Anaerobic ammonia oxidation bacteria reactor

Abstract

The application provides an anaerobic ammonia oxidation bacteria reactor and relates to the technical field of denitrification process equipment, and comprises a reactor structure, a top cover structure, an exhaust structure and a multistage stirring structure, wherein the top cover structure is arranged on the top of the reactor structure; the multistage stirring structure is connected with the top cover structure and at least partially extends into the reactor structure, and the multistage stirring structure is used for stirring the material at the top end of the reactor structure step by step; and the exhaust structure is communicated with the top cover structure and is used for exhausting the gas in the top cover structure. The application alleviates the technical problem that the bacteria bodies float up due to the internal gas in the existing reactor during initial start.

Description

Technical Field

[0001] This invention relates to the technical field of denitrification process equipment, and in particular to an anaerobic ammonia-oxidizing bacteria reactor. Background Technology

[0002] The fully autotrophic nitrogen removal process is a novel nitrogen removal technology for treating wastewater with high ammonia nitrogen and low C / N ratio. This process uses nitrifying bacteria and anaerobic ammonia-oxidizing bacteria as the core functional bacterial groups. Through aerobic short-cut nitrification and anaerobic ammonia oxidation, it directly converts ammonia nitrogen in the water into nitrogen gas for emission. The total nitrogen removal rate can reach over 80%, and it has many advantages such as low investment, low operating costs, and no secondary pollution. The two-stage anaerobic ammonia oxidation reaction separates the reactors for nitrifying bacteria and anaerobic ammonia-oxidizing bacteria, allowing each to operate independently and control the conditions required by each reactor.

[0003] However, existing reactors are all converted from anaerobic reactors such as UASB or IC. The formation of granular sludge requires a certain upward flow velocity to ensure stable operation. However, during the initial start-up, floating bacteria are inevitable. The floating of these bacteria is mostly due to the buoyancy of gases trapped within them. Therefore, it is necessary to effectively treat the floating bacteria. Summary of the Invention

[0004] The purpose of this invention is to provide an anaerobic ammonia-oxidizing bacteria reactor to alleviate the technical problem in the prior art where bacteria float to the surface due to the action of internal gases during the initial start-up of the reactor.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] This invention provides an anaerobic ammonia-oxidizing bacteria reactor, comprising a reactor structure, a top cover structure, an exhaust structure, and a multi-stage stirring structure, wherein the top cover structure is provided on the top of the reactor structure;

[0007] The multi-stage stirring structure is connected to the top cover structure, and the multi-stage stirring structure extends at least partially into the reactor structure. The multi-stage stirring structure is used to stir the material at the top of the reactor structure step by step.

[0008] The exhaust structure is connected to the top cover structure and is used to exhaust the gas inside the top cover structure.

[0009] In an optional embodiment of the present invention, the multi-stage stirring structure includes a driving component, a stirring shaft, and a stirring blade mechanism. The driving component is connected to the top cover structure, and the driving component is connected to the stirring blade mechanism through the stirring shaft.

[0010] The stirring blade mechanism is located within the reactor structure, and the stirring blade mechanism is used to stir the material at the top of the reactor structure in stages.

[0011] Furthermore, the stirring blade mechanism includes a first stirring blade and a plurality of second stirring blades. The first stirring blade and the plurality of second stirring blades are sequentially arranged on the stirring shaft along the material outward discharge direction within the reactor structure. The first stirring blade is used to stir and lift the material within the reactor structure.

[0012] Furthermore, the distance between the plurality of second stirring blades is less than the distance between the bottommost second stirring blade and the first stirring blade.

[0013] In an optional embodiment of the present invention, the reactor structure includes a lower reactor body and an upper reactor body, wherein the top of the lower reactor body is connected to the upper reactor body;

[0014] The upper reactor body is covered by the top cover structure, and a material sedimentation space is formed between the upper reactor body and the top cover structure. The upper reactor body is provided with a reflux port, which is used to connect the bottom end of the material sedimentation space with the interior of the upper reactor body.

[0015] The first stirring blade and multiple second stirring blades are all located inside the upper reactor body.

[0016] In an optional embodiment of the present invention, the exhaust structure includes an exhaust pipe, one end of which extends into the top cover structure and the other end of which communicates with the outside of the top cover structure.

[0017] Furthermore, the exhaust structure also includes a gas collection hood located within the top cover structure, the gas collection hood being disposed on the top of the upper reactor body;

[0018] One end of the exhaust pipe that extends into the top cover structure is connected to the gas collection cover.

[0019] In an optional embodiment of the present invention, a water supply mechanism is connected to the bottom of the reverse reactor body 11.

[0020] Furthermore, the water supply mechanism includes a vortex distributor, the discharge end of which is connected to the interior of the lower reactor body, and the feed end of which is used to connect to an external feeding device.

[0021] Furthermore, the water supply mechanism also includes a water distributor bracket, which is located inside the lower reactor body and is connected to the vortex water distributor.

[0022] The present invention can achieve the following beneficial effects:

[0023] This invention provides an anaerobic ammonia-oxidizing bacteria reactor, comprising a reactor structure, a top cover structure, an exhaust structure, and a multi-stage stirring structure. The top cover structure is located at the discharge end of the reactor, and the top of the reactor structure is covered by the top cover structure. The multi-stage stirring structure is connected to the top cover structure, and at least partially extends into the reactor structure. The multi-stage stirring structure is used to stir the material at the top of the reactor structure stage by stage. The exhaust structure is connected to the top cover structure and is used to discharge the gas inside the top cover structure.

[0024] In this invention, the top of the reactor structure is its discharge end, and a top cover structure is fitted on top of it, that is, the top cover structure covers the discharge end of the top of the reactor structure; the top cover structure is provided with a multi-stage stirring structure, part of the multi-stage stirring structure extends into the reactor structure and stirs the material at the top of the reactor structure. During the stirring process, the floating bacteria on the material are fully degassed, and the gas is discharged to the outside of the top cover structure through the exhaust structure.

[0025] Compared with the prior art, the multi-stage stirring structure of the present invention deaerated the floating bacteria that rise with the material through thorough stirring. After deaeration, the floating bacteria lose their ability to float on top of the material and return to the material.

[0026] This invention at least alleviates the technical problem in the prior art where bacteria float to the surface due to the action of internal gases during the initial start-up of the reactor. Attached Figure Description

[0027] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0028] Figure 1 This is a front view schematic diagram of the internal structure of the anaerobic ammonia-oxidizing bacteria reactor provided in an embodiment of the present invention.

[0029] Icons: 1-Reactor structure; 11-Lower reactor body; 12-Upper reactor body; 121-Return port; 13-Water supply mechanism; 131-Swirl distributor; 132-Distributor support; 2-Top cover structure; 21-Top cover body; 22-Outlet weir; 3-Exhaust structure; 31-Exhaust pipe; 32-Gas collection hood; 4-Multi-stage stirring structure; 41-Drive component; 42-Stirring shaft; 43-Second stirring blade; 44-First stirring blade. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0031] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0032] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0033] In the description of this invention, it should be noted that the terms "upper," "lower," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this invention is in use. They are only for the convenience of describing this invention and simplifying the description, 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, and therefore should not be construed as a limitation of this invention. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0034] Furthermore, terms such as "horizontal" and "vertical" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0035] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," and "connect" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0036] The following detailed description of some embodiments of the present invention is provided in conjunction with the accompanying drawings. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0037] Example

[0038] This embodiment provides an anaerobic ammonia-oxidizing bacteria reactor, referring to... Figure 1 The anaerobic ammonia-oxidizing bacteria reactor includes a reactor structure 1, a top cover structure 2, an exhaust structure 3, and a multi-stage stirring structure 4. The top cover structure 2 covers the top of the reactor structure 1. The multi-stage stirring structure 4 is connected to the top cover structure 2 and extends at least partially into the reactor structure 1. The multi-stage stirring structure 4 is used to stir the material at the top of the reactor structure 1 step by step. The exhaust structure 3 is connected to the top cover structure 2 and is used to exhaust the gas inside the top cover structure 2.

[0039] The embodiments of the present invention at least alleviate the technical problem in the prior art where bacteria float to the surface due to the action of internal gases during the initial start-up of the reactor.

[0040] In this embodiment of the invention, the top of the reactor structure 1 is its discharge end, and a top cover structure 2 is fitted on its top, that is, the top cover structure 2 covers the discharge end of the top of the reactor structure 1; the top cover structure 2 is provided with a multi-stage stirring structure 4, part of the multi-stage stirring structure 4 extends into the reactor structure 1 and stirs the material at the top of the reactor structure 1. During the stirring process, the floating bacteria floating on the material are fully degassed, and the gas is discharged to the outside of the top cover structure through the exhaust structure 3.

[0041] Compared with the prior art, the multi-stage stirring structure 4 of the present invention deaerated the floating bacteria that rise with the material through thorough stirring. After deaeration, the floating bacteria lose their ability to float on top of the material and return to the material.

[0042] The multi-stage stirring structure 4 may include stirring blades of various sizes and stirring drive components.

[0043] In an optional embodiment of this example, the multi-stage stirring structure 4 includes a drive component 41, a stirring shaft 42, and a stirring blade mechanism. The drive component 41 is connected to the top cover structure 2, and the drive component 41 is connected to the stirring blade mechanism through the stirring shaft 42. The stirring blade mechanism is located inside the reactor structure 1, and the stirring blade mechanism is used to stir the material at the top of the reactor structure 1 in stages.

[0044] Specifically: the drive component 41 is connected to the top cover structure 2, and the stirring shaft 42 connected to the rotating part of the drive component 41 extends into the interior of the top cover structure 2. The stirring blade mechanism at the end of the stirring shaft 42 away from the drive component 41 extends into the reactor structure 1 to stir the material at the top of the reactor structure 1 step by step so that the floating bacteria can be fully degassed.

[0045] Preferably, a bearing is provided between the stirring shaft 42 and the top cover structure 2, which can effectively prevent the stirring shaft 42 from wearing the top cover structure 2 and reduce the gas flowing out from the gap between the stirring shaft 42 and the top cover structure 2.

[0046] Furthermore, the stirring blade mechanism includes a first stirring blade 44 and a plurality of second stirring blades 43. The first stirring blade 44 and the plurality of second stirring blades 43 are sequentially arranged on the stirring shaft 42 along the material outward discharge direction inside the reactor structure 1. The first stirring blade 44 is used to stir and lift the material inside the reactor structure 1.

[0047] Specifically: the first stirring blade 44 and multiple second stirring blades 43 are both located at the top of the reactor structure 1. The first stirring blade 44 is located below the multiple second stirring blades 43, and the blades of the first stirring blade 44 are larger than the blades of the second stirring blades 43. The first stirring blade 44 stirs the material at the top of the reactor structure 1, and with the rotation of the first stirring blade 44, the material rises and is then further stirred by the multiple second stirring blades 43.

[0048] The second stirring blade 43 can be two, three, four, or five, etc.

[0049] Furthermore, the distance between the multiple second stirring blades 43 is smaller than the distance between the bottommost second stirring blade 43 and the first stirring blade 44. The larger distance between the first stirring blade 44 and the bottommost second stirring blade 43 provides a larger mixing space for the material after it has been initially stirred by the first stirring blade 44. Then, when the material passes through the multiple second stirring blades 43, the smaller space between the multiple second stirring blades 43 allows the floating bacteria in the material to be fully stirred and degassed.

[0050] In an optional embodiment of this example, the reactor structure 1 includes a lower reactor body 11 and an upper reactor body 12, with the top of the lower reactor body 11 connected to the upper reactor body 12; the upper reactor body 12 is covered by a top cover structure 2, and a material sedimentation space is formed between the upper reactor body 12 and the top cover structure 2; the upper reactor body 12 is provided with a reflux port 121, which is used to connect the bottom of the material sedimentation space with the interior of the upper reactor body 12; the first stirring blade 44 and a plurality of second stirring blades 43 are all disposed inside the upper reactor body 12.

[0051] Specifically: the lower reactor body 11 and the upper reactor body 12 are connected and are detachably connected, preferably by a flange connection; the upper reactor body 12 has a structure that is wider at the bottom and narrower at the top, specifically, the lower end of the upper reactor body 12 has the same inner diameter as the lower reactor body 11 and gradually tapers upwards into a cone shape, and the upper end of the upper reactor body 12 is a cylindrical tubular structure; multiple second stirring blades 43 are located at the upper end of the upper reactor body 12, while the first stirring blades 44 are located at the lower end of the upper reactor body 12;

[0052] Since the lower end of the upper reactor body 12 is a conical structure, a material sedimentation space is formed between its outer wall and the inner wall of the top cover structure 2. After the material flows out from the top of the upper reactor body 12, it gathers in the material sedimentation space. A return port 121 is provided at the bottom of the upper reactor body 12. After the material settles, it flows back into the lower reactor body 11 from the return port 121.

[0053] In an optional embodiment of this example, the top cover structure 2 includes a top cover body 21 and a water outlet weir 22. The top cover body 21 covers the upper reactor body 12 and forms a material sedimentation space between it and the outer wall of the upper reactor body 12. The top cover body 21 is connected to the multi-stage stirring structure 4. The water outlet weir 22 is distributed around the top cover body 21 and is used to discharge water from the material sedimentation space.

[0054] In an optional embodiment of this invention, the exhaust structure 3 includes an exhaust pipe 31, one end of which extends into the top cover structure 2, and the other end communicates with the outside of the top cover structure 2. Preferably, the end of the exhaust pipe 31 furthest from the top cover structure 2 is connected to an external gas collection device to prevent the indiscriminate emission of gas from causing air pollution.

[0055] Furthermore, the exhaust structure 3 also includes a gas collecting hood 32 located within the top cover structure 2, which covers the top of the upper reactor body 12; one end of the exhaust pipe 31 extending into the top cover structure 2 is connected to the gas collecting hood 32. The gas collecting hood 32 covering the top of the upper reactor body 12 allows for better collection of the gas discharged from the top of the upper reactor body 12; and the stirring shaft 42 passes through the gas collecting hood 32 and enters the upper reactor body 12.

[0056] In an optional embodiment of this invention, a water supply mechanism 13 is connected to the bottom of the lower reactor body 11. The water supply end of the water supply mechanism 13 is in communication with the interior of the lower reactor body 11.

[0057] Furthermore, the water supply mechanism 13 includes a vortex distributor 131, the discharge end of which is connected to the interior of the lower reactor body 11, and the feed end of which is used to connect to an external feeding device. The vortex distributor 131 can achieve the effect of uniform material distribution.

[0058] Furthermore, the water supply mechanism 13 also includes a water distributor support 132, which is located inside the lower reactor body 11 and connected to the vortex water distributor 131. The water distributor support 132 is located inside the lower reactor body 11 and is used to support the vortex water distributor 131.

[0059] Finally, it should be noted that the various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. The above embodiments in this specification are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An anaerobic ammonia-oxidizing bacteria reactor, characterized in that, It includes a reactor structure (1), a top cover structure (2), an exhaust structure (3) and a multi-stage stirring structure (4), wherein the top of the reactor structure (1) is covered by the top cover structure (2). The multi-stage stirring structure (4) is connected to the top cover structure (2), and the multi-stage stirring structure (4) extends at least partially into the reactor structure (1). The multi-stage stirring structure (4) is used to stir the material at the top of the reactor structure (1) step by step. The exhaust structure (3) is connected to the top cover structure (2) and is used to exhaust the gas inside the top cover structure (2); The multi-stage stirring structure (4) includes a stirring shaft (42) and a stirring blade mechanism; The stirring blade mechanism is located inside the reactor structure (1), and the stirring blade mechanism is used to stir the material at the top of the reactor structure (1) step by step; The stirring blade mechanism includes a first stirring blade (44) and a plurality of second stirring blades (43). The first stirring blade (44) and the plurality of second stirring blades (43) are arranged sequentially on the stirring shaft (42) along the material discharge direction inside the reactor structure (1). The first stirring blade (44) is used to stir and lift the material inside the reactor structure (1). The reactor structure (1) includes a lower reactor body (11) and an upper reactor body (12). The lower end of the upper reactor body (12) is a conical structure. The upper reactor body (12) is covered by the top cover structure (2), and a material sedimentation space is formed between the upper reactor body (12) and the top cover structure (2). The upper reactor body (12) is provided with a reflux port (121), which is used to connect the bottom end of the material sedimentation space with the interior of the upper reactor body (12). The upper reactor body (12) has a structure that is wider at the bottom and narrower at the top. The lower end of the upper reactor body (12) has the same inner diameter as the lower reactor body (11) and gradually tapers upwards into a cone shape. The upper end of the upper reactor body (12) is a cylindrical tubular structure. Multiple second stirring blades (43) are located at the upper end of the upper reactor body (12), while the first stirring blades (44) are located at the lower end of the upper reactor body (12).

2. The anaerobic ammonia-oxidizing bacteria reactor according to claim 1, characterized in that, The multi-stage stirring structure (4) further includes a driving component (41), which is connected to the top cover structure (2) and is connected to the stirring blade mechanism via the stirring shaft (42).

3. The anaerobic ammonia-oxidizing bacteria reactor according to claim 1, characterized in that, The distance between the plurality of second stirring blades (43) is less than the distance between the bottommost second stirring blade (43) and the first stirring blade (44).

4. The anaerobic ammonia-oxidizing bacteria reactor according to claim 1, characterized in that, The top of the lower reactor body (11) is connected to the upper reactor body (12).

5. The anaerobic ammonia-oxidizing bacteria reactor according to claim 4, characterized in that, The exhaust structure (3) includes an exhaust pipe (31), one end of which extends into the top cover structure (2), and the other end is connected to the outside of the top cover structure (2).

6. The anaerobic ammonia-oxidizing bacteria reactor according to claim 5, characterized in that, The exhaust structure (3) also includes a gas collection hood (32) located inside the top cover structure (2), and the gas collection hood (32) covers the top of the upper reactor body (12); One end of the exhaust pipe (31) that extends into the top cover structure (2) is connected to the gas collection cover (32).

7. The anaerobic ammonia-oxidizing bacteria reactor according to claim 5, characterized in that, The bottom of the lower reactor body (11) is connected to a water supply mechanism (13).

8. The anaerobic ammonia-oxidizing bacteria reactor according to claim 7, characterized in that, The water supply mechanism (13) includes a vortex distributor (131), the discharge end of which is connected to the interior of the lower reactor body (11), and the feed end of which is used to connect to an external feeding device.

9. The anaerobic ammonia-oxidizing bacteria reactor according to claim 8, characterized in that, The water supply mechanism (13) also includes a water distributor bracket (132), which is located inside the lower reactor body (11) and is connected to the vortex water distributor (131).

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