected by a connecting pipe 22. After wastewater enters treatment tank 7, gas is input into the tank through the aforementioned aeration pipes (first aeration pipe 20 and second aeration pipe 23). Its main purpose is to introduce oxygen into the wastewater, promote mixing, and accelerate the aerobic treatment process of biodegradation of pollutants. A jet pipe 21 is installed at the upper end of the aeration pipe (such as the first aeration pipe 20). As a gas release port, the jet pipe 21 is designed as an inverted cone (larger diameter at the top and smaller diameter at the bottom). This outward-expanding structure at the top helps to accumulate impurities that may clog the pipe opening in a wider area above the opening, reducing the risk of direct entry into the narrow nozzle. To further reduce clogging of the aeration pipes (first aeration pipe 20 and second aeration pipe 23), the device injects a mixture of compressed air and clean water into the aeration pipes through the water supply pipe 26. The high-pressure air-water mixture generates a strong scouring effect in the aeration pipes, which can effectively remove scale and internal deposits from the pipe walls and keep the pipes unobstructed.

[0041] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A membrane bioreactor, characterized in that, include: Raw water tank (1), a treatment tank (7) is installed in front of the raw water tank (1), an installation frame (10) is fixedly installed inside the treatment tank (7), a membrane cloth (11) is fixedly installed at the outer end of the installation frame (10), a water pumping pipe (12) is fixedly connected to the upper right side of the membrane cloth (11), and a central pipe (13) is fixedly installed on the right side of the water pumping pipe (12). Gas delivery pipe (14) is fixedly connected to the center inside the membrane cloth (11), and a three-way pipe (15) is fixedly installed at the lower end of the gas delivery pipe (14). Fixing plates (16) are fixedly installed on both sides of the three-way pipe (15). A nozzle (17) is fixedly installed at the upper end of the fixing plate (16). A connection port (18) is fixedly opened at the center above the gas delivery pipe (14). A connecting pipe (19) is fixedly connected at the upper end of the connection port (18).

2. A membrane bioreactor according to claim 1, characterized in that, The upper part of the raw water tank (1) is equipped with a fine screen (2), and the upper part of the fine screen (2) is fixedly connected to an inlet pipe (3). The front of the raw water tank (1) is fixedly installed with a first conveying pipe (4), and the front end of the first conveying pipe (4) is fixedly installed with an anoxic tank (5). The anoxic tank (5) is fixedly installed with a baffle (6). The upper part of the treatment tank (7) is fixedly installed with a second conveying pipe (8), and the front end of the second conveying pipe (8) is fixedly installed with an impurity tank (9).

3. A membrane bioreactor according to claim 1, characterized in that, The membrane (11) is fixedly installed with a first aeration pipe (20) at the bottom end, and a jet pipe (21) is fixedly installed at the upper end of the first aeration pipe (20). A connecting air pipe (22) is fixedly connected to the left side of the first aeration pipe (20). A second aeration pipe (23) is fixedly installed to the left side of the connecting air pipe (22). A conveying pipe (24) is installed behind the left side of the second aeration pipe (23), and a blower (25) is fixedly installed at the front end of the conveying pipe (24). A water supply pipe (26) is installed in front of the left side of the second aeration pipe (23).

4. A membrane bioreactor according to claim 3, characterized in that, The mounting bracket (10) has mounting strips fixedly installed on both sides of its upper end. There are four membrane cloths (11). The gas delivery pipe (14) is in the shape of a "Π". The two sides of the three-pronged pipe (15) are inclined downwards. The inside of the fixing plate (16) is hollow. The two sides of the nozzle (17) are inclined outwards.

5. A membrane bioreactor according to claim 1, characterized in that, The fixing plate (16) is symmetrically installed on both sides of the three-way pipe (15) with the three-way pipe (15) as the center reference, and the connecting pipe (19) is installed parallel to the pumping pipe (12).

6. A membrane bioreactor according to claim 2, characterized in that, The upper end of the inner wall of the raw water tank (1) is fixedly installed with a support frame. The fine screen (2) is a detachable structure, and the upper end of the fine screen (2) is fixedly provided with an insertion hole. The first conveying pipe (4) is connected to the raw water tank (1) through the insertion hole. The first conveying pipe (4) connects the raw water tank (1) and the anoxic tank (5).

7. A membrane bioreactor according to claim 2, characterized in that, The upper end of the partition (6) has an opening that connects the anoxic pool (5) and the treatment pool (7). The second conveying pipe (8) has the same structure as the first conveying pipe (4) and connects the treatment pool (7) and the impurity pool (9).

8. A membrane bioreactor according to claim 4, characterized in that, The first aeration pipe (20) and the second aeration pipe (23) have the same structure. The jet pipe (21) is inverted cone shape. The diameter of the jet pipe (21) is larger at the top and smaller at the bottom. The conveying pipe (24) and the water conveying pipe (26) are parallel to each other. The connecting air pipe (22) is symmetrically installed on both sides of the first aeration pipe (20) with the first aeration pipe (20) as the center reference.

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