An oxygen scavenging dynamic DO aeration control method and apparatus

Abstract

The embodiment of the present specification provides an oxygen capture dynamic DO aeration control method and equipment. The oxygen capture dynamic DO aeration control method comprises: determining an initial mapping relationship between a blowing parameter and an oxygen transfer efficiency; obtaining a current oxygen transfer efficiency in a water body; determining a first target blowing parameter of a blower based on the current oxygen transfer efficiency and the initial mapping relationship. The oxygen capture dynamic DO aeration control equipment comprises: a control cabinet, an aeration pipeline, a blower and an oxygen transfer efficiency analyzer; the control cabinet and / or the oxygen transfer efficiency analyzer comprises one or more processors; the one or more processors comprise: a mapping relationship determination module, an oxygen transfer efficiency obtaining module and a blowing parameter determination module, for executing the oxygen capture dynamic DO aeration control method.

Description

[0001] This application is a divisional application of Chinese application filed on January 19, 2023, with application number 202310070428.2 and invention title "A method and equipment for controlling dynamic DO aeration by capturing oxygen". Technical Field

[0002] This manual relates to the field of wastewater treatment, and in particular to a method and equipment for dynamic DO aeration control by oxygen capture. Background Technology

[0003] In my country, the main energy consumption of wastewater treatment plants is electricity. Municipal wastewater treatment plants consume about 0.3 kWh per ton of wastewater treated, while industrial wastewater treatment plants consume more than 1 kWh per ton of wastewater treated. Electricity costs account for about 50%-70% of the total cost of wastewater treatment.

[0004] For aeration control in aerobic tanks of wastewater treatment plants, the mainstream technology on the market currently relies on dissolved oxygen (DO) control strategies. This method requires setting a target DO value and adjusting the blower airflow based on the actual DO value in the aerobic tank to maintain consistency between the actual DO value and the target value. While this method achieves some results compared to traditional manual, extensive blower control, its technical principle primarily relies on a fixed DO value control method. Furthermore, it is overly dependent on instruments, requires significant maintenance in corrosive environments, and suffers from poor stability of the control equipment. Moreover, a single DO value cannot accurately reflect the activity state of microorganisms in the mixed liquor or the water quality condition, limiting its function to aeration control. Therefore, it is necessary to propose an aeration control method and equipment that can more accurately reflect the activity state of microorganisms and the water quality condition. Summary of the Invention

[0005] One embodiment of this specification provides an oxygen capture dynamic DO aeration control method. This aeration control method includes: determining an initial mapping relationship between blower parameters and oxygen transfer efficiency; obtaining the current oxygen transfer efficiency in the water body; and determining a first target blower parameter based on the current oxygen transfer efficiency and the initial mapping relationship.

[0006] In some embodiments, determining the initial mapping relationship between aeration parameters and oxygen transfer efficiency includes: obtaining multiple calibrated oxygen transfer efficiencies of the water body after continuous aeration for a first preset duration under multiple preset aeration parameters; and determining the initial mapping relationship based on the multiple preset aeration parameters and the multiple calibrated oxygen transfer efficiencies.

[0007] In some embodiments, the aeration control method further includes: continuously aerating the water body for a second preset duration based on the first target blower parameter; obtaining the actual oxygen transfer efficiency of the water body after aeration; and determining the second target blower parameter based on the actual oxygen transfer efficiency and the initial mapping relationship.

[0008] In some embodiments, the aeration control method further includes updating the initial mapping relationship based on the actual oxygen transfer efficiency.

[0009] In some embodiments, updating the initial mapping relationship based on the actual oxygen transfer efficiency includes: updating the oxygen transfer efficiency mapping value of the first target blower parameter to the actual oxygen transfer efficiency.

[0010] In some embodiments, the aeration control method further includes: aerating the water body based on the first target blower parameters; monitoring the dissolved oxygen value of the water body during aeration; and performing an alert operation in response to the dissolved oxygen value being lower than a first preset threshold or higher than a second preset threshold.

[0011] One embodiment of this specification provides an oxygen capture dynamic DO aeration control device. The aeration control device includes: a control cabinet, aeration pipeline, a blower, and an oxygen transfer efficiency analyzer; the control cabinet and / or the oxygen transfer efficiency analyzer includes one or more processors; the one or more processors include: a mapping relationship determination module for determining an initial mapping relationship between blower parameters and oxygen transfer efficiency; an oxygen transfer efficiency acquisition module for acquiring the current oxygen transfer efficiency in the water body; and a blower parameter determination module for determining a first target blower parameter based on the current oxygen transfer efficiency and the initial mapping relationship.

[0012] One embodiment of this specification provides another method for controlling dynamic oxygen capture (DO) aeration. This aeration control method includes: determining a target mapping relationship between blower parameters and oxygen transfer efficiency; obtaining the current oxygen transfer efficiency in the water body; and determining target blower parameters based on the current oxygen transfer efficiency and the target mapping relationship.

[0013] In some embodiments, determining the target mapping relationship between the blower parameters and the oxygen transfer efficiency includes: obtaining an initial mapping relationship between the blower parameters and the oxygen transfer efficiency; and iteratively updating the initial mapping relationship to determine the target mapping relationship.

[0014] In some embodiments, obtaining the initial mapping relationship between aeration parameters and oxygen transfer efficiency includes: obtaining multiple calibrated oxygen transfer efficiencies of the water body after continuous aeration for a first preset duration under multiple preset aeration parameters; and determining the initial mapping relationship based on the multiple preset aeration parameters and the multiple calibrated oxygen transfer efficiencies.

[0015] In some embodiments, the iterative update includes: obtaining a first oxygen transfer efficiency in the water body during the current iteration; determining a first aeration parameter of the blower based on the first oxygen transfer efficiency and the current mapping relationship of the current iteration, wherein the first oxygen transfer efficiency is a mapping value of the first aeration parameter in the current mapping relationship; obtaining a second oxygen transfer efficiency of the water body after continuous aeration for a second preset duration under the first aeration parameter; determining a second aeration parameter of the blower based on the second oxygen transfer efficiency and the current mapping relationship, wherein the second oxygen transfer efficiency is a mapping value of the second aeration parameter in the current mapping relationship; re-determining the mapping value of the first aeration parameter as the second oxygen transfer efficiency to update the current mapping relationship; and obtaining a third oxygen transfer efficiency of the water body after continuous aeration for a second preset duration under the second aeration parameter, and using the third oxygen transfer efficiency as the first oxygen transfer efficiency of the next iteration.

[0016] In some embodiments, the aeration control method further includes: aerating the water body based on the target blower parameters; monitoring the dissolved oxygen value of the water body during aeration; and performing an alert operation in response to the dissolved oxygen value being lower than a first preset threshold or higher than a second preset threshold.

[0017] One embodiment of this specification provides another oxygen capture dynamic DO aeration control device. This aeration control device includes: a control cabinet, aeration piping, a blower, and an oxygen transfer efficiency analyzer; the control cabinet and / or the oxygen transfer efficiency analyzer includes one or more processors; the one or more processors include: a mapping relationship determination module, used to determine an initial mapping relationship and / or a target mapping relationship between blower parameters and oxygen transfer efficiency; an oxygen transfer efficiency acquisition module, used to acquire the current oxygen transfer efficiency in the water body; and a blower parameter determination module, used to determine the target blower parameters based on the current oxygen transfer efficiency and the target mapping relationship. Attached Figure Description

[0018] This specification will be further described by way of exemplary embodiments, which will be described in detail with reference to the accompanying drawings. These embodiments are not limiting; in these embodiments, the same reference numerals denote the same structures, wherein:

[0019] Figure 1 This is a structural schematic diagram of the aeration control equipment shown in some embodiments of this specification;

[0020] Figure 2 This is a block diagram of the processor of the aeration control device according to some embodiments of this specification;

[0021] Figure 3This is an exemplary flowchart of an aeration control method according to some embodiments of this specification;

[0022] Figure 4 This is an exemplary flowchart of the method for determining the initial mapping relationship in the aeration control method shown in some embodiments of this specification;

[0023] Figure 5 This is yet another exemplary flowchart of an aeration control method shown in some embodiments of this specification;

[0024] Figure 6 This is a schematic diagram of the initial mapping relationship (fitting curve) in the aeration control method shown in some embodiments of this specification;

[0025] Figure 7 This is an exemplary flowchart of an aeration control method according to other embodiments of this specification;

[0026] Figure 8 This is an exemplary flowchart of an iterative update method for the target mapping relationship of an aeration control method according to other embodiments of this specification;

[0027] In the diagram: 100, aeration control equipment; 1, control cabinet; 2, aeration pipeline; 3, aerobic tank; 4, blower; 5, oxygen transfer efficiency analyzer. Detailed Implementation

[0028] To more clearly illustrate the technical solutions of the embodiments in this specification, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are merely some examples or embodiments of this specification. For those skilled in the art, these drawings can be applied to other similar scenarios without creative effort. Unless obvious from the context or otherwise specified, the same reference numerals in the drawings represent the same structures or operations.

[0029] It should be understood that the terms “equipment,” “unit,” and / or “module” used herein are one method of distinguishing different components, elements, parts, sections, or assemblies at different levels. However, if other terms can achieve the same purpose, they may be replaced by other expressions.

[0030] As indicated in this specification and claims, unless the context clearly indicates otherwise, the words "a," "an," "an," and / or "the" do not specifically refer to the singular and may also include the plural. Generally speaking, the terms "comprising" and "including" only indicate the inclusion of expressly identified steps and elements, which do not constitute an exclusive list, and the method or apparatus may also include other steps or elements.

[0031] Flowcharts are used in this specification to illustrate the operations performed by the equipment according to embodiments of this specification. It should be understood that the preceding or following operations are not necessarily performed precisely in sequence. Instead, the steps can be processed in reverse order or simultaneously. Furthermore, other operations can be added to these processes, or one or more steps can be removed from them.

[0032] Measuring oxygen transfer efficiency is crucial for assessing on-site wastewater aeration efficiency. Under conditions meeting effluent standards, a well-functioning aeration control system can achieve an aeration efficiency >25%, while a poorly functioning system may have an efficiency <15%. Currently, the mainstream aeration control method primarily involves maintaining a constant dissolved oxygen level in the water. Dissolved oxygen refers to the residual dissolved oxygen in aerobic tank 3. Only a portion of the oxygen entering aerobic tank 3 is consumed by microorganisms; the remainder is converted into residual dissolved oxygen or escapes as exhaust gas. Simply focusing on dissolved oxygen levels is insufficient for a comprehensive understanding of aeration control system efficiency, changes in water pollutant concentrations, microbial activity, and water toxicity. For example, if all microorganisms in aerobic tank 3 die, there is no oxygen consumption, and the residual dissolved oxygen level will rise significantly. Therefore, the traditional method of "maintaining a constant residual dissolved oxygen level in the aerobic tank" is ineffective and poses safety risks. Therefore, this specification proposes an oxygen capture dynamic DO aeration control method and equipment that can more accurately reflect the activity state of microorganisms and water quality in aquatic bodies. The principle behind this oxygen capture dynamic DO aeration control method is as follows: If the pollutant concentration in the water increases, the oxygen mass transfer resistance in the water increases, resulting in insufficient oxygen absorption by the water. This reduces oxygen transfer efficiency, meaning the water's ability to absorb oxygen decreases. In this case, the blower needs to operate at a high airflow rate to ensure sufficient oxygen enters the water. Conversely, if the pollutant concentration decreases, the oxygen mass transfer resistance in the water decreases, making oxygen easier to absorb. This increases oxygen transfer efficiency, meaning the water's ability to absorb oxygen increases. In this case, the blower does not need to operate at a high airflow rate; low airflow is sufficient to ensure sufficient oxygen enters the water.

[0033] The oxygen capture dynamic DO aeration control method provided in some embodiments of this specification controls the aeration rate in the water body by establishing a correlation between the blower parameters and the oxygen transfer efficiency in the water. Specifically, the method first determines the mapping relationship between the blower parameters and the oxygen transfer efficiency, then obtains the current oxygen transfer efficiency in the water body, and then determines the blower parameters for aeration based on the current oxygen transfer efficiency and the mapping relationship, and controls the blower aeration. In some embodiments, the mapping relationship between the blower parameters and the oxygen transfer efficiency may include an initial mapping relationship. In some embodiments, the mapping relationship between the blower parameters and the oxygen transfer efficiency may also include a target mapping relationship. In some embodiments, the mapping relationship between the blower parameters and the oxygen transfer efficiency may also include a current mapping relationship. For a more detailed description of the initial mapping relationship, the target mapping relationship, and the current mapping relationship and their applications, please refer to the description elsewhere in this specification.

[0034] Figure 1 This is a structural schematic diagram of an aeration control device according to some embodiments of this specification.

[0035] like Figure 1 As shown, the aeration control equipment 100 may include a control cabinet 1, an aeration pipeline 2, an aerobic tank 3, a blower 4, and an oxygen transfer efficiency analyzer 5. The oxygen transfer efficiency analyzer 5 is electrically connected to the control cabinet 1, and the control cabinet 1 is electrically connected to the blower 4. The aerobic tank 3 is equipped with the oxygen transfer efficiency analyzer 5. The aeration method of the aerobic tank 3 can be bottom aeration, and it is connected to the blower 4 through the aeration pipeline 2. The oxygen transfer efficiency analyzer 5 detects the oxygen transfer efficiency in the aerobic tank 3 to control the blowing parameters of the blower 4. In some embodiments, the aeration control equipment 100 can be applied to industrial and municipal applications requiring wastewater treatment.

[0036] In some embodiments, the various components of the aeration control equipment 100 can be interconnected via data cables or a network. For example, the oxygen transfer efficiency analyzer 5 and the control cabinet 1 can be connected or communicate via a network.

[0037] The network may include any suitable network capable of facilitating information and / or data exchange within the aeration control equipment 100. In some embodiments, at least one component of the aeration control equipment 100 (e.g., control cabinet 1, aeration piping 2, aerobic tank 3, blower 4, and oxygen transfer efficiency analyzer 5) may exchange information and / or data with at least one other component of the aeration control equipment 100 via the network. For example, control cabinet 1 may obtain the oxygen transfer efficiency detected by oxygen transfer efficiency analyzer 5 from the oxygen transfer efficiency analyzer 5 via the network. In some embodiments, the network may include at least one network access point. For example, the network may include wired and / or wireless network access points (e.g., base stations and / or internet switching points), through which at least one component of the aeration control equipment 100 may connect to the network to exchange data and / or information.

[0038] Control cabinet 1 can be used to control other devices in aeration control equipment 100. For example, control cabinet 1 can control blower 4. As another example, control cabinet 1 can control oxygen transfer efficiency analyzer 5. Control cabinet 1 may include at least one processor. In some embodiments, the processor can process data and / or information obtained from blower 4 or oxygen transfer efficiency analyzer 5. In some embodiments, the processor can process instructions obtained from the network to control other devices (e.g., blower 4) in aeration control equipment 100. In some embodiments, the processor can obtain the current oxygen transfer efficiency from oxygen transfer efficiency analyzer 5 for further calculation to determine the blower parameters of blower 4 at the next moment. As another example, the processor can obtain the initial mapping relationship of aeration control equipment 100 from a storage device as an initial reference for the formal operation of aeration control equipment 100. In some embodiments, the processor can be a single server or a group of servers. The server group can be centralized or distributed. In some embodiments, the processor can be local or remote.

[0039] In some embodiments, the control cabinet 1 may further include a storage device. The storage device may store data, instructions, and / or any other information. In some embodiments, the storage device may store data and / or instructions used by the control cabinet 1 to perform or complete the exemplary methods described herein. In some embodiments, the storage device may store an initial mapping relationship between blower parameters and oxygen transfer efficiency. In some embodiments, the storage device may include a mass storage device, a removable storage device, a volatile read-write storage device, a read-only storage device (ROM), or any combination thereof. In some embodiments, the storage device may be implemented on a cloud platform.

[0040] In some embodiments, the control cabinet 1 may further include an input device. In some embodiments, the input device may be mounted on the control cabinet 1. In some embodiments, the input device may also be external; for example, the input device may communicate with and / or connect to the control cabinet 1, the blower 4, and the oxygen transfer efficiency analyzer 5. In some embodiments, the input device may include a mobile device, tablet computer, laptop computer, etc., or any combination thereof. For example, a mobile device may include a mobile control handle, a personal digital assistant (PDA), a smartphone, etc., or any combination thereof. The input device may employ keyboard input, touchscreen (e.g., with haptic or haptic feedback) input, voice input, eye-tracking input, gesture tracking input, image input, video input, or any other similar input mechanism. Input information received through the input device may be transmitted to the control cabinet 1 via a bus for further processing. Other types of input devices may include cursor control devices, such as a mouse, trackball, or cursor arrow keys. In some embodiments, a user may input remote control signals (e.g., blower parameters) through the input device.

[0041] In some embodiments, the control cabinet 1 may further include output devices. Output devices may include displays, speakers, printers, or any combination thereof. Output devices may be used to output parameters related to the aeration control equipment 100. For example, the display may be used to show relevant information or images related to the wastewater treatment process in the aerobic tank 3, such as the current blowing parameters of the blower 4, the current oxygen transfer efficiency detected by the oxygen transfer efficiency analyzer 5, or an image representing the mapping relationship between blowing parameters and oxygen transfer efficiency.

[0042] It should be noted that the above description is provided for illustrative purposes only and is not intended to limit the scope of this specification. Various changes and modifications can be made by those skilled in the art based on the content of this specification. Features, structures, methods, and other features of the exemplary embodiments described herein can be combined in various ways to obtain other and / or alternative exemplary embodiments. For example, the storage device may be a data storage device including a cloud computing platform, such as a public cloud, private cloud, community cloud, and hybrid cloud. However, these changes and modifications will not depart from the scope of this specification.

[0043] Aeration pipe 2 connects blower 4 and aerobic tank 3, and serves to aerate and oxygenate the water. One end of aeration pipe 2 is connected to the air outlet of blower 4, and the other end is connected to an aeration device located at the bottom of aerobic tank 3. Aeration pipe 2 uses blower 4 to deliver air to the aeration device at the bottom of aerobic tank 3, where it diffuses and escapes in the form of bubbles, dissolving oxygen from the air into the water at the gas-liquid interface. In some embodiments, aeration pipe 2 can be connected to multiple aeration heads of the aeration device. The distribution and number of aeration heads can be set according to the oxygen demand of aerobic tank 3 and the microbial community in the water.

[0044] Aerobic tank 3 is a water tank that maintains water parameters suitable for the growth and reproduction of aerobic microorganisms through aeration and other measures, thereby treating pollutants in the water. In some embodiments, different oxygen environments in aerobic tank 3 are adapted to different microbial communities, and the microorganisms will also change their behavior when the environment changes, thereby achieving the purpose of removing different pollutants.

[0045] Blower 4 is used to supply oxygen to the aerobic tank 3 for aeration, which can increase the oxygen in the microbial community of the aerobic tank 3.

[0046] In some embodiments, the blower 4 can be a variable frequency blower. In some embodiments, the blower 4 can be a magnetic levitation blower, an air levitation blower, a Roots blower with a frequency converter, a centrifugal blower with a frequency converter, or other types of blowers with frequency converters. The specific model of the blower 4 can be selected by calculating the air volume and pressure based on the air-to-water ratio, water depth, pipeline load, etc., and then determining which type of blower, its specific model, and motor power to use.

[0047] The oxygen transfer efficiency analyzer 5 is floated on the liquid surface of the aerobic tank 3 and can collect the oxygen transfer efficiency value in the aerobic tank 3 in real time. The bottom of the oxygen transfer efficiency analyzer 5 is a gas collection hood, which can collect the exhaust gas escaping from the surface of the aerobic tank 3. Then, based on the temperature of the exhaust gas, the flow rate, pressure, water temperature, dissolved oxygen value in the water of the aerobic tank 3, and the depth of the aerobic tank 3, the oxygen transfer efficiency value is calculated. If the pollutant concentration in aerobic tank 3 increases, the oxygen mass transfer resistance in the water increases, resulting in insufficient oxygen absorption by the water. This reduces oxygen transfer efficiency, meaning the water's ability to absorb oxygen decreases. In this case, blower 4 needs to increase its airflow to ensure enough air enters the water in aerobic tank 3. Conversely, if the pollutant concentration in aerobic tank 3 decreases, the oxygen mass transfer resistance in the water decreases, making it easier for the water to absorb oxygen. This increases oxygen transfer efficiency, meaning the water's ability to absorb oxygen increases. In this case, blower 4 does not need to operate at high airflow; low airflow is sufficient to ensure enough oxygen enters the water, and the airflow of blower 4 can be reduced.

[0048] Oxygen transfer efficiency (OTE) refers to the percentage of oxygen transferred to the water in aerobic tank 3 out of the total oxygen supply, and is one of the important parameters for evaluating aeration efficiency. Many factors influence the value of OTE, including the blowing parameters of blower 4, the depth of aerobic tank 3, the water temperature in aerobic tank 3, the distribution, number, and status of aeration heads in aeration pipe 2, the activity state of microorganisms in the water of aerobic tank 3, and the types of water pollutants, etc.

[0049] The control cabinet 1, aeration pipeline 2, aerobic tank 3, blower 4, and oxygen transfer efficiency analyzer 5 described in this specification are all devices well known to those skilled in the art, and there are no special restrictions on their sources in this application.

[0050] It should be noted that the above description is provided for illustrative purposes only and is not intended to limit the scope of this application. Various changes and modifications can be made by those skilled in the art based on the guidance of the content of this application. Features, structures, methods, and other features of the exemplary embodiments described in this application can be combined in various ways to obtain other and / or alternative exemplary embodiments.

[0051] Figure 2 This is a block diagram of the processor of the aeration control device shown in some embodiments of this specification.

[0052] In some embodiments, the control cabinet 1 and / or the oxygen transfer efficiency analyzer 5 may include one or more processors. For example... Figure 2 As shown, one or more processors 200 include: a mapping relationship determination module 210, an oxygen transfer efficiency acquisition module 220, and a blower parameter determination module 230. In some embodiments, the mapping relationship determination module 210, the oxygen transfer efficiency acquisition module 220, and the blower parameter determination module 230 may be implemented by a processor (e.g., the processor in control cabinet 1 and / or oxygen transfer efficiency analyzer 5). In other embodiments, the mapping relationship determination module 210 and the blower parameter determination module 230 may also be located on the processor of control cabinet 1, and the oxygen transfer efficiency acquisition module 220 may be located on the processor of oxygen transfer efficiency analyzer 5.

[0053] In some embodiments, the mapping relationship determination module 210 can be used to determine an initial mapping relationship between the blower parameters and the oxygen transfer efficiency. In some embodiments, the mapping relationship determination module 210 can also be used to update the initial mapping relationship based on the actual oxygen transfer efficiency. In other embodiments, the mapping relationship determination module 210 can also be used to determine a target mapping relationship between the blower parameters and the oxygen transfer efficiency. In other embodiments, the mapping relationship determination module 210 can also be used to iteratively update the target mapping relationship between the blower parameters and the oxygen transfer efficiency.

[0054] In some embodiments, the oxygen transfer efficiency acquisition module 220 can be used to acquire the current oxygen transfer efficiency in the water body. In some embodiments, the oxygen transfer efficiency acquisition module 220 can be used to acquire data collected by the oxygen transfer efficiency analyzer 5.

[0055] In some embodiments, the blower parameter determination module 230 can be used to determine a first target blower parameter for the blower 4 based on the current oxygen transfer efficiency and the initial mapping relationship. In other embodiments, the blower parameter determination module 230 can be used to determine a target blower parameter for the blower 4 based on the current oxygen transfer efficiency and the target mapping relationship.

[0056] In some embodiments, the processor 200 may further include an alert module 240. The alert module 240 may be used to monitor the dissolved oxygen level of the water during aeration and to perform an alert operation in response to when the dissolved oxygen level is lower than a first preset threshold or higher than a second preset threshold.

[0057] Figure 3 This is an exemplary flowchart of an aeration control method according to some embodiments of this specification.

[0058] like Figure 3 As shown, some embodiments of this specification provide an oxygen capture dynamic DO aeration control method, the process 300 of which may include the following steps. In some embodiments, process 300 may be executed by a processor (e.g., the processor of control cabinet 1). For example, process 300 may be implemented as a set of instructions (e.g., an application program) stored in, for example, a storage device of control cabinet 1, a memory external to and accessible by aeration control equipment 100. The processor may execute the instruction set and, when executing the instructions, may be configured to execute process 300. The operational schematic diagram of process 300 presented below is illustrative. In some embodiments, the process may be accomplished using one or more additional operations not described and / or one or more operations not discussed. Additionally, Figure 3 The order of operations shown in and described below in process 300 is not intended to be restrictive.

[0059] Step 310: Determine the initial mapping relationship between the blower parameters and the oxygen transfer efficiency. In some embodiments, step 310 can be performed by the mapping relationship determination module 210.

[0060] The initial mapping relationship between blower parameters and oxygen transfer efficiency refers to the mapping relationship between blower parameters and oxygen transfer efficiency obtained through pre-operation debugging of the aeration control equipment 100 before its formal use. In some embodiments, it can be based on the following... Figure 4 The process determines the initial mapping relationship between blower parameters and oxygen transfer efficiency. This mapping relationship can be a one-to-one relationship (i.e., a one-to-one correspondence between the values ​​of the blower parameters and the oxygen transfer efficiency), and can be represented by curves, functions, tables, etc. In some embodiments, the initial mapping relationship between blower parameters and oxygen transfer efficiency can be represented by a fitted curve, such as... Figure 6 As shown, the blower parameters are plotted on the ordinate and oxygen transfer efficiency on the abscissa. The curve represents the initial mapping relationship, with each point on the curve being a set of mutually mapped blower parameters and oxygen transfer efficiencies. In some embodiments, the initial mapping relationship between blower parameters and oxygen transfer efficiency can be represented by a fitting function, which represents a one-to-one mapping between two sets of data (blower parameters and oxygen transfer efficiency). In some embodiments, the initial mapping relationship between blower parameters and oxygen transfer efficiency can be represented by creating a table. For example, the first column of the table represents the blower parameters, and the second column represents the oxygen transfer efficiency. Blower parameters and oxygen transfer efficiencies located in the same row are the mutually mapped values.

[0061] Step 320: Obtain the current oxygen transfer efficiency in the water body. In some embodiments, step 320 may be performed by the oxygen transfer efficiency acquisition module 220.

[0062] The water body can be a water body that has not yet been aerated (i.e., the water body before the start of sewage treatment), the water body can be a water body at any time during the trial operation, or the water body at any time during the formal operation.

[0063] In some embodiments, the current oxygen transfer efficiency can be the oxygen transfer efficiency of the aeration control equipment 100 at the beginning of its formal operation. In some embodiments, the current oxygen transfer efficiency can also be the oxygen transfer efficiency of the aeration control equipment 100 at a certain point in time during its formal operation, and can be the value of the oxygen transfer efficiency actually collected by the oxygen transfer efficiency analyzer 5. In some embodiments, the current oxygen transfer efficiency can also be a representative value of the oxygen transfer efficiency of the aeration control equipment 100 during a certain preset time period (e.g., within a second preset time period) during its formal operation, wherein the calculation method of the representative value is described below. In some embodiments, the current oxygen transfer efficiency can also be a specific value among the continuously acquired oxygen transfer efficiencies of the water body. For example, when the oxygen transfer efficiency changes significantly, the water body can be continuously aerated, and a representative value can be acquired after the oxygen transfer efficiency is relatively stable. As another example, after the water body aeration ends, the oxygen transfer efficiency analyzer 5 can continuously monitor the oxygen transfer efficiency of the water body, and when the change in the oxygen transfer efficiency in the water body exceeds a preset monitoring range, the oxygen transfer efficiency at this time is taken as the current oxygen transfer efficiency.

[0064] Step 330: Determine the first target blowing parameters for the blower 4 based on the current oxygen transfer efficiency and the initial mapping relationship. In some embodiments, step 330 can be performed by the blowing parameter determination module 230.

[0065] The first target aeration parameter refers to the mapped value of the current oxygen transfer efficiency on the initial mapping relationship. After the first target aeration parameter is determined by the aeration parameter determination module 230, the aeration parameter of the blower 4 is adjusted to the first target aeration parameter so that the blower 4 aerates the aerobic tank 3 with the first target aeration parameter.

[0066] In some embodiments, when the initial mapping relationship between the blower parameters and oxygen transfer efficiency is represented by a fitted curve, the first target blower parameter can be obtained by taking points on the fitted curve. In some embodiments, when the initial mapping relationship between the blower parameters and oxygen transfer efficiency is represented by a fitted function, the first target blower parameter can be obtained by calculating using the fitted function. In some embodiments, when the initial mapping relationship between the blower parameters and oxygen transfer efficiency is represented by a table, the first target blower parameter can be obtained by looking up a table. In some embodiments, the first target blower parameter can be obtained by taking points on the fitted curve, for example... Figure 6 In the process, the initial mapping relationship between the blower parameters and the oxygen transfer efficiency is represented by a fitted curve. When the current oxygen transfer efficiency is 20%, the mapping value on the initial mapping relationship is 300m. 3 / min, meaning the first target blower parameter corresponding to a current oxygen transfer efficiency of 20% is 300m. 3 / min.

[0067] The above-mentioned aeration control method can quickly respond to changes in microorganisms and water quality in the water body. Based on the changes in the current oxygen transfer efficiency in the water body, the first target blowing parameters of blower 4 are adjusted according to the initial mapping relationship to ensure that an appropriate amount of oxygen enters the water body.

[0068] In some embodiments, after the blower 4 continuously delivers air to the aerobic tank 3 with the first target blowing parameter for a certain period of time (e.g., a second preset duration), the current oxygen transfer efficiency in the water body can be obtained again (e.g., step 320 is executed again), and a new first target blowing parameter is determined based on the newly obtained current oxygen transfer efficiency and the initial mapping relationship (e.g., step 330 is executed again). Then, the blower 4 is adjusted again to continuously deliver air to the aerobic tank 3 with the new first target blowing parameter. This cycle is repeated to ensure that the amount of oxygen delivered by the blower 4 to the water body is suitable for the oxygen demand of the water body.

[0069] In some embodiments, during the continuous aeration of the water body by the blower 4 based on the first target aeration parameters, the dissolved oxygen level of the water body can be monitored by the processor. A preset threshold for the dissolved oxygen level is input into the storage device. When the dissolved oxygen level in the water body is detected to be lower than the first preset threshold or higher than the second preset threshold, an alarm operation is executed. Dissolved oxygen refers to molecular oxygen dissolved in water. The dissolved oxygen level is a basis for studying the self-purification capacity of water bodies and can reflect the survival status of microorganisms in the water body to a certain extent. If the dissolved oxygen level in the water body is too low, it indicates that the water body is seriously polluted, has weak self-purification capacity, or even loses its self-purification capacity. Therefore, this embodiment presets a first preset threshold for dissolved oxygen. When the dissolved oxygen level in the water body is detected to be lower than the first preset threshold, it indicates that the self-purification capacity of the water body is too low. In some embodiments, during the operation of the aeration control equipment 100, the dissolved oxygen level in the water body can be monitored in real time by the alarm module 240, and a first preset threshold is input in advance into the alarm module 240. When the dissolved oxygen level in the water body is detected to be lower than the first preset threshold, the alarm module 240 executes an alarm operation so that the operator can intervene as soon as possible. In some embodiments, excessively high dissolved oxygen levels in the water indicate that the water body has a strong self-purification capacity and low dissolved oxygen demand. Therefore, this embodiment presets a second preset threshold for dissolved oxygen. When the dissolved oxygen level in the water body is detected to be higher than the second preset threshold, it indicates that the dissolved oxygen level in the water body is too high. In some embodiments, during the operation of the aeration control equipment 100, the dissolved oxygen level in the water body can be monitored in real time by the warning module 240, and a second preset threshold can be pre-input into the warning module 240. When the dissolved oxygen level in the water body is detected to be higher than the second preset threshold, the warning module 240 performs a warning operation. In some embodiments, the warning operation may include issuing a voice alarm, sending an electronic alarm message, automatically increasing the aeration rate of the blower 4, or automatically decreasing the aeration rate of the blower 4.

[0070] In some embodiments, when the warning module 240 detects in real time that the dissolved oxygen level in the water is lower than the first preset threshold or higher than the second preset threshold, the warning module 240 sends a remote control signal to the blower 4. Upon receiving the signal, the blower 4 increases the air volume to supply a larger amount of air to the water to ensure that the dissolved oxygen level remains above the first preset threshold. Alternatively, upon receiving the signal, the blower 4 decreases the air volume to supply a smaller amount of air to the water to ensure that the dissolved oxygen level remains below the second preset threshold. In this case, the aeration control equipment 100 can continue to operate.

[0071] In some embodiments, the alarm module 240 monitors the dissolved oxygen level in the water in real time, which can ensure on-site production safety. The aeration control equipment 100 can respond quickly to various emergencies on site, such as a sudden increase or decrease in water volume, oil pollution interference, changes in sludge concentration caused by sludge discharge, etc.

[0072] Figure 4 This is an exemplary flowchart of the method for determining the initial mapping relationship in the aeration control method shown in some embodiments of this specification.

[0073] In some embodiments, such as Figure 4 As shown, determining the initial mapping relationship between the blower parameters and the oxygen transfer efficiency (i.e., step 310) may include the following steps:

[0074] Step 311: Obtain multiple calibrated oxygen transfer efficiencies of the water body after continuous aeration for a first preset duration under multiple preset aeration parameters. In some embodiments, after the aeration control equipment 100 is installed, it needs to be debugged before operation. Multiple preset aeration parameters are input to the blower 4, causing the aeration control equipment 100 to aerate the water body, and the value of the calibrated oxygen transfer efficiency corresponding to each preset aeration parameter is recorded. In some embodiments, when the blower 4 is adjusted to a preset aeration parameter, the water body is continuously aerated under that preset aeration parameter for a first preset duration, and the value of the calibrated oxygen transfer efficiency corresponding to that preset aeration parameter is obtained. In some embodiments, the value of the calibrated oxygen transfer efficiency can be a representative value of the oxygen transfer efficiency within its aeration cycle. Here, the aeration cycle refers to the time period during which the blower 4 continuously aerates the water body for a first preset duration based on a preset aeration parameter. In some embodiments, the representative value of the oxygen transfer efficiency refers to a relatively reasonable value (e.g., average, median, etc.) that can represent a certain aeration cycle. In some embodiments, the representative value of oxygen transfer efficiency can be the median of multiple oxygen transfer efficiencies obtained within a certain aeration cycle. The median of the oxygen transfer efficiency values ​​within each control cycle is taken as the final calibrated oxygen transfer efficiency. In some embodiments, the calibrated oxygen transfer efficiency value can also be the oxygen transfer efficiency value at the end of its aeration cycle.

[0075] In some embodiments, the blower parameters may include blower airflow, blower frequency, or blower power, as well as other parameters controlling the operating state of the blower 4. The types of blower parameters can be set according to the specific model of the blower 4 on site. For example, the blower parameter may be the blower frequency, with an interval of ≥5Hz between two adjacent preset blower parameters. Another example is the blower power, with an interval of ≥10kW between two adjacent preset blower parameters. Yet another example is the blower airflow, with an interval of ≥10m³ / h between two adjacent preset blower parameters. 3 / min. In some embodiments, the interval between any two adjacent blower parameters may be equal. In some embodiments, the interval between any two adjacent blower parameters may be unequal (e.g., multiple preset blower parameters are randomly set).

[0076] In some embodiments, the number of preset aeration parameters can be set according to the specific model of the blower 4, the concentration of pollutants in the water, and the activity of microorganisms. The more preset aeration parameters there are, the more calibrations of oxygen transfer efficiency can be obtained, and the higher the accuracy of the curves, functions, or tables representing the initial mapping relationship can be fitted, resulting in more sufficient reference data during the formal operation of the aeration control equipment 100. In some embodiments, the number of preset aeration parameters is at least two. In some embodiments, the number of preset aeration parameters can be greater than ten.

[0077] In some embodiments, the first preset duration can be set according to the specific model of the blower 4, the concentration of pollutants in the water, the activity of microorganisms, etc. In some embodiments, the first preset duration can be 5 to 15 minutes. In some embodiments, the first preset duration can be 5 minutes, 8 minutes, 10 minutes, or 15 minutes. In some embodiments, the first preset duration can also be other durations that need to be manually set on site, such as 30 minutes, 60 minutes, 70 minutes, or 80 minutes.

[0078] In some embodiments, the calibrated oxygen transfer efficiency refers to the reference value of oxygen transfer efficiency in the water obtained through commissioning of the aeration control equipment 100 before formal operation. Through commissioning, a corresponding calibrated oxygen transfer efficiency is obtained for each preset aeration parameter.

[0079] Step 312: Determine the initial mapping relationship based on multiple preset aeration parameters and multiple calibrated oxygen transfer efficiencies. In some embodiments, during the commissioning of the aeration control equipment 100, the numerical value of the calibrated oxygen transfer efficiency corresponding to each preset aeration parameter is recorded. The initial mapping relationship between the aeration parameters and oxygen transfer efficiency can be represented using methods such as curve fitting, function fitting, or table creation. In some embodiments, such as... Figure 6As shown, the initial mapping relationship between the blower parameters and the oxygen transfer efficiency can be represented by a fitted curve, where the vertical axis represents the blower parameters and the horizontal axis represents the oxygen transfer efficiency. After determining the initial mapping relationship between the blower parameters and the oxygen transfer efficiency, it can be input into the processor's control module (e.g., mapping relationship determination module 210) or stored in a storage device for retrieval by the processor's control module.

[0080] It should be noted that the above description of process 300 is for illustrative purposes only and does not limit the scope of this specification. Those skilled in the art can make various modifications and changes to process 300 under the guidance of this specification. However, these modifications and changes remain within the scope of this specification.

[0081] Figure 5 This is yet another exemplary flowchart of an aeration control method shown in some embodiments of this specification.

[0082] In some embodiments, to continuously regulate the oxygen transfer efficiency in the water body, this specification also provides a process 400 for an aeration control method. See also... Figure 5 The aeration control method process 400 may also include the following steps:

[0083] Step 410: Determine the initial mapping relationship between the blower parameters and the oxygen transfer efficiency. In some embodiments, step 410 may be performed by a processor or a mapping relationship determination module 210.

[0084] Step 420: Obtain the current oxygen transfer efficiency in the water body. In some embodiments, step 420 may be performed by the oxygen transfer efficiency acquisition module 220.

[0085] Step 430: Determine the first target blowing parameters for blower 4 based on the current oxygen transfer efficiency and the initial mapping relationship. In some embodiments, step 430 can be performed by the blowing parameter determination module 230.

[0086] Steps 410-430 above are the same as steps 310-330 above, as detailed above, and will not be repeated here.

[0087] Step 440: Aerate the water body continuously for a second preset duration based on the first target aeration parameters.

[0088] In some embodiments, the second preset duration can be set according to the specific model of the on-site blower 4, the concentration of water pollutants, microbial activity, etc. In some embodiments, the second preset duration can be greater than or equal to 5 minutes. In some embodiments, the second preset duration can be 5 minutes, 8 minutes, 10 minutes, 15 minutes, 60 minutes, 80 minutes, or 100 minutes, etc. In some embodiments, the second preset duration can be equal to the first preset duration. For example, both the second preset duration and the first preset duration can be set to 10 minutes.

[0089] In some embodiments, the second preset duration can be manually adjusted according to the progress of wastewater treatment, for example, by adjusting the parameters of the second preset duration through a processor.

[0090] Step 450: Obtain the actual oxygen transfer efficiency of the water body after aeration. In some embodiments, step 450 can be performed by the oxygen transfer efficiency acquisition module 220.

[0091] In some embodiments, the actual oxygen transfer efficiency refers to the oxygen transfer efficiency at a certain point in time during the actual use of the aeration control equipment 100, or a representative value of the oxygen transfer efficiency within a certain aeration cycle. Here, the aeration cycle refers to the second preset duration of time during which the blower 4 continuously aerates the water body based on the first target aeration parameters. The method for determining the actual oxygen transfer efficiency is the same as the method for calibrating the oxygen transfer efficiency described above.

[0092] In some embodiments, the actual oxygen transfer efficiency and the oxygen transfer efficiency mapped by the first target blower parameter on the initial mapping relationship may be different. Therefore, steps 460-470 are required to update the initial mapping relationship to adapt to changes in the water body.

[0093] Step 460: Determine the second target blowing parameters for the blower 4 based on the actual oxygen transfer efficiency and the initial mapping relationship. In some embodiments, step 460 can be performed by the blowing parameter determination module 230.

[0094] In some embodiments, the second target aeration parameter refers to the mapped value of the actual oxygen transfer efficiency in the initial mapping relationship. The processor can input the acquired second target aeration parameter as a subsequent control parameter to the blower 4, causing the blower 4 to continuously aerate the water body with the second target aeration parameter for a second preset duration, thereby readjusting the oxygen transfer efficiency in the water body. For example, in step 450, the actual oxygen transfer efficiency in the water body after aeration is obtained as 18%; in step 460, based on the actual oxygen transfer efficiency of 18% and Figure 2 The initial mapping relationship shown determines that the second target blowing parameter of blower 4 is 330m. 3 / min. At this point, the second target blower parameter 330m will be obtained. 3 / min is used as the subsequent control parameter of blower 4 to control the second preset duration of continuous aeration of the water by blower 4, so as to obtain the actual oxygen transfer efficiency of the new round. This cycle is repeated, and the first target blowing parameter of blower 4 for the next round is always determined based on the newly obtained actual oxygen transfer efficiency and the initial mapping relationship (if the initial mapping relationship has been updated, then the updated initial mapping relationship is used).

[0095] Step 470: Update the initial mapping relationship based on the actual oxygen transfer efficiency. In some embodiments, step 470 can be performed by the mapping relationship determination module 210.

[0096] When the aeration control equipment 100 is in operation, the water quality (microbial state) in aerobic tank 3 will continuously change due to environmental influences, such as rainfall, temperature changes, air pressure changes, and aeration head status. The initial mapping relationship may not be suitable for the current water conditions. To address this issue, during the operation of the aeration control equipment 100, the initial mapping relationship is updated based on the actual oxygen transfer efficiency of the water in aerobic tank 3, ensuring that the mapping relationship between the aeration parameters and oxygen transfer efficiency in the aeration control equipment 100 better reflects the actual conditions of the water.

[0097] In some embodiments, updating the initial mapping relationship based on the actual oxygen transfer efficiency includes: updating the oxygen transfer efficiency mapping value of the first target blower parameter to the actual oxygen transfer efficiency. For example, in the above embodiment, step 440 is based on the first target blower parameter being 300m... 3 / min continuous aeration of the water body for a second preset duration (e.g., 10 minutes); Step 450, obtain the actual oxygen transfer efficiency in the water body after aeration as 18%; Step 460, based on the actual oxygen transfer efficiency of 18% and Figure 3 The initial mapping relationship shown determines the second target blower parameter 330m for blower 4. 3 / min; Step 470, set the first target blower parameter to 300m 3 The oxygen transfer efficiency mapped to / min is updated to the actual oxygen transfer efficiency of 18%, which can be understood as... Figure 6 The curve representing the mapping relationship is updated, and the updated mapping relationship is used as the initial mapping relationship for the next cycle, and so on. In some embodiments, step 460 is executed simultaneously with step 470. In other embodiments, steps 460 and 470 may be executed sequentially.

[0098] It should be noted that the above description of process 400 is for illustrative purposes only and does not limit the scope of this specification. Those skilled in the art can make various modifications and changes to process 400 under the guidance of this specification. However, these modifications and changes remain within the scope of this specification.

[0099] Figure 7 This is an exemplary flowchart of an aeration control method according to other embodiments of this specification.

[0100] like Figure 7 As shown, other embodiments of this specification provide an aeration control method, the process 500 of which may include the following steps. In some embodiments, process 500 may be executed by a processor of control cabinet 1.

[0101] Step 510: Determine the target mapping relationship between the blower parameters and the oxygen transfer efficiency. In some embodiments, step 510 can be performed by the mapping relationship determination module 210.

[0102] In some embodiments, the target mapping relationship refers to the steady-state correspondence between oxygen transfer efficiency and aeration parameters in the current water body.

[0103] In some embodiments, the mapping relationship determination module 210 may first obtain an initial mapping relationship between the blower parameters and the oxygen transfer efficiency, and then iteratively update the initial mapping relationship to determine the target mapping relationship.

[0104] The method for obtaining the initial mapping relationship can be found in the corresponding description above, and will not be repeated here.

[0105] In some embodiments, the target mapping relationship is obtained through iterative updates of the initial mapping relationship. Iterative updates are a process that approximates the desired steady-state correspondence through a feedback mechanism. In the iterative update, the initial mapping relationship obtained during the trial run is used as the first iteration, and the target mapping relationship obtained in each subsequent iteration is used as the initial mapping relationship for the next iteration. Specific methods for iterative updates are described below. Figure 8 The description section.

[0106] Step 520: Obtain the current oxygen transfer efficiency in the water body. In some embodiments, step 520 can be performed by the oxygen transfer efficiency acquisition module 220. The method for obtaining the current oxygen transfer efficiency is the same as the method for obtaining the actual oxygen transfer efficiency in step 450 above.

[0107] Step 530: Determine the target blowing parameters for blower 4 based on the current oxygen transfer efficiency and the target mapping relationship. In some embodiments, step 530 can be performed by the blowing parameter determination module 230.

[0108] The target aeration parameter refers to the corresponding value of the current oxygen transfer efficiency in the target mapping relationship. After determining the target aeration parameter of blower 4, the processor of control cabinet 1 can control blower 4 to continuously aerate the water body based on the target aeration parameter (for example, continuous aeration for a second preset duration) in order to maintain the oxygen transfer efficiency in the water body at the current oxygen transfer efficiency.

[0109] In some embodiments, the process 500 of the aeration control method may further include the detection and warning of dissolved oxygen levels in the water during the aeration process, as described in the relevant description in process 300 above.

[0110] It should be noted that the above description of process 500 is for illustrative purposes only and does not limit the scope of this specification. Those skilled in the art can make various modifications and changes to process 500 under the guidance of this specification. However, these modifications and changes remain within the scope of this specification.

[0111] Figure 8 This is an exemplary flowchart of an iterative update of the aeration control method shown in other embodiments of this specification.

[0112] In some embodiments, iterative update can refer to the process of repeatedly updating the mapping relationship through multiple rounds and finally determining the target mapping relationship. The iterative update process 600 may include the following steps:

[0113] Step 610: Obtain the first oxygen transfer efficiency in the water body during the current iteration.

[0114] In some embodiments, in each iteration of the mapping update, the mapping corresponding to the current iteration can be referred to as the current mapping. In some embodiments, the current mapping is the mapping to be updated in the current iteration. In some embodiments, in the first iteration, the current mapping can be the initial mapping. In subsequent iterations, the current mapping can be the updated mapping based on the previous iteration. The current iteration can be understood as the first iteration, or it can be understood as any iteration being used as the current iteration.

[0115] In some embodiments, the processor can obtain the first oxygen transfer efficiency in the water body in the current iteration. The first oxygen transfer efficiency can be the oxygen transfer efficiency in the current iteration when no aeration parameters are set, at which time the water body may not be in an aeration state, or the water body may be in an aeration state set in the previous iteration (i.e., aeration based on the aeration parameters set in the previous iteration).

[0116] Step 620: Determine the first blowing parameters of blower 4 based on the first oxygen transfer efficiency and the current mapping relationship of the current iteration round.

[0117] In some embodiments, in the current mapping relationship, the first oxygen transfer efficiency and the first blower parameter are mapping values ​​to each other, and the first blower parameter can be uniquely found from the current mapping relationship based on the first oxygen transfer efficiency.

[0118] Step 630: Obtain the second oxygen transfer efficiency of the water body after continuous aeration for a second preset time under the first blower parameters.

[0119] After determining the first aeration parameters, the processor of the control cabinet 1 can control the blower 4 to aerate the water body based on the first aeration parameters, and obtain the second oxygen transfer efficiency through the oxygen transfer efficiency acquisition module after the aeration continues for a second preset time.

[0120] Step 640: Determine the second blowing parameters of the blower 4 based on the second oxygen transfer efficiency and the current mapping relationship. The second oxygen transfer efficiency is the mapped value of the second blowing parameters in the current mapping relationship.

[0121] Step 650 involves re-determining the mapping value of the first blower parameter as the second oxygen transfer efficiency to update the current mapping relationship. Step 650 updates the current mapping relationship in the current iteration. The updated mapping relationship then becomes the current mapping relationship in step 620 of the next iteration.

[0122] Step 660: Obtain the third oxygen transfer efficiency of the water body after continuous aeration for a second preset time under the second blower parameters, and use the third oxygen transfer efficiency as the first oxygen transfer efficiency of the next iteration.

[0123] Steps 610 to 660 are repeated iteratively to obtain a near-stable correspondence to approximate the desired mapping relationship, thereby determining the target mapping relationship. In some embodiments, the iterative update may terminate based on reaching a preset number of iterations, and the current mapping relationship at the time of iteration termination is determined as the target mapping relationship. In some embodiments, the iterative update may also terminate based on the difference between the current mapping relationships in adjacent iterations being less than a preset threshold, and the current mapping relationship at the time of iteration termination is determined as the target mapping relationship.

[0124] In some embodiments, the oxygen capture dynamic DO aeration control method described in this specification can be executed locally, remotely, or in combination.

[0125] It should be noted that the above description of the aeration control equipment and its devices / modules is for convenience only and should not limit this application to the scope of the embodiments described. It is understood that those skilled in the art, after understanding the principle of the equipment, may arbitrarily combine the various devices / modules or construct sub-equipment connected to other devices / modules without departing from this principle. For example, in some embodiments, the mapping relationship determination module 210 and the blower parameter determination module 230 may be different modules in a processor (e.g., the processor of control cabinet 1), or a single module may implement the functions of two or more of the above-mentioned modules. For another example, each module may have its own storage module. Yet another example is that each module may share a single storage module. All such variations are within the scope of protection of this application.

[0126] The beneficial effects that the embodiments of this specification may bring include, but are not limited to: (1) Both aeration control methods proposed in this specification use the value of oxygen transfer efficiency for aeration control. This parameter can intuitively reflect the microorganisms and water quality in the aerobic tank, resulting in better aeration control and energy saving; (2) By determining the initial mapping relationship between the blower parameters and oxygen transfer efficiency during the commissioning phase, the blower parameters can be directly determined based on the actual oxygen transfer efficiency during formal operation to control and adjust the blower; (3) During formal operation, the blower parameters and their corresponding oxygen transfer efficiency can be recorded in real time to correct the mapping relationship between the blower parameters and oxygen transfer efficiency (including steps 470 and process 600 in this specification); (4) By monitoring the dissolved oxygen value in the water in real time through the warning module, on-site production safety can be ensured, and the aeration control equipment can respond quickly to various emergencies on-site.

[0127] It should be noted that different embodiments may produce different beneficial effects. In different embodiments, the beneficial effects may be any one or a combination of the above, or any other possible beneficial effects.

[0128] The basic concepts have been described above. Obviously, for those skilled in the art, the detailed disclosure above is merely illustrative and does not constitute a limitation of this specification. Although not explicitly stated herein, those skilled in the art may make various modifications, improvements, and corrections to this specification. Such modifications, improvements, and corrections are suggested in this specification and therefore remain within the spirit and scope of the exemplary embodiments described herein.

[0129] Furthermore, this specification uses specific terms to describe embodiments thereof. For example, "an embodiment," "one embodiment," and / or "some embodiments" refer to a particular feature, structure, or characteristic associated with at least one embodiment of this specification. Therefore, it should be emphasized and noted that references to "an embodiment," "one embodiment," or "an alternative embodiment" in different locations throughout this specification do not necessarily refer to the same embodiment. Moreover, certain features, structures, or characteristics in one or more embodiments of this specification can be appropriately combined.

[0130] Similarly, it should be noted that, in order to simplify the description disclosed herein and thus aid in the understanding of one or more embodiments of the invention, the foregoing description of embodiments in this specification may sometimes combine multiple features into a single embodiment, drawing, or description thereof. However, this method of disclosure does not imply that the subject matter of this specification requires more features than those mentioned in the claims. In fact, the embodiments contain fewer features than all the features of a single embodiment disclosed above.

[0131] In some embodiments, the numerical parameters used in the specification and claims are approximate values, which may be changed depending on the characteristics required by individual embodiments. In some embodiments, the numerical parameters should take into account specified significant digits and employ a general method of digit preservation. Although the numerical ranges and parameters used to confirm their breadth of range in some embodiments of this specification are approximate values, in specific embodiments, such values ​​are set as precisely as feasible.

[0132] Finally, it should be understood that the embodiments described in this specification are merely illustrative of the principles of the embodiments described herein. Other variations may also fall within the scope of this specification. Therefore, alternative configurations of the embodiments described herein are intended to be illustrative rather than limiting, and should be considered consistent with the teachings of this specification. Accordingly, the embodiments described herein are not limited to those explicitly introduced and described herein.

Claims

1. A method for controlling dynamic oxygen capture (DO) aeration, characterized in that: The aeration control method includes: Determine the target mapping relationship between aeration parameters and oxygen transfer efficiency. This target mapping relationship refers to the steady-state correspondence between the oxygen transfer efficiency and the aeration parameters in the current water body. Determining the target mapping relationship between aeration parameters and oxygen transfer efficiency includes: Obtain the initial mapping relationship between the blower parameters and the oxygen transfer efficiency; Based on the initial mapping relationship, an iterative update is performed to determine the target mapping relationship. The iterative update process approximates the steady-state correspondence between the oxygen transfer efficiency and the aeration parameters in the current water body through a feedback process. The iterative update includes: Obtain the first oxygen transfer efficiency in the water body during the current iteration round; The first blowing parameter of the blower is determined based on the first oxygen transfer efficiency and the current mapping relationship of the current iteration round, wherein the first oxygen transfer efficiency is the mapping value of the first blowing parameter in the current mapping relationship; The second oxygen transfer efficiency of the water body after continuous aeration for a second preset time under the first blower parameters is obtained; The second blowing parameter of the blower is determined based on the second oxygen transfer efficiency and the current mapping relationship, wherein the second oxygen transfer efficiency is the mapping value of the second blowing parameter in the current mapping relationship; The mapping value of the first blower parameter is redefined as the second oxygen transfer efficiency to update the current mapping relationship; and The third oxygen transfer efficiency of the water body after continuous aeration for a second preset time under the second blowing parameters is obtained, and the third oxygen transfer efficiency is used as the first oxygen transfer efficiency of the next iteration. The step of iteratively updating the initial mapping relationship to determine the target mapping relationship includes: The iterative update terminates when the number of iterations reaches a preset number, and the current mapping relationship at the time of iteration termination is determined as the target mapping relationship, or The iterative update terminates when the difference between the current mapping relationships in adjacent iterations is less than a preset threshold, and the current mapping relationship at the time of iteration termination is determined as the target mapping relationship; Obtain the current oxygen transfer efficiency in the water body; The target blowing parameters of the blower are determined based on the current oxygen transfer efficiency and the target mapping relationship.

2. The aeration control method as described in claim 1, characterized in that, The process of obtaining the initial mapping relationship between the blower parameters and the oxygen transfer efficiency includes: The oxygen transfer efficiency of the water body was obtained after continuous aeration for a first preset duration under multiple preset aeration parameters. The initial mapping relationship is determined based on the multiple preset blower parameters and the multiple calibrated oxygen transfer efficiencies.

3. The aeration control method as described in claim 1, characterized in that, The aeration control method further includes: Aeration is applied to the water body based on the target aeration parameters; Monitor the dissolved oxygen level of the water body during aeration; In response to the dissolved oxygen value being lower than a first preset threshold or higher than a second preset threshold, an alert operation is performed.

4. An oxygen capture dynamic DO aeration control device, characterized in that: The system includes a control cabinet, aeration piping, a blower, and an oxygen transfer efficiency analyzer; the control cabinet and / or the oxygen transfer efficiency analyzer includes one or more processors; the one or more processors include: The mapping relationship determination module is used to determine the initial mapping relationship and the target mapping relationship between the aeration parameters and the oxygen transfer efficiency. The initial mapping relationship is the mapping relationship between the aeration parameters and the oxygen transfer efficiency obtained through pre-operation debugging before formal use. The target mapping relationship refers to the steady-state correspondence between the oxygen transfer efficiency and the aeration parameters in the current water body. Determining the target mapping relationship between the aeration parameters and the oxygen transfer efficiency includes: Obtain the initial mapping relationship between the blower parameters and the oxygen transfer efficiency; Based on the initial mapping relationship, an iterative update is performed to determine the target mapping relationship. The iterative update process approximates the steady-state correspondence between the oxygen transfer efficiency and the aeration parameters in the current water body through a feedback process. The iterative update includes: Obtain the first oxygen transfer efficiency in the water body during the current iteration round; The first blowing parameter of the blower is determined based on the first oxygen transfer efficiency and the current mapping relationship of the current iteration round, wherein the first oxygen transfer efficiency is the mapping value of the first blowing parameter in the current mapping relationship; The second oxygen transfer efficiency of the water body after continuous aeration for a second preset time under the first blower parameters is obtained; The second blowing parameter of the blower is determined based on the second oxygen transfer efficiency and the current mapping relationship, wherein the second oxygen transfer efficiency is the mapping value of the second blowing parameter in the current mapping relationship; The mapping value of the first blower parameter is redefined as the second oxygen transfer efficiency to update the current mapping relationship; and The third oxygen transfer efficiency of the water body after continuous aeration for a second preset time under the second blowing parameters is obtained, and the third oxygen transfer efficiency is used as the first oxygen transfer efficiency of the next iteration. The step of iteratively updating the initial mapping relationship to determine the target mapping relationship includes: The iterative update terminates when the number of iterations reaches a preset number, and the current mapping relationship at the time of iteration termination is determined as the target mapping relationship, or The iterative update terminates when the difference between the current mapping relationships in adjacent iterations is less than a preset threshold, and the current mapping relationship at the time of iteration termination is determined as the target mapping relationship; The oxygen transfer efficiency acquisition module is used to acquire the current oxygen transfer efficiency in the water body; The blower parameter determination module is used to determine the target blower parameters based on the current oxygen transfer efficiency and the target mapping relationship.

5. The oxygen capture dynamic DO aeration control equipment as described in claim 4, characterized in that, Also includes: The warning module is used to monitor the dissolved oxygen level of the water during aeration and to perform a warning operation when the dissolved oxygen level is lower than a first preset threshold or higher than a second preset threshold.

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