Aeration volume intelligent control method, device, controller and storage medium

Abstract

The present application relates to the field of intelligent control, and specifically to an aeration volume intelligent control method, device, controller and storage medium, the method is used for a controller, the controller is connected to the field control equipment, the controller obtains the aeration reference parameters of the target site; the target dissolved oxygen concentration, carbonization oxygen demand, nitrification oxygen demand, and denitrification oxygen production of the aeration treatment are obtained through the aeration treatment model and the aeration reference parameters; the oxygen demand of the aeration treatment is obtained according to the carbonization oxygen demand, nitrification oxygen demand and denitrification oxygen production; the target aeration volume is obtained according to the oxygen demand and the oxygen utilization rate of the aeration equipment; the target aeration volume and the target dissolved oxygen concentration are transmitted to the field control equipment, and the field control equipment adjusts the aeration volume accordingly. The method can automatically realize the precise control of aeration, save human resources, and can also solve the overshoot phenomenon caused by a single parameter as the control target.

Description

Technical Field

[0001] The present application relates to the field of intelligent control, and in particular to an aeration volume intelligent control method, device, controller and storage medium. Background Art

[0002] During the aeration treatment process, certain methods and equipment are needed to force air into the aeration tank so that the liquid in the aeration tank comes into contact with the air and becomes oxygenated, and the liquid is stirred to accelerate the transfer of oxygen in the air into the liquid, prevent suspended objects in the tank from sinking, strengthen the contact between organic matter in the tank and microorganisms and dissolved oxygen, and oxidize and decompose the organic matter in the liquid. This process of forcing oxygen into the liquid is called aeration.

[0003] During the aeration process, one way is to manually set the aeration volume, and the other way is to measure the dissolved oxygen concentration in the pool and control the aeration volume through feedback from the measured dissolved oxygen concentration.

[0004] However, the above-mentioned manual control method has a low adjustment frequency, wastes human resources, and is prone to energy waste or process failure due to manual misjudgment. The method of using dissolved oxygen concentration to feedback the aeration volume will cause the dissolved oxygen concentration to fluctuate frequently when the water load is large, resulting in high and low overshoot of the air volume. Summary of the invention

[0005] The embodiments of the present application provide an aeration volume intelligent control method, device, controller and storage medium, aiming to automatically realize precise control of aeration through the controller, so that the process meets the standards, reduce energy waste, save human resources, and solve the overshoot phenomenon caused by a single parameter as the control target.

[0006] On the one hand, an embodiment of the present application provides an aeration volume intelligent control method, which is applied to a controller, wherein the controller is communicatively connected with a field control device of a target site with aeration demand, and the field control device of the target site is used to control the aeration volume of the aeration device of the target site, and the aeration volume intelligent control method includes:

[0007] Obtaining aeration reference parameters of the target site, wherein the aeration reference parameters include influent flow, chemical oxygen demand, and ammonia nitrogen content;

[0008] The target dissolved oxygen concentration, carbonization oxygen demand, nitrification oxygen demand, and denitrification oxygen production of aeration treatment are obtained through an aeration treatment model and the aeration reference parameters, wherein the aeration treatment model is established based on an activated sludge model;

[0009] Obtaining the oxygen demand for aeration treatment according to the carbonization oxygen demand, the nitrification oxygen demand and the denitrification oxygen production;

[0010] Obtaining a target aeration volume according to the oxygen demand of the aeration treatment and the oxygen utilization rate of the aeration equipment;

[0011] The target aeration amount and the target dissolved oxygen concentration are transmitted to an on-site control device of a target site, so that the on-site control device of the target site can adjust the aeration amount of the aeration device according to the target aeration amount and the target dissolved oxygen concentration.

[0012] On the other hand, the present application provides an aeration volume intelligent control device, which is applied to a controller, wherein the controller is communicatively connected with a field control device of a target site with aeration demand, and the field control device of the target site is used to control the aeration volume of the aeration device of the target site, and the aeration volume intelligent control device comprises:

[0013] An acquisition module is used to acquire aeration reference parameters of a target site, wherein the aeration reference parameters include: influent flow rate, chemical oxygen demand and ammonia nitrogen content;

[0014] A target value acquisition module is used to obtain the target dissolved oxygen concentration, carbonization oxygen demand, nitrification oxygen demand, and denitrification oxygen production of aeration treatment through an aeration treatment model and the aeration reference parameters, wherein the aeration treatment model is established based on an activated sludge model; the oxygen demand for aeration treatment of a target site is obtained according to the carbonization oxygen demand, nitrification oxygen demand, and denitrification oxygen production; and the target aeration volume is obtained according to the oxygen demand for aeration treatment and the oxygen utilization rate of the aeration equipment;

[0015] The target value transmission module is used to transmit the target aeration volume and the target dissolved oxygen concentration to the on-site control equipment of the target site, so that the on-site control equipment of the target site can adjust the aeration volume of the aeration equipment according to the target aeration volume and the target dissolved oxygen concentration.

[0016] On the other hand, the present application also provides a controller, the controller comprising:

[0017] one or more processors;

[0018] Memory; and

[0019] One or more applications, wherein the one or more applications are stored in the memory and configured to be executed by the processor to implement the aeration volume intelligent control method according to any one of the first aspects.

[0020] In a fourth aspect, the present application further provides a computer-readable storage medium having a computer program stored thereon, wherein the computer program is loaded by a processor to execute the steps in the aeration volume intelligent control method described in any one of the first aspects.

[0021] The embodiment of the present application automatically performs aeration control through a controller, which can save human resources for aeration control, and creates an aeration treatment model based on an activated sludge model. Since the activated sludge model can simulate the biochemical reaction process of the aeration treatment plant based on a variety of aeration reference parameters, compared with controlling the aeration amount through a single parameter of dissolved oxygen, the embodiment of the present application can accurately obtain the target dissolved oxygen concentration and the target aeration amount, thereby ensuring precise aeration control, which can not only ensure that the process meets the standards and save energy, but also avoid overshoot caused by single parameter feedback. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0023] Figure 1 It is a scene schematic diagram of the aeration volume intelligent control system provided in the embodiment of the present application;

[0024] Figure 2 It is a schematic flow chart of an embodiment of the aeration volume intelligent control method provided in the embodiments of the present application;

[0025] Figure 3 This is a schematic diagram of an embodiment of the process of obtaining the target aeration volume in step 204 of the embodiment of the present application;

[0026] Figure 4 It is a schematic diagram of the structure of an embodiment of the aeration volume intelligent control device provided in the embodiments of the present application;

[0027] Figure 5 It is a schematic diagram of the structure of an embodiment of the controller provided in the embodiments of the present application. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of this application.

[0029] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the said features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0030] In this application, the word "exemplary" is used to mean "used as an example, illustration, or description." Any embodiment described in this application as "exemplary" is not necessarily to be construed as being preferred or advantageous over other embodiments. The following description is given to enable any technician in the field to implement and use the present application. In the following description, details are listed for the purpose of explanation. It should be understood that a person of ordinary skill in the art can recognize that the present application can be implemented without using these specific details. In other instances, well-known structures and processes will not be elaborated in detail to avoid obscuring the description of the present application with unnecessary details. Therefore, the present application is not intended to be limited to the embodiments shown, but is consistent with the widest scope consistent with the principles and features disclosed in the present application.

[0031] It should be noted that since the method of the embodiment of the present application is executed in a computer device, such as a controller, the processing objects of each electronic device exist in the form of data or information. For example, time is actually time information. It can be understood that if size, quantity, position, etc. are mentioned in subsequent embodiments, they are all corresponding data for processing by the electronic device. The details will not be repeated here.

[0032] The embodiments of the present application provide an aeration volume intelligent control method, device, controller and storage medium, which are described in detail below.

[0033] The aeration volume intelligent control method of the embodiment of the present application can be used in a controller.

[0034] See also Figure 1 , Figure 1The following is a schematic diagram of a scenario of an aeration volume intelligent control system provided in an embodiment of the present application. The scenario can be applied to a target site, which is a site with aeration requirements, such as a sewage treatment plant, but is not limited thereto. The target site has an aeration tank, which can be divided into multiple dissolved oxygen control zones. The aeration volume intelligent control system can include a controller 101, in which an aeration volume intelligent control device is integrated.

[0035] In the embodiment of the present application, the controller 101 may be an independent server, or a server network or server cluster composed of servers. For example, the controller 101 described in the embodiment of the present application includes but is not limited to a computer, a network host, a single network server, a plurality of network server sets or a cloud server composed of a plurality of servers. The cloud server is composed of a large number of computers or network servers based on cloud computing.

[0036] The controller 101 is respectively connected to the on-site control equipment at the target site for communication, and the on-site control equipment is used to control the aeration volume of the aeration equipment at the target site.

[0037] For example, the on-site control equipment may include: an aeration fan control equipment 102 and an aeration branch pipe control equipment 103 .

[0038] The aeration fan control device 102 is used to control the total aeration volume of the aeration fan 104 corresponding to the aeration device, and the aeration branch pipe control device is used to control the aeration volume of each aeration branch pipe 105 corresponding to the aeration device. Each aeration branch pipe transmits oxygen to each dissolved oxygen control zone in the aeration tank 106. The aeration fan control device and the aeration branch pipe control device can be a programmable logic controller (PLC) or other control devices, which is not limited in the embodiments of the present application.

[0039] The embodiment of the present application transmits the target aeration volume and the target dissolved oxygen concentration to the on-site control equipment so that the on-site control equipment can determine the aeration volume. Compared with setting the control equipment for controlling the aeration equipment at a remote end, the embodiment of the present application can facilitate the on-site control equipment to obtain measurement data from other parameter measurement instruments on site, thereby improving the real-time performance of measurement data acquisition. On the other hand, it facilitates the real-time management and control of the target site of the on-site control equipment, thereby reducing the delay caused by data transmission and processing caused by the interaction between the on-site instrument and the remote end.

[0040] Those skilled in the art will understand that Figure 1 The application environment shown in the figure is only one application scenario of the present application solution and does not constitute a limitation on the application scenario of the present application solution. Other application environments may also include Figure 1 More or less computer equipment as shown in Figure 1 Only one computer device is shown. It can be understood that the aeration volume intelligent control system may also include one or more other services, which are not specifically limited here.

[0041] In addition, the aeration volume intelligent control system applied to the target site may also include a memory for storing data, such as storing historical water inlet and outlet data, empirical data for aeration control, and the like.

[0042] In some embodiments, the aeration volume intelligent control system may also include parameter measuring instruments at the target site, such as air flow meter, online dissolved oxygen meter, oxidation-reduction potential meter (ORP), mixed liquid suspended solids (MLSS) and other online instruments. The parameter measuring instruments can be used as online monitoring means to monitor the entire aeration process and the state of the aerobic microbial degradation of organic matter in real time, so that the operation management personnel can timely grasp the operation status of the activated sludge system and the degradation status of pollutants.

[0043] In some embodiments, the aeration volume intelligent control system may further include: a central control room host computer configuration, which may be connected to the controller 101 for communication, and provide a human-computer interaction interface, which is used by operating personnel to operate the control system to start and stop, set parameters, etc., and by debugging personnel to modify relevant control strategies and control parameters, so that operating management personnel can timely grasp the status of relevant instruments and equipment in the entire aeration process, and can remotely adjust them to achieve remote control of the target site.

[0044] It should be noted that Figure 1 The scenario diagram of the aeration volume intelligent control system shown is only an example. The aeration volume intelligent control system and scenario described in the embodiment of the present application are intended to more clearly illustrate the technical solution of the embodiment of the present application, and do not constitute a limitation on the technical solution provided in the embodiment of the present application. Ordinary technicians in this field can know that with the evolution of the aeration volume intelligent control system and the emergence of new business scenarios, the technical solution provided in the embodiment of the present application is also applicable to similar technical problems.

[0045] First, an aeration volume intelligent control method is provided in an embodiment of the present application. The execution subject of the aeration volume intelligent control method is applied to an aeration volume intelligent control device. The aeration volume intelligent control device is applied to a controller. The controller is connected to a field control device of a target site in communication. The field control device of the target site is used to control the aeration volume of the aeration device of the target site. The aeration volume intelligent control method includes:

[0046] Obtaining aeration reference parameters of the target site, wherein the aeration reference parameters include influent flow, chemical oxygen demand, and ammonia nitrogen content;

[0047] The target dissolved oxygen concentration, carbonization oxygen demand, nitrification oxygen demand, and denitrification oxygen production of aeration treatment are obtained through an aeration treatment model and the aeration reference parameters, wherein the aeration treatment model is established based on an activated sludge model;

[0048] Obtaining the oxygen demand for aeration treatment of the target site according to the carbonization oxygen demand, nitrification oxygen demand and denitrification oxygen production;

[0049] Obtaining a target aeration volume of a target site according to the oxygen demand of the aeration treatment and the oxygen utilization rate of the aeration equipment;

[0050] The target aeration amount and the target dissolved oxygen concentration are transmitted to an on-site control device of a target site, so that the on-site control device of the target site can adjust the aeration amount of the aeration device according to the target aeration amount and the target dissolved oxygen concentration.

[0051] The aeration fan control device and the aeration branch pipe control device of the embodiment of the present application can realize real-time and accurate control of the aeration process of the target site, thereby avoiding energy consumption due to overexposure, ensuring that the process meets the standards, saving human resources for aeration control, and solving the overshoot phenomenon caused by single parameter feedback control.

[0052] The implementation details of the aeration volume intelligent control method according to the embodiment of the present application are specifically described below. The following content is only provided for the convenience of understanding the implementation details and is not necessary for the implementation of the present solution.

[0053] like Figure 2 As shown, it is a schematic diagram of an embodiment of the intelligent control method of aeration volume in the embodiment of the present application, and the intelligent control method of aeration volume includes:

[0054] Step 201, obtaining aeration reference parameters of a target site.

[0055] The target site can be determined according to actual applications, and any place with aeration requirements can be used as a target site, such as a sewage treatment plant.

[0056] Aeration reference parameters may include parameters that characterize the current influent water quality of the aeration tank in the target site, such as the concentration of each component of the influent, such as the influent flow rate, chemical oxygen demand (COD), ammonia nitrogen content, dissolved oxygen concentration (DO) of the influent, etc.

[0057] Aeration reference parameters can be obtained from on-site equipment at the target site and recommended values ​​from activated sludge models (ASMs).

[0058] For aeration reference parameters that can be directly measured, they can be obtained from the field equipment at the target site. The field equipment includes: field control equipment, such as PLC, and parameter measurement instruments of the sewage aeration treatment plant.

[0059] For the concentrations of components in the aeration reference parameters that cannot be directly measured, the recommended values ​​in activated sludge models (ASMs) can be used.

[0060] ASMs provide recommended values ​​for the proportion of each component. These values ​​can be used when there are no water quality components. However, in actual application, the recommended values ​​need to be revised based on the actual water quality conditions.

[0061] The ASMs model divides the influent COD components into: biodegradable dissolved organic matter (S S , inert dissolved organic matter S I , Slowly biodegradable organic matterX S , inert particulate organic matterX I , heterotrophic bacteria X H .

[0062] Among them, the ASM2d model in the ASMs model considers biodegradable dissolved organic matter S S Further divided into fermentation products S A and fermentable biodegradable organic matter S F ; Divide the nitrogen components of the influent into: ammonia nitrogen S NH4 , nitrate nitrogen and nitrite nitrogen S NO3 、Nitrogen S N2 ; Divide the phosphorus components of the influent into: orthophosphate S PO4 、PolyphosphateX PP 、Metal HydroxideX MeOH 、Metal PhosphateX MeP .

[0063] For example, in the present embodiment, the chemical oxygen demand COD, biochemical oxygen demand BOD, ammonia nitrogen S can be determined according to the actual detection conditions of the sewage aeration treatment plant. NH4 , nitrate nitrogen, nitrite nitrogen, total phosphorus TP, biodegradable dissolved organic matter S S , Inert dissolved organic matter S I , Slowly biodegradable organic matterX S 、Inert particulate organic matterX I , orthophosphate SPO4 , alkalinity as the main determination components, heterotrophic bacteria X H , fermentable and biodegradable organic matter S F The ratio of water and fermentation products is determined using the recommended ratio of the International Water Association (IWA).

[0064] Compared with aeration control by a single parameter, that is, measuring the dissolved oxygen concentration in the aeration tank and then feeding back the aeration amount based on the linear relationship between the aeration tank and the dissolved oxygen concentration, the embodiment of the present application collects multiple aeration reference parameters and performs aeration control based on each aeration reference parameter. This can avoid the frequent fluctuations or high and low overshoots of dissolved oxygen caused by large changes in the water inlet load during the above-mentioned single parameter control process.

[0065] After obtaining the aeration reference parameters, step 202 may be performed.

[0066] Step 202, obtaining the target dissolved oxygen concentration, carbonization oxygen demand, nitrification oxygen demand, and denitrification oxygen production of the aeration treatment through the aeration treatment model and aeration reference parameters.

[0067] The aeration treatment model is specifically an aeration treatment model of the target site, which can be determined according to the parameters of the target site and the parameters of the activated sludge model. The aeration treatment model may include: input model, biodynamic model, aeration model, output model, etc. The model parameters include the physical size data of the target site, the recommended values ​​of the aeration reference parameters, the load parameters and operation parameters of the target site, and the kinetic parameters and stoichiometric parameters of the activated sludge model.

[0068] For example, if the target site is a sewage treatment plant, the model parameters of the sewage treatment plant model include, but are not limited to: physical dimensions of the sewage treatment plant, recommended values ​​of aeration reference parameters, load parameters, operating parameters of the sewage treatment plant, kinetic parameters and stoichiometric parameters of the activated sludge model in the sewage treatment plant model.

[0069] The biokinetic model can be specifically an activated sludge model, which can also be called an activated sludge kinetic model. It can combine the reactor theory and microbiology theory in the chemical industry to quantitatively describe the mathematical relationship between various parameters such as substrate degradation and microbial growth. That is, it can quantitatively or semi-quantitatively reveal the relationship between the degradation of organic matter, sludge growth, aerobic effects and various design parameters, operating parameters and environmental factors in the activated sludge system through mathematical formulas.

[0070] In some embodiments, during the aeration process, the model parameters in the aeration treatment model may be adjusted according to the historical parameters of the target site. For example: obtaining the historical parameters of the target site within a preset time period; wherein the historical parameters include: historical aeration reference parameters of the target site, and historical aeration result parameters; inputting the historical aeration reference parameters into the current aeration treatment model to obtain predicted aeration result parameters; adjusting the model parameters in the current aeration treatment model according to the predicted aeration result parameters and the historical aeration result parameters.

[0071] The aeration result parameters may be parameters such as the concentration of each component of the effluent in the target site, which characterize the current effluent quality of the aeration tank in the target site.

[0072] This embodiment can adjust the model parameters through historical data, continuously optimize the aeration treatment model, make the aeration treatment model more accurately fit the target site, and improve the simulation effect of the aeration treatment model.

[0073] The embodiments of the present application take into account that dissolved oxygen is an important factor affecting processes such as aerobic biological treatment. Dissolved oxygen is affected by many factors and is a nonlinear and time-varying variable. The traditional PID control method cannot accurately and timely respond to the influence of various disturbances. Therefore, the control of dissolved oxygen is established on the basis of the activated sludge model to improve the reliability of dissolved oxygen control.

[0074] In some embodiments, the activated sludge model of the embodiments of the present application may be a static model in the activated sludge model.

[0075] The calculation results of the static model can basically meet the requirements of activated sludge process design, and have the characteristics of easy measurement of model variables, determination of kinetic parameters and convenient solution of equations.

[0076] However, this static model based on equilibrium state loses a lot of transient process information between different equilibrium growth states and ignores some important dynamic phenomena. The static model only considers the removal of carbon-containing organic matter in sewage, but does not consider the removal process of nitrogen and phosphorus. When the static model is applied to the activated sludge process system with typical time-varying characteristics, the following problems will exist:

[0077] First, it cannot explain and describe the phenomenon of "rapid removal" of organic matter, which is common in sewage biological treatment, and the change of organic matter concentration in effluent with influent concentration.

[0078] Second, it cannot well predict the hysteresis effect of changes in microbial growth rate when the organic matter concentration increases in actual observations, and the static model cannot simulate the dynamic changes in oxygen utilization.

[0079] Based on this, in other embodiments, the activated sludge model of the embodiment of the present application can be a dynamic model in the activated sludge kinetic model. The dynamic model can enable the aeration treatment model to simulate the dynamic changes of oxygen utilization, taking into account both the removal of carbon-containing organic matter in sewage and the removal process of nitrogen and phosphorus, thereby simulating the dynamic changes of oxygen utilization.

[0080] The principle of the activated sludge model is based on the activated sludge process, which artificially maintains an environment for microbial growth and carries out organic matter removal, NH4-N nitrification, and aerobic phosphorus absorption in the aeration tank.

[0081] The aeration process of the activated sludge method provides suitable dissolved oxygen for the removal of organic carbon, nitrification, phosphorus absorption, etc., so as to promote the normal progress of the three biochemical reactions.

[0082] During the aerobic biological treatment process of aeration, the change of dissolved oxygen is a dynamic equilibrium process, which includes the supply and consumption of oxygen.

[0083] The oxygen supply process mainly involves the diffusion and dissolution of oxygen supplied by the aeration equipment, that is, in the aeration equipment, after the air is released from the aeration head at the bottom of the aeration tank, the oxygen in the air is transferred from the gas phase to the liquid phase.

[0084] The oxygen consumption process is the comprehensive result of various reactions in the aerobic treatment process, including nitrification, carbon oxidation, and aerobic phosphorus absorption by microorganisms.

[0085] Since the influent water quality and water volume of the target site change in real time, the oxygen consumption of microorganisms to degrade pollutants also changes accordingly. Therefore, only by balancing the oxygen supply and consumption within this period and achieving stable control of dissolved oxygen can we minimize the resource consumption caused by aeration while promoting the stable progress of biochemical reactions and improving the effluent water quality.

[0086] That is, the goal of aeration control in the embodiment of the present application is to form stable dissolved oxygen conditions, to establish a dynamic balance and a reliable living environment for microbial growth and pollutant degradation. The essence of this dynamic balance process is to make the oxygen transfer rate approximately equal to the oxygen consumption rate.

[0087] Oxygen transfer rate RO and dissolved oxygen concentration, temperature and oxygen transfer coefficient K La Related, K La It is related to aeration volume, sewage characteristics, etc., among which K La Mainly affected by aeration volume Q g impact.

[0088] The oxygen consumption rate rO is closely related to dissolved oxygen concentration, pollutant load, mixed liquid volatile suspended solids (MLVSS) concentration and biomass. Since the change rate of MLVSS is slow, its main influencing factors are dissolved oxygen concentration and pollutant load.

[0089] That is, the oxygen transfer rate is approximately equal to the oxygen consumption rate and can be expressed as: RO = rO;

[0090] Where RO = f(DO, T, Q g ), rO=g(DO,Q in , C, N, P, VSS), where DO is the current dissolved oxygen concentration, T is the current temperature of the aeration tank, Q g is the aeration amount, C is the carbon content, N is the nitrogen content, P is the phosphorus content, Q in is the influent flow rate, and VSS is the volatile suspended solids.

[0091] The embodiment of the present application maintains a dynamic balance between oxygen consumption and supply in the aeration tank through a target aeration volume, so that the dissolved oxygen concentration in the aeration tank is maintained at a preset concentration.

[0092] The control of dissolved oxygen is not only reflected in the stability of the real-time dissolved oxygen value, but also in the selection of an appropriate set value for dissolved oxygen concentration, i.e., the target dissolved oxygen concentration.

[0093] In some embodiments, the method for setting the target dissolved oxygen concentration is as follows: the dissolved oxygen concentration required to be achieved by the currently set aeration tank and the aeration reference parameters are input into the aeration treatment model to obtain the predicted aeration result parameters within a future preset time period; if the predicted aeration result parameters within the future preset time period reach the target aeration result parameter standard, the dissolved oxygen concentration required to be achieved by the currently set aeration tank is used as the target dissolved oxygen concentration; if the predicted aeration result parameters within the future preset time period do not reach the target aeration result parameter standard, the dissolved oxygen concentration is adjusted, and the adjusted dissolved oxygen concentration is re-input into the aeration treatment model until the predicted aeration result parameters within the future preset time period reach the target aeration result parameter standard.

[0094] The dissolved oxygen concentration required to be achieved by the currently set aeration tank may be an initial dissolved oxygen concentration set according to historical experience. The aeration result parameter standard may be a prescribed effluent water quality standard, which is not limited in the present embodiment of the application.

[0095] The preset time period in the future can be the next hour or the next N days, and can be set according to needs.

[0096] The adjustment strategy for dissolved oxygen can be set according to actual aeration reference parameters, predicted aeration result parameters within a preset future time period, and target aeration result parameter standards, or can be set according to the dissolved oxygen concentration required to be achieved in the currently set aeration tank by increasing or decreasing a certain proportion. The embodiments of the present application are not limited to this.

[0097] In other embodiments, the aeration tank is divided into a plurality of dissolved oxygen control zones, and different target dissolved oxygen concentrations are obtained for different dissolved oxygen control zones in the aeration tank. That is, first, the dissolved oxygen concentrations required to be achieved in each currently set dissolved oxygen control zone and the aeration reference parameters are respectively input into the aeration treatment model to obtain the predicted aeration result parameters within a preset time period in the future; the dissolved oxygen concentrations required to be achieved in each dissolved oxygen control zone are used as the target dissolved oxygen concentrations corresponding to each dissolved oxygen control zone; the dissolved oxygen concentrations required to be achieved in each dissolved oxygen control zone are adjusted, and the adjusted dissolved oxygen concentrations required to be achieved in each dissolved oxygen control zone are re-input into the aeration treatment model.

[0098] The embodiments of the present application take into account that due to differences in process zones, there are some influences on each other. For example, the terminal dissolved oxygen will affect the denitrification effect of the denitrification zone, and the dissolved oxygen of the return sludge in the secondary sedimentation tank will affect the phosphorus release effect in the anaerobic zone. Therefore, the embodiments of the present application treat different positions in the aerobic zone differently, that is, the aeration tank is divided into various dissolved oxygen control zones, and the target dissolved oxygen concentration is more reasonably obtained for each dissolved oxygen control zone, so as to promote the denitrification and phosphorus removal effects in the entire aeration process.

[0099] The above is the process of obtaining the target dissolved oxygen concentration. The following is a brief description of the process of obtaining the carbonization oxygen demand, nitrification oxygen demand, and denitrification oxygen production in combination with the mathematical formula in the aeration treatment model:

[0100] Among them, the mathematical formula defined in the aeration treatment model of the target site is as follows:

[0101] Carbonization oxygen demand = BOD removal oxygen demand - BOD oxygen equivalent in excess sludge

[0102] =0.001aQ(S o -S e )-cΔXV.

[0103] Nitrification oxygen demand = ammonia nitrogen nitrification oxygen demand - oxygen equivalent of ammonia nitrogen in excess sludge

[0104] =b[0.001Q(N k -N ke )-0.12ΔXV].

[0105] Denitrification oxygen production = 0.62b[0.001Q(N t -N ke -Noe )-0.12ΔXV].

[0106] Wherein, O2—oxygen demand for aeration treatment (kgO2 / d);

[0107] Q—water flow rate of biological reactor (m 3 / d);

[0108] S o —Biochemical oxygen demand concentration BOD5 (mg / L) of the influent of the biological reactor for five days;

[0109] S e —Biochemical oxygen demand concentration BOD5 (mg / L) of the effluent from the biological reactor for five days;

[0110] ΔXV—microorganism quantity discharged from the bioreactor system (kg / d);

[0111] N k —Total Kjeldahl nitrogen concentration of the bioreactor influent (mg / L);

[0112] N ke —Total Kjeldahl nitrogen concentration of the effluent from the biological reactor (mg / L);

[0113] N t —Total nitrogen concentration of bioreactor influent (mg / L);

[0114] N oe — Nitrate nitrogen concentration in the effluent of the biological reactor (mg / L);

[0115] 0.12ΔXV—Nitrogen content in microorganisms discharged from the bioreactor system (kg / d);

[0116] a—oxygen equivalent of carbon, when carbon-containing substances are measured as BOD5, take 1.47;

[0117] b—constant, the amount of oxygen required to oxidize each kilogram of ammonia nitrogen (kgO2 / kgN), take 4.57;

[0118] c—constant, oxygen equivalent of bacterial cells, taken as 1.42.

[0119] When removing carbon-containing pollutants, 0.7-1.2 kg O2 can be used to remove each kilogram of BOD5. The above-mentioned biological reaction tank can also be called an aeration tank.

[0120] Compared with considering a single parameter, the embodiment of the present application can fully consider the carbon, nitrogen and nitrate content in the water, making aeration more accurate.

[0121] After obtaining the above-mentioned various parameters, step 203 is executed.

[0122] Step 203, obtaining the oxygen demand for aeration treatment of the target site according to the carbonization oxygen demand, the nitrification oxygen demand and the denitrification oxygen production.

[0123] In a sewage treatment plant, the oxygen demand for aeration treatment of sewage can also be referred to as sewage oxygen demand.

[0124] In some embodiments, the carbonization oxygen demand and the nitrification oxygen demand are summed to obtain a sum of oxygen demand values; and the nitrification denitrification oxygen production is subtracted from the sum of oxygen demand values ​​to obtain the oxygen demand for aeration treatment.

[0125] That is, the oxygen demand for aeration treatment = carbonization oxygen demand + nitrification oxygen demand - nitrification denitrification oxygen production.

[0126] Step 204, obtaining a target aeration volume of the target site according to the oxygen demand of the aeration treatment and the oxygen utilization rate of the aeration equipment.

[0127] In some embodiments, the target aeration amount may be obtained according to the ratio of the oxygen demand of the aeration process and the oxygen utilization rate of the aeration equipment.

[0128] In other embodiments, taking into account different equipment characteristics, the depth below the water surface, water temperature, the total oxygen transfer characteristics of the sewage, the local altitude, the expected dissolved oxygen concentration in the biological reactor and other factors, this embodiment converts the calculated oxygen demand for aeration treatment into the oxygen demand for aeration treatment under standard conditions, and obtains the target aeration volume based on the oxygen demand for aeration treatment under standard conditions and the oxygen utilization rate of the aeration equipment.

[0129] Specifically, please refer to Figure 3 As shown, step 204 further includes:

[0130] Step 301, obtaining an oxygen demand correction coefficient according to the absolute pressure of the aeration equipment and the oxygen content of the gas overflowing from the aeration tank.

[0131] Specifically, the oxygen demand correction factor formula is as follows;

[0132]

[0133]

[0134]

[0135] in,

[0136] Ko——oxygen demand correction factor;

[0137] C S ——The saturated dissolved oxygen concentration in clean water under standard conditions, mg / L, is taken as 9.17;

[0138] α——The ratio of the total oxygen transfer coefficient in the mixed liquid to the oxygen transfer coefficient in the clean water, generally 0.80~0.85;

[0139] β——The ratio of the saturated dissolved oxygen value of the mixed solution to the saturated dissolved oxygen in the clean water, generally 0.90~0.97;

[0140] C sw ——T℃, actual calculated pressure, saturated dissolved oxygen on the surface of clean water, mg / L;

[0141] C o ——Residual dissolved oxygen in the mixed solution, mg / L, usually 2;

[0142] T——mixed liquid temperature, °C, generally 5 to 30;

[0143] C sm ——T℃, average solubility value in clean water from the depth of the aeration device to the pool surface when the actual calculation pressure is used, mg / L;

[0144] O t ——Oxygen content in the gas escaping from the aeration tank, %;

[0145] Pb——absolute pressure of the aeration device, MPa;

[0146] E A ——Oxygen utilization rate of aeration equipment, %.

[0147] The above-mentioned mixed liquid refers to the liquid in the aeration tank, that is, sewage.

[0148] After the oxygen demand correction coefficient is obtained, step 302 is executed.

[0149] Step 302: multiply the oxygen demand of aeration treatment by the oxygen demand correction coefficient to obtain the oxygen demand of aeration treatment under standard conditions.

[0150] Specifically, the oxygen demand for aeration treatment under standard conditions is as follows:

[0151] O S =K o O2,

[0152] Among them, O S ——Oxygen demand for aeration treatment under standard conditions, kgO2 / d;

[0153] K o ——oxygen demand correction factor;

[0154] O2——oxygen demand for aeration treatment, kgO2 / d.

[0155] After obtaining the oxygen demand of the aeration treatment under the standard state, step 303 may be executed.

[0156] Step 303, obtaining a target aeration volume according to the ratio of the oxygen demand of the aeration treatment under the standard state to the oxygen utilization rate of the aeration equipment.

[0157] Specifically, the target aeration volume formula is as follows:

[0158]

[0159] Among them, G S ——Gas supply under standard conditions, m 3 / h;

[0160] O S ——Oxygen demand for aeration treatment under standard conditions, kgO2 / h.

[0161] After the target aeration volume and the target dissolved oxygen concentration are obtained, step 203 and step 204 may be executed.

[0162] Step 205 , transmitting the target aeration volume and the target dissolved oxygen concentration to the on-site control equipment of the target site.

[0163] The on-site control equipment of the target site can adjust the aeration volume of the aeration equipment according to the target aeration volume and the target dissolved oxygen concentration.

[0164] In some embodiments, reference Figure 1 As shown, the field control device may include at least: an aeration fan control device 102 and an aeration branch pipe control device 103, the aeration fan control device is used to calculate a first aeration control parameter of the aeration fan in the aeration device according to the target dissolved oxygen concentration and the target aeration amount, and adjust the total aeration amount of the aeration device according to the first aeration control parameter;

[0165] The aeration branch pipe control device is used to calculate the second aeration control parameter of each aeration branch pipe in the aeration device according to the target dissolved oxygen concentration and the target aeration amount, and allocate the total aeration amount to each dissolved oxygen control zone corresponding to each aeration branch pipe according to the second aeration control parameter.

[0166] Furthermore, the aeration fan control device also collects the first field data of the target site in real time, and determines the first aeration control parameter according to the first field data of the target site, the target dissolved oxygen concentration and the target aeration volume, so that the aeration fan control device can control the total aeration volume of the aeration device in real time. If the target dissolved oxygen concentration is not reached after the preset time period is controlled by the first aeration control parameter, the field data is continuously collected, and then the control is performed again until the target dissolved oxygen concentration is reached in the aeration tank. That is, feedback closed-loop control of the aeration device is realized.

[0167] Exemplary, reference Figure 1As shown, the target site acquired by the aeration fan control device, such as the field data of the sewage aeration treatment plant, includes: the current aeration flow G and pressure signal P of each aeration branch pipe. The controller obtains the first aeration control parameters of the aeration fan in the aeration equipment, such as the total air volume of the aeration fan and the operating frequency of the aeration fan, based on the target aeration volume and the target dissolved oxygen concentration, the current aeration flow G and pressure signal P of each aeration branch pipe, and adjusts the total air volume of the fan through the aeration fan control device.

[0168] The above is a control method for an aeration fan control device. The following briefly describes a control method for an aeration branch pipe control device.

[0169] In some embodiments, the aeration branch pipe control device collects the second field data in real time, obtains the second control parameter through the second field data, the target dissolved oxygen concentration and the target aeration volume, and adjusts each aeration branch pipe through the second control parameter until the dissolved oxygen concentration collected on site reaches the target dissolved oxygen concentration, that is, feedback closed-loop control of the dissolved oxygen concentration is achieved.

[0170] Specifically, the second field data may be the dissolved oxygen concentration collected on site, and the second aeration control parameter may include the aeration volume of each aeration branch pipe, the valve opening of each aeration branch pipe, and the pressure signal of the aeration branch pipe.

[0171] like Figure 1 In the process, the aeration branch control equipment will collect the dissolved oxygen measurements currently measured in each dissolved oxygen control zone.

[0172] One aeration tank may correspond to one target dissolved oxygen concentration, or each dissolved oxygen control area in the aeration tank may correspond to one target dissolved oxygen concentration.

[0173] The above is a method for automatically controlling aeration volume based on an aeration treatment model to achieve intelligent control of aeration volume. In the aeration volume intelligent control system of the embodiment of the present application, a central control room host computer configuration that is communicatively connected to the controller 101 can also be provided. The user can set the aeration volume control mode in the central control room host computer configuration. The aeration volume control modes include: non-automatic aeration volume control mode, non-intelligent automatic aeration volume control mode, and automatic aeration volume intelligent control mode.

[0174] The automatic aeration volume intelligent control mode corresponds to the aeration volume intelligent control method in steps 201 to 205 above.

[0175] For the non-automatic aeration volume control mode, the user manually sets the aeration control parameters, such as the first control parameter and the second control parameter, in the human-computer interaction interface configured in the control room host computer, and manually determines whether the target dissolved oxygen concentration is reached and whether to continue regulation.

[0176] For the non-intelligent automatic aeration volume control mode, the controller 101 may be preset with a target aeration volume and a target dissolved oxygen concentration, or the preset target aeration volume and a target dissolved oxygen concentration may be obtained from the upper computer configuration in the central control room, so that the aeration fan control device and the aeration branch pipe control device can regulate the dissolved oxygen concentration.

[0177] The embodiment of the present application creates an aeration treatment model based on the principle of the activated sludge model, which provides a reliable theoretical basis for the process operation and predictive control of the target site. The embodiment of the present application also continuously optimizes the aeration treatment model through the historical data of the target site to ensure the precise control of the aeration link. On the basis of meeting the process standards, it provides a factual basis for energy saving and consumption reduction, and ultimately achieves the goal of energy saving and consumption reduction of the aeration process of the target site, and saves human resources for aeration control.

[0178] The embodiment of the present application realizes precise control of the aeration process, and while ensuring the stability of the environmental conditions of the biochemical reaction during the aeration treatment process, it can also avoid the increase in energy consumption caused by overexposure, thereby realizing energy-saving aeration.

[0179] In addition, since overexposure will lead to excessive dissolved oxygen concentration, excessive dissolved oxygen concentration will lead to microbial peroxidation, the decomposition process of organic pollutants will be greatly accelerated, which will cause the microorganisms, mainly aerobic bacteria in the activated sludge, to lack nutrient sources in the later stage, thereby reducing the activity of aerobic bacteria, which is not conducive to the later biochemical reaction process, and the activated sludge will also age, causing sludge swelling. Therefore, the embodiment of the present application uses precise aeration to facilitate the normal progress of the later biochemical reaction and reduce the occurrence of sludge swelling caused by aging of activated sludge.

[0180] The present application also provides an aeration volume intelligent control device. The aeration volume intelligent control device can refer to Figure 4 As shown, the aeration volume intelligent control device is applied to a controller, the controller is connected to a field control device of a target site with aeration demand, the field control device of the target site is used to control the aeration volume of the aeration device of the target site, and the aeration volume intelligent control device includes:

[0181] The acquisition module 401 is used to acquire aeration reference parameters of the target site, wherein the aeration reference parameters include: influent flow rate, chemical oxygen demand and ammonia nitrogen content;

[0182] The target value acquisition module 402 is used to obtain the target dissolved oxygen concentration, carbonization oxygen demand, nitrification oxygen demand, and denitrification oxygen production of the aeration treatment through the aeration treatment model and the aeration reference parameters, wherein the aeration treatment model is established based on the activated sludge model; the oxygen demand for aeration treatment of the target site is obtained according to the carbonization oxygen demand, nitrification oxygen demand, and denitrification oxygen production; the target aeration volume is obtained according to the oxygen demand for aeration treatment and the oxygen utilization rate of the aeration equipment;

[0183] The target value transmission module 403 is used to transmit the target aeration amount and the target dissolved oxygen concentration to the on-site control equipment of the target site, so that the on-site control equipment of the target site can adjust the aeration amount of the aeration equipment according to the target aeration amount and the target dissolved oxygen concentration.

[0184] In some embodiments of the present application, the target value acquisition module 402 is further used to sum the carbonization oxygen demand and the nitrification oxygen demand to obtain the oxygen demand sum value; and to subtract the nitrification denitrification oxygen production from the oxygen demand sum value to obtain the oxygen demand for aeration treatment.

[0185] In some embodiments of the present application, the target value acquisition module 402 is further used to obtain an oxygen demand correction coefficient based on the absolute pressure of the aeration equipment and the oxygen content of the gas overflowing from the aeration tank; multiply the oxygen demand of the aeration treatment by the oxygen demand correction coefficient to obtain the oxygen demand of the aeration treatment under standard conditions; and obtain the target aeration volume based on the ratio of the oxygen demand of the aeration treatment under the standard conditions to the oxygen utilization rate of the aeration equipment.

[0186] In some embodiments of the present application, the field control device includes: an aeration fan control device and an aeration branch pipe control device, wherein the aeration fan control device is used to calculate a first aeration control parameter of the aeration fan in the aeration device according to the target dissolved oxygen concentration and the target aeration amount, and adjust the total aeration amount of the aeration device according to the first aeration control parameter;

[0187] The aeration branch pipe control device is used to calculate the second aeration control parameter of each aeration branch pipe in the aeration device according to the target dissolved oxygen concentration and the target aeration volume, and allocate the total aeration volume to each dissolved oxygen control zone corresponding to each aeration branch pipe according to the second aeration control parameter.

[0188] In some embodiments of the present application, the target value acquisition module 402 is further used to input the dissolved oxygen concentration required to be achieved by the aeration tank in the target site currently set and the aeration reference parameter into the aeration treatment model to obtain the predicted aeration result parameter within the future preset time period; if the predicted aeration result parameter within the future preset time period reaches the target aeration result parameter standard, the dissolved oxygen concentration required to be achieved by the currently set aeration tank is used as the target dissolved oxygen concentration; if the predicted aeration result parameter within the future preset time period does not reach the target aeration result parameter standard, the dissolved oxygen concentration is adjusted, and the adjusted dissolved oxygen concentration is re-input into the aeration treatment model until the predicted aeration result parameter within the future preset time period reaches the target aeration result parameter standard. The aeration treatment plant model of the embodiment of the present application can predict the aeration result parameter based on the aeration reference parameter, and provides a reference basis for the setting of the target dissolved oxygen concentration, so that the set target dissolved oxygen concentration is more in line with the biochemical reaction process in the target site, thereby improving the aeration effect.

[0189] In some embodiments of the present application, the target value acquisition module 402 is further used to input the dissolved oxygen concentrations required to be achieved in each currently set dissolved oxygen control zone and the aeration reference parameters into the aeration treatment model to obtain the predicted aeration result parameters within the future preset time period; the dissolved oxygen concentrations required to be achieved in each dissolved oxygen control zone are used as the target dissolved oxygen concentrations corresponding to each dissolved oxygen control zone; the dissolved oxygen concentrations required to be achieved in each dissolved oxygen control zone are adjusted, and the adjusted dissolved oxygen concentrations required to be achieved in each dissolved oxygen control zone are re-input into the aeration treatment model. The embodiment of the present application sets a target dissolved oxygen concentration for each dissolved oxygen control in the aeration tank, realizes precise control of dissolved oxygen in each dissolved oxygen control zone, and further improves the aeration effect.

[0190] In some embodiments of the present application, the target value acquisition module 402 is further used to obtain historical parameters of aeration treatment within a preset time period; wherein the historical parameters include: historical aeration reference parameters of the target site, and historical aeration result parameters; inputting the historical aeration reference parameters into the current aeration treatment model to obtain predicted aeration result parameters; and adjusting the model parameters in the current aeration treatment model according to the predicted aeration result parameters and the historical aeration result parameters.

[0191] The embodiment of the present application further provides a controller, which integrates any aeration device provided in the embodiment of the present application and applied to a sewage aeration treatment plant, and the controller includes:

[0192] one or more processors;

[0193] Memory; and

[0194] One or more applications, wherein the one or more applications are stored in the memory and are configured to cause the processor to execute the steps of the aeration volume intelligent control method described in any of the above-mentioned aeration volume intelligent control method embodiments.

[0195] The present application also provides a controller that integrates any of the aeration volume intelligent control devices provided in the present application. Figure 5 As shown, it shows a schematic diagram of the structure of the controller involved in the embodiment of the present application, specifically:

[0196] The controller may include one or more processors 501 of processing cores, one or more computer-readable storage media memories 502, a power supply 503, an input unit 504 and other components. Those skilled in the art will appreciate that Figure 5 The controller structure shown in the figure does not constitute a limitation of the controller, and may include more or less components than shown in the figure, or combine certain components, or arrange the components differently.

[0197] in:

[0198] The processor 501 is the control center of the controller, and uses various interfaces and lines to connect various parts of the entire controller. By running or executing software programs and / or modules stored in the memory 502, and calling data stored in the memory 502, the processor 501 performs various functions of the controller and processes data, thereby monitoring the controller as a whole. Optionally, the processor 501 may include one or more processing cores; preferably, the processor 501 may integrate an application processor and a modem processor, wherein the application processor mainly processes the operating system, user interface, and application programs, and the modem processor mainly processes wireless communications. It is understandable that the above-mentioned modem processor may not be integrated into the processor 501.

[0199] The memory 502 can be used to store software programs and modules. The processor 501 executes various functional applications and data processing by running the software programs and modules stored in the memory 502. The memory 502 may mainly include a program storage area and a data storage area, wherein the program storage area may store an operating system, an application required for at least one function (such as a sound playback function, an image playback function, etc.), etc.; the data storage area may store data created according to the use of the controller, etc. In addition, the memory 502 may include a high-speed random access memory, and may also include a non-volatile memory, such as at least one disk storage device, a flash memory device, or other volatile solid-state storage devices. Accordingly, the memory 502 may also include a memory controller to provide the processor 501 with access to the memory 502.

[0200] The controller also includes a power supply 503 for supplying power to each component. Preferably, the power supply 503 can be logically connected to the processor 501 through a power management system, so as to manage charging, discharging, and power consumption through the power management system. The power supply 503 can also include any components such as one or more DC or AC power supplies, recharging systems, power failure detection circuits, power converters or inverters, and power status indicators.

[0201] The controller may further include an input unit 504, which may be used to receive input digital or character information and generate keyboard, mouse, joystick, optical or trackball signal input related to user settings and function control.

[0202] Although not shown, the controller may further include a display unit, etc., which will not be described in detail herein. Specifically in this embodiment, the processor 501 in the controller will load the executable files corresponding to the processes of one or more application programs into the memory 502 according to the following instructions, and the processor 501 will run the application programs stored in the memory 502, thereby realizing various functions.

[0203] A person of ordinary skill in the art will appreciate that all or part of the steps in the various methods of the above embodiments may be completed by instructions, or by controlling related hardware through instructions. The instructions may be stored in a computer-readable storage medium and loaded and executed by a processor.

[0204] To this end, an embodiment of the present application provides a computer-readable storage medium, which may include: a read-only memory (ROM), a random access memory (RAM), a disk or an optical disk, etc. A computer program is stored thereon, and the computer program is loaded by a processor to execute the steps in any one of the aeration volume intelligent control methods provided in the embodiments of the present application.

[0205] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, please refer to the detailed description of other embodiments above, and will not be repeated here.

[0206] In specific implementation, the above units or structures can be implemented as independent entities, or can be arbitrarily combined to be implemented as the same or several entities. The specific implementation of the above units or structures can refer to the previous method embodiments, which will not be repeated here.

[0207] The specific implementation of the above operations can be found in the previous embodiments, which will not be described in detail here.

[0208] The above is a detailed introduction to an aeration volume intelligent control method, device, controller and storage medium provided in the embodiments of the present application. Specific examples are used in this article to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method and core idea of ​​the present application. At the same time, for technicians in this field, according to the idea of ​​the present application, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.

Claims

1. An intelligent control method for aeration volume, characterized in that: Applied to a controller, the controller is connected to a field control device of a target site with aeration demand, the field control device of the target site is used to control the aeration amount of the aeration device of the target site, and the aeration amount intelligent control method includes: Acquiring aeration reference parameters of the target site, wherein the aeration reference parameters include influent flow, chemical oxygen demand, and ammonia nitrogen content; The target dissolved oxygen concentration, carbonization oxygen demand, nitrification oxygen demand, and denitrification oxygen production of aeration treatment are obtained through an aeration treatment model and the aeration reference parameters, wherein the aeration treatment model is established based on an activated sludge model; Obtaining the oxygen demand for aeration treatment of the target site according to the carbonization oxygen demand, nitrification oxygen demand and denitrification oxygen production; Obtaining a target aeration volume for the target site according to the oxygen demand for the aeration treatment and the oxygen utilization rate of the aeration equipment; Transmitting the target aeration volume and the target dissolved oxygen concentration to an on-site control device at a target site, so that the on-site control device at the target site can adjust the aeration volume of the aeration device according to the target aeration volume and the target dissolved oxygen concentration; The target dissolved oxygen concentration of the aeration treatment is obtained by using the aeration treatment model and the aeration reference parameter, including: inputting the dissolved oxygen concentration required to be reached by the aeration tank in the target site and the aeration reference parameter into the aeration treatment model to obtain the predicted aeration result parameter within a preset future time period; if the predicted aeration result parameter within the preset future time period reaches the target aeration result parameter standard, the dissolved oxygen concentration required to be reached by the currently set aeration tank is used as the target dissolved oxygen concentration; if the predicted aeration result parameter within the preset future time period does not reach the target aeration result parameter standard, adjusting the dissolved oxygen concentration, and re-inputting the adjusted dissolved oxygen concentration into the aeration treatment model until the predicted aeration result parameter within the preset future time period reaches the target aeration result parameter standard, so that the oxygen transfer rate in the target site is approximately equal to the oxygen consumption rate; The aeration treatment model includes an input model, a biokinetic model, an aeration model, and an output model, wherein the model parameters include physical size data of the target site, recommended values ​​of aeration reference parameters, load parameters of the target site, operating parameters of the target site, and kinetic parameters and stoichiometric parameters of the activated sludge model; The field control device comprises: an aeration fan control device and an aeration branch pipe control device, wherein the aeration fan control device is used to calculate a first aeration control parameter of the aeration fan in the aeration device according to the target dissolved oxygen concentration and the target aeration amount, and adjust the total aeration amount of the aeration device according to the first aeration control parameter; The aeration branch pipe control device is used to calculate the second aeration control parameter of each aeration branch pipe in the aeration equipment according to the target dissolved oxygen concentration and the target aeration volume, and allocate the total aeration volume to each dissolved oxygen control zone corresponding to each aeration branch pipe according to the second aeration control parameter, and the dissolved oxygen control zone includes a denitrification zone for denitrification and an anaerobic zone for phosphorus release.

2. The aeration volume intelligent control method according to claim 1, characterized in that: The oxygen demand for aeration treatment of the target site is obtained according to the carbonization oxygen demand, the nitrification oxygen demand and the denitrification oxygen production, including: The carbonization oxygen demand and the nitrification oxygen demand are summed to obtain a sum of oxygen demand values; The oxygen demand for aeration treatment is obtained by subtracting the oxygen production of nitrification and denitrification from the oxygen demand value.

3. The aeration volume intelligent control method according to claim 1, characterized in that: The step of obtaining the target aeration volume of the target site according to the oxygen demand of the aeration treatment and the oxygen utilization rate of the aeration equipment includes: Obtaining an oxygen demand correction factor based on the absolute pressure of the aeration equipment and the oxygen content of the gas overflowing from the aeration tank; Multiplying the oxygen demand for aeration treatment by the oxygen demand correction coefficient to obtain the oxygen demand for aeration treatment under standard conditions; The target aeration volume is obtained according to the ratio of the oxygen demand of the aeration treatment under the standard state to the oxygen utilization rate of the aeration equipment.

4. The aeration volume intelligent control method according to claim 1, characterized in that: The step of inputting the required dissolved oxygen concentration of the aeration pool in the target site and the aeration reference parameters into the aeration treatment model to obtain the predicted aeration result parameters within a preset future time period includes: Inputting the dissolved oxygen concentrations required to be achieved in each dissolved oxygen control zone currently set and the aeration reference into the aeration treatment model respectively, and obtaining the predicted aeration result parameters within a future preset time period; The method of taking the dissolved oxygen concentration required to be achieved in the currently set aeration tank as the target dissolved oxygen concentration includes: The dissolved oxygen concentrations required to be achieved in each dissolved oxygen control zone are used as target dissolved oxygen concentrations corresponding to each dissolved oxygen control zone; The step of adjusting the dissolved oxygen concentration and re-inputting the adjusted dissolved oxygen concentration into the aeration treatment model comprises: The dissolved oxygen concentrations required to be achieved in each dissolved oxygen control zone are adjusted, and the adjusted dissolved oxygen concentrations required to be achieved in each dissolved oxygen control zone are re-input into the aeration treatment model.

5. The aeration volume intelligent control method according to claim 1, characterized in that: The aeration volume intelligent control method further includes: Obtaining historical parameters of the target site within a preset time period; wherein the historical parameters include: historical aeration reference parameters of the target site, and historical aeration result parameters; Inputting the historical aeration reference parameters into the current aeration treatment model to obtain predicted aeration result parameters; The model parameters in the current aeration treatment model are adjusted according to the predicted aeration result parameters and the historical aeration result parameters.

6. An intelligent aeration volume control device, characterized in that: Applied to a controller, the controller is connected to a field control device of a target site with aeration demand, the field control device of the target site is used to control the aeration amount of the aeration equipment of the target site, and the aeration amount intelligent control device includes: An acquisition module, used to acquire aeration reference parameters of the target site, wherein the aeration reference parameters include: influent flow, chemical oxygen demand and ammonia nitrogen content; A target value acquisition module is used to obtain the target dissolved oxygen concentration, carbonization oxygen demand, nitrification oxygen demand, and denitrification oxygen production of aeration treatment through an aeration treatment model and the aeration reference parameters, wherein the aeration treatment model is established based on an activated sludge model; the oxygen demand for aeration treatment of the target site is obtained according to the carbonization oxygen demand, nitrification oxygen demand, and denitrification oxygen production; the target aeration volume of the target site is obtained according to the oxygen demand for aeration treatment and the oxygen utilization rate of the aeration equipment; A target value transmission module, used for transmitting the target aeration amount and the target dissolved oxygen concentration to the on-site control equipment of the target site, so that the on-site control equipment of the target site can adjust the aeration amount of the aeration equipment according to the target aeration amount and the target dissolved oxygen concentration; The target dissolved oxygen concentration of the aeration treatment is obtained by using the aeration treatment model and the aeration reference parameter, including: inputting the dissolved oxygen concentration required to be reached by the aeration tank in the target site and the aeration reference parameter into the aeration treatment model to obtain the predicted aeration result parameter within a preset future time period; if the predicted aeration result parameter within the preset future time period reaches the target aeration result parameter standard, the dissolved oxygen concentration required to be reached by the currently set aeration tank is used as the target dissolved oxygen concentration; if the predicted aeration result parameter within the preset future time period does not reach the target aeration result parameter standard, adjusting the dissolved oxygen concentration, and re-inputting the adjusted dissolved oxygen concentration into the aeration treatment model until the predicted aeration result parameter within the preset future time period reaches the target aeration result parameter standard, so that the oxygen transfer rate in the target site is approximately equal to the oxygen consumption rate; The aeration treatment model includes an input model, a biokinetic model, an aeration model, and an output model, wherein the model parameters include physical size data of the target site, recommended values ​​of aeration reference parameters, load parameters of the target site, operating parameters of the target site, and kinetic parameters and stoichiometric parameters of the activated sludge model; The field control device comprises: an aeration fan control device and an aeration branch pipe control device, wherein the aeration fan control device is used to calculate a first aeration control parameter of the aeration fan in the aeration device according to the target dissolved oxygen concentration and the target aeration amount, and adjust the total aeration amount of the aeration device according to the first aeration control parameter; The aeration branch pipe control device is used to calculate the second aeration control parameter of each aeration branch pipe in the aeration equipment according to the target dissolved oxygen concentration and the target aeration volume, and allocate the total aeration volume to each dissolved oxygen control zone corresponding to each aeration branch pipe according to the second aeration control parameter, and the dissolved oxygen control zone includes a denitrification zone for denitrification and an anaerobic zone for phosphorus release.

7. A controller, characterized in that: The controller comprises: one or more processors; Memory; and One or more applications, wherein the one or more applications are stored in the memory and configured to be executed by the processor to implement the aeration volume intelligent control method according to any one of claims 1 to 5.

8. A computer-readable storage medium, characterized in that: A computer program is stored thereon, and the computer program is loaded by a processor to execute the steps of the aeration volume intelligent control method according to any one of claims 1 to 5.

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