MBBR (Moving Bed Biofilm Reactor) filler interception net structure device

Abstract

The utility model discloses an MBBR (Moving Bed Biofilm Reactor) filler interception net structure device, which relates to the technical field of sewage treatment and comprises an interception net, a back flushing pipe transverse pipe, a plurality of back flushing pipe branch pipes, a steam stripping reflux pipe, a steam stripping reflux aeration pipe and an overflow port, a plurality of perforated aeration pipe branch pipes are horizontally arranged in the intercepting net, one ends of the perforated aeration pipe branch pipes are jointly connected with a perforated aeration pipe main pipe, the cylindrical design is adopted, the water passing cross section is larger, impact on the intercepting net is reduced, and suspended filler is not prone to being accumulated on the surface of the intercepting net; a plurality of back-blowing pipe branch pipes are used for back-blowing the suspended filler, a local turbulent flow form can be formed outside the cylindrical intercepting net during back-blowing, and the local turbulent flow form can be more beneficial to rushing away the suspended filler accumulated on the cylindrical intercepting net, so that the problem that the filler is accumulated on the surface of the intercepting net is effectively solved; the suspended filler can be effectively intercepted in the aeration tank, so that the interception effect is improved, and the smoothness of water flow is ensured.

Description

Technical Field

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

[0002] MBBR moving bed biofilm reactor is a new type of biofilm reactor that has received much attention in recent years. Its process and its improved process are to add suspended biofilm carriers into the activated sludge biochemical system to increase the growth space of microorganisms and increase the concentration of microorganisms in the pool, thereby improving the biochemical capacity, increasing the system's resistance to shock load, reducing pool capacity, saving space, etc.

[0003] With the need to upgrade or increase the capacity of sewage treatment plants in my country, MBBR is used for sewage treatment plant upgrading and transformation, especially for denitrification, which has a good effect. After the filler is added to the activated sludge reactor, a screen needs to be set in the filler pool to prevent the filler from flowing out of the filler pool.

[0004] The particle size of the commonly used MBBR fillers is relatively small. In order to improve the treatment effect of the MBBR fillers, the MBBR filler tank usually uses stirring or aeration to ensure full contact between the MBBR fillers and the sewage. This can easily cause the MBBR fillers to be lost with the water, resulting in pipe blockage or damage to subsequent electromechanical equipment such as water pumps. Therefore, the interception net for retaining the fillers plays an important role in the MBBR process.

[0005] However, the commonly used interception screens are mostly simple flat plate porous screens. The filler interception screens often cause the filler to accumulate on the screen. As the filler gradually accumulates, the load on the screen increases, and there will be problems such as the filler cannot be intercepted or the water flow is not smooth.

[0006] To this end, the utility model provides an MBBR filler interception net structure device. Utility Model Content

[0007] In view of the shortcomings of the existing technology, the utility model provides an MBBR filler interception net structure device, which solves the problems raised by the above background technology.

[0008] To achieve the above objectives, the present invention is implemented through the following technical solutions: an MBBR filler interception net structure device, comprising an interception net installed at the outlet of the aeration tank, a backflush pipe horizontal pipe is provided on the outside of the interception net, and a plurality of backflush pipe branches are installed at equal intervals at the bottom end of the backflush pipe horizontal pipe, each of the backflush pipe branches is provided with an air outlet;

[0009] A stripping reflux pipe is further provided on the front side of the interception net at the outside of the back-blowing pipe transverse pipe, a stripping reflux aeration pipe is horizontally provided inside the stripping reflux pipe, and an overflow port is opened in the middle of the upper surface of the interception net;

[0010] A plurality of perforated aeration pipe branches are horizontally arranged inside the interception net, and one end of the plurality of perforated aeration pipe branches is commonly connected to a perforated aeration pipe main pipe.

[0011] As a further technical solution of the present invention, one end of each of the plurality of perforated aeration pipe branches is connected to the perforated aeration pipe main pipe, and aeration holes are arranged on the upper surface of each of the perforated aeration pipe branches.

[0012] As a further technical solution of the present invention, the backblowing pipe branch is connected to the backblowing pipe horizontal pipe, one end of the backblowing pipe horizontal pipe is closed, and the other end of the backblowing pipe horizontal pipe is connected to an external blower through a pipeline. The blower blows air into the aeration tank through the air outlet on the backblowing pipe branch, and the air outlet direction of the air outlet is tangent to the outer surface of the interception net.

[0013] As a further technical solution of the present invention, a plurality of fixing connectors are arranged at equal intervals on the outer surface of the interception net, and the interception net is fixed to the wall of the aeration tank by the fixing connectors and bolts.

[0014] As a further technical solution of the present invention, a fixed cross bar is vertically welded to the front end of each fixed connector, and the stripping reflux pipe and the backflush pipe cross pipe are fixed to the fixed cross bar through pipe clamps.

[0015] As a further technical solution of the present invention, the interception net is a cylindrical structure, and water inlet holes are evenly opened on the outer surface of the interception net, and the aperture of the water inlet holes is smaller than the diameter of the suspended filler.

[0016] The utility model provides an MBBR filler interception net structure device, which has the following beneficial effects compared with the existing technology:

[0017] The MBBR filler interception net structure device designed in this invention has a simple structure and adopts a cylindrical design, which makes the water flow section larger and reduces the impact on the simple interception net, so that the suspended filler is not easy to accumulate on its surface, thereby reducing the load of the cylindrical interception net, reducing the possibility of the suspended filler not being intercepted or the water flow not being smooth, and improving practicality. Secondly, the suspended filler is backblown through a number of backblowing pipe branches, and a local turbulent flow form can be formed outside the cylindrical interception net during backblowing. This local turbulent flow form can be more conducive to flushing the suspended filler accumulated on the cylindrical interception net, effectively solving the problem of filler accumulation on the surface of the interception net, and can effectively intercept the suspended filler in the aeration tank, thereby improving the interception effect, ensuring the smooth flow of water, and improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a first-perspective view of an MBBR filler interception net structure device;

[0019] Figure 2 This is a second perspective view of an MBBR filler interception net structure device.

[0020] In the figure: 1. Intercepting net; 2. Perforated aeration pipe main pipe; 3. Stripping reflux aeration pipe; 4. Fixed connector; 5. Perforated aeration pipe branch pipe; 6. Overflow port; 7. Backflush pipe cross pipe; 71. Backflush pipe branch pipe; 8. Stripping reflux pipe; 9. Fixed cross bar. DETAILED DESCRIPTION

[0021] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0022] See also Figure 1-2 The utility model provides a technical solution for an MBBR filler interception net structure device: an MBBR filler interception net structure device, comprising an interception net 1 installed at the water outlet of the aeration tank, the interception net 1 being a cylindrical structure, and water inlet holes are evenly opened on the outer surface of the interception net 1, the aperture of the water inlet holes is smaller than the diameter of the suspended filler, a plurality of fixed connectors 4 are evenly spaced on the outer surface of the interception net 1, the interception net 1 is fixed to the wall of the aeration tank by the fixed connectors 4 and bolts, in addition, the upper end of the interception net 1 is higher than the water surface, and the bottom end is located in the aeration tank, the aperture of the water inlet hole of the interception net 1 is designed to be smaller than the diameter of the suspended filler, so as to prevent the suspended seasoning from entering the interception net 1 and avoid the loss of the suspended filler.

[0023] The front end of each fixed connector 4 is vertically welded with a fixed cross bar 9, and the stripping reflux pipe 8 and the back-blowing pipe cross pipe 7 are fixed to the fixed cross bar 9 by pipe clamps. The outside of the interception net 1 is provided with a back-blowing pipe cross pipe 7, and the bottom end of the back-blowing pipe cross pipe 7 is evenly spaced and equipped with a plurality of back-blowing pipe branches 71, each of which is provided with an air outlet. The back-blowing pipe branch 71 is connected to the back-blowing pipe cross pipe 7, one end of the back-blowing pipe cross pipe 7 is closed, and the other end of the back-blowing pipe cross pipe 7 is connected to the back-blowing pipe cross pipe 7. The pipeline is externally connected to a blower, which blows air into the aeration tank through the air outlet on the back-blowing pipe branch 71, and the air outlet direction of the air outlet is tangent to the outer surface of the interception net 1. The air blown through the air outlet on the back-blowing pipe branch 71 can blow the suspended filler accumulated on the interception net 1, thereby preventing the suspended filler from accumulating near the interception net 1. In addition, during the back-blowing process, a local turbulent flow is formed on the outer circular surface of the interception net 1, which is more conducive to flushing away the suspended filler accumulated on the interception net 1.

[0024] A stripping reflux pipe 8 is also provided on the front side of the interception net 1 at the outside of the back-blowing pipe horizontal pipe 7. A stripping reflux aeration pipe 3 is horizontally arranged in the stripping reflux pipe 8. By utilizing the coordinated use of the stripping reflux pipe 8 and the stripping reflux aeration pipe 3, the blower blows air through the air outlet on the back-blowing pipe branch 71, thereby generating power by aeration in the aeration tank, so as to achieve the effect of refluxing the filler around the interception net 1. An overflow port 6 is opened in the middle of the upper surface of the interception net 1, and the overflow port 6 can recover impurities or floating objects inside the interception net 1.

[0025] A plurality of perforated aeration pipe branches 5 are horizontally arranged inside the interception net 1, and one end of the plurality of perforated aeration pipe branches 5 is commonly connected to the perforated aeration pipe main pipe 2, and one end of the plurality of perforated aeration pipe branches 5 is connected to the perforated aeration pipe main pipe 2. Aeration holes are arranged on the upper surface of each perforated aeration pipe branch 5, and one end of the perforated aeration pipe main pipe 2 is also connected to a blower. The blower transports gas from the perforated aeration pipe main pipe 2 to each perforated aeration pipe branch 5, and then blows it out from the aeration holes on the perforated aeration pipe branch 5, which will further generate pneumatics in the interception net 1, thereby preventing suspended filler from accumulating outside the interception net 1.

[0026] The working principle of the utility model is as follows: during installation, a plurality of fixed connectors 4 are used to fix the interception net 1 on its surface, and then the interception net 1 is fixed in the aeration tank by bolts, and then the backflush pipe cross pipe 7 and the stripping return pipe 8 are fixed to the fixed cross bar 9 on the outside of the interception net 1 by using pipe clamps;

[0027] During operation, the blower delivers gas into the back-blowing pipe transverse pipe 7, and then blows air into the aeration tank through the air outlet holes on each back-blowing pipe branch 71. The air blown out through the air outlet holes on the back-blowing pipe branch 71 can blow the suspended filler accumulated on the interception net 1, thereby preventing the suspended filler from accumulating near the interception net 1. In addition, during the back-blowing process, a local turbulent flow is formed on the outer surface of the interception net 1, which is more conducive to flushing the suspended filler accumulated on the interception net 1.

[0028] In addition, by utilizing the coordinated use of the stripping reflux pipe 8 and the stripping reflux aeration pipe 3, the blower blows air through the air outlet on the backblowing pipe branch 71, thereby generating power by aerating the aeration tank, thereby achieving the effect of refluxing the filler around the interception net 1. It should be noted that during the operation, impurities or floating objects inside the interception net 1 can be discharged through the overflow port 6.

[0029] The above description is merely a preferred embodiment of the present invention. It should be noted that those skilled in the art may make various improvements and modifications without departing from the principles of the present invention, and such improvements and modifications should be considered within the scope of protection of the present invention. Structures, devices, and operating methods not specifically described or explained in this invention shall, unless otherwise specified or limited, be implemented in accordance with conventional means in the art.

Claims

1. An MBBR filler interception net structure device, comprising an interception net (1) installed at the outlet of an aeration tank, characterized in that: A back-blowing pipe transverse pipe (7) is provided on the outside of the intercepting net (1), and a plurality of back-blowing pipe branches (71) are installed at equal intervals at the bottom end of the back-blowing pipe transverse pipe (7), and each of the back-blowing pipe branches (71) is provided with an air outlet; A stripping reflux pipe (8) is further provided on the front side of the interception net (1) at the outer side of the back-blowing pipe transverse pipe (7), a stripping reflux aeration pipe (3) is horizontally provided in the stripping reflux pipe (8), and an overflow port (6) is provided in the middle of the upper surface of the interception net (1); A plurality of perforated aeration pipe branches (5) are horizontally arranged inside the interception net (1), and one end of the plurality of perforated aeration pipe branches (5) is commonly connected to a perforated aeration pipe main pipe (2).

2. The MBBR filler interception net structure device according to claim 1, characterized in that: One end of each of the plurality of perforated aeration pipe branches (5) is connected to the perforated aeration pipe main pipe (2), and an aeration hole is arranged on the upper surface of each of the perforated aeration pipe branches (5).

3. The MBBR filler interception net structure device according to claim 1, characterized in that: The back-blowing pipe branch pipe (71) is connected to the back-blowing pipe transverse pipe (7), one end of the back-blowing pipe transverse pipe (7) is closed, and the other end of the back-blowing pipe transverse pipe (7) is connected to an external blower through a pipeline, and the blower blows air into the aeration tank through the air outlet on the back-blowing pipe branch pipe (71), and the air outlet direction of the air outlet is tangent to the outer surface of the interception net (1).

4. The MBBR filler interception net structure device according to claim 1, characterized in that: The outer surface of the interception net (1) is provided with a plurality of fixed connectors (4) at equal intervals, and the interception net (1) is fixed to the aeration tank wall via the fixed connectors (4) and bolts.

5. The MBBR filler interception net structure device according to claim 4, characterized in that: A fixed cross bar (9) is vertically welded to the front end of each fixed connector (4), and the stripping reflux pipe (8) and the backwash pipe cross pipe (7) are fixed to the fixed cross bar (9) through pipe clamps.

6. The MBBR filler interception net structure device according to claim 1, characterized in that: The interception net (1) is a cylindrical structure, and water inlet holes are evenly opened on the outer surface of the interception net (1), and the aperture of the water inlet holes is smaller than the diameter of the suspended filler.

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