A system for treating nitrogen-containing wastewater

Abstract

The application discloses a kind of for containing nitrogen wastewater treatment system of iron oxide, it is related to wastewater treatment technical field, including wastewater injection port, the outside of wastewater injection port is provided with blow-off reaction kettle, by the cooperation of blow-off reaction kettle, air distributor, aeration denitrification filter box, micro-nano bubble generator, utilize air distributor and aeration inlet pipe and send heated nitrogen removal to aeration denitrification filter box, under the action of aeration denitrification filter box, carry out denitrification operation, then when PH sensor sequentially accurately detects that the acid value of wastewater in blow-off reaction kettle and treatment pool is too high, send electric signal to liquid alkali adding device, so that liquid alkali adding device respectively according to the acidity of wastewater in blow-off reaction kettle and treatment pool, carry out alkaline addition, form intermittent accurate regulation of the PH of wastewater in blow-off reaction kettle and treatment pool, so that wastewater overall forms balance, reduce the nitrogen content of wastewater treatment, not easy in wastewater treatment Cause pollution.

Description

Technical Field

[0001] This invention relates to the field of wastewater treatment technology, specifically to a system for treating nitrogen-containing wastewater. Background Technology

[0002] Wastewater transfer stations are an important component of urban domestic wastewater treatment. The wastewater from these stations is highly polluting, and direct discharge into the municipal sewer network has a significant impact on wastewater treatment plants. Large volumes of wastewater can disrupt the normal operation of these plants. Wastewater transfer stations mainly handle leachate, flushing wastewater, and domestic wastewater, characterized by high pollutant concentrations, complex pollutant composition, large water quality variations, and high treatment difficulty. The treatment of this type of wastewater often employs a combination of anaerobic and aerobic processes. Anaerobic treatment first breaks down large organic molecules into smaller molecules, followed by aerobic treatment to ensure efficient decomposition by aerobic bacteria.

[0003] However, in the current technology, the equipment used to treat nitrogen-containing wastewater containing iron oxide is expensive and time-consuming. The treatment and discharge effect of nitrogen-containing wastewater is poor, and the discharged nitrogen gas is only transferred to the sewage transfer station area, causing secondary pollution. This is insufficient to meet the needs of existing enterprises for nitrogen-containing wastewater treatment. Therefore, it is necessary to propose a new type of nitrogen-containing wastewater treatment system. Summary of the Invention

[0004] The purpose of this invention is to provide a nitrogen-containing wastewater treatment system to solve the problems mentioned in the background art, such as poor treatment and discharge effects of nitrogen-containing wastewater, where the discharged nitrogen gas is merely transferred to the sewage transfer station area, causing secondary pollution, and failing to meet the needs of existing enterprises for nitrogen-containing wastewater treatment.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a nitrogen-containing wastewater treatment system, comprising a wastewater inlet, a stripping reactor disposed outside the wastewater inlet, a Tesla tube connected to the top side surface of the stripping reactor, the side end of the Tesla tube being configured as a suspension inlet, a treatment tank disposed outside the suspension inlet, an air distributor installed on the top of the stripping reactor, and a heating pipe connected to the inside of the stripping reactor via a pipe passing through the air distributor, and liquid alkali additives installed at the bottom of both the stripping reactor and the treatment tank, two sets of pH sensors installed on the surface of the liquid alkali additives, and a nitrogen sensor connected to the side end of the stripping reactor, wherein the nitrogen... A gas sensor is connected to a gas delivery pipe at one end, which is connected to the treatment tank. A delivery pump is installed on the side surface of the stripping reactor, and a connecting pipe is connected to the side end of the delivery pump. A suction pump is connected to the side end of the connecting pipe, and a mixing pipe is connected to the side end of the suction pump. A suspension delivery pump is connected to the side end of the mixing pipe. An aeration pipeline is connected to the back surface of the stripping reactor and the treatment tank. The bottom end of the aeration pipeline is connected to an aeration denitrification filter box. The aeration pipeline is configured as an aeration inlet pipe and an aeration outlet pipe. The aeration inlet pipe is connected to the stripping reactor, and the aeration outlet pipe is connected to the treatment tank. A micro / nano bubble generator is installed inside the treatment tank.

[0006] Preferably, a drain pipe is connected to the top of the suspension transfer pump, and a circulation pump is installed at the side end of the drain pipe.

[0007] Preferably, a check valve is installed on the side end of the circulating pump, and the side end of the circulating pump is connected to a wastewater treatment pipe, wherein the wastewater treatment pipe is connected to a municipal sewage treatment plant.

[0008] Preferably, a flow controller is connected to the top of the circulating pump, a circulation pipe is connected to the outside of the flow controller, a sieve assembly is connected to the side end of the circulation pipe, and an annular evaporation chamber is connected to the side end of the sieve assembly through a pipeline.

[0009] Preferably, the filtration assembly includes a corrosion-resistant housing, a belt-driven motor is installed at the bottom of the interior of the corrosion-resistant housing, a belt structure is sleeved on the outside of the output shaft of the belt-driven motor, and a biological organic bacteria rotor is sleeved on the other side of the belt structure.

[0010] Preferably, a liquid level sensor is installed on the inner wall of the anti-corrosion shell, and a rotating shaft is rotatably connected to the side end of the biological organic bacteria rotor. The side end of the rotating shaft is installed on the back surface of the anti-corrosion shell through a bearing seat. The belt drive motor, the belt structure, the rotating shaft and the bearing seat are all protected against corrosion to prevent corrosion of the untreated wastewater transported through the circulation pipe. Furthermore, a support base is installed on the outside of the anti-corrosion shell and the annular evaporation chamber.

[0011] Preferably, both the stripping reactor and the treatment tank are fitted with stabilizing frames on their outer periphery, and the stabilizing frames are fastened to the aeration denitrification filter box by multiple sets of fastening bolts.

[0012] Preferably, a low-temperature cooling infusion pipe is connected to the side end of the annular evaporation chamber, and a dosing tank is connected to the right end of the low-temperature cooling infusion pipe.

[0013] Preferably, the top of the dosing tank is provided with a dosing hole, and a drug delivery hose is connected to the top surface of the dosing hole.

[0014] Preferably, a return pipe is connected to the side wall surface of the dosing tank, and the return pipe is connected to the stripping reactor.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] 1. In this invention, through the combined action of a stripping reactor, an air distributor, an aerated denitrification filter box, a micro-nano bubble generator, a liquid alkali additive, and a pH sensor, the heated nitrogen-depleting agent is blown into the aeration pipeline via the air blowing pipe of the air distributor. Then, the heated nitrogen-depleting agent is transported to the aerated denitrification filter box via the aeration inlet pipe. Under the action of the aerated denitrification filter box, denitrification is carried out. Subsequently, when the acid value of the wastewater inside the stripping reactor and the treatment tank is accurately detected to be too high, an electrical signal is sent to the liquid alkali additive. The liquid alkali additive then adds alkali according to the acidity of the wastewater inside the stripping reactor and the treatment tank, forming an intermittent and precise adjustment of the pH of the wastewater inside the stripping reactor and the treatment tank. This makes the wastewater as a whole reach a balance, reduces the nitrogen content of the wastewater, and is less likely to cause pollution in the wastewater treatment process.

[0017] 2. In this invention, with the cooperation of a circulating pump, flow controller, annular evaporation chamber, low-temperature cooling infusion pipe, and dosing tank, when the overall wastewater treatment fails to meet the standards, the circulating pump is started. With the cooperation of a check valve, the treated wastewater that fails to meet the standards is transported to the circulating pipe. With the cooperation of the flow controller, the flow rate of the transported wastewater that fails to meet the standards is controlled to avoid excessive wastewater circulation affecting the wastewater being treated. Then, with the cooperation of the circulating pipe and pipeline, it is transported to the annular evaporation chamber. With the cooperation of the annular evaporation chamber and the low-temperature cooling infusion pipe, the circulating wastewater after screening is evaporated and pressurized. At low temperature, it is liquefied and then transported to the dosing tank to mix with the denitrification agent in the dosing tank. Then, the mixed liquid is transported to the stripping reactor for secondary treatment using a dosing hose. With the cooperation of the return pipe, backflow is avoided to prevent it from affecting the wastewater treatment in the stripping reactor.

[0018] 3. In this invention, with the assistance of a filtration assembly, when the substandard wastewater is transported into the corrosion-resistant housing, the liquid level injected into the housing is detected by a liquid level sensor. When the preset threshold is reached, an electrical signal is sent to the belt drive motor, causing the belt drive motor to rotate and simultaneously rotating the belt structure. At the same time, the biological organic bacteria rotor rotates at a uniform speed with the help of the rotating shaft. The biological organic bacteria inside the rotor trap and adhere to the nitrogen in the substandard wastewater, improving the efficiency of wastewater treatment. This ensures that the overall wastewater treatment structure strictly meets the discharge treatment standards and avoids secondary pollution to the surrounding environment. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the main structure of a nitrogen-containing wastewater treatment system according to the present invention;

[0020] Figure 2 This is a schematic diagram of the structure of a nitrogen-containing wastewater treatment system according to the present invention, viewed from the rear side.

[0021] Figure 3 This is a schematic diagram of the overall structure separation of a nitrogen-containing wastewater treatment system according to the present invention;

[0022] Figure 4 This is a schematic diagram of the structure for installing a circulating pump in a nitrogen-containing wastewater treatment system according to the present invention;

[0023] Figure 5 This is a schematic diagram of the structure of a screening component in a nitrogen-containing wastewater treatment system according to the present invention;

[0024] Figure 6 This is a schematic diagram of the installation structure of a liquid alkali additive and a pH sensor in a nitrogen-containing wastewater treatment system according to the present invention;

[0025] Figure 7 This is a schematic diagram of the pipeline installation in a nitrogen-containing wastewater treatment system according to the present invention.

[0026] In the diagram: 1. Wastewater inlet; 2. Heating pipe; 3. Air distributor; 4. Gas delivery pipe; 5. Suspension transfer pump; 6. Suspension inlet; 7. Treatment tank; 8. Stripping reactor; 9. Stabilizer; 10. Nitrogen sensor; 11. Transfer pump; 12. Connecting pipe; 13. Extraction pump; 14. Mixing pipe; 15. Drainage pipe; 16. Circulation pump; 17. Wastewater treatment pipe; 18. Check valve; 19. Flow controller; 20. Circulation pipe; 21. Filter assembly; 210. Corrosion-resistant shell; 211. Belt drive motor; 212. Belt structure; 213. Biological organic bacteria rotor; 214. Liquid level sensor; 215. Rotary shaft; 22. Support base; 23. Low-temperature cooling infusion pipe; 24. Dosing tank; 25. Dosing port; 26. Infusion hose; 27. Aerated denitrification filter box; 28. Aeration pipeline; 29. ​​Annular evaporation chamber; 30. Liquid alkali additive; 31. pH sensor; 32. Return pipe. Detailed Implementation

[0027] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0028] Example 1: Refer to Figures 1-7As shown: A nitrogen-containing wastewater treatment system includes a wastewater inlet 1, a stripping reactor 8 externally mounted on the wastewater inlet 1, a Tesla tube connected to the top side surface of the stripping reactor 8, a suspension inlet 6 at the side end of the Tesla tube, a treatment tank 7 externally mounted on the suspension inlet 6, an air distributor 3 mounted on the top of the stripping reactor 8, and a heating pipe 2 connected to the inside of the stripping reactor 8 through the air distributor 3 via a pipeline. Liquid alkali additives 30 are installed at the bottom of both the stripping reactor 8 and the treatment tank 7, two sets of pH sensors 31 mounted on the surface of the liquid alkali additives 30, and a nitrogen sensor 10 connected to the side end of the stripping reactor 8. A gas delivery pipe 4 is connected to the treatment tank 7. A delivery pump 11 is installed on the side surface of the stripping reactor 8. A connecting pipe 12 is connected to the side end of the delivery pump 11. A pumping pump 13 is connected to the side end of the connecting pipe 12. A mixing pipe 14 is connected to the side end of the pumping pump 13. A suspension delivery pump 5 is connected to the side end of the mixing pipe 14. An aeration pipe 28 is connected to the back surface of the stripping reactor 8 and the treatment tank 7. The bottom end of the aeration pipe 28 is connected to the aeration denitrification filter box 27. The aeration pipe 28 is configured as an aeration inlet pipe and an aeration outlet pipe. The aeration inlet pipe is connected to the stripping reactor 8, and the aeration outlet pipe is connected to the treatment tank 7. A micro-nano bubble generator is installed inside the treatment tank 7.

[0029] The effect achieved in Embodiment 1 is that when nitrogen-containing wastewater needs to be treated, the wastewater to be treated is transported to the stripping reactor 8 through the wastewater inlet 1. The stripping reactor 8 is used to strip the nitrogen emitted from the wastewater inside. With the cooperation of the air distributor 3, the heating gas transported inside the heating pipe 2 is used to evenly and steadily heat the stripped nitrogen. Then, the heated nitrogen is blown into the aeration pipe 28 through the air blowing pipe of the air distributor 3. Finally, the heated nitrogen is transported to the aeration denitrification system through the aeration inlet pipe. In filter box 27, denitrification is carried out under the action of aerated denitrification filter box 27. Then, the aerated water is transported to treatment tank 7 through aeration inlet pipe. At the same time, under the action of transfer pump 11, the wastewater inside stripping reactor 8 is transported to treatment tank 7 through connecting pipe 12, so that stripping reactor 8 and treatment tank 7 are connected, extending the contact time with air and realizing continuous denitrification reaction. Meanwhile, under the action of micro-nano bubble generator, the wastewater injected into treatment tank 7 is treated, so that the gas generated by micro-nano bubble generator is entrained into the vortex water flow of treatment tank 7, and then the vortex... The bubbles are crushed by the collapse process and then released as microbubbles through the outlet nozzle. The bursting of these microbubbles releases the accumulated chemical energy, purifying the nitrogen in the wastewater. Then, with the assistance of the extraction pump 13, the reaction wastewater in the treatment tank 7 is transported through the mixing pipe 14 to the suspension transfer pump 5 for subsequent operations. Next, under the action of the liquid alkali additive 30 located at the bottom of the stripping reactor 8 and the treatment tank 7, the pH sensor 31 monitors and provides feedback on the wastewater inside the stripping reactor 8 and the treatment tank 7. Using the KNF-101-1 sensor, the measurement range is precise, ranging from 0.00 to 14.00 pH. This allows for accurate detection of excessively high acidity in the wastewater inside the stripping reactor 8 and treatment tank 7. The sensor then sends an electrical signal to the liquid alkali additive 30, which adds alkali according to the acidity of the wastewater in both reactors. This intermittent and precise adjustment of the pH in the wastewater helps to balance the overall wastewater quality, reducing nitrogen content and minimizing pollution during wastewater treatment.

[0030] Example 2: According to Figure 2 , Figure 3 , Figure 4 and Figure 7As shown, a drain pipe 15 is connected to the top of the suspension transfer pump 5. A circulation pump 16 is installed on the side of the drain pipe 15, and a check valve 18 is installed on the side of the circulation pump 16. A wastewater treatment pipe 17 is connected to the side of the circulation pump 16, and the wastewater treatment pipe 17 is connected to a municipal sewage treatment plant. A flow controller 19 is connected to the top of the circulation pump 16, and a circulation pipe 20 is connected to the outside of the flow controller 19. A filter assembly 21 is connected to the side of the circulation pipe 20, and a filter assembly 21 is connected to the side of the filter assembly 21 via a pipe. A stabilizing frame 9 is installed around the outer periphery of the annular evaporation chamber 29, the stripping reactor 8, and the treatment tank 7. The stabilizing frame 9 is fastened to the aeration denitrification filter box 27 by multiple sets of fastening bolts. A low-temperature cooling infusion pipe 23 is connected to the side end of the annular evaporation chamber 29. A dosing tank 24 is connected to the right end of the low-temperature cooling infusion pipe 23. A dosing hole 25 is provided on the top of the dosing tank 24. A dosing hose 26 is connected to the top surface of the dosing hole 25. A return pipe 32 is connected to the side wall surface of the dosing tank 24. The return pipe 32 is connected to the stripping reactor 8.

[0031] The effect achieved in Embodiment 2 is as follows: after the overall wastewater treatment, the suspension transfer pump 5 is started to transport the treated wastewater that meets the standards through the discharge end 15 to the wastewater treatment pipe 17, and then to the municipal sewage treatment plant. When the wastewater treatment does not meet the standards, the circulation pump 16 is started, and with the cooperation of the check valve 18, the treated wastewater that does not meet the standards is transported to the circulation pipe 20. With the cooperation of the flow controller 19, the flow rate of the transported wastewater that does not meet the standards is controlled to avoid the impact of too much wastewater that does not meet the standards on the wastewater being treated. Then, the circulation pipe 20 is... The wastewater is then transported to the filtration assembly 21 for processing. After filtration, it is transported to the annular evaporation chamber 29 via pipeline. In the cooperation of the annular evaporation chamber 29 and the low-temperature cooling liquid delivery pipe 23, the circulating wastewater after filtration is evaporated and pressurized. At low temperature, it is liquefied and then transported to the dosing tank 24 to mix with the denitrification agent in the dosing tank 24. Then, the mixed liquid is transported to the stripping reactor 8 via the delivery hose 26 for secondary treatment. With the cooperation of the return pipe 32, backflow is avoided to prevent it from affecting the wastewater treatment in the stripping reactor 8.

[0032] Example 3: According to Figure 1 , Figure 3 and Figure 5As shown, the screening assembly 21 includes a corrosion-resistant housing 210. A belt drive motor 211 is installed at the bottom of the interior of the corrosion-resistant housing 210. A belt structure 212 is sleeved on the outside of the output shaft of the belt drive motor 211. A biological organic bacteria rotor 213 is sleeved on the other side of the belt structure 212. A liquid level sensor 214 is installed on the inner wall of the corrosion-resistant housing 210. A rotating shaft 215 is rotatably connected to the side end of the biological organic bacteria rotor 213. The side end of the rotating shaft 215 is installed on the back surface of the corrosion-resistant housing 210 through a bearing seat. The belt drive motor 211, belt structure 212, rotating shaft 215 and bearing seat are all corrosion-resistant to prevent corrosion of the untreated wastewater transported through the circulation pipe 20. A support base 22 is installed on the outside of the corrosion-resistant housing 210 and the annular evaporation chamber 29.

[0033] The effect achieved in Embodiment 3 is that when the substandard wastewater is transported into the anti-corrosion housing 210, the liquid level injected into the anti-corrosion housing 210 is detected with the cooperation of the liquid level sensor 214. When the preset threshold is reached, an electrical signal is sent to the belt drive motor 211, causing the belt drive motor 211 to rotate and drive the belt structure 212 to rotate. Simultaneously, the biological organic bacteria wheel 213 rotates at a uniform speed with the cooperation of the rotating shaft 215. The biological organic bacteria inside the biological organic bacteria wheel 213 intercept and adhere to the nitrogen in the substandard wastewater, improving the timeliness of wastewater treatment. This ensures that the overall wastewater treatment structure strictly meets the discharge treatment standards and avoids secondary pollution to the surrounding environment.

[0034] The wiring diagrams for the air distributor 3, suspension transfer pump 5, stripping reactor 8, nitrogen sensor 10, biological organic bacteria rotor 213, liquid level sensor 214, aerated denitrification filter box 27, liquid alkali additive 30, and pH sensor 31 in this invention are common knowledge in the field, and their working principles are well-known technologies. The appropriate models are selected according to actual use. Therefore, the control methods and wiring layouts of the air distributor 3, suspension transfer pump 5, stripping reactor 8, nitrogen sensor 10, biological organic bacteria rotor 213, liquid level sensor 214, aerated denitrification filter box 27, liquid alkali additive 30, and pH sensor 31 will not be explained in detail.

[0035] The operating method and working principle of this device are as follows: First, when nitrogen-containing wastewater needs to be treated, the wastewater to be treated is transported to the stripping reactor 8 through the wastewater inlet 1. The stripping reactor 8 uses the nitrogen released from the wastewater inside to perform stripping operations. With the cooperation of the air distributor 3, the heating gas transported inside the heating pipe 2 evenly and steadily heats the stripped nitrogen. At the same time, the air blowing pipe of the air distributor 3 blows the heated nitrogen to the aeration pipe 28. Then, the heated nitrogen is transported to the aeration denitrification filter box 27 through the aeration inlet pipe for denitrification. Next, it is transported to the treatment tank 7 through the aeration inlet pipe. Simultaneously, under the action of the transfer pump 11, the wastewater inside the stripping reactor 8 is transported to the treatment tank 7 through the connecting pipe 12, so that the stripping reactor 8 and the treatment tank 7 are connected, extending the contact time with air. The denitrification process is continuous. Simultaneously, under the action of a micro / nano bubble generator, the wastewater injected into treatment tank 7 is treated. The gas generated by the micro / nano bubble generator is drawn into the vortex flow of treatment tank 7, causing the vortex to collapse and crush the bubbles. These bubbles are then released through the outlet nozzle in the form of micron-sized bubbles. The instantaneous bursting of these microbubbles releases the accumulated chemical energy, purifying the nitrogen in the wastewater. Next, with the assistance of extraction pump 13, the reaction wastewater in treatment tank 7 is transported through mixing pipe 14 to suspension transfer pump 5 for subsequent operations. Then, under the action of liquid alkali additive 30 located at the bottom of the stripping reactor 8 and treatment tank 7, a pH sensor 31 detects and provides feedback on the wastewater inside the stripping reactor 8 and treatment tank 7. The pH sensor 31 is a KNF-101-1 sensor with a precise measurement range of 0.00-14.Within the 0.0 pH range, when the acid value of the wastewater inside the stripping reactor 8 and the treatment tank 7 is detected to be too high, an electrical signal is sent to the liquid alkali additive 30. This allows the liquid alkali additive 30 to add alkali according to the acidity of the wastewater in the stripping reactor 8 and the treatment tank 7, thus intermittently and precisely adjusting the pH of the wastewater in both tanks. This maintains the overall balance of the wastewater, ensuring a reduction in nitrogen content and minimizing pollution during wastewater treatment. Then, after the overall wastewater treatment is completed, the suspension transfer pump is activated. 5. The treated wastewater that meets the standards is transported to the wastewater treatment pipe 17 through the discharge end 15, and then to the municipal sewage treatment plant. When the wastewater treatment fails to meet the standards, the circulation pump 16 is started. With the cooperation of the check valve 18, the treated wastewater that does not meet the standards is transported to the circulation pipe 20. With the cooperation of the flow controller 19, the flow rate of the transported wastewater that does not meet the standards is controlled to avoid the wastewater that is being treated being affected by too much wastewater circulating. Then, under the action of the circulation pipe 20, it is transported to the anti-corrosion housing 210, and the liquid level sensor 21... 4. With the cooperation of the system, the liquid level injected into the anti-corrosion shell 210 is detected. When the preset threshold is reached, an electrical signal is sent to the belt drive motor 211, causing the belt drive motor 211 to rotate and simultaneously drive the belt structure 212 to rotate. Simultaneously, the biological organic bacteria rotor 213 rotates at a uniform speed with the cooperation of the rotating shaft 215. The biological organic bacteria inside the rotor 213 capture and adhere nitrogen gas in the substandard wastewater, improving the efficiency of wastewater treatment and ensuring that the overall wastewater treatment structure strictly meets discharge standards, avoiding... The wastewater, after screening and filtration, causes secondary pollution to the surrounding environment. It is then transported via pipeline to the annular evaporation chamber 29. In the annular evaporation chamber 29 and the low-temperature cooling liquid delivery pipe 23, the filtered wastewater is evaporated and pressurized. At low temperature, it liquefies and is then transported to the dosing tank 24 to mix with the denitrification agent. The mixed liquid is then transported to the stripping reactor 8 via the delivery hose 26 for secondary treatment. The return pipe 32 prevents backflow from affecting the wastewater treatment in the stripping reactor 8.

[0036] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A system for treating nitrogen-containing wastewater, characterized in that: The system includes a wastewater inlet (1), an external stripping reactor (8) is provided outside the wastewater inlet (1), a Tesla tube is connected to the top side surface of the stripping reactor (8), the side end of the Tesla tube is configured as a suspension inlet (6), a treatment tank (7) is provided outside the suspension inlet (6), an air distributor (3) is installed on the top of the stripping reactor (8), and a heating pipe (2) is connected to the inside of the stripping reactor (8) through the air distributor (3), and liquid alkali additives (30) are installed at the bottom of both the stripping reactor (8) and the treatment tank (7), two sets of pH sensors (31) are installed on the surface of the liquid alkali additives (30), a nitrogen sensor (10) is connected to the side end of the stripping reactor (8), and a gas delivery pipe (4) is connected to the side end of the nitrogen sensor (10), the gas delivery pipe (4) is connected to the side end of the stripping reactor (8), and the gas delivery pipe (4) is connected to the side end of the nitrogen sensor (10). The delivery pipe (4) is connected to the treatment tank (7), and a delivery pump (11) is installed on the side surface of the stripping reactor (8). The side end of the delivery pump (11) is connected to a connecting pipe (12), the side end of the connecting pipe (12) is connected to a pump (13), the side end of the pump (13) is connected to a mixing pipe (14), the side end of the mixing pipe (14) is connected to a suspension delivery pump (5), and an aeration pipe (28) is connected to the back surface of the stripping reactor (8) and the treatment tank (7). The bottom end of the aeration pipe (28) is connected to an aeration denitrification filter box (27). The aeration pipe (28) is respectively set as an aeration inlet pipe and an aeration outlet pipe. The aeration inlet pipe is connected to the stripping reactor (8), and the aeration outlet pipe is connected to the treatment tank (7). A micro-nano bubble generator is installed inside the treatment tank (7).

2. The nitrogen-containing wastewater treatment system according to claim 1, characterized in that: The top of the suspension transfer pump (5) is connected to a drain pipe (15), and a circulation pump (16) is installed on the side of the drain pipe (15).

3. A nitrogen-containing wastewater treatment system according to claim 2, characterized in that: A check valve (18) is installed on the side end of the circulating pump (16), and a wastewater treatment pipe (17) is connected to the side end of the circulating pump (16). The wastewater treatment pipe (17) is connected to the municipal sewage station.

4. A nitrogen-containing wastewater treatment system according to claim 2, characterized in that: A flow controller (19) is connected to the top of the circulating pump (16), a circulation pipe (20) is connected to the outside of the flow controller (19), a filter assembly (21) is connected to the side of the circulation pipe (20), and an annular evaporation chamber (29) is connected to the side of the filter assembly (21) through a pipeline.

5. A nitrogen-containing wastewater treatment system according to claim 4, characterized in that: The filtration assembly (21) includes a corrosion-resistant shell (210), a belt drive motor (211) is installed at the bottom of the interior of the corrosion-resistant shell (210), a belt structure (212) is sleeved on the outside of the output shaft end of the belt drive motor (211), and a biological organic bacteria rotor (213) is sleeved on the other side of the belt structure (212).

6. A nitrogen-containing wastewater treatment system according to claim 5, characterized in that: A liquid level sensor (214) is installed on the inner wall of the anti-corrosion shell (210). A rotating shaft (215) is rotatably connected to the side end of the biological organic bacteria rotor (213). The side end of the rotating shaft (215) is installed on the back surface of the anti-corrosion shell (210) through a bearing seat. The belt drive motor (211), the belt structure (212), the rotating shaft (215) and the bearing seat are all protected against corrosion to avoid corrosion of the untreated wastewater transported through the circulation pipe (20). A support base (22) is installed on the outside of the anti-corrosion shell (210) and the annular evaporation chamber (29).

7. A nitrogen-containing wastewater treatment system according to claim 1, characterized in that: Both the stripping reactor (8) and the treatment tank (7) are fitted with stabilizing frames (9) on their outer periphery. The stabilizing frames (9) are fastened to the aeration denitrification filter box (27) by multiple sets of fastening bolts.

8. A system for treating nitrogen-containing wastewater containing iron oxide according to claim 4, characterized in that: The annular evaporation chamber (29) is connected to a low-temperature cooling infusion pipe (23) at one side, and a dosing tank (24) is connected to the right side of the low-temperature cooling infusion pipe (23).

9. A nitrogen-containing wastewater treatment system according to claim 8, characterized in that: The top of the dosing box (24) is provided with a dosing hole (25), and a dosing hose (26) is connected to the top surface of the dosing hole (25).

10. A nitrogen-containing wastewater treatment system according to claim 9, characterized in that: A return pipe (32) is connected to the side wall surface of the dosing tank (24), and the return pipe (32) is connected to the stripping reactor (8).

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