Anaerobic ammonia oxidation reactor
By combining a multi-chamber structure with airflow stirring, the problems of high energy consumption and uneven mass transfer in traditional anaerobic ammonia oxidation reactors are solved, achieving efficient microbial reaction and low-cost operation.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-15
- Publication Date
- 2026-03-24
AI Technical Summary
Mechanical stirring in traditional anaerobic ammonia oxidation reactors has problems such as high energy consumption, significant damage to microbial flocs, and high maintenance costs. Furthermore, existing non-mechanical stirring solutions have poor mass transfer effects or uneven water flow distribution.
The anaerobic ammonia oxidation reactor with a multi-chamber structure includes a top layer, a bottom layer, and a main reaction unit. It utilizes a vertical flow structure and an overflow pipe for connection, combined with an airflow stirring unit and mechanical stirring blades. By intermittently pumping in an oxygen-containing stirring airflow, spiral airflow stirring is achieved, which promotes contact of reactants.
It improves reaction efficiency, reduces energy consumption and maintenance requirements, maintains microbial activity, enhances mass transfer, and has a flexible design that is easy to maintain.
Smart Images
Figure CN224030780U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to sewage treatment and anaerobic ammonia oxidation reaction equipment technical field, concretely relates to a kind of anaerobic ammonia oxidation reactors. BACKGROUND
[0002] The information disclosed in the background of the utility model is only intended to increase the understanding of the overall background of the utility model, and is not necessarily considered to recognize or imply in any form that the information constitutes prior art known to those skilled in the art.
[0003] Nitrogen is the main factor causing water eutrophication, and reducing nitrogen emissions is increasingly valued, therefore, research and development of economic and efficient denitrification technology has become the research focus in the field of water pollution control engineering.
[0004] Anaerobic ammonia oxidation is a microbial process that can directly convert ammonia nitrogen to nitrogen gas, and has significant energy-saving and greenhouse gas emission reduction advantages in the field of wastewater treatment and environmental remediation. Traditional anaerobic ammonia oxidation reactors usually use mechanical stirring to ensure that the reactants are fully mixed and mass transfer to maintain reaction efficiency. However, mechanical stirring has some inherent limitations, including high energy consumption, potential damage to fragile microbial flocs, and high maintenance costs.
[0005] In the design of existing anaerobic ammonia oxidation reactors, in order to improve treatment efficiency and reduce operating costs, existing technicians are constantly exploring more effective stirring methods. Although non-mechanical stirring schemes such as gas stripping stirring, pulse water feeding have been proposed, these methods still have certain limitations, such as unsatisfactory mass transfer effect or difficulty in achieving uniform water flow distribution. UTILITY MODEL CONTENT
[0006] To solve the above technical problems, the utility model provides an anaerobic ammonia oxidation reactor, which aims to improve treatment efficiency, reduce operating costs, and overcome the limitations of traditional mechanical stirring methods.
[0007] To achieve the above purpose, the utility model adopts the following technical solutions:
[0008] An anaerobic ammonia oxidation reactor comprises a top layer reaction unit, a bottom layer reaction unit and a plurality of main body reaction units; the top layer reaction unit, the bottom layer reaction unit and the main body reaction unit are respectively provided with corresponding reaction cavities, the reaction cavities are arranged according to a vertical flow structure, and two adjacent reaction cavities are communicated through overflow pipes; the shell of the top layer reaction unit is a cylindrical shell provided with a self-contained top layer cavity; the bottom layer reaction unit and the main body reaction unit are both cylindrical shells provided with only bottom covers, and the main body cavities and the bottom layer cavities are formed by the shell of the top layer reaction unit, the bottom cover of the bottom layer reaction unit and the bottom cover of the main body reaction unit in cooperation; the top layer cavity is further provided with a gas outlet, a water inlet and a waste gas converging port; the main body cavities and the bottom layer cavities are respectively communicated with the waste gas converging port through the arranged gas outlets and corresponding pipelines; the bottom layer cavity is further provided with an overflow drainage port; each reaction cavity is provided with a corresponding airflow stirring unit; the airflow stirring unit comprises a rotating disc installed at the bottom of the corresponding reaction cavity, the rotating disc is provided with an air channel, and the air channel is provided with a plurality of air nozzles; the rotating disc is provided with a driving seat extending out of the bottom of the corresponding reaction cavity, the lower end of the driving seat is connected with a gas conveying branch pipe communicated with the air channel of the corresponding rotating disc through a rotary connector, and the gas conveying branch pipes are all communicated with a gas conveying main pipe; the driving seat is drivingly connected with a corresponding driving device through a corresponding transmission mechanism.
[0009] As preferred, the top layer cavity and the bottom layer cavity are respectively provided with overflow ports and backflow ports connected with corresponding overflow pipes;
[0010] The main body cavities are provided with overflow ports and backflow ports connected with corresponding overflow pipes.
[0011] As preferred, the gas outlets are provided with corresponding gas branch pipes communicated with gas pipes, and the gas pipes are communicated with the waste gas converging port.
[0012] As preferred, the transmission mechanism comprises a driven wheel, a driving wheel and a transmission belt; the driven wheel is installed on the driving seat, the driving wheel is installed on the output end of the driving device, and the driving device is installed on the outside of the corresponding bottom cover or the bottom of the shell of the top layer cavity through an installation frame.
[0013] As preferred, the bottom cover or the bottom of the shell of the top layer cavity is provided with a corresponding central installation hole, and the driving seat is installed in the corresponding central installation hole through a sealing bearing.
[0014] As preferred, the top layer reaction unit, the bottom layer reaction unit and the main body reaction unit are sealingly connected through corresponding sealing pads and threaded assemblies; and the bottom layer reaction unit is installed on a bottom frame.
[0015] As preferred, the rotating disc comprises a disc bottom body and a jet disc, the driving seat is integrally arranged with the disc bottom body, and the air channel is arranged in the jet disc.
[0016] As preferred, a sliding groove is formed on the lower side of the disc bottom body, and the bottom cover is provided with a guide sliding rail matched with the sliding groove.
[0017] As preferred, a filtering assembly is further arranged in the top layer cavity.
[0018] As preferred, a plurality of stirring blades are further fixedly installed on each rotating disc.
[0019] The utility model includes but is not limited to the following beneficial effects:
[0020] The utility model discloses a top layer reaction unit, a bottom layer reaction unit and a plurality of main body reaction units are arranged, and corresponding reaction cavities are arranged in each unit, and the multi-cavity structure is helpful to form a stable microbial ecological environment and is conducive to the growth and reproduction of anaerobic ammonia oxidation bacteria, thereby improving the performance of the whole reactor.
[0021] In the utility model, the reaction cavities are modularly and spatially optimized, airflow stirring units are arranged in each reaction cavity, and spiral airflow stirring is realized by the self-rotation of the rotating disc while spraying airflow.
[0022] In the utility model, intermittent pumping of stirring airflow containing oxygen is adopted, which supports the nitrosation process without affecting the activity of anaerobic ammonia oxidation bacteria, reduces energy consumption, reduces equipment wear and maintenance requirements, promotes the contact between reactants, and enhances mass transfer efficiency.
[0023] In the utility model, the design of the vertical flow structure and the application of the overflow pipe ensure that water flow can be uniformly distributed between the reaction cavities, which is conducive to maintaining the consistency and stability of the reaction conditions and improving the reaction efficiency.
[0024] In the utility model, the modular design is adopted, and each reaction unit can be independently operated or repaired, which is convenient for daily maintenance. BRIEF DESCRIPTION OF DRAWINGS
[0025] Fig. 1 It is a whole structure schematic view of the utility model;
[0026] Fig. 2 It is a cooperation structure schematic view of the rotating drum and the fixed seat.
[0027] The reference signs involved in the drawings are:
[0028] 1, top layer reaction unit; 11, gas outlet; 12, water inlet; 13, filter assembly; 2, main body reaction unit; 3, bottom layer reaction unit; 31, overflow drain; 4, bottom frame; 5, overflow pipe; 51, overflow port; 52, backflow port; 6, exhaust pipe; 61, exhaust branch pipe; 611, exhaust port; 7, gas conveying main pipe; 71, gas conveying branch pipe; 8, airflow stirring device; 81, rotating disc; 811, disc bottom body; 812, driving seat; 813, air jet disc; 814, air channel; 815, air nozzle; 816, stirring blade; 82, driving device; 821, driven wheel; 822, mounting frame; 83, rotary connector; 84, guide slide rail. DETAILED DESCRIPTION
[0029] In order for those skilled in the art to better understand the present application, the technical solutions of the present application are further described below in conjunction with the drawings and examples.
[0030] Figs. 1-2 An anaerobic ammonia oxidation reactor is shown, comprising a top layer reaction unit 1, a bottom layer reaction unit 3 and a plurality of main body reaction units 2; the top layer reaction unit 1, the bottom layer reaction unit 3 and the main body reaction unit 2 are respectively provided with corresponding reaction cavities, and the multi-cavity structure helps to form a stable microbial ecological environment, which is conducive to the growth and reproduction of anaerobic ammonia oxidation bacteria, thereby further improving the overall performance of the reactor; the reaction cavities are arranged according to a vertical flow structure, and two adjacent reaction cavities are communicated through an overflow pipe 5.
[0031] The shell of the top layer reaction unit 1 is a cylindrical shell provided with a self-contained top layer cavity; the bottom layer reaction unit 3 and the main body reaction unit 2 are both cylindrical shells provided with only a bottom cover, and the main body cavity and the bottom layer cavity are formed by the shell of the top layer reaction unit 1, the bottom cover of the bottom layer reaction unit 3 and the main body reaction unit 2.
[0032] The top layer cavity is further provided with a gas outlet 11, a water inlet 12 and a waste gas converging port.
[0033] The main body cavity and the bottom layer cavity are respectively communicated with the waste gas converging port through the exhaust port 611 and the corresponding pipeline.
[0034] The bottom layer cavity is further provided with an overflow drain 31 for discharging wastewater treated layer by layer.
[0035] A corresponding airflow stirring unit is arranged in each reaction cavity, and since the reaction cavities of the present application are modularly designed, the wastewater depth in each reaction cavity is small, which provides a basis for ensuring the effect of airflow stirring.
[0036] The structure of the gas flow stirring unit is as follows: a rotating disc 81 is installed at the bottom of the corresponding reaction cavity, the rotating disc 81 is provided with a gas channel 814, and the gas channel 814 is provided with a plurality of gas nozzles 815; the rotating disc 81 is provided with a driving seat 812 extending out of the bottom of the corresponding reaction cavity, the lower end of the driving seat 812 is connected with a gas supply branch pipe 71 in communication with the gas channel 814 of the corresponding rotating disc 81 through a rotary connector 83, and the gas supply branch pipe is in communication with a gas supply main pipe 7; the rotary connector 83 ensures the sealed connection with the gas supply branch pipe 71 when the rotating disc 81 rotates, and the rotary connector 83 can be obtained by using the prior art, which is easy to realize and will not be described here.
[0037] The top layer cavity and the bottom layer cavity are respectively provided with overflow ports 51 and backflow ports 52 connected with corresponding overflow pipes 5.
[0038] The exhaust port 611 is provided with a corresponding exhaust branch pipe 61 in communication with an exhaust pipe 6, and the exhaust pipe 6 is in communication with the exhaust gas collecting port.
[0039] The structure of the transmission mechanism is as follows: a driven wheel 821, a driving wheel and a transmission belt; the driven wheel 821 is installed on the driving seat 812, the driving wheel is installed on the output end of the driving device 82, and the driving device 82 is installed on the outside of the corresponding bottom cover or the bottom of the shell of the top layer cavity through a mounting frame 822.
[0040] The mounting structure of the rotating disc 81 is as follows: a corresponding center mounting hole is formed in the bottom of the bottom cover or the shell of the top layer cavity, and the driving seat 812 is installed in the corresponding center mounting hole through a sealing bearing.
[0041] The connection mode between the top layer reaction unit 1, the bottom layer reaction unit 3 and the main body reaction unit 2 is as follows: sealed connection through corresponding sealing gaskets and threaded assemblies; the bottom layer reaction unit 3 is installed on the bottom frame 4.
[0042] As a preferred scheme, the rotating disc 81 comprises a disc bottom body 811 and a jet disc 813, the driving seat 812 is integrally arranged with the disc bottom body 811, so that the stability of the rotating disc 81 is better, and the gas channel 814 is formed in the jet disc 813.
[0043] A filter assembly 13 is arranged in the top layer cavity, which further enhances the functionality and processing efficiency of the anaerobic ammonia oxidation reactor.
[0044] In order to make the rotation of the rotating disc 81 more stable, a sliding groove is formed in the lower side of the disc bottom body 811, and the bottom cover is provided with a guide sliding rail 84 matched with the sliding groove.
[0045] In order to further ensure the stirring effect, a combination of airflow stirring and mechanical stirring is adopted, and a plurality of stirring blades 816 are fixedly installed on each rotating disc 81.
[0046] The working principle is as follows: the anaerobic ammonia oxidation reactor is a vertical structure anaerobic ammonia oxidation reactor, which is assembled by a plurality of modular independent reaction chambers, and uses intermittent pumping stirring airflow, the stirring airflow is airflow containing oxygen (such as air), the oxygen pumped can be accurately controlled to support the nitrosation process without affecting the activity of anaerobic ammonia oxidation bacteria, and at the same time, when the rotating disc 81 rotates, the stirring airflow is spiral-shaped, so as to realize the stirring effect. The design not only greatly reduces the disadvantages brought by the traditional mechanical stirring, but also effectively promotes the contact between the reactants through intermittent water flow impact, enhances the mass transfer efficiency, reduces the energy consumption, and reduces the equipment wear and maintenance demand.
[0047] In summary, the reactor is composed of a top layer, a bottom layer and a plurality of main body reaction units 2, each unit is provided with an independent reaction chamber to form a multi-chamber structure, which is beneficial to stabilize the microbial ecological environment and promote the growth and reproduction of anaerobic ammonia oxidation bacteria. The reaction chambers are arranged in vertical flow, the adjacent chambers are connected through overflow pipes 5, the top layer is provided with a water inlet 12, an air outlet 11 and a waste gas converging port, and the bottom layer is provided with an overflow drainage port 31. Each reaction chamber is provided with an airflow stirring unit, which comprises a rotating disc 81, an air duct 814 and an air nozzle 815. The rotating disc 81 is installed with a driving seat 812 at the bottom to connect a gas conveying branch pipe 71, and realizes sealed rotation through a rotary connector 83, and is driven by a driving device 82 in cooperation with a transmission mechanism. In the modular design reaction chamber of the utility model, the intermittent pumping spiral stirring airflow mode is adopted to realize airflow stirring, improve the treatment efficiency and reduce the operation cost.
[0048] The above description of the disclosed embodiments enables those skilled in the art to implement or use the utility model. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the utility model. Therefore, the utility model will not be limited to these embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.
Claims
1. An anaerobic ammonia oxidation reactor, characterized in that: It includes a top-level reaction unit, a bottom-level reaction unit, and multiple main reaction units. Each of the top-level, bottom-level, and main reaction units has a corresponding reaction chamber arranged in a vertical flow structure, with adjacent chambers connected by an overflow pipe. The top-level reaction unit has a cylindrical shell with a self-contained top-level cavity. The bottom-level and main reaction units are both cylindrical shells with only a bottom cover, forming the main cavity and bottom cavity respectively through the cooperation of the top-level reaction unit shell, the bottom-level reaction unit, and the main reaction unit bottom cover. The top-level cavity also includes an outlet, a water inlet, and a waste gas collection point. The main chamber and the bottom chamber are respectively connected to the exhaust gas manifold through exhaust ports and corresponding pipes; the bottom chamber is also provided with an overflow drain port; each reaction chamber is provided with a corresponding airflow stirring unit; the airflow stirring unit includes a turntable installed at the bottom of the corresponding reaction chamber, the turntable is provided with an air passage, and the air passage is provided with multiple air nozzles; the turntable is provided with a drive seat extending out of the bottom of the corresponding reaction chamber, and the lower end of the drive seat is connected to an air supply branch pipe communicating with the air passage of the corresponding turntable through a rotary connector, and the air supply branch pipe is connected to the main air supply pipe; the drive seat is connected to the corresponding drive device through a corresponding transmission mechanism.
2. The anaerobic ammonia oxidation reactor according to claim 1, characterized in that: The top cavity and bottom cavity are respectively provided with overflow ports and return ports that are connected to the corresponding overflow pipes; the main cavity is provided with overflow ports and return ports that are connected to the corresponding overflow pipes.
3. The anaerobic ammonia oxidation reactor according to claim 1, characterized in that: The exhaust port is provided with a corresponding exhaust branch pipe that is connected to the exhaust pipe, and the exhaust pipe is connected to the waste gas manifold.
4. The anaerobic ammonia oxidation reactor according to claim 1, characterized in that: The transmission mechanism includes a driven wheel, a driving wheel, and a transmission belt; the driven wheel is mounted on the drive seat, the driving wheel is mounted on the output end of the drive device, and the drive device is mounted on the outer side of the corresponding bottom cover or the bottom of the outer side of the top cavity housing via a mounting frame.
5. The anaerobic ammonia oxidation reactor according to claim 4, characterized in that: The bottom of the bottom cover or top cavity housing has a corresponding center mounting hole, and the drive seat is mounted in the corresponding center mounting hole through a sealed bearing.
6. The anaerobic ammonia oxidation reactor according to claim 1, characterized in that: The top-level reaction unit, the bottom-level reaction unit, and the main reaction unit are sealed together by corresponding sealing gaskets and threaded assemblies; the bottom-level reaction unit is mounted on the base frame.
7. The anaerobic ammonia oxidation reactor according to claim 1, characterized in that: The turntable includes a base body and a jet disc, the drive seat is integrally formed with the base body, and the air passage is opened inside the jet disc.
8. The anaerobic ammonia oxidation reactor according to claim 7, characterized in that: The bottom of the main body of the tray has a sliding groove on its lower side, and the bottom cover is provided with a guide rail that is adapted to the sliding groove.
9. The anaerobic ammonia oxidation reactor according to claim 1, characterized in that: A filter assembly is also provided inside the top cavity.
10. The anaerobic ammonia oxidation reactor according to any one of claims 1 to 9, characterized in that: Each of the aforementioned turntables is also fixedly equipped with several thousand stirring blades.