Aeration control method and device, electronic equipment and storage medium

Abstract

The embodiment of the invention discloses an aeration control method and device, electronic equipment and a storage medium. The method comprises the following steps: acquiring the current operation frequency of an aeration fan unit and the current dissolved oxygen value of target sewage subjected to aeration treatment by the aeration fan unit; under the condition that the current operation frequency of the aeration fan unit is the lowest operation frequency and the current dissolved oxygen value is greater than a first preset dissolved oxygen threshold value, controlling the aeration fan unit to work according to an intermittent control mode; wherein the intermittent control mode is a mode for controlling the aeration fan unit to alternately work according to a stop working state and a restart working state, and the restart working state is a state for operating the aeration fan unit according to the lowest operating frequency. According to the technical scheme provided by the embodiment of the invention, the current dissolved oxygen value of the target sewage can be reduced while the energy consumption waste of the aeration fan unit can be reduced, so that the condition of excessive aeration is reduced as much as possible, and the effect of improving the effluent quality of the target sewage is realized.

Description

Technical Field

[0001] The embodiments of the present invention relate to the technical field of sewage treatment, and in particular to an aeration control method, device, electronic equipment and storage medium. Background Art

[0002] AAO (Anaerobic-Anoxic-Oxic) process is the mainstream process for sewage treatment. In the AAO process system, an aeration fan is required to aerate the sewage.

[0003] In the prior art, target sewage with different water quality conditions is usually treated by adjusting the operating frequency of the aeration fan. However, in the process of implementing the present invention, it is found that the prior art has at least the following technical problems: when the aeration fan is operated at the lowest operating frequency, the target sewage is over-aerated, resulting in energy waste of the aeration fan. Summary of the invention

[0004] The embodiments of the present invention provide an aeration control method, device, electronic device and storage medium to reduce the current dissolved oxygen value of target sewage, minimize the occurrence of excessive aeration, and achieve the purpose of improving the effluent water quality of the target sewage.

[0005] According to one aspect of the present invention, there is provided an aeration control method, comprising:

[0006] Acquire the current operating frequency of the aeration fan unit and the current dissolved oxygen value of the target sewage being aerated by the aeration fan unit;

[0007] When the current operating frequency of the aeration fan unit is the lowest operating frequency and the current dissolved oxygen value is greater than a first preset dissolved oxygen threshold, controlling the aeration fan unit to operate in an intermittent control mode;

[0008] The intermittent control mode is a mode for controlling the aeration air unit to alternately operate in a stop working state and a restart working state, and the restart working state is a state in which the aeration air unit operates at the minimum operating frequency.

[0009] According to another aspect of the present invention, there is provided an aeration control device, the device comprising:

[0010] A current operating frequency acquisition module, used to acquire the current operating frequency of the aeration fan unit and the current dissolved oxygen value of the target sewage being aerated by the aeration fan unit;

[0011] an aeration fan unit control module, configured to control the aeration fan unit to operate in an intermittent control mode when the current operating frequency of the aeration fan unit is the lowest operating frequency and the current dissolved oxygen value is greater than a first preset dissolved oxygen threshold;

[0012] The intermittent control mode is a mode for controlling the aeration air unit to alternately operate in a stop working state and a restart working state, and the restart working state is a state in which the aeration air unit operates at the minimum operating frequency.

[0013] According to another aspect of the present invention, an electronic device is provided, the electronic device comprising:

[0014] at least one processor; and

[0015] a memory communicatively connected to the at least one processor; wherein,

[0016] The memory stores a computer program executable by the at least one processor, and the computer program is executed by the at least one processor so that the at least one processor can execute the aeration control method described in any embodiment of the present invention.

[0017] According to another aspect of the present invention, a computer-readable storage medium is provided, wherein the computer-readable storage medium stores computer instructions, and the computer instructions are used to enable a processor to implement the aeration control method according to any embodiment of the present invention when executed.

[0018] The technical solution of the embodiment of the present invention is to obtain the current operating frequency of the aeration fan group and the current dissolved oxygen value of the target sewage to be aerated by the aeration fan group; and, when the current operating frequency of the aeration fan group is the lowest operating frequency and the current dissolved oxygen value is greater than the first preset dissolved oxygen threshold, control the aeration fan group to work in an intermittent control mode; since the intermittent control mode is a mode in which the aeration fan group is controlled to work alternately between a stop working state and a restart working state, the restart working state is a state in which the aeration fan group is operated at the lowest operating frequency. Therefore, by controlling the aeration fan group to work alternately between a stop working state and a restart working state, the energy consumption waste of the aeration fan group is reduced, which is beneficial to reducing the current dissolved oxygen value of the target sewage, thereby minimizing the occurrence of excessive aeration and achieving the effect of improving the effluent water quality of the target sewage.

[0019] It should be understood that the contents described in this section are not intended to identify the key or important features of the embodiments of the present invention, nor are they intended to limit the scope of the present invention. Other features of the present invention will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0021] Figure 1 is a flow chart of an aeration control method provided according to an embodiment of the present invention;

[0022] Figure 2 is a flow chart of another aeration control method provided according to an embodiment of the present invention;

[0023] Figure 3 is a flow chart of another aeration control method provided according to an embodiment of the present invention;

[0024] Figure 4 is a structural schematic diagram of an aeration control device provided according to an embodiment of the present invention;

[0025] Figure 5 It is a schematic diagram of the structure of an electronic device for implementing the aeration control method according to an embodiment of the present invention. DETAILED DESCRIPTION

[0026] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0027] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "etc." and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0028] Figure 1This is a flow chart of an aeration control method provided according to an embodiment of the present invention. This embodiment is applicable to the case of controlling an aeration fan unit for aeration treatment of target sewage. The method can be executed by an aeration control device, which can be implemented in the form of hardware and / or software.

[0029] like Figure 1 As shown, the method of this embodiment may specifically include:

[0030] S110, obtaining a current operating frequency of the aeration fan unit and a current dissolved oxygen value of the target sewage to be aerated by the aeration fan unit.

[0031] The aeration fan group includes at least one aeration fan, and different aeration fans can work simultaneously or individually. In order to improve the working safety of each aeration fan in the aeration fan group, different aeration fans are usually used to work in rotation. Exemplarily, the aeration fan group is composed of three aeration fans. The current operating frequency is the operating frequency of the aeration fan currently working in the aeration fan group. The target sewage is the sewage treated by aeration through the aeration fan group.

[0032] In a specific implementation, the current control frequency of the aeration fan unit can be obtained through the control end of the aeration fan unit, and the control frequency is used as the current operating frequency. The target sewage is stored in an aerobic tank, and a dissolved oxygen sensor can be installed at the end of the aerobic tank. The dissolved oxygen value of the target sewage in the aerobic tank can be read by the dissolved oxygen sensor, and the dissolved oxygen value currently read by the dissolved oxygen sensor is used as the current dissolved oxygen value of the target sewage.

[0033] In this embodiment, the current operating frequency and the current dissolved oxygen value can be obtained randomly, or periodically, so as to timely control the water quality of the target sewage and avoid excessive aeration.

[0034] S120. When the current operating frequency of the aeration fan group is the lowest operating frequency and the current dissolved oxygen value is greater than a first preset dissolved oxygen threshold, the aeration fan group is controlled to operate in an intermittent control mode; wherein the intermittent control mode is a mode in which the aeration fan group is controlled to operate alternately between a stop working state and a restart working state, and the restart working state is a state in which the aeration fan group operates at the lowest operating frequency.

[0035] In order to ensure that the aeration fan unit can work normally, a minimum operating frequency is usually set for the aeration fan unit. When the operating frequency of the aeration fan unit is less than the minimum operating frequency, the aeration fan unit may be abnormal. Optionally, the minimum operating frequency may be a critical value for the aeration fan unit to surge, that is, a critical frequency for surge.

[0036] In a specific implementation, when the current operating frequency of the aeration fan group is the lowest operating frequency and the current dissolved oxygen value is greater than a preset dissolved oxygen threshold, before controlling the aeration fan group to enter the intermittent control mode, it also includes: based on the correspondence between the preset pipe pressure and the critical frequency for surge generation, determining the target critical frequency for surge generation corresponding to the target pipe pressure of the aeration fan group as the lowest operating frequency.

[0037] Among them, when the operating frequency of the aeration fan unit is less than the target surge critical frequency, the aeration fan unit will experience surge.

[0038] It should be noted that the critical frequency of the equipment when surge occurs will be affected by the characteristics of the aeration fan equipment itself and the delivery pipeline. Before the intermittent control mode is enabled, the critical frequency of surge of the aeration fan in the aeration fan group under multiple different pipe pressure conditions can be measured, and a continuous "pipe pressure-surge frequency function curve" can be generated using the second-order spline interpolation method. The "pipe pressure-surge frequency function curve" reflects the correspondence between the pipe pressure and the critical frequency of surge. In order to avoid surge during the operation of the aeration fan group, the target critical frequency of surge corresponding to the target pipe pressure of the aeration fan group is determined as the minimum operating frequency of the aeration fan in the aeration fan group.

[0039] In this embodiment, the target surge critical frequency corresponding to the target pipe pressure is used as the minimum operating frequency, thereby ensuring that the aeration fan in the aeration fan unit avoids surge during operation, which is beneficial to improving the operating safety of the aeration fan unit.

[0040] In this embodiment, after obtaining the current operating frequency and the current dissolved oxygen value, in order to avoid excessive aeration, it can be determined whether the current operating frequency is the lowest operating frequency, and the current dissolved oxygen value is greater than the first preset dissolved oxygen threshold. The first preset dissolved oxygen threshold is a critical oxygen value between excessive aeration and normal aeration set by a person skilled in the art according to actual application conditions. Exemplarily, the value range of the first preset dissolved oxygen threshold may be between 3 mg / L and 5 mg / L.

[0041] Specifically, when the aeration fan group includes multiple aeration fans, the specific implementation method of determining whether the current operating frequency of the aeration fan group is the lowest operating frequency includes: there is only one aeration fan working in the aeration fan group and the current operating frequency of the working aeration fan is the lowest operating frequency. At this time, it means that while ensuring the normal operation of the aeration fan, it is no longer possible to reduce the dissolved oxygen value in the target sewage by reducing the operating frequency.

[0042] Furthermore, when the current operating frequency of the aeration fan unit is the lowest operating frequency, determine whether the current dissolved oxygen value is greater than the first preset dissolved oxygen threshold; if it is greater than, it means that when the aeration fan unit operates at the current operating frequency, the target sewage is in a state of over-aeration; if it is less than or equal to, it means that when the aeration fan unit operates at the current operating frequency, the target sewage is not over-aerated.

[0043] In order to ensure that the effluent quality of the target sewage meets the standard requirements, when the current dissolved oxygen value is greater than the first preset dissolved oxygen threshold, the aeration fan unit can be controlled to work in an intermittent control mode, so that when the aeration fan unit is in a stopped working state, the dissolved oxygen value in the target sewage is reduced; when it is restarted, the dissolved oxygen value in the target sewage is increased. Compared with the prior art method of always using the lowest operating frequency, this is conducive to avoiding excessive aeration and facilitating the smooth adjustment of the dissolved oxygen value in the target sewage to the range required by the standard.

[0044] The technical solution of the embodiment of the present invention is to obtain the current operating frequency of the aeration fan group and the current dissolved oxygen value of the target sewage to be aerated by the aeration fan group; and, when the current operating frequency of the aeration fan group is the lowest operating frequency and the current dissolved oxygen value is greater than the first preset dissolved oxygen threshold, control the aeration fan group to work in an intermittent control mode; since the intermittent control mode is a mode in which the aeration fan group is controlled to work alternately between a stop working state and a restart working state, the restart working state is a state in which the aeration fan group is operated at the lowest operating frequency. Therefore, by controlling the aeration fan group to work alternately between a stop working state and a restart working state, the energy consumption waste of the aeration fan group is reduced, which is beneficial to reducing the current dissolved oxygen value of the target sewage, thereby minimizing the occurrence of excessive aeration and achieving the effect of improving the effluent water quality of the target sewage.

[0045] Figure 2 It is a flow chart of another aeration control method provided according to an embodiment of the present invention. Based on the above embodiments, this embodiment discloses a method of controlling the aeration fan group to work in an intermittent control mode: when the stop working time of the aeration fan group meets the first preset restart condition, and / or the latest water quality value of the target sewage meets the second preset restart condition, the aeration fan group is started to put the aeration fan group in a restart working state; wherein the stop working time is the time the aeration fan group is in the stop working state. The explanations of the terms that are the same or corresponding to the above embodiments are not repeated here. Figure 2 As shown, the method includes:

[0046] S210, obtaining the current operating frequency of the aeration fan unit and the current dissolved oxygen value of the target sewage to be aerated by the aeration fan unit.

[0047] S220. When the current operating frequency of the aeration fan group is the lowest operating frequency and the current dissolved oxygen value is greater than the first preset dissolved oxygen threshold, when the stoppage time of the aeration fan group meets the first preset restart condition, and / or when the latest water quality value of the target sewage meets the second preset restart condition, start the aeration fan group to put the aeration fan group in a restart working state.

[0048] Among them, the stop working time is the time the aeration fan unit is in a stopped working state.

[0049] In a specific implementation, the intermittent control mode is a mode in which the aeration fan unit is controlled to alternate between a stop working state and a restart working state, and the restart working state is a state in which the aeration fan unit operates at the lowest operating frequency. Specifically, after entering the intermittent control mode, the aeration fan unit can be controlled to be in a stop working state first, and based on the working time of the aeration fan unit and the water quality of the target sewage, it is determined whether to control the aeration fan unit to alternate between the restart working state and the stop working state.

[0050] It should be noted that when determining whether to switch from a stop working state to a restart working state, two influencing factors can be considered: the working condition of the aeration fan unit itself and the water quality of the target sewage. Specifically, in order to ensure that the aeration fan unit can operate safely and stably, the stop working time of the aeration fan unit can be determined, that is, the time interval between the moment when the aeration fan unit is adjusted to the stop working state and the current moment. When the stop working time meets the first preset restart condition, the aeration fan unit can be controlled to switch from the stop working state to the restart working state. Exemplarily, the restart working state is that only one aeration fan in the aeration fan unit is started, and the operating frequency of the started aeration fan is the lowest operating frequency.

[0051] At the same time, in order to ensure that the effluent water quality of the target sewage is within the qualified range and avoid the situation where the water quality does not meet the standard requirements, the water quality value of the water quality detection sensor used to detect the water quality value of the target sewage can also be randomly or periodically obtained, and the water quality value of the target sewage obtained most recently is used as the latest water quality value. Exemplarily, the water quality detection sensor includes a dissolved oxygen sensor and a mixed liquor suspended solids concentration sensor. Optionally, the latest water quality value includes the latest dissolved oxygen value and / or the latest mixed liquor suspended solids concentration value. If the latest water quality value meets the second preset restart condition, the aeration fan unit can be controlled to switch from a stopped working state to a restarted working state.

[0052] When determining whether to switch the aeration fan unit from a stopped working state to a restarted working state, this embodiment takes into account two factors: the aeration fan unit's own working condition and the water quality of the target sewage. This makes it possible to accurately determine whether the aeration fan unit needs to be restarted while ensuring that the aeration fan unit operates stably and effectively and the water quality of the target sewage is within an acceptable range.

[0053] Optionally, the first preset restart condition includes that the aeration fan group's shutdown time is greater than or equal to a preset maximum shutdown time corresponding to the aeration fan group; the second preset restart condition includes that the latest water quality value is less than a preset water quality threshold, and the latest water quality value includes the latest dissolved oxygen value and / or the latest mixed liquor suspended solids concentration value.

[0054] The water quality threshold includes a dissolved oxygen threshold and / or a mixed liquor suspended solids concentration threshold. For example, the dissolved oxygen threshold may range from 0.8 mg / L to 1.2 mg / L; the mixed liquor suspended solids concentration threshold may range from 500 mg / L to 1500 mg / L.

[0055] It should be noted that those skilled in the art can determine the maximum downtime of the aeration fan according to the working performance of the aeration fan in the aeration fan unit; they can also determine the maximum downtime through a suspended sludge sedimentation calibration test. Specifically, part of the target sewage can be obtained from the aerobic tank and introduced into a graduated cylinder. The cylinder is observed and the time taken for the mud-water boundary point to move to 1 / 5, 2 / 5, 3 / 5 and 4 / 5 of the total amount of target sewage taken out is recorded. The time taken to move the mud-water boundary point to 3 / 5 of the total amount of target sewage taken out is determined as the maximum downtime. To avoid exceeding the maximum downtime, the precipitation formed is relatively dense, which is not conducive to the normal airflow out of the aeration head.

[0056] In specific implementation, when the stop working time is greater than or equal to the maximum stop time of the aeration fan unit, the equipment performance of the aeration fan unit may be affected, or a chamber of sediment may be formed in the target sewage, which is not conducive to the normal flow of air out of the aeration head. Therefore, when it is detected that the stop working time is greater than or equal to the maximum stop time of the aeration fan unit, the aeration fan unit can be restarted. At the same time, when the latest water quality value is less than the preset water quality threshold, it means that the water quality is seriously polluted, and the aeration fan unit can be restarted to continue aeration treatment of the target sewage.

[0057] The present embodiment discloses a first preset restart condition and a second preset restart condition, thereby facilitating effective and accurate control of the aeration fan unit to enter a restart working state.

[0058] Optionally, the aeration fan group includes multiple aeration fans; starting the aeration fan group to put the aeration fan group in a restart working state includes: determining a current aeration fan corresponding to the restart working state; wherein the current aeration fan is different from the aeration fan actually started last time; when the current shutdown time of the current aeration fan is greater than the preset minimum shutdown time, starting the current aeration fan to put the aeration fan group in a restart working state.

[0059] It should be noted that the current aeration fan is the aeration fan that currently needs to be switched from a stopped working state to a restarted working state. In order to improve the working safety of each aeration fan in the aeration fan group, different aeration fans are usually used in rotation, that is, different aeration fans in the aeration fan group are started to work each time. Exemplarily, each aeration fan corresponds to a fan number, and the fan numbers of the aeration fans belonging to the same aeration fan group are consecutive numbers. For example, the aeration fan group includes three aeration fans with fan numbers 0, 1 and 2, respectively. The fan number of the current aeration fan can be determined according to a preset determination formula, and the determination formula is as follows:

[0060] N2=(N1+1)%N

[0061] Wherein, N represents the number of aeration fans included in the aeration fan group, N1 represents the fan number of the aeration fan actually started last time, N2 is the fan number of the current aeration fan, and % is the remainder operator.

[0062] Before starting the current aeration fan, it can be determined whether the current downtime of the current aeration fan is greater than the preset minimum downtime. It should be noted that a person skilled in the art can set the preset minimum downtime according to the actual performance of the aeration fan, which is not limited in this embodiment. The preset minimum downtimes of different aeration fans may be the same or different. If different preset minimum downtimes are set for different aeration fans, when determining whether to start the current aeration fan, the current downtime of the current aeration fan may be compared with the preset minimum downtime corresponding to the current aeration fan. Furthermore, when the current downtime of the current aeration fan is greater than the preset minimum downtime, the current aeration fan may be started to put the aeration fan group in a restart working state. When the current downtime duration is less than or equal to the preset minimum downtime duration, the current aeration fan can be re-determined in the aeration fan group until the current downtime duration of the re-determined current aeration fan is less than the preset minimum downtime duration, and then the re-determined current aeration fan can be restarted.

[0063] In this embodiment, the current aeration fan is started when the current downtime is longer than the preset minimum downtime, thereby ensuring that the current aeration fan can operate safely and normally. Through the intermittent control mode, the dissolved oxygen content of the target sewage in the aerobic tank can be effectively reduced, the denitrification reaction and phosphorus release reaction in the anoxic tank can be ensured to proceed normally, the carbon source dosage and the power consumption of the aeration fan can be reduced, and the quality of the total phosphorus and total nitrogen in the effluent can be improved.

[0064] Figure 3 It is a flow chart of another aeration control method provided according to an embodiment of the present invention. Based on the above embodiment, this embodiment optionally controls the aeration fan unit to work in an intermittent control mode, including: when the restart duration of the aeration fan unit is greater than the preset restart duration, detecting the restart dissolved oxygen value of the target sewage; when the restart dissolved oxygen value is less than the second preset dissolved oxygen threshold, exiting the intermittent control mode, and controlling the aeration fan unit according to the original control mode. Among them, the explanations of the terms that are the same or corresponding to the above embodiments are not repeated here. Figure 3 As shown, the method includes:

[0065] S310, obtaining the current operating frequency of the aeration fan group and the current dissolved oxygen value of the target sewage to be aerated by the aeration fan group.

[0066] S320. When the current operating frequency of the aeration fan unit is the lowest operating frequency and the current dissolved oxygen value is greater than the first preset dissolved oxygen threshold, and when the restart duration of the aeration fan unit is greater than the preset restart duration, detect the restart dissolved oxygen value of the target sewage, and when the restart dissolved oxygen value is less than the second preset dissolved oxygen threshold, exit the intermittent control mode and control the aeration fan unit according to the original control mode.

[0067] The restart duration is the duration during which the aeration fan unit is in the restart working state. The restart dissolved oxygen value is the dissolved oxygen value detected when the aeration unit is in the restart working state. The second preset dissolved oxygen threshold value may be the dissolved oxygen value of the target sewage under non-over-aeration conditions. For example, the value range of the second preset dissolved oxygen threshold value is between 2 mg / L and 3 mg / L.

[0068] In this embodiment, in order to ensure the safety of the aeration fan, before determining whether the aeration fan group is switched from the restart working state to the stop working state, it is necessary to determine whether the restart time of the aeration fan working in the aeration fan group is greater than the shortest running time. If so, it is determined whether the restart time of the aeration fan group is greater than the preset restart time. If not, the aeration fan continues to be controlled to work according to the restart working state.

[0069] In order to be able to flexibly control the aeration fan unit when the target sewage is in different water quality conditions, so as to achieve the purpose of effectively aerating the target sewage, the intermittent control mode can be exited when the water quality of the target sewage is stable and meets the standards. Specifically, when the restart duration of the aeration fan unit is greater than the preset restart duration, the restart dissolved oxygen value of the target sewage is detected. When the restart dissolved oxygen value is less than the second preset dissolved oxygen threshold, the target sewage is not currently over-aerated, and the water quality is at a medium or low level, the intermittent control mode can be exited, and the aeration fan unit can be controlled according to the original control mode. Among them, the original control mode is the control mode adopted by the aeration fan unit before starting the intermittent control mode.

[0070] Specifically, after detecting the restart dissolved oxygen value of the target sewage, it also includes: when the restart dissolved oxygen value is greater than or equal to the second preset dissolved oxygen threshold, controlling the aeration fan unit to stop working, so as to continue to control the aeration fan unit to work according to the intermittent control mode.

[0071] In this embodiment, when the restart dissolved oxygen value is greater than or equal to the second preset dissolved oxygen threshold, it indicates that the target sewage is currently over-aerated, and the aeration fan unit still needs to be controlled according to the intermittent control mode. Since the aeration fan unit is currently in the restart working state, in order to reduce the dissolved oxygen value in the target sewage, the restart working state of the aeration fan unit can be switched to the stop working state. And, according to the intermittent control mode, the stop working state is switched to the restart working state again, and the above steps are repeated. When the aeration fan unit is in the restart working state, the latest determined restart dissolved oxygen value is less than the second preset dissolved oxygen threshold, then the intermittent control mode is exited.

[0072] This embodiment provides a method for switching the restart working state of the aeration fan unit to the shutdown working state, thereby ensuring that the intermittent control mode is exited when there is no excessive aeration of the target sewage.

[0073] Figure 4 1 is a schematic diagram of the structure of an aeration control device provided according to an embodiment of the present invention, and the device is used to execute the aeration control method provided in any of the above embodiments. The device and the aeration control method of the above embodiments belong to the same inventive concept, and the details not described in detail in the embodiment of the aeration control device can refer to the embodiment of the aeration control method. Figure 4 As shown, the device comprises:

[0074] The current operating frequency acquisition module 10 is used to acquire the current operating frequency of the aeration fan unit and the current dissolved oxygen value of the target sewage to be aerated by the aeration fan unit;

[0075] The aeration fan unit control module 11 is used to control the aeration fan unit to operate in an intermittent control mode when the current operating frequency of the aeration fan unit is the lowest operating frequency and the current dissolved oxygen value is greater than a first preset dissolved oxygen threshold value;

[0076] Among them, the intermittent control mode is a mode for controlling the aeration fan unit to work alternately in a stop working state and a restart working state, and the restart working state is a state in which the aeration fan unit operates at the lowest operating frequency.

[0077] Based on any optional technical solution in the embodiments of the present invention, optionally, the device further includes:

[0078] A minimum operating frequency determination module is used to determine a target surge critical frequency corresponding to a target pipe pressure of the aeration fan unit as the minimum operating frequency based on a correspondence between a preset pipe pressure and a surge critical frequency before controlling the aeration fan unit to enter an intermittent control mode when the current operating frequency of the aeration fan unit is the minimum operating frequency and the current dissolved oxygen value is greater than a preset dissolved oxygen threshold value;

[0079] Among them, when the operating frequency of the aeration fan unit is less than the target surge critical frequency, the aeration fan unit will experience surge.

[0080] Based on any optional technical solution in the embodiment of the present invention, optionally, the aeration fan unit control module 11 includes:

[0081] An aeration fan starter module, used to start the aeration fan group to put the aeration fan group in a restart working state when the stop working time of the aeration fan group meets the first preset restart condition and / or the latest water quality value of the target sewage meets the second preset restart condition;

[0082] Among them, the stop working time is the time the aeration fan unit is in a stopped working state.

[0083] Based on any optional technical solution in the embodiments of the present invention, optionally, the first preset restart condition includes that the aeration fan group's shutdown time is greater than or equal to the preset maximum shutdown time corresponding to the aeration fan group; the second preset restart condition includes that the latest water quality value is less than a preset water quality threshold, and the latest water quality value includes the latest dissolved oxygen value and / or the latest mixed liquor suspended solids concentration value.

[0084] Based on any optional technical solution in the embodiment of the present invention, optionally, the aeration fan unit control module 11 includes:

[0085] The restart dissolved oxygen value detection submodule is used to detect the restart dissolved oxygen value of the target sewage when the restart time of the aeration fan unit is longer than the preset restart time;

[0086] An intermittent control mode exit submodule, used to exit the intermittent control mode when the restart dissolved oxygen value is less than a second preset dissolved oxygen threshold, and control the aeration fan unit according to the original control mode;

[0087] The restart time refers to the time the aeration fan unit is in the restart working state.

[0088] Based on any optional technical solution in the embodiment of the present invention, optionally, the aeration fan unit control module 11 further includes:

[0089] The aeration fan unit control submodule is used to control the aeration fan unit to stop working after detecting the restart dissolved oxygen value of the target sewage, when the restart dissolved oxygen value is greater than or equal to the second preset dissolved oxygen threshold, so as to continue to control the aeration fan unit to work in the intermittent control mode.

[0090] On the basis of any optional technical solution in the embodiment of the present invention, optionally, the aeration fan group includes a plurality of aeration fans; the aeration fan starter module includes:

[0091] A current aeration fan determination unit, used to determine the current aeration fan corresponding to the restart working state; wherein the current aeration fan is different from the aeration fan actually started last time;

[0092] The current aeration fan starting unit is used to start the current aeration fan when the current shutdown time of the current aeration fan is greater than the preset minimum shutdown time to put the aeration fan group into a restart working state.

[0093] The technical solution of the embodiment of the present invention is to obtain the current operating frequency of the aeration fan group and the current dissolved oxygen value of the target sewage to be aerated by the aeration fan group; and, when the current operating frequency of the aeration fan group is the lowest operating frequency and the current dissolved oxygen value is greater than the first preset dissolved oxygen threshold, control the aeration fan group to work in an intermittent control mode; since the intermittent control mode is a mode in which the aeration fan group is controlled to work alternately between a stop working state and a restart working state, the restart working state is a state in which the aeration fan group is operated at the lowest operating frequency. Therefore, by controlling the aeration fan group to work alternately between a stop working state and a restart working state, the energy consumption waste of the aeration fan group is reduced, which is beneficial to reducing the current dissolved oxygen value of the target sewage, thereby minimizing the occurrence of excessive aeration and achieving the effect of improving the effluent water quality of the target sewage.

[0094] It is worth noting that in the embodiment of the above-mentioned aeration control device, the various units and modules included are only divided according to functional logic, but are not limited to the above-mentioned division, as long as the corresponding functions can be achieved; in addition, the specific names of the functional units are only for the convenience of distinguishing each other, and are not used to limit the scope of protection of the present invention.

[0095] Figure 5 Schematic diagram of the structure of an electronic device for implementing the aeration control method of an embodiment of the present invention. The electronic device is intended to represent various forms of digital computers, such as laptop computers, desktop computers, workstations, personal digital assistants, servers, blade servers, mainframe computers, and other suitable computers. The electronic device may also represent various forms of mobile devices, such as personal digital processing, cellular phones, smart phones, wearable devices (such as helmets, glasses, watches, etc.) and other similar computing devices. The components shown herein, their connections and relationships, and their functions are merely examples and are not intended to limit the implementation of the present invention described and / or claimed herein.

[0096] like Figure 5 As shown, the electronic device 20 includes at least one processor 21, and a memory connected to the at least one processor 21, such as a read-only memory (ROM) 22, a random access memory (RAM) 23, etc., wherein the memory stores a computer program that can be executed by at least one processor, and the processor 21 can perform various appropriate actions and processes according to the computer program stored in the read-only memory (ROM) 22 or the computer program loaded from the storage unit 28 to the random access memory (RAM) 23. In RAM23, various programs and data required for the operation of the electronic device 20 can also be stored. The processor 21, ROM22 and RAM23 are connected to each other through a bus 24. An input / output (I / O) interface 25 is also connected to the bus 24.

[0097] A number of components in the electronic device 20 are connected to the I / O interface 25, including: an input unit 26, such as a keyboard, a mouse, etc.; an output unit 27, such as various types of displays, speakers, etc.; a storage unit 28, such as a disk, an optical disk, etc.; and a communication unit 29, such as a network card, a modem, a wireless communication transceiver, etc. The communication unit 29 allows the electronic device 20 to exchange information / data with other devices through a computer network such as the Internet and / or various telecommunication networks.

[0098] The processor 21 may be a variety of general and / or special processing components with processing and computing capabilities. Some examples of the processor 21 include, but are not limited to, a central processing unit (CPU), a graphics processing unit (GPU), various special artificial intelligence (AI) computing chips, various processors running machine learning model algorithms, a digital signal processor (DSP), and any appropriate processor, controller, microcontroller, etc. The processor 21 executes the various methods and processes described above, such as the aeration control method.

[0099] In some embodiments, the aeration control method may be implemented as a computer program, which is tangibly contained in a computer-readable storage medium, such as a storage unit 28. In some embodiments, part or all of the computer program may be loaded and / or installed on the electronic device 20 via the ROM 22 and / or the communication unit 29. When the computer program is loaded into the RAM 23 and executed by the processor 21, one or more steps of the aeration control method described above may be performed. Alternatively, in other embodiments, the processor 21 may be configured to perform the aeration control method in any other appropriate manner (e.g., by means of firmware).

[0100] Various implementations of the systems and techniques described above herein can be implemented in digital electronic circuit systems, integrated circuit systems, field programmable gate arrays (FPGAs), application specific integrated circuits (ASICs), application specific standard products (ASSPs), systems on chips (SOCs), load programmable logic devices (CPLDs), computer hardware, firmware, software, and / or combinations thereof. These various implementations can include: being implemented in one or more computer programs that can be executed and / or interpreted on a programmable system including at least one programmable processor, which can be a special purpose or general purpose programmable processor that can receive data and instructions from a storage system, at least one input device, and at least one output device, and transmit data and instructions to the storage system, the at least one input device, and the at least one output device.

[0101] Computer programs for implementing the methods of the present invention may be written in any combination of one or more programming languages. These computer programs may be provided to a processor of a general-purpose computer, a special-purpose computer, or other programmable data processing device, so that when the computer program is executed by the processor, the functions / operations specified in the flow chart and / or block diagram are implemented. The computer program may be executed entirely on the machine, partially on the machine, partially on the machine and partially on a remote machine as a stand-alone software package, or entirely on a remote machine or server.

[0102] In the context of the present invention, a computer-readable storage medium may be a tangible medium that may contain or store a computer program for use by or in combination with an instruction execution system, device or equipment. A computer-readable storage medium may include, but is not limited to, electronic, magnetic, optical, electromagnetic, infrared, or semiconductor systems, devices or equipment, or any suitable combination of the foregoing. Alternatively, a computer-readable storage medium may be a machine-readable signal medium. A more specific example of a machine-readable storage medium may include an electrical connection based on one or more lines, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.

[0103] To provide interaction with a user, the systems and techniques described herein may be implemented on an electronic device having: a display device (e.g., a CRT (cathode ray tube) or LCD (liquid crystal display) monitor) for displaying information to the user; and a keyboard and a pointing device (e.g., a mouse or trackball) through which the user can provide input to the electronic device. Other types of devices may also be used to provide interaction with the user; for example, the feedback provided to the user may be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user may be received in any form (including acoustic input, voice input, or tactile input).

[0104] The systems and techniques described herein may be implemented in a computing system that includes backend components (e.g., as a data server), or a computing system that includes middleware components (e.g., an application server), or a computing system that includes frontend components (e.g., a user computer with a graphical user interface or a web browser through which a user can interact with implementations of the systems and techniques described herein), or a computing system that includes any combination of such backend components, middleware components, or frontend components. The components of the system may be interconnected by any form or medium of digital data communication (e.g., a communication network). Examples of communication networks include: a local area network (LAN), a wide area network (WAN), a blockchain network, and the Internet.

[0105] A computing system may include a client and a server. The client and the server are generally remote from each other and usually interact through a communication network. The client and server relationship is generated by computer programs running on the corresponding computers and having a client-server relationship with each other. The server may be a cloud server, also known as a cloud computing server or cloud host, which is a host product in the cloud computing service system to solve the defects of difficult management and weak business scalability in traditional physical hosts and VPS services.

[0106] It should be understood that the various forms of processes shown above can be used to reorder, add or delete steps. For example, the steps described in the present invention can be executed in parallel, sequentially or in different orders, as long as the desired results of the technical solution of the present invention can be achieved, and this document does not limit this.

[0107] The above specific implementations do not constitute a limitation on the protection scope of the present invention. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modification, equivalent substitution and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An aeration control method, characterized in that: include: Acquire the current operating frequency of the aeration fan unit and the current dissolved oxygen value of the target sewage being aerated by the aeration fan unit; When the current operating frequency of the aeration fan unit is the lowest operating frequency and the current dissolved oxygen value is greater than a first preset dissolved oxygen threshold, controlling the aeration fan unit to operate in an intermittent control mode; The intermittent control mode is a mode for controlling the aeration air unit to alternately operate in a stop working state and a restart working state, and the restart working state is a state in which the aeration air unit operates at the minimum operating frequency.

2. The method according to claim 1, characterized in that Before controlling the aeration fan unit to enter the intermittent control mode when the current operating frequency of the aeration fan unit is the lowest operating frequency and the current dissolved oxygen value is greater than a preset dissolved oxygen threshold, the method further includes: Based on a preset correspondence between the pipe pressure and the critical frequency of surge generation, determining a target critical frequency of surge generation corresponding to the target pipe pressure of the aeration fan unit as the minimum operating frequency; Wherein, when the operating frequency of the aeration air unit is less than the target surge critical frequency, the aeration air unit experiences surge.

3. The method according to claim 1, characterized in that The controlling the aeration fan unit to operate in an intermittent control mode includes: When the stop working time of the aeration air unit meets the first preset restart condition, and / or the latest water quality value of the target sewage meets the second preset restart condition, starting the aeration air unit to put the aeration air unit in the restart working state; The stop working time refers to the time during which the aeration fan unit is in a stop working state.

4. The method according to claim 3, characterized in that The first preset restart condition includes that the aeration fan group's shutdown time is greater than or equal to the preset maximum shutdown time corresponding to the aeration fan group; the second preset restart condition includes that the latest water quality value is less than a preset water quality threshold, and the latest water quality value includes the latest dissolved oxygen value and / or the latest mixed liquor suspended solids concentration value.

5. The method according to claim 1, characterized in that The controlling the aeration fan unit to operate in an intermittent control mode includes: When the restart time of the aeration fan unit is longer than the preset restart time, detecting the restart dissolved oxygen value of the target sewage; When the restart dissolved oxygen value is less than a second preset dissolved oxygen threshold, exiting the intermittent control mode, and controlling the aeration fan unit according to the original control mode; The restart duration is the time during which the aeration fan unit is in the restart working state.

6. The method according to claim 5, characterized in that After detecting the restart dissolved oxygen value of the target sewage, the method further includes: When the restart dissolved oxygen value is greater than or equal to the second preset dissolved oxygen threshold, the aeration air unit is controlled to stop working, so as to continue to be controlled to work according to the intermittent control mode.

7. The method according to claim 3, characterized in that The aeration air unit includes a plurality of aeration air units; and starting the aeration air unit to put the aeration air unit in the restart working state includes: Determine the current aeration fan corresponding to the restart working state; wherein the current aeration fan is different from the aeration fan actually started last time; When the current shutdown time of the current aeration fan is greater than the preset minimum shutdown time, the current aeration fan is started to put the aeration fan unit in the restart working state.

8. An aeration control device, characterized in that: include: A current operating frequency acquisition module, used to acquire the current operating frequency of the aeration fan unit and the current dissolved oxygen value of the target sewage being aerated by the aeration fan unit; an aeration fan unit control module, configured to control the aeration fan unit to operate in an intermittent control mode when the current operating frequency of the aeration fan unit is the lowest operating frequency and the current dissolved oxygen value is greater than a first preset dissolved oxygen threshold; The intermittent control mode is a mode for controlling the aeration air unit to alternately operate in a stop working state and a restart working state, and the restart working state is a state in which the aeration air unit operates at the minimum operating frequency.

9. An electronic device, characterized in that: The electronic device comprises: at least one processor; and a memory communicatively connected to the at least one processor; wherein, The memory stores a computer program executable by the at least one processor, and the computer program is executed by the at least one processor so that the at least one processor can perform the aeration control method according to any one of claims 1 to 7.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores computer instructions, and the computer instructions are used to enable a processor to implement the aeration control method according to any one of claims 1 to 7 when executed.

Images