Aeration control method, device, electronic device and storage medium

Abstract

The embodiment of the present invention discloses an aeration control method, device, electronic device and storage medium. The method includes: obtaining the current operating frequency of the aeration air unit and the current dissolved oxygen value of the target sewage to be aerated by the aeration air unit; when the current operating frequency of the aeration air unit is the lowest operating frequency and the current dissolved oxygen value is greater than the first preset dissolved oxygen threshold, controlling the aeration air unit to operate in an intermittent control mode; wherein the intermittent control mode is a mode in which the aeration air unit is controlled 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 in accordance with the lowest operating frequency. The technical solution of the embodiment of the present invention can reduce the energy consumption waste of the aeration air unit while being conducive 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.

Description

Technical Field

[0001] 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 wastewater of varying water quality is typically treated by adjusting the operating frequency of the aeration fan. However, during the implementation of the present invention, it was discovered that the prior art suffers from at least the following technical issues: When the aeration fan is operated at the minimum operating frequency, the target wastewater may be over-aerated, resulting in wasted energy consumption. 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] Obtaining a current operating frequency of the aeration fan unit and a 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 for acquiring 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, 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. 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 embodiment of the present invention.

[0017] According to another aspect of the present invention, a computer-readable storage medium is provided. 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 unit and the current dissolved oxygen value of the target sewage to be aerated by the aeration fan unit; and, 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, the aeration fan unit is controlled to operate in an intermittent control mode; since the intermittent control mode is a mode in which the aeration fan unit is controlled to operate alternately between a stop working state and a restart working state, the restart working state is a state in which the aeration fan unit operates at the lowest operating frequency. Therefore, by controlling the aeration fan unit to operate alternately between a stop working state and a restart working state, the energy waste of the aeration fan unit 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 content described in this section is not intended to identify the key or important features of the embodiments of the present invention, nor is it intended to limit the scope of the present invention. Other features of the present invention will become readily 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 2 is a schematic structural diagram of an aeration control device provided according to an embodiment of the present invention;

[0025] Figure 5 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 solutions of the present invention, the technical solutions 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 embodiments described 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 making creative efforts should fall within the scope of protection of the present invention.

[0027] It should be noted that the terms "first", "second", etc. in the description 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 numbers 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 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 according to an embodiment of the present invention. This embodiment is applicable to controlling an aeration fan unit used to aerate target wastewater. The method can be performed by an aeration control device, which can be implemented in hardware and / or software.

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

[0030] S110 , 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.

[0031] The aeration fan unit includes at least one aeration fan. Different aeration fans can operate simultaneously or independently. To improve operational safety, the aeration fans in the aeration fan unit are typically rotated. For example, the aeration fan unit comprises three aeration fans. The current operating frequency is the operating frequency of the currently operating aeration fan in the aeration fan unit. The target wastewater is the wastewater being aerated by the aeration fan unit.

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

[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 air unit is the lowest operating frequency and the current dissolved oxygen value is greater than a first preset dissolved oxygen threshold, the aeration air unit is controlled to operate in an intermittent control mode; wherein the intermittent control mode is a mode in which the aeration air unit 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 air unit operates at the lowest operating frequency.

[0035] To ensure the proper functioning of the aeration fan unit, a minimum operating frequency is typically set. If the operating frequency falls below this minimum frequency, the aeration fan unit may experience an abnormality. Alternatively, the minimum operating frequency may be the critical value at which surge occurs in the aeration fan unit, i.e., the critical surge frequency.

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

[0037] When the operating frequency of the aeration fan unit is lower than the target surge critical frequency, the aeration fan unit will experience surge.

[0038] It should be noted that the critical frequency of the aeration fan equipment when surge occurs due to the inherent characteristics of the aeration fan equipment and the delivery pipeline. Before the intermittent control mode is enabled, the critical frequency of the aeration fan surge phenomenon in the aeration fan unit 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 unit, the target critical frequency of surge corresponding to the target pipe pressure of the aeration fan unit is determined as the minimum operating frequency of the aeration fan in the aeration fan unit.

[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, to avoid overaeration, it is determined whether the current operating frequency is the minimum operating frequency and whether the current dissolved oxygen value is greater than a first preset dissolved oxygen threshold. The first preset dissolved oxygen threshold is the critical oxygen value between overaeration and normal aeration, set by those skilled in the art based on actual application conditions. For example, the first preset dissolved oxygen threshold can range from 3 mg / L to 5 mg / L.

[0041] Specifically, if the aeration fan group includes multiple aeration fans, determining whether the current operating frequency of the aeration fan group is the minimum operating frequency may include: if only one aeration fan in the aeration fan group is operating and the current operating frequency of the operating aeration fan is the minimum operating frequency. In this case, it indicates that the dissolved oxygen value in the target wastewater cannot be reduced by reducing the operating frequency while ensuring the normal operation of the aeration fan.

[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] To ensure the effluent quality of the target wastewater meets standard requirements, if the current dissolved oxygen value exceeds a first preset dissolved oxygen threshold, the aeration fan unit can be controlled to operate in an intermittent control mode. This reduces the dissolved oxygen value in the target wastewater when the aeration fan unit is stopped, and increases it when it is restarted. Compared to the existing method of always operating at the lowest operating frequency, this helps avoid over-aeration and facilitates smooth adjustment of the dissolved oxygen value in the target wastewater to the standard range.

[0044] The technical solution of the embodiment of the present invention is to obtain 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; and, 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, the aeration fan unit is controlled to operate in an intermittent control mode; since the intermittent control mode is a mode in which the aeration fan unit is controlled to operate alternately between a stop working state and a restart working state, the restart working state is a state in which the aeration fan unit operates at the lowest operating frequency. Therefore, by controlling the aeration fan unit to operate alternately between a stop working state and a restart working state, the energy waste of the aeration fan unit 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 embodiment, this embodiment discloses a method for 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 length that 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: 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.

[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 shutdown 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, start the aeration fan group to put the aeration fan group into a restart working state.

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

[0049] In practice, intermittent control mode involves alternating between a shutdown state and a restart state, with the restart state being the state where the aeration fan unit operates at its lowest frequency. Specifically, after entering intermittent control mode, the aeration fan unit may be initially placed in a shutdown state. Based on the aeration fan unit's operating hours and the target wastewater's water quality, a determination is made as to whether to alternate between the restart and shutdown states.

[0050] It should be noted that when determining whether to switch from a stopped working state to a restarted working state, two influencing factors may 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 may be determined, that is, the time interval between the moment when the aeration fan unit is adjusted to the stopped working state and the current moment. When the stop working time meets the first preset restart condition, the aeration fan unit may be controlled to switch from the stopped working state to the restarted working state. Exemplarily, the restarted 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 to 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 can 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 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.

[0054] The water quality thresholds include 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 based on 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, a portion 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 dividing 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 dividing 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 sediment formed is relatively dense, which is not conducive to the normal flow of air out of the aeration head.

[0056] In practice, if the aeration fan unit's downtime is greater than or equal to its maximum downtime, it may impact its performance or cause sediment to form in the target wastewater, hindering proper airflow out of the aeration head. Therefore, if the downtime is detected to be greater than or equal to its maximum downtime, the aeration fan unit can be restarted. Furthermore, if the latest water quality reading is less than a preset threshold, indicating severe water contamination, the aeration fan unit can be restarted to continue aerating the target wastewater.

[0057] This 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 into a restart working state includes: determining 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, starting the current aeration fan to put the aeration fan group into 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 rotated, 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 those skilled in the art can set the preset minimum downtime according to the actual performance of the aeration fan, and this embodiment does not limit this. The preset minimum downtimes of different aeration fans can 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 can be compared with the preset minimum downtime corresponding to the current aeration fan. In addition, when the current downtime of the current aeration fan is greater than the preset minimum downtime, the current aeration fan can be started to put the aeration fan group into a restart working state. When the current downtime is less than or equal to the preset minimum downtime, the current aeration fan can be re-determined in the aeration fan group until the current downtime of the re-determined current aeration fan is less than the preset minimum downtime, and then the re-determined current aeration fan can be restarted.

[0063] This embodiment ensures safe and normal operation of the aeration fan by activating the current aeration fan when the current downtime exceeds the preset minimum downtime. This intermittent control mode effectively reduces the dissolved oxygen content of the target wastewater in the aerobic tank, ensuring normal denitrification and phosphorus release reactions in the anoxic tank. This reduces carbon source dosage and aeration fan power consumption, improving the total phosphorus and total nitrogen quality of the effluent.

[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 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 the second preset dissolved oxygen threshold, exiting the intermittent control mode and controlling the aeration fan unit in accordance with 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: 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.

[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 time of the aeration fan unit is greater than the preset restart time, detect the restart dissolved oxygen value of the target sewage. 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 that the aeration fan unit is in the restarted operating state. The restart dissolved oxygen value is the dissolved oxygen value detected when the aeration unit is in the restarted operating state. The second preset dissolved oxygen threshold may be the dissolved oxygen value of the target wastewater without excessive aeration. For example, the second preset dissolved oxygen threshold may range from 2 mg / L to 3 mg / L.

[0068] In this embodiment, to ensure the safety of the aeration fans, before determining whether the aeration fan group should switch from the restart operating state to the stop operating state, it is necessary to determine whether the restart duration of the aeration fans in the aeration fan group is greater than the minimum operating duration. If so, it is determined whether the restart duration of the aeration fan group is greater than the preset restart duration. If not, the aeration fans continue to operate in the restart operating 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 time of the aeration fan unit is longer than the preset restart time, 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 wastewater 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 operating state, in order to reduce the dissolved oxygen value in the target wastewater, the restart operating state of the aeration fan unit can be switched to the stop operating state. Then, according to the intermittent control mode, the stop operating state is switched to the restart operating state again, and the above steps are repeated. When the aeration fan unit is in the restart operating state, the newly determined restart dissolved oxygen value is less than the second preset dissolved oxygen threshold, at which point 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 : is a schematic diagram of the structure of an aeration control device provided according to an embodiment of the present invention, which 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. For details not fully described in the embodiment of the aeration control device, please refer to the embodiment of the aeration control method. Figure 4 As shown, the device includes:

[0074] The current operating frequency acquisition module 10 is used to obtain 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;

[0075] The aeration fan unit control module 11 is 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 value;

[0076] Among them, the intermittent control mode is a mode for controlling the aeration air unit to operate alternately 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 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 for determining, 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, a target surge critical frequency corresponding to the target pipe pressure of the aeration fan unit as the minimum operating frequency based on a preset correspondence between the pipe pressure and the surge critical frequency before controlling the aeration fan unit to enter the intermittent control mode;

[0079] When the operating frequency of the aeration fan unit is lower 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 air unit control module 11 includes:

[0081] an aeration fan starter module, configured to start the aeration fan unit so as to put the aeration fan unit into a restart working state when the stop working time of the aeration fan unit meets a first preset restart condition and / or when the latest water quality value of the target sewage meets a second preset restart condition;

[0082] Among them, the stop working time is the time the aeration fan unit is in the stop 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 air 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] The intermittent control mode exit submodule is used to exit the intermittent control mode and control the aeration fan unit according to the original control mode when the restart dissolved oxygen value is less than the second preset dissolved oxygen threshold;

[0087] The restart duration is 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 air 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, if 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 an intermittent control mode.

[0090] Based on any optional technical solution in the embodiment of the present invention, optionally, the aeration fan unit includes multiple aeration fans; the aeration fan starter module includes:

[0091] a current aeration fan determining unit, configured to determine a current aeration fan corresponding to a restarted 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 unit and the current dissolved oxygen value of the target sewage to be aerated by the aeration fan unit; and, 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, the aeration fan unit is controlled to operate in an intermittent control mode; since the intermittent control mode is a mode in which the aeration fan unit is controlled to operate alternately between a stop working state and a restart working state, the restart working state is a state in which the aeration fan unit operates at the lowest operating frequency. Therefore, by controlling the aeration fan unit to operate alternately between a stop working state and a restart working state, the energy waste of the aeration fan unit 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 an electronic device for implementing the aeration control method according to an embodiment of the present invention. The term "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 term "electronic device" may also represent various forms of mobile devices, such as personal digital assistants (PDAs), cellular phones, smartphones, wearable devices (e.g., helmets, glasses, watches, etc.), and other similar computing devices. The components shown herein, their connections and relationships, and their functions are provided for illustrative purposes only and are not intended to limit the implementation of the present inventions 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 the 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. Various programs and data required for the operation of the electronic device 20 can also be stored in the RAM 23. The processor 21, ROM 22 and RAM 23 are connected to each other via a bus 24. An input / output (I / O) interface 25 is also connected to the bus 24.

[0097] Multiple 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 magnetic 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 via a computer network such as the Internet and / or various telecommunication networks.

[0098] Processor 21 can be any general-purpose and / or specialized processing component with processing and computing capabilities. Some examples of processor 21 include, but are not limited to, a central processing unit (CPU), a graphics processing unit (GPU), various specialized artificial intelligence (AI) computing chips, various processors that run machine learning model algorithms, a digital signal processor (DSP), and any other suitable processor, controller, microcontroller, etc. Processor 21 executes the various methods and processes described above, such as the aeration control method.

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

[0100] Various embodiments of the systems and techniques described 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), system-on-chip systems (SOCs), programmable logic devices (CPLDs), computer hardware, firmware, software, and / or combinations thereof. These various embodiments can include being implemented in one or more computer programs that are executable and / or interpreted on a programmable system that includes 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, such that when the computer program is executed by the processor, the functions / operations specified in the flowcharts and / or block diagrams are implemented. The computer program may be executed entirely on the machine, partially on the machine, as a stand-alone software package, partially on the machine and partially on a remote machine, or entirely on a remote machine or server.

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

[0103] To provide interaction with a user, the systems and techniques described herein can 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 pointing device (e.g., a mouse or trackball) through which the user can provide input to the electronic device. Other types of devices can also be used to provide interaction with the user; for example, the feedback provided to the user can be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user can be received in any form (including acoustic input, voice input, or tactile input).

[0104] The systems and techniques described herein can be implemented in a computing system that includes back-end 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 front-end components (e.g., a user computer with a graphical user interface or 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 back-end components, middleware components, or front-end components. The components of the system can 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 clients and servers. The clients and servers are typically remote from each other and typically interact via a communication network. This client-server relationship arises through computer programs running on the respective computers, creating a client-server relationship. The server may be a cloud server, also known as a cloud computing server or cloud host. This server is a hosting product within the cloud computing service ecosystem that addresses the management difficulties and limited scalability of traditional physical hosting and VPS services.

[0106] It should be understood that the various forms of the processes shown above can be used to reorder, add, or delete steps. For example, the steps described in the present invention can be performed in parallel, sequentially, or in a different order, as long as the desired results of the technical solution of the present invention can be achieved. This is not limited herein.

[0107] The above specific embodiments do not limit the scope of protection of the present invention. Those skilled in the art will appreciate that various modifications, combinations, sub-combinations, and substitutions may be made based on design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention are intended to be included within the scope of protection of the present invention.

Claims

1. An aeration control method, characterized in that: include: Obtaining a current operating frequency of an aeration fan unit and a current dissolved oxygen value of target sewage being aerated by the aeration fan unit; wherein the aeration fan unit includes a plurality of aeration fans; 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 in which the aeration fan unit is controlled to alternately operate in a stop working state and a restart working state, wherein the restart working state is a state in which the aeration fan unit operates at the minimum operating frequency; wherein the current aeration fan corresponding to the restart working state is different from the aeration fan actually started last time; 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, before controlling the aeration fan unit to enter the intermittent control mode, the method further includes: Based on a preset correspondence between the pipe pressure and the surge critical frequency, determining a target surge critical frequency 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; The controlling the aeration air 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 into the restart working state; The stop working time is the time during which the aeration fan unit is in a stop working state.

2. The method according to claim 1, 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.

3. The method according to claim 1, characterized in that The controlling the aeration air 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 duration during which the aeration fan unit is in the restart working state.

4. The method according to claim 3, 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 a 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.

5. The method according to claim 1, wherein The starting of the aeration air unit to put the aeration air unit into the restart working state includes: Determine the current aeration fan corresponding to the restart working state; 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 into the restart working state.

6. An aeration control device, characterized in that: include: a current operating frequency acquisition module for acquiring 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; wherein the aeration fan unit includes a plurality of aeration fans; 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 in which the aeration fan unit is controlled to alternately operate in a stop working state and a restart working state, wherein the restart working state is a state in which the aeration fan unit operates at the minimum operating frequency; wherein the current aeration fan corresponding to the restart working state is different from the aeration fan actually started last time; The device further comprises: a minimum operating frequency determination module for determining, before controlling the aeration air unit to enter an intermittent control mode when the current operating frequency of the aeration air unit is the minimum operating frequency and the current dissolved oxygen value is greater than a first preset dissolved oxygen threshold, a target surge generation critical frequency corresponding to the target pipe pressure of the aeration air unit as the minimum operating frequency based on a preset correspondence between the pipe pressure and the surge generation critical frequency; wherein, when the operating frequency of the aeration air unit is less than the target surge generation critical frequency, the aeration air unit experiences surge; The aeration fan unit control module includes: an aeration fan starter module, configured to start the aeration fan group so as to put the aeration fan group into the restart working state when the stop working duration of the aeration fan group meets a first preset restart condition and / or when the latest water quality value of the target sewage meets a second preset restart condition; The stop working time is the time during which the aeration fan unit is in a stop working state.

7. 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. The computer program is executed by the at least one processor to enable the at least one processor to perform the aeration control method according to any one of claims 1 to 5.

8. 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 5 when executed.

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