Aeration control method for sewage treatment plant
By quantifying polygon monitoring parameters and employing segmented debugging strategies, the problems of fragmented monitoring data and lack of debugging strategies in the aeration system of wastewater treatment plants were solved, achieving efficient and stable operation and energy consumption optimization of the aeration system.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-01-27
- Publication Date
- 2026-04-14
AI Technical Summary
Existing aeration control technologies in wastewater treatment plants suffer from fragmented monitoring data and a lack of clear single-stage optimization logic in debugging strategies, resulting in low operating efficiency, high energy consumption, and unstable treatment effects of the aeration system.
By using polygon monitoring parameter quantification and segmented debugging strategies, the entire aeration control process is optimized, including the simultaneous quantification of multiple water quality parameters, setting primary and secondary verification cycles, and adjusting the opening of electric valves segment by segment to ensure precise adjustment of the aeration system.
It achieves visualization and integration of multi-dimensional parameters, improves the completeness and accuracy of monitoring data, accurately locks the optimal adjustment direction for each segment, reduces energy consumption, and improves the stability of processing results.
Smart Images
Figure CN121850226A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of wastewater treatment plant technology, specifically to an aeration control method for wastewater treatment plants. Background Technology
[0002] In the activated sludge process of wastewater treatment plants, the quality of commissioning and control of the aeration system directly determines the wastewater purification effect and energy consumption level, making it a core aspect of process operation. Current aeration control technologies generally suffer from shortcomings in three main areas: monitoring, verification, and commissioning. These shortcomings make it difficult to adapt to the varying operating conditions along the aeration tank, thus limiting the operational efficiency and stability of the aeration system.
[0003] From a monitoring perspective, traditional aeration control often employs a single-point, decentralized water quality parameter monitoring model, collecting and recording multiple indicators such as DO, COD concentration, and ammonia nitrogen concentration at the inlet and outlet separately, lacking a unified quantitative integration mechanism. The independent presentation of different parameters easily leads to fragmented data, failing to intuitively reflect the synergistic changes of each parameter, and making it difficult to comprehensively assess the status of the entire wastewater purification process through multi-dimensional parameters. This results in a rather one-sided data analysis support for subsequent commissioning and control.
[0004] In terms of commissioning strategies, existing solutions mostly adopt a method of overall synchronous adjustment using electric regulating valves throughout the entire aeration tank, neglecting the differences in process requirements between different areas of the aeration tank. The front section of the aeration tank receives high-load influent, with a strong demand for the degradation of organic matter and ammonia nitrogen, requiring sufficient oxygen supply. The middle section, as the core area of nitrification, has extremely high requirements for dissolved oxygen stability. In the rear section, pollutants have been largely degraded, requiring only low-load oxygen supply to maintain the nitrification reaction and prevent local hypoxia. This characteristic of decreasing load along the process is ignored by the traditional overall commissioning method, which easily leads to problems such as insufficient aeration in the front section, incomplete pollutant degradation, fluctuating aeration in the middle section, unstable nitrification reaction, and over-aeration and serious energy waste in the rear section. At the same time, existing commissioning lacks a clear single-section optimization logic, and only adjusts based on overall effect feedback, which cannot accurately lock the optimal adjustment direction for each section. The commissioning process is highly blind and inefficient, and it is difficult to adapt to complex and ever-changing operating conditions, ultimately leading to common pain points in the industry such as uneven oxygen supply throughout the tank, fluctuating treatment effects, and high energy consumption.
[0005] To address the shortcomings of the existing technologies, this application provides an aeration control method for wastewater treatment plants. By innovatively designing quantitative monitoring of parameters, scientifically verifying logic, and employing precise segmented debugging strategies, it optimizes the entire aeration control process and solves many problems existing in the prior art. Summary of the Invention
[0006] To address the shortcomings of existing technologies, this invention provides an aeration control method for wastewater treatment plants, which solves the problem that existing debugging methods lack clear single-segment optimization logic and rely solely on overall effect feedback for adjustment, making it impossible to accurately lock the optimal adjustment direction for each segment.
[0007] To achieve the above objectives, the present invention provides the following technical solution: an aeration control method for wastewater treatment plants, comprising the following steps: Step 1: Real-time monitoring of various parameters at the inlet and outlet of the wastewater treatment tank. Simultaneously quantify multiple monitoring parameters onto the same polygon, identify the corresponding monitoring points within the polygon, and then, based on the monitoring progress, determine and record the monitoring verification chart. The specific method is as follows: Based on the different monitoring sensors installed at the inlet and outlet of the sewage treatment tank, the different monitoring parameters associated with them are monitored in real time. Based on the total number G of the monitoring parameters, polygons with the same sides are generated, where the total number of corresponding sides corresponds to the value of G. The center point o of the polygon is determined, and then the different corner points associated with the polygon are determined. The quantized edge lines associated with the center point o to the corner points are confirmed, so that each set of quantized edge lines corresponds to different monitoring parameters one by one. After each set of quantization boundary lines is associated with the monitoring parameters, a corresponding quantization standard is assigned to each set of quantization boundary lines. Based on the assigned quantization standard, the quantization points associated with the corresponding monitoring parameters on the corresponding quantization boundary lines are confirmed. The quantization points associated with multiple sets of quantization boundary lines are connected sequentially to confirm the quantization polygon associated with multiple sets of quantization points. The quantization polygon confirmed at the corresponding time is used as the recorded monitoring verification chart. The various monitoring parameters of the inlet and outlet are monitored in real time in sequence, and the monitoring verification chart associated at the corresponding time is generated. Step 2: Based on the volume of the wastewater treatment tank and the effluent flow rate at the outlet, determine the discharge time of the wastewater treatment tank. Then, based on the discharge time, determine the verification period associated with the inlet and outlet. Perform a comprehensive verification of the monitoring and verification charts associated with the verification period to confirm the verification characteristics. The specific method is as follows: The volume of the sewage treatment tank is marked as R, and the effluent flow rate of the outlet is marked as L. Using R÷L=T, the discharge duration T associated with the sewage treatment tank is confirmed. The current time is taken as the calibration time Jz. The calibration period for the inlet is confirmed as the primary calibration period and calibrated as [Jz, Jz+t], where t is a preset value. The calibration period for the outlet is then confirmed as the secondary calibration period and calibrated as [Jz+0.9T, Jz+t+1.1T]. The monitoring and verification charts associated with different times in the main verification period are averaged to confirm the main verification chart associated with the main verification period. Then, the monitoring and verification charts associated with different times in the secondary verification period are averaged to confirm the secondary verification chart associated with the secondary verification period. The main verification chart and the secondary verification chart are then combined for verification to confirm the verification characteristics. Identify the area feature M1 associated with the main verification chart, then confirm the area feature M2 associated with the secondary verification chart. Use the formula: verification feature = M1 - M2 to lock the verification feature associated with the corresponding verification period, and then continuously perform comprehensive verification in sequence. Step 3: Perform multiple single-stage commissioning processes on the opening of the electrically controlled regulating valves associated with different sections of the wastewater treatment tank, and confirm the optimization direction associated with each single-stage commissioning process. Use this as the commissioning direction for the corresponding section. The specific method is as follows: For the aerobic front section of the wastewater treatment tank, the electric regulating valve is first increased by one adjustment degree, which is the preset adjustment degree. After the increase, a set of verification cycles t is run. During the verification cycle, the adjustment degree of the electric regulating valve remains unchanged after the increase, and the verification characteristics associated with the verification cycle are confirmed. The verification cycle for the inlet is [Jz, Jz+t], and the verification cycle for the outlet is [Jz+0.9T, Jz+t+1.1T], where Jz represents the current time. Identify the magnitude of the verification feature associated with the increase of the electric regulating valve relative to the value before the increase. If the verification feature decreases, the direction of increase in the aerobic front section is recorded as the optimization direction and the adjustment direction. If the verification feature increases, the direction of decrease in the aerobic front section is recorded as the optimization direction and the adjustment direction. For both the aerobic middle and aerobic end sections of the wastewater treatment tank, the same confirmation method as that used for the aerobic front section was adopted. The adjustment directions associated with the aerobic middle and aerobic end sections were confirmed sequentially, and the adjustment directions associated with different sections within the wastewater treatment tank were recorded sequentially. Step 4: Based on the commissioning direction associated with different sections within the wastewater treatment tank, perform synchronous commissioning on different sections, and confirm the verification characteristics associated with each different commissioning stage. From the associated verification characteristics, select the optimal commissioning stage and execute it. The specific method is as follows: Based on the commissioning direction associated with different sections, the electric regulating valves of different sections are adjusted according to the commissioning direction. Each different commissioning stage adjusts a regulating opening, and so on. Each different commissioning stage adjusts the associated regulating opening in sequence. Each different debugging phase lasts for a set of verification cycles, and the verification features associated with the verification cycle are confirmed. Then, the minimum verification feature is selected from the different debugging phases associated with it, and the debugging phase associated with the minimum verification feature is recorded as the optimal debugging phase. During the optimal commissioning phase, the operating opening of the electric regulating valves at different stages is recorded as the operating opening, and the associated electric regulating valves are controlled accordingly.
[0008] Preferably, the overall opening degree of the three sets of electric regulating valves should meet the following requirements: opening degree of the aerobic front section regulating valve > opening degree of the aerobic middle section regulating valve > opening degree of the aerobic rear section regulating valve.
[0009] This invention provides an aeration control method for wastewater treatment plants. Compared with existing technologies, it has the following advantages: This approach abandons the traditional single-point, decentralized parameter monitoring model, simultaneously quantifying multiple water quality parameters (DO, COD, ammonia nitrogen, etc.) at both the inlet and outlet into a unified regular polygon. Monitoring and verification charts are constructed using quantized edges, points, and the generated quantized polygons, achieving visualized integration and synchronous recording of multi-dimensional parameters. This method not only avoids data fragmentation caused by independent monitoring of different parameters but also intuitively reflects the coordinated change patterns of each parameter through features such as polygon area and point distribution. Furthermore, simultaneous monitoring at both the inlet and outlet comprehensively captures parameter fluctuations throughout the entire wastewater treatment process, effectively improving the completeness, correlation, and accuracy of the monitoring data. Based on the wastewater treatment tank volume and effluent flow rate, the discharge time is calculated, and a primary verification cycle for the inlet and a secondary verification cycle for the effluent are specifically set. By appropriately extending the secondary verification cycle (between 0.9T and 1.1T), the complete retention and purification cycle of wastewater from inlet to effluent is effectively covered, avoiding verification deviations caused by improper cycle settings. Simultaneously, by processing the mean values of monitoring and verification charts within the primary and secondary verification cycles and calculating the difference in area characteristics, the initial water quality characteristics at the inlet and the purified water quality characteristics at the effluent are accurately correlated and verified. This quantifies the matching degree between aeration effect and water purification, providing an objective and quantifiable basis for subsequent commissioning. Compared to traditional fuzzy effect evaluation methods, the verification results are more valuable and significantly reduce subjective judgment errors. Based on the different process requirements of the front, middle, and rear sections of the aeration tank (high-load degradation in the front section, stable nitrification in the middle section, and maintaining nitrification and preventing hypoxia in the rear section), a single commissioning process was adopted to confirm the optimal direction of the electric regulating valves in each section, avoiding the problem of insufficient local operating condition adaptation caused by traditional overall commissioning. Through the closed-loop logic of "single-section adjustment - periodic verification - effect comparison", the optimal adjustment direction of each section was accurately identified, which not only meets the different water quality loads and reaction requirements of each section, but also lays the foundation for subsequent synchronous commissioning. This effectively solves the industry pain points of uneven oxygen supply, energy waste, or poor treatment effect in different areas of the aeration tank. Attached Figure Description
[0010] Figure 1 This is a schematic diagram of the method flow of the present invention. Detailed Implementation
[0011] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0012] Please see Figure 1 This application provides an aeration control method for wastewater treatment plants, comprising the following steps: Step 1: Monitor various parameters at the inlet and outlet of the wastewater treatment tank in real time, quantify multiple monitoring parameters synchronously into the same polygon, identify the monitoring points associated with the corresponding monitoring parameters within the polygon, and then determine and record monitoring verification charts based on the monitoring progress. Specifically, in the actual treatment process, corresponding monitoring sensors are installed at the inlet and outlet of the wastewater treatment tank to monitor the corresponding water quality parameters, including DO parameters, COD concentration, ammonia nitrogen concentration, total nitrogen concentration, and total phosphorus concentration. Different monitoring parameters can be uniformly quantified to generate corresponding monitoring verification charts. The specific method for generating the monitoring and verification charts is as follows: Based on the different monitoring sensors installed at the inlet and outlet of the sewage treatment tank, the associated monitoring parameters are monitored in real time. Based on the total number G of the monitoring parameters, polygons with the same sides are generated (where the polygons are regular polygons; for example, if there are five monitoring sensors, then five sets of monitoring parameters are associated, and the five sets of monitoring parameters can be synchronously quantized to confirm the corresponding quantized edges, thereby generating quantized polygons with the corresponding total number of sides). The total number of corresponding sides corresponds to the value of G. The center point o of the polygon is determined, and then the different corner points associated with the polygon are determined. The quantized edges associated from the center point o to the corner points are confirmed, so that each set of quantized edges corresponds one-to-one with different monitoring parameters. After each set of quantization edges is associated with the monitoring parameters, a corresponding quantization standard is assigned to each set of quantization edges (that is, how many parameter values are associated with one unit length). Based on the assigned quantization standard, the quantization points associated with the corresponding monitoring parameters on the corresponding quantization edges are confirmed. The quantization points associated with multiple sets of quantization edges are connected sequentially to confirm the quantization polygon associated with multiple sets of quantization points. The quantization polygon confirmed at the corresponding time is used as the recorded monitoring verification chart. The various monitoring parameters of the inlet and outlet are monitored in real time in sequence, and the monitoring verification chart associated at the corresponding time is generated. Specifically, during the recording process of the monitoring and verification chart, at different times, there are multiple sets of associated monitoring parameters at the inlet and outlet. Different monitoring parameters have different quantification standards. The quantification points associated with the corresponding quantification parameters are identified on the corresponding quantification lines. Based on the positional characteristics between the quantification points, adjacent quantification points are connected to generate corresponding quantification lines, thereby generating quantification polygons associated with multiple quantification points, and then the associated monitoring and verification charts are generated simultaneously. Step 2: Based on the volume of the sewage treatment tank and the effluent flow rate of the outlet, determine the discharge time of the sewage treatment tank, then determine the verification period associated with the inlet and outlet based on the discharge time, and comprehensively verify the monitoring and verification charts associated with the verification period to confirm the verification characteristics. The specific method for confirming the verification period is as follows: The volume of the sewage treatment tank is marked as R, and the effluent flow rate at the outlet is marked as L. Using R ÷ L = T, the discharge duration T associated with the sewage treatment tank is confirmed. The current time is taken as the calibration time Jz, and the calibration period for the inlet is confirmed as the primary calibration period. The calibration period for the inlet is calibrated as [Jz, Jz+t], where t is a preset value. Its specific value is determined by the operator based on experience, generally 2 minutes. The calibration period for the outlet is then confirmed as the secondary calibration period, and the calibration period for the outlet is calibrated as [Jz+0.9T, Jz+t+1.1T]. The reason for selecting 0.9 and 1.1 here is to expand the corresponding calibration period so that the calibration period associated with the corresponding outlet can be appropriately extended to ensure the relative accuracy of the data. The monitoring and verification charts associated with different times in the main verification period are averaged to confirm the main verification chart associated with the main verification period. Then, the monitoring and verification charts associated with different times in the secondary verification period are averaged to confirm the secondary verification chart associated with the secondary verification period. The main verification chart and the secondary verification chart are then combined for verification to confirm the verification characteristics. Identify the area feature M1 associated with the main verification chart, and then confirm the area feature M2 associated with the secondary verification chart. Use the formula: Verification feature = M1 - M2 to lock the verification features associated with the corresponding verification period, and continuously perform comprehensive verification in sequence. From the inlet to the outlet, the associated monitoring parameter features are purified. That is, the sewage that has not undergone aeration treatment enters the sewage treatment tank through the inlet and is discharged through the outlet. The sewage discharged from the outlet has purified monitoring parameters. Based on the specific monitoring process, confirm the verification charts associated with the corresponding verification process, and perform comprehensive verification to identify the verification features associated with the corresponding control parameters, which facilitates subsequent comprehensive control debugging. Step 3: Perform multiple single-stage commissioning processes on the opening of the electric regulating valves associated with different sections of the wastewater treatment tank, and confirm the optimization direction associated with each single-stage commissioning process. Use this as the commissioning direction associated with the corresponding section. The different sections include the front section, the middle section, and the rear section. The front section is located at the inlet of the wastewater treatment tank, the middle section is located in the middle of the wastewater treatment tank, and the rear section is located at the end of the wastewater treatment tank. For the aerobic front section, the regulating valve opening is generally the largest because the influent load is high and the demand for degradation of organic matter and ammonia nitrogen is large. For the aerobic middle section, which is the core area of nitrification reaction, a stable oxygen supply is required. For the aerobic rear section, since the organic matter and ammonia nitrogen have been basically degraded, it is only necessary to maintain nitrification and prevent hypoxia. The specific method for confirming the optimization direction of a single debugging process is as follows: For the aerobic front section of the wastewater treatment tank, the electric regulating valve is first increased by one degree of adjustment. The adjustment degree is a preset degree, which is determined in advance by relevant personnel based on experience. After the increase, a set of verification cycles t is run. During the verification cycle, the adjustment degree of the electric regulating valve remains unchanged after the increase, and the verification characteristics associated with the verification cycle are confirmed. The verification cycle for the inlet is [Jz, Jz+t], and the verification cycle for the outlet is [Jz+0.9T, Jz+t+1.1T], where Jz represents the current time. Identify the magnitude of the verification feature associated with the increase of the electric regulating valve relative to the value before the increase. If the verification feature decreases, the direction of increase in the aerobic front section is recorded as the optimization direction and the adjustment direction. If the verification feature increases, the direction of decrease in the aerobic front section is recorded as the optimization direction and the adjustment direction. For both the aerobic middle and aerobic end sections of the wastewater treatment tank, the same confirmation method as that used for the aerobic front section was adopted. The adjustment directions associated with the aerobic middle and aerobic end sections were confirmed sequentially, and the adjustment directions associated with different sections within the wastewater treatment tank were recorded sequentially. Specifically, within the wastewater treatment tank, there are different sections, each with different adjustment and treatment characteristics. During the commissioning process, based on the specific progress of the commissioning, the comprehensive verification status of the corresponding verification chart is identified, thereby locking the corresponding verification characteristics and outputting them in a timely manner, locking the corresponding adjustment direction, facilitating subsequent control and adjustment, and determining the optimal control parameters.
[0013] Step 4: Based on the commissioning direction associated with different sections within the wastewater treatment tank, perform synchronous commissioning on different sections, confirm the verification characteristics associated with each different commissioning stage, select the optimal commissioning stage from the associated verification characteristics, and execute it. The specific method for selecting the optimal debugging phase is as follows: Based on the commissioning direction associated with different sections, the electric regulating valves of different sections are adjusted according to the commissioning direction. Each different commissioning stage adjusts one adjustment opening. For example, in the initial commissioning stage, only one adjustment opening is adjusted. When executing the second commissioning stage, another adjustment opening is made based on the previous stage, and so on. Each different commissioning stage adjusts the associated adjustment opening sequentially. In different sections, the opening of the electric regulating valves associated with the aerobic front section, aerobic middle section, and aerobic rear section gradually decreases. The overall opening of the three sets of electric regulating valves must meet the following requirement: aerobic front section regulating valve opening > aerobic middle section regulating valve opening > aerobic rear section regulating valve opening. Each different debugging phase lasts for a set of verification cycles, and the verification features associated with the verification cycle are confirmed. Then, the minimum verification feature is selected from the different debugging phases associated with it, and the debugging phase associated with the minimum verification feature is recorded as the optimal debugging phase. During the optimal commissioning phase, the opening degree of the electric regulating valves at different stages is recorded as the execution opening degree, and the associated electric regulating valves are controlled to ensure that the sewage treatment tank is in the optimal aeration state. Specifically, in the actual treatment process, the sewage in the sewage treatment tank needs to undergo a corresponding aeration treatment process. Based on the opening degree of the electric regulating valve associated with the aeration process, the opening degree characteristics associated with different sections are effectively adjusted so that the corresponding electric regulating valve is in the optimal operating state, achieving the best regulation and control treatment effect.
[0014] Some of the data in the above formulas are numerical calculations with dimensions removed, and the contents not described in detail in this specification are all prior art known to those skilled in the art.
[0015] The above embodiments are only used to illustrate the technical methods of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical methods of the present invention without departing from the spirit and scope of the technical methods of the present invention.
Claims
1. An aeration control method for wastewater treatment plants, characterized in that, Includes the following steps: Step 1: Monitor the various monitoring parameters of the inlet and outlet of the sewage treatment tank in real time, quantify multiple monitoring parameters synchronously into the same polygon, identify the monitoring points associated with the corresponding monitoring parameters within the polygon, and then determine and record the monitoring verification chart based on the monitoring progress. Step 2: Based on the volume of the sewage treatment tank and the effluent flow rate of the outlet, determine the discharge time of the sewage treatment tank, then determine the verification period associated with the inlet and outlet based on the discharge time, and comprehensively verify the monitoring and verification charts associated with the verification period to confirm the verification characteristics. Step 3: Perform multiple single-stage debugging processes on the opening of the electric regulating valves associated with different sections of the sewage treatment tank, and confirm the optimization direction associated with each single-stage debugging process, and use it as the debugging direction associated with the corresponding section. Step 4: Based on the commissioning direction associated with different sections within the wastewater treatment tank, perform synchronous commissioning on different sections, confirm the verification characteristics associated with each different commissioning stage, select the optimal commissioning stage from the associated verification characteristics, and execute it.
2. The aeration control method for a wastewater treatment plant according to claim 1, characterized in that, In step one, the specific method for generating the monitoring and verification chart is as follows: Based on the different monitoring sensors installed at the inlet and outlet of the sewage treatment tank, the different monitoring parameters associated with them are monitored in real time. Based on the total number G of the monitoring parameters, polygons with the same sides are generated, where the total number of corresponding sides corresponds to the value of G. The center point o of the polygon is determined, and then the different corner points associated with the polygon are determined. The quantized edge lines associated with the center point o to the corner points are confirmed, so that each set of quantized edge lines corresponds to different monitoring parameters one by one. After each set of quantization boundary lines is correlated with the monitoring parameters, a corresponding quantization standard is assigned to each set of quantization boundary lines. Based on the assigned quantization standard, the quantization points associated with the corresponding monitoring parameters on the corresponding quantization boundary lines are confirmed. The quantization points associated with multiple sets of quantization boundary lines are then connected sequentially to confirm the quantization polygon associated with multiple sets of quantization points. The quantization polygon confirmed at the corresponding time is used as the recorded monitoring verification chart. The various monitoring parameters of the inlet and outlet are monitored in real time in sequence, and the monitoring verification chart associated at the corresponding time is generated.
3. The aeration control method for a wastewater treatment plant according to claim 1, characterized in that, In step two, the specific method for confirming the verification period is as follows: The volume of the sewage treatment tank is marked as R, and the effluent flow rate of the outlet is marked as L. Using R÷L=T, the discharge duration T associated with the sewage treatment tank is confirmed. The current time is taken as the calibration time Jz. The calibration period for the inlet is confirmed as the primary calibration period and calibrated as [Jz, Jz+t], where t is a preset value. The calibration period for the outlet is then confirmed as the secondary calibration period and calibrated as [Jz+0.9T, Jz+t+1.1T].
4. The aeration control method for a wastewater treatment plant according to claim 3, characterized in that, In step two, the specific method for confirming the verification features is as follows: The monitoring and verification charts associated with different times in the main verification period are averaged to confirm the main verification chart associated with the main verification period. Then, the monitoring and verification charts associated with different times in the secondary verification period are averaged to confirm the secondary verification chart associated with the secondary verification period. The main verification chart and the secondary verification chart are then combined for verification to confirm the verification characteristics. Identify the area feature M1 associated with the main verification chart, then confirm the area feature M2 associated with the secondary verification chart. Use the formula: verification feature = M1 - M2 to lock the verification feature associated with the corresponding verification period, and then continuously perform comprehensive verification in sequence.
5. The aeration control method for a wastewater treatment plant according to claim 1, characterized in that, In step three, the specific method for confirming the optimization direction of the single debugging process is as follows: For the aerobic front section of the wastewater treatment tank, the electric regulating valve is first increased by one adjustment degree, which is the preset adjustment degree. After the increase, a set of verification cycles t is run. During the verification cycle, the adjustment degree of the electric regulating valve remains unchanged after the increase, and the verification characteristics associated with the verification cycle are confirmed. The verification cycle for the inlet is [Jz, Jz+t], and the verification cycle for the outlet is [Jz+0.9T, Jz+t+1.1T], where Jz represents the current time. Identify the magnitude of the verification feature associated with the increase of the electric regulating valve relative to the value before the increase. If the verification feature decreases, the direction of increase in the aerobic front section is recorded as the optimization direction and the adjustment direction. If the verification feature increases, the direction of decrease in the aerobic front section is recorded as the optimization direction and the adjustment direction. For both the aerobic middle and aerobic end sections of the wastewater treatment tank, the same confirmation method as that used for the aerobic front section was adopted. The adjustment directions associated with the aerobic middle and aerobic end sections were confirmed sequentially, and the adjustment directions associated with different sections within the wastewater treatment tank were recorded sequentially.
6. The aeration control method for a wastewater treatment plant according to claim 1, characterized in that, In step four, the specific method for selecting the optimal debugging stage is as follows: Based on the commissioning direction associated with different sections, the electric regulating valves of different sections are adjusted according to the commissioning direction. Each different commissioning stage adjusts a regulating opening, and so on. Each different commissioning stage adjusts the associated regulating opening in sequence. Each different debugging phase lasts for a set of verification cycles, and the verification features associated with the verification cycle are confirmed. Then, the minimum verification feature is selected from the different debugging phases associated with it, and the debugging phase associated with the minimum verification feature is recorded as the optimal debugging phase. During the optimal commissioning phase, the operating opening of the electric regulating valves at different stages is recorded as the operating opening, and the associated electric regulating valves are controlled accordingly.
7. The aeration control method for a wastewater treatment plant according to claim 6, characterized in that, The overall opening degree of the three sets of electric regulating valves must meet the following requirements: opening degree of the aerobic front-stage regulating valve > opening degree of the aerobic middle-stage regulating valve > opening degree of the aerobic rear-stage regulating valve.