CN116495903A

CN116495903A - Oxygen capturing dynamic DO aeration control method and equipment

Info

Publication number: CN116495903A
Application number: CN202310070428.2A
Authority: CN
Inventors: 左凌
Original assignee: Huanxun Technology Suzhou Co ltd
Current assignee: Huanxun Technology Suzhou Co ltd
Priority date: 2023-01-19
Filing date: 2023-01-19
Publication date: 2023-07-28

Abstract

Embodiments of the present description provide an oxygen capture dynamic DO aeration control method and apparatus. The oxygen capturing dynamic DO aeration control method comprises the following steps: determining an initial mapping relation between the blast parameters and the oxygen transfer efficiency; acquiring the current oxygen transfer efficiency in the water body; a first target blower parameter of the blower is determined based on the current oxygen transfer efficiency and the initial mapping relationship. The oxygen capture dynamic DO aeration control apparatus includes: a control cabinet, an aeration pipeline, a blower and an oxygen transfer efficiency analyzer; the control cabinet and/or the oxygen transfer efficiency analyzer include one or more processors; the one or more processors include: the system comprises a mapping relation determining module, an oxygen transfer efficiency obtaining module and a blast parameter determining module, wherein the mapping relation determining module, the oxygen transfer efficiency obtaining module and the blast parameter determining module are used for executing the oxygen capturing dynamic DO aeration control method.

Description

Oxygen capturing dynamic DO aeration control method and equipment

Technical Field

The specification relates to the field of sewage treatment, in particular to an oxygen capture dynamic DO aeration control method and equipment.

Background

The energy consumption of the sewage treatment plant in China is mainly power consumption, the power consumption of the municipal sewage treatment plant for treating each ton of sewage is about 0.3 DEG, the power consumption of the industrial sewage treatment plant for treating each ton of sewage is more than 1 DEG, and the power cost accounts for about 50% -70% of the total cost of sewage treatment.

Aiming at aeration control of an aerobic tank of a sewage treatment plant, the mainstream technology in the market at present is a control strategy depending on dissolved oxygen. The method needs to set a target DO (dissolved oxygen) value, adjusts the air quantity of an air blower according to the actual DO value in the aerobic tank, and maintains the actual DO value in the aerobic tank consistent with the set target value. Compared with the traditional manual rough type air blower regulation and control, the technical principle of the automatic control device is mainly to adopt a control method of fixed DO value although a certain effect is achieved; meanwhile, the method is excessively dependent on meters, the maintenance amount is large when the method is applied in a corrosive environment, the stability of control equipment is poor, a single DO value cannot accurately reflect the activity state and the water quality condition of microorganisms in mixed liquid, and the function is limited to aeration control. Therefore, there is a need for an aeration control method and apparatus that can more accurately reflect the activity status of microorganisms in a body of water as well as the water quality.

Disclosure of Invention

One of the embodiments of the present disclosure provides a method for oxygen capture dynamic DO aeration control. The aeration control method comprises the following steps: determining an initial mapping relation between the blast parameters and the oxygen transfer efficiency; acquiring the current oxygen transfer efficiency in the water body; a first target blower parameter of a blower is determined based on the current oxygen transfer efficiency and the initial mapping relationship.

In some embodiments, the determining the initial mapping of the blast parameter to the oxygen transfer efficiency includes: obtaining a plurality of calibrated oxygen transfer efficiencies of the water body after continuously aerating for a first preset duration under a plurality of preset blasting parameters; and determining the initial mapping relation based on the plurality of preset blasting parameters and the plurality of calibrated oxygen transfer efficiencies.

In some embodiments, the aeration control method further comprises: continuously aerating the water body for a second preset duration based on the first target blasting parameter; acquiring the actual oxygen transfer efficiency of the water body after aeration; a second target blower parameter of the blower is determined based on the actual oxygen transfer efficiency and the initial mapping relationship.

In some embodiments, the aeration control method further comprises: the initial mapping relation is updated based on the actual oxygen transfer efficiency.

In some embodiments, updating the initial mapping based on the actual oxygen transfer efficiency includes: and updating the oxygen transfer efficiency mapping value of the first target blasting parameter to the actual oxygen transfer efficiency.

In some embodiments, the aeration control method further comprises: aerating the body of water based on the first target blowing parameter; monitoring the dissolved oxygen value of the water body in the aeration process; and executing warning operation in response to the dissolved oxygen value being lower than a first preset threshold or higher than a second preset threshold.

One of the embodiments of the present specification provides an oxygen capture dynamic DO aeration control apparatus. The aeration control apparatus includes: a control cabinet, an 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: the mapping relation determining module is used for determining an initial mapping relation between the blasting parameter and the oxygen transfer efficiency; the oxygen transfer efficiency acquisition module is used for acquiring the current oxygen transfer efficiency in the water body; and the blast parameter determining module is used for determining a first target blast parameter of the blast fan based on the current oxygen transfer efficiency and the initial mapping relation.

One of the embodiments of the present disclosure provides another oxygen capture dynamic DO aeration control method. The aeration control method comprises the following steps: determining a target mapping relation between the blast parameters and the oxygen transfer efficiency; acquiring the current oxygen transfer efficiency in the water body; and determining a target blowing parameter of a blower based on the current oxygen transfer efficiency and the target mapping relation.

In some embodiments, the determining the target mapping relationship of the blast parameter and the oxygen transfer efficiency includes: acquiring an initial mapping relation between a blowing parameter and oxygen transfer efficiency; and based on the initial mapping relation, carrying out iterative updating to determine the target mapping relation.

In some embodiments, the obtaining the initial mapping relationship between the blast parameter and the oxygen transfer efficiency includes: obtaining a plurality of calibrated oxygen transfer efficiencies of the water body after continuously aerating for a first preset duration under a plurality of preset blasting parameters; and determining the initial mapping relation based on the plurality of preset blasting parameters and the plurality of calibrated oxygen transfer efficiencies.

In some embodiments, the iterative updating includes: acquiring a first oxygen transfer efficiency in the water body in the current iteration round; determining a first air blast parameter of the air blower based on the first oxygen transfer efficiency and a current mapping relation of a current iteration round, wherein the first oxygen transfer efficiency is a mapping value of the first air blast parameter in the current mapping relation; acquiring a second oxygen transfer efficiency of the water body after continuously aerating for a second preset time under the first blasting parameter; determining a second air blast parameter of the air blast machine based on the second oxygen transfer efficiency and the current mapping relation, wherein the second oxygen transfer efficiency is a mapping value of the second air blast parameter in the current mapping relation; re-determining the mapping value of the first blast parameter as the second oxygen transfer efficiency to update the current mapping relationship; and obtaining third oxygen transfer efficiency of the water body after continuously aerating for a second preset time under the second blasting parameter, and taking the third oxygen transfer efficiency as the first oxygen transfer efficiency of the next iteration round.

In some embodiments, the aeration control method further comprises: aerating the body of water based on the target blast parameter; monitoring the dissolved oxygen value of the water body in the aeration process; and executing warning operation in response to the dissolved oxygen value being lower than a first preset threshold or higher than a second preset threshold.

One of the embodiments of the present disclosure provides another oxygen capture dynamic DO aeration control apparatus. The aeration control apparatus includes: a control cabinet, an 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: the mapping relation determining module is used for determining an initial mapping relation and/or a target mapping relation of the blast parameter and the oxygen transfer efficiency; the oxygen transfer efficiency acquisition module is used for acquiring the current oxygen transfer efficiency in the water body; and the air blast parameter determining module is used for determining target air blast parameters of the air blast machine based on the current oxygen transfer efficiency and the target mapping relation.

Drawings

The present specification will be further elucidated by way of example embodiments, which will be described in detail by means of the accompanying drawings. The embodiments are not limiting, in which like numerals represent like structures, wherein:

Fig. 1 is a schematic view of an aeration control apparatus according to some embodiments of the present description;

fig. 2 is a block diagram of a processor of aeration control equipment shown in accordance with some embodiments of the present description;

fig. 3 is an exemplary flow chart of an aeration control method according to some embodiments of the present disclosure;

fig. 4 is an exemplary flowchart of an initial mapping relation determination method in the aeration control method according to some embodiments of the present description;

fig. 5 is yet another exemplary flow chart of an aeration control method according to some embodiments of the present disclosure;

fig. 6 is a schematic view of an initial mapping relationship (fitted curve) in the aeration control method according to some embodiments of the present description;

fig. 7 is an exemplary flow chart of an aeration control method according to other embodiments of the present disclosure;

FIG. 8 is an exemplary flowchart of a target map iterative update method of an aeration control method according to other embodiments of the present disclosure;

in the figure: 100. aeration control equipment; 1. a control cabinet; 2. an aeration pipeline; 3. an aerobic tank; 4. a blower; 5. oxygen transfer efficiency analyzer.

Detailed Description

In order to more clearly illustrate the technical solutions of the embodiments of the present specification, the drawings that are required to be used in the description of the embodiments will be briefly described below. It is apparent that the drawings in the following description are only some examples or embodiments of the present specification, and it is possible for those of ordinary skill in the art to apply the present specification to other similar situations according to the drawings without inventive effort. Unless otherwise apparent from the context of the language or otherwise specified, like reference numerals in the figures refer to like structures or operations.

It will be appreciated that "equipment," "unit," and/or "module" as used herein is one method for distinguishing between different components, elements, parts, portions, or assemblies at different levels. However, if other words can achieve the same purpose, the words can be replaced by other expressions.

As used in this specification and the claims, the terms "a," "an," "the," and/or "the" are not specific to a singular, but may include a plurality, unless the context clearly dictates otherwise. In general, the terms "comprises" and "comprising" merely indicate that the steps and elements are explicitly identified, and they do not constitute an exclusive list, as other steps or elements may be included in a method or apparatus.

A flowchart is used in this specification to describe the operations performed by the apparatus according to the embodiments of the present specification. It should be appreciated that the preceding or following operations are not necessarily performed in order precisely. Rather, the steps may be processed in reverse order or simultaneously. Also, other operations may be added to or removed from these processes.

The value for measuring the oxygen transfer efficiency is significant for evaluating the on-site aeration efficiency of sewage, and under the condition that the effluent reaches the standard, the aeration efficiency of the aeration control equipment with good running state can be more than 25 percent, and the aeration efficiency of the aeration control equipment with poor running state can be less than 15 percent. The main current aeration control method in the market mainly adopts to control the dissolved oxygen value in the water body to be a constant value. The dissolved oxygen value refers to the residual dissolved oxygen in the aerobic tank 3, only part of oxygen entering the aerobic tank 3 is consumed by microorganisms, and the residual oxygen is converted into the residual dissolved oxygen and becomes tail gas to escape. The simple focus on the dissolved oxygen value is far from enough to comprehensively master the aeration control equipment efficiency, the change of the concentration of water pollutants, the microbial activity and the water toxicity. For example, when all the microorganisms in the aerobic tank 3 die, no microorganisms consume oxygen, and the value of the residual dissolved oxygen is high, so that the conventional "control the residual dissolved oxygen in the aerobic tank to a constant value" is poor and there is a safety risk. Therefore, the specification provides an oxygen capture dynamic DO aeration control method and equipment which can more accurately reflect the activity state of microorganisms in water and the water quality condition. The specification provides a principle based on which an oxygen capturing dynamic DO aeration control method is as follows: if the concentration of pollutants in the water body is increased, the oxygen mass transfer resistance in the water body is increased, so that oxygen cannot be fully absorbed by the water body, the oxygen transfer efficiency is reduced, the oxygen absorption capacity of the water body is reduced, and the blower needs to operate with large air quantity to ensure that enough oxygen enters the water body; if the concentration of pollutants is reduced, the oxygen mass transfer resistance in the water body is reduced, oxygen is more easily absorbed by the water body, the oxygen transfer efficiency is increased, the oxygen absorption capacity of the water body is increased, the blower does not need to operate with large air quantity at the moment, and enough oxygen can be ensured to enter the water body by operating with low air quantity.

According to the oxygen capture dynamic DO aeration control method provided by some embodiments of the specification, the association relation between the blast parameters of the blower and the oxygen transfer efficiency in the water body is established, and the aeration amount in the water body is controlled by the association relation. Specifically, the method can firstly determine the mapping relation between the blast parameters and the oxygen transfer efficiency, then acquire the current oxygen transfer efficiency in the water body, then determine the blast parameters when the water body is aerated based on the current oxygen transfer efficiency and the mapping relation, and control the aeration of the blast blower. In some embodiments, the mapping of the blast parameter to the oxygen transfer efficiency may include an initial mapping. In some embodiments, the mapping of the blast parameters to the oxygen transfer efficiency may also include a target mapping. In some embodiments, the mapping of the blast parameter to the oxygen transfer efficiency may also include a current mapping. For a more detailed description of the initial, target and current mappings and their applications, see the description elsewhere in this specification.

Fig. 1 is a schematic view of an aeration control apparatus according to some embodiments of the present specification.

As shown in fig. 1, the aeration control equipment 100 may include a control cabinet 1, an aeration line 2, an aerobic tank 3, a blower 4, and an oxygen transfer efficiency analyzer 5. Wherein, oxygen transfer efficiency analysis appearance 5 is connected with the switch board 1 electrical signal, and switch board 1 is connected with air-blower 4 electrical signal. An oxygen transfer efficiency analyzer 5 is arranged in the aerobic tank 3. The aeration mode of the aerobic tank 3 can be bottom aeration, and is connected with a blower 4 through an aeration pipeline 2, and the oxygen transfer efficiency in the aerobic tank 3 is detected through an oxygen transfer efficiency analyzer 5 to control the blowing parameters of the blower 4. In some embodiments, the aeration control apparatus 100 may be applied to industrial fields and municipal fields where sewage treatment is required.

In some embodiments, the various components of aeration control equipment 100 may be interconnected by data connection lines or networks. For example, the oxygen transfer efficiency analyzer 5 and the control cabinet 1 may be connected or communicated through a network.

The network may include any suitable network capable of facilitating the exchange of information and/or data of the aeration control equipment 100. In some embodiments, at least one component of aeration control equipment 100 (e.g., control cabinet 1, aeration line 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 aeration control equipment 100 via a network. For example, the control cabinet 1 may acquire the oxygen transfer efficiency detected by the oxygen transfer efficiency analyzer 5 from the oxygen transfer efficiency analyzer 5 through a 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 apparatus 100 may connect to the network to exchange data and/or information.

The control cabinet 1 may be used to control other devices in the aeration control apparatus 100. For example, the control cabinet 1 may control the blower 4. For another example, the control cabinet 1 may control the oxygen transfer efficiency analyzer 5. The control cabinet 1 may comprise at least one processor. In some embodiments, the processor may process data and/or information obtained from the blower 4 or the oxygen transfer efficiency analyzer 5. In some embodiments, the processor may process instructions obtained from the network to control other devices (e.g., blower 4) in aeration control equipment 100. In some embodiments, the processor may obtain the current oxygen transfer efficiency from the oxygen transfer efficiency analyzer 5 for further calculation of the blower parameters that determine the next time of the blower 4. For another example, the processor may obtain an initial mapping of the aeration control apparatus 100 from the storage device for use as an initial reference when the aeration control apparatus 100 is formally operating. In some embodiments, the processor may be a single server or a group of servers. The server farm may be centralized or distributed. In some embodiments, the processor may be local or remote.

In some embodiments, the control cabinet 1 may also 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 that the control cabinet 1 uses to perform or use to accomplish the exemplary methods described in this specification. In some embodiments, the storage device may store an initial mapping of the blast parameters to oxygen transfer efficiency. In some embodiments, the storage device may include mass memory, removable memory, volatile read-write memory, read-only memory (ROM), and the like, or any combination thereof. In some embodiments, the storage device may be implemented on a cloud platform.

In some embodiments, the control cabinet 1 may also include an input device. In some embodiments, the input device may be provided on the control cabinet 1. In some embodiments, the input device may also be external, e.g., the input device may be in communication and/or connection with the control cabinet 1, blower 4, and oxygen transfer efficiency analyzer 5. In some embodiments, the input device may include a mobile device, a tablet computer, a laptop computer, or the like, or any combination thereof. For example, the mobile device may include a mobile control handle, a Personal Digital Assistant (PDA), a smart phone, or the like, or any combination thereof. The input device may be selected from keyboard input, touch screen (e.g., with haptic or tactile feedback) input, voice input, eye-tracking input, gesture-tracking input, image input, video input, or any other similar input mechanism. The input information received via the input device may be transmitted via, for example, a bus to the control cabinet 1 for further processing. Other types of input devices may include cursor control devices, such as a mouse, a trackball, or cursor direction keys. In some embodiments, the user may input a remote control signal through an input device. In some embodiments, the user may input a remote control signal (e.g., a blowing parameter) through an input device.

In some embodiments, the control cabinet 1 may also include an output device. The output device may include a display, speakers, printer, etc., or any combination thereof. The output device may be used to output parameters or the like related to the aeration control apparatus 100. For example, the display may be used to display related information or images during the water body sewage treatment in the aerobic tank 3, such as the current air-blowing parameter of the air blower 4, the current oxygen transfer efficiency detected by the oxygen transfer efficiency analyzer 5, or an image for representing the mapping relationship of the air-blowing parameter and the oxygen transfer efficiency, etc.

It should be noted that the above description is provided for illustrative purposes only and is not intended to limit the scope of the present description. Many variations and modifications will be apparent to those of ordinary skill in the art, given the benefit of this disclosure. The features, structures, methods, and other features of the exemplary embodiments described herein may be combined in various ways to obtain additional 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, a private cloud, a community, a hybrid cloud, and the like. However, such changes and modifications do not depart from the scope of the present specification.

The aeration pipeline 2 is used for connecting the air blower 4 and the aerobic tank 3 and has the functions of aeration and oxygenation. One end of the aeration pipeline 2 is connected with an air outlet of the air blower 4, the other end of the aeration pipeline 2 is connected with an aeration device arranged at the bottom of the aerobic tank 3, the aeration pipeline 2 utilizes the air blower 4 to convey air into the aeration device arranged at the bottom of the aerobic tank 3, the air is dispersed and escaped in a bubble form, and oxygen in the air is dissolved into water at a gas-liquid interface. In some embodiments, the aeration pipeline 2 can be connected with a plurality of aeration heads of the aeration device, and the distribution and the number of the aeration heads can be set according to the oxygen demand of the aerobic tank 3 and the microbiota in the water body.

The aerobic tank 3 is a water tank which maintains parameters in the water body through measures such as aeration and the like and is suitable for growth and propagation of aerobic microorganisms so as to treat pollutants in the water body. In some embodiments, different oxygen environments in the aerobic tank 3 adapt to different microorganism groups, and microorganisms can change behaviors when the environments change, so that the aim of removing different pollutants is fulfilled.

The blower 4 is used for supplying oxygen to the aerobic tank 3 and aerating, so that oxygen can be added to the microbiota in the aerobic tank 3.

In some embodiments, the blower 4 may be a variable frequency blower. In some embodiments, blower 4 may 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 type of blower with a frequency converter, or the like. The specific model of the blower 4 is selected, and the air quantity and pressure can be calculated according to the air-water ratio, the water depth, the pipeline load and the like, and then the type of the blower, the specific model and the motor power are determined.

The oxygen transfer efficiency analyzer 5 is floatingly installed on the liquid surface of the aerobic tank 3, and can collect the value of the oxygen transfer efficiency in the aerobic tank 3 in real time. The bottom of the oxygen transfer efficiency analyzer 5 is a gas collecting hood, which can collect the tail gas escaping from the surface of the aerobic tank 3, and then calculate the value of the oxygen transfer efficiency according to the flow, pressure, water temperature and dissolved oxygen value in water in the aerobic tank 3 and the depth of the water tank in the aerobic tank 3. If the concentration of pollutants in the aerobic tank 3 is increased, the oxygen mass transfer resistance in the water body is increased, so that oxygen cannot be fully absorbed by the water body, the oxygen transfer efficiency is reduced, which means that the oxygen absorption capacity of the water body is reduced, and the blower 4 needs to operate with increased air quantity to ensure that enough air enters the water body in the aerobic tank 3; if the concentration of pollutants in the aerobic tank 3 is reduced, the oxygen mass transfer resistance in the water body is reduced, oxygen is easier to be absorbed by the water body, the oxygen transfer efficiency is increased, the oxygen absorbing capacity of the water body is increased, the blower 4 does not need to operate with large air quantity, the operation with low air quantity can ensure that enough oxygen enters the water body, and the air quantity operation of the blower 4 can be regulated down.

The oxygen transfer efficiency (Oxygen Transfer Efficiency, OTE for short) refers to the percentage of the total oxygen supply amount in the water body transferred to the aerobic tank 3, and is one of important parameters for examining the aeration efficiency. The influence factors of the oxygen transfer efficiency value are very many, including the blasting parameter of the blast blower 4, the water pool depth of the aerobic pool 3, the water body temperature in the aerobic pool 3, the distribution of aeration heads, the number of the aeration heads and the state of the aeration heads of the aeration pipeline 2, the activity state of microorganisms in the water body of the aerobic pool 3, the type of water quality pollutants and the like.

The control cabinet 1, the aeration line 2, the aerobic tank 3, the blower 4, and the oxygen transfer efficiency analyzer 5 described in the present specification are all devices known to those skilled in the art in terms of hardware, and the sources thereof are not particularly limited in the present application.

It should be noted that the foregoing description is provided for illustrative purposes only and is not intended to limit the scope of the present application. Many variations and modifications will be apparent to those of ordinary skill in the art, given the benefit of this disclosure. The features, structures, methods, and other features of the exemplary embodiments described herein may be combined in various ways to obtain additional and/or alternative exemplary embodiments.

Fig. 2 is a block diagram of a processor of aeration control equipment shown in accordance with some embodiments of the present description.

In some embodiments, the control cabinet 1 and/or the oxygen transfer efficiency analyzer 5 may include one or more processors. As shown in fig. 2, the one or more processors 200 include: a mapping relation determination module 210, an oxygen transfer efficiency acquisition module 220, and a blast parameter determination module 230 may be included. In some embodiments, the mapping relationship determination module 210, the oxygen transfer efficiency acquisition module 220, and the blast parameter determination module 230 may be implemented by a processor (e.g., a processor in the control cabinet 1 and/or the oxygen transfer efficiency analyzer 5). In other embodiments, the mapping relation determining module 210 and the blast parameter determining module 230 may also be disposed on the processor of the control cabinet 1, and the oxygen transfer efficiency obtaining module 220 may be disposed on the processor of the oxygen transfer efficiency analyzer 5.

In some embodiments, the mapping determination module 210 may be used to determine an initial mapping of the blast parameters to oxygen transfer efficiency. In some embodiments, the map determination module 210 may also be configured to update the initial map based on the actual oxygen transfer efficiency. In other embodiments, the mapping determination module 210 may also be configured to determine a target mapping of the blast parameters to oxygen transfer efficiency. In other embodiments, the mapping determination module 210 may also be configured to update the iteration of the target mapping of the blast parameter to the oxygen transfer efficiency.

In some embodiments, the oxygen transfer efficiency acquisition module 220 may be used to acquire a current oxygen transfer efficiency in a body of water. In some embodiments, the oxygen transfer efficiency acquisition module 220 may be used to acquire data acquired by the oxygen transfer efficiency analyzer 5.

In some embodiments, the blower parameter determination module 230 may be configured to determine a first target blower parameter of the blower 4 based on the current oxygen transfer efficiency and the initial mapping relationship. In other embodiments, the blower parameter determination module 230 may be configured to determine a target blower parameter of the blower 4 based on the current oxygen transfer efficiency and the target shot relationship.

In some embodiments, the processor 200 may also include an alert module 240. The warning module 240 may be configured to monitor a dissolved oxygen value of the body of water during aeration and to perform a warning operation in response to when the dissolved oxygen value is below a first preset threshold or above a second preset threshold.

Fig. 3 is an exemplary flow chart of an aeration control method according to some embodiments of the present description.

As shown in FIG. 3, some embodiments of the present description provide an oxygen capture dynamic DO aeration control method, the flow 300 of which may include the following steps. In some embodiments, the process 300 may be performed by a processor (e.g., the processor of the control cabinet 1). For example, the process 300 may be implemented as a set of instructions (e.g., an application) stored in a memory external to, for example, the storage device of the control cabinet 1, the aeration control equipment 100, and accessible by the aeration control equipment 100. The processor may execute the set of instructions and, when executing the instructions, may configure it to perform the process 300. The operational schematic of the flow 300 presented below is illustrative. In some embodiments, the process may be accomplished with one or more additional operations not described above and/or one or more operations not discussed. In addition, the order in which the operations of flow 300 are illustrated in FIG. 3 and described below is not intended to be limiting.

Step 310, determining an initial mapping relationship of the blast parameters and the oxygen transfer efficiency. In some embodiments, step 310 may be performed by the mapping determination module 210.

The initial mapping relationship between the air blast parameter and the oxygen transfer efficiency refers to the mapping relationship between the air blast parameter and the oxygen transfer efficiency obtained by pre-operation debugging of the aeration control equipment 100 before the regular use. In some embodiments, the initial mapping of the blast parameters to oxygen transfer efficiency may be determined according to the flow chart of FIG. 4 below. The mapping relationship may be a one-to-one mapping relationship (i.e., a one-to-one correspondence relationship between the values of the air blowing parameter and the oxygen transfer efficiency), and the mapping relationship may be represented in the form of a curve, a function, a table, or the like. In some embodiments, the initial mapping relationship between the air blast parameter and the oxygen transfer efficiency may be represented by a fitted curve, as shown in fig. 6, where the air blast parameter is taken as the ordinate, the oxygen transfer efficiency is taken as the abscissa, and the curve represents the initial mapping relationship, and each point on the curve is a set of air blast parameters and oxygen transfer efficiency that are mapped to each other. In some embodiments, the initial mapping of the blowing parameters to oxygen transfer efficiency may be represented using a fitted function by which a one-to-one mapping between the two sets (blowing parameters to oxygen transfer efficiency) is represented. In some embodiments, the initial mapping relationship between the air blast parameter and the oxygen transfer efficiency may be represented by making a table, for example, the first column in the table is the air blast parameter, the second column is the oxygen transfer efficiency, and the air blast parameter and the oxygen transfer efficiency located on the same row are the mapping values of each other.

Step 320, obtaining a current oxygen transfer efficiency in the body of water. In some embodiments, step 320 may be performed by the oxygen transfer efficiency acquisition module 220.

The water body can be a water body which is not aerated yet (namely, a water body before sewage treatment starts), can be a water body at any time in the test running process, and can be a water body at any time in the formal running process.

In some embodiments, the current oxygen transfer efficiency may be the oxygen transfer efficiency of the aeration control apparatus 100 at the beginning of the formal operation. In some embodiments, the current oxygen transfer efficiency may also be an oxygen transfer efficiency of the aeration control equipment 100 at a point in time during the regular operation, and may be a value of the oxygen transfer efficiency actually collected by the oxygen transfer efficiency analyzer 5. In some embodiments, the current oxygen transfer efficiency may also be a representative value of the oxygen transfer efficiency of the aeration control apparatus 100 during some preset time period (e.g., a second preset time period) during the actual operation, wherein the representative value is calculated as follows. In some embodiments, the current oxygen transfer efficiency may also be a particular value in the oxygen transfer efficiency of the continuously acquired body of water. For example, when the oxygen transfer efficiency is greatly changed, aeration of the water body may be continued, and the representative value may be obtained after the oxygen transfer efficiency is relatively stable. For another example, the oxygen transfer efficiency analyzer 5 may continuously monitor the oxygen transfer efficiency of the water body after the aeration of the water body is completed, and when the oxygen transfer efficiency in the water body changes beyond a preset monitoring range, the oxygen transfer efficiency at this time is taken as the current oxygen transfer efficiency.

Step 330, determining a first target blowing parameter of the blower 4 based on the current oxygen transfer efficiency and the initial mapping relationship. In some embodiments, step 330 may be performed by the blowing parameter determination module 230.

The first target blast parameter refers to a map value of the current oxygen transfer efficiency on the initial map. After the first target blasting parameters are determined by the blasting parameter determination module 230, the blasting parameters of the blower 4 are adjusted to the first target blasting parameters so that the blower 4 aerates the aerobic tank 3 with the first target blasting parameters.

In some embodiments, when the expression of the initial mapping relationship between the blast parameter and the oxygen transfer efficiency is a fitted curve, the first target blast parameter may be obtained by a point-taking method on the fitted curve; in some embodiments, when the initial mapping of the blowing parameters to oxygen transfer efficiency is expressedWhen the form is a fitting function, the first target blasting parameter can be obtained by a method of calculating the fitting function; in some embodiments, when the expression of the initial mapping relationship between the air blast parameter and the oxygen transfer efficiency is a table, the first target air blast parameter may be obtained by using a table look-up method. In some embodiments, the first target blowing parameter may be obtained by removing points on a fitted curve, for example, in FIG. 6, the initial mapping relationship between the blowing parameter and the oxygen transfer efficiency is represented by a fitted curve, and when the oxygen transfer efficiency is 20%, the mapping value on the initial mapping relationship is 300m ³ Per min, i.e. the current oxygen transfer efficiency is 20% and the corresponding first target blast parameter is 300m ³ /min。

The aeration control method can quickly respond to the change of the state of microorganisms and water quality in the water body, and the first target blasting parameters of the blast fan 4 are adjusted based on the initial mapping relation according to the change of the current oxygen transfer efficiency in the water body, so that the proper amount of oxygen is ensured to enter the water body.

In some embodiments, after the blower 4 continuously conveys air to the aerobic tank 3 for a certain time (for example, a second preset time period) with the first target blasting parameter, the current oxygen transfer efficiency in the water body can be obtained again (for example, step 320 is performed again), a new first target blasting parameter is determined based on the newly obtained current oxygen transfer efficiency and the initial mapping relation (for example, step 330 is performed again), and the blower 4 is adjusted again to continuously convey air to the aerobic tank 3 with the new first target blasting parameter, so that circulation is achieved, and the oxygen conveying amount of the blower 4 to the water body is suitable for the oxygen demand amount of the water body.

In some embodiments, the blower 4 may monitor the dissolved oxygen value of the water body during aeration by the processor during continuous aeration of the water body based on the first target blowing parameter. And inputting a preset threshold value of the dissolved oxygen value into the storage equipment, and executing warning operation when the dissolved oxygen value in the water body is detected to be lower than a first preset threshold value or higher than a second preset threshold value. The dissolved oxygen value refers to molecular oxygen dissolved in water. The dissolved oxygen value is a basis for researching the self-cleaning capability of the water body, and can reflect the survival condition of microorganisms in the water body to a certain extent. The dissolved oxygen in the water body is too low, which means that the water body is seriously polluted, the self-cleaning capability is weak, and even the self-cleaning capability is lost, so that the first preset threshold value of the dissolved oxygen is preset in the embodiment, and when the value of the dissolved oxygen in the water body is detected to be lower than the first preset threshold value, the self-cleaning capability in the water body is too low. In some embodiments, during operation of the aeration control apparatus 100, the value of the dissolved oxygen in the water body may be monitored in real time by the warning module 240, and a first preset threshold value is input into the warning module 240 in advance, and when the value of the dissolved oxygen in the water body is detected to be lower than the first preset threshold value, the warning module 240 performs a warning operation so that an operator can intervene as soon as possible. In some embodiments, the dissolved oxygen in the water body is too high, which indicates that the current self-cleaning capability of the water body is strong, and the dissolved oxygen demand is small, so that the second preset threshold value of the dissolved oxygen is preset in the embodiment, and when the value of the dissolved oxygen in the water body is detected to be higher than the second preset threshold value, the condition that the dissolved oxygen in the water body is too high is indicated. In some embodiments, during operation of the aeration control apparatus 100, the value of the dissolved oxygen in the water body may be monitored in real time by the warning module 240, and a second preset threshold value is input into the warning module 240 in advance, and when the value of the dissolved oxygen in the water body is detected to be higher than the second preset threshold value, the warning module 240 performs a warning operation. In some embodiments, the alert operation may include sounding an alarm, sending an alarm electronic message, automatically increasing the aeration level of blower 4, automatically decreasing the aeration level of blower 4, etc.

In some embodiments, when the alert module 240 monitors in real time that the dissolved oxygen value in the body of water is below a first preset threshold or above a second preset threshold, the alert module 240 sends a remote control signal to the blower 4, the blower 4 receives the signal to increase the blast volume, the body of water is supplied with a greater amount of air to ensure that the dissolved oxygen value is increased above the first preset threshold, or the blower 4 receives the signal to decrease the blast volume, the body of water is supplied with a lesser amount of air to ensure that the dissolved oxygen value is decreased below the second preset threshold, and the aeration control apparatus 100 may continue to operate.

In some embodiments, the warning module 240 monitors the dissolved oxygen value in the water in real time, so that the on-site production safety can be ensured, and the aeration control device 100 can quickly respond to various on-site emergency situations, such as sudden water volume increase, momentary water volume decrease, greasy dirt interference, sludge concentration change caused by sludge discharge, and the like.

Fig. 4 is an exemplary flowchart of an initial mapping relation determination method in an aeration control method according to some embodiments of the present description.

In some embodiments, as shown in FIG. 4, determining the initial mapping of the blast parameters to the oxygen transfer efficiency (i.e., step 310) may include the steps of:

Step 311, obtaining a plurality of calibration oxygen transfer efficiencies of the water body after continuously aerating for a first preset duration under a plurality of preset blasting parameters. In some embodiments, after the aeration control apparatus 100 is installed, a pre-operation debugging is required, a plurality of preset air blast parameters are input to the air blower 4, so that the aeration control apparatus 100 aerates the water body, and a value of the calibrated oxygen transfer efficiency corresponding to each preset air blast parameter is recorded. In some embodiments, when the blower 4 is adjusted to a preset blowing parameter, the water body is continuously aerated for a first preset duration under the preset blowing parameter, and a value of the calibrated oxygen transfer efficiency corresponding to the preset blowing parameter is obtained. In some embodiments, the value of the calibrated oxygen transfer efficiency may be a representative value of the oxygen transfer efficiency over its aeration period. The aeration period herein refers to a period of time during which the blower 4 continuously aerates the water body for a first preset duration based on a preset blasting parameter. In some embodiments, representative values of oxygen transfer efficiency refer to values (e.g., average, median, etc.) that may represent a reasonable amount over a certain aeration period. In some embodiments, the representative value of oxygen transfer efficiency may be a median of a plurality of oxygen transfer efficiencies obtained during a certain aeration period. Each control period takes the median of the values of the oxygen transfer efficiency in that control period as the final nominal oxygen transfer efficiency. In some embodiments, the value of the calibrated oxygen transfer efficiency may also be the value of the oxygen transfer efficiency at the end of its aeration period.

In some embodimentsIn an example, the blowing parameters may include the blower air volume, the blower frequency, or the blower power, and other parameters for controlling the operation state of the blower 4, and the kind of the blowing parameters may be set according to the specific model of the field blower 4. For example, the blowing parameter may be a blower frequency, the interval between every two adjacent preset blowing parameters being in the range of 5Hz or more. As another example, the blowing parameter may be blower power, with the spacing between every two adjacent preset blowing parameters being ≡10Kw. As another example, the blowing parameters may be the blower air volume, the interval between every two adjacent preset blowing parameters being equal to or more than 10m ³ And/min. In some embodiments, the range of intervals between every two adjacent blowing parameters may be equal. In some embodiments, the range of intervals between every two adjacent blowing parameters may be unequal (e.g., a plurality of preset blowing parameters set randomly).

In some embodiments, the number of preset blast parameters may be set according to the specific model of the site blower 4, the water quality contaminant concentration, the microbial activity, etc. The more the number of preset blast parameters, the more the calibrated oxygen transfer efficiencies can be obtained, and the higher the precision of the curve, function or table which can be fitted to represent the initial mapping relationship, the more sufficient the reference data is when the aeration control equipment 100 is formally operated. In some embodiments, the number of preset blast parameters is at least 2. In some embodiments, the number of preset blast parameters may be greater than 10.

In some embodiments, the first preset time period may be set according to the specific model of the site blower 4, the water quality contaminant concentration, the microbial activity, and the like. In some embodiments, the first preset time period may be 5 to 15 minutes. In some embodiments, the first preset time period may be 5 minutes, 8 minutes, 10 minutes, or 15 minutes. In some embodiments, the first preset time period may also be other time periods manually set according to the field requirement, for example, 30 minutes, 60 minutes, 70 minutes, 80 minutes, or the like.

In some embodiments, calibrating the oxygen transfer efficiency refers to a reference value of oxygen transfer efficiency in the body of water obtained by commissioning the aeration control equipment 100 prior to the actual operation. Through debugging, each preset blast parameter obtains a corresponding calibrated oxygen transfer efficiency.

Step 312, determining an initial mapping relationship based on the plurality of preset blowing parameters and the plurality of calibrated oxygen transfer efficiencies. In some embodiments, during the debugging process of the aeration control device 100, the value of the calibrated oxygen transfer efficiency corresponding to each preset air blast parameter is recorded, and the initial mapping relationship between the air blast parameter and the oxygen transfer efficiency may be represented by using curve fitting, function fitting, or table making. In some embodiments, as shown in FIG. 6, the initial mapping of the blowing parameters to the oxygen transfer efficiency may be represented using a fitted curve, where the ordinate represents the blowing parameters and the abscissa represents the oxygen transfer efficiency. After the initial mapping of the blast parameters to oxygen transfer efficiency is determined, it may be input into a control module of the processor (e.g., mapping determination module 210) or stored in a memory device for retrieval by the control module of the processor.

It should be noted that the above description of the process 300 is for purposes of example and illustration only and is not intended to limit the scope of applicability of the present disclosure. Various modifications and changes to flow 300 will be apparent to those skilled in the art in light of the present description. However, such modifications and variations are still within the scope of the present description.

Fig. 5 is yet another exemplary flow chart of an aeration control method according to some embodiments of the present description.

In some embodiments, to continuously regulate oxygen transfer efficiency in a body of water, embodiments of the present disclosure also provide a flow 400 of an aeration control method. In some embodiments, referring to fig. 5, the flow 400 of the aeration control method may further include the steps of:

step 410, determining an initial mapping relationship of the blast parameters and the oxygen transfer efficiency. In some embodiments, step 410 may be performed by the processor or the mapping determination module 210.

Step 420, obtaining current oxygen transfer efficiency in the body of water. In some embodiments, step 420 may be performed by the oxygen transfer efficiency acquisition module 220.

Step 430, determining a first target blowing parameter of the blower 4 based on the current oxygen transfer efficiency and the initial mapping relationship. In some embodiments, step 430 may be performed by the blowing parameter determination module 230.

Steps 410-430 are the same as steps 310-330, and detailed description thereof is omitted herein.

And step 440, continuously aerating the water body for a second preset time period based on the first target blasting parameters.

In some embodiments, the second preset time period may be set according to the specific model of the site blower 4, the water quality contaminant concentration, the microbial activity, and the like. In some embodiments, the second preset time period may be 5 minutes or more. In some embodiments, the second preset time period may be 5 minutes, 8 minutes, 10 minutes, 15 minutes, 60 minutes, 80 minutes, 100 minutes, or the like. In some embodiments, the second preset duration may be equal to the first preset duration. For example, the second preset time period and the first preset time period may both be set to 10 minutes.

In some embodiments, the second preset time period may be manually adjusted according to the sewage treatment progress, for example, a parameter of the second preset time period may be adjusted by the processor.

Step 450, obtaining the actual oxygen transfer efficiency of the aerated water body. In some embodiments, step 450 may be performed by the oxygen transfer efficiency acquisition module 220.

In some embodiments, the actual oxygen transfer efficiency refers to an oxygen transfer efficiency at some point in time during actual use of the aeration control equipment 100 in the field, or a representative value of oxygen transfer efficiency over some aeration period. The aeration period here refers to a period of time during which the blower 4 continuously aerates the water body for a second preset period of time based on the first target blasting parameter. The actual oxygen transfer efficiency is evaluated by referring to the calibration oxygen transfer efficiency evaluation method above.

In some embodiments, the actual oxygen transfer efficiency and the oxygen transfer efficiency mapped by the first target blowing parameter on the initial mapping relationship may be different, so the following steps 460-470 are needed to update the initial mapping relationship to accommodate the change in the body of water.

Step 460, determining a second target blowing parameter of the blower 4 based on the actual oxygen transfer efficiency and the initial mapping relationship. In some embodiments, step 460 may be performed by the blowing parameter determination module 230.

In some embodiments, the second target blowing parameter refers to a mapped value of actual oxygen transfer efficiency in the initial mapping relationship. The processor may input the obtained second target blasting parameter as a subsequent control parameter of the blower 4 to the blower 4, so that the blower 4 continuously aerates the water body for a second preset period of time with the second target blasting parameter, so as to readjust the oxygen transfer efficiency in the water body. For example, step 450, obtaining an actual oxygen transfer efficiency of 18% in the aerated water body; step 460 of determining that the second target blowing parameter of the blower 4 is 330m based on the actual oxygen transfer efficiency 18% and the initial mapping relationship shown in fig. 2 ³ And/min. At this time, the second target blowing parameter 330m is to be acquired ³ And/min is used as a subsequent control parameter of the blower 4 to control the blower 4 to continuously aerate the water body for a second preset time period so as to acquire the actual oxygen transfer efficiency of a new round, and the first target blasting parameter of the blower 4 of the next round is always determined based on the newly acquired actual oxygen transfer efficiency and the initial mapping relation (if the initial mapping relation is updated, the updated initial mapping relation).

Step 470, updating the initial mapping relationship based on the actual oxygen transfer efficiency. In some embodiments, step 470 may be performed by the mapping determination module 210.

When the aeration control apparatus 100 is in actual operation, the water body (microbial state) in the aerobic tank 3 is constantly changed due to environmental influences, such as rain, air temperature change, air pressure change, and aeration head state, which affect the water body change. The initial mapping is not necessarily appropriate for the current body of water. To solve this problem, in the process of the formal operation of the aeration control equipment 100, the initial mapping relationship is updated according to the actual oxygen transfer efficiency of the water body in the aerobic tank 3, so that the mapping relationship between the blast parameters and the oxygen transfer efficiency in the aeration control equipment 100 better conforms to the actual situation of the water body.

In some embodiments, updating the initial mapping based on the actual oxygen transfer efficiency includes: the oxygen transfer efficiency map value of the first target blowing parameter is updated to the actual oxygen transfer efficiency. For example, in the above embodiment, step 440 is performed based on the first target blowing parameter of 300m ³ Continuously aerating the water body for a second preset time period (for example, 10 minutes); step 450, obtaining the actual oxygen transfer efficiency of 18% in the aerated water body; step 460 of determining the second target blowing parameter 330m of the blower 4 based on the actual oxygen transfer efficiency 18% and the initial mapping relationship shown in FIG. 3 ³ A/min; step 470, setting the first target blowing parameter to 300m ³ The oxygen transfer efficiency of the/min map is updated to 18% of the actual oxygen transfer efficiency, and it is understood that the curve showing the mapping relationship in fig. 6 is updated, and the updated mapping relationship is used as the initial mapping relationship of the next cycle to continue the operation, thereby cycling. In some embodiments, step 470 is performed concurrently with step 460. In other embodiments, steps 460 and 470 may be performed sequentially.

It should be noted that the above description of the process 400 is for purposes of illustration and description only, and is not intended to limit the scope of applicability of the present disclosure. Various modifications and changes to flow 400 will be apparent to those skilled in the art in light of the present description. However, such modifications and variations are still within the scope of the present description.

Fig. 7 is an exemplary flow chart of an aeration control method according to other embodiments of the present description.

As shown in fig. 7, further embodiments of the present disclosure provide an aeration control method, the flow 500 of which may include the following steps. In some embodiments, the process 500 may be performed by a processor of the control cabinet 1.

Step 510, determining a target mapping relationship between the blast parameters and the oxygen transfer efficiency. In some embodiments, step 510 may be performed by the mapping determination module 210.

In some embodiments, the target mapping relationship refers to a steady state correspondence between oxygen transfer efficiency and blast parameters in the current body of water.

In some embodiments, the mapping determination module 210 may obtain an initial mapping of the blast parameter and the oxygen transfer efficiency, and then iteratively update the initial mapping to determine the target mapping.

The method for obtaining the initial mapping relationship may be referred to the corresponding description above, and will not be repeated here.

In some embodiments, the target mapping is obtained by iterative updating of the initial mapping. Iterative updating is a process of approaching the required steady state correspondence through a feedback process. In the iteration updating, the initial mapping relation obtained in the test run is used as a first iteration round, and the target mapping relation obtained in each subsequent iteration round is used as the initial mapping relation of the next iteration round. For a specific method of iterative updating see the description section of fig. 8 below.

At step 520, current oxygen transfer efficiency in the body of water is obtained. In some embodiments, step 520 may be performed by the oxygen transfer efficiency acquisition module 220. The current oxygen transfer efficiency is obtained by the method described in step 450 above.

Step 530, determining a target blowing parameter of the blower 4 based on the current oxygen transfer efficiency and the target mapping relationship. In some embodiments, step 530 may be performed by the blowing parameter determination module 230.

The target blast parameter refers to a corresponding value of the current oxygen transfer efficiency on the target map. After determining the target blowing parameters of the blower 4, the processor of the control cabinet 1 may control the blower 4 to continuously aerate the water body (e.g., continuously aerate for a second preset period of time) based on the target blowing parameters to maintain the oxygen transfer efficiency in the water body at the current oxygen transfer efficiency.

In some embodiments, the flow 500 of the aeration control method may also include detection and warning of the dissolved oxygen value of the body of water during aeration, see in particular the description related to flow 300 above.

It should be noted that the above description of the process 500 is for purposes of illustration and description only, and is not intended to limit the scope of applicability of the present disclosure. Various modifications and changes to flow 500 will be apparent to those skilled in the art in light of the present description. However, such modifications and variations are still within the scope of the present description.

Fig. 8 is an exemplary flow chart of iterative updating of aeration control methods according to other embodiments of the present description.

In some embodiments, iterative updating may refer to a process of updating the mapping relationship and ultimately determining the target mapping relationship over multiple rounds of iterations. The iterative update flow 600 may include the steps of:

step 610, obtaining a first oxygen transfer efficiency in a current iteration round of the body of water.

In some embodiments, in each iteration round of the mapping update, the mapping corresponding to the current iteration round may be referred to as the current mapping. In some embodiments, the current mapping is a mapping to be updated in the current iteration round. In some embodiments, in the first round of iterations, the current mapping may be the initial mapping. In the subsequent iteration update, the current mapping relationship may be an updated mapping relationship obtained based on the previous iteration. The current iteration round may be understood as the first iteration round, or any iteration round may be understood as the current iteration round.

In some embodiments, the processor may obtain a first oxygen transfer efficiency in the body of water for a current iteration round. The first oxygen transfer efficiency may be an oxygen transfer efficiency when the blast parameter is not set in the current iteration round, and at this time, the water body may not be in an aeration state, or the water body is in an aeration state set in the previous iteration round (i.e., a state in which aeration is performed based on the blast parameter set in the previous iteration round).

Step 620, determining a first blowing parameter of the blower 4 based on the first oxygen transfer efficiency and the current mapping relationship of the current iteration round.

In some embodiments, in the current mapping relationship, the first oxygen transfer efficiency and the first blowing parameter are mapped values to each other, and a unique corresponding first blowing parameter may be found from the current mapping relationship based on the first oxygen transfer efficiency.

Step 630, obtaining a second oxygen transfer efficiency of the water body after continuously aerating for a second preset time period under the first air blast parameter.

After the first air blast parameter is determined, the processor of the control cabinet 1 can control the air blower 4 to aerate the water body based on the first air blast parameter, and when the aeration lasts for a second preset duration, the second oxygen transfer efficiency is obtained through the oxygen transfer efficiency obtaining module.

Step 640, determining a second air-blast parameter of the air-blast 4 based on the second oxygen transfer efficiency and the current mapping relationship. The second oxygen transfer efficiency is a mapping value of a second blast parameter in the current mapping relation.

Step 650, redetermining the mapping value of the first blast parameter as the second oxygen transfer efficiency to update the current mapping relationship. One update to the current mapping relationship in the current iteration round may be achieved, via step 650. The updated mapping is used as the current mapping in step 620 for the next iteration round.

Step 660, obtaining a third oxygen transfer efficiency of the water body after continuously aerating for a second preset time under the second blasting parameter, and taking the third oxygen transfer efficiency as the first oxygen transfer efficiency of the next iteration round.

In this loop, steps 610 through 660, the target mapping relationship is determined by continuously and iteratively updating to obtain the steady state correspondence required for the approximation. In some embodiments, the iterative update may be terminated based on the iteration round reaching a preset number of times, and the current mapping at the termination of the iteration is determined as the target mapping. In some embodiments, the iterative updating may also be terminated based on the difference between the current mappings in adjacent iteration rounds being less than a preset threshold, and the current mapping at the termination of the iteration is determined to be the target mapping.

In some embodiments, the oxygen capture dynamic DO aeration control methods described herein may be performed locally, remotely, or a combination thereof.

It should be noted that the above description of the aeration control apparatus and its devices/modules is for convenience of description only and is not intended to limit the application to the scope of the illustrated embodiments. It will be appreciated by those skilled in the art that, given the principles of the apparatus, it is possible to combine individual devices/modules arbitrarily or to construct sub-apparatus into connection with other devices/modules without departing from such principles. For example, in some embodiments, the mapping relation determining module 210 and the blowing parameter determining module 230 may be different modules in one processor (for example, the processor of the control cabinet 1), or may be one module to implement the functions of two or more modules described above. For another example, each module may have a respective memory module. For another example, each module may share a memory module. Such variations are within the scope of the present application.

Possible benefits of embodiments of the present description include, but are not limited to: (1) The two aeration control methods provided by the specification both use the numerical value of oxygen transfer efficiency to perform aeration control, and the parameter can intuitively reflect the microorganism in the water body in the aerobic tank, so that the aeration control effect is better, and the energy consumption saving effect is better; (2) By determining the initial mapping relation between the air blast parameters and the oxygen transfer efficiency in the debugging stage, the air blast parameters can be directly determined according to the actual oxygen transfer efficiency based on the initial mapping relation in the formal operation so as to control and regulate the air blast; (3) In the formal operation process, the blast parameters and the oxygen transfer efficiency corresponding to the blast parameters can be recorded in real time, and the mapping relation between the blast parameters and the oxygen transfer efficiency is corrected (comprising the steps 470 and the flow 600 in the specification); (4) The dissolved oxygen value in the water body is monitored in real time through the warning module, so that the safety of on-site production can be ensured, and the aeration control equipment can rapidly respond to various on-site emergency conditions.

It should be noted that, the advantages that may be generated by different embodiments may be different, and in different embodiments, the advantages that may be generated may be any one or a combination of several of the above, or any other possible advantages that may be obtained.

While the basic concepts have been described above, it will be apparent to those skilled in the art that the foregoing detailed disclosure is by way of example only and is not intended to be limiting. Although not explicitly described herein, various modifications, improvements, and adaptations to the present disclosure may occur to one skilled in the art. Such modifications, improvements, and modifications are intended to be suggested within this specification, and therefore, such modifications, improvements, and modifications are intended to be included within the spirit and scope of the exemplary embodiments of the present invention.

Meanwhile, the specification uses specific words to describe the embodiments of the specification. Reference to "one embodiment," "an embodiment," and/or "some embodiments" means that a particular feature, structure, or characteristic is associated with at least one embodiment of the present description. Thus, it should be emphasized and should be appreciated that two or more references to "an embodiment" or "one embodiment" or "an alternative embodiment" in various positions in this specification are not necessarily referring to the same embodiment. Furthermore, certain features, structures, or characteristics of one or more embodiments of the present description may be combined as suitable.

Likewise, it should be noted that in order to simplify the presentation disclosed in this specification and thereby aid in understanding one or more inventive embodiments, various features are sometimes grouped together in a single embodiment, figure, or description thereof. This method of disclosure, however, is not intended to imply that more features than are presented in the claims are required for the present description. Indeed, less than all of the features of a single embodiment disclosed above.

In some embodiments, numerical parameters set forth in the specification and claims are approximations that may vary depending upon the desired properties sought to be obtained by the individual embodiments. In some embodiments, the numerical parameters should take into account the specified significant digits and employ a method for preserving the general number of digits. Although the numerical ranges and parameters set forth herein are approximations that may be employed in some embodiments to confirm the breadth of the range, in particular embodiments, the setting of such numerical values is as precise as possible.

Finally, it should be understood that the embodiments described in this specification are merely illustrative of the principles of the embodiments of this specification. Other variations are possible within the scope of this description. Thus, by way of example, and not limitation, alternative configurations of embodiments of the present specification may be considered as consistent with the teachings of the present specification. Accordingly, the embodiments of the present specification are not limited to only the embodiments explicitly described and depicted in the present specification.

Claims

1. An oxygen capture dynamic DO aeration control method, characterized in that the aeration control method comprises:

determining an initial mapping relation between the blast parameters and the oxygen transfer efficiency;

acquiring the current oxygen transfer efficiency in the water body;

a first target blower parameter of a blower is determined based on the current oxygen transfer efficiency and the initial mapping relationship.

2. An aeration control method according to claim 1, wherein said determining an initial mapping relation of the blasting parameter and the oxygen transfer efficiency includes:

obtaining a plurality of calibrated oxygen transfer efficiencies of the water body after continuously aerating for a first preset duration under a plurality of preset blasting parameters;

and determining the initial mapping relation based on the plurality of preset blasting parameters and the plurality of calibrated oxygen transfer efficiencies.

3. An aeration control method according to claim 1, wherein said aeration control method further comprises:

continuously aerating the water body for a second preset duration based on the first target blasting parameter;

acquiring the actual oxygen transfer efficiency of the water body after aeration;

a second target blower parameter of the blower is determined based on the actual oxygen transfer efficiency and the initial mapping relationship.

4. An aeration control method according to claim 3, wherein said aeration control method further comprises:

the initial mapping relation is updated based on the actual oxygen transfer efficiency.

5. An aeration control method according to claim 4, wherein updating the initial map based on the actual oxygen transfer efficiency includes:

And updating the oxygen transfer efficiency mapping value of the first target blasting parameter to the actual oxygen transfer efficiency.

6. An aeration control method according to claim 1, wherein said aeration control method further comprises:

aerating the body of water based on the first target blowing parameter;

monitoring the dissolved oxygen value of the water body in the aeration process;

and executing warning operation in response to the dissolved oxygen value being lower than a first preset threshold or higher than a second preset threshold.

7. An oxygen capture dynamic DO aeration control apparatus, characterized in that: 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 includes one or more processors; the one or more processors include:

the mapping relation determining module is used for determining an initial mapping relation between the blasting parameter and the oxygen transfer efficiency;

the oxygen transfer efficiency acquisition module is used for acquiring the current oxygen transfer efficiency in the water body;

and the blast parameter determining module is used for determining a first target blast parameter of the blast fan based on the current oxygen transfer efficiency and the initial mapping relation.

8. An oxygen capturing dynamic DO aeration control method is characterized in that: the aeration control method comprises the following steps:

Determining a target mapping relation between the blast parameters and the oxygen transfer efficiency;

acquiring the current oxygen transfer efficiency in the water body;

and determining a target blowing parameter of a blower based on the current oxygen transfer efficiency and the target mapping relation.

9. An aeration control method according to claim 8, wherein said determining a target mapping relationship of the blast parameter and the oxygen transfer efficiency includes:

acquiring an initial mapping relation between a blowing parameter and oxygen transfer efficiency;

and based on the initial mapping relation, carrying out iterative updating to determine the target mapping relation.

10. An aeration control method according to claim 9, wherein said obtaining an initial mapping relation of the blasting parameter and the oxygen transfer efficiency includes:

11. An aeration control method according to claim 9, wherein said iterative updating includes:

acquiring a first oxygen transfer efficiency in the water body in the current iteration round;

determining a first air blast parameter of the air blower based on the first oxygen transfer efficiency and a current mapping relation of a current iteration round, wherein the first oxygen transfer efficiency is a mapping value of the first air blast parameter in the current mapping relation;

Acquiring a second oxygen transfer efficiency of the water body after continuously aerating for a second preset time under the first blasting parameter;

determining a second air blast parameter of the air blast machine based on the second oxygen transfer efficiency and the current mapping relation, wherein the second oxygen transfer efficiency is a mapping value of the second air blast parameter in the current mapping relation;

re-determining the mapping value of the first blast parameter as the second oxygen transfer efficiency to update the current mapping relationship; and

and obtaining a third oxygen transfer efficiency of the water body after the water body is continuously aerated for a second preset time under the second blasting parameter, and taking the third oxygen transfer efficiency as a first oxygen transfer efficiency of the next iteration round.

12. An aeration control method according to claim 8, wherein said aeration control method further comprises:

aerating the body of water based on the target blast parameter;

13. An oxygen capture dynamic DO aeration control apparatus, characterized in that: 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 includes one or more processors; the one or more processors include:

The mapping relation determining module is used for determining an initial mapping relation and/or a target mapping relation of the blast parameter and the oxygen transfer efficiency;

and the air blast parameter determining module is used for determining target air blast parameters of the air blast machine based on the current oxygen transfer efficiency and the target mapping relation.