Novel efficient aeration MBR (Membrane Bioreactor) membrane box

Abstract

The utility model belongs to the technical field of aeration devices, and particularly relates to a novel efficient aeration MBR (Membrane Bioreactor) membrane box, which comprises a box body with an upper opening and a lower opening, a plurality of rows of MBR membranes are uniformly arranged in the box body, a lower aeration disc and an upper aeration disc are arranged below the MBR membranes, the upper aeration disc comprises a plurality of upper aeration pipes parallel to the MBR membranes, and a plurality of lower aeration pipes parallel to the MBR membranes are arranged in the box body. Each upper aeration pipe is provided with two rows of upper aeration holes, and the two rows of upper aeration holes are respectively positioned on the left side and the right side of the axis of the upper aeration pipe and respectively face the adjacent MBR membrane at an inclined angle of 45 degrees. According to the utility model, the upper aeration disc and the MBR membrane are spatially arranged in parallel, air flow is sprayed out from the upper aeration pipe and then is obliquely upwards sprayed out at 45 degrees, and due to the existence of resistance of sewage and the MBR membrane, the aeration air flow can move upwards along the MBR membrane, so that the contact area of the MBR membrane and air is increased, the surface of the MBR membrane is flushed by the air flow, the contact time of sludge and the MBR membrane is shortened, and the aeration efficiency is improved. The adhesion of sludge on the surface of the MBR membrane is reduced, and the aeration efficiency of the MBR membrane box is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of aeration devices, and in particular relates to a novel high-efficiency aeration MBR membrane box. Background Art

[0002] MBR membrane is the main solid-liquid separation equipment in the sewage biochemical treatment system, and the normal operation of MBR membrane requires the use of MBR membrane box. The structure of MBR membrane box and the aeration volume of membrane box are one of the main factors affecting the safe and stable operation of MBR membrane. The structure of MBR membrane box determines the installation and operation mode of MBR membrane. Since the aeration device and water production device of MBR are integrated in the membrane box, the membrane box structure used by different MBR membrane specifications is different. The size of MBR membrane used in Tianji Group 6300# biochemical treatment system is 2000*700*2130mm.

[0003] Due to the single aeration structure in the existing MBR membrane box, the aeration efficiency of the MBR membrane is low during the mud-water separation process of the biochemical system. A large amount of sludge is attached to the surface of the MBR membrane, which seriously affects the water production of the MBR membrane, restricts the production capacity of the 6300# biochemical system, and seriously affects the process balance of the biochemical system. Utility Model Content

[0004] The utility model provides a novel high-efficiency aeration MBR membrane box in view of the above problems.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A novel high-efficiency aerated MBR membrane box, comprising a box body with openings at the top and the bottom, two guide plates are fixedly welded on the left and right sides of the box body, the two guide plates form a guide groove, the box body is clamped between two guide columns in the MBR membrane pool through the guide groove, a leg is arranged at the lower end of the box body for supporting the box body, a plurality of rows of MBR membranes are evenly arranged in the box body, a water collecting pipe bundle is arranged at the upper and lower ends of the MBR membrane, the water collecting pipe bundle is installed on a U-shaped steel, the U-shaped steel is connected to the channel steel by bolts, the channel steel is fixed on the inner wall of the box body, a lower aeration plate and an upper aeration plate are arranged below the MBR membrane, and the upper aeration plate is located above the lower aeration plate, and the lower aeration plate is located above the lower aeration plate. The air plate and the upper aeration plate are both fixedly connected to the box body, the lower aeration plate is composed of a plurality of lower aeration tubes arranged perpendicularly to the MBR membrane, the aperture of the lower aeration hole on the lower aeration tube is 10 mm, the upper aeration plate includes a plurality of upper aeration tubes arranged parallel to the MBR membrane, and an upper aeration tube is arranged between the side wall of the box body and the adjacent MBR membrane and between two adjacent MBR membranes, two aeration branches are commonly connected at both ends of the plurality of upper aeration tubes, the aperture of the upper aeration hole on the upper aeration tube is 4 mm, and two rows of upper aeration holes are arranged on each of the upper aeration tubes, the two rows of upper aeration holes are respectively located on the left and right sides of the axis of the upper aeration tube, and are respectively arranged toward the adjacent MBR membrane at an inclination angle of 45°.

[0007] Furthermore, an anti-rotation component is provided at one end of the water collecting tube bundle, and the two anti-rotation components on the same MBR membrane are diagonally arranged. The anti-rotation component includes two anti-rotation baffles arranged opposite to each other, and the two anti-rotation baffles are fixedly connected to the inner wall of the box body, and the two anti-rotation baffles are respectively located on both sides of the water collecting tube bundle, and the two anti-rotation baffles are connected by bolts to achieve clamping of the water collecting tube bundle.

[0008] Furthermore, the U-shaped steel is located above the channel steel to achieve supported installation of the MBR membrane.

[0009] Furthermore, a reinforcing limit frame is arranged in the guide groove to reduce the gap between the guide groove and the guide column, thereby ensuring the verticality of the MBR membrane box during hoisting.

[0010] Compared with the prior art, the utility model has the following advantages:

[0011] The utility model improves the aeration plate, and sets an upper aeration plate and a lower aeration plate respectively. The upper aeration plate and the MBR membrane are arranged in parallel in space, and the upper aeration pipe is installed between the side wall of the box body and the adjacent MBR membrane or between two adjacent MBR membranes. After the airflow is sprayed out from the upper aeration pipe, it sprays upward at a 45-degree angle. Due to the resistance of sewage and MBR membrane, the aeration airflow moves upward along the MBR membrane. Such a layout increases the contact area between the MBR membrane and the air, and the airflow washes the surface of the MBR membrane, reducing the contact between the sludge and the MBR membrane. The contact time is reduced, the adhesion of sludge on the surface of MBR membrane is reduced, and the aeration efficiency of MBR membrane box is improved; the lower aeration plate and MBR membrane are arranged vertically in space, and the aperture of the lower aeration hole is 10mm, the aeration volume is large, and the volume of gas increases during the movement of gas from the bottom to the top in sewage, the airflow squeezes the MBR membrane, and the membrane wires in the MBR membrane swing greatly. Such a layout increases the shaking amplitude of the MBR membrane wires, accelerates the shedding of sludge attached to the MBR membrane, reduces the fouling problem of the MBR membrane, and improves the aeration efficiency of the MBR membrane;

[0012] The utility model is designed taking into account that there is more sludge at the bottom of the biochemical membrane pool. In order to prevent the aeration holes on the aeration plate from being blocked and improve the aeration efficiency, the upper aeration holes on the upper aeration plate and the lower aeration holes on the lower aeration plate of the utility model respectively adopt two different aeration apertures of φ4mm and φ10mm. The lower aeration holes with large apertures are mainly used to achieve the shaking of the MBR membrane wires, the drainage and sludge discharge of the membrane box, and the blowing away of the sludge around the membrane box to prevent the lower aeration holes from being blocked and the MBR membrane from being blocked. The upper aeration holes with small apertures are mainly used for the surface of the MBR membrane wires. Air washing vibration reduces the sludge attached to the membrane surface; large aeration holes with non-inclined vertical aeration can blow away the sludge in the membrane box to prevent the sludge from clogging the MBR membrane. At the same time, when the MBR membrane box stops aeration abnormally, a large amount of sewage enters the MBR membrane box, and the sludge in the sewage will settle in the lower aeration plate. This design can effectively prevent the sludge from clogging the upper aeration holes of the upper aeration plate; when the aeration of the MBR membrane box is restored, the large-diameter lower aeration holes on the lower aeration plate can quickly discharge the sewage in the membrane box, so that the aeration of the membrane box returns to normal;

[0013] Once the MBR membrane is aerated well, due to the flushing effect of the airflow on the MBR membrane, the MBR membrane is rotated slightly with the water collecting tube bundle at the top as the axis. Since the water collecting tube bundle and the fixed end cap are sealed with O-rings, the slight rotation will accelerate the wear of the O-ring and the water collecting tube bundle. In severe cases, the MBR membrane will not be sealed tightly, causing muddy water to enter the MBR membrane, resulting in an increase in the turbidity of the system's produced water and unqualified produced water. The utility model is provided with an anti-rotation baffle, which is connected by bolts. The anti-rotation baffle is used to clamp the water collecting tube bundle to prevent the MBR membrane from rotating due to aeration, causing the water collecting tube bundle to wear, and then causing leakage or even scrapping, thereby extending the service life of the water collecting tube bundle and contributing to the cost reduction and efficiency improvement of the enterprise.

[0014] The utility model greatly improves the aeration effect of the MBR membrane, reduces the sludge content attached to the MBR membrane, reduces the blockage of the MBR membrane, prolongs the operation cycle of the MBR membrane, reduces the cleaning frequency of the MBR membrane, and reduces the use of chemical agents. At the same time, the design of the anti-rotation baffle reduces the wear of the MBR membrane to a minimum, greatly improves the service life of the water collection tube bundle and the sealing ring O-ring of the MBR membrane, and prolongs the service life of the MBR membrane by 25%, improves the water production of the entire biochemical system, and maintains the balance and stability of the large water network system;

[0015] The utility model changes the fixing mode of the MBR membrane from the original hanging type to a supporting cantilever beam design, which can better overcome the wear and even damage of the MBR membrane caused by its own weight during operation, and fully maintain the stability and safety of the MBR membrane operation;

[0016] The utility model provides a reinforced limit frame to ensure that when the MBR membrane box is hoisted into the MBR membrane pool, the verticality deviation between the box body and the pool ground can be kept within 5 degrees. Excessive hoisting and placement deviation will affect the aeration effect of the MBR membrane, thereby preventing the poor aeration effect of the MBR membrane caused by the deviation of the box body hoisting and placement. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 To improve the side view of the previous MBR membrane box;

[0018] Figure 2 To improve the front view of the previous MBR membrane box;

[0019] Figure 3 To improve the top view of the previous MBR membrane box;

[0020] Figure 4 To improve the structural diagram of the previous aeration plate;

[0021] Figure 5 for Figure 1A partial enlarged view of the middle circle A;

[0022] Figure 6 It is a side view of the utility model;

[0023] Figure 7 It is the front view of the utility model;

[0024] Figure 8 It is a top view of the utility model;

[0025] Fig. 9 This is a schematic diagram of the structure of the lower aeration plate in the utility model;

[0026] Fig.10 This is a schematic diagram of the structure of the upper aeration plate in the utility model;

[0027] Fig.11 For this utility model Figure 6 A partial enlarged view of the middle circle B;

[0028] Fig.12 For this utility model Figure 7 A partial enlarged view of the middle circle C;

[0029] In the figure, box body 1, guide plate 2, guide groove 3, guide column 4, support leg 5, MBR membrane 6, water collecting tube bundle 7, U-shaped steel 8, channel steel 9, lower aeration pipe 10, lower aeration hole 11, upper aeration pipe 12, aeration branch pipe 13, upper aeration hole 14, anti-rotation baffle 15, and reinforced limit frame 16. DETAILED DESCRIPTION

[0030] In order to further illustrate the technical solution of the present invention, the present invention is further described below through embodiments.

[0031] like Figures 6 to 12As shown, a novel high-efficiency aeration MBR membrane box includes a box body 1 with openings at the top and bottom, two guide plates 2 are fixedly welded on the left and right sides of the box body 1, the two guide plates 2 form a guide groove 3, and a reinforcing limit frame 16 is arranged in the guide groove 3 to reduce the gap between the guide groove 3 and the guide column 4, thereby ensuring the verticality of the MBR membrane 6 box when hoisting, the box body 1 is clamped between the two guide columns 4 in the MBR membrane 6 pool through the guide groove 3, and a leg 5 is arranged at the lower end of the box body 1 for supporting the box body 1, and multiple rows of MBR membranes 6 are evenly arranged in the box body 1, and water collecting pipe bundles 7 are arranged at the upper and lower ends of the MBR membrane 6, and the water collecting pipe bundles 7 are installed on U-shaped steel 8, and the U-shaped steel 8 is connected to the channel steel 9 by bolts, and the channel steel 9 is fixed on the inner wall of the box body 1, and the U-shaped steel 8 is located above the channel steel 9 to realize the supported installation of the MBR membrane 6, A lower aeration plate and an upper aeration plate are arranged below the MBR membrane 6, and the upper aeration plate is located above the lower aeration plate. The lower aeration plate and the upper aeration plate are both fixedly connected to the box body 1. The lower aeration plate is composed of a plurality of lower aeration pipes 10 arranged vertically with the MBR membrane 6. The aperture of the lower aeration hole 11 on the lower aeration pipe 10 is 10 mm. The upper aeration plate includes a plurality of upper aeration pipes 12 arranged parallel to the MBR membrane 6, and the upper aeration plate is connected to the adjacent MBR membrane on the side wall of the box body 1. 6 and between two adjacent MBR membranes 6, and two aeration branches 13 are commonly connected at both ends of the multiple upper aeration pipes 12. The aperture of the upper aeration holes 14 on the upper aeration pipes 12 is 4 mm. Each of the upper aeration pipes 12 is provided with two rows of upper aeration holes 14, and the two rows of upper aeration holes 14 are respectively located on the left and right sides of the axis of the upper aeration pipe 12, and are respectively arranged toward the adjacent MBR membranes 6 at an inclination angle of 45°.

[0032] An anti-rotation component is provided at one end of the water collecting tube bundle 7, and the two anti-rotation components on the same MBR membrane 6 are diagonally arranged. The anti-rotation component includes two anti-rotation baffles 15 which are arranged opposite to each other. The two anti-rotation baffles 15 are fixedly connected to the inner wall of the box body 1, and the two anti-rotation baffles 15 are respectively located on both sides of the water collecting tube bundle 7. The two anti-rotation baffles 15 are connected by bolts to achieve clamping of the water collecting tube bundle 7.

[0033] The utility model improves the aeration efficiency of the MBR membrane, reduces the amount of sludge attached to the MBR membrane, and prolongs the operation period of the MBR membrane from the original 6 months to the current 9 months, greatly improving the water production of the MBR membrane. The average water production is increased from 480m 3 / h increased to the current 560m 3 / h, the annual production capacity of the biochemical system was increased by 700,000 cubic meters, ensuring the safe and stable operation of the biochemical treatment system, extending the service life of the MBR membrane, and reducing the frequency of chemical cleaning of the MBR membrane. At the same time, due to the reduction in the frequency of chemical cleaning, the use of chemical agents has been reduced from the original 8T to the current 5.2T; since the wear problem of the MBR membrane has been effectively solved fundamentally, the replacement volume of the MBR membrane has also been reduced from the original 12-15 pieces per year to the current 0 piece, reducing the purchase volume of spare parts, solving the problems of serious fouling of the MBR membrane and wear and tear of the water collection pipe bundle leaking into muddy water, and achieving the goal of reducing costs and increasing efficiency for the enterprise.

[0034] The above shows and describes the main features and advantages of the utility model. For those skilled in the art, it is obvious that the utility model is not limited to the details of the above exemplary embodiments, and the utility model can be implemented in other specific forms without departing from the spirit or basic features of the utility model. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the utility model is limited by the attached claims rather than the above description, and it is intended to include all changes that fall within the meaning and scope of the equivalent elements of the claims in the utility model.

[0035] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A novel high-efficiency aerated MBR membrane box, comprising a box body (1) with openings at the top and bottom, two guide plates (2) fixedly welded on the left and right sides of the box body (1), the two guide plates (2) forming a guide groove (3), the box body (1) being clamped between two guide columns (4) in the MBR membrane (6) pool through the guide groove (3), a leg (5) being arranged at the lower end of the box body (1) for supporting the box body (1), a plurality of rows of MBR membranes (6) being evenly arranged in the box body (1), a water collecting pipe bundle (7) being arranged at the upper and lower ends of the MBR membrane (6), the water collecting pipe bundle (7) being installed on a U-shaped steel (8), the U-shaped steel (8) being connected to a channel steel (9) by bolts, the channel steel (9) being fixed on the inner wall of the box body (1), characterized in that: A lower aeration plate and an upper aeration plate are arranged below the MBR membrane (6), and the upper aeration plate is located above the lower aeration plate. The lower aeration plate and the upper aeration plate are both fixedly connected to the housing (1). The lower aeration plate is composed of a plurality of lower aeration pipes (10) arranged vertically with the MBR membrane (6), and the aperture of the lower aeration hole (11) on the lower aeration pipe (10) is 10 mm. The upper aeration plate includes a plurality of upper aeration pipes (12) arranged parallel to the MBR membrane (6), and the upper aeration plate is connected to the adjacent MBR membrane (6) on the side wall of the housing (1). An upper aeration pipe (12) is arranged between two adjacent MBR membranes (6), and two aeration branches (13) are commonly connected at both ends of the plurality of upper aeration pipes (12). The aperture of the upper aeration holes (14) on the upper aeration pipes (12) is 4 mm. Two rows of upper aeration holes (14) are arranged on each of the upper aeration pipes (12). The two rows of upper aeration holes (14) are respectively located on the left and right sides of the axis of the upper aeration pipe (12), and are respectively arranged at an inclination angle of 45° toward the adjacent MBR membranes (6).

2. A novel high-efficiency aeration MBR membrane box according to claim 1, characterized in that: An anti-rotation component is arranged at one end of the water collecting tube bundle (7), and the two anti-rotation components on the same MBR membrane (6) are arranged diagonally. The anti-rotation component includes two anti-rotation baffles (15) arranged opposite to each other, and the two anti-rotation baffles (15) are fixedly connected to the inner wall of the box body (1), and the two anti-rotation baffles (15) are respectively located on both sides of the water collecting tube bundle (7), and the two anti-rotation baffles (15) are connected by bolts to achieve clamping of the water collecting tube bundle (7).

3. A novel high-efficiency aeration MBR membrane box according to claim 1, characterized in that: The U-shaped steel (8) is located above the channel steel (9) to achieve a supported installation of the MBR membrane (6).

4. A novel high-efficiency aeration MBR membrane box according to claim 1, characterized in that: A reinforcing limit frame (16) is arranged in the guide groove (3) so as to reduce the gap between the guide groove (3) and the guide column (4), thereby ensuring the verticality of the MBR membrane (6) box when it is hoisted.

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