Aerobic residual ammonia nitrogen real-time control system, method, equipment and medium for AOA process

Abstract

The invention provides an AOA process aerobic residual ammonia nitrogen real-time control system, method, equipment and medium, and relates to the technical field of sewage treatment.The system comprises a water inlet pump, an anaerobic tank, a multi-stage aerobic tank, an anoxic tank, an aerobic section ammonia nitrogen sensor, an anoxic section ammonia nitrogen sensor and a controller; the water inlet pump, the aerobic section ammonia nitrogen sensor and the anoxic section ammonia nitrogen sensor are all electrically connected with the controller, the controller continuously executes n debugging stages, so that the first ammonia nitrogen concentration value is maintained in a target preset interval, the second ammonia nitrogen concentration value is smaller than a preset concentration threshold value, and the first ammonia nitrogen concentration value is smaller than the preset concentration threshold value. Namely, while the ammonia nitrogen concentration of the effluent of the system is stably lower than the emission limit value, the residual ammonia nitrogen substrate entering the anoxic tank is increased in a gradient manner, so that the enrichment speed of anaerobic ammonium oxidation bacteria is increased. By implementing the technical scheme provided by the invention, the technical problem of slow enrichment of anaerobic ammonium oxidation bacteria due to the fact that the aerobic residual ammonia nitrogen in the AOA process is not controlled in real time is solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of sewage treatment, in particular to an AOA process residual ammonia nitrogen real-time control system, method, device and medium. BACKGROUND

[0002] The AOA (anaerobic-oxygen-lack of oxygen) process provides a theoretical condition for the growth of anammox bacteria by setting a long post-lack of oxygen section. However, anammox bacteria grow slowly and are extremely sensitive to the environment, especially to the ammonia nitrogen concentration as a key reaction substrate. Therefore, how to stably supply an appropriate amount of ammonia nitrogen substrate to the post-lack of oxygen section is a core technical problem that determines whether the process can successfully achieve anammox bacteria enrichment.

[0003] To achieve control of the process, the prior art usually relies on periodic manual sampling and offline testing of the total effluent outlet of the system. The operator adjusts the aeration air volume of the entire aerobic section uniformly and macroscopically according to the final effluent ammonia nitrogen value obtained by testing, passively affects the final effluent quality by changing the overall nitrification intensity, and ensures that it meets the discharge standard.

[0004] The above-mentioned implementation mode of the prior art has inherent defects. First, the mode of manual sampling and offline analysis leads to a serious lag in control response. Second, indiscriminate aeration adjustment of the entire aerobic section is a kind of extensive management. In actual operation, in order to ensure that the final effluent quality absolutely meets the standard, the operator often adopts a conservative strategy of excessive aeration, but this directly leads to excessive removal of ammonia nitrogen in the effluent of the aerobic section, resulting in a long-term insufficient supply of ammonia nitrogen substrate to the subsequent lack of oxygen section, which seriously inhibits the growth and enrichment of anammox bacteria. SUMMARY

[0005] In order to solve the technical problem of slow anammox bacteria enrichment caused by the lack of real-time control of residual ammonia nitrogen in the aerobic section of the existing AOA process, the present application provides an AOA process residual ammonia nitrogen real-time control system, method, device and medium.

[0006] In a first aspect, the present application provides an AOA process residual ammonia nitrogen real-time control system, comprising: an influent pump, an anaerobic tank, a multi-stage aerobic tank, a lack of oxygen tank, an aerobic section ammonia nitrogen sensor, a lack of oxygen section ammonia nitrogen sensor and a controller; The aerobic section ammonia nitrogen sensor is arranged at the effluent outlet of the multi-stage aerobic tank and is used to monitor the first ammonia nitrogen concentration value of the effluent outlet of the multi-stage aerobic tank. The lack of oxygen section ammonia nitrogen sensor is arranged at the effluent outlet of the lack of oxygen tank and is used to monitor the second ammonia nitrogen concentration value of the effluent outlet of the lack of oxygen tank. The water inlet pump, the aerobic section ammonia nitrogen sensor and the anoxic section ammonia nitrogen sensor are electrically connected with the controller, the controller continuously executes n debugging stages to maintain the first ammonia nitrogen concentration value in a target preset interval, and the second ammonia nitrogen concentration value is less than a preset concentration threshold value; The i-th debugging stage is any one of the n debugging stages, and the following steps are executed for the i-th debugging stage: The first ammonia nitrogen concentration value is adjusted in real time to adjust the water inlet amount of the sewage and the aeration air volume of the multi-stage aerobic tank, so that the first ammonia nitrogen concentration value is in the i-th preset interval, and the second ammonia nitrogen concentration value is adjusted in real time to adjust the aeration air volume of the multi-stage aerobic tank, so that the second ammonia nitrogen concentration value is less than the preset concentration threshold value; When i is less than n, and the duration that the second ammonia nitrogen concentration value is less than the preset concentration threshold value is greater than the i-th preset duration, the i+1-th debugging stage is executed, the i+1-th debugging stage is the next debugging stage of the i-th debugging stage, the upper limit of the i-th preset interval is equal to the lower limit of the i+1-th preset interval, and the i+1-th preset interval is the preset interval of the first ammonia nitrogen concentration value corresponding to the i+1-th debugging stage.

[0007] By adopting the above technical scheme, the application forms a real-time monitoring system by setting double-point ammonia nitrogen sensors, and realizes precise regulation and control of system operation parameters by combining the multi-stage debugging strategy of the controller. Specifically, the aerobic section ammonia nitrogen sensor and the anoxic section ammonia nitrogen sensor monitor the ammonia nitrogen concentration at the key nodes respectively, and provide real-time data support for the controller. Based on these data, the controller adjusts the water inlet amount and the aeration air volume of the multi-stage aerobic tank, not only maintains the residual ammonia nitrogen concentration in the aerobic section within the target interval, but also ensures that the ammonia nitrogen concentration of the anoxic effluent is stably lower than the discharge limit value. At the same time, by setting the linking mechanism of the preset intervals of adjacent debugging stages, the gradient improves the ammonia nitrogen substrate concentration in the anoxic section, creating a favorable environment for the growth and enrichment of anaerobic ammonia oxidation bacteria. This precise regulation and control method based on real-time data overcomes the control response lag problem caused by traditional manual sampling and offline analysis, and significantly improves the regulation and control accuracy of the system.

[0008] Optionally, the multi-stage aerobic tank comprises a first-stage aerobic tank, a second-stage aerobic tank and a third-stage aerobic tank. The sewage passes through the anaerobic tank, the first-stage aerobic tank, the second-stage aerobic tank, the third-stage aerobic tank and the anoxic tank in sequence, and then flows out, and the aerobic section ammonia nitrogen sensor is arranged at the outlet of the third-stage aerobic tank.

[0009] By adopting the technical scheme, the aerobic tank is divided into a three-level structure, and a complete cascade treatment system is formed by reasonably arranging the treatment units of the tank bodies at different levels. In the system, the sewage sequentially passes through the anaerobic tank, the first-stage aerobic tank, the second-stage aerobic tank, the third-stage aerobic tank and the anoxic tank, and the step-by-step degradation of pollutants is realized. In particular, by arranging the ammonia nitrogen sensor at the outlet of the third-stage aerobic tank, the treatment effect of the entire aerobic section can be accurately obtained. This cascade treatment structure not only improves the adaptability of the system to water quality fluctuations, but also controls the aeration air volume in stages, facilitating the accurate control of residual ammonia nitrogen in the aerobic section and creating a favorable environment for the growth and enrichment of anammox bacteria in the subsequent anoxic section, thereby effectively improving the treatment efficiency and operation stability of the entire system.

[0010] In the second aspect of the present application, an AOA process aerobic residual ammonia nitrogen real-time control method is also provided, which is applied to an AOA process aerobic residual ammonia nitrogen real-time control system and includes the following steps: monitoring a first ammonia nitrogen concentration value at the outlet of the multi-stage aerobic tank and a second ammonia nitrogen concentration value at the outlet of the anoxic tank; continuously performing n debugging stages to maintain the first ammonia nitrogen concentration value in a target preset interval and the second ammonia nitrogen concentration value less than a preset concentration threshold, wherein the ith debugging stage is any one of the n debugging stages, and the following steps are performed for the ith debugging stage: adjusting the influent amount of the sewage and the aeration air volume of the multi-stage aerobic tank in real time according to the first ammonia nitrogen concentration value to make the first ammonia nitrogen concentration value in the ith preset interval, and adjusting the aeration air volume of the multi-stage aerobic tank in real time according to the second ammonia nitrogen concentration value to make the second ammonia nitrogen concentration value less than the preset concentration threshold; when i is less than n and the duration for which the second ammonia nitrogen concentration value is less than the preset concentration threshold is greater than the ith preset duration, the ith+1 debugging stage is performed, the ith+1 debugging stage is the next debugging stage of the ith debugging stage, the upper limit of the interval of the ith preset interval is equal to the lower limit of the interval of the ith+1 preset interval, and the ith+1 preset interval is the preset interval of the first ammonia nitrogen concentration value corresponding to the ith+1 debugging stage.

[0011] By adopting the technical scheme, the application provides a dynamic control method based on multi-stage debugging. The method first establishes a double-point real-time monitoring system to continuously obtain ammonia nitrogen concentration data of the aerobic section and the anoxic section, providing data support for subsequent precise control. On this basis, the system executes a multi-stage debugging strategy, and each stage is set with a unique preset interval target. By simultaneously controlling the influent flow and the aeration air volume, the residual ammonia nitrogen concentration in the aerobic section is maintained within the target interval, and the effluent ammonia nitrogen concentration in the anoxic section is less than the preset concentration threshold. At the same time, by setting the connection mechanism of the preset intervals of adjacent debugging stages, the lower limit of the interval of the next stage is equal to the upper limit of the interval of the previous stage, the smooth transition of the system parameters is ensured. At the same time, the system also adjusts in real time according to the ammonia nitrogen concentration at the end of the anoxic section, forming a complete closed-loop control. This multi-stage, multi-parameter and closed-loop collaborative control method not only significantly improves the control accuracy of the system, but also effectively avoids the system impact problem caused by parameter adjustment mutation in the traditional process, and creates a stable environment for the rapid enrichment of anaerobic ammonia oxidation bacteria.

[0012] Optionally, the step of adjusting the influent flow and the aeration air volume of the multi-stage aerobic tank according to the first ammonia nitrogen concentration value to make the first ammonia nitrogen concentration value in the ith preset interval, specifically comprises: when the first ammonia nitrogen concentration value is less than the lower limit of the ith preset interval, increasing the influent flow to increase the first ammonia nitrogen concentration value; when the first ammonia nitrogen concentration value is in the ith preset interval, keeping the influent flow unchanged to make the first ammonia nitrogen concentration value in the ith preset interval.

[0013] By adopting the technical scheme, the application specifies the influent flow control strategy based on the first ammonia nitrogen concentration value. This strategy is based on real-time monitoring data, and by comparing the ammonia nitrogen concentration with the preset interval, the precise adjustment of the influent flow is realized. Specifically, when the ammonia nitrogen concentration is lower than the lower limit of the preset interval, the system will automatically increase the influent flow to increase the ammonia nitrogen concentration by increasing the influent load; when the ammonia nitrogen concentration is within the preset interval, the system maintains the influent flow unchanged to maintain the stable operation of the system. This intelligent control strategy based on threshold breaks through the limitations of traditional process relying on manual experience for extensive adjustment. By establishing a quantitative relationship between ammonia nitrogen concentration and influent flow, the system can respond to water quality changes in time and make precise adjustments, effectively avoiding system fluctuations caused by blind adjustment. At the same time, this control method also provides a stable nutrient environment for the anaerobic ammonia oxidation bacteria in the subsequent anoxic section, fundamentally ensuring the long-term stable operation of the system.

[0014] Optionally, the step of adjusting the influent amount of the wastewater and the aeration air volume of the multi-stage aerobic tank in real time according to the first ammonia nitrogen concentration value so that the first ammonia nitrogen concentration value is in the ith preset interval further comprises the following steps of: When the first ammonia nitrogen concentration value is greater than the upper limit of the ith preset interval, the first aeration air volume of the first-stage aerobic tank and the second aeration air volume of the second-stage aerobic tank are increased to reduce the first ammonia nitrogen concentration value; when the first aeration air volume is increased to a preset first maximum value and the second aeration air volume is increased to a preset second maximum value, and the first ammonia nitrogen concentration value is greater than the upper limit of the ith preset interval, the influent amount is reduced to make the first ammonia nitrogen concentration value be in the ith preset interval; wherein the multi-stage aerobic tank comprises the first-stage aerobic tank and the second-stage aerobic tank. When the first ammonia nitrogen concentration value is less than the lower limit of the ith preset interval, and the first aeration air volume is equal to the preset first maximum value and the second aeration air volume is equal to the preset second maximum value, the first aeration air volume and the second aeration air volume are reduced to increase the first ammonia nitrogen concentration value; when the first aeration air volume is reduced to a preset first minimum value and the second aeration air volume is reduced to a preset second minimum value, and the first ammonia nitrogen concentration value is less than the lower limit of the ith preset interval, the influent amount is increased to make the first ammonia nitrogen concentration value be in the ith preset interval.

[0015] By adopting the above technical solution, the application constructs a complete aeration air volume regulation mechanism. The mechanism establishes different response strategies for the two cases of high and low ammonia nitrogen concentration. When the ammonia nitrogen concentration in the aerobic section exceeds the upper limit of the preset interval, the system first strengthens the nitrification by increasing the aeration air volume of the first-stage and second-stage aerobic tanks; only when the aeration air volume is increased to the preset maximum value and the ammonia nitrogen concentration still cannot be reduced to the target interval, the influent amount is reduced. When the ammonia nitrogen concentration in the aerobic section is lower than the lower limit of the preset interval, and the aeration air volume of the first-stage and second-stage aerobic tanks is at the maximum value, the system will preferentially reduce the aeration air volume, and only in the case that the ammonia nitrogen concentration is still low after being reduced to the minimum value, the influent amount is increased. This strategy selects to adjust the aeration air volume rather than the influent amount, mainly based on two considerations: first, adjusting the aeration air volume has faster response speed and higher controllability than adjusting the influent amount, which can realize system stability faster; second, by preferentially reducing the aeration air volume to increase the ammonia nitrogen concentration, the energy consumption can be reduced while maintaining a large treatment water volume, thereby improving the treatment efficiency of the system. This fine regulation mechanism based on multiple condition judgments and preferentially selecting to adjust the aeration air volume not only ensures the fast response ability of the system, but also realizes the optimized balance between treatment efficiency and operation cost.

[0016] Optionally, the first aeration air volume and the second aeration air volume are determined according to a third aeration air volume of a third aerobic tank in a preset proportional relationship, and the multi-stage aerobic tank comprises the third aerobic tank. The step of increasing the first aeration air volume of the first-stage aerobic tank and the second aeration air volume of the second-stage aerobic tank specifically comprises: increasing the first aeration air volume and the second aeration air volume in a step-by-step manner, wherein the increasing amount of the first aeration air volume is greater than the increasing amount of the second aeration air volume in each increasing process. The step of decreasing the first aeration air volume of the first-stage aerobic tank and the second aeration air volume of the second-stage aerobic tank specifically comprises: decreasing the first aeration air volume and the second aeration air volume in a step-by-step manner, wherein the decreasing amount of the first aeration air volume is greater than the decreasing amount of the second aeration air volume in each decreasing process.

[0017] By adopting the above technical solution, the application establishes a differential aeration regulation mechanism for the first-stage and second-stage aerobic tanks. First, the mechanism establishes a preset proportional relationship between the first and second aeration air volumes and the third aeration air volume, thereby realizing the coordinated linkage control of the multi-stage aerobic system. This design brings two advantages: first, it simplifies the control logic, and the system only needs to adjust the third aeration air volume to synchronously adjust the first two stages, thereby improving the operation reliability; second, it optimizes the energy distribution, thereby ensuring that the aeration amount can always match the pollutant concentration gradient along the path, and improving the energy efficiency. On this basis, the mechanism adopts a step-by-step adjustment strategy to decompose the large adjustment of the air volume into a gentle multi-step process. This gradual adjustment mode effectively avoids the sharp fluctuation of the aeration intensity, buffers the impact on the microbial system, and thereby guarantees the biological stability of the system. At the same time, the design of the proportional relationship naturally realizes differential regulation, that is, the regulation range of the first-stage aerobic tank is greater than that of the second-stage aerobic tank. This precisely matches the functional positioning of the two treatment units: the first-stage aerobic tank as the front-end treatment unit obtains the greater regulation flexibility necessary to cope with the fluctuation of the influent load; and the second-stage aerobic tank as the deep treatment unit maintains the stability of the effluent water quality through relatively gentle regulation.

[0018] Optionally, the step of adjusting the aeration air volume of the multi-stage aerobic tank in real time according to the second ammonia nitrogen concentration value to make the second ammonia nitrogen concentration value less than a preset concentration threshold specifically comprises: when the second ammonia nitrogen concentration value is greater than or equal to the preset concentration threshold, increasing the third aeration air volume of the third-stage aerobic tank to reduce the second ammonia nitrogen concentration value, wherein the multi-stage aerobic tank comprises the third-stage aerobic tank; when the second ammonia nitrogen concentration value is reduced to less than the preset concentration threshold, controlling the third aeration air volume to be reduced to an initial third aeration air volume.

[0019] By adopting the technical scheme, the application constructs an independent aeration regulation and control mechanism of the three-stage aerobic tank. The mechanism adjusts the aeration intensity of the three-stage aerobic tank in real time by monitoring the ammonia nitrogen concentration of the effluent of the anoxic tank. When the ammonia nitrogen concentration of the effluent of the anoxic tank is detected to exceed a threshold value, the system increases the aeration air volume of the three-stage aerobic tank to strengthen the nitrification; when the ammonia nitrogen concentration is reduced to below the threshold value, the aeration air volume is restored to the initial level. This targeted regulation strategy fully plays the guarantee role of the three-stage aerobic tank as the last aerobic treatment unit of the system, ensuring that the effluent quality meets the standard and avoiding unnecessary energy consumption. In particular, by setting the reset mechanism of the aeration air volume, the treatment effect is ensured while the optimized control of energy consumption is realized.

[0020] Optionally, the method further comprises: When the water inflow is increased, the first aeration air volume of the first-stage aerobic tank and the second aeration air volume of the second-stage aerobic tank are simultaneously increased within a target preset time length.

[0021] By adopting the technical scheme, the application introduces a biological adaptability feedback mechanism. When the system needs to increase the water inflow, the controller simultaneously triggers two tasks: one is to adjust the water inflow pump to increase the water inflow, and the other is to simultaneously increase the aeration air volume of the first-stage and second-stage aerobic tanks within a preset time length. This linkage regulation mechanism takes into account the adaptation process of the microbial system to load changes. By increasing the aeration oxygen supply while increasing the water inflow, sufficient oxygen supply is provided for AOB bacteria to help them quickly adapt to the increased ammonia nitrogen load. This not only avoids the microbial inhibition phenomenon that may be caused by simply increasing the water inflow, but also improves the smooth transition capability of the system to load increase, thereby effectively improving the smoothness and success rate of the system load increase.

[0022] In a third aspect of the application, an electronic device is also provided, which includes a memory and a processor, the memory has a computer program stored thereon, and the processor implements the method steps of any one of the above aspects when executing the program.

[0023] In a fourth aspect of the application, a computer readable storage medium is also provided, which stores instructions, and the instructions are executed to perform the method steps of any one of the above aspects. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 is an example of an AOA process aerobic residual ammonia nitrogen real-time control system provided by an embodiment of the application; Figure 2 is a flowchart of an AOA process aerobic residual ammonia nitrogen real-time control method provided by an embodiment of the application; Figure 3 is another flowchart of an AOA process aerobic residual ammonia nitrogen real-time control method provided by an embodiment of the application; is an example of an AOA process aerobic residual ammonia nitrogen real-time control system provided by an embodiment of the application;Figure 4 is a structural schematic diagram of an electronic device disclosed by an embodiment of the present application.

[0025] Label explanation: 10 - water inlet pump; 20 - anaerobic tank; 30 - multi-stage aerobic tank; 40 - anoxic tank; 50 - aerobic section ammonia nitrogen sensor; 60 - anoxic section ammonia nitrogen sensor; 70 - controller; 301 - first-stage aerobic tank; 302 - second-stage aerobic tank; 303 - third-stage aerobic tank. DETAILED DESCRIPTION

[0026] In order for those skilled in the art to better understand the technical solutions in the specification, the technical solutions in the embodiments of the specification will be clearly and completely described below in combination with the drawings in the embodiments of the specification. Obviously, the described embodiments are only some of the embodiments of the present application, not all the embodiments.

[0027] In the description of the embodiments of the present application, the words such as "for example" or "for instance" are used to represent an example, illustration or description. Any embodiment or design scheme described as "for example" or "for instance" in the embodiments of the present application should not be interpreted as more preferred or more advantageous than other embodiments or design schemes. Rather, the words such as "for example" or "for instance" are intended to present the relevant concept in a specific manner.

[0028] In the description of the embodiments of the present application, the term "a plurality of" means two or more. In addition, the terms "first", "second" are used for description purposes only, and should not be understood as indicating or implying relative importance or implicitly indicating the indicated technical features. Therefore, the features defined with "first", "second" can be explicitly or implicitly included one or more features. The terms "include", "contain", "have" and their variants mean "include but are not limited to", unless otherwise specifically emphasized.

[0029] The present application provides an AOA process aerobic residual ammonia nitrogen real-time control system, referring to Figure 1 , Figure 1 is an example diagram of an AOA process aerobic residual ammonia nitrogen real-time control system provided by an embodiment of the present application, comprising: a water inlet pump 10, an anaerobic tank 20, a multi-stage aerobic tank 30, an anoxic tank 40, an aerobic section ammonia nitrogen sensor 50, an anoxic section ammonia nitrogen sensor 60 and a controller 70; The aerobic section ammonia nitrogen sensor 50 is arranged at the water outlet of the multi-stage aerobic tank 30, and is used to monitor the first ammonia nitrogen concentration value of the water outlet of the multi-stage aerobic tank 30; the anoxic section ammonia nitrogen sensor 60 is arranged at the water outlet of the anoxic tank 40, and is used to monitor the second ammonia nitrogen concentration value of the water outlet of the anoxic tank 40; The water inlet pump 10, the aerobic section ammonia nitrogen sensor 50 and the anoxic section ammonia nitrogen sensor 60 are electrically connected with the controller 70, the controller 70 is also connected with the same number of electric valves as the number of stages of the multi-stage aerobic tank 30, each electric valve is connected with a fan and an aerator, an aerator is arranged in each stage of the multi-stage aerobic tank 30, and the controller 70 also adjusts the aeration air volume of the multi-stage aerobic tank by controlling the electric valve.

[0030] In the formula, the water inlet pump 10 represents a device for adjusting the water inlet amount, and the flow adjustment is realized by electrical connection with the controller 70; the anaerobic tank 20 is a treatment unit for anaerobic reaction, used for receiving sewage delivered by the water inlet pump; the multi-stage aerobic tank 30 represents a treatment system composed of multiple aerobic treatment units connected in series, including a first-stage aerobic tank 301, a second-stage aerobic tank 302 and a third-stage aerobic tank 303; the anoxic tank 40 is a treatment unit for anaerobic ammonia oxidation reaction; the aerobic section ammonia nitrogen sensor 50 represents an online monitoring device arranged at the outlet of the multi-stage aerobic tank, used for real-time monitoring of the residual ammonia nitrogen concentration in the aerobic section (corresponding to the first ammonia nitrogen concentration value mentioned above); the anoxic section ammonia nitrogen sensor 60 is an online monitoring device installed at the outlet of the anoxic tank, used for real-time monitoring of the ammonia nitrogen concentration of the effluent in the anoxic section (corresponding to the second ammonia nitrogen concentration value mentioned above); and the controller 70 represents the core control unit of the system, electrically connected with each actuator and sensor, used for receiving, processing data and issuing control instructions.

[0031] Specifically, in the running process of the system, the water inlet is first delivered to the anaerobic tank 20 by the water inlet pump 10 for anaerobic treatment. The treated water enters the multi-stage aerobic tank of the multi-stage aerobic tank 30. An aerator is arranged at the bottom of each aerobic tank, and aeration oxygen supply is realized by connection with the electric valve and the fan. The aerobic section ammonia nitrogen sensor 50 monitors the residual ammonia nitrogen concentration of the multi-stage aerobic tank in real time, and the data is transmitted to the controller 70. The water flow continues to enter the anoxic tank 40 for anaerobic ammonia oxidation treatment, and the anoxic section ammonia nitrogen sensor 60 monitors the ammonia nitrogen concentration of the effluent and feeds back to the controller 70. The controller 70 adjusts the water inlet amount and the aeration air volume by adjusting the rotating speed of the water inlet pump and the opening degree of the electric valve according to the monitoring data of the two sensors.

[0032] In the present scheme, the aerobic section ammonia nitrogen sensor 50 and the anoxic section ammonia nitrogen sensor 60 monitor the ammonia nitrogen concentration at the key nodes respectively, providing real-time data support for the controller. Based on these data, the controller 70 adjusts the water inlet amount and the aeration air volume of the multi-stage aerobic tank 30, so that the residual ammonia nitrogen concentration in the aerobic section is maintained within the target interval, and the ammonia nitrogen concentration of the effluent in the anoxic section is less than the preset concentration threshold. At the same time, by setting the linking mechanism of the preset intervals of adjacent debugging stages, the ammonia nitrogen substrate concentration in the anoxic section is gradually increased, creating a favorable environment for the growth and enrichment of anaerobic ammonia oxidation bacteria. This precise control method based on real-time data overcomes the control response lag problem caused by traditional manual sampling and offline analysis, and significantly improves the control accuracy of the system.

[0033] Optionally, with reference to Figure 1 , the multi-stage aerobic tank 30 comprises: a first-stage aerobic tank 301, a second-stage aerobic tank 302, and a third-stage aerobic tank 303. Wherein, the sewage sequentially passes through the anaerobic tank 20, the first-stage aerobic tank 301, the second-stage aerobic tank 302, the third-stage aerobic tank 303, and the anoxic tank 40, and then flows out, and the aerobic section ammonia nitrogen sensor 50 is arranged at the water outlet of the third-stage aerobic tank 303.

[0034] Specifically, the volume ratio of the first-stage aerobic tank 301, the second-stage aerobic tank 302, and the third-stage aerobic tank 303 is 2:1:1, and the system adopts the process flow of "anaerobic-multiple-stage aerobic-anoxic". The influent is first subjected to anaerobic treatment in the anaerobic tank 20 to create conditions for subsequent nitrification. The treated water sequentially enters the first-stage aerobic tank 301, the second-stage aerobic tank 302, and the third-stage aerobic tank 303 to form a gradient nitrification process. The first-stage aerobic tank 301 mainly undertakes the task of removing high-load ammonia nitrogen, the second-stage aerobic tank 302 performs a moderate-intensity nitrification reaction, and the third-stage aerobic tank 303 is responsible for the final fine treatment. The water after the three-stage aerobic treatment is monitored by the aerobic section ammonia nitrogen sensor 50 for concentration, and then enters the anoxic tank 40 for anaerobic ammonia oxidation treatment. In this scheme, different stages of the aerobic tank are allocated different aeration air volumes to adapt to the characteristics of the gradual decrease of pollutant concentration along the way, facilitating the accurate control of the residual ammonia nitrogen in the aerobic section, creating a favorable environment for the growth and enrichment of anaerobic ammonia oxidation bacteria in the subsequent anoxic section, thereby effectively improving the treatment efficiency and operation stability of the entire system.

[0035] The present application provides an AOA process aerobic residual ammonia nitrogen real-time control method, with reference to Figure 2 , Figure 2 is the flow chart of the AOA process aerobic residual ammonia nitrogen real-time control method provided by the embodiments of the present application, comprising: Step S101, monitoring the first ammonia nitrogen concentration value at the water outlet of the multi-stage aerobic tank and the second ammonia nitrogen concentration value at the water outlet of the anoxic tank; Wherein, the multi-stage aerobic tank water outlet represents the water outlet position of the third-stage aerobic tank; the first ammonia nitrogen concentration value refers to the ammonia nitrogen content value detected by the aerobic section ammonia nitrogen sensor; the anoxic tank water outlet represents the water outlet position at the end of the anoxic tank; the second ammonia nitrogen concentration value refers to the ammonia nitrogen content value detected by the anoxic section ammonia nitrogen sensor; monitoring means real-time data acquisition by the sensor.

[0036] Specifically, this step is continuously executed throughout the entire system operation process. The system monitors the water quality of the effluent from the aerobic section and the anoxic tank in real time through two online ammonia nitrogen sensors. The ammonia nitrogen sensor installed at the outlet of the three-stage aerobic tank collects real-time data on the ammonia nitrogen concentration after complete aerobic treatment. The ammonia nitrogen sensor installed at the outlet of the anoxic tank collects real-time data on the ammonia nitrogen concentration of the final effluent. The real-time data from these two monitoring points not only reflect the treatment effect of the system, but also reflect the changes in the process operation state in a timely manner. Among them, the ammonia nitrogen concentration data in the aerobic section directly reflect the nitrification degree and the residual ammonia nitrogen concentration, which can be used to evaluate the treatment capacity and control requirements of the aerobic tank. The ammonia nitrogen concentration data in the anoxic section reflect the final treatment effect of the entire system, which can be used to judge whether the effluent meets the standard. This dual-point monitoring method can not only detect abnormal conditions in the treatment unit in a timely manner, but also accurately evaluate the overall performance of the system, providing reliable data support for subsequent precise control.

[0037] In step S102, n debugging stages are continuously executed to maintain the first ammonia nitrogen concentration value in a target preset interval and the second ammonia nitrogen concentration value less than a preset concentration threshold. In the above embodiment, the debugging stage represents different optimization stages in the system operation process; n represents the total number of debugging stages that the system needs to go through; the target preset interval refers to the ammonia nitrogen concentration control range that the system ultimately needs to achieve; and continuous execution means that each debugging stage is performed in a predetermined order.

[0038] Specifically, this step is executed at the beginning of system startup. The system divides the entire debugging process into multiple consecutive stages in advance. Each stage has a different ammonia nitrogen concentration control target. In each debugging stage, the system dynamically adjusts the operating parameters based on real-time monitoring data until the control target of that stage is reached. When the control target of a stage is continuously and stably achieved for a preset period of time, the system enters the next more stringent control stage. This progressive debugging method takes into account the adaptive characteristics of microbial systems and avoids the adverse effects of drastic parameter changes on treatment effectiveness. At the same time, by dividing the debugging process into multiple stages, the system can focus on solving specific operational problems in each stage, gradually optimizing various parameters, and ultimately achieving stable and standard operation. This not only improves the success rate of debugging, but also lays a good foundation for long-term stable operation of the system.

[0039] Specifically, refer to Figure 3 , Figure 3 A debugging stage method flowchart is provided for the embodiments of the present application, wherein n is a positive integer greater than or equal to 2, i is a positive integer less than n, and the i-th debugging stage is executed according to the following steps: Step S201, according to the first ammonia nitrogen concentration value in real time adjusting the influent quantity of sewage and the aeration air quantity of the multi-stage aerobic tank, so that the first ammonia nitrogen concentration value is in the i preset interval, and according to the second ammonia nitrogen concentration value in real time adjusting the aeration air quantity of the multi-stage aerobic tank so that the second ammonia nitrogen concentration value is less than the preset concentration threshold.

[0040] Wherein, the influent quantity represents the volume of sewage entering the system per unit time; the aeration air quantity refers to the gas flow into the aerobic tank; the i preset interval represents the ammonia nitrogen concentration control range set in the i debugging stage; the preset concentration threshold refers to the upper limit value of the ammonia nitrogen concentration allowed by the anoxic tank effluent; real-time adjustment means timely changing the operating parameters according to the monitoring data.

[0041] Specifically, this step is executed continuously in each debugging stage, and a double linkage control mechanism is constructed. The system first monitors the residual ammonia nitrogen concentration in the multi-stage aerobic tank through the ammonia nitrogen sensor in the aerobic section. When the detection value deviates from the preset interval of the current stage, two key parameters are adjusted simultaneously: one is to adjust the rotation speed of the influent pump to change the influent quantity, and the other is to adjust the frequency of the air blower to change the aeration air quantity. This double-parameter linkage adjustment can quickly adjust the ammonia nitrogen concentration to the target interval. At the same time, the system monitors the final effluent quality through the ammonia nitrogen sensor in the anoxic section. When the detection value approaches the preset threshold, the aeration air quantity of the aerobic tank is adjusted to strengthen the nitrification process, ensuring that the effluent always meets the standard. This hierarchical control strategy not only ensures the transition optimization of the system, but also realizes the stable standard of the effluent.

[0042] In some embodiments, the double linkage control can be achieved in various ways: Optionally, a primary and secondary priority control scheme is adopted: first, set the influent quantity adjustment as the main control means; second, start the aeration air quantity adjustment when the influent quantity adjustment reaches the limit; then, dynamically adjust the proportion of the two according to the response effect; finally, realize the coordinated optimization of parameters.

[0043] Optionally, a segmented decoupling control scheme is adopted: first, divide the ammonia nitrogen concentration deviation range; second, select different control strategies for different deviation ranges; then, execute the corresponding parameter adjustment scheme; finally, evaluate the adjustment effect and optimize the control parameters.

[0044] It can be understood that other control strategies can also be used to realize the linkage adjustment of system parameters, which are not limited here.

[0045] Step S202, when i is less than n, and the duration that the second ammonia concentration value is less than the preset concentration threshold is greater than the ith preset duration, an (i+1)th debugging stage is executed, the (i+1)th debugging stage is the next debugging stage of the ith debugging stage, the upper limit of the interval of the ith preset interval is equal to the lower limit of the interval of the (i+1)th preset interval, and the (i+1)th preset interval is a preset interval of the first ammonia concentration value corresponding to the (i+1)th debugging stage.

[0046] wherein the preset duration represents a time requirement for the system to remain stable operation; i is less than n represents that the current is not the last debugging stage; the (i+1)th debugging stage represents a next more stringent control stage; the upper limit of the interval and the lower limit of the interval represent the maximum value and the minimum value of the preset interval respectively; and the connection of adjacent intervals represents a smooth transition between different debugging stages.

[0047] Specifically, the step is responsible for controlling the conversion process of the debugging stage. The system monitors two key indicators in real time: one is to judge whether the current is the final debugging stage (whether i is less than n), and the other is to evaluate the stability of the effluent water quality of the anoxic section (whether the duration that the second ammonia concentration value is continuously less than the preset concentration threshold meets the requirement). When the two conditions are met at the same time, the system will start the stage conversion. In the conversion process, by setting the ammonia control interval of adjacent debugging stages to have an overlap (the upper limit of the interval of the previous stage is equal to the lower limit of the interval of the next stage), the smooth transition of the control target is ensured. This stage conversion mechanism based on stability evaluation not only guarantees the debugging effect of each stage, but also avoids the system fluctuation caused by too fast conversion.

[0048] It should be noted that when the last debugging stage is reached, the system no longer monitors whether the duration that the second ammonia concentration value is continuously less than the preset concentration threshold meets the preset duration, at this time the system only performs regulation and maintenance to keep the second ammonia concentration value continuously less than the preset concentration threshold and the first ammonia concentration value in the preset interval.

[0049] In some embodiments, the conversion control of the debugging stage can be realized in various ways: Optionally, a comprehensive evaluation conversion scheme is adopted: first, multiple evaluation indexes including ammonia concentration, operating parameters, etc. are established; second, the weight coefficients of the indexes are set; third, the system comprehensive score is calculated; and finally, whether to convert the stage is determined according to the score.

[0050] Optionally, a gradual conversion scheme is adopted: first, a transition period is entered after the conversion condition is met; second, the control target is gradually tightened; third, the system response is evaluated; and finally, the stage conversion is completed.

[0051] It can be understood that other ways can also be used to realize the conversion control of the debugging stage, which is not limited here.

[0052] The method provided by the embodiment is further described in detail below.

[0053] Optionally, S20101 to S20102 are more specific solutions of step S201 in the embodiment.

[0054] S20101, when the first ammonia nitrogen concentration value is less than the lower limit of the i-th preset interval, increasing the water inflow to increase the first ammonia nitrogen concentration value; Specifically, this step is executed when the residual ammonia nitrogen concentration in the aerobic section is detected to be lower than the lower limit of the control in the current debugging stage. The system increases the water inflow by increasing the rotation speed of the water inflow pump, thereby increasing the ammonia nitrogen load of the system. This control strategy is based on the following principles: first, increasing the water inflow directly increases the total amount of ammonia nitrogen entering the system, thereby increasing the ammonia nitrogen load entering the system per unit time; second, the increase in the water inflow shortens the hydraulic retention time, thereby reducing the contact time between nitrifying bacteria and ammonia nitrogen and weakening the degree of nitrification reaction, and the combined action of these two factors gradually increases the residual ammonia nitrogen concentration.

[0055] S20102, when the first ammonia nitrogen concentration value is in the i-th preset interval, keeping the water inflow unchanged to keep the first ammonia nitrogen concentration value in the i-th preset interval; Specifically, this step is continuously executed when the ammonia nitrogen concentration is in the target interval. When the residual ammonia nitrogen concentration in the aerobic section is monitored to be in the preset interval, the system locks the current water inflow pump frequency to keep the water inflow stable. When this step is executed, the system continuously monitors the operating state of the water inflow pump, including the current, pressure and other parameters, to ensure that the water inflow equipment operates in a stable interval. At the same time, the system also monitors the fluctuation of the water quality index to provide an early warning for possible water quality fluctuations while keeping the water inflow stable. This steady-state control strategy not only maintains the biochemical balance of the system and ensures the stability of the effluent water quality, but also improves the overall operation efficiency and economy of the system.

[0056] Optionally, S20103 to S20104 are more specific solutions of step S201 in the embodiment.

[0057] S20103, when the first ammonia nitrogen concentration value is greater than the upper limit of the i-th preset interval, reducing the first ammonia nitrogen concentration value by increasing the first aeration air volume of the primary aerobic tank and the second aeration air volume of the secondary aerobic tank; when the first aeration air volume is increased to a preset first maximum value and the second aeration air volume is increased to a preset second maximum value, and the first ammonia nitrogen concentration value is greater than the upper limit of the i-th preset interval, keeping the first ammonia nitrogen concentration value in the i-th preset interval by reducing the water inflow; Specifically, this step is executed in two stages when the ammonia nitrogen concentration exceeds the standard, and a complete emergency response mechanism is constructed. In the first stage of control, when it is detected that the residual ammonia nitrogen concentration in the aerobic section exceeds the upper limit, the system first synchronously increases the aeration amount of the first and second aerobic tanks. This control strategy is based on the following considerations: first, increasing the aeration amount can rapidly increase the dissolved oxygen concentration in the water, providing more sufficient oxygen for nitrifying bacteria, thereby strengthening the nitrification reaction capacity; the system will use different aeration amount adjustment strategies according to the extent of the ammonia nitrogen concentration exceeding the standard, to ensure the accuracy of the adjustment. If the ammonia nitrogen concentration still exceeds the standard after the aeration amount reaches the maximum value, the system starts the second stage of control, which reduces the system load by reducing the inflow. This strategy chooses to adjust the aeration wind amount rather than the inflow, mainly based on two considerations: first, adjusting the aeration wind amount has faster response speed and higher controllability than adjusting the inflow, and can more quickly stabilize the system; second, by preferentially adjusting the aeration wind amount to reduce the ammonia nitrogen concentration, a larger water treatment capacity can be maintained, improving the system's processing capacity. This fine-tuned control mechanism based on multiple condition judgments and preferential adjustment of the aeration wind amount not only ensures the system's rapid response capability, but also optimizes the balance between processing efficiency and operating cost.

[0058] S20104, when the first ammonia nitrogen concentration value is less than the interval lower limit of the i-th preset interval, and the first aeration wind amount is equal to the preset first maximum value and the second aeration wind amount is equal to the preset second maximum value, the first aeration wind amount and the second aeration wind amount are reduced to increase the first ammonia nitrogen concentration value; when the first aeration wind amount is reduced to a preset first minimum value and the second aeration wind amount is reduced to a preset second minimum value, and the first ammonia nitrogen concentration value is less than the interval lower limit of the i-th preset interval, the inflow is increased to keep the first ammonia nitrogen concentration value in the i-th preset interval; Specifically, this step is executed in two stages under special working conditions, mainly for the abnormal condition of low ammonia nitrogen and high aeration. In the first stage of control, when it is detected that the ammonia nitrogen concentration is below the interval lower limit and the aeration amount is at the maximum value, the system first synchronously reduces the aeration amount of the two aerobic tanks. This control strategy is based on the following principles: first, too high aeration amount will cause the nitrification reaction to proceed excessively, not only wasting energy, but also causing the residual ammonia nitrogen concentration to be too low; the system will use a progressive reduction in aeration amount to ensure the stability of the adjustment according to the specific situation of the ammonia nitrogen concentration. If the ammonia nitrogen concentration is still too low after being reduced to the minimum aeration amount, the system starts the second stage of control, which increases the load by increasing the inflow. This staged control strategy not only considers the biochemical balance of the system, but also realizes the rational use of energy.

[0059] Optionally, in this scheme, the first aeration air volume and the second aeration air volume are determined according to the third aeration air volume of the third aerobic tank according to a preset proportional relationship, and the multi-stage aerobic tank includes the third aerobic tank.

[0060] The operation of increasing the first aeration air volume of the first-stage aerobic tank and the second aeration air volume of the second-stage aerobic tank is specifically: increasing the first aeration air volume and the second aeration air volume in a step-by-step manner, wherein the increasing amount of the first aeration air volume is greater than the increasing amount of the second aeration air volume in each increasing process. The operation of decreasing the first aeration air volume of the first-stage aerobic tank and the second aeration air volume of the second-stage aerobic tank is specifically: decreasing the first aeration air volume and the second aeration air volume in a step-by-step manner, wherein the decreasing amount of the first aeration air volume is greater than the decreasing amount of the second aeration air volume in each decreasing process.

[0061] Wherein, the step-by-step increase / decrease means adjusting the parameter in a step-by-step manner according to a preset step length; the increasing amount / decreasing amount refers to the change amplitude of the parameter in each adjustment.

[0062] Specifically, the two operations describe the specific execution mode of the system in adjusting the aeration air volume. In the adjustment process, the system adopts a step-by-step control strategy, that is, the large parameter adjustment is divided into multiple small step-by-step continuous adjustments, which can avoid the impact of parameter mutation on the system. At the same time, the system adopts a differentiated regulation scheme for the two aerobic tanks: the adjustment amplitude of the first-stage aerobic tank is always greater than that of the second-stage aerobic tank (based on the volume ratio of 2:1 between the first-stage aerobic tank and the second-stage aerobic tank mentioned in the foregoing, the adjustment amplitude ratio of the first-stage aerobic tank to the second-stage aerobic tank is usually 2:1). This differentiated regulation strategy is based on the following reasons: first, the first-stage aerobic tank directly receives high-concentration influent and bears the main ammonia nitrogen removal load, which requires more adjustment margin to cope with load fluctuations; second, the series structure of the two-stage aerobic tank makes the second-stage aerobic tank receive water quality that has been preliminarily treated, and the pollutant concentration is relatively low, so the second-stage aerobic tank is more sensitive to aeration amount adjustment; third, the differentiated regulation can form a gradient treatment effect, improving the overall treatment efficiency and impact resistance of the system.

[0063] Optionally, the adjustment of the first aeration air volume of the first-stage aerobic tank and the second aeration air volume of the second-stage aerobic tank is based on the third aeration air volume of the third aerobic tank.

[0064] Specifically, the first aeration air volume, the second aeration air volume, and the third aeration air volume are denoted as q1, q2, and q3 respectively, and q1=α·q3, q2=β·q3, the value range of α can refer to 1.5~3, and the value range of β can refer to 1~1.5, The scheme establishes a linkage control mechanism of aeration quantity based on proportional relationship. The system takes the aeration quantity of the third-stage aerobic tank as the reference parameter, and determines the aeration quantity of the first-stage and second-stage aerobic tanks according to the fixed proportional relationship. This control strategy has multiple advantages: first, from the perspective of pollutant concentration gradient, the ammonia nitrogen concentration of the influent of the first-stage aerobic tank is the highest (α is 1.5-3), which requires the largest aeration quantity to support nitrification, the ammonia nitrogen concentration of the influent of the second-stage aerobic tank is the second, and the ammonia nitrogen concentration of the influent of the third-stage aerobic tank is the lowest. This proportional relationship is highly consistent with the actual treatment load characteristics; second, the fixed proportional relationship can realize automatic linkage adjustment of the aeration quantity of the three aerobic tanks, simplifies the control logic, and improves the reliability of the control; third, reasonable proportion setting can ensure that the dissolved oxygen distribution of the aerobic tanks presents a gradient change, which meets the treatment requirements and avoids energy waste; finally, this proportional control method makes the system have good scalability. When the treatment load changes, only the reference aeration quantity q3 needs to be adjusted, and other parameters can automatically adapt to the adjustment. During the operation of the system, the running state of each stage of the aerobic tank is continuously monitored to ensure the rationality of the proportional relationship.

[0065] Optionally, S20105 to S20106 are more specific solutions of step S201 in the embodiments of the present application.

[0066] S20105, when the second ammonia nitrogen concentration value is greater than or equal to the preset concentration threshold, increasing the third aeration air volume of the third-stage aerobic tank to reduce the second ammonia nitrogen concentration value, wherein the multi-stage aerobic tank includes the third-stage aerobic tank; Specifically, this step is executed when the system detects that the final effluent ammonia nitrogen concentration exceeds the control threshold. When the anoxic section effluent ammonia nitrogen concentration is higher than or equal to the preset threshold, the system will increase the aeration quantity of the third-stage aerobic tank, and at the same time, this step also adopts the step-by-step control strategy. Since the aeration quantity of the third-stage aerobic tank is the reference parameter (q3) of the aeration quantity control of the whole system, its increasing process will drive the aeration quantity of the first-stage and second-stage aerobic tanks to increase synchronously through the proportional relationship (q1=α·q3, q2=β·q3). The design of this control strategy is mainly because the third-stage aerobic tank is the last processing barrier of the system, and its processing effect has the most direct influence on the final effluent water quality. When the system executes the aeration quantity adjustment, it will monitor this end-strengthening control strategy in real time, which can ensure that the effluent meets the standards while maximizing the processing potential of the system.

[0067] S20106, when the second ammonia nitrogen concentration value decreases to less than the preset concentration threshold, controlling the third aeration air volume to decrease to the initial third aeration air volume; Specifically, this step is executed after the ammonia nitrogen concentration of the effluent returns to the standard. When the system detects that the ammonia nitrogen concentration of the effluent in the anoxic section decreases below the threshold value, the aeration amount of the third aerobic tank will be gradually adjusted back to the initial value. Since the aeration amount of the third aerobic tank is the benchmark parameter (q3) of the aeration amount regulation of the entire system, its return to the initial value will drive the aeration amounts of the first and second aerobic tanks to decrease simultaneously through a proportional relationship (q1=α·q3, q2=β·q3). This proportional relationship-based linkage regulation has the following advantages: first, the aeration amounts of the three aerobic tanks can maintain a coordinated gradient relationship, avoiding insufficient or excessive oxygen supply in a certain tank section; second, the regulation based on q3 makes the system regulation more simple and intuitive, and the operation personnel only need to focus on the change of the aeration amount of the third aerobic tank; third, the automatic linkage feature can reduce the regulation link and improve the response speed of the system; and finally, this regulation method can ensure that the system maintains stable treatment effect while reducing energy consumption. During the aeration amount recovery process, the system will continuously monitor the dissolved oxygen levels and treatment effects of each tank section to ensure smooth transition of the entire system.

[0068] Optionally, the present scheme can also execute step S103.

[0069] Step S103, when increasing the influent amount, simultaneously increasing the first aeration air volume of the first aerobic tank and the second aeration air volume of the second aerobic tank within a target preset time length.

[0070] Wherein, the influent amount represents the influent flow of the system; the target preset time length refers to the duration of synchronous adjustment; the first aeration air volume and the second aeration air volume represent the air supply amounts of the first and second aerobic tanks, respectively.

[0071] Specifically, this step is executed simultaneously when the system increases the influent amount. When the system increases the influent amount, the aeration amounts of the first and second aerobic tanks will be simultaneously increased within a preset time period. This coordinated control strategy is based on the following principles: first, an increase in influent amount will result in a greater pollutant load, which requires a corresponding increase in oxygen supply to maintain treatment effect; second, timely increasing the aeration amount can prevent a decrease in treatment efficiency caused by a sudden increase in load; third, the simultaneous adjustment of the two-stage aerobic tank can ensure that the treatment capacity of the entire aerobic system matches the increased load requirement. When executing the coordinated adjustment, the system will reasonably allocate the aeration amount increase proportion of the two aerobic tanks in combination with the increase amplitude of the influent amount, to ensure smooth transition of the treatment effect. This anticipatory coordinated control strategy can effectively prevent load shocks and ensure stable operation of the system.

[0072] The present application also provides a computer-readable storage medium having instructions stored therein, which, when executed, perform the method steps of any of the above.

[0073] In an example embodiment, the computer readable storage medium described above can include, but is not limited to, a U disk, a read-only memory (ROM), a random access memory (RAM), a mobile hard disk, a magnetic disk or an optical disk, and various media that can store computer programs.

[0074] The application also discloses an electronic device. As shown in Figure 4 Figure 4 is a structural schematic diagram of an electronic device disclosed by the application. The electronic device 400 can include at least one processor 401, at least one communication bus 402, a user interface 403, at least one network interface 404, and a memory 405.

[0075] The communication bus 402 is used to realize the connection and communication between the components.

[0076] The user interface 403 can include a display screen (Display) and a camera (Camera). Optionally, the user interface 403 can further include a standard wired interface and a wireless interface.

[0077] The network interface 404 can optionally include a standard wired interface and a wireless interface (such as a WI-FI interface).

[0078] The processor 401 can include one or more processing cores. The processor 401 connects various parts in the entire electronic device (such as a server) by using various interfaces and lines, executes various functions of the server and processes data by running or executing instructions, programs, code sets or instruction sets stored in the memory 405, and calling data stored in the memory 405. Optionally, the processor 401 can be realized in at least one of a hardware form of a digital signal processing (DSP), a field-programmable gate array (FPGA), and a programmable logic array (PLA). The processor 401 can be integrated with a combination of one or more of a central processing unit (CPU), a graphics processing unit (GPU), and a modem. The CPU is mainly used to process an operating system, a user interface, and an application program. The GPU is used to render and draw the content to be displayed on the display screen. The modem is used to process wireless communication. It can be understood that the above-mentioned modem can also not be integrated into the processor 401, but can be realized by a separate chip.​

[0079] The memory 405 can include a Random Access Memory (RAM) and can also include a Read-Only Memory (ROM). Optionally, the memory 405 includes a non-transitory computer-readable storage medium. The memory 405 can be used to store instructions, programs, codes, code sets, or instruction sets. The memory 405 can include a program storage area and a data storage area, where the program storage area can store instructions for implementing an operating system, instructions for at least one function (such as a touch function, a sound playing function, an image playing function, etc.), instructions for implementing the various method embodiments described above, etc.; the data storage area can store data involved in the various method embodiments described above, etc. The memory 405 can optionally be at least one storage device located away from the aforementioned processor 401. Referring to Figure 4 , the memory 405 as a computer storage medium can include an operating system, a network communication module, a user interface module, and an application program of an AOA process aerobic residual ammonia nitrogen real-time control method.

[0080] In Figure 4 , the user interface 403 is mainly used to provide an interface for user input and obtain user input data; and the processor 401 can be used to invoke an application program of an AOA process aerobic residual ammonia nitrogen real-time control method stored in the memory 405, and when executed by one or more processors 401, the electronic device 400 performs the method described in one or more of the above embodiments. It should be noted that, for the foregoing method embodiments, in order to simply describe, they are all described as a series of action combinations, but those skilled in the art should know that the present application is not limited to the described action sequence, because according to the present application, certain steps can be performed in other sequences or simultaneously. Secondly, those skilled in the art should know that the embodiments described in the specification all belong to preferred embodiments, and the actions and modules involved are not necessarily required by the present application.

[0081] In the above embodiments, the description of each embodiment has its own focus, and the parts not described in detail in a certain embodiment can be referred to the relevant description of other embodiments.

[0082] In several embodiments provided in the present application, it should be understood that the disclosed apparatus or system can be implemented in other manners. For example, the division of the apparatus or system embodiments described above is merely an example, and the units can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the coupling or direct coupling or communication connection between the units shown or discussed can be indirect coupling or communication connection through some interfaces, and can be in electrical or other forms.

[0083] The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, i.e., they can be located in one place, or distributed on multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the embodiment.

[0084] In addition, the functional units in each embodiment of the present application can be integrated into one processing unit, or each unit can be physically present separately, or two or more units can be integrated into one unit. The integrated unit can be realized in the form of hardware or in the form of a software functional unit.

[0085] If the integrated unit is realized in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer readable memory. Based on this understanding, the technical solutions of the present application essentially or the part of the prior art that contributes to the technical solutions or the whole or part of the technical solutions can be embodied in the form of a software product, which is stored in a memory and includes a plurality of instructions for causing a computer device (which can be a personal computer, a server or a network device, etc.) to execute all or part of the steps of the embodiments of the present application. The aforementioned memory includes: U disk, mobile hard disk, magnetic disk or optical disk, and various media that can store program codes.

[0086] The above is only exemplary embodiments of the present disclosure, and cannot limit the scope of the present disclosure. That is, any equivalent changes and modifications made in accordance with the teachings of the present disclosure are still within the scope of the present disclosure. Those skilled in the art will easily think of other embodiments of the present disclosure after considering the disclosure of the specification.

[0087] The present application is intended to cover any variations, uses or adaptive changes of the present disclosure that follow the general principles of the present disclosure and include common knowledge or conventional technical means in the technical field not disclosed in the present disclosure.

Claims

1. A real-time control system for aerobic residual ammonia nitrogen in an AOA process, characterized in that, include: Inlet pump, anaerobic tank, multi-stage aerobic tank, anoxic tank, ammonia nitrogen sensor for aerobic section, ammonia nitrogen sensor and controller for anoxic section; The ammonia nitrogen sensor in the aerobic section is installed at the outlet of the multi-stage aerobic tank to monitor the first ammonia nitrogen concentration value at the outlet of the multi-stage aerobic tank; the ammonia nitrogen sensor in the anoxic section is installed at the outlet of the anoxic tank to monitor the second ammonia nitrogen concentration value at the outlet of the anoxic tank. The water inlet pump, the aerobic section ammonia nitrogen sensor, and the anoxic section ammonia nitrogen sensor are all electrically connected to the controller. The controller continuously executes n debugging stages to maintain the first ammonia nitrogen concentration value within the target preset range and the second ammonia nitrogen concentration value less than the preset concentration threshold. The i-th debugging stage is any one of the n debugging stages, and the i-th debugging stage is executed according to the following steps: The wastewater inflow and the aeration volume of the multi-stage aerobic tank are adjusted in real time according to the first ammonia nitrogen concentration value so that the first ammonia nitrogen concentration value is within the i-th preset range, and the aeration volume of the multi-stage aerobic tank is adjusted in real time according to the second ammonia nitrogen concentration value so that the second ammonia nitrogen concentration value is less than the preset concentration threshold. When i is less than n and the duration for which the second ammonia nitrogen concentration value is less than the preset concentration threshold is greater than the i-th preset duration, the (i+1)-th debugging stage is executed. The (i+1)-th debugging stage is the next debugging stage after the i-th debugging stage. The upper limit of the i-th preset interval is equal to the lower limit of the (i+1)-th preset interval. The (i+1)-th preset interval is a preset interval of the first ammonia nitrogen concentration value corresponding to the (i+1)-th debugging stage.

2. The system according to claim 1, characterized in that, The multi-stage aerobic tank includes: a primary aerobic tank, a secondary aerobic tank, and a tertiary aerobic tank; The wastewater passes through an anaerobic tank, a primary aerobic tank, a secondary aerobic tank, a tertiary aerobic tank, and an anoxic tank in sequence before flowing out. The ammonia nitrogen sensor in the aerobic section is installed at the outlet of the tertiary aerobic tank.

3. A method for real-time control of residual ammonia nitrogen in an aerobic process (AOA), applied to the system described in any one of claims 1-2, characterized in that, Includes the following steps: Monitor the first ammonia nitrogen concentration at the outlet of the multi-stage aerobic tank and the second ammonia nitrogen concentration at the outlet of the anoxic tank; Execute n consecutive debugging phases to maintain the first ammonia nitrogen concentration value within the target preset range and the second ammonia nitrogen concentration value below a preset concentration threshold, wherein the i-th debugging phase is any one of the n debugging phases, and the i-th debugging phase is executed according to the following steps: The wastewater inflow and the aeration volume of the multi-stage aerobic tank are adjusted in real time according to the first ammonia nitrogen concentration value so that the first ammonia nitrogen concentration value is within the i-th preset range, and the aeration volume of the multi-stage aerobic tank is adjusted in real time according to the second ammonia nitrogen concentration value so that the second ammonia nitrogen concentration value is less than the preset concentration threshold. When i is less than n and the duration for which the second ammonia nitrogen concentration value is less than the preset concentration threshold is greater than the i-th preset duration, the (i+1)-th debugging stage is executed. The (i+1)-th debugging stage is the next debugging stage after the i-th debugging stage. The upper limit of the i-th preset interval is equal to the lower limit of the (i+1)-th preset interval. The (i+1)-th preset interval is a preset interval of the first ammonia nitrogen concentration value corresponding to the (i+1)-th debugging stage.

4. The method according to claim 3, characterized in that, The step of adjusting the influent flow rate of wastewater and the aeration volume of the multi-stage aerobic tank in real time according to the first ammonia nitrogen concentration value, so that the first ammonia nitrogen concentration value is within the i-th preset range, specifically includes: When the first ammonia nitrogen concentration value is less than the lower limit of the i-th preset interval, the influent flow rate is increased to increase the first ammonia nitrogen concentration value; When the first ammonia nitrogen concentration value is within the i-th preset range, the influent flow rate is kept constant so that the first ammonia nitrogen concentration value is within the i-th preset range.

5. The method according to claim 3, characterized in that, The step of adjusting the influent flow rate of wastewater and the aeration volume of the multi-stage aerobic tank in real time according to the first ammonia nitrogen concentration value, so that the first ammonia nitrogen concentration value is within the i-th preset range, further includes: When the first ammonia nitrogen concentration is greater than the upper limit of the i-th preset interval, the first ammonia nitrogen concentration is reduced by increasing the first aeration air volume of the primary aerobic tank and the second aeration air volume of the secondary aerobic tank; when the first aeration air volume is increased to a preset first maximum value and the second aeration air volume is increased to a preset second maximum value, and the first ammonia nitrogen concentration is greater than the upper limit of the i-th preset interval, the influent flow rate is reduced so that the first ammonia nitrogen concentration is within the i-th preset interval; wherein, the multi-stage aerobic tank includes the primary aerobic tank and the secondary aerobic tank; When the first ammonia nitrogen concentration is less than the lower limit of the i-th preset interval, and the first aeration volume is equal to the preset first maximum value and the second aeration volume is equal to the preset second maximum value, the first ammonia nitrogen concentration is increased by reducing the first aeration volume and the second aeration volume; when the first aeration volume is reduced to the preset first minimum value and the second aeration volume is reduced to the preset second minimum value, and the first ammonia nitrogen concentration is less than the lower limit of the i-th preset interval, the influent volume is increased to make the first ammonia nitrogen concentration fall within the i-th preset interval.

6. The method according to claim 5, characterized in that, The first aeration volume and the second aeration volume are determined according to a preset ratio based on the third aeration volume of the three-stage aerobic tank, and the multi-stage aerobic tank includes the three-stage aerobic tank. The steps of increasing the first aeration volume of the primary aerobic tank and the second aeration volume of the secondary aerobic tank specifically include: increasing the first aeration volume and the second aeration volume in a step-by-step manner, wherein the increase in the first aeration volume is greater than the increase in the second aeration volume in each increase process; The step of reducing the first aeration volume of the primary aerobic tank and the second aeration volume of the secondary aerobic tank specifically includes: reducing the first aeration volume and the second aeration volume in a step-by-step manner, wherein the reduction in the first aeration volume is greater than the reduction in the second aeration volume in each reduction process.

7. The method according to claim 3, characterized in that, The step of adjusting the aeration volume of the multi-stage aerobic tank in real time according to the second ammonia nitrogen concentration value to make the second ammonia nitrogen concentration value less than the preset concentration threshold specifically includes: When the second ammonia nitrogen concentration value is greater than or equal to the preset concentration threshold, the third aeration air volume of the three-stage aerobic tank is increased to reduce the second ammonia nitrogen concentration value, wherein the multi-stage aerobic tank includes the three-stage aerobic tank; When the second ammonia nitrogen concentration value decreases to less than the preset concentration threshold, the third aeration air volume is controlled to decrease to the initial third aeration air volume.

8. The method according to claim 3, characterized in that, The method further includes: When the influent flow rate is increased, the first aeration air volume of the primary aerobic tank and the second aeration air volume of the secondary aerobic tank are increased simultaneously within the target preset time period.

9. An electronic device comprising a memory and a processor, wherein the memory stores a computer program, characterized in that, When the processor executes the program, it implements the method as described in any one of claims 3 to 8.

10. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores instructions that, when executed, perform the method as described in any one of claims 3 to 8.

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