Acrylic acid wastewater intelligent treatment system and treatment method thereof

Abstract

The present invention relates to the technical field of wastewater treatment, and discloses an acrylic acid wastewater intelligent treatment system and a treatment method thereof, the acrylic acid wastewater intelligent treatment system comprises a continuous monitoring module, the continuous monitoring module comprises an ultraviolet spectrum sensor installed at a key node of a water inlet of the wastewater treatment system, and the ultraviolet spectrum sensor continuously monitors the dynamic change of an acrylic acid concentration value in water in real time; and the data processing module is used for setting a concentration upper limit threshold value when monitoring that the concentration of the acrylic acid in the water in the water inlet exceeds the concentration upper limit threshold value. When the concentration of the acrylic acid in the water at the water inlet is monitored to exceed the standard, the concentration change in a short time is smoothed through a rollback time window mechanism, so that the response to the concentration fluctuation is more flexible, and the system can judge that the wastewater can still achieve a purification effect after being mixed with low-concentration wastewater through calculation of a temporary upper limit threshold value; no unnecessary alarm or processing stagnation is generated.

Description

Technical Field

[0001] The present invention relates to the technical field of wastewater treatment, and particularly to an intelligent treatment system and a treatment method for acrylic acid wastewater. Background Art

[0002] The treatment of acrylic acid wastewater refers to a technology that precisely controls and optimizes the treatment process of acrylic acid wastewater by combining modern sensor technology, automatic control, data analysis, and intelligent algorithms. The purpose of this treatment system is to improve the treatment efficiency of acrylic acid wastewater and ensure that the discharge meets environmental standards.

[0003] Currently, when treating acrylic acid wastewater, sensors are installed at the inlet of the wastewater treatment tank to continuously monitor the acrylic acid concentration in the wastewater, enabling the wastewater treatment system to intelligently control the regulation of the dosage of chemicals added to the treatment tank and avoiding the impact on water quality treatment caused by excessive or insufficient addition of chemicals. However, the traditional method of monitoring the acrylic acid concentration in the water at the inlet only conducts emergency response treatment when the concentration exceeds the standard. In actual operations, the acrylic acid concentration in the wastewater of the factory workshop where acrylic acid wastewater is generated will inevitably fluctuate. Such short-term and intermittent fluctuations in the concentration exceeding the standard may cause the system to overreact, increasing unnecessary interventions and warnings. Summary of the Invention

[0004] Aiming at the problems existing in the above-mentioned prior art, the purpose of the present invention is to provide an intelligent treatment system and a treatment method for acrylic acid wastewater, which can provide the adaptive ability of the wastewater treatment system, cope with the fluctuations in the acrylic acid concentration in the discharged wastewater, can more clearly judge whether it has an impact on the overall water quality purification operation, and reduce unnecessary interventions of the system.

[0005] To achieve the above purpose, the present invention provides the following technical solutions: An intelligent treatment system for acrylic acid wastewater, comprising:

[0006] A continuous monitoring module, which includes installing an ultraviolet spectrum sensor at the key node of the inlet of the wastewater treatment system to continuously monitor the dynamic change of the acrylic acid concentration value in the water in real time;

[0007] A data processing module, which includes setting a concentration upper limit threshold. When it is monitored that the acrylic acid concentration in the water at the inlet exceeds the concentration upper limit threshold, retrieve the water concentration data in the rollback time window to obtain the average concentration of the discharged concentration in the rollback time window;

[0008] A concentration calculation module, which includes obtaining a temporary upper limit threshold through the average concentration and the concentration upper limit threshold, comparing the real-time concentration value in the water at the inlet monitored with the temporary upper limit threshold, and making corresponding responses according to the comparison result;

[0009] Fault warning module. The fault warning module includes setting a fluctuation tolerance duration and a fluctuation tolerance count. During a processing operation, the exceeding duration and the exceeding count of the acrylic acid concentration in water exceeding the concentration upper limit threshold are recorded, and the exceeding duration and the exceeding count are respectively compared with their corresponding fluctuation tolerance duration and fluctuation tolerance count, and corresponding reactions are made according to the comparison results.

[0010] In some embodiments, the rollback time window is specifically a previous time period when the system monitors that the acrylic acid concentration in the water at the water inlet exceeds the concentration upper limit threshold. The average discharge concentration is calculated through the duration of the rollback time window and the change of the recorded concentration values within the rollback time window. Where n represents the total amount of concentration value data monitored by the system within the rollback time window, and C i represents the concentration value of the i-th monitoring data.

[0011] In some embodiments, the specific method for obtaining the temporary upper limit threshold is: the temporary upper limit threshold Cu = (Cm - Cj)·k + Cm is obtained through the concentration upper limit threshold Cm and the average concentration Cj, where k is an adjustment factor less than 1.

[0012] In some embodiments, after comparing the real-time concentration value with the temporary upper limit threshold, if the real-time concentration value of acrylic acid in water is less than or equal to the temporary upper limit threshold, the system does not take any action but records the event.

[0013] If the real-time concentration value of acrylic acid in water is greater than the temporary upper limit threshold, the system should give a fault warning feedback to remind the operation management personnel to stop discharging the wastewater at the water inlet and find out the reason for the excessive acrylic acid in the water inlet.

[0014] In some embodiments, the exceeding duration of the acrylic acid concentration in water exceeding the concentration upper limit threshold is compared with the fluctuation tolerance duration, and at the same time, the exceeding count of the acrylic acid concentration in water exceeding the concentration upper limit threshold is compared with the fluctuation tolerance count. When both the exceeding duration and the exceeding count are less than or equal to the corresponding fluctuation tolerance duration and fluctuation tolerance count, the system does not take any action; when both the exceeding duration and the exceeding count are greater than the corresponding fluctuation tolerance duration and fluctuation tolerance count, the system gives a fault warning feedback to remind the operation management personnel to find out the reason for the excessive acrylic acid in the water inlet and make a reaction.

[0015] In some embodiments, a high concentration threshold is set, and the high concentration threshold is less than the concentration upper limit threshold. When the system monitors that the acrylic acid concentration in the water at the water inlet reaches the high concentration threshold, the duration of reaching the high concentration threshold is recorded, and the total operation duration of the current acrylic acid wastewater treatment is obtained, and the high drug dosage ratio is calculated. Corresponding reactions are made through the comparison of the high drug dosage ratio with the drug dosage ratio warning threshold.

[0016] In some embodiments, the high-drug-dose ratio is obtained by the duration Ns when the wastewater concentration in the water inlet reaches the high-concentration threshold and the total operation duration Zs of wastewater treatment. If the high-drug-dose ratio does not reach the drug-dose ratio warning threshold, the system does not take any action; if the high-drug-dose ratio reaches the drug-dose ratio warning threshold, the system should execute the dynamic adjustment strategy for concentration requirements.

[0017] In some embodiments, the dynamic adjustment strategy for concentration requirements includes: subtracting the high-concentration threshold from the concentration upper limit threshold to obtain the threshold difference, dividing the threshold difference into the first half difference segment and the second half difference segment, and marking the first half difference segment and the second half difference segment as the level-2 difference segment and the level-1 difference segment respectively. When the high-drug-dose ratio is greater than the drug-dose ratio warning threshold, the system calculates the average of all recorded acrylic acid concentration values when exceeding the high-concentration threshold, subtracts this average value from the high-concentration threshold to obtain the concentration excess difference, and selects the corresponding concentration upper limit threshold reduction method according to whether the concentration excess difference falls into the level-2 difference segment or the level-1 difference segment;

[0018] The concentration upper limit threshold reduction method is: obtaining the concentration upper limit adjustment threshold through the high-concentration threshold Gn and the threshold difference Un Wherein, w represents the corresponding level difference segment into which the concentration excess difference falls, that is, w is 2 when it falls into the level-2 difference segment and w is 1 when it falls into the level-1 difference segment.

[0019] The present invention also provides the following technical solution: a smart treatment method for acrylic acid wastewater, including the following steps:

[0020] Install an ultraviolet spectrum sensor at the key node of the water inlet of the wastewater treatment system to continuously monitor the dynamic change of the acrylic acid concentration value in the water in real time;

[0021] Set the concentration upper limit threshold. When it is monitored that the acrylic acid concentration in the water at the water inlet exceeds the concentration upper limit threshold, retrieve the water concentration data in the rollback time window to obtain the average discharged concentration in the rollback time window;

[0022] Obtain the temporary upper limit threshold through the average concentration and the concentration upper limit threshold, compare the real-time concentration value in the water at the monitored water inlet with the temporary upper limit threshold, and make corresponding responses according to the comparison results;

[0023] Set the fluctuation tolerance duration and the fluctuation tolerance times. Record the excess duration and the excess times when the acrylic acid concentration in the water exceeds the concentration upper limit threshold during a treatment operation, and compare the excess duration and the excess times with their corresponding fluctuation tolerance duration and fluctuation tolerance times respectively, and make corresponding responses according to the comparison results.

[0024] The present invention further provides a computer-readable storage medium storing a computer program, which is executed by a processor to implement the above-mentioned intelligent treatment system and treatment method for acrylic acid wastewater.

[0025] The technical solution provided by the present invention has the following beneficial effects compared with the prior art:

[0026] First, when the concentration of acrylic acid in the water at the inlet is detected to exceed the standard, through the mechanism of rolling back the time window, the concentration change within a short period of time is smoothed, making the response to concentration fluctuations more flexible. Through the calculation of the temporary upper limit threshold, the system can determine that these wastewaters can still achieve the purification effect after being mixed with low-concentration wastewaters, without generating unnecessary alarms or treatment stagnation.

[0027] Second, through the design of the fluctuation tolerance duration and the number of fluctuation tolerances, the present invention can effectively avoid overreacting to occasional short-term or few-number concentration fluctuations, improve the fault tolerance of the system, and establish clear tolerance criteria, enabling the system to issue an alarm only when real intervention is needed, thus ensuring that the operator can detect and take corresponding measures in time.

[0028] Third, the present invention can dynamically adjust the concentration upper limit threshold. Especially when the acrylic acid concentration in the wastewater is close to the upper limit for a long time, by adjusting the threshold, the sensitivity of the system warning is controlled, avoiding the system running at a dosing amount close to the upper limit for a long time and reducing the possibility of chemical accumulation in the treatment tank. Description of the Drawings

[0029] Figure 1 It is a schematic diagram of the modules of an intelligent treatment system for acrylic acid wastewater according to the present invention;

[0030] Figure 2 It is a schematic diagram of the process of an intelligent treatment method for acrylic acid wastewater according to the present invention. Detailed Embodiments

[0031] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0032] It can be understood that the term "one" should be understood as "at least one" or "one or more". That is, in one embodiment, the number of an element can be one, while in other embodiments, the number of the element can be multiple. The term "one" cannot be understood as a limitation on the number.

[0033] The present invention provides an intelligent treatment system for acrylic acid wastewater, as Figure 1 shown, which includes a continuous monitoring module, a data processing module, a concentration calculation module, and a fault warning module;

[0034] The continuous monitoring module includes installing an ultraviolet spectrum sensor (characteristic wavelength 205nm, to match the ultraviolet characteristic peak of acrylic acid) at the key node of the water inlet of the wastewater treatment system, so as to be able to continuously monitor the dynamic change of the acrylic acid concentration value in the water in real time. The factory workshop that generates acrylic acid wastewater can discharge the wastewater into the wastewater treatment system through the water inlet for treatment operations;

[0035] The data processing module includes setting an upper concentration threshold. The purpose of setting the upper concentration threshold is as follows: after the wastewater in the water inlet is discharged into the wastewater treatment system, it will undergo chemical dosing treatment to purify the water quality and remove harmful substances, so as to achieve the purpose of discharge standards. The wastewater treatment system can adjust the dosing amount according to the acrylic acid concentration in the wastewater. However, in order to avoid secondary pollution caused by the excessive use of chemical agents remaining in the water, there is an upper limit for the maximum usage amount of the dosing amount. Under normal circumstances, the acrylic acid concentration value in the wastewater volume discharged by the factory workshop that generates acrylic acid wastewater into the wastewater treatment system will be in a relatively stable state. If the concentration value in the water discharged into the wastewater treatment system exceeds the standard severely, it will exceed the limit of the drug treatment of the wastewater, making the acrylic acid wastewater unable to be effectively treated. Therefore, the upper concentration threshold should be set according to the upper limit that can be treated under the maximum dosing amount in the wastewater treatment system. Ideally, the acrylic acid concentration in the wastewater in the water inlet will always be within the upper concentration threshold. When the system monitors that the acrylic acid concentration in the water in the water inlet exceeds the upper concentration threshold, retrieve the water concentration data within the rollback time window to obtain the average discharge concentration within the rollback time window. The rollback time window is specifically a previous time period when the system monitors that the acrylic acid concentration in the water in the water inlet exceeds the upper concentration threshold. The average discharge concentration is calculated through the duration of the rollback time window and the change in the concentration values recorded within the rollback time window where n represents the total amount of concentration value data monitored by the system within the rollback time window, and C i represents the concentration value of the i-th monitoring data. For example, the duration of the rollback time window can be set to 3 minutes, and the interval for the system to continuously monitor the dynamic change of the acrylic acid concentration value in the water is once every 5 seconds. Within 3 minutes, 36 concentration value monitoring records can be continuously made. Suppose the system monitors that the acrylic acid concentration in the water in the water inlet exceeds the upper concentration threshold, and among the 36 concentration values within the rollback time window, 18 recorded concentration values are all 400mg / L, and the other 18 recorded concentration values are all 600mg / L. From this, the average discharge concentration within the rollback time window can be obtained as 500mg / L.

[0036] The concentration calculation module includes obtaining a temporary upper limit threshold through the concentration mean value and the upper limit threshold of concentration. Specifically, the temporary upper limit threshold Cu = (Cm - Cj)·k + Cm is obtained by using the upper limit threshold of concentration Cm and the concentration mean value Cj, where k is an adjustment factor less than 1. Then, the real-time concentration value of the water in the water inlet is compared with the temporary upper limit threshold, and corresponding responses are made according to the comparison results;

[0037] Furthermore, the significance of setting the temporary upper limit threshold is considered as follows: when acrylic acid wastewater is discharged into the treatment system for chemical dosing treatment, it will stay in the treatment pool for a certain period of time for water quality purification. Therefore, even if the system monitors that the acrylic acid concentration in the water in the water inlet exceeds the upper limit threshold of concentration, as long as the acrylic acid concentration in the wastewater discharged into the treatment system is relatively low within the rollback time window, the wastewater with a higher concentration and the wastewater with a lower concentration will be mixed in the treatment pool, so that the acrylic acid concentration value of the wastewater in the treatment pool can be balanced. Therefore, after comparing the real-time concentration value with the temporary upper limit threshold, if the real-time concentration value of acrylic acid in the water is less than or equal to the temporary upper limit threshold, it indicates that even though the acrylic acid concentration of the wastewater in the water inlet exceeds the upper limit threshold of concentration, the wastewater can be mixed with the previously lower-concentration wastewater after being discharged into the treatment system, so that the wastewater in the treatment pool can still be in a reasonable state of being purified by chemical agents. The system does not take any action but records the event; if the real-time concentration value of acrylic acid in the water is greater than the temporary upper limit threshold, it indicates that the acrylic acid concentration of the wastewater in the water inlet has seriously exceeded the upper limit threshold of concentration. After being mixed with the wastewater with a lower concentration in the treatment pool, it will also cause the wastewater in the treatment pool to be in a state of exceeding the acrylic acid concentration standard. The system should give a fault warning feedback to remind the operation and management personnel to stop discharging the wastewater in the water inlet, find out the reason for the excessive acrylic acid in the water inlet, or start the standby treatment plan. For example, it can be set that the upper limit threshold of concentration is 1000 mg / L, the average discharge concentration is 500 mg / L, and the adjustment factor k is taken as 0.6. Thus, the temporary upper limit threshold can be obtained as (1000 - 500)·0.6 + 1000 = 1300 mg / L. It is set that the acrylic acid concentration when the system monitors that the acrylic acid concentration in the water in the water inlet exceeds the upper limit threshold of concentration is 1200 mg / L. Since it is less than the temporary upper limit threshold of 1300 mg / L, the system only records the time and does not take any action. Through the design of the temporary upper limit threshold, the system can intelligently judge whether the current concentration has reached the level that requires immediate intervention. Even if the acrylic acid concentration temporarily exceeds the set upper limit, when the average concentration within the rollback time window is relatively low, the system can judge that these wastewaters can still achieve the purification effect after being mixed with the low-concentration wastewaters, and no unnecessary alarms or treatment stagnation will occur. This adaptive control method ensures the high efficiency and flexibility of the system.

[0038] The fault warning module includes a set fluctuation tolerance duration (i.e., the total duration during a wastewater treatment operation that the maximum acceptable acrylic acid concentration in the water exceeds the concentration upper limit threshold) and a fluctuation tolerance count (i.e., the total number of times during a wastewater treatment operation that the acrylic acid concentration in the water exceeds the concentration upper limit threshold). The wastewater treatment system will record the excess duration and the excess count of the acrylic acid concentration in the water exceeding the concentration upper limit threshold during the operation, and compare the excess duration and the excess count with their corresponding fluctuation tolerance duration and fluctuation tolerance count respectively, and make corresponding responses according to the comparison results. Specifically, the system will compare the excess duration of the acrylic acid concentration in the water exceeding the concentration upper limit threshold with the fluctuation tolerance duration, and at the same time compare the excess count of the acrylic acid concentration in the water exceeding the concentration upper limit threshold with the fluctuation tolerance count. When both the excess duration and the excess count are less than or equal to their corresponding fluctuation tolerance duration and fluctuation tolerance count, the system does not take any action. When both the excess duration and the excess count are greater than their corresponding fluctuation tolerance duration and fluctuation tolerance count, the system will give a fault warning feedback to remind the operation management personnel to find the reason for the excessive acrylic acid in the water inlet and make a response. Through the mechanism of setting the fluctuation tolerance duration and the fluctuation tolerance count, the system can allow the acrylic acid concentration in the wastewater at the water inlet to exceed the upper limit within a specified time and a fixed number of times. For such situations with a short duration or a small number of occurrences, the system can tolerate them, thus avoiding frequent alarms of the system caused by accidental fluctuations, reducing false alarms and unnecessary interventions. And when the over-standard situation exceeds the set tolerance range, the system can also timely require intervention or investigation. This method allows for flexible response according to the situation in actual operation, enhancing the management flexibility in the wastewater treatment process.

[0039] In addition, in the wastewater treatment system, if the wastewater concentration value at the water inlet is always close to the concentration upper limit threshold, it will cause the chemical dosage of the system to always be maintained at the highest level. Long-term high-dose use of the chemical not only increases the chemical usage cost, but also the chemical dosage in the purification tank is always at a high level, which may also lead to the accumulation of chemicals in the purification tank during the treatment process, affecting water quality parameters such as pH value and dissolved oxygen content, and having an impact on the final drainage water quality. Therefore, a high concentration threshold can also be set. The high concentration threshold is less than the concentration upper limit threshold, and it can take 85% to 95% of the concentration upper limit threshold. For example, if it takes 90%, the calculation method of the high concentration threshold is the concentration upper limit threshold * 90%. When the system monitors that the acrylic acid concentration in the water at the water inlet reaches the high concentration threshold, it starts to record the duration of reaching the high concentration threshold, obtains the total operation duration of this acrylic acid wastewater treatment, calculates the high chemical dosage ratio, and makes corresponding responses by comparing the high chemical dosage ratio with the chemical dosage ratio warning threshold.

[0040] Specifically, the high chemical dosage ratio is obtained by the duration Ns of the wastewater concentration at the water inlet reaching the high concentration threshold and the total operation duration Zs of the wastewater treatment If the ratio of the high-dose amount does not reach the warning threshold of the dosage ratio, it indicates that the acrylic acid concentration of the wastewater in the inlet maintains at a reasonable level during most of the time when the wastewater is discharged into the wastewater treatment system, and the system does not take any action. If the ratio of the high-dose amount reaches the warning threshold of the dosage ratio, it indicates that the acrylic acid concentration of the wastewater in the inlet maintains at a high concentration level very close to the upper concentration threshold during most of the time when the wastewater is discharged into the wastewater treatment system. Although it does not exceed the upper concentration threshold, it also causes the system to maintain the highest dosage of medicine in the treatment tank for a long time. At this time, the system should execute the dynamic adjustment strategy for concentration requirements.

[0041] The dynamic adjustment strategy for concentration requirements includes: subtracting the high-concentration threshold from the upper concentration threshold to obtain the threshold difference amount, dividing the threshold difference amount into the first half difference amount segment and the second half difference amount segment, and marking the first half difference amount segment and the second half difference amount segment as the level-2 difference amount segment and the level-1 difference amount segment respectively. When the ratio of the high-dose amount is greater than the warning threshold of the dosage ratio, the system will average all the recorded acrylic acid concentration values that exceed the high-concentration threshold, subtract this average value from the high-concentration threshold to obtain the concentration excess difference amount, and select the corresponding method for lowering the upper concentration threshold according to whether the concentration excess difference amount falls into the level-2 difference amount segment or the level-1 difference amount segment. The method for lowering the upper concentration threshold is: obtaining the upper concentration adjustment threshold through the high-concentration threshold Gn and the threshold difference amount Un. Among them, w represents the corresponding level difference amount segment into which the concentration excess difference amount falls, that is, w is 2 when it falls into the level-2 difference amount segment, and w is 1 when it falls into the level-1 difference amount segment. Taking the above embodiments as an example, it can be set that the upper concentration threshold is 1000 mg / L, the high-concentration threshold is 1000 mg / L * 90% = 900 mg / L, then the threshold difference amount is 100 mg / L, the warning threshold of the dosage ratio is set to 60%, and the total operation time of the wastewater treatment is 10 h. During the treatment operation, the system monitors that the acrylic acid concentration in the inlet water has maintained at 960 mg / L for the first 6 h. It can be obtained that the ratio of the high-dose amount has reached 60%, that is, it has reached the warning threshold of the dosage ratio. At this time, the system executes the dynamic adjustment strategy for concentration requirements. Since the threshold difference amount is 100 mg / L, it is set that 0 - 50 mg / L is the first half difference amount segment (level-2 difference amount segment), and 50 - 100 mg / L is the second half difference amount segment (level-1 difference amount segment). Since the concentration value exceeding the high-concentration threshold is 960 mg / L, the concentration excess difference amount can be obtained as 60 mg / L, which falls within the range of the level-1 difference amount segment. Therefore, the upper concentration adjustment threshold can be obtained as In this operation, the system will use the upper concentration adjustment threshold to replace the upper concentration threshold, so that during the treatment of acrylic acid wastewater, if it is monitored that the acrylic acid concentration in the inlet water is always close to the acceptable upper limit, resulting in the system maintaining the highest dosage of medicine, the upper concentration threshold can be dynamically adjusted, so as to respond to the system's long-term maintenance of a high dosage of medicine.

[0042] Generally speaking, the present invention aims to design an intelligent treatment system for acrylic acid wastewater. In the factory workshops where acrylic acid wastewater is generated, the concentration of acrylic acid in the wastewater will inevitably fluctuate. Such short-term and intermittent concentration over-standard fluctuations may cause the system to overreact, increasing unnecessary interventions and warnings. When the present invention detects that the concentration of acrylic acid in the water at the water inlet exceeds the standard, through the mechanism of the rollback time window, the concentration changes within a short period of time are smoothed, making the response to concentration fluctuations more flexible. Through the calculation of the temporary upper limit threshold, the system can intelligently judge whether the current concentration has reached the level that requires immediate intervention. Even if the acrylic acid concentration temporarily exceeds the set upper limit, but when the average concentration within the rollback time window is low, the system can judge that the wastewater can still achieve the purification effect after being mixed with low-concentration wastewater, without generating unnecessary alarms or treatment stagnation. Through the design of the fluctuation tolerance duration and the number of fluctuation tolerances, it is possible to effectively avoid overreacting to occasional short-term or few-number concentration fluctuations, improve the fault tolerance ability of the system, and establish clear tolerance criteria, enabling the system to issue an alarm only when intervention is truly needed, thus ensuring that the operator can detect and take corresponding measures in a timely manner. Moreover, the present invention can dynamically adjust the concentration upper limit threshold. Especially when the acrylic acid concentration in the wastewater is close to the upper limit for a long time, the sensitivity of the system warning is controlled by adjusting the threshold, avoiding the system running at a dosing amount close to the upper limit for a long time and reducing the possibility of chemical agent accumulation in the treatment tank.

[0043] An intelligent treatment method for acrylic acid wastewater provided by the present invention, as Figure 2 shown, the method includes the following steps: installing an ultraviolet spectrum sensor at the key node of the water inlet of the wastewater treatment system to continuously monitor the dynamic change of the acrylic acid concentration value in the water in real time; setting a concentration upper limit threshold. When it is detected that the acrylic acid concentration in the water at the water inlet exceeds the concentration upper limit threshold, retrieve the concentration data of the water in the rollback time window to obtain the average concentration of the discharged concentration within the rollback time window; obtain a temporary upper limit threshold through the average concentration and the concentration upper limit threshold, compare the real-time concentration value of the water in the monitored water inlet with the temporary upper limit threshold, and make corresponding responses according to the comparison results; set the fluctuation tolerance duration and the number of fluctuation tolerances, record the exceeding duration and the number of exceedances of the acrylic acid concentration in the water exceeding the concentration upper limit threshold during a treatment operation, and compare the exceeding duration and the number of exceedances with their corresponding fluctuation tolerance duration and the number of fluctuation tolerances respectively, and make corresponding responses according to the comparison results.

[0044] Embodiments disclosed by the present invention, the processes described above with reference to the flowcharts can be implemented as computer software programs. Embodiments disclosed by the present invention include a computer program product, which includes a computer program carried on a computer-readable medium, and the computer program contains program codes for executing the methods shown in the flowcharts. In such an embodiment, the computer program can be downloaded and installed from a network through a communication part, and / or installed from a removable medium. When the computer program is executed by a central processing unit, the above-mentioned functions defined in the methods of the present application are executed. It should be noted that the above-mentioned computer-readable medium in the present application can be a computer-readable signal medium or a computer-readable storage medium or any combination of the two. A computer-readable storage medium can be, for example, but not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination of the above. More specific examples of a computer-readable storage medium can include, but are not limited to: an electrical connection with one or more wire segments, a portable computer disk, a hard disk, a random access memory, a read-only memory, an erasable programmable read-only memory, an optical fiber, a portable compact disk read-only memory, an optical storage device, a magnetic storage device, or any suitable combination of the above. In the present application, a computer-readable storage medium can be any tangible medium that contains or stores a program, and the program can be used by or in combination with an instruction execution system, apparatus, or device. In the present application, a computer-readable signal medium can include a data signal propagated in a baseband or as part of a carrier wave, which carries computer-readable program codes. Such a propagated data signal can take various forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination of the above. A computer-readable signal medium can also be any computer-readable medium other than a computer-readable storage medium, and the computer-readable medium can send, propagate, or transmit a program for use by or in combination with an instruction execution system, apparatus, or device. The program codes contained on a computer-readable medium can be transmitted by any suitable medium, including but not limited to: wireless segments, wire segments, optical cables, RF, etc., or any suitable combination of the above.

[0045] The flowcharts and block diagrams in the accompanying drawings illustrate the possible architectures, functions, and operations of systems, methods, and computer program products according to various embodiments of the present invention. In this regard, each block in the flowchart or block diagram may represent a module, a segment of a program, or a part of code that contains one or more executable instructions for implementing a specified logical function. It should also be noted that in some alternative implementations, the functions noted in the blocks may occur in a different order than that noted in the accompanying drawings. For example, two consecutive blocks shown may actually be executed substantially in parallel, and they may sometimes be executed in the reverse order, depending on the functions involved. It should also be noted that each block in the block diagram and / or flowchart, and combinations of blocks in the block diagram and / or flowchart, may be implemented by a dedicated hardware-based system that performs the specified functions or operations, or may be implemented by a combination of dedicated hardware and computer instructions.

[0046] Those skilled in the art should understand that the above are only specific embodiments of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed in the present application should be covered by the protection scope of the present application.

Claims

1. An intelligent treatment system for acrylic wastewater, characterized in that, Including: A continuous monitoring module, which includes installing an ultraviolet spectrum sensor at the key node of the water inlet of the wastewater treatment system to continuously monitor the dynamic change of the acrylic acid concentration value in the water in real time; A data processing module, which includes setting a concentration upper limit threshold. When it is monitored that the acrylic acid concentration in the water at the water inlet exceeds the concentration upper limit threshold, retrieve the water concentration data in the rollback time window to obtain the average discharge concentration in the rollback time window; A concentration calculation module, which includes obtaining a temporary upper limit threshold through the average concentration and the concentration upper limit threshold, comparing the real-time concentration value of the acrylic acid in the water monitored at the water inlet with the temporary upper limit threshold, and making corresponding responses according to the comparison result; A fault warning module, which includes setting a fluctuation tolerance duration and a fluctuation tolerance number. During a treatment operation, record the exceeding duration and the exceeding number of times that the acrylic acid concentration in the water exceeds the concentration upper limit threshold, and compare the exceeding duration and the exceeding number of times with their corresponding fluctuation tolerance duration and fluctuation tolerance number respectively, and make corresponding responses according to the comparison result.

2. The intelligent treatment system for acrylic acid wastewater according to claim 1, wherein The rollback time window is specifically the previous time period when the system detects that the acrylic acid concentration in the water at the water inlet exceeds the upper concentration threshold value. The average discharge concentration is calculated through the duration of the rollback time window and the change in the recorded concentration values within the rollback time window. Among them, n represents the total amount of concentration value data detected by the system within the rollback time window, and C i represents the concentration value of the i-th monitoring data.

3. The intelligent treatment system for acrylic acid wastewater according to claim 2, wherein, The specific way to obtain the temporary upper limit threshold is: obtain the temporary upper limit threshold Cu = (Cm - Cj)·k + Cm through the concentration upper limit threshold Cm and the average concentration Cj, where k is an adjustment factor less than 1.

4. The intelligent treatment system for acrylic acid wastewater according to claim 3, characterized in that, After comparing the real-time concentration value with the temporary upper limit threshold, if the real-time concentration value of the acrylic acid in the water is less than or equal to the temporary upper limit threshold, the system does not take any action but records the event; if the real-time concentration value of the acrylic acid in the water is greater than the temporary upper limit threshold, the system should give a fault warning feedback to remind the operation management personnel to stop discharging the wastewater at the water inlet and find out the reason for the excessive acrylic acid at the water inlet.

5. The intelligent treatment system for acrylic acid wastewater according to claim 4, characterized in that, Compare the exceeding duration of the acrylic acid concentration in the water exceeding the concentration upper limit threshold with the fluctuation tolerance duration, and at the same time compare the exceeding number of times of the acrylic acid concentration in the water exceeding the concentration upper limit threshold with the fluctuation tolerance number. When both the exceeding duration and the exceeding number of times are less than or equal to their corresponding fluctuation tolerance duration and fluctuation tolerance number, the system does not take any action; when both the exceeding duration and the exceeding number of times are greater than their corresponding fluctuation tolerance duration and fluctuation tolerance number, the system gives a fault warning feedback to remind the operation management personnel to find out the reason for the excessive acrylic acid at the water inlet and make a response.

6. The intelligent treatment system for acrylic acid wastewater according to claim 1, wherein Set a high concentration threshold, which is less than the concentration upper limit threshold. When the system monitors that the acrylic acid concentration in the water at the water inlet reaches the high concentration threshold, start to record the duration of reaching the high concentration threshold, obtain the total operation duration of this acrylic acid wastewater treatment, calculate the high drug dosage ratio, and make corresponding responses by comparing the high drug dosage ratio with the drug dosage ratio warning threshold.

7. The intelligent acrylic acid wastewater treatment system according to claim 6, characterized in that, Obtain the high drug dosage ratio by the duration Ns when the wastewater concentration in the water inlet reaches the high concentration threshold and the total operation duration Zs of wastewater treatment If the high drug dosage ratio does not reach the drug dosage ratio warning threshold, the system does not take any action; if the high drug dosage ratio reaches the drug dosage ratio warning threshold, the system should execute the dynamic adjustment strategy for concentration requirements.

8. The intelligent treatment system for acrylic acid wastewater according to claim 7, characterized in that The dynamic adjustment strategy for the concentration requirement includes: obtaining the threshold difference by subtracting the concentration upper limit threshold from the high concentration threshold, dividing the threshold difference into the first half difference segment and the second half difference segment, and marking the first half difference segment and the second half difference segment as the level-2 difference segment and the level-1 difference segment respectively. When the ratio of the high drug amount to the total drug amount is greater than the drug amount ratio warning threshold, the system will calculate the average of all the acrylic acid concentration values that exceed the high concentration threshold, obtain the concentration excess difference by subtracting this average from the high concentration threshold, and select the corresponding concentration upper limit threshold reduction method according to whether the concentration excess difference falls into the level-2 difference segment or the level-1 difference segment; the concentration upper limit threshold reduction method is: obtaining the concentration upper limit adjustment threshold through the high concentration threshold Gn and the threshold difference Un Among them, w represents the corresponding level difference segment into which the concentration excess difference falls, that is, w is 2 when it falls into the level-2 difference segment and w is 1 when it falls into the level-1 difference segment.

9. A smart treatment method for acrylic wastewater, characterized in that, According to an intelligent treatment system for acrylic acid wastewater according to any one of claims 1-8, the method includes the following steps: Install an ultraviolet spectrum sensor at the key node of the water inlet of the wastewater treatment system to continuously monitor the dynamic change of the acrylic acid concentration value in the water in real time; Set a concentration upper limit threshold. When it is monitored that the acrylic acid concentration in the water at the water inlet exceeds the concentration upper limit threshold, retrieve the water concentration data in the rollback time window to obtain the average discharge concentration in the rollback time window; Obtain a temporary upper limit threshold through the concentration mean value and the concentration upper limit threshold, compare the real-time concentration value of the water in the water inlet monitored with the temporary upper limit threshold, and make corresponding responses according to the comparison result; Set the fluctuation tolerance duration and the fluctuation tolerance times. During a treatment operation, record the exceeding duration and the exceeding times when the acrylic acid concentration in the water exceeds the concentration upper limit threshold, and compare the exceeding duration and the exceeding times with their corresponding fluctuation tolerance duration and fluctuation tolerance times respectively, and make corresponding responses according to the comparison result.

10. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a computer program, and the computer program is executed by a processor to implement an intelligent treatment system for acrylic acid wastewater according to any one of the above claims 1-8.

Images