Intelligent oxygen control preservation system and method for anaerobic ammonia oxidation enrichment culture

Abstract

The invention discloses an intelligent oxygen control preservation system and method for anaerobic ammonia oxidation enrichment cultures, and belongs to the field of anaerobic ammonia oxidation enrichment culture preservation. The system comprises an enrichment culture preservation tank, a dissolved oxygen monitoring module, an intelligent control module and a dissolved oxygen adjusting module. The dissolved oxygen monitoring module comprises a plurality of dissolved oxygen sensors for detecting the concentration of dissolved oxygen in the enrichment culture preservation tank. The dissolved oxygen adjusting module comprises a medicine storage bin and a medicine adding bin, a rotatable medicine adding rotating wheel is arranged in the medicine adding bin, and the medicine adding bin is evenly divided into a plurality of cavities in the circumferential direction through the medicine adding rotating wheel; the bottom of the medicine adding bin is provided with a medicine adding opening for adding medicine into the enrichment culture preservation tank. The intelligent control module is used for controlling the rotation angle of the dosing runner according to the dissolved oxygen concentration and realizing graded dosing of the dosage of the medicament added into the enrichment culture preservation tank. The system is coupled with the dissolved oxygen concentration real-time monitoring-intelligent analysis-graded dosing process, and precise regulation and control of the dissolved oxygen concentration in the preservation tank are achieved.

Description

Technical Field

[0001] The present invention belongs to the field of anaerobic ammonium oxidation enrichment culture preservation, and in particular relates to an anaerobic ammonium oxidation enrichment culture intelligent oxygen control preservation system and method. Background Art

[0002] Anaerobic ammonium oxidation (Anammox) is a biological reaction that converts ammonia and nitrite into nitrogen gas under anaerobic conditions. The Anammox process based on this biological reaction is an economical, efficient and promising biological denitrification technology, which has the advantages of energy saving and carbon emission reduction, such as no need for external carbon source, low energy consumption for feeding, low sludge production and high denitrification efficiency.

[0003] Anaerobic ammonium oxidizing bacteria (AnAOB) are the executors of the Anammox process and the foundation of the process. However, AnAOB grows slowly and is sensitive to environmental conditions, which makes it difficult to accumulate and store Anammox bacteria. Therefore, harvesting sufficient strains has become the key to breaking through the bottleneck of Anammox engineering. Anammox enrichment culture is an independent functional unit formed by AnAOB and associated bacteria, and is the main strain form for the practical application of Anammox process. In actual engineering, anammox enrichment culture is in short supply, and anammox enrichment culture with large storage capacity and high quality is an effective means to solve the problems of Anammox engineering.

[0004] The preservation method of large-scale engineering anaerobic ammonium oxidation enrichment culture is extensive, and strict anaerobic treatment is often not performed. However, AnAOB is an anaerobic bacterium with high sensitivity to oxygen, and its half-inhibitory concentration is 0.03-3.8 mg·L -1 . Since AnAOB grows slowly, it often takes a long time to accumulate the amount of anaerobic ammonium oxidation enrichment culture required to start a project. During this process, the anaerobic ammonium oxidation enrichment culture will inevitably come into contact with air and be poisoned by dissolved oxygen. Therefore, it is urgent to develop an intelligent oxygen control preservation system for anaerobic ammonium oxidation enrichment culture to resist the adverse effects of dissolved oxygen on anaerobic ammonium oxidation enrichment culture during the preservation process. This will help to preserve anaerobic ammonium oxidation enrichment culture for a long time and obtain high-quality enrichment culture, which has important practical significance for the engineering application and promotion of the Anammox process. Summary of the invention

[0005] The purpose of the present invention is to solve the deficiencies in the prior art and to provide an intelligent oxygen-controlled preservation system and method for anaerobic ammonium oxidation enrichment culture.

[0006] The specific technical solutions adopted by the present invention are as follows:

[0007] In a first aspect, the present invention provides an anaerobic ammonium oxidation enrichment culture intelligent oxygen control preservation system, comprising an enrichment culture preservation tank, a dissolved oxygen monitoring module, an intelligent control module and a dissolved oxygen regulation module;

[0008] The top of the enrichment culture storage tank is provided with a tank cover and an air pressure balance valve; the bottom of the inner cavity of the enrichment culture storage tank is a sludge storage area filled with anaerobic ammonium oxidation enrichment culture; the sludge storage area is provided with a stirring device; the side wall of the enrichment culture storage tank is also provided with a sludge discharge port for discharging sludge;

[0009] The dissolved oxygen monitoring module is arranged in the enrichment culture storage tank, and the dissolved oxygen monitoring module includes a plurality of dissolved oxygen sensors for detecting the dissolved oxygen concentration in the enrichment culture storage tank; the monitoring end of the dissolved oxygen sensor is located below the liquid surface of the sludge storage area;

[0010] The dissolved oxygen regulating module comprises a drug storage bin arranged outside the enrichment culture storage tank and a drug adding bin arranged inside the enrichment culture storage tank; the drug storage bin and the drug adding bin are connected through a bin door; a rotatable drug adding wheel is arranged in the drug adding bin, and the drug adding wheel divides the drug adding bin into a plurality of chambers evenly along the circumference, and each chamber contains an equal amount of medicine; a drug adding port is arranged at the bottom of the drug adding bin for adding medicine to the inside of the enrichment culture storage tank;

[0011] Each dissolved oxygen sensor in the dissolved oxygen monitoring module is connected to the input end of the intelligent control module through a signal input line, and the dissolved oxygen concentration C at each point is measured. i The intelligent control module transmits the dissolved oxygen concentration C at each point to the i The average dissolved oxygen concentration C in the enrichment culture storage tank is calculated; the output end of the intelligent control module is connected to the dissolved oxygen regulation module through a signal output line, and the rotation angle of the dosing wheel is controlled according to the average dissolved oxygen concentration C, thereby adjusting the amount of medicine added to the enrichment culture storage tank.

[0012] Preferably, the dosing wheel divides the dosing chamber into five equal chambers, and the angle of each chamber is 72°.

[0013] Preferably, the air pressure balance valve adjusts the air pressure in the enrichment culture preservation tank to be consistent with atmospheric pressure.

[0014] Preferably, the volume of the mud storage area accounts for 2 / 3 to 4 / 5 of the inner volume of the enrichment culture preservation tank.

[0015] Preferably, the mud discharge port is connected to the outside through a pipeline provided with a mud discharge valve; the mud discharge valve is used to control the opening and closing of the mud discharge port.

[0016] Preferably, each dissolved oxygen sensor is also provided with a buoy body to ensure that the monitoring end of each dissolved oxygen sensor is at the same horizontal plane.

[0017] Preferably, the monitoring end of each dissolved oxygen sensor is located 10 to 20 cm below the liquid surface in the sludge storage area.

[0018] Preferably, at least 5 dissolved oxygen sensors are arranged in the dissolved oxygen monitoring module, which are evenly distributed on the cross section of the enrichment culture preservation tank to detect the dissolved oxygen concentration at each point respectively.

[0019] Preferably, the drug in the drug storage bin is a reducing agent, such as sodium sulfite, sodium thiosulfate, ascorbic acid, glutathione or tocopherol.

[0020] In a second aspect, the present invention provides an operation method of the intelligent oxygen control preservation system for anaerobic ammonium oxidation enrichment culture according to the first aspect, which is as follows:

[0021] During the sludge storage process of the storage system, the dissolved oxygen monitoring module monitors the dissolved oxygen concentration C at each point in the enrichment culture storage tank. i The intelligent control module is based on the dissolved oxygen concentration C at each point i The average dissolved oxygen concentration C in the enrichment culture storage tank is calculated;

[0022] If the average dissolved oxygen concentration C is greater than 2 mg / L, it is determined that the enrichment culture storage tank is in a high oxygen state; the intelligent control module controls the operation of the dissolved oxygen adjustment module through the signal output line, opens the door to allow the medicine in the medicine storage bin to enter the medicine adding bin; at this time, the medicine adding wheel rotates 360°, and all the medicines in the medicine adding bin enter the mud storage area from the medicine adding port; if the average dissolved oxygen concentration C is within the range of 1.5 to 2 mg / L, it is determined that the enrichment culture storage tank is in a medium oxygen state, at this time, the medicine adding wheel rotates 288°, and 4 / 5 of the medicines in the medicine adding bin enter the mud storage area from the medicine adding port; if the average dissolved oxygen concentration C is within the range of 1 to 1.5 mg / L, it is determined that the enrichment culture storage tank is in a low oxygen state, and at this time, the medicine adding wheel rotates 288°. The medicine wheel rotates 216°, and 3 / 5 of the medicine in the medicine adding chamber enters the mud storage area from the medicine adding port; if the average dissolved oxygen concentration C is within the range of 0.5-1.0 mg / L, it is determined that the enrichment culture storage tank is in a micro-oxygen state, at which time the medicine wheel rotates 144°, and 2 / 5 of the medicine in the medicine adding chamber enters the mud storage area from the medicine adding port; if the average dissolved oxygen concentration C is within the range of 0.2-0.5 mg / L, it is determined that the enrichment culture storage tank is in anoxic state, at which time the medicine wheel rotates 72°, and 1 / 5 of the medicine in the medicine adding chamber enters the mud storage area from the medicine adding port; the stirring device is started to dissolve the medicine and evenly disperse it in the water phase of the mud storage area to react with the dissolved oxygen, thereby reducing the dissolved oxygen concentration in the enrichment culture storage tank;

[0023] If the average dissolved oxygen concentration C is less than 0.2 mg / L, it is determined that the enrichment culture storage tank is in an anaerobic state, the anaerobic ammonia oxidation enrichment culture is not stressed, and no operation is required.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] (1) The system provided by the present invention is equipped with a dissolved oxygen monitoring device containing a plurality of dissolved oxygen sensors, which can detect the dissolved oxygen concentration in the anaerobic ammonium oxidation enrichment culture storage tank in real time, conveniently and accurately, realize rapid and accurate judgment of the system status, and timely intervene to alleviate the adverse effects of dissolved oxygen on the anaerobic ammonium oxidation enrichment culture.

[0026] (2) The system provided by the present invention is equipped with an intelligent control module, which couples the processes of real-time monitoring of dissolved oxygen concentration, intelligent analysis, and graded dosing, and automatically takes graded dosing measures according to the dissolved oxygen concentration range in the anaerobic ammonia oxidation enrichment culture storage tank, thereby reducing manpower and improving the accuracy of operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 The overall schematic diagram of the intelligent oxygen control preservation system for anaerobic ammonium oxidation enrichment culture provided in this embodiment;

[0028] Figure 2 A top view of the enrichment culture storage tank provided for this embodiment;

[0029] In the figure: tank cover 1, air pressure balance valve 2, mud storage area 3, dissolved oxygen sensor 4, buoy body 5, stirring device 6, medicine storage bin 7, bin door 8, dosing bin 9, dosing wheel 10, dosing port 11, signal input line 12, signal output line 13, mud discharge port 14, mud discharge valve 15; enrichment culture preservation tank I, dissolved oxygen monitoring module II, intelligent control module III and dissolved oxygen regulation module IV. DETAILED DESCRIPTION

[0030] The present invention is further described and illustrated below in conjunction with the accompanying drawings and specific embodiments. The technical features of each embodiment of the present invention can be combined accordingly without conflicting with each other.

[0031] like Figure 1 As shown, as a preferred embodiment of the present invention, this embodiment provides an anaerobic ammonium oxidation enrichment culture intelligent oxygen control preservation system. The preservation system includes an enrichment culture preservation tank I, a dissolved oxygen monitoring module II, an intelligent control module III and a dissolved oxygen regulation module IV.

[0032] In the system provided in this embodiment, a sealed tank cover 1 and a pressure balance valve 2 are provided on the top of the enrichment culture storage tank I. The pressure balance valve 2 is used to adjust the air pressure in the enrichment culture storage tank I to be consistent with the atmospheric pressure. The bottom of the inner cavity of the enrichment culture storage tank I is a mud storage area 3 filled with anaerobic ammonium oxidation enrichment culture. The volume of the mud storage area 3 accounts for 2 / 3 to 4 / 5 of the volume of the inner cavity of the enrichment culture storage tank I, and a certain space needs to be reserved above the mud storage area 3 for exhaust.

[0033] The mud storage area 3 is provided with a stirring device 6. The side wall of the enrichment culture storage tank I is also provided with a mud discharge port 14 for discharging mud, and the mud discharge port 14 is connected to the outside through a pipeline provided with a mud discharge valve 15. The mud discharge valve 15 is used to control the opening and closing of the mud discharge port 14.

[0034] like Figure 1 As shown, the dissolved oxygen monitoring module (II) is arranged inside the enrichment culture storage tank (I). The dissolved oxygen monitoring module II includes a plurality of dissolved oxygen sensors 4 for detecting the dissolved oxygen concentration in the enrichment culture storage tank I. Figure 2 As shown, this embodiment uses 5 dissolved oxygen sensors 4. The dissolved oxygen sensors 4 are evenly distributed on the cross section of the enrichment culture storage tank I. The monitoring end of the dissolved oxygen sensor 4 is located 10 to 20 cm below the liquid surface of the sludge storage area 3 to detect the dissolved oxygen concentration at each point. In order to ensure that the monitoring end of each dissolved oxygen sensor 4 is at the same horizontal plane and make the monitoring result more accurate, a buoy body 5 is also provided on each dissolved oxygen sensor 4 in this embodiment. Those skilled in the art can also set the number and arrangement position of the dissolved oxygen sensor 4 according to actual conditions.

[0035] In the system provided in this embodiment, the dissolved oxygen regulating module IV includes a drug storage bin 7 and a drug adding bin 9. The drug storage bin 7 is arranged outside the enrichment culture storage tank I, and the drug adding bin 9 is arranged inside the enrichment culture storage tank I. The drug storage bin 7 and the drug adding bin 9 are connected through a bin door 8. A rotatable drug adding wheel 10 controlled by the intelligent control module III is arranged in the drug adding bin 9. The drug adding wheel 10 divides the drug adding bin 9 into a plurality of chambers evenly along the circumferential direction, and each chamber contains an equal amount of medicine. A drug adding port 11 for adding medicine to the inside of the enrichment culture storage tank I is provided at the bottom of the drug adding bin 9.

[0036] In this embodiment, the dosing wheel 10 divides the dosing bin 9 into five chambers, each of which has an angle of 72°. The dosing wheel 10 rotates clockwise for 72° each time, and rotates different times according to the dissolved oxygen concentration in the enrichment culture storage tank I, thereby controlling the dissolved oxygen concentration in the enrichment culture storage tank I to a reasonable concentration. The agent in the drug storage bin 7 is a reducing agent, and sodium sulfite, sodium thiosulfate, ascorbic acid, glutathione, tocopherol, etc. can be used.

[0037] In the system provided in this embodiment, each dissolved oxygen sensor 4 in the dissolved oxygen monitoring module II is connected to the input end of the intelligent control module III through a signal input line 12, and the dissolved oxygen concentration C at each point is measured. i Transmitted to the intelligent control module III. The intelligent control module III calculates the dissolved oxygen concentration C at each point. i The average dissolved oxygen concentration C in the enrichment culture storage tank I is calculated. The output end of the intelligent control module III is connected to the dissolved oxygen adjustment module IV through the signal output line 13, and the rotation angle of the dosing wheel 10 is controlled according to the average dissolved oxygen concentration C, thereby adjusting the amount of the agent added to the enrichment culture storage tank I.

[0038] This embodiment also provides an operation method of the above-mentioned anaerobic ammonium oxidation enrichment culture intelligent oxygen control preservation system, which is as follows:

[0039] During the sludge storage process, the dissolved oxygen monitoring module II monitors the dissolved oxygen concentration C at each point in the enrichment culture storage tank I. i Intelligent control module III adjusts the dissolved oxygen concentration C at each point i The average dissolved oxygen concentration C in the enrichment culture storage tank Ⅰ was calculated.

[0040] If the average dissolved oxygen concentration C is greater than 2 mg / L, it is determined that the enrichment culture storage tank I is in a hyperoxic state, and the anaerobic ammonium oxidation enrichment culture is subjected to a fifth-level stress. The intelligent control module III controls the operation of the dissolved oxygen adjustment module IV through the signal output line 13, and opens the door 8 to allow the medicine in the medicine storage bin 7 to enter the medicine adding bin 9. At this time, the medicine adding wheel 10 rotates 360°, that is, the fifth gear, and all the medicines in the medicine adding bin 9 enter the mud storage area 3 from the medicine adding port 11. The stirring device 6 is started to dissolve the medicine and evenly disperse it in the water phase of the mud storage area 3 to react with the dissolved oxygen, thereby reducing the dissolved oxygen concentration in the enrichment culture storage tank I.

[0041] If the average dissolved oxygen concentration C is within the range of 1.5-2 mg / L, it is determined that the enrichment culture storage tank I is in a medium oxygen state, and the anaerobic ammonium oxidation enrichment culture is subjected to a fourth-level stress. The intelligent control module III controls the operation of the dissolved oxygen adjustment module IV through the signal output line 13, and opens the door 8 to allow the medicine in the medicine storage bin 7 to enter the medicine adding bin 9. At this time, the medicine adding wheel 10 rotates 288°, that is, the fourth gear, and 4 / 5 of the medicine in the medicine adding bin 9 enters the mud storage area 3 from the medicine adding port 11. The stirring device 6 is started to dissolve the medicine and evenly disperse it in the water phase of the mud storage area 3 to react with the dissolved oxygen, thereby reducing the dissolved oxygen concentration in the enrichment culture storage tank I.

[0042] If the average dissolved oxygen concentration C is within the range of 1 to 1.5 mg / L, it is determined that the enrichment culture storage tank I is in a hypoxic state, and the anaerobic ammonia oxidation enrichment culture is subjected to a third-level stress. The intelligent control module III controls the operation of the dissolved oxygen adjustment module IV through the signal output line 13, and opens the door 8 to allow the medicine in the medicine storage bin 7 to enter the medicine adding bin 9. At this time, the medicine adding wheel 10 rotates 216°, that is, the third gear, and 3 / 5 of the medicine in the medicine adding bin 9 enters the mud storage area 3 from the medicine adding port 11. The stirring device 6 is started to dissolve the medicine and evenly disperse it in the water phase of the mud storage area 3 to react with the dissolved oxygen, thereby reducing the dissolved oxygen concentration in the enrichment culture storage tank I.

[0043] If the average dissolved oxygen concentration C is within the range of 0.5-1.0 mg / L, it is determined that the enrichment culture storage tank I is in a micro-oxygen state, and the anaerobic ammonium oxidation enrichment culture is under secondary stress. The intelligent control module III controls the operation of the dissolved oxygen adjustment module IV through the signal output line 13, and opens the door 8 to allow the medicine in the medicine storage bin 7 to enter the medicine adding bin 9. At this time, the medicine adding wheel 10 rotates 144°, that is, two gears, and 2 / 5 of the medicine in the medicine adding bin 9 enters the mud storage area 3 from the medicine adding port 11. The stirring device 6 is started to dissolve the medicine and evenly disperse it in the water phase of the mud storage area 3 to react with the dissolved oxygen, thereby reducing the dissolved oxygen concentration in the enrichment culture storage tank I.

[0044] If the average dissolved oxygen concentration C is within the range of 0.2-0.5 mg / L, it is determined that the enrichment culture storage tank I is in anoxic state, and the anaerobic ammonium oxidation enrichment culture is under primary stress. The intelligent control module III controls the operation of the dissolved oxygen regulation module IV through the signal output line 13, and opens the door 8 to allow the medicine in the medicine storage bin 7 to enter the medicine adding bin 9. At this time, the medicine adding wheel 10 rotates 72°, that is, the first gear, and 1 / 5 of the medicine in the medicine adding bin 9 enters the mud storage area 3 from the medicine adding port 11. The stirring device 6 is started to dissolve the medicine and evenly disperse it in the water phase of the mud storage area 3 to react with the dissolved oxygen, thereby reducing the dissolved oxygen concentration in the enrichment culture storage tank I.

[0045] If the average dissolved oxygen concentration C is less than 0.2 mg / L, it is determined that the enrichment culture storage tank I is in an anaerobic state, the anaerobic ammonia oxidation enrichment culture is not stressed, and no operation is required.

[0046] In actual operation, the dosage of each level in the dissolved oxygen regulating module IV needs to be balanced according to the stoichiometric relationship between the added agent and the oxygen reaction and the actual liquid phase volume in the mud storage area 3. The dosage of each level can be regulated by controlling the rotation speed of the dosing wheel 10. The above-described embodiment is only a preferred solution of the present invention, but it is not intended to limit the present invention. Ordinary technicians in the relevant technical field can also make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, all technical solutions obtained by equivalent replacement or equivalent transformation fall within the protection scope of the present invention.

Claims

1. An intelligent oxygen control and preservation system for anaerobic ammonium oxidation enrichment culture, characterized in that: It includes an enrichment culture storage tank (I), a dissolved oxygen monitoring module (II), an intelligent control module (III) and a dissolved oxygen regulating module (IV); The top of the enrichment culture storage tank (I) is provided with a tank cover (1) and an air pressure balance valve (2); the bottom of the inner cavity of the enrichment culture storage tank (I) is a sludge storage area (3) filled with anaerobic ammonium oxidation enrichment culture; the sludge storage area (3) is provided with a stirring device (6); the side wall of the enrichment culture storage tank (I) is also provided with a sludge discharge port (14) for discharging sludge; The dissolved oxygen monitoring module (II) is arranged in the enrichment culture storage tank (I), and the dissolved oxygen monitoring module (II) comprises a plurality of dissolved oxygen sensors (4) for detecting the dissolved oxygen concentration in the enrichment culture storage tank (I); the monitoring end of the dissolved oxygen sensor (4) is located below the liquid surface of the sludge storage area (3); The dissolved oxygen regulating module (IV) comprises a drug storage bin (7) arranged outside the enrichment culture storage tank (I) and a drug adding bin (9) arranged inside the enrichment culture storage tank (I); the drug storage bin (7) and the drug adding bin (9) are connected via a bin door (8); a rotatable drug adding wheel (10) is arranged inside the drug adding bin (9), and the drug adding wheel (10) divides the drug adding bin (9) into a plurality of chambers evenly along the circumferential direction, and each chamber contains an equal amount of drug; a drug adding port (11) is provided at the bottom of the drug adding bin (9) for adding drugs to the inside of the enrichment culture storage tank (I); Each dissolved oxygen sensor (4) in the dissolved oxygen monitoring module (II) is connected to the input end of the intelligent control module (III) through a signal input line (12), and the dissolved oxygen concentration C at each point is measured. i Transmitted to the intelligent control module (III); the intelligent control module (III) according to the dissolved oxygen concentration C at each point i The average dissolved oxygen concentration C in the enriched culture storage tank (I) is calculated; the output end of the intelligent control module (III) is connected to the dissolved oxygen regulating module (IV) via a signal output line (13), and the rotation angle of the dosing wheel (10) is controlled according to the average dissolved oxygen concentration C, thereby adjusting the amount of the drug added to the enriched culture storage tank (I).

2. The intelligent oxygen control and preservation system for anaerobic ammonium oxidation enrichment culture according to claim 1, characterized in that: The dosing wheel (10) divides the dosing chamber (9) into five equal chambers, and the angle of each chamber is 72°.

3. The intelligent oxygen control and preservation system for anaerobic ammonium oxidation enrichment culture according to claim 1, characterized in that: The air pressure balance valve (2) adjusts the air pressure in the enrichment culture storage tank (I) to be consistent with the atmospheric pressure.

4. The intelligent oxygen control preservation system for anaerobic ammonium oxidation enrichment culture according to claim 1, characterized in that: The volume of the mud storage area (3) accounts for 2 / 3 to 4 / 5 of the inner cavity volume of the enriched culture storage tank (I).

5. The intelligent oxygen control and preservation system for anaerobic ammonium oxidation enrichment culture according to claim 1, characterized in that: The mud discharge port (14) is connected to the outside through a pipeline provided with a mud discharge valve (15); the mud discharge valve (15) is used to control the opening and closing of the mud discharge port (14).

6. The intelligent oxygen control and preservation system for anaerobic ammonium oxidation enrichment culture according to claim 1, characterized in that: Each dissolved oxygen sensor (4) is also provided with a buoy body (5) to ensure that the monitoring end of each dissolved oxygen sensor (4) is located at the same horizontal plane.

7. The intelligent oxygen control and preservation system for anaerobic ammonium oxidation enrichment culture according to claim 1, characterized in that: The monitoring end of each dissolved oxygen sensor (4) is located 10 to 20 cm below the liquid surface of the sludge storage area (3).

8. The intelligent oxygen control and preservation system for anaerobic ammonium oxidation enrichment culture according to claim 1, characterized in that: At least five dissolved oxygen sensors (4) are arranged in the dissolved oxygen monitoring module (II) and are evenly distributed on the cross section of the enrichment culture storage tank (I) to detect the dissolved oxygen concentration at each point respectively.

9. The intelligent oxygen control preservation system for anaerobic ammonium oxidation enrichment culture according to claim 1, characterized in that: The medicine in the medicine storage bin (7) is a reducing medicine, and is sodium sulfite, sodium thiosulfate, ascorbic acid, glutathione or tocopherol.

10. A method for operating the intelligent oxygen control preservation system for anaerobic ammonium oxidation enrichment culture according to claim 2, characterized in that: The details are as follows: In the sludge storage process of the storage system, the dissolved oxygen monitoring module (II) monitors the dissolved oxygen concentration C at each point in the enrichment culture storage tank (I). i The intelligent control module (III) is based on the dissolved oxygen concentration C at each point i The average dissolved oxygen concentration C in the enrichment culture storage tank (Ⅰ) is calculated; If the average dissolved oxygen concentration C is greater than 2 mg / L, it is determined that the enrichment culture storage tank (I) is in a high oxygen state; the intelligent control module (III) controls the dissolved oxygen adjustment module (IV) to work through the signal output line (13), opens the door (8) and allows the medicine in the medicine storage bin (7) to enter the medicine adding bin (9); at this time, the medicine adding wheel (10) rotates 360 degrees, and all the medicine in the medicine adding bin (9) enters the mud storage area (3) from the medicine adding port (11); if the average dissolved oxygen concentration C is within the range of 1.5 to 2 mg / L, it is determined that the enrichment culture storage tank (I) is in a medium oxygen state, at this time, the medicine adding wheel (10) rotates 288 degrees, and 4 / 5 of the medicine in the medicine adding bin (9) enters the mud storage area (3) from the medicine adding port (11); if the average dissolved oxygen concentration C is within the range of 1 to 1.5 mg / L, it is determined that the enrichment culture storage tank (I) is in a low oxygen state, and at this time, the medicine adding The rotor (10) rotates 216°, and 3 / 5 of the medicine in the medicine adding chamber (9) enters the mud storage area (3) from the medicine adding port (11); if the average dissolved oxygen concentration C is within the range of 0.5-1.0 mg / L, it is determined that the enrichment culture storage tank (I) is in a micro-oxygen state, and at this time the medicine adding rotor (10) rotates 144°, and 2 / 5 of the medicine in the medicine adding chamber (9) enters the mud storage area (3) from the medicine adding port (11); if the average dissolved oxygen concentration C is within the range of 0.2-0.5 mg / L, it is determined that the enrichment culture storage tank (I) is in an anoxic state, and at this time the medicine adding rotor (10) rotates 72°, and 1 / 5 of the medicine in the medicine adding chamber (9) enters the mud storage area (3) from the medicine adding port (11); the stirring device (6) is started to dissolve the medicine and evenly disperse it in the water phase of the mud storage area (3) to react with the dissolved oxygen, thereby reducing the dissolved oxygen concentration in the enrichment culture storage tank (I); If the average dissolved oxygen concentration C is less than 0.2 mg / L, it is determined that the enrichment culture storage tank (I) is in an anaerobic state, the anaerobic ammonium oxidation enrichment culture is not stressed, and no operation is required.

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