Sludge discharge control system and sludge discharge control method of mechanical acceleration clarification tank

Abstract

The invention relates to the technical field of mechanical acceleration clarification tanks, and particularly provides a sludge discharge control system and a sludge discharge control method of a mechanical acceleration clarification tank. The system comprises: a data monitoring module configured to obtain a plurality of sludge discharge monitoring data of the mechanically accelerated clarification tank in a current sludge discharge control state in real time; the data processing module is configured to be used for processing the multiple pieces of sludge discharge monitoring data based on a target sludge discharge control algorithm in the multiple sludge discharge control algorithms and calculating a target sludge discharge control index; generating a target sludge discharge control signal based on the target sludge discharge control index, wherein the target sludge discharge control signal is used for indicating a target sludge discharge control state of the mechanical acceleration clarification tank; and the logic execution module is configured to respond to the target sludge discharge control signal and perform sludge discharge control on the mechanical acceleration clarification tank. Through cooperative work of a plurality of sludge discharge control algorithms, the sludge discharge control state of the mechanical acceleration clarification tank is dynamically adjusted, the effluent quality is guaranteed, and automation and intelligentization of sludge discharge control are realized.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of mechanical accelerated clarifiers, and in particular to a sludge discharge control system and method for a mechanical accelerated clarifier. BACKGROUND

[0002] A mechanical accelerated clarifier is a structure for comprehensive treatment of coagulation, reaction and sedimentation by mechanical stirring. In the operation process, sludge needs to be discharged in time and in an appropriate amount to ensure the best operation effect. Too low or too high sludge concentration is not conducive to the control of water quality of effluent.

[0003] In related technologies, the timing and duration of sludge discharge are usually determined by manual monitoring, and there is a problem of inaccurate judgment of the timing and duration of sludge discharge. SUMMARY

[0004] The present disclosure is proposed in view of the above problems. The present disclosure provides a sludge discharge control system and method for a mechanical accelerated clarifier.

[0005] According to one aspect of the present disclosure, a sludge discharge control system for a mechanical accelerated clarifier is provided, comprising a data monitoring module, a data processing module and a logic execution module which are communicatively connected; The data monitoring module is configured to acquire in real time a plurality of sludge discharge monitoring data of the mechanical accelerated clarifier in a current sludge discharge control state. The data processing module is configured to process the plurality of sludge discharge monitoring data based on a target sludge discharge control algorithm in a plurality of sludge discharge control algorithms, calculate a target sludge discharge control indicator in a plurality of sludge discharge control indicators, and generate a target sludge discharge control signal in a plurality of sludge discharge control signals based on the target sludge discharge control indicator; wherein the plurality of sludge discharge control algorithms comprises at least two sludge discharge opening algorithms and at least two sludge discharge closing algorithms, and the target sludge discharge control signal is used to indicate a target sludge discharge control state of the mechanical accelerated clarifier. The logic execution module is configured to respond to the target sludge discharge control signal and perform sludge discharge control on the mechanical accelerated clarifier to adjust the current sludge discharge control state to the target sludge discharge control state.

[0006] According to another aspect of the present disclosure, a sludge discharge control method applied to the sludge discharge control system for a mechanical accelerated clarifier provided in the example embodiments of the present disclosure is provided, the sludge discharge control system comprising a data monitoring module, a data processing module and a logic execution module which are communicatively connected; the method comprising: The data monitoring module acquires in real time a plurality of sludge discharge monitoring data of the mechanical accelerated clarifier in a current sludge discharge control state. The data processing module processes the plurality of sludge discharge monitoring data based on a target sludge discharge control algorithm in a plurality of sludge discharge control algorithms, calculates a target sludge discharge control index in a plurality of sludge discharge control indexes, generates a target sludge discharge control signal in a plurality of sludge discharge control signals based on the target sludge discharge control index; wherein the plurality of sludge discharge control algorithms includes at least two sludge discharge opening algorithms and at least two sludge discharge closing algorithms, and the target sludge discharge control signal is used to indicate a target sludge discharge control state of the mechanical accelerated clarifier. The logic execution module responds to the target sludge discharge control signal to control the sludge discharge of the mechanical accelerated clarifier to adjust the current sludge discharge control state to the target sludge discharge control state.

[0007] As will be described in detail below, according to the sludge discharge control system of the mechanical accelerated clarifier of the embodiments of the present disclosure, the data monitoring module is configured to acquire a plurality of sludge discharge monitoring data of the mechanical accelerated clarifier in a current sludge discharge control state in real time; the data processing module is configured to process the plurality of sludge discharge monitoring data based on a target sludge discharge control algorithm in a plurality of sludge discharge control algorithms, calculate a target sludge discharge control index in a plurality of sludge discharge control indexes, generate a target sludge discharge control signal in a plurality of sludge discharge control signals based on the target sludge discharge control index; wherein the plurality of sludge discharge control algorithms includes at least two sludge discharge opening algorithms and at least two sludge discharge closing algorithms, and the target sludge discharge control signal is used to indicate a target sludge discharge control state of the mechanical accelerated clarifier; the logic execution module is configured to respond to the target sludge discharge control signal to control the sludge discharge of the mechanical accelerated clarifier to adjust the current sludge discharge control state to the target sludge discharge control state, which can replace the traditional operation mode relying on manual experience, dynamically adjust the sludge discharge control state of the mechanical accelerated clarifier through the cooperation of the plurality of sludge discharge control algorithms, ensure the stable operation of the mechanical accelerated clarifier under the condition of working condition change, guarantee the water quality, realize the automation and intelligentization of sludge discharge control, and improve the sludge discharge processing efficiency and stability.

[0008] It is to be understood that both the foregoing general description and the following detailed description are exemplary and intended to provide further explanation of the subject technology. BRIEF DESCRIPTION OF DRAWINGS

[0009] The foregoing and other objects, features and advantages of the present disclosure will become more apparent from the following detailed description, which proceeds with reference to the accompanying drawings. The accompanying drawings are provided to illustrate embodiments of the present disclosure and, together with the detailed description, to provide an understanding of the present disclosure. The drawings provided are not intended to limit the present disclosure, and are provided to explain the present disclosure together with the detailed description. In the drawings, the same reference numerals generally refer to the same components or steps.

[0010] Figure 1 A structural schematic diagram of a mechanical accelerated clarifier in the related art is shown. Figure 2 A schematic diagram of an architecture of a sludge discharge control system of a mechanical accelerated clarifier is shown according to an example embodiment of the present disclosure; Figure 3 A schematic diagram of a suspended sludge layer in a clarifying zone is shown according to an example embodiment of the present disclosure; Figure 4 A schematic diagram of a settled sludge layer in a clarifying zone is shown according to an example embodiment of the present disclosure; Figure 5 A schematic diagram of a working principle of a mechanical accelerated clarifier is shown according to an example embodiment of the present disclosure; Figure 6 A schematic diagram of a calculation principle of a daily total sludge discharge estimation value is shown according to an example embodiment of the present disclosure; Figure 7 A schematic diagram of a current sludge discharge progress of a mechanical accelerated clarifier is shown according to an example embodiment of the present disclosure; Figure 8 A schematic diagram of a calculation principle of another daily total sludge discharge estimation value is shown according to an example embodiment of the present disclosure; Figure 9 A flowchart of a sludge discharge control method of a mechanical accelerated clarifier is shown according to an example embodiment of the present disclosure. DETAILED DESCRIPTION

[0011] In order to make the objectives, technical solutions and advantages of the present disclosure more apparent, the following will describe example embodiments according to the present disclosure in detail with reference to the accompanying drawings. Obviously, the described embodiments are only some of the embodiments of the present disclosure, rather than all the embodiments of the present disclosure, and it should be understood that the present disclosure is not limited to the example embodiments described herein.

[0012] It should be understood that the various steps recited in the method embodiments of the present disclosure can be executed in different orders and / or in parallel. In addition, the method embodiments can include additional steps and / or omit the execution of the steps shown. The scope of the present disclosure is not limited in this respect.

[0013] The term “comprising” and variations thereof as used herein are open-ended, that is, “including but not limited to”. The term “based on” is “based, at least in part, on”. The term “one embodiment” means “at least one embodiment”; the term “another embodiment” means “at least one additional embodiment”; the term “some embodiments” means “at least some embodiments”. Related definitions are given throughout the description. It should be noted that the concepts “first”, “second”, etc. mentioned in the present disclosure are only used to distinguish different devices, modules or units, and are not intended to limit the order or interdependence of the functions performed by these devices, modules or units.

[0014] It should be noted that the modification of "one", "multiple" mentioned in the present disclosure is illustrative but not restrictive, and those skilled in the art should understand that unless otherwise explicitly indicated in the context, it should be understood as "one or more".

[0015] The names of the messages or information exchanged between the plurality of devices in the embodiments of the present disclosure are only for illustrative purposes, and are not intended to limit the scope of the messages or information.

[0016] The mechanical accelerated clarification tank process is an important process link commonly contained in the conventional water treatment process flow of waterworks and sewage plants, i.e., the coagulation and sedimentation process link. The role of this link is to preliminarily remove suspended impurities in raw water, and the structures that can achieve this removal effect include various types of mechanical accelerated clarification tanks (such as mechanical accelerated clarification tanks, pulse mechanical accelerated clarification tanks, high-density mechanical accelerated clarification tanks, etc.). The purification principle is to make the suspended impurities in the raw water coagulate into flocs by adding chemicals for coagulation, and then obtain supernatant after sedimentation to clarify the water quality, and the flocs that are precipitated form sludge that is discharged.

[0017] Figure 1 The structural schematic diagram of the mechanical accelerated clarification tank in the related art is shown. As shown in Figure 1 During the operation of the mechanical accelerated clarification tank, the mud slurry backflow and contact reaction are completed by using the lifting action of the impeller 101 mechanical stirring. The raw water after mixing with chemicals enters the first reaction zone 103, and contacts with several times of the circulating slurry under the stirring of the impeller 101 blades, and then is lifted to the second reaction zone 102 by the impeller 101 to continue the reaction, to form larger flocs, and then enters the separation chamber through the flow guide chamber for sedimentation and separation. The clear water flows out upward through the water collecting tank, and part of the precipitated slurry backflows and mechanically mixes with the chemical raw water for reaction, and part of the slurry is concentrated and discharged from the sludge discharge port 104.

[0018] It can be seen from Figure 1 that this type of tank integrates coagulation and sedimentation, and has two basic parts of reaction zones (the first reaction zone 103 and the second reaction zone 102) and a clarification zone 105. During the operation, the floc sludge generated in the reaction zone enters the clarification zone 105 for sedimentation and separation, and the mud and water are layered, the upper clear water flows to the subsequent process link, and part of the lower sludge backflows to the reaction zone to continue to participate in the contact flocculation, and another part is discharged in a timely and quantitative manner to maintain the normal sludge concentration in the tank. The reasonable sludge concentration is a key factor for the treatment effect.

[0019] The sludge discharge operation of the mechanical accelerated clarifier is realized by a sludge discharge valve at the bottom of the tank (some tank types have multiple sludge discharge valves at different positions, which are not considered in the embodiments of the present disclosure). For this sludge discharge valve, there are only two control elements for the sludge discharge scheme decision: the sludge discharge timing and the sludge discharge duration. The "timing" needs to solve when to discharge, that is, when to open the sludge discharge valve, and the "duration" needs to solve how much to discharge at one time, that is, how long to close after the sludge discharge valve is opened.

[0020] In the mechanical accelerated clarifier process of the related art, the conventional operation mode of the mechanical accelerated clarifier is mostly of the artificial experience type. In terms of sludge discharge control, workers need to detect the sludge settling ratio in the reaction zone to indirectly understand the concentration and settling performance of the sludge, and also need to observe the clarification effect of the effluent, and comprehensively consider the water quality and quantity changes to finally grasp the sludge discharge timing. When the raw water quality changes, the water quantity changes, and the coagulation strategy changes, if the sludge discharge scheme is not adjusted in time, the effluent water quality will not meet the standard. Secondly, the detection method of the settling ratio is manual sampling, manual timing, and manual reading, and the control of parameters such as the settling ratio value, the sludge discharge frequency, and the sludge discharge duration is obtained by experience without theoretical guidance value, and the whole sludge discharge scheme decision process is greatly affected by human subjective factors.

[0021] To realize normal sludge discharge, the artificial experience type sludge discharge mode of the related art has two kinds. One is that as the flocculation body continuously generates, the sludge concentration in the tank becomes more and more concentrated, and the settling ratio value becomes larger and larger. According to experience, a settling ratio limit value is determined. When the settling ratio exceeds this experience value, the worker manually opens the sludge discharge valve. When a certain appropriate amount is discharged, the valve is closed to end the sludge discharge. The "certain appropriate amount" is usually a time estimated according to experience, such as 10 minutes. The other is that it is possible to set an "automatic operation mode", that is, to set the sludge discharge to a fixed frequency and fixed amount, such as discharging once every 2 hours and discharging for 10 minutes each time. This setting is also made according to the experience of the operation personnel.

[0022] The two methods of manual sludge removal seem to solve the timing and duration issues, but this approach is only suitable for very stable operating conditions. The reasons are as follows: First, the influent water quality and coagulant dosage of the mechanically accelerated clarifier both affect the sludge production rate. For example, the higher the suspended solids in the influent and the greater the coagulant dosage, the faster the sludge production rate. In this case, the sludge removal frequency or volume should be increased to maintain a stable sludge concentration. Second, changes in the influent flow rate of the mechanically accelerated clarifier affect the treatment load. The sludge-water stratification in the clarification zone does not occur under static settling conditions; this zone has an upward flow velocity. The sludge settling process is a dynamic equilibrium process with the upward flow velocity. Only when the sludge's settling velocity equals the upward flow velocity can the sludge be stably suspended at a certain height in the clarification zone. If the influent flow rate increases, the upward flow velocity increases, and the sludge layer at its original height will rise, leading to a deterioration in effluent quality. In this case, increasing the sludge removal frequency and volume can reduce the sludge concentration, thereby increasing the sludge settling velocity and stabilizing the sludge layer height at a suitable position. Therefore, manual sludge removal cannot adapt to all changes in operating conditions. When operating conditions change, the limit of the settling ratio needs to be adjusted, requiring manual intervention in the automatic operation mode to adjust the sludge removal frequency or volume. However, these adjustments have no theoretical reference values ​​and can only be determined based on "experience."

[0023] In reality, decisions regarding sludge discharge schemes can be based on a wealth of real-time operational data, such as sludge concentration, settling velocity, sludge layer height, and effluent turbidity. However, under the manual experience model, this data support has not yet been systematically calculated. Instead, it relies on human observation and intuition for estimation, which has many drawbacks, such as high labor costs, inaccurate control of sludge discharge volume, and untimely response to changes in water quality and quantity.

[0024] Furthermore, in the relevant literature on related technologies, the intelligent sludge removal of mechanically accelerated clarifiers requires overall decision-making on the sludge removal scheme, including decisions on both the timing and duration of sludge removal. Both "timing" and "duration" are indispensable. Existing literature provides methods that either only involve decisions on the "timing" or only involve decisions on the "duration".

[0025] Even so, the technical solutions regarding "timing" in the relevant literature have problems. For example, they rely on a single control parameter, monitoring only the settling ratio or the sludge layer height. While this may meet the requirements for stable operating conditions in the short term, it cannot meet the requirements for long-term conditions with variations in water quality and quantity. Similarly, the technical solutions regarding "duration" also have problems, such as unclear methods for determining sludge volume and a lack of detailed technical explanations.

[0026] Therefore, in order to solve the above problems, the mechanical accelerated clarifier sludge discharge control system provided by the embodiment of the present disclosure can replace the traditional operation mode relying on manual experience, dynamically adjust the sludge discharge control state of the mechanical accelerated clarifier through the cooperative work of multiple sludge discharge control algorithms, ensure the stable operation of the mechanical accelerated clarifier under the condition of working condition change, guarantee the effluent water quality, realize the automation and intelligentization of sludge discharge control, and improve the sludge discharge treatment efficiency and stability.

[0027] The two control elements of the intelligent sludge discharge of the mechanical accelerated clarifier are the sludge discharge time and the sludge discharge duration. If the two problems can be solved through real-time data calculation under any operating state, the so-called intelligent sludge discharge can be realized.

[0028] Through the analysis of the defects of manual sludge discharge, it can be known that the technical difficulty of adjusting the sludge discharge scheme lies in that the change of the working condition cannot be predicted or discovered in time by the operating personnel. For example, the water inlet of the mechanical accelerated clarifier can be natural surface water, and the water quality (such as water temperature, turbidity, pH, and algae quantity) changes quietly in the four seasons of a year, so the sludge production rate of the mechanical accelerated clarifier also changes. However, the manually set sludge discharge scheme cannot be changed in time. Only when the subjective observation of the person finds that the treatment effect is not good, the sludge discharge scheme will be intervened. Sometimes, in order to ensure the treatment effect, the operating personnel will estimate the time point of the water quality change according to experience and adjust the sludge discharge in advance. However, such estimation is extremely subjective, and how to adjust is also subjective. In general, there is a lack of theoretical guidance and data support. Such management mode obviously has limitations. Therefore, the technical problem to be solved by the embodiment of the present disclosure lies in that the set sludge discharge control algorithm must be able to calculate the sludge discharge time and the sludge discharge duration under the current working condition at any time.

[0029] Figure 2 The architecture schematic diagram of the sludge discharge control system of the mechanical accelerated clarifier provided by the exemplary embodiment of the present disclosure is shown. As shown in the figure, Figure 2 The sludge discharge control system of the mechanical accelerated clarifier includes a data monitoring module 210, a data processing module 220, and a logic execution module 230 which are communicatively connected; The data monitoring module 210 is configured to acquire multiple sludge discharge monitoring data of the mechanical accelerated clarifier in the current sludge discharge control state in real time; The data processing module 220 is configured to process the multiple sludge discharge monitoring data based on a target sludge discharge control algorithm in multiple sludge discharge control algorithms, calculate a target sludge discharge control index in multiple sludge discharge control indexes, and generate a target sludge discharge control signal in multiple sludge discharge control signals based on the target sludge discharge control index; wherein the multiple sludge discharge control algorithms include at least two sludge discharge opening algorithms and at least two sludge discharge closing algorithms, and the target sludge discharge control signal is used to indicate the target sludge discharge control state of the mechanical accelerated clarifier; The logic execution module 230 is configured to, in response to the target sludge discharge control signal, perform sludge discharge control on the mechanical accelerated clarifier to adjust the current sludge discharge control state to the target sludge discharge control state.

[0030] Specifically, the current sludge discharge control state of the mechanical accelerated clarifier described above can be a sludge discharge open state or a sludge discharge closed state. If the current sludge discharge control state is the sludge discharge closed state, the plurality of sludge discharge monitoring data can include sludge discharge open monitoring data for determining whether to adjust the sludge discharge closed state to the sludge discharge open state; if the current sludge discharge control state is the sludge discharge open state, the plurality of sludge discharge monitoring data can include sludge discharge closed monitoring data for determining whether to adjust the sludge discharge open state to the sludge discharge closed state. Table 1 shows the plurality of sludge discharge monitoring data and the experience normal value range provided by the embodiments of the present disclosure.

[0031] Table 1: Plurality of sludge discharge monitoring data and experience normal value range

[0032] Each of the plurality of sludge discharge control indexes described above can be calculated by the corresponding sludge discharge control algorithm of the plurality of sludge discharge control algorithms, that is, the target sludge discharge control index can be calculated by the target sludge discharge control algorithm. Here, the target sludge discharge control signal can be used to indicate the target sludge discharge control state of the mechanical accelerated clarifier.

[0033] The plurality of sludge discharge control algorithms described above can include at least two sludge discharge open algorithms and at least two sludge discharge closed algorithms. The sludge discharge open algorithm can be used to determine the sludge discharge start time of the mechanical accelerated clarifier; the two sludge discharge closed algorithms can be used to determine the sludge discharge closing time of the mechanical accelerated clarifier (indirectly used to determine the sludge discharge duration). Here, the specific number of sludge discharge open algorithms and sludge discharge closed algorithms can be determined according to actual needs, and the embodiments of the present disclosure do not make specific limitations thereon. The embodiments of the present disclosure perform sludge discharge control on the mechanical accelerated clarifier through the plurality of sludge discharge control algorithms, avoiding the limitations of a single algorithm or artificial experience.

[0034] In addition, when one of the sludge discharge open algorithms or the sludge discharge closed algorithms needs to be optimized or added, it only needs to be expanded in the data processing module 220 to realize the upgrading and maintenance of the sludge discharge control system, so as to ensure that the overall framework of the sludge discharge control system is not affected.

[0035] That is, in at least two sludge discharge opening algorithms, if one of them is used alone, it can complete most of the valve opening time selection, and in at least two sludge discharge closing algorithms, if one of them is used alone, it can complete the valve closing time selection except for the initial state. The embodiment of the present disclosure considers that in the process of achieving the intelligent sludge discharge target, adding an algorithm is equivalent to adding a control path, each path is associated by using the logical relationship of "or", so that the "control point" increases, the more the paths, the more the risks that can be avoided, the more conducive to the stability of the model, and the rich paths can improve the adaptability of the sludge discharge control system. Each algorithm has its own advantages in achieving the sludge discharge target, and also has a complementary effect on other parallel algorithms. For example, there is a certain failure probability of the instruments involved in each real-time data. When one path fails, another path can still achieve control. While repairing the fault manually, the sludge discharge control system does not stop calculating and can still work.

[0036] For example, in the case where the current sludge discharge control state is the sludge discharge closing state, the target sludge discharge control state of the mechanical accelerated clarifier can be adjusted to the sludge discharge opening state or the sludge discharge closing state based on the sludge discharge opening monitoring data in the plurality of sludge discharge monitoring data by at least two sludge discharge opening algorithms. The target sludge discharge control index can be calculated, and the target sludge discharge control signal in the plurality of sludge discharge control signals can be generated based on the target sludge discharge control index.

[0037] Here, the target sludge discharge control state indicated by the target sludge discharge control signal can be the sludge discharge opening state or the sludge discharge closing state. If the target sludge discharge control state is the sludge discharge opening state, the logic execution module 230 adjusts the sludge discharge closing state to the sludge discharge opening state in response to the target sludge discharge control signal. If the target sludge discharge control state is the sludge discharge closing state, the logic execution module 230 continues to maintain the sludge discharge closing state in response to the target sludge discharge control signal.

[0038] The logic execution module 230 can be used to control the opening and closing of the sludge discharge valve of the mechanical accelerated clarifier. When the sludge discharge control state of the mechanical accelerated clarifier is the sludge discharge closing state, the logic execution module 230 can be used to control the sludge discharge valve of the mechanical accelerated clarifier to remain closed. When the sludge discharge control state of the mechanical accelerated clarifier is the sludge discharge opening state, the logic execution module 230 can be used to control the sludge discharge valve of the mechanical accelerated clarifier to remain open.

[0039] Here, the purpose of separately setting the logic execution module 230 is to stabilize the overall structure of the sludge discharge control system. The program of the logic execution module 230 is only for the operation results of each algorithm, so when the number of algorithms increases or decreases or a certain algorithm is upgraded and optimized, the overall framework of the sludge discharge control system is not affected, which is conducive to the evolution and maintenance of the model.

[0040] According to the technical scheme of the example embodiment of the present disclosure, the sludge discharge control system of the mechanical accelerated clarifier comprises a data monitoring module, a data processing module and a logic execution module which are communicatively connected; the data monitoring module is configured to acquire in real time a plurality of sludge discharge monitoring data of the mechanical accelerated clarifier in a current sludge discharge control state; the data processing module is configured to process the plurality of sludge discharge monitoring data based on a target sludge discharge control algorithm in a plurality of sludge discharge control algorithms, calculate a target sludge discharge control index in a plurality of sludge discharge control indexes, and generate a target sludge discharge control signal in a plurality of sludge discharge control signals based on the target sludge discharge control index; the plurality of sludge discharge control algorithms comprise at least two sludge discharge opening algorithms and at least two sludge discharge closing algorithms, and the target sludge discharge control signal is used to indicate a target sludge discharge control state of the mechanical accelerated clarifier; the logic execution module is configured to respond to the target sludge discharge control signal and control the sludge discharge of the mechanical accelerated clarifier to adjust the current sludge discharge control state to the target sludge discharge control state, which can replace the traditional operation mode relying on manual experience, dynamically adjust the sludge discharge control state of the mechanical accelerated clarifier through the cooperative work of the plurality of sludge discharge control algorithms, ensure the stable operation of the mechanical accelerated clarifier under the condition of working condition change, guarantee the water quality, realize the automation and intelligentization of sludge discharge control, and improve the sludge discharge processing efficiency and stability.

[0041] In some embodiments, the current sludge discharge control state is a sludge discharge closing state, the target sludge discharge control state is a sludge discharge opening state, the at least two sludge discharge opening algorithms comprise a first sludge discharge opening algorithm and a second sludge discharge opening algorithm, the plurality of sludge discharge control indexes comprise a first sludge discharge opening control index and a second sludge discharge opening control index, and the plurality of sludge discharge control signals comprise a first sludge discharge opening signal and a second sludge discharge opening signal. As shown in Figure 2 The data processing module 220 comprises a sludge discharge opening program module 221. The sludge discharge opening program module 221 is configured to, in the case that the current sludge discharge control state is a sludge discharge closing state, process the plurality of sludge discharge monitoring data based on the first sludge discharge opening algorithm, calculate the first sludge discharge opening control index, and generate the first sludge discharge opening signal if the first sludge discharge opening control index meets a first preset sludge discharge opening condition. The sludge discharge opening program module 221 is configured to, in the case that the current sludge discharge control state is a sludge discharge closing state, process the plurality of sludge discharge monitoring data based on the second sludge discharge opening algorithm, calculate the second sludge discharge opening control index, and generate the second sludge discharge opening signal if the second sludge discharge opening control index meets a second preset sludge discharge opening condition.

[0042] Specifically, Figure 3 A schematic diagram of a suspended sludge layer of a clarifying zone is shown, Figure 4A schematic diagram of the accumulated sludge layer of the clarification zone provided by the exemplary embodiments of the present disclosure is shown as Figure 3 and Figure 4 As shown, the clarification zone of the mechanical accelerated clarifier has two types of sludge layers, a suspended sludge layer 301 and an accumulated sludge layer 401.

[0043] Figure 5 A schematic diagram of the working principle of the mechanical accelerated clarifier provided by the exemplary embodiments of the present disclosure is shown as Figure 5 As shown, during the operation of the mechanical accelerated clarifier, the flocculated sludge (i.e. impurity particles 501 with different particle sizes) generated in the reaction zone enters the clarification zone from the second reaction zone outlet 502 for precipitation separation. The impurity particles 501 freely sink in the static water at a sinking speed. When the impurity particles 501 are in the water with an upward flow speed, the water flow 503 will carry the particles upward. When the upward flow speed is equal to the free sinking speed of the particles, the impurity particles 501 can be stably suspended in the water to form a suspended sludge layer 504.

[0044] Under normal operating conditions, the sludge layer should be stably suspended within a certain height in the clarification zone, which can play a certain interception role on the newly entered sludge particles below. After interception, if large particles with fast settling speed are formed inside the suspended sludge layer 504, they will fall to the bottom like cloud rain to form an accumulated sludge layer. When the accumulated sludge rises close to the clear water zone, it will affect the water quality. The two types of sludge layers will exist in mixture and are not easy to be detected by the naked eye. From the above analysis, the target of sludge discharge operation has two aspects: one is to control the sludge concentration in the second reaction zone, so that the settling speed of the sludge is always not lower than the minimum upward flow speed of the clarification zone, to ensure that the suspended sludge layer does not float up; the other is to ensure that the accumulated sludge layer is not too high while ensuring that the suspended sludge layer does not float up.

[0045] Based on this, the first sludge discharge opening algorithm described above can be a sludge discharge control method based on sludge settling speed (also referred to as optimal settling algorithm), which is used to find the sludge discharge opening opportunity for the suspended sludge layer; and the second sludge discharge opening algorithm described above can be a sludge discharge control method based on sludge layer position (also referred to as optimal settling algorithm), which is used to find the sludge discharge opening opportunity for the accumulated sludge layer.

[0046] The first sludge discharge opening algorithm provided by the embodiments of the present disclosure aims to prevent the suspended sludge layer in the clarification zone from floating up by controlling the sludge settling speed (Sf) of the second reaction zone, to ensure the water quality.

[0047] The core principle is that the clarification zone of the mechanical accelerated clarifier is a continuous flow reactor with an upward flow speed. The sludge must maintain a minimum settling speed (Sf) to resist the upward force of the water flow. When the real-time monitored Sf decreases to the minimum upward flow speed of the clarification zone, the suspended sludge layer is at a critical point of instability, at which time the sludge concentration must be reduced and the settling speed must be improved by sludge discharge.

[0048] Here, the first sludge discharge opening control index can be the sludge settling velocity (Sf) of the second reaction zone, the first sludge discharge opening signal can be signal 11, and the first preset sludge discharge opening condition can be selected according to actual needs, and the embodiments of the present disclosure do not make specific limitations on this. In the embodiments of the present disclosure, the first preset sludge discharge opening condition can be that the sludge settling velocity (Sf) is less than or equal to the minimum upflow velocity (Umin).

[0049] The minimum upflow velocity Umin is not a fixed value, which can change with the influent flow (Qj) and the clarification zone structure. For a mechanical accelerated clarifier with a triangular cross section, the sedimentation area (A) at different heights is different. The embodiments of the present disclosure select the maximum sedimentation area (Amax) corresponding to the maximum allowable sludge layer height (denoted as “Emax”, usually set as the lower edge of the inclined pipe), and the calculation formula is Umin=Qj / Amax. Here, the maximum sedimentation area can be calculated by an empirical formula according to the geometric size of the pool body (such as a pool with a diameter of 29 m). The empirical formula is Amax=3.14Emax²+60.3Emax+144.2.

[0050] The control logic is that the data processing module in the sludge discharge control system can calculate the minimum upflow velocity Umin in real time, and use online devices (such as a full-automatic SS optimal settling velocity analyzer) to monitor Sf in real time. When Sf≤Umin is monitored, the sludge discharge opening program module immediately outputs the first sludge discharge opening signal (signal 11), thereby ensuring that the suspended sludge layer does not float up.

[0051] The second sludge discharge opening algorithm provided by the embodiments of the present disclosure is a parallel algorithm of the second sludge discharge opening algorithm (optimal settling algorithm), which controls the sludge discharge from another angle, directly monitors the height of the accumulated sludge layer, and prevents it from rising to the clear water zone to affect the effluent water quality.

[0052] The core principle is that at the bottom of the clarification zone, the sludge that does not participate in the circulation will continue to accumulate. Even if the suspended sludge layer is stable, the continuous rise of the accumulated sludge layer will eventually destroy the treatment effect. Therefore, a safety upper limit of the sludge layer height needs to be set.

[0053] Determination of Emax: The maximum allowable sludge layer height (Emax) is the core control parameter. In the early stage of operation of the sludge discharge control system, it can be set according to the pool structure and experience (such as 4 meters). In the later period, it can be optimized through the data model of the accumulated sludge layer height (E) and the effluent turbidity (Fc).

[0054] Here, the second mud discharge start control index can be the mud layer height (E), the second mud discharge start signal can be signal 12, and the second preset mud discharge start condition can be selected according to actual needs. This embodiment does not specifically limit this. In this embodiment, the second preset mud discharge start condition can be that the mud layer height (E) is less than or equal to the maximum allowable mud layer height (Emax).

[0055] The control logic is as follows: The sludge layer height (E) is monitored in real time by devices such as sludge level gauges. When E≥Emax is detected, the sludge discharge start-up module immediately outputs a second sludge discharge start signal (signal 12), regardless of whether Sf is higher than Umin at this time, thereby ensuring that the accumulated sludge layer does not rise.

[0056] Based on this, the embodiments of this disclosure can employ at least two different sludge discharge activation algorithms to jointly control the sludge discharge activation timing of the mechanically accelerated clarifier. By selecting an "OR" logical relationship, it can cover as many possible sludge discharge activation timings as possible without omission. Compared with the technical solutions in related technologies, the sludge discharge control model for the mechanically accelerated clarifier provided by the embodiments of this disclosure can make more comprehensive sludge discharge activation decisions, ensuring stable and reliable effluent water quality from the mechanically accelerated clarifier.

[0057] In some embodiments, the current sludge discharge control state is the sludge discharge open state, and the target sludge discharge control state is the sludge discharge closed state; like Figure 2 As shown, the data processing module 220 is also configured to obtain the sludge discharge opening duration of the mechanically accelerated clarifier when the current sludge discharge control state is the sludge discharge open state; if the sludge discharge opening duration is greater than or equal to the preset sludge discharge opening duration, a third sludge discharge closing signal is generated. The logic execution module 230 is also configured to control the sludge discharge of the mechanically accelerated clarifier in response to the third sludge discharge shutdown signal, so as to adjust the sludge discharge open state to the sludge discharge closed state.

[0058] Specifically, such as Figure 2 As shown, in this embodiment of the disclosure, a forced shutdown module can be set in the data processing module 220. Figure 2 (Not shown in the diagram), it can be configured to record the sludge discharge duration of the mechanically accelerated clarifier when the sludge discharge is in the open state, and compare this sludge discharge duration with a preset sludge discharge duration; if the sludge discharge duration is greater than or equal to the preset sludge discharge duration, a third sludge discharge shutdown signal is generated. Here, the preset sludge discharge duration can be determined according to actual needs, and this embodiment does not specifically limit it. For example, the preset sludge discharge duration can be set to 90 minutes. The third sludge discharge shutdown signal can be used to indicate that the sludge discharge control state of the mechanically accelerated clarifier is the sludge discharge shutdown state, and the third sludge discharge shutdown signal can be signal 23.

[0059] The logic execution module 230 can perform sludge discharge control on the mechanical accelerated clarifier to adjust the sludge discharge opening state to the sludge discharge closing state in response to the third sludge discharge closing signal after receiving the third sludge discharge closing signal. The logic execution module 230 performs forced closing of the valve, which can avoid serious production accidents caused by excessive sludge discharge in the tank when a monitoring failure occurs.

[0060] In some embodiments, the current sludge discharge control state is the sludge discharge opening state, the target sludge discharge control state is the sludge discharge closing state, the at least two sludge discharge closing algorithms include a first sludge discharge closing algorithm and a second sludge discharge closing algorithm, the plurality of sludge discharge control indicators include a first sludge discharge closing control indicator and a second sludge discharge closing control indicator, and the plurality of sludge discharge control signals include a first sludge discharge closing signal and a second sludge discharge closing signal. The data processing module 220 includes a sludge discharge closing program module 222. The sludge discharge closing program module 222 is configured to, when the current sludge discharge control state is the sludge discharge opening state, process the plurality of sludge discharge monitoring data based on the first sludge discharge closing algorithm to calculate the first sludge discharge closing control indicator; and generate the first sludge discharge closing signal if the first sludge discharge closing control indicator meets a first preset sludge discharge closing condition; or The sludge discharge closing program module 222 is configured to, when the current sludge discharge control state is the sludge discharge opening state, process the plurality of sludge discharge monitoring data based on the second sludge discharge closing algorithm to calculate the second sludge discharge closing control indicator; and generate the second sludge discharge closing signal if the second sludge discharge closing control indicator meets a second preset sludge discharge closing condition.

[0061] Specifically, the first sludge discharge closing algorithm described above can be a sludge discharge control method based on sludge production (also known as a material balance algorithm). By using the basic material balance principle that the sludge discharge amount should be equal to the sludge production amount, the required sludge discharge time can be calculated in real time by calculating the sludge production rate of the mechanical accelerated clarifier and monitoring the sludge discharge rate in real time. Based on the principle of conservation of solid matter, the most accurate sludge discharge control can be achieved by calculating “how much sludge is produced, how much sludge is discharged”.

[0062] Core principle: The newly added solid matter (sludge) in the mechanical accelerated clarifier within the interval between two sludge discharges is entirely derived from impurities brought in by the influent and hydrolyzed solids generated by the addition of coagulants. Therefore, the total amount of solid matter (sludge) that needs to be discharged in this sludge discharge should be equal to the total amount of solid matter (sludge) that is net increased in the tank from the last sludge discharge to the current sludge discharge.

[0063] Accumulation and comparison: from the current sludge discharge opening time, determine the cumulative sludge discharge amount (Pz) of the current sludge discharge. When the cumulative sludge discharge amount (Pz) of the current sludge discharge is greater than or equal to the cumulative sludge production amount (Mz) of the last interval, it indicates that the production and discharge are balanced, and the sludge discharge closing signal 21 is output by the sludge discharge opening program module to stop sludge discharge.

[0064] Here, the first sludge discharge closing control index can be the cumulative sludge discharge amount (Pz) of the current sludge discharge, the first sludge discharge closing signal can be signal 21, and the first preset sludge discharge closing condition can be selected according to actual needs, which is not limited in the embodiments of the present disclosure. In the embodiments of the present disclosure, the first preset sludge discharge closing condition can be that the cumulative sludge discharge amount (Pz) of the current sludge discharge is greater than or equal to the cumulative sludge production amount (Mz) of the last interval.

[0065] As shown in Figure 6 , the jth (i.e., the second) sludge discharge time is from 11:00 to 11:08, and the j-1th (i.e., the first) sludge discharge time is from 5:00 to 05:10. By comparing the cumulative sludge production amount (cumulative sludge production amount Mzj-1 of the last interval, i.e., Mz1) between 5:00 and 11:00 and the cumulative sludge discharge amount (cumulative sludge discharge amount Pzj of the jth sludge discharge, i.e., Pz2) between 11:00 and 11:08 in real time, the production and discharge are balanced when Pzj is equal to Mzj-1 (Pz2=Mz1).

[0066] The calculation of the sludge discharge stopping time needs to grasp two parameters: one is the instantaneous sludge production rate (Ms) of the mechanical accelerated clarifier, and the other is the instantaneous sludge discharge rate (Ps) of the sludge discharge pipe. Here, Ms is accurately calculated by real-time data (influent flow (Qj), turbidity (Fj), effluent turbidity (Fc), coagulant dosage (Qfe / Qal), reaction tank pH, etc.) based on the chemical equilibrium principle to produce sludge solid mass per minute. This calculation considers the influence of pH on the solubility of iron and aluminum coagulants, as well as the contribution of calcium and magnesium ions to sludge production at a certain pH, which significantly improves the accuracy compared to traditional empirical formulas. Ps=(Cp×Qp) / 3600000, Cp represents the concentration of the sludge discharge pipe, and Qp represents the flow rate of the sludge discharge pipe.

[0067] If the real-time data update frequency is t, the sludge production amount Ms×t and the sludge discharge amount Ps×t in the t period can be calculated. As shown in Figure 6As shown, taking the current (second) sludge discharge opening time 11:00 as the time node, all Msxt values in the interval before the point until the last sludge discharge opening time 05:00 are accumulated, and recorded as the cumulative sludge production of the last interval (Mzj-1). Then, the continuously updated each Psxt value after the point 11:00 is continuously accumulated, and recorded as the cumulative sludge discharge of the jth sludge discharge (Pzj). When the cumulative sludge discharge of the jth sludge discharge Pzj just reaches Mzj-1, it means that the current actual sludge discharge has reached the sludge production in the time interval from the last sludge discharge opening to the current sludge discharge opening. At this time, the first sludge discharge closing signal should be output.

[0068] Here, it can be concluded that the cumulative sludge discharge of the last interval (Mzj-1) can be calculated by the following formula:

[0069]

[0070] wherein k j represents the sludge discharge opening time of the jth sludge discharge, k j-1 represents the sludge discharge opening time of the j-1th sludge discharge, and n represents the time interval between the jth sludge discharge and the j-1th sludge discharge.

[0071] The cumulative sludge discharge of the jth sludge discharge (Pzj) can be calculated by the following formula:

[0072]

[0073] wherein g j represents the sludge discharge closing time of the jth sludge discharge, and m represents the sludge discharge duration of the jth sludge discharge.

[0074] In some embodiments, the data processing module is further configured to determine a daily total sludge discharge estimated value and a daily total sludge discharge already discharged at the current time; and generate a sludge discharge progress display signal based on the daily total sludge discharge estimated value and the daily total sludge discharge already discharged, so as to display the daily total sludge discharge estimated value and the daily total sludge discharge already discharged on the display interface.

[0075] Specifically, as a further continuation of the material balance algorithm, the embodiments of the present disclosure take the time node of 0:00-23:59 every day as a period, calculate a daily total sludge discharge estimated value (MR) and a daily total sludge discharge already discharged (MR) according to real-time data, generate a sludge discharge progress display signal based on the daily total sludge discharge estimated value and the daily total sludge discharge already discharged, so as to display the current sludge discharge progress of the mechanical accelerated clarifier in the form of a progress bar according to the actual sludge discharge on the display interface of the terminal, Figure 7 Figure 7 ​A schematic diagram of the current sludge discharge progress of a mechanically accelerated clarifier provided in an exemplary embodiment of this disclosure is shown.

[0076] Using the time node from 00:00 to 23:59 of the day as the period, and using Msi at time i as the dividing point, the calculation method consists of the cumulative sludge discharge volume (Pz) or the sludge production volume Mz of each discharge that has been calculated since 0:00, and the estimated value of Mz or Ms. The first type, such as Figure 6 As shown, the formula for calculating the estimated daily sludge discharge can be:

[0077] Among them, Ms i This represents the sludge production rate at time i, where i represents the cumulative number of minutes of operation for that day. Pzj represents the total amount of sludge discharged at time i, Pzj represents the cumulative amount of sludge discharged at time j, j is greater than or equal to 1 and less than or equal to J, and J represents the number of times sludge was discharged at time i.

[0078] like Figure 6 As shown, taking the time node from 00:00 to 23:59 of the day as the cycle, each occurrence of Pz is incremented once. The formula for calculating the total daily sludge discharge at time i can be:

[0079] Wherein, Pz1 represents the cumulative amount of sludge discharged in the first sludge discharge, Pz2 represents the cumulative amount of sludge discharged in the second sludge discharge, Pz3 represents the cumulative amount of sludge discharged in the third sludge discharge, and PzJ represents the cumulative amount of sludge discharged in the Jth sludge discharge.

[0080] Here, if no sludge discharge is performed at time i, then J equals the total number of sludge discharges. In this case, PzJ represents the cumulative sludge discharge amount up to the last sludge discharge at time i. If sludge discharge is in progress at time i, then J represents the current number of sludge discharges, and its value is equal to the total number of sludge discharges plus 1. In this case, PzJ represents the cumulative sludge discharge amount of the current number of sludge discharges.

[0081] The second type, Figure 8 This illustration shows a calculation principle diagram of another estimated daily sludge discharge amount provided by an exemplary embodiment of this disclosure, such as... Figure 8 As shown, the formula for calculating the estimated daily sludge discharge is:

[0082] Where MR represents the estimated total daily sludge discharge, in kilograms per day; i represents the cumulative operating minutes for the day; Mzj represents the cumulative sludge production in the previous interval before the (j+1)th sludge discharge, where j is greater than or equal to 1 and less than or equal to J, J represents the number of sludge discharges at time i, and Msi indicates the sludge production rate at the i-th moment, with the unit of gram per minute.

[0083] According to different actual operation conditions and different data acquisition equipment precision, the accuracy of the two calculation results of the daily sludge discharge total amount estimated value is different, and the optimal one is selected according to actual needs.

[0084] The disclosure embodiment is provided: if abnormal data occurs during program execution and causes interruption of calculation, MR, is no longer calculated, but other open and closed valve programs are still calculated, and MR, is accumulated again after 00:00.

[0085] The above-mentioned second sludge discharge closing algorithm can be a sludge discharge control method based on sludge concentration (also referred to as a minimum concentration algorithm), which selects the time to close the sludge discharge valve by monitoring the sludge concentration of the mechanical accelerated clarifier reaction zone in real time and controlling a certain minimum reaction zone concentration limit (i.e., the lower limit of the sludge concentration) to provide a concentration safety bottom line for the sludge discharge control system, so as to prevent the reaction zone sludge concentration from being too low due to excessive sludge discharge and damage the contact flocculation effect.

[0086] Core principle: there is a lower limit of the sludge concentration (Clo) for the reaction zone sludge concentration Cf. Below this value, the sludge changes from crowded settling to dispersed settling, the flocculation structure is loose, the interception effect is poor, and small particles are easily taken out, resulting in deterioration of the effluent quality.

[0087] Determination of the lower limit of the reaction zone sludge concentration (Clo): when the sludge discharge control system is first operated, the sludge concentration interval with the best settling velocity can be found through a settling experiment, and a conservative initial Clo value can be set according to experience. After the sludge discharge control system is operated, data models are established by continuously collecting Cp, CF, Fc, Qj and other data, and the Clo value is dynamically optimized and calibrated.

[0088] Control logic: during the sludge discharge process, the current sludge concentration (Cf) of the sludge discharge pipe is monitored in real time. When Cf≤Clo is monitored, it indicates that the reaction zone concentration is too low, and the algorithm immediately outputs a stop sludge discharge signal (signal 22). This path can provide key protection, especially when the system first discharges sludge and the material balance algorithm has no historical data.

[0089] Here, the second sludge discharge closing control index can be the current reaction zone sludge concentration (Cf), the second sludge discharge closing signal can be signal 22, and the second preset sludge discharge closing condition can be selected according to actual needs, which is not limited in the disclosure embodiment. In the disclosure embodiment, the second preset sludge discharge closing condition can be that the current reaction zone sludge concentration (Cf) is less than or equal to the lower limit of the reaction zone sludge concentration (Clo).

[0090] Based on this, the disclosed embodiments can jointly control the sludge discharge closing timing of the mechanical accelerated clarifier by using at least two different sludge discharge closing algorithms with the logical relationship of "or", and can provide the timing of closing the sludge discharge valve and the estimation of the total daily sludge discharge amount by the first sludge discharge closing algorithm (material balance algorithm), thereby providing the indication of the sludge discharge progress and providing an efficient and user-friendly management platform for the manager. The second sludge discharge closing algorithm (minimum concentration algorithm) can ensure timely valve closing, so that the sludge concentration in the reaction zone is always not lower than the minimum concentration. Moreover, the number of sludge discharge closing algorithms can be increased or optimized according to actual needs, so as to cover all possible sludge discharge closing timings as much as possible without omission.

[0091] As known from the foregoing, the disclosed embodiments can convert the sludge discharge control logic of the mechanical accelerated clarifier into four algorithms: ① the best settling algorithm, which needs to monitor the settling velocity Sf of the suspended sludge layer and give a real-time changing limit; ② the sludge layer height algorithm, which needs to monitor the height E of the accumulated sludge layer and give a limit; ③ the material balance algorithm, which needs to calculate the cumulative values Mz and Pz of the sludge production and the actual sludge discharge in two different time periods before and after the opening of the sludge discharge valve and compare them; and ④ the minimum concentration algorithm, which needs to give a setting scheme of the initial sludge discharge amount. The above four algorithms can independently output their respective calculation results, which are respectively denoted as signal 11, signal 12, signal 21 and signal 22.

[0092] The function of the logic execution module is to uniformly call the above four output signals for logic setting. When receiving signal 11 or signal 12, the sludge discharge valve is opened, and the logical relationship is "or". When receiving signal 21 or signal 22, the sludge discharge valve is closed, and the logical relationship is also "or".

[0093] Based on this, the technical solution provided by the disclosed embodiments aims to provide a precise technical solution based on real-time data for the sludge discharge of the mechanical accelerated clarifier, which can cope with various changes in working conditions during the long running process of the mechanical accelerated clarifier, so as to make it run stably for a long time without relying on manual experience. When calculating the two key control elements of the sludge discharge timing and the sludge discharge duration, the sludge discharge control system needs to have multiple control paths to ensure the stability and effectiveness of the entire intelligent sludge discharge algorithm. Different control paths are realized by different control parameters and corresponding algorithm modules. The disclosed embodiments provide four main sludge discharge control algorithms: the best settling algorithm, the sludge layer height algorithm, the material balance algorithm and the minimum concentration algorithm. The first two algorithms solve the problem of sludge discharge timing, and the last two algorithms solve the problem of sludge discharge duration.

[0094] In some embodiments, as Figure 2As shown, the data processing module 220 is also configured to perform anomaly detection on the plurality of sludge discharge monitoring data; if there is abnormal sludge discharge monitoring data in the plurality of sludge discharge monitoring data, the plurality of sludge discharge monitoring data is repaired, and the plurality of sludge discharge monitoring data is updated to the repaired plurality of sludge discharge monitoring data.

[0095] Specifically, as shown in the data processing module 220 of the present embodiment, an anomaly detection and repair module (not shown in the figure) can be configured to perform anomaly detection and repair on the sludge discharge monitoring data. Figure 2 Figure 2

[0096] After all the sludge discharge monitoring data is collected by the programmable logic controller (PLC), it is synchronously distributed to the user interface (UI) display page and the background database. The collection parameters in the background database are sequentially stored according to the collection time stamp (accurate to seconds). Each sludge discharge monitoring data record contains the name of the collected sludge discharge monitoring data, the collection value, and the collection time stamp, forming a time series data set with traceable time.

[0097] (1) Abnormal data identification rule: For the real-time collected parameters, i.e., the sludge discharge monitoring data (denoted as x i , i represents the current collection time stamp), whether it is abnormal or potentially abnormal data is determined by the following two sets of rules in parallel: Rule 1: Experience range verification.

[0098] It is applicable to the sludge discharge monitoring data in Table 1 “allow step jump value, only judge range”.

[0099] If x i is within its corresponding experience normal value range, it is determined to be normal data, which is directly distributed to the UI interface for display and written into the database for storage; If x i is outside the experience normal value range (including higher than the upper limit or lower than the lower limit), it is determined to be abnormal data, triggering the data repair mechanism.

[0100] Rule 2: Step jump value amplitude dynamic trend verification.

[0101] It is applicable to the sludge discharge monitoring data in Table 1 “judge step jump value amplitude & judge range”.

[0102] For the second type of parameters that do not allow step jump value and need to be judged by step jump value amplitude, the change rate of the adjacent two sludge discharge monitoring data is calculated. If the sludge discharge monitoring data x i ​​the sludge monitoring data collected at the previous time, i.e., the i-1 time i-1 If the deviation between the sludge monitoring data collected at the previous time, i.e., the i-1 time

[0103] (2) Simulation data generation and switching.

[0104] For the sludge monitoring data marked as "abnormal" or "potential abnormal", the preprocessing program generates simulation data in real time and synchronously distributes it to the UI interface display and the background database. For "abnormal" or "potential abnormal" data, simulation data is generated through two sets of repair mechanisms respectively.

[0105] ① For the x i determined as "abnormal" data (out of the experience range), the "historical trend weighted mean method" is used for repair, and the specific steps are as follows: Step 1: Based on the time stamp, the historical data sequence of the sludge monitoring data is retrieved from the database, and the normal data is retrieved in reverse order of time (from t-1 time back); Step 2: Continue to retrieve until 10 consecutive historical data sequences (denoted as x 10 1, x2,..., x Step 3: Calculate the mean value according to the time weight (the closer the data, the higher the weight), and take the weight of the last 5 normal historical data as 0.7 and the weight of the remaining 5 normal historical data as 0.3, the formula is as follows:

[0106] Step 4: If the actual retrieval of normal data is less than 10 (assuming that there are only p normal data on the day, p<10), then the formula is adjusted as follows:

[0107] Where p represents the number of normal data in the historical data sequence, q represents the number of recent normal data in the historical data sequence, and w1 and w2 represent the weight coefficients, the specific values of which are selected according to actual needs, which are not specifically limited here.

[0108] ② For the x i determined as "potential abnormal" data (in the experience range but with abnormal trend), the historical data sequence of the sludge monitoring data is also retrieved from the database based on the time stamp, and 10 historical data in the experience normal value range are continuously retrieved, and the arithmetic mean of the 10 normal data is calculated : ​

[0109] The UI interface and algorithm calling process are as follows: The "abnormal" or "potential abnormal" data is replaced by the normal data As simulation data, the abnormal data x at the i-th moment is replaced by the normal data i In the UI interface "simulation data" display box, the generated simulation value is displayed in real time, and the data is marked as "simulation value" in the database, while the original abnormal value and simulation data (for later tracing) are recorded.

[0110] If 10 normal data cannot be obtained after 8 hours of continuous retrieval, the system alarm is triggered, prompting manual verification of the sensor or data transmission link, and the last normal data is temporarily used to replace x i .

[0111] The preprocessing program sends a switching signal to the material balance algorithm module: when the 6 key parameters related to the material balance algorithm are "normal", the algorithm calculates the original data; when they are "abnormal" or "potential abnormal", the simulation data is automatically switched to participate in the calculation.

[0112] The normal value experience range and step jump value amplitude involved in the present preprocessing scheme are the normal value boundaries obtained based on the statistical law of the existing running data, and with the increase of the data sample amount collected by the intelligent sludge discharge operation, the normal value range and step jump value amplitude will be dynamically updated according to the related time series prediction model (such as Transformer).

[0113] Based on this, the preprocessing of the sludge discharge monitoring data in the embodiment of the present disclosure is a simple and efficient preprocessing method set according to the characteristics of the sludge discharge control system. Without using large data models, the preprocessing method can save computing power, improve response speed, increase the convenience and possibility of popularization and use.

[0114] The basic architecture design of the sludge discharge control system of the mechanical accelerated clarifier provided in the embodiments of the present disclosure is three modules: a data monitoring module, a data processing module, and a logic execution module. The data processing module includes a sludge discharge opening program module and a sludge discharge opening program module, and contains 4 main sludge discharge control algorithms, logic execution conditions (4 sludge discharge control signals, including signal 11, signal 12, signal 21, and signal 22), and additional conditions (a third sludge discharge closing signal, such as signal 23, is generated when the sludge discharge opening duration is greater than the preset sludge discharge opening duration). The multiple sludge discharge control algorithms in the sludge discharge control system are a set of sludge discharge timing and duration calculation methods that can replace manual experience, which are developed based on real-time data, sedimentation principles, and chemical calculations, have logical connections, and are suitable for the operation mode of the traditional mechanical accelerated clarifier. The sludge discharge control system solves the sludge discharge timing problem by collecting real-time operation data of the mechanical accelerated clarifier, establishing control indicators such as optimal settling state and sludge layer height, and solves the sludge discharge duration problem by establishing indicators such as solid material balance relationship and minimum sludge discharge concentration. Finally, the sludge discharge control system realizes program-controlled operation, so that the mechanical accelerated clarifier can perform independent and intelligent sludge discharge operation without manual experience.

[0115] Moreover, each sludge discharge control algorithm is an independent path that can determine the timing of opening or closing the valve. The logic execution module is responsible for calling the output signals of the sludge discharge opening program module and the sludge discharge opening program module, setting the opening and closing of the valve according to the logic, and thus performing the sludge discharge operation. The sludge discharge control system obtained according to this architecture can master the sludge discharge timing and duration under any operating condition, can make the mechanical accelerated clarifier run stably and continuously, the algorithms are independent of each other, and the overall framework and logic of the sludge discharge control system are not affected by the optimization and upgrading of the parameters and algorithms in the algorithms.

[0116] The embodiments of the present disclosure also provide a sludge discharge control method of a mechanical accelerated clarifier, which is applied to the sludge discharge control system of the mechanical accelerated clarifier provided in the embodiments of the present disclosure. The sludge discharge control system of the mechanical accelerated clarifier includes a data monitoring module, a data processing module, and a logic execution module which are communicatively connected.

[0117] Figure 9 A flowchart of the sludge discharge control method of the mechanical accelerated clarifier provided in the exemplary embodiments of the present disclosure is shown in FIG. 1. As shown in FIG. 1, the sludge discharge control method of the mechanical accelerated clarifier includes the following steps. Figure 9 S901, the data monitoring module acquires multiple sludge discharge monitoring data of the mechanical accelerated clarifier in a current sludge discharge control state in real time. ​S902, the data processing module processes the plurality of sludge discharge monitoring data based on a target sludge discharge control algorithm in the plurality of sludge discharge control algorithms, calculates a target sludge discharge control index in the plurality of sludge discharge control indexes; generates a target sludge discharge control signal in the plurality of sludge discharge control signals based on the target sludge discharge control index; wherein the plurality of sludge discharge control algorithms includes at least two sludge discharge opening algorithms and at least two sludge discharge closing algorithms, and the target sludge discharge control signal is used to indicate a target sludge discharge control state of the mechanical accelerated clarifier; S903, the logic execution module responds to the target sludge discharge control signal to control the sludge discharge of the mechanical accelerated clarifier to adjust the current sludge discharge control state to the target sludge discharge control state.

[0118] Here, for details, see the related content of the sludge discharge control system of the mechanical accelerated clarifier in the foregoing, which will not be repeated here.

[0119] In some embodiments, the current sludge discharge control state is a sludge discharge closing state, the target sludge discharge control state is a sludge discharge opening state, the at least two sludge discharge opening algorithms include a first sludge discharge opening algorithm and a second sludge discharge opening algorithm, the plurality of sludge discharge control indexes include a first sludge discharge opening control index and a second sludge discharge opening control index, and the plurality of sludge discharge control signals include a first sludge discharge opening signal and a second sludge discharge opening signal; The data processing module includes a sludge discharge opening program module; and the method further includes: The sludge discharge opening program module processes the plurality of sludge discharge monitoring data based on the first sludge discharge opening algorithm to calculate the first sludge discharge opening control index when the current sludge discharge control state is the sludge discharge closing state; and generates the first sludge discharge opening signal if the first sludge discharge opening control index meets a first preset sludge discharge opening condition; or, The sludge discharge opening program module processes the plurality of sludge discharge monitoring data based on the second sludge discharge opening algorithm to calculate the second sludge discharge opening control index when the current sludge discharge control state is the sludge discharge closing state; and generates the second sludge discharge opening signal if the second sludge discharge opening control index meets a second preset sludge discharge opening condition.

[0120] Here, for details, see the related content of the sludge discharge control system of the mechanical accelerated clarifier in the foregoing, which will not be repeated here.

[0121] In some embodiments, the current sludge discharge control state is a sludge discharge opening state, the target sludge discharge control state is a sludge discharge closing state, the at least two sludge discharge closing algorithms include a first sludge discharge closing algorithm and a second sludge discharge closing algorithm, the plurality of sludge discharge control indexes include a first sludge discharge closing control index and a second sludge discharge closing control index, and the plurality of sludge discharge control signals include a first sludge discharge closing signal and a second sludge discharge closing signal; The data processing module includes a sludge discharge closing program module; and the method further includes: The sludge discharge closing procedure module, in a case where the current sludge discharge control state is a sludge discharge opening state, processes a plurality of sludge discharge monitoring data based on a first sludge discharge closing algorithm, calculates a first sludge discharge closing control index, and generates a first sludge discharge closing signal if the first sludge discharge closing control index meets a first preset sludge discharge closing condition. The sludge discharge closing procedure module, in a case where the current sludge discharge control state is a sludge discharge opening state, processes a plurality of sludge discharge monitoring data based on a second sludge discharge closing algorithm, calculates a second sludge discharge closing control index, and generates a second sludge discharge closing signal if the second sludge discharge closing control index meets a second preset sludge discharge closing condition.

[0122] Here, for details, refer to the related content of the sludge discharge control system of the mechanical accelerated clarifier in the foregoing, which will not be repeated here.

[0123] In some embodiments, the current sludge discharge control state is a sludge discharge opening state, and the target sludge discharge control state is a sludge discharge closing state. The method further includes: The data processing module, in a case where the current sludge discharge control state is a sludge discharge opening state, acquires a sludge discharge opening duration of the mechanical accelerated clarifier, and generates a third sludge discharge closing signal if the sludge discharge opening duration is greater than or equal to a preset sludge discharge opening duration. The logic execution module, in response to the third sludge discharge closing signal, performs sludge discharge control on the mechanical accelerated clarifier to adjust the sludge discharge opening state to a sludge discharge closing state.

[0124] Here, for details, refer to the related content of the sludge discharge control system of the mechanical accelerated clarifier in the foregoing, which will not be repeated here.

[0125] In some embodiments, the method further includes: The data processing module determines a daily sludge discharge total amount estimation value and a daily sludge discharge total amount already discharged at a current time, and generates a sludge discharge progress display signal based on the daily sludge discharge total amount estimation value and the daily sludge discharge total amount already discharged to display the daily sludge discharge total amount estimation value and the daily sludge discharge total amount already discharged on a display interface. The calculation formula of the daily sludge discharge total amount estimation value is:

[0126]

[0127] MR represents the daily sludge discharge total amount estimation value, and the unit is kg / day; i represents the cumulative running minute number of the day. Pzj represents the cumulative sludge discharge amount of the jth sludge discharge, j is greater than or equal to 1 and less than or equal to J, J represents the number of sludge discharges at the ith moment, Pz1 represents the cumulative sludge discharge amount of the 1st sludge discharge, Pz2 represents the cumulative sludge discharge amount of the 2nd sludge discharge, Pz3 represents the cumulative sludge discharge amount of the 3rd sludge discharge, and PzJ represents the cumulative sludge discharge amount of the Jth sludge discharge, Ms i Pz represents the sludge production rate at the ith moment, and the unit is gram / minute, or, The calculation formula of the daily sludge discharge total amount estimated value is as follows:

[0128] MR represents the daily sludge discharge total amount estimated value, the unit is kilogram / day, i represents the cumulative running minute number of the day, Mzj represents the cumulative sludge production amount of the j+1th sludge discharge in the last interval, j is greater than or equal to 1 and less than or equal to J, J represents the number of sludge discharges at the ith moment, and Ms i Pz represents the sludge production rate at the ith moment, and the unit is gram / minute.

[0129] In some embodiments, the method further comprises: The data processing module performs anomaly detection on the plurality of sludge discharge monitoring data; if there is an abnormal sludge discharge monitoring data in the plurality of sludge discharge monitoring data, the plurality of sludge discharge monitoring data is repaired, and the plurality of sludge discharge monitoring data is updated to the repaired plurality of sludge discharge monitoring data.

[0130] Here, for details, see the related content of the sludge discharge control system of the mechanical accelerated clarifier in the foregoing, which will not be repeated here.

[0131] The above description is only some embodiments of the present disclosure and an explanation of the technical principles applied. Those skilled in the art should understand that the disclosure range involved in the present disclosure is not limited to the technical solutions formed by the specific combinations of the above technical features, and should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the above disclosed concept. For example, the technical solutions formed by mutually replacing the above features and the technical features disclosed in the present disclosure (but not limited to) having similar functions.

[0132] Although some specific embodiments of the present disclosure have been described in detail by examples, those skilled in the art should understand that the above examples are only for illustration, not for limiting the scope of the present disclosure. Those skilled in the art should understand that the above embodiments can be modified without departing from the scope and spirit of the present disclosure. The scope of the present disclosure is defined by the appended claims.

Claims

1. A sludge discharge control system for a mechanically accelerated clarifier, characterized in that, It includes a data monitoring module, a data processing module, and a logic execution module for communication connections; The data monitoring module is configured to acquire multiple sludge discharge monitoring data of the mechanically accelerated clarifier in the current sludge discharge control state in real time. The data processing module is configured to process the multiple sludge discharge monitoring data based on a target sludge discharge control algorithm among multiple sludge discharge control algorithms, calculate a target sludge discharge control index among multiple sludge discharge control indicators, and generate a target sludge discharge control signal among multiple sludge discharge control signals based on the target sludge discharge control index; wherein, the multiple sludge discharge control algorithms include at least two sludge discharge start algorithms and at least two sludge discharge stop algorithms, and the target sludge discharge control signal is used to indicate the target sludge discharge control status of the mechanically accelerated clarifier. The logic execution module is configured to control the sludge discharge of the mechanically accelerated clarifier in response to the target sludge discharge control signal, so as to adjust the current sludge discharge control state to the target sludge discharge control state.

2. The system as described in claim 1, characterized in that, The current sludge discharge control state is the sludge discharge closed state, the target sludge discharge control state is the sludge discharge open state, the at least two sludge discharge open algorithms include a first sludge discharge open algorithm and a second sludge discharge open algorithm, the multiple sludge discharge control indicators include a first sludge discharge open control indicator and a second sludge discharge open control indicator, and the multiple sludge discharge control signals include a first sludge discharge open signal and a second sludge discharge open signal. The data processing module includes a sludge discharge start-up program module; The sludge discharge start-up program module is configured to process the plurality of sludge discharge monitoring data based on the first sludge discharge start-up algorithm when the current sludge discharge control state is the sludge discharge closed state, and calculate the first sludge discharge start-up control index; if the first sludge discharge start-up control index meets the first preset sludge discharge start-up condition, then generate the first sludge discharge start-up signal. or, The sludge discharge start-up program module is configured to process the plurality of sludge discharge monitoring data based on the second sludge discharge start-up algorithm when the current sludge discharge control state is the sludge discharge closed state, and calculate the second sludge discharge start-up control index; if the second sludge discharge start-up control index meets the second preset sludge discharge start-up condition, then generate the second sludge discharge start-up signal.

3. The system as described in claim 1, characterized in that, The current sludge discharge control state is the sludge discharge open state, the target sludge discharge control state is the sludge discharge closed state, the at least two sludge discharge closed algorithms include a first sludge discharge closed algorithm and a second sludge discharge closed algorithm, the multiple sludge discharge control indicators include a first sludge discharge closed control indicator and a second sludge discharge closed control indicator, and the multiple sludge discharge control signals include a first sludge discharge closed signal and a second sludge discharge closed signal. The data processing module includes a sludge discharge shutdown procedure module; The sludge discharge shutdown procedure module is configured to, when the current sludge discharge control state is the sludge discharge open state, process the plurality of sludge discharge monitoring data based on the first sludge discharge shutdown algorithm to calculate the first sludge discharge shutdown control index; if the first sludge discharge shutdown control index meets the first preset sludge discharge shutdown condition, then generate the first sludge discharge shutdown signal; or, The sludge discharge shutdown program module is configured to process the plurality of sludge discharge monitoring data based on the second sludge discharge shutdown algorithm and calculate the second sludge discharge shutdown control index when the current sludge discharge control state is the sludge discharge open state. If the second sludge discharge shutdown control index meets the second preset sludge discharge shutdown condition, then the second sludge discharge shutdown signal is generated.

4. The system as described in claim 1, characterized in that, The current sludge discharge control state is the sludge discharge on state, and the target sludge discharge control state is the sludge discharge off state; The data processing module is also configured to obtain the sludge discharge start-up duration of the mechanically accelerated clarifier when the current sludge discharge control state is the sludge discharge start-up state; if the sludge discharge start-up duration is greater than or equal to the preset sludge discharge start-up duration, then generate a third sludge discharge shutdown signal. The logic execution module is also configured to control the sludge discharge of the mechanically accelerated clarifier in response to the third sludge discharge shutdown signal, so as to adjust the sludge discharge open state to the sludge discharge closed state.

5. The system as described in claim 1, characterized in that, The data processing module is also configured to determine the estimated daily sludge discharge amount and the daily sludge discharge amount at the current moment; and to generate a sludge discharge progress display signal based on the estimated daily sludge discharge amount and the daily sludge discharge amount to display the estimated daily sludge discharge amount and the daily sludge discharge amount on the display interface. The formula for calculating the estimated daily sludge discharge is as follows: Wherein, MR represents the estimated total daily sludge discharge, in kilograms per day; i represents the cumulative number of minutes of operation on that day; Pzj represents the total amount of sludge discharged at time i, in grams; Pzj represents the cumulative amount of sludge discharged in the j-th discharge, where j is greater than or equal to 1 and less than or equal to J, and J represents the number of discharges at time i; Pz1 represents the cumulative amount of sludge discharged in the first discharge; Pz2 represents the cumulative amount of sludge discharged in the second discharge; Pz3 represents the cumulative amount of sludge discharged in the third discharge; PzJ represents the cumulative amount of sludge discharged in the j-th discharge; Ms i This represents the sludge production rate at time i, expressed in grams per minute; or, The formula for calculating the estimated daily sludge discharge is as follows: Where MR represents the estimated total daily sludge discharge, in kilograms per day; i represents the cumulative operating minutes for the day; Mzj represents the cumulative sludge production in the previous interval before the (j+1)th sludge discharge, where j is greater than or equal to 1 and less than or equal to J, and J represents the number of sludge discharges at time i; Ms i This represents the sludge production rate at time i, expressed in grams per minute.

6. The system as described in any one of claims 1 to 5, characterized in that, The data processing module is also configured to perform anomaly detection on the plurality of sludge discharge monitoring data; if there is abnormal sludge discharge monitoring data among the plurality of sludge discharge monitoring data, the plurality of sludge discharge monitoring data is repaired and updated to the repaired plurality of sludge discharge monitoring data.

7. A sludge discharge control method applied to the sludge discharge control system of the mechanically accelerated clarifier according to any one of claims 1 to 6, characterized in that, The sludge discharge control system of the mechanically accelerated clarifier includes a data monitoring module, a data processing module, and a logic execution module connected by communication; the method includes: The data monitoring module acquires multiple sludge discharge monitoring data in real time under the current sludge discharge control state of the mechanically accelerated clarifier. The data processing module processes the multiple sludge discharge monitoring data based on the target sludge discharge control algorithm among multiple sludge discharge control algorithms, calculates the target sludge discharge control index among multiple sludge discharge control indicators, and generates the target sludge discharge control signal among multiple sludge discharge control signals based on the target sludge discharge control index; wherein, the multiple sludge discharge control algorithms include at least two sludge discharge start algorithms and at least two sludge discharge stop algorithms, and the target sludge discharge control signal is used to indicate the target sludge discharge control status of the mechanically accelerated clarifier. The logic execution module responds to the target sludge discharge control signal and performs sludge discharge control on the mechanically accelerated clarifier to adjust the current sludge discharge control state to the target sludge discharge control state.

8. The method as described in claim 7, characterized in that, The current sludge discharge control state is the sludge discharge closed state, the target sludge discharge control state is the sludge discharge open state, the at least two sludge discharge open algorithms include a first sludge discharge open algorithm and a second sludge discharge open algorithm, the multiple sludge discharge control indicators include a first sludge discharge open control indicator and a second sludge discharge open control indicator, and the multiple sludge discharge control signals include a first sludge discharge open signal and a second sludge discharge open signal. The data processing module includes a sludge discharge initiation program module; the method further includes: When the current sludge discharge control state is the sludge discharge closed state, the sludge discharge start-up module processes the multiple sludge discharge monitoring data based on the first sludge discharge start-up algorithm to calculate the first sludge discharge start-up control index; if the first sludge discharge start-up control index meets the first preset sludge discharge start-up condition, then the first sludge discharge start-up signal is generated; or, When the current sludge discharge control state is the sludge discharge closed state, the sludge discharge start-up program module processes the multiple sludge discharge monitoring data based on the second sludge discharge start-up algorithm to calculate the second sludge discharge start-up control index; if the second sludge discharge start-up control index meets the second preset sludge discharge start-up condition, then the second sludge discharge start-up signal is generated.

9. The method as described in claim 7, characterized in that, The current sludge discharge control state is the sludge discharge open state, the target sludge discharge control state is the sludge discharge closed state, the at least two sludge discharge closed algorithms include a first sludge discharge closed algorithm and a second sludge discharge closed algorithm, the multiple sludge discharge control indicators include a first sludge discharge closed control indicator and a second sludge discharge closed control indicator, and the multiple sludge discharge control signals include a first sludge discharge closed signal and a second sludge discharge closed signal. The data processing module includes a sludge discharge shutdown procedure module; the method further includes: When the current sludge discharge control state is the sludge discharge open state, the sludge discharge shutdown procedure module processes the multiple sludge discharge monitoring data based on the first sludge discharge shutdown algorithm to calculate the first sludge discharge shutdown control index; if the first sludge discharge shutdown control index meets the first preset sludge discharge shutdown condition, then the first sludge discharge shutdown signal is generated; or, When the current sludge discharge control state is the sludge discharge open state, the sludge discharge shut-off program module processes the multiple sludge discharge monitoring data based on the second sludge discharge shut-off algorithm to calculate the second sludge discharge shut-off control index; if the second sludge discharge shut-off control index meets the second preset sludge discharge shut-off condition, then the second sludge discharge shut-off signal is generated.

10. The method as described in claim 7, characterized in that, The current sludge discharge control state is the sludge discharge on state, and the target sludge discharge control state is the sludge discharge off state; the method further includes: When the current sludge discharge control state is sludge discharge open state, the data processing module obtains the sludge discharge open duration of the mechanically accelerated clarifier; if the sludge discharge open duration is greater than or equal to the preset sludge discharge open duration, a third sludge discharge close signal is generated. In response to the third sludge discharge shutdown signal, the logic execution module controls the sludge discharge of the mechanically accelerated clarifier to change the sludge discharge open state to the sludge discharge closed state.

11. The method as described in claim 7, characterized in that, The method further includes: The data processing module determines the estimated daily sludge discharge volume and the current daily sludge discharge volume; based on the estimated daily sludge discharge volume and the current daily sludge discharge volume, it generates a sludge discharge progress display signal to display the estimated daily sludge discharge volume and the current daily sludge discharge volume on the display interface. The formula for calculating the estimated daily sludge discharge is as follows: Wherein, MR represents the estimated total daily sludge discharge, in kilograms per day; i represents the cumulative number of minutes of operation on that day; Pzj represents the total amount of sludge discharged at time i, in grams; Pzj represents the cumulative amount of sludge discharged in the j-th discharge, where j is greater than or equal to 1 and less than or equal to J, and J represents the number of discharges at time i; Pz1 represents the cumulative amount of sludge discharged in the first discharge; Pz2 represents the cumulative amount of sludge discharged in the second discharge; Pz3 represents the cumulative amount of sludge discharged in the third discharge; PzJ represents the cumulative amount of sludge discharged in the j-th discharge; Ms i This represents the sludge production rate at time i, expressed in grams per minute; or, The formula for calculating the estimated daily sludge discharge is as follows: Wherein, MR represents the estimated total daily sludge discharge, in kilograms per day; Mzj represents the cumulative sludge production in the previous interval before the (j+1)th sludge discharge, where j is greater than or equal to 1 and less than or equal to J, and J represents the number of sludge discharges at time i; Ms i This represents the sludge production rate at time i, expressed in grams per minute.

12. The method according to any one of claims 7 to 11, characterized in that, The method further includes: The data processing module performs anomaly detection on the multiple sludge discharge monitoring data; if there is abnormal sludge discharge monitoring data among the multiple sludge discharge monitoring data, the multiple sludge discharge monitoring data is repaired and updated to the repaired multiple sludge discharge monitoring data.

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