Improved anammox reactor

Abstract

The utility model relates to sewage treatment equipment technical field, concretely is an improved type anaerobic ammonia oxidation reactor, include: the reaction jar, the reaction jar includes jar body, the jar body is equipped with water distribution subassembly, circulating assembly and three -phase separation subassembly from below to top. The utility model, through adjusting water supply pipeline structure, guarantee each water distribution pipe connection water distribution nozzle quantity same, thereby guarantee each water distribution nozzle's water pressure same, make the new sewage and the sewage in the jar body even mix, utilize circulating water detection subassembly and detect circulating water pipe water quality, control feed pump and circulating pump power conveniently, avoid the mud that the water inflow fluctuation leads to to run, and convenient staff adjusts the nitrogen content of new injection sewage simultaneously, guarantee water quality stable, reduce water quality impact, through setting backflushing pipe, and backflushing pipe adopts two -way setting, can improve the backflushing effect to pipeline, avoid pipeline blockage.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment equipment technology, specifically an improved anaerobic ammonia oxidation reactor. Background Technology

[0002] Anaerobic ammonia oxidation technology is an emerging denitrification technology developed in the 1980s. It utilizes the physiological metabolic activities of microorganisms to degrade high-ammonia nitrogen wastewater, converting it into harmless nitrogen gas as the final product, thus achieving the purpose of denitrification. Compared with the currently used physical, chemical, and traditional biological methods, such as ammonia stripping, nitrification-denitrification, stripping, and the formation of magnesium ammonium phosphate precipitate, biological denitrification technology has advantages such as lower investment, lower energy consumption, lower operating costs, higher denitrification efficiency, higher degree of automation, and the ability to avoid or reduce secondary pollution and comprehensively utilize resources.

[0003] However, in existing anaerobic ammonia oxidation reactors, the internal sludge is quite sensitive to fluctuations in water quality. Large fluctuations in pH, temperature, and other values ​​of the water can easily lead to system collapse. In addition, the internal sludge tends to adhere to the three-phase separator. After prolonged use, or when there are large fluctuations in the influent flow, some sludge can be discharged with the treated water, causing sludge runoff. Furthermore, sludge runoff can easily clog the pipes. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides an improved anaerobic ammonia oxidation reactor.

[0005] The technical solution of this utility model is:

[0006] An improved anaerobic ammonia oxidation reactor includes:

[0007] The reaction vessel includes a tank body, which is provided from bottom to top with a water distribution assembly, a circulation assembly, and a three-phase separation assembly;

[0008] The water distribution assembly includes a water supply pipeline, which supplies water by a feed pump to uniformly inject wastewater into the tank. The water supply pipeline is connected to a water distribution backwash pipe, which is used to clean the water supply pipeline.

[0009] The circulation assembly includes a circulation pump, which draws water from inside the tank through a circulation water pipe and injects it into the water supply pipeline. The circulation water pipe is connected to a circulation backflushing pipe, which is used to clean the circulation water pipe.

[0010] The three-phase separation assembly includes a three-phase separator for separating sludge, biogas and water. The three-phase separator is provided with a separator flushing pipe for cleaning the three-phase separator.

[0011] Preferably, the tank is cylindrical in shape with a height-to-diameter ratio of 3:1. A mud inlet and a mud outlet are symmetrically provided on one side of the bottom of the tank, and a sampling port is provided in the middle of the tank.

[0012] Preferably, the water supply pipeline includes a main water inlet pipe, which is connected to several water distribution pipes. The water distribution pipes extend into the tank body and are connected to several water distribution nozzles, with each water distribution pipe having the same number of water distribution nozzles.

[0013] Preferably, there are two water distribution backflushing pipes, which extend radially into the tank body and are connected to the water distribution pipes on both sides. Each water distribution backflushing pipe is connected to the same number of water distribution pipes.

[0014] Preferably, a water inlet detection component is provided at the outlet of the feed pump, and the water inlet detection component is used to detect the flow rate at the outlet of the feed pump.

[0015] Preferably, the outlet of the circulating pump is connected to the main inlet pipe, and a circulating water detection component is provided between the outlet of the circulating pump and the main inlet pipe. The circulating water detection component is used to detect the flow rate, pH, temperature and dissolved oxygen of the liquid pumped out by the circulating pump.

[0016] Preferably, the three-phase separator is provided with an exhaust pipe at the top, the exhaust pipe extends through the tank to the outside, and a pressure detection component is provided at the exhaust pipe for detecting the pressure of the exhaust pipe.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] This invention adjusts the water supply pipeline structure to ensure that each water distribution pipe is connected to the same number of water distribution nozzles, thereby ensuring that the water pressure of each nozzle is the same and that the newly introduced sewage is evenly mixed with the sewage in the tank. A circulating water detection component is used to monitor the water quality in the circulating water pipe, facilitating control of the power of the feed pump and circulation pump, avoiding sludge runoff caused by fluctuations in the influent volume, and allowing staff to easily adjust the nitrogen content of the newly injected sewage, ensuring stable water quality and reducing water quality shock. By installing a backflushing pipe with a dual-path configuration, the backflushing effect on the pipeline is improved, preventing pipe blockage. Attached Figure Description

[0019] Figure 1 This is a first schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a second schematic diagram of the overall structure of this utility model;

[0021] Figure 3 This is a front view schematic diagram of the entire utility model;

[0022] Figure 4This is a cross-sectional schematic diagram of the overall structure of this utility model.

[0023] The meanings of the labels in the diagram are as follows:

[0024] 1. Reaction vessel; 11. Vessel body; 12. Sludge inlet; 13. Sludge outlet; 14. Sampling port;

[0025] 2. Water distribution assembly; 21. Feed pump; 22. Main water inlet pipe; 23. Water distribution pipe; 24. Water distribution nozzle; 25. Water distribution backwash pipe; 26. Water inlet detection assembly;

[0026] 3. Circulation components; 31. Circulation pump; 32. Circulation water pipe; 33. Circulation backflushing pipe; 34. Circulation water detection components;

[0027] 4. Three-phase separation assembly; 41. Three-phase separator; 42. Drain pipe; 43. Exhaust pipe; 44. Air pressure detection assembly; 45. Separator flushing pipe. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] Example 1:

[0030] Please see Figure 1-4 The present invention will describe the above technical solution in detail through the following embodiments:

[0031] An improved anaerobic ammonia oxidation reactor includes:

[0032] The reaction tank 1 includes a tank body 11, and the tank body 11 is provided with a water distribution assembly 2, a circulation assembly 3 and a three-phase separation assembly 4 from bottom to top.

[0033] The reaction vessel 1 can be made of steel or fiberglass.

[0034] The tank body 11 is cylindrical in shape with a height-to-diameter ratio of 3:1. A mud inlet 12 and a mud outlet 13 are symmetrically welded on one side of the bottom of the tank body 11, and a sampling port 14 is welded in the middle of the tank body 11.

[0035] The tank body 11 with a height-to-diameter ratio of 3:1 can increase the gas-liquid contact time, and the sludge can be agitated during the rising of bubbles.

[0036] The sludge inlet 12 is used to inject sludge into the reaction tank 1, and the sludge outlet 13 is used to discharge sludge during maintenance. The sampling port 14 is used to take samples from the middle of the reaction tank 1 to observe the expansion of the sludge inside the reaction tank 1.

[0037] The water distribution assembly 2 includes a water supply pipeline, which supplies water to the feed pump 21 to evenly inject wastewater into the tank 11. The water supply pipeline is connected to a water distribution backwash pipe 25, which is used to clean the water supply pipeline.

[0038] The feed pump 21 is used to pump wastewater into the water supply pipeline. The wastewater needs to be aerated before entering the feed pump 21.

[0039] A check valve should be installed at the inlet of the water distribution backwash pipe 25 to reduce mud runoff.

[0040] The water supply pipeline includes a main water inlet pipe 22, and several water distribution pipes 23 are welded in parallel to the main water inlet pipe 22. The water distribution pipes 23 extend into the tank body 11 and are connected to several water distribution nozzles 24. The number of water distribution nozzles 24 on each water distribution pipe 23 is the same.

[0041] A separate control valve should be installed at the end of the water distribution pipe 23. The control valve can be a known solenoid valve.

[0042] The parallel connection of the water distribution pipes 23 ensures that the water pressure in each water distribution pipe 23 is as equal as possible. The number of water distribution nozzles 24 on each water distribution pipe 23 is the same, which ensures that the water pressure and water velocity of each water distribution nozzle 24 are equal, so that the water flow upward speed is as equal as possible, reducing the fluctuation of water quality in the tank 11.

[0043] There are two water distribution backwash pipes 25. The two water distribution backwash pipes 25 extend radially into the tank body 11 and are connected to the water distribution pipes 23 on both sides. The number of water distribution pipes 23 connected to each water distribution backwash pipe 25 is the same.

[0044] The water backwash pipe 25 can inject clean water into the water distribution pipe 23 to flush the inside of the water distribution pipe 23, thereby preventing blockage inside the water distribution pipe 23. Dual-path flushing can flush one side of the water backwash pipe 25 separately. With the same pressure inside the water backwash pipe 25, fewer branch lines can increase the clean water pressure entering the water distribution pipe 23 and improve the flushing effect.

[0045] The feed pump 21 is equipped with a water inlet detection component 26 at the outlet, which is used to detect the flow rate at the outlet of the feed pump 21.

[0046] The inlet water detection component 26 uses a known flow transmitter. While detecting the flow rate at the outlet of the feed pump 21, the inlet water detection component 26 can also send the detection data to external devices.

[0047] The circulation component 3 includes a circulation pump 31, which draws water from inside the tank 11 through a circulation water pipe 32 and injects it into the water supply pipeline. The circulation water pipe 32 is connected to a circulation backflushing pipe 33, which is used to clean the circulation water pipe 32.

[0048] The circulating water pipe 32 is located in the upper part of the tank 11. The area between the circulating water pipe 32 and the water distribution pipe 23 is the sludge expansion bed area, where the sludge is fully mixed and reacted with the wastewater.

[0049] When the circulating pump 31 is working, it can extract the sludge and wastewater from the top of the sludge expansion bed zone and pump them into the water supply pipeline, reducing the amount of sludge rising with the wastewater and reducing sludge runoff. At the same time, it increases the reaction time of the wastewater and improves the treatment effect.

[0050] The outlet of the circulating pump 31 is connected to the main inlet pipe 22. A circulating water detection component 34 is provided between the outlet of the circulating pump 31 and the main inlet pipe 22. The circulating water detection component 34 is used to detect the flow rate, pH, temperature and dissolved oxygen of the liquid pumped out by the circulating pump 31.

[0051] The circulating water detection component 34 includes a flow transmitter, an acid / alkali / temperature transmitter, and a dissolved oxygen transmitter. By detecting relevant parameters of the water at the outlet of the circulating pump 31, the wastewater quality at the top of the sludge expansion bed zone can be obtained, facilitating the assessment of treatment effectiveness. Furthermore, the data detected by the circulating water detection component 34, in conjunction with the data detected by the influent detection component 26, provides a basis for adjusting the power of the feed pump 21 and the circulating pump 31, facilitating automatic control of the feed pump 21 and the circulating pump 31.

[0052] The three-phase separation assembly 4 includes a three-phase separator 41, which is used to separate sludge, biogas and water. A separator flushing pipe 45 is provided at the three-phase separator 41 for cleaning the three-phase separator 41.

[0053] The baffle angle of the three-phase separator 41 is set to 60°. The separator flushing pipe 45 is installed parallel above the baffles of the three-phase separator 41, and the outlet of the separator flushing pipe 45 is perpendicular to the baffles of the three-phase separator 41.

[0054] The separator flushing pipe 45 is used to spray clean water to flush the three-phase separator 41 and reduce sludge runoff.

[0055] The three-phase separator 41 is provided with an exhaust pipe 43 at the top. The exhaust pipe 43 extends through the tank 11 to the outside. A pressure detection component 44 is provided at the exhaust pipe 43. The pressure detection component 44 is used to detect the pressure of the exhaust pipe 43.

[0056] At the top center of the three-phase separator 41, a horizontal drain pipe 42 is provided. The drain pipe 42 is used to discharge the treated clean water, and the exhaust pipe 43 is used to discharge the biogas and other gases generated during the wastewater treatment process.

[0057] The data detected by the air pressure detection component 44 is used to provide a basis for subsequent biogas compression processing.

[0058] Working principle:

[0059] The feed pump 21 is controlled to pump the aerated wastewater into the main inlet pipe 22, then through the distribution pipe 23, and finally sprayed out from the distribution nozzle 24 into the tank 11.

[0060] The parallel connection of the water distribution pipes 23 ensures that the water pressure in each water distribution pipe 23 is as equal as possible. The number of water distribution nozzles 24 on each water distribution pipe 23 is the same, which ensures that the water pressure and water velocity of each water distribution nozzle 24 are equal, so that the water flow upward speed is as equal as possible, reducing the fluctuation of water quality in the tank 11.

[0061] The circulating pump 31 is controlled to extract the sludge and wastewater from the top of the sludge expansion bed area and then pump them into the water supply pipeline, thereby reducing the amount of sludge that rises with the wastewater and reducing sludge runoff.

[0062] The circulating water detection component 34 at the outlet of the circulating pump 31 can detect the flow rate, pH, temperature, and dissolved oxygen content of the liquid pumped out by the circulating pump 31. This is used to determine the wastewater quality at the top of the sludge expansion bed zone, thus facilitating the assessment of treatment effectiveness. Simultaneously, the data detected by the circulating water detection component 34, in conjunction with the data detected by the inlet water detection component 26, provides a basis for adjusting the power of the feed pump 21 and the circulating pump 31, facilitating automatic control of the feed pump 21 and the circulating pump 31.

[0063] Regular sampling at sampling port 14 can determine the sludge bulking.

[0064] Regularly control the operation of the water distribution backwash pipe 25, the circulating backwash pipe 33 and the separator flushing pipe 45 to clean the water distribution pipe 23, the circulating water pipe 32 and the three-phase separator 41 respectively, to avoid pipe blockage and mud leakage.

[0065] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. An improved anaerobic ammonia oxidation reactor, characterized in that, include: The reaction tank (1) includes a tank body (11), which is provided with a water distribution assembly (2), a circulation assembly (3) and a three-phase separation assembly (4) from bottom to top. The water distribution assembly (2) includes a water supply pipeline, which supplies water from a feed pump (21) to uniformly inject wastewater into the tank (11). The water supply pipeline is connected to a water distribution backwash pipe (25), which is used to clean the water supply pipeline. The circulation component (3) includes a circulation pump (31), which draws water from inside the tank (11) through a circulation water pipe (32) and injects it into the water supply pipeline. The circulation water pipe (32) is connected to a circulation backflushing pipe (33), which is used to clean the circulation water pipe (32). The three-phase separation assembly (4) includes a three-phase separator (41) for separating sludge, biogas and water. A separator flushing pipe (45) is provided at the three-phase separator (41) for cleaning the three-phase separator (41).

2. The improved anaerobic ammonia oxidation reactor as described in claim 1, characterized in that: The tank (11) is cylindrical in shape with a height-to-diameter ratio of 3:

1. The bottom of the tank (11) is symmetrically provided with a mud inlet (12) and a mud outlet (13). The middle part of the tank (11) is provided with a sampling port (14).

3. The improved anaerobic ammonia oxidation reactor as described in claim 1, characterized in that: The water supply pipeline includes a main water inlet pipe (22), which is connected to several water distribution pipes (23). The water distribution pipes (23) extend into the tank body (11) and are connected to several water distribution nozzles (24). The number of water distribution nozzles (24) on each water distribution pipe (23) is the same.

4. An improved anaerobic ammonia oxidation reactor as described in claim 3, characterized in that: There are two water distribution backflushing pipes (25). The two water distribution backflushing pipes (25) extend radially into the tank body (11) and are connected to the water distribution pipes (23) on both sides. The number of water distribution pipes (23) connected to each water distribution backflushing pipe (25) is the same.

5. An improved anaerobic ammonia oxidation reactor as described in claim 1, characterized in that: The feed pump (21) is equipped with a water inlet detection component (26) at the outlet, which is used to detect the flow rate at the outlet of the feed pump (21).

6. An improved anaerobic ammonia oxidation reactor as described in claim 3, characterized in that: The outlet of the circulating pump (31) is connected to the main inlet pipe (22). A circulating water detection component (34) is provided between the outlet of the circulating pump (31) and the main inlet pipe (22). The circulating water detection component (34) is used to detect the flow rate, pH, temperature and dissolved oxygen of the liquid pumped out by the circulating pump (31).

7. An improved anaerobic ammonia oxidation reactor as described in claim 1, characterized in that: The three-phase separator (41) is provided with an exhaust pipe (43) at the top. The exhaust pipe (43) extends through the tank (11) to the outside. A pressure detection component (44) is provided at the exhaust pipe (43). The pressure detection component (44) is used to detect the pressure of the exhaust pipe (43).

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