One-stage shortcut nitrification-anaerobic ammonia oxidation denitrification device

Abstract

The utility model discloses a one-stage short-cut nitrification-anaerobic ammonia oxidation denitrification device, which comprises a denitrification device main body, a water inlet, a short-cut nitrification zone and an anaerobic ammonia oxidation zone, the short-cut nitrification zone is arranged on one side in the denitrification device main body, the anaerobic ammonia oxidation zone is arranged on the other side in the denitrification device main body, and the short-cut nitrification zone is arranged on the other side in the denitrification device main body. A heating cavity is formed in the outer side of the anaerobic ammonia oxidation area, a resistance ring is arranged in the center of the interior of the heating cavity, heat conduction rings are evenly distributed on the two sides of the interior of the heating cavity, the heat conduction rings are evenly connected with the resistance ring through heat conduction rods, and a temperature sensor is arranged at the top end of the interior of the anaerobic ammonia oxidation area. By installing the denitrification device main body, the short-cut nitrification area, the anaerobic ammonia oxidation area, the heating cavity, the resistance ring, the heat conducting rod, the heat conducting ring, the connecting block and the temperature sensor, the temperature in the anaerobic ammonia oxidation area can be controlled within a proper temperature range, and ammonia nitrogen and nitrite nitrogen can be converted into nitrogen more effectively.

Description

Technical Field

[0001] This utility model relates to the field of wastewater denitrification technology, specifically a one-stage short-cut nitrification-anaerobic ammonia oxidation denitrification device. Background Technology

[0002] The one-stage short-cut nitrification-anaerobic ammonia oxidation denitrification device is a highly efficient wastewater denitrification treatment system. Its core lies in the combination of short-cut nitrification and anaerobic ammonia oxidation. These two processes are completed in the same device. By creating a micro-aerobic environment, nitrifying bacteria partially oxidize ammonia nitrogen into nitrite, while consuming oxygen to create the anaerobic environment required for the anaerobic ammonia oxidation process. The generated nitrite and the remaining ammonia nitrogen are then removed through the anaerobic ammonia oxidation reaction.

[0003] For example, the ammonia nitrogen wastewater biochemical denitrification device and process that combines short-cut nitrification and anaerobic ammonia oxidation disclosed in patent number CN106966500A first achieves efficient and stable nitrite reaction and nitrite nitrogen accumulation in ammonia nitrogen wastewater through short-cut nitrification reaction, and then carries out anaerobic ammonia oxidation reaction to achieve the goal of wastewater denitrification. This can reduce the aeration required for nitrification reaction and reduce energy consumption. However, the optimal growth temperature of anaerobic ammonia oxidizing bacteria is usually between 30 and 35°C. Too low or too high a temperature will lead to a decrease in their activity or even complete inhibition. This scheme is not conducive to controlling the reaction temperature, thus affecting the entire denitrification process. Utility Model Content

[0004] The purpose of this invention is to provide a one-stage short-range nitrification-anaerobic ammonia oxidation denitrification device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a one-stage short-cut nitrification-anaerobic ammonia oxidation denitrification device, comprising a denitrification device body, an inlet, a short-cut nitrification zone, and an anaerobic ammonia oxidation zone. A short-cut nitrification zone is located on one side of the denitrification device body, and a packing layer is provided in the center of the short-cut nitrification zone via a support plate. An inlet is located at the top of one side of the denitrification device body, and one end of the inlet is connected to the short-cut nitrification zone. An aeration pipe is located at the bottom of the short-cut nitrification zone. An anaerobic ammonia oxidation zone is located on the other side of the main body of the denitrification device. The anaerobic ammonia oxidation zone is connected to the short-cut nitrification zone via a water pipe. A heating chamber is located on the outside of the anaerobic ammonia oxidation zone. A resistance ring is located in the center of the heating chamber. Heat-conducting rings are evenly distributed on both sides of the heating chamber. The heat-conducting rings are evenly connected to the resistance rings via heat-conducting rods. A temperature sensor is located at the top of the anaerobic ammonia oxidation zone. An outlet pipe is located at the top of the main body of the denitrification device on the side away from the inlet.

[0006] Preferably, an aerator is provided at the bottom of one side of the denitrification device, and the aerator is connected to an aeration pipe.

[0007] Preferably, a filter screen is provided on one side inside the water inlet, and slots are evenly provided on the inner wall of the water inlet, and blocks are evenly provided on the side of the filter screen near the slots.

[0008] Preferably, the side of the heat-conducting ring closest to the anaerobic ammonia oxidation zone is uniformly connected to the anaerobic ammonia oxidation zone via connecting blocks, and the connecting blocks are all made of copper alloy.

[0009] Preferably, a roller is provided at the center of the anaerobic ammonia oxidation zone, and a stirring element is uniformly provided at the top of the roller, while a spiral blade is provided at the bottom of the roller.

[0010] Preferably, a drive motor is fixed at one end of the top of the denitrification device body, and the output end of the drive motor is connected to the roller.

[0011] Preferably, the top of the aeration pipe is uniformly provided with aeration heads, and each aeration head is provided with a membrane.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: This one-stage short-cut nitrification-anaerobic ammonia oxidation denitrification device consists of a denitrification device body, a short-cut nitrification zone, an anaerobic ammonia oxidation zone, a heating chamber, a resistance ring, a heat-conducting rod, a heat-conducting ring, a connecting block, and a temperature sensor. Wastewater first enters the short-cut nitrification zone within the denitrification device body. Under dissolved oxygen conditions, ammonia nitrogen in the wastewater undergoes a nitrite reaction with ammonia-oxidizing bacteria in the nitrifying bacterial biofilm. The reacted wastewater then enters the anaerobic ammonia oxidation zone, where it comes into contact with the anaerobic ammonia-oxidizing bacterial sludge. The ammonia nitrogen and nitrite in the wastewater are then neutralized. Nitrogen reacts with anaerobic ammonia oxidizing bacteria in an anaerobic ammonia oxidation reaction, thereby achieving biochemical denitrification of ammonia nitrogen wastewater. During the reaction, the resistance ring in the heating chamber is energized and heats up. The heat is evenly transferred to the heat-conducting ring through the heat-conducting rod. The side of the heat-conducting ring closest to the anaerobic ammonia oxidation zone is evenly connected to the anaerobic ammonia oxidation zone through a connecting block. The connecting block is made of copper alloy to better transfer heat. With the help of a temperature sensor, the temperature in the anaerobic ammonia oxidation zone can be controlled within a suitable temperature range, so that the anaerobic ammonia oxidizing bacteria can maintain high metabolic activity, thereby effectively converting ammonia nitrogen and nitrite nitrogen into nitrogen gas. Attached Figure Description

[0013] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a front view cross-sectional structural diagram of the present invention;

[0015] Figure 2 This is a schematic diagram of the water inlet structure of this utility model;

[0016] Figure 3 This is a top view schematic diagram of the aeration pipe structure of this utility model;

[0017] Figure 4 This is a top view cross-sectional structural diagram of the heating cavity of this utility model;

[0018] Figure 5 This is a schematic diagram of the roller structure of this utility model.

[0019] In the diagram: 1. Main body of the denitrification device; 2. Aerator; 3. Support plate; 4. Packing layer; 5. Inlet; 6. Short-cut nitrification zone; 7. Water guide pipe; 8. Roller; 9. Drive motor; 10. Temperature sensor; 11. Outlet pipe; 12. Heating chamber; 13. Heat-conducting rod; 14. Resistance ring; 15. Heat-conducting ring; 16. Anaerobic ammonia oxidation zone; 17. Aeration pipe; 18. Aeration head; 19. Locking block; 20. Filter screen; 21. Locking groove; 22. Membrane; 23. Connecting block; 24. Agitator; 25. Spiral blade. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0021] Please see Figure 1-5 An embodiment of this utility model is provided: a one-stage short-cut nitrification-anaerobic ammonia oxidation denitrification device, including a denitrification device body 1, an inlet 5, a short-cut nitrification zone 6 and an anaerobic ammonia oxidation zone 16. The short-cut nitrification zone 6 is provided on one side inside the denitrification device body 1, and a packing layer 4 is provided in the center of the short-cut nitrification zone 6 through a support plate 3. The inlet 5 is provided at the top of one side of the denitrification device body 1, and one end of the inlet 5 is connected to the short-cut nitrification zone 6.

[0022] A filter screen 20 is installed on one side inside the inlet 5. Wastewater first enters the main body 1 of the denitrification device through the inlet 5, and the filter screen 20 intercepts the impurities in the wastewater.

[0023] The inner wall of the inlet 5 is evenly provided with slots 21, and the filter screen 20 is evenly provided with blocks 19 on the side near the slots 21, which facilitates the replacement of the filter screen 20.

[0024] An aeration pipe 17 is installed at the bottom of the short-cut nitrification zone 6. An aerator 2 is installed at the bottom of one side of the denitrification device body 1, and the aerator 2 is connected to the aeration pipe 17. Aeration heads 18 are evenly arranged at the top of the aeration pipe 17.

[0025] After the wastewater enters the short-cut nitrification zone 6, it comes into contact with the packing layer 4 on which the nitrifying bacteria biofilm is attached. At the same time, the aerator 2 introduces external oxygen into the aeration pipe 17 and sprays it out through the aeration head 18 to create dissolved oxygen conditions. The ammonia nitrogen in the wastewater undergoes a nitrification reaction with the ammonia-oxidizing bacteria in the nitrifying bacteria biofilm. Each aeration head 18 is equipped with a membrane 22. The membrane 22 adopts a diamond structure, which helps to increase the gas-liquid contact area, so that the oxygen in the air can dissolve more effectively in the water.

[0026] An anaerobic ammonia oxidation zone 16 is provided on the other side of the main body 1 of the denitrification device, and the anaerobic ammonia oxidation zone 16 is connected to the short-cut nitrification zone 6 through a water pipe 7. A roller 8 is provided in the center of the anaerobic ammonia oxidation zone 16, and a stirring element 24 is evenly provided at the top of the roller 8.

[0027] A drive motor 9 is fixed at one end of the top of the main body 1 of the denitrification device, and the output end of the drive motor 9 is connected to the roller 8;

[0028] After the reaction in the short-cut nitrification zone 6, the wastewater enters the anaerobic ammonia oxidation zone 16 and comes into contact with the anaerobic ammonia oxidation bacteria sludge in the anaerobic ammonia oxidation zone 16. The ammonia nitrogen and nitrite nitrogen in the wastewater undergo anaerobic ammonia oxidation reaction with the anaerobic ammonia oxidation bacteria, thereby achieving the biochemical denitrification treatment of ammonia nitrogen wastewater. During the reaction, the roller 8 and the agitator 24 are rotated by the drive motor 9, which can increase the contact area between the wastewater and the sludge and improve the reaction effect.

[0029] The bottom end of the roller 8 is provided with a spiral blade 25. When the spiral blade 25 rotates, it can continuously turn the settled sludge upward and improve the contact effect with the sewage.

[0030] A heating chamber 12 is provided on the outside of the anaerobic ammonia oxidation zone 16, and a resistance ring 14 is provided at the center of the heating chamber 12. Heat-conducting rings 15 are evenly distributed on both sides of the heating chamber 12, and the heat-conducting rings 15 are evenly connected to the resistance rings 14 through heat-conducting rods 13. A temperature sensor 10 is provided at the top of the anaerobic ammonia oxidation zone 16.

[0031] When the resistance ring 14 is energized, it generates heat. The heat is evenly transferred to the heat-conducting ring 15 through the heat-conducting rod 13. The side of the heat-conducting ring 15 closest to the anaerobic ammonia oxidation zone 16 is evenly connected to the anaerobic ammonia oxidation zone 16 through the connecting block 23. The connecting block 23 is made of copper alloy material to better transfer heat.

[0032] Temperature sensor 10 senses the temperature in anaerobic ammonia oxidation zone 16. With the help of an external controller, the temperature in anaerobic ammonia oxidation zone 16 can be controlled within a suitable temperature range, so that anaerobic ammonia oxidizing bacteria can maintain high metabolic activity and effectively convert ammonia nitrogen and nitrite nitrogen into nitrogen gas.

[0033] The denitrification device body 1 has an outlet pipe 11 at the top of the side away from the inlet 5, and the denitrified water is discharged from the outlet 11.

[0034] The specific models and specifications of the drive motor 9, aerator 2, resistor ring 14 and temperature sensor 10 need to be determined by selection calculation based on the specifications and parameters of the device. The selection calculation method is existing technology, so it will not be described in detail.

[0035] Working Principle: In this embodiment, wastewater first enters the main body 1 of the denitrification device through inlet 5. A filter screen 20 is installed inside inlet 5 to intercept impurities in the wastewater. The wastewater first enters the short-cut nitrification zone 6, contacting the packing layer 4 with the attached nitrifying bacterial biofilm. Simultaneously, the aerator 2 introduces external oxygen into the aeration pipe 17 and sprays it out through the aeration head 18, creating dissolved oxygen conditions. Ammonia nitrogen in the wastewater undergoes a nitrification reaction with ammonia-oxidizing bacteria in the nitrifying bacterial biofilm. The reacted wastewater then enters the anaerobic ammonia oxidation zone 16, contacting the anaerobic ammonia-oxidizing bacterial sludge in the anaerobic ammonia oxidation zone 16. Ammonia nitrogen and nitrite nitrogen in the wastewater undergo an anaerobic ammonia oxidation reaction with the anaerobic ammonia-oxidizing bacteria, thereby achieving biochemical denitrification of ammonia nitrogen wastewater. During the reaction, the drive motor 9 drives... The rotation of the moving roller 8 and the stirring component 24 increases the contact area between the sewage and sludge, improving the reaction effect. At the same time, the resistance ring 14 in the heating chamber 12 is energized and generates heat. The heat is evenly transferred to the heat-conducting ring 15 through the heat-conducting rod 13. The side of the heat-conducting ring 15 closest to the anaerobic ammonia oxidation zone 16 is evenly connected to the anaerobic ammonia oxidation zone 16 through the connecting block 23. The connecting block 23 is made of copper alloy to better transfer heat. Meanwhile, the temperature sensor 10 senses the temperature in the anaerobic ammonia oxidation zone 16. With the help of an external controller, the temperature in the anaerobic ammonia oxidation zone 16 can be controlled within a suitable temperature range, so that the anaerobic ammonia oxidizing bacteria can maintain a high metabolic activity, thereby effectively converting ammonia nitrogen and nitrite nitrogen into nitrogen gas. The denitrified water is discharged from the outlet 11.

[0036] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A one-stage short-cut nitrification-anaerobic ammonium oxidation denitrification unit, characterized in that, The device includes a denitrification unit (1), an inlet (5), a short-cut nitrification zone (6), and an anaerobic ammonia oxidation zone (16). A short-cut nitrification zone (6) is located on one side of the denitrification unit (1), and a packing layer (4) is provided in the center of the short-cut nitrification zone (6) via a support plate (3). An inlet (5) is located at the top of one side of the denitrification unit (1), and one end of the inlet (5) is connected to the short-cut nitrification zone (6). An aeration pipe (17) is located at the bottom of the short-cut nitrification zone (6). An anaerobic ammonia oxidation zone (16) is located on the other side of the denitrification unit (1). The anaerobic ammonia oxidation zone (16) and the short-cut nitrification zone (6) are connected by a water pipe (7). A heating chamber (12) is provided on the outside of the anaerobic ammonia oxidation zone (16), and a resistance ring (14) is provided in the center of the heating chamber (12). Heat-conducting rings (15) are evenly distributed on both sides of the heating chamber (12), and the heat-conducting rings (15) are evenly connected to the resistance rings (14) by heat-conducting rods (13). A temperature sensor (10) is provided at the top of the anaerobic ammonia oxidation zone (16), and an outlet pipe (11) is provided at the top of the main body (1) of the denitrification device away from the inlet (5).

2. The one-stage short-cut nitrification-anaerobic ammonium oxidation denitrification device according to claim 1, characterized in that: An aerator (2) is provided at the bottom of one side of the main body (1) of the denitrification device, and the aerator (2) is connected to the aeration pipe (17).

3. The one-stage short-cut nitrification-anaerobic ammonium oxidation denitrification device according to claim 1, characterized in that: A filter screen (20) is provided on one side inside the water inlet (5), and slots (21) are evenly provided on the inner wall of the water inlet (5). A block (19) is evenly provided on the side of the filter screen (20) near the slot (21).

4. The one-stage short-cut nitrification-anaerobic ammonium oxidation denitrification device according to claim 1, characterized in that: The heat-conducting ring (15) is uniformly connected to the anaerobic ammonia oxidation zone (16) on the side near the anaerobic ammonia oxidation zone (16) through connecting blocks (23), and the connecting blocks (23) are all made of copper alloy.

5. The one-stage short-cut nitrification-anaerobic ammonium oxidation denitrification device according to claim 1, characterized in that: A roller (8) is provided at the center of the anaerobic ammonia oxidation zone (16), and a stirring element (24) is uniformly provided at the top of the roller (8), and a spiral blade (25) is provided at the bottom of the roller (8).

6. The one-stage short-cut nitrification-anaerobic ammonium oxidation denitrification device according to claim 5, characterized in that: A drive motor (9) is fixed at one end of the top of the main body (1) of the denitrification device, and the output end of the drive motor (9) is connected to the roller (8).

7. The one-stage short-cut nitrification-anaerobic ammonium oxidation denitrification device according to claim 1, characterized in that: The top of the aeration pipe (17) is uniformly provided with aeration heads (18), and each aeration head (18) is provided with a membrane (22).

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