MBBR (Moving Bed Biofilm Reactor) process filler intercepting device

Abstract

The utility model discloses an MBBR (Moving Bed Biofilm Reactor) process filler intercepting device, which relates to the technical field of sewage treatment, and comprises a collecting water tank arranged at the rear position in a concrete treatment pond body, an intercepting assembly is arranged at the front end of the collecting water tank, the intercepting assembly comprises a plurality of filter material intercepting barrel nets, and the filter material intercepting barrel nets are arranged in the collecting water tank through the intercepting assembly. The back flushing and garbage cleaning frequency is reduced, the phenomena of liquid level difference of front and rear units, pool overflowing and the like are effectively reduced, the probability that water passing holes in a filter material intercepting barrel net are blocked due to adhesion and accumulation of MBBR suspended filler is reduced, and the problems that strip-shaped or flocculent garbage is wound when the MBBR process filler intercepting device is used, the water passing section of a screen net is gradually reduced, and the service life of the filter net is prolonged are solved. The problems that the liquid level difference before and after the screen is obviously changed, filler extrusion is serious, even the filler is damaged and deformed, the damaged filler further blocks the screen, water in a biochemical pool cannot enter the next unit, and finally the phenomenon of pool overflowing is caused are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of sewage treatment, in particular to an MBBR process filler interception device. Background Art

[0002] MBBR filler is a microbial membrane carrier used in the MBBR process, which mainly provides a suitable growth environment for microorganisms. The MBBR process technology is to add suspended microbial membrane carriers in the activated sludge system. A large number of biofilms attached and grown on the suspended biofilm carriers greatly increase the active biomass in the biological pool. At the same time, due to the protective effect of the suspended biofilm carriers on microorganisms, the system's ability to resist shock loads is greatly improved. Since some MBBR processes use circular porous suspended fillers with a size of 25 mm, the suspended fillers are in a flowing circulation state in the aerobic zone. In order to prevent the suspended fillers from entering the next structure with the water flow and causing the loss of the fillers, a screen needs to be set in the suspended filler area of ​​the MBBR process to intercept the suspended fillers;

[0003] When the existing MBBR process filler interception device is in use, the traditional screen is a flat design, and its size is generally slightly larger than the water passage opening. With the push of the water flow, the suspended filler gathers and accumulates in front of the screen. In addition, due to the entanglement of some long strips or flocculent garbage, the water-passing section of the screen will gradually decrease, resulting in a significant change in the liquid level difference before and after the screen. The huge water pressure will cause the filler to be severely squeezed, or even damaged and deformed, and the damaged filler will further block the screen, resulting in the water in the biochemical pool being unable to enter the next unit, eventually leading to the occurrence of the pool bubbling phenomenon, and even causing the system to crash. In order to solve the above problems, some process equipment manufacturers have improved the screen, and improved the flat screen to a folded plate screen, which has increased the water-passing section of the screen to a certain extent, but still cannot solve the problems of screen blockage and filler accumulation and compression. Utility Model Content

[0004] The main purpose of the utility model is to provide a MBBR process filler interception device, which can effectively solve the problems in the background technology.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] An MBBR process filler interception device comprises a concrete treatment tank body, a collecting water tank is arranged at the rear position inside the concrete treatment tank body, and an interception component is arranged at the front end of the collecting water tank;

[0007] The interception assembly includes a plurality of filter material interception cylinder nets, and the rear end of the filter material interception cylinder nets is fixedly connected with a threaded connector, the front end of the collection water tank is provided with a plurality of water outlets matching the filter material interception cylinder nets, and the inner circle of the water outlet is provided with a threaded connection groove 1 matching the threaded connector, the filter material interception cylinder net is installed at the front end of the collection water tank through the threaded connector and the threaded connection groove 1, the front position of the filter material interception cylinder net is provided with a threaded connection groove 2 matching the threaded connection head, the filter material interception cylinder net and the plurality of vacant water outlets are threadedly connected with sealing plugs through the threaded connection groove 2 and the threaded connection groove 1 respectively.

[0008] As a further solution of the utility model, water inlet holes are provided on both sides and the bottom of the water collection tank, and a plurality of drainage holes are provided at one end of the water collection tank away from the water outlet.

[0009] As a further solution of the utility model, the filter interception cylinder net is evenly provided with water holes of 5-8 mm, and the opening rate is not less than 50%, and the total opening area of ​​the water holes is not less than twice the area of ​​the water outlet.

[0010] As a further solution of the utility model, a plurality of backwash water pipes matching the number of the filter material intercepting cylinder net are arranged through the top of the collecting water tank, and one end of the backwash water pipe extending into the collecting water tank is connected to a plurality of backwash perforated pipes through a water pipe connector. The backwash perforated pipes are located in the filter material intercepting cylinder net, and the number of the backwash perforated pipes matches the filter material intercepting cylinder net.

[0011] As a further solution of the utility model, the length of the single backwash perforated pipe matches the filter material interception cylinder net, and a metal plug is connected to one end of the backwash perforated pipe away from the backwash water pipe.

[0012] As a further solution of the utility model, the collection water tank and the filter material interception cylinder net are both made of stainless steel, the filter material interception cylinder net is cylindrical, and the backwash water pipe is "L" shaped.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] The utility model sets an interception component to cooperate with a collection water tank, and increases the filtration area by only connecting multiple filter material interception cylinder nets, so the filtration area is no longer limited by the size of the water outlet, and the greatly increased filtration area after adjustment can effectively extend the normal production working time of the device and reduce the frequency of backwashing and garbage cleaning;

[0015] The filter interception cylinder extends in the opposite direction of the sewage flow. Even if part of the MBBR suspended filler accumulates at the connection between the filter interception cylinder and the water outlet, it still does not affect the sewage inflow at the end of the filter interception cylinder away from the water outlet, effectively reducing the liquid level difference between the front and rear units and the occurrence of pool bubbling.

[0016] The filter media interception cylinder net is cylindrical in design. When the MBBR suspended filler contacts the outer ring of the filter media interception cylinder net, the contact area becomes smaller, which will produce a "column-wrapping effect" in which the filter media passes along the tangent line of the contact point and cannot adhere to the surface of the filter column, thus reducing the probability of MBBR suspended filler adhesion and accumulation leading to blockage of the water holes on the filter media interception cylinder net.

[0017] At the same time, due to the "column-wrapped effect", most of the garbage wrapped around the surface of the filter column can be cleaned up, so that it has a certain self-cleaning ability, and through the set backwash water pipe and water pipe connector, the filter material interception cylinder net can be backwashed regularly, further reducing the probability of filter hole clogging. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the overall structure of a filler interception device for MBBR process of the utility model;

[0019] Figure 2 This is a cross-sectional view of the internal structure of a collection water tank and a filter material interception cylinder net in the overall structure of an MBBR process filler interception device of the utility model;

[0020] Figure 3 This is a disassembled diagram of the filter material interception cylinder net and the collection water tank in the overall structure of an MBBR process filler interception device of the utility model;

[0021] Figure 4 It is a top view of the overall structure of an MBBR process filler interception device of the utility model.

[0022] In the figure: 1. Concrete treatment tank body; 2. Collection water tank; 3. Interception component; 4. Water inlet; 5. Filter material interception cylinder net; 6. Sealing plug; 7. Backwash water pipe; 8. Backwash perforated pipe; 9. Water pipe connector. DETAILED DESCRIPTION

[0023] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0024] like Figure 1-4 As shown, a filler interception device for MBBR process includes a concrete treatment tank body 1, a collecting water tank 2 is arranged at the rear position inside the concrete treatment tank body 1, and an interception component 3 is arranged at the front end of the collecting water tank 2;

[0025] The interception assembly 3 includes a plurality of filter material interception cylinder nets 5, and the rear end of the filter material interception cylinder nets 5 is fixedly connected with a threaded connector, the front end of the collecting water tank 2 is provided with a plurality of water outlets 4 that match the filter material interception cylinder nets 5, and the inner circle of the water outlet 4 is provided with a threaded connection groove 1 that matches the threaded connector, the filter material interception cylinder net 5 is installed at the front end of the collecting water tank 2 through the threaded connector and the threaded connection groove 1, and the front position of the filter material interception cylinder net 5 is provided with a threaded connection groove 2 that matches the threaded connection head, and the filter material interception cylinder net 5 and the plurality of vacant water outlets 4 are threadedly connected with sealing plugs 6 through the threaded connection groove 2 and the threaded connection groove 1 respectively.

[0026] In this embodiment, water inlet holes are provided on both sides and the bottom of the collecting water tank 2, and a plurality of drainage holes are provided at one end of the collecting water tank 2 away from the water outlet 4. The drainage holes facilitate the outflow of water collected in the collecting water tank 2, and the pumping delivery pipe is connected to the drainage hole according to the existing steps to facilitate the extraction of water from the collecting water tank 2.

[0027] In this embodiment, 5-8mm water holes are evenly opened on the filter material interception cylinder net 5, and the opening rate is not less than 50%. The total opening area of ​​the water holes is not less than twice the area of ​​the water outlet 4. Sewage can flow into the interior of the filter material interception cylinder net 5 through the water holes, and enter the collection water tank 2 through the filter material interception cylinder net 5. The MBBR suspended filler is intercepted by the filter material interception cylinder net 5. The filter material interception cylinder net 5 serves to separate the filter material from the mixed liquid to prevent it from flowing into the next treatment unit with the sewage.

[0028] In this embodiment, a plurality of backwashing water pipes 7 matching the number of the filter material intercepting cylinder net 5 are arranged through the top of the collecting water tank 2. One end of the backwashing water pipe 7 extending into the collecting water tank 2 is connected to a plurality of backwashing perforated pipes 8 through a water pipe connector 9. The backwashing perforated pipes 8 are located in the filter material intercepting cylinder net 5, and the number of the backwashing perforated pipes 8 matches the number of the filter material intercepting cylinder net 5. By connecting the backwashing water pipe 7 to an external flushing water pump and then turning on the water pump, the cleaning water flow is transported to the backwashing perforated pipes 8 and sprayed to the inside of the filter material intercepting cylinder net 5 through the backwashing perforated pipes 8, so as to facilitate the backwashing of the filter material intercepting cylinder net 5 from the inside to the outside, so as to flush out the impurities and dirt blocked in the water holes of the filter material intercepting cylinder net 5.

[0029] In this embodiment, the length of a single backwash perforated tube 8 matches the filter material intercepting cylinder net 5, and a metal plug is connected to the end of the backwash perforated tube 8 away from the backwash water pipe 7, which facilitates the assembly of multiple filter material intercepting cylinder nets 5 and the backwash perforated tube 8, thereby improving the flexibility of use.

[0030] In this embodiment, the collecting water tank 2 and the filter material intercepting cylinder net 5 are both made of stainless steel. The filter material intercepting cylinder net 5 is cylindrical. The backwashing water pipe 7 is "L"-shaped. The filter material intercepting cylinder net 5 is cylindrical. The area of ​​contact between the MBBR suspended filler and the cylinder net 5 becomes smaller, which will produce a "column-winding effect" in which the filter material passes along the tangent of the contact point and cannot adhere to the surface of the filter material intercepting cylinder net 5. A circulation around the filter material intercepting cylinder net 5 is formed through the "column-winding effect", which can drive the outer ring of the filter material intercepting cylinder net 5 to rub, making it easy to clean up most of the garbage wrapped around the surface of the filter material intercepting cylinder net 5, so that the filter material intercepting cylinder net 5 has a certain self-cleaning ability in the process of filtering sewage.

[0031] It should be noted that the utility model is a MBBR process filler interception device. When in use, firstly, the collecting water tank 2 is composed of a water-facing surface and a water-receiving surface, wherein a plurality of water inlets 4 are arranged on the water-facing surface, and filter material interception cylinder nets 5 are distributed and installed in the plurality of water inlets 4, and a drainage hole is reserved on the water-receiving surface of the collecting water tank 2;

[0032] After the mud-water mixture is discharged into the concrete treatment tank body 1, it flows into the interior of the filter material interception cylinder net 5 through the water holes opened on the filter material interception cylinder net 5, and enters the collection water tank 2 through the filter material interception cylinder net 5. After being collected by the collection water tank 2, it is discharged through the drainage hole and flows into the next unit; and during drainage, the MBBR suspended filler is intercepted by the filter material interception cylinder net 5, which serves to separate the filter material from the mixed liquid to prevent it from flowing into the next treatment unit with the sewage;

[0033] When the MBBR suspended filler contacts the outer ring of the filter material interception cylinder net 5, the contact area between them becomes smaller because the filter material interception cylinder net 5 is cylindrical, which will produce a "column-wrapped effect" in which the filter material passes along the tangent line of the contact point and cannot adhere to the surface of the filter material interception cylinder net 5, thereby reducing the probability of MBBR suspended filler accumulation leading to blockage of the water holes on the filter material interception cylinder net 5;

[0034] The column effect specifically refers to the phenomenon that pollutants rotate around the column with the water flow. This phenomenon is mainly due to the centrifugal force generated by the flow of water, forming a circulation around the column.

[0035] In the above, due to the "column-winding effect" after the filter material contacts the filter material interception cylinder net 5, the filter material will slide on the outer ring of the filter material interception cylinder net 5 with the fluctuation of the water surface, thereby constantly rubbing against the outer ring of the filter material interception cylinder net 5, making it easy to clean up most of the garbage wrapped around the surface of the filter material interception cylinder net 5, so that the filter material interception cylinder net 5 has a certain self-cleaning ability in the process of filtering sewage;

[0036] When in use, a backwashing water pipe 7 is provided through the top of the collecting water tank 2, and one end of the backwashing water pipe 7 extending into the collecting water tank 2 is connected to a backwashing perforated pipe 8, and the backwashing perforated pipe 8 is located inside the filter material intercepting cylinder net 5, so that after use, the backwashing water pipe 7 can be connected to an external flushing water pump, and then the water pump is turned on to transport the cleaning water flow to the backwashing perforated pipe 8, and then sprayed to the inside of the filter material intercepting cylinder net 5 through the backwashing perforated pipe 8, so as to backwash the filter material intercepting cylinder net 5 from the inside to the outside, so as to flush out the impurities and dirt blocked in the water holes of the filter material intercepting cylinder net 5;

[0037] At the same time, the filter material interception cylinder net 5 is connected to the threaded connection groove 1 on the water outlet 4 through a threaded connection head, and the other end of the filter material interception cylinder net 5 is provided with a threaded connection groove 2 that matches the threaded connection head, so that multiple filter material interception cylinder nets 5 can be connected to each other as needed, thereby extending the purpose. Because water flows through the water holes on the filter material interception cylinder net 5 into the filter material interception cylinder net 5, and is transported to the water outlet 4 through the filter material interception cylinder net 5, the purpose of increasing the filtration area is achieved, and the process of adjusting the filtration area will not be limited by the size of the water outlet 4, and it is easy to adjust according to needs;

[0038] And by increasing the filtration area, the number of filtration holes can be increased, thereby effectively extending the normal working time of the device, that is, the water holes on the filter material interception cylinder net 5 will be slowly blocked during use, but as the number increases, the blocking efficiency will be greatly reduced, which is convenient for reducing the frequency of backwashing and garbage cleaning;

[0039] A plurality of water outlets 4 are provided on the collecting water tank 2, and sealing plugs 6 are threadedly connected to the water outlets 4 and the filter material intercepting cylinder net 5. The sealing plugs 6 play a cutting role to prevent sewage from flowing through. Therefore, during use, a plurality of sealing plugs 6 can be removed as needed, and the filter material intercepting cylinder net 5 and the backwashing water pipe 7 and the backwashing perforated pipe 8 can be installed at the water outlets 4 from which the sealing plugs 6 are removed as needed to increase the number of filter material intercepting cylinder nets 5, which also plays a role in increasing the filtration area. Moreover, the various components are not arranged in an integrated manner and can be replaced separately after damage.

[0040] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A filler interception device for MBBR process, comprising a collection water tank (2) arranged at a rear position inside a concrete treatment tank body (1), characterized in that: The front end of the water collection tank (2) is provided with an interception assembly (3); the interception assembly (3) comprises a plurality of filter material interception cylinder nets (5), and the rear end of the filter material interception cylinder nets (5) is fixedly connected with a threaded connector; the front end of the water collection tank (2) is provided with a plurality of water outlets (4) matching the filter material interception cylinder nets (5), and the inner ring of the water outlets (4) is provided with a threaded connection groove 1 matching the threaded connector; the filter material interception cylinder net (5) is installed at the front end of the water collection tank (2) via the threaded connector and the threaded connection groove 1; the filter material interception cylinder net (5) is provided with a threaded connection groove 2 matching the threaded connection groove at the front position inside; the filter material interception cylinder net (5) and the plurality of vacant water outlets (4) are threadedly connected with sealing plugs (6) via the threaded connection groove 2 and the threaded connection groove 1, respectively.

2. A MBBR process filler interception device according to claim 1, characterized in that: Water inlet holes are provided on both sides and the bottom of the water collection tank (2), and a plurality of drainage holes are provided at one end of the water collection tank (2) away from the water outlet (4).

3. The MBBR process filler interception device according to claim 1, characterized in that: The filter material interception cylinder net (5) is evenly provided with water holes with a diameter of 5-8 mm, and the opening rate is not less than 50%, and the total opening area of ​​the water holes is not less than twice the area of ​​the water outlet (4).

4. The MBBR process filler interception device according to claim 1, characterized in that: A plurality of backwashing water pipes (7) are arranged through the top of the collection water tank (2), the number of which matches the number of the filter material interception cylinder net (5). One end of the backwashing water pipe (7) extending into the collection water tank (2) is connected to a plurality of backwashing perforated pipes (8) via a water pipe connector (9). The backwashing perforated pipes (8) are located in the filter material interception cylinder net (5), and the number of the backwashing perforated pipes matches the number of the filter material interception cylinder net (5).

5. A MBBR process filler interception device according to claim 4, characterized in that: The length of the single backwash perforated pipe (8) matches the filter material interception cylinder net (5), and a metal plug is connected to one end of the backwash perforated pipe (8) away from the backwash water pipe (7).

6. A MBBR process filler interception device according to claim 5, characterized in that: The collection water tank (2) and the filter material interception cylinder net (5) are both made of stainless steel. The filter material interception cylinder net (5) is cylindrical, and the backwash water pipe (7) is L-shaped.

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