MBBR (Moving Bed Biofilm Reactor) biological tank

Abstract

The utility model discloses an MBBR (Moving Bed Biofilm Reactor) biological tank which comprises a biological tank, a liquid inlet pipe, a breather pipe, an aeration pipe, a blow-off pipe, a feed port and an overflow port, two partition plates are arranged in the middle of the biological tank and divide the left side and the right side of the biological tank into two reaction cavities, and the tank bottom of the biological tank is of a contracted conical structure. A sewage pump is mounted at the tank bottom and is connected with the outside through a sewage discharge pipe, a contraction structure is formed at the bottom of each reaction cavity, a liquid inlet pipe and an overflow port are arranged on the side wall of each reaction cavity, a filter cover is arranged on the inner side of each overflow port in the corresponding reaction cavity, and an aeration pipe is arranged at the bottom of each reaction cavity. The aeration pipe is connected with a gas source through a breather pipe, and a filler is placed in the reaction cavity; according to the utility model, by arranging the partition plate with a special structure and the pool bottom, the mud deposition cavity is formed at the pool bottom, the influence of aeration in the reaction cavity on mud deposition is reduced, and mud deposits are finally discharged through the sewage pump and the sewage discharge pipe.

Description

Technical Field

[0001] The utility model relates to the technical field of sewage treatment pool structures, in particular to an MBBR biological pool. Background Art

[0002] MBBR biological pool, that is, moving bed biofilm reactor, is a highly efficient sewage treatment technology facility. In the MBBR biological pool, microorganisms attach and grow on the surface of carrier fillers to form a biofilm. These carrier fillers are constantly moving in the pool, allowing the biofilm to fully contact the sewage. The filler provides a large attachment surface area for microorganisms, which is conducive to the aggregation and growth of microorganisms. The organic matter and nutrients in the sewage diffuse into the biofilm and are used by the microorganisms for metabolism. Microorganisms obtain energy and nutrients by decomposing organic matter, thereby removing pollutants from the sewage. Existing MBBR biological pools are generally equipped with an aeration system. The air outlet of the aeration system is generally set at the bottom of the biological pool. The gas ejected by the aeration system easily affects the deposition of sludge, which is not conducive to the separation and cleaning of solid sludge. In response to the above problems, the present utility model provides a solution. Utility Model Content

[0003] The purpose of the utility model is to provide an MBBR biological pool.

[0004] The above technical objectives of the present invention are achieved through the following technical solutions:

[0005] A MBBR biological pond comprises a biological pond, a liquid inlet pipe, a vent pipe, an aeration pipe, a sewage pipe, a feed port and an overflow port. Two partitions are provided in the middle of the biological pond, which separate the left and right sides of the biological pond into two reaction chambers. The bottom of the biological pond is arranged in a contracted conical structure. The bottoms of the two reaction chambers are connected through the pond bottom. A sewage pump is installed on the bottom of the pond, and the sewage pump is connected to the outside through the sewage pipe. The bottoms of the two partitions are provided with folded plates bent toward the reaction chamber, forming a contraction structure at the bottom of the reaction chamber, which helps to deposit sludge. The side walls of each reaction chamber are provided with a liquid inlet pipe and an overflow port. The overflow port is provided on the upper side wall of the reaction chamber. The overflow port is located on the inner side of the reaction chamber and is provided with a filter cover. The aeration pipe is provided at the bottom of the reaction chamber and is connected to the air source through the vent pipe. Filler is placed in the reaction chamber.

[0006] Furthermore, a number of evenly distributed aeration branches are provided on both sides of the aeration pipe, and each aeration branch is provided with evenly distributed upward aeration holes. The gas ejected from the aeration holes and the rising air flow drive the filler to flip up and down in the pool, which can make the sewage and the filler move relatively quickly, increase the contact probability, and promote the renewal of the biofilm.

[0007] Furthermore, the sewage pipe passes through between the two partitions and passes through the top of the biological pool to the outside.

[0008] Furthermore, a filter is provided in the reaction chamber, above the filler and below the overflow port, and the filter can filter larger impurities in the filler and sewage.

[0009] Furthermore, the feed port is arranged at the top of the reaction chamber, and the ventilation pipe passes through the feed port and is connected to an external gas source. The gas source mainly includes an air pump and external air, which provides oxygen for the reaction in the biological pool.

[0010] In summary, the utility model has the following beneficial effects: the utility model forms a sludge deposition chamber at the bottom of the pool by setting a partition and a pool bottom with a special structure, thereby reducing the influence of aeration in the reaction chamber on sludge deposition, and the sludge sediment is finally discharged through the sewage pump and the sewage pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0012] Figure 2 It is a structural schematic diagram of the aeration pipe of the utility model.

[0013] In the figure, 1. biological pool; 2. reaction chamber; 3. pool bottom; 4. liquid inlet pipe; 5. ventilation pipe; 6. aeration pipe; 7. sewage pipe; 8. sewage pump; 9. filler; 10. filter screen; 11. feed port; 12. overflow port; 13. filter cover; 14. partition; 15. folding plate; 16. aeration branch pipe; 17. aeration hole. DETAILED DESCRIPTION

[0014] The following is a further detailed description of the present invention in conjunction with the accompanying drawings, clearly and completely describing the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0015] like Figure 1 and Figure 2As shown, an MBBR biological pool includes a biological pool 1, a liquid inlet pipe 4, a vent pipe 5, an aeration pipe 6, a sewage pipe 7, a feed port 11 and an overflow port 12. Two partitions 14 are provided in the middle of the biological pool 1. The two partitions 14 separate the left and right sides of the biological pool 1 into two reaction chambers 2. The bottom 3 of the biological pool 1 is set to a contracted cone structure. The bottoms of the two reaction chambers 2 are connected through the pool bottom 3. The pool bottom 13 is installed with a sewage pump 8, and the sewage pump 8 is connected to the outside through the sewage pipe 7. The bottom of the two partitions 14 is provided with a folded plate 15 bent toward the reaction chamber 2, forming a contraction structure at the bottom of the reaction chamber 2. The contraction structure helps to deposit mud and dirt. The side wall of each reaction chamber 2 is provided with a liquid inlet pipe 4 and an overflow port 12. The overflow port 12 is provided on the upper side wall of the reaction chamber 2. The overflow port 12 is located on the inner side of the reaction chamber 2 and is provided with a filter cover 13. The aeration pipe 6 is provided at the bottom of the reaction chamber 2. The aeration pipe 6 is connected to the air source through the vent pipe 5. The reaction chamber 2 is placed with a filler 9.

[0016] Further, such as Figure 2 As shown, a number of evenly distributed aeration branches 16 are provided on both sides of the aeration pipe 6, and each aeration branch 16 is provided with evenly distributed upward aeration holes 17. The gas ejected from the aeration holes 17 and the rising air flow drive the filler to flip up and down in the pool, which can make the sewage and the filler move relatively quickly, increase the contact probability, and promote the renewal of the biofilm.

[0017] Furthermore, the sewage pipe 7 passes through between the two partitions 14 and passes through the top of the biological pool 1 to the outside.

[0018] Furthermore, a filter screen 10 is provided in the reaction chamber 2 , above the filler 9 and below the overflow port 12 , and the filter screen 10 can filter larger impurities in the filler 9 and sewage.

[0019] Furthermore, the feed port 1 is set at the top of the reaction chamber 2, and the vent 5 passes through the feed port 11 and is connected to an external air source. The air source mainly includes an air pump and external air, which provides oxygen for the reaction in the biological pool 1.

[0020] Working principle: The utility model forms a sludge deposition chamber at the bottom of the pool by setting a partition and a pool bottom with a special structure, reducing the influence of aeration in the reaction chamber on sludge deposition. The sludge sediment is finally discharged through the sewage pump and the sewage pipe.

[0021] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed. However, as long as they are within the scope of the claims of the present invention, they are protected by patent law.

Claims

1. An MBBR bio-tank, comprising a bio-tank (1), a liquid inlet pipe (4), a vent pipe (5), an aeration pipe (6), a sewage discharge pipe (7), a feed port (11) and an overflow port (12), characterized in that: Two partitions (14) are provided in the middle of the biological pool (1), and the two partitions (14) separate the left and right sides of the biological pool (1) into two reaction chambers (2). The bottom (3) of the biological pool (1) is provided with a contracted conical structure, and the bottoms of the two reaction chambers (2) are connected through the bottom (3). A sewage pump (8) is installed on the bottom (3), and the sewage pump (8) is connected to the outside through a sewage pipe (7). The bottoms of the two partitions (14) are provided with a pipe bent toward the reaction chamber (2). A folding plate (15) forms a contraction structure at the bottom of the reaction chamber (2); the side wall of each reaction chamber (2) is provided with a liquid inlet pipe (4) and an overflow port (12); the overflow port (12) is provided on the upper side wall of the reaction chamber (2); the overflow port (12) is located on the inner side of the reaction chamber (2) and is provided with a filter cover (13); the aeration pipe (6) is provided at the bottom of the reaction chamber (2); the aeration pipe (6) is connected to the air source through the vent pipe (5); and a filler (9) is placed in the reaction chamber (2).

2. The MBBR bio-pond according to claim 1, characterized in that: A plurality of evenly distributed aeration branch pipes (16) are provided on both sides of the aeration pipe (6), and each aeration branch pipe (16) is provided with evenly distributed upward aeration holes (17).

3. The MBBR bio-pond according to claim 2, characterized in that: The sewage pipe (7) passes through between the two partitions (14) and passes through the top of the biological pool (1) to the outside.

4. The MBBR bio-pond according to claim 3, characterized in that: A filter screen (10) is provided in the reaction chamber (2), above the filler (9) and below the overflow port (12).

5. The MBBR bio-pond according to claim 4, characterized in that: The feed port (11) is arranged at the top of the reaction chamber (2), and the vent pipe (5) passes through the feed port (11) and is connected to an external gas source.

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