A HPAM biodegradable aeration control system and method for treating coal sludge water

Abstract

The present application provides an HPAM biodegradation aeration control system and method for treating coal sludge water, which divides the flocculant biodegradation process into multiple aeration cycles. During the flocculant biodegradation process, the dissolved oxygen concentration of the coal sludge water in the current aeration cycle is monitored in real time, and the oxygen consumption in the current aeration cycle is predicted by the dissolved oxygen concentration and the oxygen consumption characteristics of the target microorganisms in the previous aeration cycle to obtain the deviation characteristics of the oxygen concentration in the current aeration cycle; the parameters of each feedback control variable are adjusted by the sludge pH and temperature in the coal sludge water to obtain the set values ​​of each feedback control variable; the deviation compensation amount of oxygen in the current aeration cycle is determined according to the set values ​​and deviation characteristics of each feedback control variable, and then the deviation compensation amount is used to feedback adjust the aeration amount of the aeration module. Based on the above scheme, feedback adjustment control of the aeration amount in HPAM biodegradation can be achieved.

Description

Technical Field

[0001] The present application relates to the field of biodegradation technology, and more specifically, to a HPAM biodegradation aeration control system and method for coal sludge water treatment. Background Art

[0002] When treating coal slime water, partially hydrolyzed polyacrylamide (HPAM) is often used as a flocculant to improve the sedimentation efficiency and purification effect of coal slime water. However, the large-scale use of HPAM will lead to its continuous accumulation in the coal preparation circulating water, reducing the adsorption capacity of flotation reagents on coal slime, thereby affecting the subsequent coal flotation effect. In addition, the residual HPAM may exceed the environmental emission standards and cause pollution to the surrounding environment. To solve this problem, biodegradation has become an efficient and environmentally friendly treatment method.

[0003] Traditional aeration control systems usually adopt fixed aeration strategies or simple proportional-integral-differential (PID) control algorithms, which have lags or overreactions in oxygen supply regulation. When the dissolved oxygen concentration is low, the system often rapidly increases the aeration volume to quickly increase the oxygen concentration, but this reaction may be too intense, resulting in excessive oxygen supply and unnecessary energy waste. In addition, the system fails to reduce the aeration volume in time when the oxygen demand decreases, causing the dissolved oxygen concentration to remain at a high level, thereby wasting energy. Especially when the environment changes greatly or the microbial metabolism changes rapidly, traditional control algorithms are difficult to adapt to fluctuations in oxygen demand in time, and often cannot achieve precise regulation of the aeration volume, which leads to unnecessary increase in energy consumption. Therefore, how to achieve feedback regulation and control of the aeration volume in HPAM biodegradation during coal sludge water treatment has become a difficult problem faced by the industry. Summary of the invention

[0004] The present application provides an HPAM biodegradation aeration control system and method for coal slime water treatment, which can realize feedback regulation control of the aeration amount in HPAM biodegradation during coal slime water treatment.

[0005] In a first aspect, the present application provides a method for controlling HPAM biodegradation aeration for treating coal sludge water, comprising:

[0006] After the HPAM flocculant is used to complete the flocculation and sedimentation in the coal slime water, the supernatant and the turbid liquid in the coal slime water are separated, and the target microorganisms are added to the turbid liquid after dilution treatment for biodegradation of the flocculant, and the aeration module is started to supply oxygen to the target microorganisms;

[0007] The flocculant biodegradation process is divided into multiple aeration cycles. During the flocculant biodegradation process, the dissolved oxygen concentration of the coal slurry water in the current aeration cycle is monitored in real time. The oxygen consumption in the current aeration cycle is predicted based on the dissolved oxygen concentration and the oxygen consumption characteristics of the target microorganisms in the previous aeration cycle to obtain the deviation characteristics of the oxygen concentration in the current aeration cycle.

[0008] Initialize each feedback control variable in the aeration module, and then adjust the parameters of each feedback control variable by the sludge pH and temperature in the coal sludge water to obtain the setting value of each feedback control variable;

[0009] The deviation compensation amount of oxygen in the current aeration cycle is determined according to the set values ​​of each feedback control variable and the deviation characteristics, and then the deviation compensation amount is used to feedback-regulate the aeration amount of the aeration module.

[0010] In some embodiments, dividing the flocculant biodegradation process into a plurality of aeration cycles specifically comprises:

[0011] Obtain multiple dissolved oxygen concentration thresholds during flocculant biodegradation;

[0012] The biodegradation process of the flocculant is divided into stages based on each dissolved oxygen concentration threshold, and multiple aeration cycles are obtained.

[0013] In some embodiments, the deviation of oxygen consumption in the current aeration cycle is predicted by using the dissolved oxygen concentration and the oxygen consumption characteristics of the target microorganism in the previous aeration cycle, and the deviation characteristics of the oxygen concentration in the current aeration cycle are obtained, specifically including:

[0014] Obtain oxygen consumption characteristics of target microorganisms in the last aeration cycle;

[0015] Monitor the inflow rate of coal slurry water in a unit time period;

[0016] Predicting oxygen consumption in the current aeration cycle by using the water inlet flow rate and the oxygen consumption characteristics;

[0017] A deviation characteristic of the oxygen concentration in the current aeration cycle is determined according to the oxygen consumption and the dissolved oxygen concentration.

[0018] In some embodiments, the parameters of each feedback control variable are adjusted by the sludge pH and temperature in the coal sludge water to obtain the setting value of each feedback control variable, which specifically includes:

[0019] Obtain sludge pH and temperature in coal sludge water;

[0020] For each feedback control variable, determine the influence factors of sludge pH and temperature on the feedback control variable;

[0021] The initial value of the feedback control variable is adjusted through various influencing factors to obtain the setting value of the feedback control variable, and then the setting value of each feedback control variable is obtained.

[0022] In some embodiments, determining the deviation compensation amount of oxygen in the current aeration cycle according to the set values ​​of each feedback control variable and the deviation characteristics specifically includes:

[0023] For each feedback control variable, extracting a deviation value of the feedback control variable from the deviation feature;

[0024] Determine the deviation compensation value of the feedback control variable by the deviation value and the setting value of the feedback control variable, and then obtain the deviation compensation value of each feedback control variable;

[0025] The deviation compensation amount of oxygen in the current aeration cycle is determined based on all the deviation compensation values.

[0026] In some embodiments, using the deviation compensation amount to feedback-regulate the aeration amount of the aeration module specifically includes:

[0027] If the deviation compensation amount is greater than 0, the aeration amount of the aeration module is increased in real time;

[0028] If the deviation compensation amount is less than 0, the aeration amount of the aeration module is reduced in real time.

[0029] In some embodiments, an optical dissolved oxygen sensor is used to monitor the dissolved oxygen concentration of the coal slurry water in the current aeration cycle in real time.

[0030] In a second aspect, the present application provides a HPAM biodegradable aeration control system for coal sludge water treatment, comprising:

[0031] The start-up module is used to separate the supernatant from the turbid liquid in the coal slime water after the flocculation and sedimentation are completed by using the HPAM flocculant, and then add the target microorganisms to the turbid liquid after the separation of the coal slime water for biodegradation of the flocculant, and start the aeration module to supply oxygen to the target microorganisms;

[0032] A processing module is used to divide the flocculant biodegradation process into multiple aeration cycles. During the flocculant biodegradation process, the dissolved oxygen concentration of the coal slurry water in the current aeration cycle is monitored in real time, and the oxygen consumption in the current aeration cycle is predicted based on the dissolved oxygen concentration and the oxygen consumption characteristics of the target microorganisms in the previous aeration cycle to obtain the deviation characteristics of the oxygen concentration in the current aeration cycle.

[0033] The processing module is also used to initialize various feedback control variables in the aeration module, and then perform parameter setting on various feedback control variables through the sludge pH and temperature in the coal sludge water to obtain the setting value of each feedback control variable;

[0034] The execution module is used to determine the deviation compensation amount of oxygen in the current aeration cycle according to the set values ​​of each feedback control variable and the deviation characteristics, and then use the deviation compensation amount to feedback adjust the aeration amount of the aeration module.

[0035] In a third aspect, the present application provides a computer device, comprising a memory and a processor, wherein the memory is used to store a computer program, and the processor is used to call and run the computer program from the memory, so that the computer device executes the above-mentioned HPAM biodegradation aeration control method for coal slime water treatment.

[0036] In a fourth aspect, the present application provides a computer-readable storage medium, wherein the computer-readable storage medium stores instructions or codes, and when the instructions or codes are executed on a computer, the computer implements the above-mentioned HPAM biodegradation aeration control method for coal slime water treatment.

[0037] The technical solution provided by the embodiments disclosed in this application has the following beneficial effects:

[0038] In the HPAM biodegradation aeration control system and method for treating coal slime water provided in the present application, after the coal slime water completes flocculation and sedimentation using the HPAM flocculant, the supernatant and the turbid liquid in the coal slime water are separated, the turbid liquid after separation of the coal slime water is diluted and treated, and the target microorganism is added for flocculant biodegradation, and the aeration module is started to supply oxygen to the target microorganism; the flocculant biodegradation process is divided into multiple aeration cycles, and during the flocculant biodegradation process, the dissolved oxygen concentration of the coal slime water in the current aeration cycle is monitored in real time, and the dissolved oxygen concentration and the supernatant are measured by the aeration module. The oxygen consumption characteristics of the target microorganisms in an aeration cycle are used to predict the deviation of the oxygen consumption in the current aeration cycle, and the deviation characteristics of the oxygen concentration in the current aeration cycle are obtained; each feedback control variable in the aeration module is initialized, and then the parameters of each feedback control variable are adjusted by the sludge pH and temperature in the coal sludge water to obtain the set value of each feedback control variable; the deviation compensation amount of oxygen in the current aeration cycle is determined according to the set value of each feedback control variable and the deviation characteristics, and then the deviation compensation amount is used to feedback adjust the aeration amount of the aeration module.

[0039] It can be seen that in the present application, the deviation compensation amount of oxygen in the current aeration cycle is determined according to the set value of each feedback control variable and the deviation characteristic, and then the aeration amount of the aeration module is feedback-adjusted using the deviation compensation amount; first, determining the deviation characteristic can accurately predict the changing trend of oxygen consumption, thereby accurately capturing the changing pattern of oxygen consumption, and facilitating timely discovery of the deviation between oxygen supply and demand. When the oxygen consumption in the coal slime water is not as expected, the system can predict the change in oxygen demand and respond in time to avoid excessive or insufficient aeration, thereby achieving precise adjustment. The prediction of deviation characteristics can reduce system lag, make the control system more flexible and efficient, improve the efficiency of microbial degradation, and avoid energy waste, which helps to achieve real-time optimization of oxygen consumption and ensure the stability and efficiency of the biodegradation process; then By determining the set value, the aeration system can control the aeration volume more accurately, achieve a precise match between oxygen supply and demand, reduce energy consumption, and improve the HPAM degradation efficiency. By incorporating parameters such as sludge pH and temperature in the coal sludge water into the setting process of the feedback control variables, the system can automatically adjust the control parameters according to the actual environmental conditions to ensure that the aeration module can work efficiently under various environmental changes. The dynamic adjustment of the set value enables the feedback control variables to adapt to these changes, maintain the operating efficiency of the aeration module and the metabolic activity of microorganisms, thereby avoiding unstable factors caused by changes in the external environment, thereby ensuring the adaptability and optimization effect of the feedback regulation, and effectively improving the stability and energy efficiency of the biodegradation process. In summary, based on the above scheme, feedback regulation control of the aeration volume in HPAM biodegradation during coal sludge water treatment can be realized. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0041] Figure 1 is an exemplary flow chart of a method for controlling the aeration of HPAM biodegradation for treating coal sludge water according to some embodiments of the present application;

[0042] Figure 2 It is a diagram of the mechanism of action of the flocculant in coal sludge water according to some embodiments of the present application;

[0043] Figure 3 is a schematic diagram of a process for determining a deviation compensation amount according to some embodiments of the present application;

[0044] Figure 4It is a schematic diagram of the structure of the HPAM biodegradable aeration control system for coal sludge water treatment according to some embodiments of the present application;

[0045] Figure 5 It is a structural schematic diagram of a computer device for implementing a HPAM biodegradation aeration control method for coal sludge water treatment according to some embodiments of the present application. DETAILED DESCRIPTION

[0046] In order to better understand the technical solution of the present application, the technical solution of the present application will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0047] refer to Figure 1 , which is an exemplary flow chart of a method for controlling the biodegradation of HPAM for treating coal sludge water according to some embodiments of the present application, and the method for controlling the biodegradation of HPAM for treating coal sludge water mainly comprises the following steps:

[0048] In step 101, after flocculation and sedimentation are completed in the coal slurry using the HPAM flocculant, the supernatant and the turbid liquid in the coal slurry are separated, the turbid liquid after separation from the coal slurry is diluted and then added with target microorganisms for biodegradation of the flocculant, and the aeration module is started to supply oxygen to the target microorganisms.

[0049] It should be noted that, in the present application, HPAM flocculant refers to high molecular weight polyacrylamide used for flocculation and sedimentation of coal sludge water; aeration module refers to a system unit that controls oxygen supply and maintains dissolved oxygen concentration; and target microorganisms refer to specific bacterial communities used for HPAM degradation.

[0050] In specific implementation, after the HPAM flocculant completes the flocculation and sedimentation of the coal slurry water, the gravity sedimentation method is used to separate the coal slurry water into a supernatant and a turbid liquid to reduce the impact of solid particles on the subsequent biodegradation process. Subsequently, the turbid liquid is diluted and treated. The solid content of the coal slurry water can be adjusted by adding a certain proportion of clean water or treated supernatant to achieve conditions suitable for microbial degradation to prevent excessive suspended solid concentration from affecting microbial activity. The target microbial community, such as: dominant bacteria adapted to HPAM degradation (such as Pseudomonas, Bacillus, etc.), is placed in the diluted turbid liquid to ensure that it can play the flocculant degradation function under appropriate biochemical conditions. In order to provide sufficient oxygen to support microbial metabolism, the aeration module is started. The aeration module can use technologies such as forced aeration, micro-nano aeration or surface aeration to evenly dissolve oxygen in the coal slurry water, improve the degradation efficiency of microorganisms to HPAM, and facilitate the subsequent real-time monitoring of oxygen concentration by an online dissolved oxygen sensor, and dynamically adjust it in combination with parameters such as pH value and temperature of the sludge to ensure the optimal degradation environment.

[0051] In some embodiments, reference Figure 2 The figure is a diagram of the mechanism of action of the flocculant in the coal sludge water shown in some embodiments of the present application, which shows the mechanism of action of the flocculant in the coal sludge water. On the left, the flocculant is added to the coal sludge water containing tailings particles, and the flocculant molecules are combined with the surface of the tailings particles through their long chain structure to form a bridging effect, so that the dispersed particles are aggregated into larger flocs. Subsequently, these flocs settle to the bottom by gravity to form floc water, thereby achieving solid-liquid separation and improving the clarity and treatment efficiency of the coal sludge water.

[0052] In step 102, the flocculant biodegradation process is divided into multiple aeration cycles. During the flocculant biodegradation process, the dissolved oxygen concentration of the coal sludge water in the current aeration cycle is monitored in real time. The oxygen consumption in the current aeration cycle is predicted by the deviation of the dissolved oxygen concentration and the oxygen consumption characteristics of the target microorganisms in the previous aeration cycle to obtain the deviation characteristics of the oxygen concentration in the current aeration cycle.

[0053] In some embodiments, dividing the flocculant biodegradation process into multiple aeration cycles can be achieved by the following steps:

[0054] Obtain multiple dissolved oxygen concentration thresholds during flocculant biodegradation;

[0055] The biodegradation process of the flocculant is divided into stages based on each dissolved oxygen concentration threshold, and multiple aeration cycles are obtained.

[0056] In the specific implementation, first, obtaining multiple dissolved oxygen concentration thresholds in the flocculant biodegradation process can be achieved in the following manner, namely: presetting the low oxygen threshold and high oxygen threshold in the flocculant biodegradation process through historical experience combined with the oxygen consumption characteristics of the target microorganisms, and taking the set of the low oxygen threshold and the high oxygen threshold as the multiple dissolved oxygen concentration thresholds in the flocculant biodegradation process; then, dividing the flocculant biodegradation process into stages based on each dissolved oxygen concentration threshold, and obtaining multiple aeration cycles can be achieved in the following manner, namely: when the dissolved oxygen concentration is in the range of 0 to the low oxygen threshold, it is a high-intensity aeration period, at which time high-intensity aeration is started; when the dissolved oxygen concentration is in the range of the low oxygen threshold to the high oxygen threshold, it is a stable period, at which time the baseline aeration is maintained; when the dissolved oxygen concentration is higher than the high oxygen threshold, it is a stop period, at which time aeration is suspended, and the set of the high-intensity aeration period, the stabilizer and the stop period is taken as multiple aeration cycles.

[0057] It should be noted that, in the present application, the aeration cycle refers to the time unit for the aeration module to complete one oxygen supply and regulation during the biodegradation process; the dissolved oxygen concentration threshold refers to the oxygen concentration limit required to maintain the normal metabolism of the target microorganisms.

[0058] In some embodiments, an optical dissolved oxygen sensor is used to monitor the dissolved oxygen concentration of the coal slurry water in the current aeration cycle in real time; in specific implementation, an optical dissolved oxygen sensor is used to monitor the dissolved oxygen concentration of the coal slurry water in the current aeration cycle, and the monitoring result at each fixed interval (the default is 1s) is used as the dissolved oxygen concentration, thereby taking the collection of all dissolved oxygen concentrations as the dissolved oxygen concentration information; it should be noted that, in this application, the dissolved oxygen concentration.

[0059] In some embodiments, the oxygen consumption in the current aeration cycle is predicted by the dissolved oxygen concentration and the oxygen consumption characteristics of the target microorganism in the previous aeration cycle, and the deviation characteristics of the oxygen concentration in the current aeration cycle are obtained by the following steps:

[0060] Obtain oxygen consumption characteristics of target microorganisms in the last aeration cycle;

[0061] Monitor the inflow rate of coal slurry water in a unit time period;

[0062] Predicting oxygen consumption in the current aeration cycle by using the water inlet flow rate and the oxygen consumption characteristics;

[0063] A deviation characteristic of the oxygen concentration in the current aeration cycle is determined according to the oxygen consumption and the dissolved oxygen concentration.

[0064] It should be noted that, in the present application, the deviation characteristic indicates the degree of deviation of the oxygen concentration in the current aeration cycle relative to the target value; the oxygen consumption characteristic indicates the oxygen consumption pattern of the target microorganism in the previous aeration cycle; the water inlet flow rate indicates the volume entering the coal slurry water treatment system per unit time; and the oxygen consumption indicates the oxygen consumption of the target microorganism per unit time in the current aeration cycle.

[0065] In the specific implementation, firstly, the oxygen consumption characteristics of the target microorganisms in the last aeration cycle can be obtained by the following methods, namely: using an optical dissolved oxygen sensor to record the change value of the dissolved oxygen concentration at fixed intervals (the default is 1s) during the last aeration cycle, and combining the aeration control data (for example: blower operation time, aeration intensity) to evaluate the oxygen delivery concentration of the aeration module within a fixed interval, so that the mean of all change values ​​minus the mean of all oxygen delivery concentrations can be used as the oxygen consumption characteristics of the target microorganisms in the last aeration cycle; secondly, monitoring the water flow rate of the coal slurry water in a unit time period can be achieved by the following methods, namely: installing an ultrasonic flowmeter in the water inlet pipe, so as to use the ultrasonic flowmeter to measure the oxygen consumption of the target microorganisms in the last aeration cycle. The wave flowmeter monitors the inlet flow rate of the coal slurry water within a unit time period (the default is 1s); then, the oxygen consumption in the current aeration cycle is predicted by the inlet flow rate and the oxygen consumption characteristics, which can be achieved by a coefficient method, that is, the product of the oxygen consumption characteristics of the target microorganism in the previous aeration cycle and the inlet flow rate is used as the oxygen consumption in the current aeration cycle; finally, the deviation characteristics of the oxygen concentration in the current aeration cycle are determined according to the oxygen consumption and the dissolved oxygen concentration, which can be achieved in the following way, that is, the difference between the oxygen consumption and each dissolved oxygen concentration in the dissolved oxygen concentration information is used as the concentration deviation value, so that the set of all concentration deviation values ​​is used as the deviation characteristic of the oxygen concentration in the current aeration cycle.

[0066] In step 103, each feedback control variable in the aeration module is initialized, and then parameters of each feedback control variable are adjusted according to the sludge pH and temperature in the coal sludge water to obtain the setting value of each feedback control variable.

[0067] In some embodiments, initialization of each feedback control variable in the aeration module can be achieved in the following manner: by using the proportional gain, integral gain and differential gain in the control strategy library of the aeration module as feedback control variables, all the feedback control variables in the aeration module can be obtained, and the parameter value of each feedback control variable is initialized using a default parameter set based on historical data analysis, thereby completing the initialization of each feedback control variable in the aeration module.

[0068] In some embodiments, the parameters of each feedback control variable are adjusted by the sludge pH and temperature in the coal sludge water, and the setting value of each feedback control variable can be obtained by the following steps:

[0069] Obtain sludge pH and temperature in coal sludge water;

[0070] For each feedback control variable, determine the influence factors of sludge pH and temperature on the feedback control variable;

[0071] The initial value of the feedback control variable is adjusted through each influencing factor to obtain the setting value of the feedback control variable, and then the setting value of each feedback control variable is obtained. In the specific implementation, first, the pH and temperature of the sludge in the coal sludge water can be obtained in the following way, namely: using an online pH sensor to measure the pH of the sludge in the coal sludge water, and using a temperature sensor (such as: NTC thermistor) to measure the temperature of the coal sludge water; then, for each feedback control variable, the influence factors of the sludge pH and temperature on the feedback control variable are determined respectively. This can be achieved in the following way, namely: for each feedback control variable, a mechanism model is used in combination with historical data to analyze the effects of sludge pH and temperature on microbial activity and oxygen demand, and a correlation between the control variable and the environmental factors is established, thereby the pollution in the correlation relationship is combined with the environmental factors. The correlation values ​​of sludge pH and temperature on the feedback control variables are taken as influencing factors, and the influencing factors of sludge pH and temperature on the feedback control variables can be obtained; finally, the initial values ​​of the feedback control variables are adjusted by various influencing factors to obtain the set values ​​of the feedback control variables, and then the set values ​​of various feedback control variables can be obtained in the following way, namely: the product of various influencing factors and the initial values ​​of the feedback control variables is calculated as the set influence value, and the result of calculating the initial value of the feedback control variable plus the sum of the two set influence values ​​is used as the set value of the feedback control variable. The set values ​​of various feedback control variables can be obtained in the above way.

[0072] It should be noted that in this application, the set value represents the set value of the feedback control variable after parameter optimization; the influencing factor represents the weight of the specific environmental variable on the adjustment amplitude of the feedback control variable; the mechanism model is a mathematical model based on physical, chemical and biological principles, which aims to describe the influence of environmental factors such as sludge pH and temperature on microbial activity and oxygen demand. The mechanism model combines the metabolic process of microorganisms, the chemical reaction kinetics of sludge and the law of oxygen consumption, and can simulate the growth, degradation efficiency and oxygen consumption rate of microorganisms under different environmental conditions. By integrating historical data, the mechanism model can reflect how factors such as temperature and pH affect the metabolic rate of microorganisms and the oxygen consumption pattern. The technical principles of the mechanism model mainly include metabolic models, reaction kinetics and environmental adaptability analysis, which can capture the mechanism of action of changes in environmental variables on feedback control variables, thereby establishing the correlation between environmental factors and control variables, and quantifying the influence of sludge pH and temperature on feedback control variables as influencing factors, providing a theoretical basis for accurately adjusting the aeration volume and optimizing the microbial degradation process.

[0073] In step 104, the deviation compensation amount of oxygen in the current aeration cycle is determined according to the set values ​​of each feedback control variable and the deviation characteristics, and then the deviation compensation amount is used to perform feedback adjustment control on the aeration amount of the aeration module.

[0074] In some embodiments, the deviation compensation amount of oxygen in the current aeration cycle is determined according to the set value of each feedback control variable and the deviation characteristic, referring to Figure 3 As described above, the figure is a schematic diagram of a process for determining the deviation compensation amount in some embodiments of the present application. In this embodiment, determining the deviation compensation amount can be implemented by the following steps:

[0075] In step 1041, for each feedback control variable, a deviation value of the feedback control variable is extracted from the deviation feature;

[0076] In step 1042, the deviation compensation value of the feedback control variable is determined by the deviation value and the set value of the feedback control variable, thereby obtaining the deviation compensation value of each feedback control variable;

[0077] In step 1043, the deviation compensation amount of oxygen in the current aeration cycle is determined according to all the deviation compensation values.

[0078] In specific implementation, first, for each feedback control variable, the deviation value of the feedback control variable is extracted from the deviation feature, which can be implemented in the following manner, that is, for each feedback control variable, if the feedback variable is a proportional gain, the product of the set value of the feedback control variable and the concentration deviation value at the most recent moment in the deviation feature is used as the deviation value of the feedback control variable; if the feedback control variable is an integral gain, the product of the sum of all concentration deviation values ​​in the deviation feature and the set value of the feedback control variable is used as the deviation value of the feedback control variable; if the feedback control variable is a differential gain, the sum of all concentration deviation values ​​in the deviation feature and the average of the set value of the feedback control variable is used as the differential gain. The deviation value of the feedback control variable can be obtained by calculating the deviation value of the feedback control variable; then, the deviation compensation value of the feedback control variable is determined by the deviation value and the set value of the feedback control variable, and then the deviation compensation value of each feedback control variable is obtained. The following method can be used to achieve this, that is, the product of the deviation value and the set value of the feedback control variable is used as the deviation compensation value of the feedback control variable, and the deviation compensation value of each feedback control variable can be obtained by the above method; finally, the deviation compensation amount of oxygen in the current aeration cycle is determined according to all the deviation compensation values, which can be achieved in the following way, that is, the sum of all the deviation compensation values ​​is used as the deviation compensation amount of oxygen in the current aeration cycle.

[0079] It should be noted that, in the present application, the deviation compensation amount represents the total amount of oxygen supply that needs to be adjusted in the current aeration cycle; the deviation value represents the degree of deviation of the feedback control variable from the target value; and the deviation compensation value represents the independent correction amount for each feedback control variable.

[0080] In some embodiments, feedback adjustment of the aeration amount of the aeration module using the deviation compensation amount can be achieved by the following steps:

[0081] If the deviation compensation amount is greater than 0, the aeration amount of the aeration module is increased in real time;

[0082] If the deviation compensation amount is less than 0, the aeration amount of the aeration module is reduced in real time.

[0083] It should be noted that in the present application, if the deviation compensation amount is greater than 0, it means that the current dissolved oxygen concentration is lower than the target value. The aeration amount of the aeration module can be increased according to a preset ratio based on the size of the deviation compensation amount until the dissolved oxygen concentration reaches the target value. In specific implementation, the aeration amount of the aeration module can be increased in real time by increasing the fan frequency and increasing the valve opening. If the deviation compensation amount is less than 0, the aeration amount of the aeration module can be reduced according to a preset ratio based on the size of the deviation compensation amount until the dissolved oxygen concentration reaches the target value. In specific implementation, the aeration amount of the aeration module can be increased in real time by reducing the fan frequency and reducing the valve opening.

[0084] In addition, in another aspect of the present application, in some embodiments, the present application provides a HPAM biodegradable aeration control system for coal sludge water treatment, referring to Figure 4 , which is a schematic diagram of the structure of the HPAM biodegradable aeration control system for treating coal sludge water according to some embodiments of the present application. The HPAM biodegradable aeration control system for treating coal sludge water includes: a starting module 201, a processing module 202 and an execution module 203, which are described as follows:

[0085] The start-up module 201 in the present application is mainly used to separate the supernatant from the lower turbid liquid in the coal slime water after the flocculation and sedimentation are completed by using the HPAM flocculant, and to add the target microorganisms to the lower turbid liquid after dilution treatment after the separation of the coal slime water for biodegradation of the flocculant, and to start the aeration module to supply oxygen to the target microorganisms;

[0086] Processing module 202, in the present application, the processing module 202 is used to divide the flocculant biodegradation process into multiple aeration cycles, and in the flocculant biodegradation process, monitor the dissolved oxygen concentration of the coal slurry water in the current aeration cycle in real time, and predict the deviation of oxygen consumption in the current aeration cycle based on the dissolved oxygen concentration and the oxygen consumption characteristics of the target microorganisms in the previous aeration cycle, so as to obtain the deviation characteristics of the oxygen concentration in the current aeration cycle;

[0087] It should be noted that the processing module 202 is also used to initialize various feedback control variables in the aeration module, and then perform parameter setting on various feedback control variables through the sludge pH and temperature in the coal sludge water to obtain the setting value of each feedback control variable;

[0088] The execution module 203 in the present application is mainly used to determine the deviation compensation amount of oxygen in the current aeration cycle according to the set values ​​of each feedback control variable and the deviation characteristics, and then use the deviation compensation amount to feedback adjust the aeration amount of the aeration module.

[0089] The above describes in detail the examples of the HPAM biodegradable aeration control system and method for coal slime water treatment provided by the embodiments of the present application. It can be understood that in order to realize the above functions, the corresponding device includes hardware structures and / or software modules corresponding to the execution of each function. It should be easily appreciated by those skilled in the art that, in combination with the units and algorithm steps of each example described in the embodiments disclosed herein, the present application can be implemented in the form of hardware or a combination of hardware and computer software. Whether a function is executed in the form of hardware or computer software driving hardware depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to exceed the scope of the present application.

[0090] In some embodiments, the present application also provides a computer device, comprising a memory and a processor, wherein the memory is used to store a computer program, and the processor is used to call and run the computer program from the memory, so that the computer device executes the above-mentioned HPAM biodegradation aeration control method for coal slime water treatment.

[0091] In some embodiments, reference Figure 5 , the dotted line in the figure indicates that the unit or module is optional, and the figure is a schematic diagram of the structure of a computer device for implementing the HPAM biodegradation aeration control method for coal slurry water treatment according to an embodiment of the present application. The HPAM biodegradation aeration control method for coal slurry water treatment described in the above embodiment can be Figure 5 The computer device shown in the figure is implemented, and the computer device includes at least one processor 301, a memory 302 and at least one communication unit 305. The computer device can be a terminal device, a server or a chip.

[0092] The processor 301 may be a general-purpose processor or a special-purpose processor. For example, the processor 301 may be a central processing unit (CPU), which may be used to control the computer device, execute software programs, and process data of the software programs. The computer device may also include a communication unit 305 to implement signal input (reception) and output (transmission).

[0093] For example, the computer device may be a chip, the communication unit 305 may be an input and / or output circuit of the chip, or the communication unit 305 may be a communication interface of the chip, and the chip may be a component of a terminal device, a network device, or other devices.

[0094] For another example, the computer device may be a terminal device or a server, and the communication unit 305 may be a transceiver of the terminal device or the server, or the communication unit 305 may be a transceiver circuit of the terminal device or the server.

[0095] The computer device may include one or more memories 302, on which a program 304 is stored. The program 304 can be executed by the processor 301 to generate instructions 303, so that the processor 301 performs the method described in the above method embodiment according to the instructions 303. Optionally, data (such as a target audit model) can also be stored in the memory 302. Optionally, the processor 301 can also read the data stored in the memory 302, and the data can be stored at the same storage address as the program 304, or the data can be stored at a different storage address from the program 304.

[0096] The processor 301 and the memory 302 may be provided separately or integrated together, for example, integrated on a system on chip (SOC) of the terminal device.

[0097] It should be understood that each step of the above method embodiment can be completed by a hardware-based logic circuit or software-based instructions in the processor 301. The processor 301 can be a CPU, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA), or other programmable logic devices, such as discrete gates, transistor logic devices, or discrete hardware components.

[0098] Those skilled in the art will appreciate that the embodiments of the present application may be provided as methods, systems, or computer program products. Therefore, the present application may adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Moreover, the present application may adopt the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program codes.

[0099] For example, in some embodiments, the present application also provides a computer-readable storage medium, in which instructions or codes are stored. When the instructions or codes are executed on a computer, the computer implements the above-mentioned HPAM biodegradation aeration control method for coal slime water treatment.

[0100] Although the preferred embodiments of the present application have been described, those skilled in the art may make other changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications falling within the scope of the present application.

[0101] Obviously, those skilled in the art can make various changes and modifications to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is also intended to include these modifications and variations.

Claims

1. A method for controlling the aeration of HPAM biodegradation for treating coal sludge water, characterized in that: The steps include: After the HPAM flocculant is used to complete the flocculation and sedimentation in the coal slime water, the supernatant and the turbid liquid in the coal slime water are separated, and the target microorganisms are added to the turbid liquid after dilution treatment for biodegradation of the flocculant, and the aeration module is started to supply oxygen to the target microorganisms; The flocculant biodegradation process is divided into multiple aeration cycles. During the flocculant biodegradation process, the dissolved oxygen concentration of the coal slurry water in the current aeration cycle is monitored in real time. The oxygen consumption in the current aeration cycle is predicted based on the dissolved oxygen concentration and the oxygen consumption characteristics of the target microorganisms in the previous aeration cycle to obtain the deviation characteristics of the oxygen concentration in the current aeration cycle. Initialize each feedback control variable in the aeration module, and then adjust the parameters of each feedback control variable by the sludge pH and temperature in the coal sludge water to obtain the setting value of each feedback control variable; The deviation compensation amount of oxygen in the current aeration cycle is determined according to the set values ​​of each feedback control variable and the deviation characteristics, and then the deviation compensation amount is used to feedback-regulate the aeration amount of the aeration module.

2. The method according to claim 1, characterized in that The flocculant biodegradation process is divided into multiple aeration cycles, including: Obtain multiple dissolved oxygen concentration thresholds during flocculant biodegradation; The biodegradation process of the flocculant is divided into stages based on each dissolved oxygen concentration threshold, and multiple aeration cycles are obtained.

3. The method according to claim 1, characterized in that The oxygen consumption in the current aeration cycle is predicted by the dissolved oxygen concentration and the oxygen consumption characteristics of the target microorganism in the previous aeration cycle, and the deviation characteristics of the oxygen concentration in the current aeration cycle are obtained, which specifically include: Obtain oxygen consumption characteristics of target microorganisms in the last aeration cycle; Monitor the inflow rate of coal slurry water in a unit time period; Predicting oxygen consumption in the current aeration cycle by using the water inlet flow rate and the oxygen consumption characteristics; A deviation characteristic of the oxygen concentration in the current aeration cycle is determined according to the oxygen consumption and the dissolved oxygen concentration.

4. The method according to claim 1, characterized in that The parameters of each feedback control variable are adjusted by the sludge pH and temperature in the coal sludge water, and the setting values ​​of each feedback control variable are obtained, including: Obtain sludge pH and temperature in coal sludge water; For each feedback control variable, determine the influence factors of sludge pH and temperature on the feedback control variable; The initial value of the feedback control variable is adjusted through various influencing factors to obtain the setting value of the feedback control variable, and then the setting value of each feedback control variable is obtained.

5. The method according to claim 1, characterized in that Determining the deviation compensation amount of oxygen in the current aeration cycle according to the set values ​​of each feedback control variable and the deviation characteristics specifically includes: For each feedback control variable, extracting a deviation value of the feedback control variable from the deviation feature; Determine the deviation compensation value of the feedback control variable by the deviation value and the setting value of the feedback control variable, and then obtain the deviation compensation value of each feedback control variable; The deviation compensation amount of oxygen in the current aeration cycle is determined based on all the deviation compensation values.

6. The method according to claim 1, characterized in that Using the deviation compensation amount to feedback-regulate the aeration amount of the aeration module specifically includes: If the deviation compensation amount is greater than 0, the aeration amount of the aeration module is increased in real time; If the deviation compensation amount is less than 0, the aeration amount of the aeration module is reduced in real time.

7. The method according to claim 1, characterized in that An optical dissolved oxygen sensor is used to monitor the dissolved oxygen concentration of the coal slurry water in real time during the current aeration cycle.

8. A HPAM biodegradable aeration control system for coal sludge water treatment, characterized in that: include: The start-up module is used to separate the supernatant from the turbid liquid in the coal slime water after the flocculation and sedimentation are completed by using the HPAM flocculant, and then add the target microorganisms to the turbid liquid after the separation of the coal slime water for biodegradation of the flocculant, and start the aeration module to supply oxygen to the target microorganisms; A processing module is used to divide the flocculant biodegradation process into multiple aeration cycles. During the flocculant biodegradation process, the dissolved oxygen concentration of the coal slurry water in the current aeration cycle is monitored in real time, and the oxygen consumption in the current aeration cycle is predicted based on the dissolved oxygen concentration and the oxygen consumption characteristics of the target microorganisms in the previous aeration cycle to obtain the deviation characteristics of the oxygen concentration in the current aeration cycle. The processing module is also used to initialize various feedback control variables in the aeration module, and then perform parameter setting on various feedback control variables through the sludge pH and temperature in the coal sludge water to obtain the setting value of each feedback control variable; The execution module is used to determine the deviation compensation amount of oxygen in the current aeration cycle according to the set values ​​of each feedback control variable and the deviation characteristics, and then use the deviation compensation amount to feedback adjust the aeration amount of the aeration module.

9. A computer device, characterized in that: The computer device includes a memory and a processor, the memory is used to store a computer program, and the processor is used to call and run the computer program from the memory, so that the computer device executes the HPAM biodegradation aeration control method for coal sludge water treatment described in any one of claims 1 to 7.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores instructions or codes, and when the instructions or codes are executed on a computer, the computer implements the HPAM biodegradation aeration control method for coal sludge water treatment according to any one of claims 1 to 7.

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