Integrated anaerobic ammonia oxidation granular strain proliferation reaction device

Abstract

The utility model discloses an integrated anaerobic ammonia oxidation granular strain proliferation reaction device, which belongs to the technical field of anaerobic ammonia oxidation granular strain proliferation, and comprises a reaction tank, the top of the reaction tank is connected with a water inlet device, the water inlet device comprises a water collecting tank, and the water collecting tank is communicated with a variable frequency pump; an upper inclined plate precipitator and a bottom aeration device are arranged in the reaction tank, an inclined plate precipitation area is arranged in the upper inclined plate precipitator, the inclined plate precipitation area is communicated with a water outlet channel, and the water outlet channel is communicated with a water outlet pipe; the bottom aeration device is communicated with an air inlet device, the air inlet device comprises an air compressor, the air compressor is communicated with an air inlet pipe, and the air inlet pipe extends into the reaction tank and is communicated with the bottom aeration device. The device can be manufactured autonomously, is simple and practical, is wide in application, can be quickly started as required, can realize strain proliferation, and simultaneously reduces strain loss, waste and cost.

Description

Technical Field

[0001] This utility model relates to the field of anaerobic ammonia oxidation granular bacteria propagation reaction technology, specifically to an integrated anaerobic ammonia oxidation granular bacteria propagation reaction device. Background Technology

[0002] Anaerobic ammonia oxidation reactors are an important technology in wastewater treatment. Their working principle is based on the biological activity of anaerobic ammonia-oxidizing bacteria. These microorganisms, under anoxic or anaerobic conditions, utilize ammonia nitrogen as an electron donor and nitrite as an electron acceptor to carry out redox reactions, ultimately producing nitrogen gas and water, thus effectively removing nitrogen from wastewater. During this process, the anaerobic ammonia-oxidizing bacteria also generate energy to support their own growth and reproduction.

[0003] However, the anaerobic ammonia oxidation reactor still has the following problems:

[0004] 1. Existing anaerobic ammonia oxidation reactors have complex structures, are difficult to operate, and have slow propagation of particulate microorganisms;

[0005] 2. The existing anaerobic ammonia oxidation reactor has uneven aeration, which easily causes granular sludge to accumulate at the bottom, resulting in calcification and necrosis of the granular sludge;

[0006] 3. Existing anaerobic ammonia oxidation reactors have low processing loads, and when the processing load is high, a large amount of particulate microbial inoculum is easily lost, resulting in waste;

[0007] 4. Existing anaerobic ammonia oxidation reactors have complex structures and high costs, which prevents their widespread application. Utility Model Content

[0008] To address the aforementioned shortcomings of existing technologies, this utility model provides an integrated anaerobic ammonia oxidation granular microbial inoculum propagation reaction device. This integrated anaerobic ammonia oxidation granular microbial inoculum propagation reaction device can be manufactured independently, is simple and practical, has wide applications, can be quickly started up as needed, can achieve microbial inoculum propagation, and at the same time reduce microbial inoculum loss, waste, and costs.

[0009] To solve the above-mentioned technical problems, this utility model provides an integrated anaerobic ammonia oxidation granular bacteria propagation reaction device, including a reaction tank. The top of the reaction tank is connected to a water inlet device, which includes a water collection tank. The water collection tank is connected to a variable frequency pump, which is connected to the top of the reaction tank. The reaction tank is equipped with an upper inclined plate sedimentation device and a bottom aeration device. The upper inclined plate sedimentation device has an inclined plate sedimentation area, which is connected to an outlet pipe located at the top of the reaction tank. The bottom aeration device is connected to an air intake device, which includes an air compressor located outside the reaction tank. The air compressor is connected to an air intake pipe, which extends into the reaction tank and connects to the bottom aeration device.

[0010] In a further improvement of this utility model, the variable frequency pump is connected to a liquid flow meter, the liquid flow meter is connected to a water inlet pipe, and the water inlet pipe is located at the top of the reaction tank.

[0011] Through the above design, this solution makes it easier to control the water inflow.

[0012] In a further improvement of this utility model, the water collection tank is connected to a water inlet valve, and the water inlet valve is connected to a water source.

[0013] Through the above design, this solution makes it easier to control the water inlet.

[0014] In a further improvement of this utility model, the upper inclined plate sedimentator includes a shell, the upper right end of the inner cavity of the shell is connected to the water outlet pipe; an inclined plate sedimentation zone is provided in the lower part of the inner cavity of the shell; a baffle plate is provided at the bottom left end of the shell, a return water plate is provided at the bottom of the baffle plate, and an upper water plate is connected to the top of the return water plate.

[0015] Through the above design, this scheme can more easily separate precipitates.

[0016] In a further improvement of this utility model, the water inlet plate and the shell form an upper water channel, the return water plate, the bottom of the inclined plate sedimentation area and the baffle plate form a return water channel, and the return water plate and the baffle plate form a sedimentation channel; the upper water channel, the return water channel and the sedimentation channel are connected in sequence; the return water channel is connected to the inclined plate sedimentation area; the inclined plate sedimentation area includes multiple inclined plates arranged at intervals.

[0017] Through the above design, this scheme can more easily separate precipitates.

[0018] In a further improvement of this utility model, the bottom aeration device includes 31 aeration discs evenly arranged and 3 concentrically arranged annular aeration pipes.

[0019] Through the above design, this scheme can facilitate more uniform aeration.

[0020] In a further improvement of this utility model, the air compressor is connected to a main air intake valve, the main air intake valve is connected to an air filter, and the air filter is connected to a two-way air distribution pipe; one end outlet of the two-way air distribution pipe is connected to an air intake valve I, the air intake valve I is connected to an air intake pipe I, and the air intake pipe I is connected to an aeration disc; the other end outlet of the two-way air distribution pipe is connected to an air intake valve II, the air intake valve II is connected to an air intake pipe II, and the air intake pipe II is connected to an annular aeration pipe.

[0021] Through the above design, this solution makes it easier to supply air to the bottom aeration device.

[0022] In a further improvement of this utility model, a pH meter is installed on the water collection tank.

[0023] With the above design, this solution makes it easier to detect the pH value of the influent.

[0024] In a further improvement of this utility model, the bottom of the reaction vessel is provided with one manhole, one vent, and four sampling ports, which are evenly distributed circumferentially.

[0025] The above design makes subsequent maintenance, venting, and sampling easier.

[0026] In a further improvement of this invention, the inner wall of the reaction vessel is treated with a spray coating for corrosion protection.

[0027] Through the above design, this solution can be more easily prevented from corrosion.

[0028] Compared with the prior art, the present invention has the following beneficial effects:

[0029] This invention is capable of being manufactured independently, is simple and practical, has wide applications, can be quickly started up as needed, can achieve strain propagation, and at the same time reduce strain loss, waste, and costs. Attached Figure Description

[0030] To more clearly illustrate the background technology or the technical solution of this utility model, the accompanying drawings used in conjunction with the prior art or specific embodiments are briefly introduced below. Obviously, the structures, proportions, sizes, etc., shown in the accompanying drawings are only used to complement the content disclosed in the specification, so as to enable those skilled in the art to understand and read them, and are not intended to limit the implementation conditions of this utility model. Therefore, they have no substantial technical significance. Any modification to the structure, change in the proportional relationship, or adjustment of the size, without affecting the effects and purposes that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model.

[0031] Figure 1 This is a structural schematic diagram of a specific embodiment of the present utility model.

[0032] Figure 2 This is a schematic diagram of the bottom aeration device structure according to a specific embodiment of the present invention.

[0033] The diagram shows: 1. Reaction tank; 2. Water collection tank; 3. Variable frequency pump; 4. Liquid flow meter; 5. Inlet pipe; 6. Inlet valve; 7. Shell; 8. Outlet pipe; 9. Inclined plate sedimentation zone; 90. Inclined plate; 10. Baffle plate; 11. Return water plate; 12. Water inlet plate; 13. Water inlet channel; 14. Return water channel; 15. Sedimentation channel; 16. Aeration disc; 17. Annular aeration pipe; 18. Air compressor; 19. Main air inlet valve; 20. Air filter; 21. Two-way air pipe; 22. Air inlet valve I; 23. Air inlet pipe I; 24. Air inlet valve II; 25. Air inlet pipe II. Detailed Implementation

[0034] To enable those skilled in the art to better understand the technical solutions of this utility model, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model.

[0035] Meanwhile, the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer" used in this specification indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model 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. Therefore, they should not be construed as limitations on this utility model. Changes or adjustments to the relative relationships, without substantially altering the technical content, should also be considered as within the scope of implementation of this utility model.

[0036] Furthermore, it should be noted in the description of this specification that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; they can refer to the internal connection of two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood through the specific circumstances.

[0037] Currently, anaerobic ammonia oxidation reactors have the following problems:

[0038] 1. Existing anaerobic ammonia oxidation reactors have complex structures, are difficult to operate, and have slow propagation of particulate microorganisms;

[0039] 2. The existing anaerobic ammonia oxidation reactor has uneven aeration, which easily causes granular sludge to accumulate at the bottom, resulting in calcification and necrosis of the granular sludge;

[0040] 3. Existing anaerobic ammonia oxidation reactors have low processing loads, and when the processing load is high, a large amount of particulate microbial inoculum is easily lost, resulting in waste;

[0041] 4. Existing anaerobic ammonia oxidation reactors have complex structures and high costs, which prevents their widespread application.

[0042] Therefore, the design concept of this application is to combine anammox technology, granular sludge cultivation and integrated process design into a high-efficiency biological denitrification device. Through functional integration and granular sludge enhancement, it achieves efficient and low-consumption biological denitrification, while also enabling rapid proliferation of granular bacteria.

[0043] like Figure 1-2 As shown, this application provides an integrated anaerobic ammonia oxidation granular bacteria propagation reaction device, including a reaction tank 1. The top of the reaction tank 1 is connected to a water inlet device, which includes a water collection tank 2. The water collection tank 2 is connected to a variable frequency pump 3, which is connected to the top of the reaction tank 1. The reaction tank 1 is equipped with an upper inclined plate sedimentation device and a bottom aeration device. The upper inclined plate sedimentation device is equipped with an inclined plate sedimentation zone 9, which is connected to an outlet pipe 8 located at the top of the reaction tank 1. The bottom aeration device is connected to an air intake device, which includes an air compressor 18 located outside the reaction tank 1. The air compressor 18 is connected to an air intake pipe, which extends into the reaction tank and connects to the bottom aeration device.

[0044] The variable frequency pump 3 is connected to a liquid flow meter 4, and the liquid flow meter 4 is connected to a water inlet pipe 5. The water inlet pipe 5 is located at the top of the reaction tank 1. The liquid flow meter 4 is more conducive to controlling the flow rate, and the water inlet pipe 5 can be welded to the top of the reaction tank 1.

[0045] The water collection tank 2 is connected to a water inlet valve 6, which is connected to a water source. When in use, the water inlet valve 6 is opened to replenish the water collection tank 2.

[0046] The upper inclined plate sedimentation tank includes a shell 7 with a lower opening, the upper right end of the inner cavity of the shell 7 is connected to the water outlet pipe 8; an inclined plate sedimentation zone 9 is provided in the lower part of the inner cavity of the shell 7; a baffle plate 10 is provided at the bottom left end of the shell 7, a return water plate 11 is provided at the bottom of the baffle plate 10, and an upper water plate 12 is connected to the top of the return water plate 11.

[0047] The upper water plate 12 and the right outer wall of the shell 7 form an upper water channel 13; the return water plate 11, the bottom of the inclined plate sedimentation area 9 (bottom of the lower opening of the shell 7), and the baffle plate 10 form a return water channel 14; the return water plate 11 and the baffle plate 10 form a sedimentation channel 15; the upper water channel 13, the return water channel 14, and the sedimentation channel 15 are connected in sequence; the return water channel 14 is connected to the inclined plate sedimentation area 9; the inclined plate sedimentation area 9 includes multiple inclined plates 90 arranged in parallel at intervals.

[0048] The reaction tank 1 is fed by water from the top (water inlet pipe 5) and water is discharged from the top (the upper right end of the inner cavity of the shell 7 is connected to the water outlet pipe 8). The water after the reaction in the reaction tank 1 enters through the upper water channel 13 and turns back at the bottom middle (returned through the return water channel 14 to the inclined plate sedimentation area 9 and sedimentation channel 15 respectively), and mud and water are separated by the inclined plate sedimentation principle.

[0049] The inclined plate sedimentation principle of the inclined plate sedimentation zone 9 in this application is mainly based on the "shallow pool principle" and the "laminar flow principle". The inclined plate sedimentation divides the water flow into thin layers through a series of parallel inclined plates, improves the sedimentation efficiency by utilizing the shallow pool principle, and promotes the sedimentation effect through the laminar flow state.

[0050] The bottom aeration device includes 31 aeration discs 16 (connected in series via aeration pipes) evenly arranged and 3 concentrically arranged annular aeration pipes 17 (connected in series via aeration pipes).

[0051] The air compressor 18 is connected to a main air intake valve 19, which is connected to an air filter 20. The air filter 20 is connected to a two-way air distribution pipe 21. One end of the two-way air distribution pipe 21 is connected to an air intake valve I 22, which is connected to an air intake pipe I 23. The air intake pipe I 23 is connected to an aeration disc 16. The other end of the two-way air distribution pipe 21 is connected to an air intake valve II 24, which is connected to an air intake pipe II 25. The air intake pipe II 25 is connected to an annular aeration pipe 17.

[0052] In use, the main air inlet valve 19 is used to control the gas entering the main switch, the air filter 20 is used to filter the gas and reduce factors that may affect the internal environment of the reaction tank 1, the opening and closing of the air inlet valve I 22 can control the start and stop of the aeration disc 16, and the opening and closing of the air inlet valve II 24 can control the start and stop of the annular aeration pipe 17.

[0053] The water collection tank 2 is equipped with a pH meter to detect the pH value inside the water collection tank 2, so as to facilitate timely adjustment of the pH value.

[0054] The bottom of the reaction vessel 1 is provided with one manhole, one vent, and four sampling ports, which are evenly distributed circumferentially.

[0055] The inner wall of the reaction vessel 1 is treated with anti-corrosion spraying.

[0056] The closest existing technologies to this paper are: CN119286618A A cultivation device and method for anaerobic ammonia oxidation bacteria; CN119263482A An integrated anaerobic ammonia oxidation denitrification device and its process for aquaculture; and CN119219196A A method and device for cultivating integrated short-cut nitrification anaerobic ammonia oxidation granular sludge.

[0057] shortcoming:

[0058] 1. Existing anaerobic ammonia oxidation reactors have complex structures, are difficult to operate, and have slow propagation of particulate microorganisms;

[0059] 2. Uneven aeration can easily cause granular sludge to accumulate at the bottom, leading to calcification and necrosis of the granular sludge.

[0060] 3. Existing reactors have low processing loads, and when the processing load is high, a large amount of particulate microbial inoculum is easily lost, resulting in waste;

[0061] 4. Due to its complex structure and high cost, it cannot be widely promoted and applied.

[0062] In summary, the shortcomings of existing technologies include slow proliferation of granular sludge, uneven aeration, and easy loss of granular microorganisms during the production process.

[0063] The technical problems to be solved in this application are: slow bacterial proliferation, uneven aeration, and easy loss of granular bacterial culture, so as to facilitate operation and management.

[0064] The purpose of this application is to manufacture a simple and efficient integrated anaerobic ammonia oxidation reactor based on the results of preliminary small-scale and pilot-scale experiments. This reactor can be manufactured independently, is simple and practical, has a wide range of applications, can be started up quickly as needed, can achieve microbial proliferation, and at the same time reduce microbial loss, waste, and costs.

[0065] like Figure 1-2 As shown, the reactor provided by this patent mainly includes a reaction tank 1, a bottom aeration device, and an upper inclined plate sedimentation tank.

[0066] The reaction tank 1 provided by this patent has a main body diameter of 4m and a height of 9m. It is made of Q235B material and has an internal anti-corrosion coating. The bottom of the tank is equipped with one manhole, one DN100 vent, and four DN50 sampling ports evenly distributed. The bottom of the tank is aerated by a combination of 31 aeration discs 16 (diameter 100mm) and three annular aeration pipes 17 (DN32). The upper part of the tank is equipped with an upper inclined plate sedimentation tank and a DN200 outlet pipe 8.

[0067] The upper inclined plate sedimentation tank has a self-designed structure, is made of PP material with a thickness of 20mm, the inclined plate thickness is 6mm, and the spacing between the inclined plates (or inclined tubes) is 80mm.

[0068] Two aeration systems are combined, consisting of 31 aeration discs 16 and 3 annular aeration pipes 17, to ensure uniform aeration and avoid dead zones. An air compressor is used as the air source at the front end, and a gas flow meter and control valve are installed to achieve precise aeration.

[0069] The reaction tank 1 is fed into and discharged from the top. The water after reaction in the reaction tank 1 enters from the top of the inclined plate sedimentation tank (enters through the upper water channel 13) and turns back in the middle of the bottom (returned through the return water channel 14 to the inclined plate sedimentation zone 9 and sedimentation channel 15 respectively), and the mud and water are separated by the principle of inclined plate sedimentation.

[0070] A pH meter monitors the pH in the water distribution tank in real time. Workers adjust the pH based on the data from the pH meter. After the incoming water has been adjusted for pH and other parameters, it enters reaction tank 1 to ensure stable influent and achieve rapid proliferation of particulate bacteria.

[0071] Key points / improvements of this application:

[0072] 1. An integrated anaerobic ammonia oxidation granular bacteria propagation reactor is provided. This reactor has a simple structure, is easy to operate, and is easy to manufacture.

[0073] 2. The upper inclined plate sedimentation tank is independently designed and manufactured, which can realize rapid separation of mud and water, improve processing efficiency, and reduce the loss of microorganisms.

[0074] 3. The bottom aeration device uses two aeration systems combined with 31 aeration discs 16 and 3 annular aeration pipes 17 to aerate, so that the aeration is uniform and dead zones are avoided. An air compressor is used as the air source at the front end, and a gas flow meter and control valve are installed to achieve precise aeration.

[0075] 4. The incoming water from the front end of the reactor 1 is adjusted for parameters such as pH by the water distribution tank before entering the reactor to ensure stable influent and achieve rapid proliferation of particulate bacteria.

[0076] Advantages of this application:

[0077] 1. This patent is an integrated anaerobic ammonia oxidation granular microbial propagation reactor, which has a simple structure, small footprint, easy operation, and is easy to promote.

[0078] 2. Based on the preliminary small-scale and pilot-scale tests, this reactor exhibits uniform aeration, enabling rapid and stable proliferation of granular microbial strains, reducing strain loss, and allowing the reactor to operate efficiently and stably for extended periods.

[0079] 3. This method has lower energy consumption and cost compared to other biological nitrogen removal methods, and the system is less prone to collapse.

[0080] Although the present invention has been described in detail with reference to the accompanying drawings and preferred embodiments, the present invention is not limited thereto. Without departing from the spirit and essence of the present invention, those skilled in the art can make various equivalent modifications or substitutions to the embodiments of the present invention, and such modifications or substitutions should all be within the scope of the present invention. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should also be included within the protection scope of the present invention. Therefore, the protection scope of the present invention should be determined by the protection scope of the claims.

Claims

1. An integrated anaerobic ammonia oxidation granular bacteria propagation reaction device, characterized in that, The device includes a reaction tank, the top of which is connected to a water inlet device. The water inlet device includes a water collection tank, which is connected to a variable frequency pump, which is connected to the top of the reaction tank. Inside the reaction tank, there is an upper inclined plate sedimentation tank and a bottom aeration device. The upper inclined plate sedimentation tank has an inclined plate sedimentation zone, which is connected to an outlet pipe located at the top of the reaction tank. The bottom aeration device is connected to an air intake device, which includes an air compressor located outside the reaction tank. The air compressor is connected to an air intake pipe, which extends into the reaction tank and connects to the bottom aeration device.

2. The integrated anaerobic ammonia oxidation granular bacteria propagation reaction device according to claim 1, characterized in that, The variable frequency pump is connected to a liquid flow meter, and the liquid flow meter is connected to a water inlet pipe, which is located at the top of the reaction tank.

3. The integrated anaerobic ammonia oxidation granular bacteria propagation reaction device according to claim 2, characterized in that, The water collection tank is connected to an inlet valve, and the inlet valve is connected to a water source.

4. The integrated anaerobic ammonia oxidation granular bacteria propagation reaction device according to claim 1, characterized in that, The upper inclined plate sedimentation tank includes a shell, the upper right end of the inner cavity of the shell is connected to the water outlet pipe; an inclined plate sedimentation zone is provided in the lower part of the inner cavity of the shell; a baffle plate is provided at the bottom left end of the shell, a return water plate is provided at the bottom of the baffle plate, and an upper water plate is connected to the top of the return water plate.

5. The integrated anaerobic ammonia oxidation granular bacteria propagation reaction device according to claim 4, characterized in that, The water inlet plate and the shell form an upper water channel, the water return plate, the bottom of the inclined plate sedimentation area, and the baffle plate form a water return channel, and the water return plate and the baffle plate form a sedimentation channel; the upper water channel, the water return channel, and the sedimentation channel are connected in sequence; the water return channel is connected to the inclined plate sedimentation area; the inclined plate sedimentation area includes multiple inclined plates arranged at intervals.

6. The integrated anaerobic ammonia oxidation granular bacteria propagation reaction device according to claim 1, characterized in that, The bottom aeration device includes 31 aeration discs evenly arranged and 3 concentrically arranged annular aeration pipes.

7. The integrated anaerobic ammonia oxidation granular bacteria propagation reaction device according to claim 6, characterized in that, The air compressor is connected to a main air intake valve, which is connected to an air filter. The air filter is connected to a two-way air distribution pipe. One end of the two-way air distribution pipe is connected to an air intake valve I, which is connected to an air intake pipe I, which is connected to an aeration disc. The other end of the two-way air distribution pipe is connected to an air intake valve II, which is connected to an air intake pipe II, which is connected to an annular aeration pipe.

8. The integrated anaerobic ammonia oxidation granular bacteria propagation reaction device according to claim 1, characterized in that, A pH meter is installed on the water collection tank.

9. The integrated anaerobic ammonia oxidation granular bacteria propagation reaction device according to claim 1, characterized in that, The bottom of the reaction vessel is equipped with one manhole, one vent, and four sampling ports, which are evenly distributed circumferentially.

10. The integrated anaerobic ammonia oxidation granular bacteria propagation reaction device according to claim 1, characterized in that, The inner wall of the reaction vessel is treated with anti-corrosion coating.

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