Water treatment agent performance evaluation method and system based on component analysis

Abstract

The invention relates to the technical field of water treatment, and provides a water treatment agent performance evaluation method and system based on component analysis, and the method comprises the steps: obtaining the pH value of sewage and wastewater in a treatment period, analyzing to obtain a change curve, analyzing to obtain a neutralizing capacity value, and identifying a high-neutral water treatment agent; the method comprises the following steps: acquiring the pH value variation of sewage and wastewater of a high and medium neutralization water treatment agent in a plurality of sub-cycles, analyzing to obtain an effective regulation ratio, acquiring a time point and a pH value corresponding to an intersection point of a curve and a datum line, analyzing to obtain a regulation stable value of the water treatment agent, and analyzing a neutralization capacity value and the regulation stable value. The processing capacity of the water treatment agent can be analyzed and judged, the processing performance values of the water treatment agent in multiple processing periods can be obtained, the processing variable coefficient can be obtained through analysis, the Euclidean distance average value can be obtained through calculation, and the performance comprehensive value can be obtained through comprehensive analysis.

Description

Technical Field

[0001] The present invention belongs to the technical field of water treatment, and specifically relates to a method and system for evaluating the performance of water treatment agents based on component analysis. Background Art

[0002] With the continuous development of water treatment technology, the requirements for water use are constantly increasing. Treating and reusing sewage and wastewater has become a development trend, and the performance requirements for water treatment agents are also getting higher and higher.

[0003] In the prior art, there are a wide variety of water treatment agents, which are widely used in fields such as drinking water treatment, industrial water treatment, and wastewater treatment. Water treatment agents play a key role in the water treatment process. Adjusting the pH value of sewage and wastewater has an important impact on water treatment in different aspects. The precipitation of metal ions is easier and faster within a specific pH value range, and the disinfection effect of common disinfectants is also affected by the pH value. The bactericidal and viricidal effect of disinfectants is better at a lower pH value. Therefore, during the water treatment process with water treatment agents, the pH value of sewage and wastewater fluctuates. In order to make the pH value of the treated sewage and wastewater reach a stable and reasonable range, the water treatment agent will effectively adjust the pH value of the sewage and wastewater during the treatment process to stabilize the pH value of the sewage and wastewater within the standard range. Evaluating the pH value adjustment ability of water treatment agents plays a key role in the performance evaluation of water treatment agents. At present, effectively improving the accuracy and timeliness of the evaluation of the neutralization ability of water treatment agents provides a more comprehensive, accurate, and scientific basis for the evaluation of the acid-base treatment performance of water treatment agents. It is impossible to select a more scientific, effective, and high-performance water treatment agent, which affects the treatment process.

[0004] Therefore, the present invention provides a method and system for evaluating the performance of water treatment agents based on component analysis. Summary of the Invention

[0005] The purpose of the present invention is to provide a method and system for evaluating the performance of water treatment agents based on component analysis to solve at least one of the above-mentioned prior art problems.

[0006] In the first aspect, the present invention provides a method for evaluating the performance of water treatment agents based on component analysis, including: Construct a change curve of pH value with respect to time according to the pH value of sewage and wastewater within the treatment period; Process and analyze the change curve of pH value with respect to time to obtain a neutralization ability value, and identify water treatment agents through the neutralization ability value to obtain high-neutralization water treatment agents; Divide the treatment period corresponding to the high-neutralization water treatment agent into multiple sub-periods, and calculate the change rate of the pH value of sewage and wastewater within the sub-period according to the change amount of the pH value of sewage and wastewater within the sub-period; By processing and analyzing the change rate of the pH value of the sewage and wastewater in each sub-cycle, a relative change value is obtained. Through analysis, an effective regulation ratio and a stable relative value are obtained. The regulation stability value is calculated, and combined with the neutralization ability value corresponding to the high-neutralization water treatment agent, the treatment performance value is calculated and output. The high-neutralization water treatment agent is identified through the treatment performance value, and a high-performance water treatment agent is obtained. The treatment performance values of the high-performance water treatment agent in multiple treatment cycles are obtained. The treatment coefficient of variation is analyzed. The average Euclidean distance is calculated based on the pH values of the sewage and wastewater at the beginning and end of the treatment cycle. Through comprehensive analysis, a performance comprehensive value is obtained to judge the performance stability of the water treatment agent.

[0007] In a second aspect, the present invention provides a water treatment agent performance evaluation system based on component analysis, including: Adjustment data collection and collation module: Collect and obtain the pH value of the sewage and wastewater and the corresponding time during the sewage and wastewater treatment cycle. According to the pH value of the sewage and wastewater during the treatment cycle, a change curve of the pH value with respect to time is constructed. Neutralization ability value analysis module: Process and analyze the change curve of the pH value with respect to time to obtain the neutralization ability value. The high-neutralization water treatment agent is identified through the neutralization ability value, and a high-neutralization water treatment agent is obtained. Regulation stability value analysis module: By processing and analyzing the change rate of the pH value of the sewage and wastewater in each sub-cycle, a relative change value is obtained. Through analysis, an effective regulation ratio and a stable relative value are obtained, and the regulation stability value is calculated. Treatment performance value analysis module: Combine the neutralization ability value corresponding to the high-neutralization water treatment agent, calculate and output the treatment performance value; identify the high-performance water treatment agent through the treatment performance value. Performance comprehensive value analysis module: Obtain the treatment performance values of the high-performance water treatment agent in multiple treatment cycles, analyze the treatment coefficient of variation, calculate the average Euclidean distance based on the pH values of the sewage and wastewater at the beginning and end of the treatment cycle, and comprehensively analyze to obtain the performance comprehensive value to judge the performance stability of the water treatment agent.

[0008] The beneficial effects of the present invention are as follows: 1. By monitoring the pH value of the sewage and wastewater, the neutralization effect of the water treatment agent during the treatment cycle is dynamically evaluated, improving the accuracy and timeliness of the evaluation. Constructing an X-Y two-dimensional coordinate system and drawing the pH value change curve facilitate professional technicians to analyze and judge the change process of alkalinity. By calculating the acid-base deviation value and the acid-base outlier value, a quantitative evaluation of the deviation degree and frequency of the sewage and wastewater acidity and alkalinity is realized, providing a reliable basis for the calculation of the neutralization ability value. The proposal of the neutralization ability value helps to optimize the water treatment process, effectively improving the evaluation accuracy of the neutralization ability of the water treatment agent, and providing strong support for the optimization of the water treatment process and the improvement of water quality standards.

[0009] 2. By analyzing by subdividing the treatment cycle into multiple sub - cycles, the change details of the pH value of sewage and wastewater can be captured more precisely, thereby more accurately evaluating the effect of water treatment agents at each stage, which helps to evaluate the overall regulation effect and efficiency of water treatment agents. By calculating the regulation stability value, the stability degree after neutralization of water treatment agents is evaluated, that is, whether the pH value of sewage and wastewater can remain stable after reaching the standard neutral region. Based on the neutralization ability value and the regulation stability value, the treatment performance value is analyzed and identified, and the comprehensive performance value is obtained through comprehensive analysis. The stability of the performance is analyzed, which provides a more comprehensive, accurate and scientific basis for the evaluation of the treatment performance of water treatment agents, helps to improve the water treatment effect and efficiency, reduce the treatment cost, and has important practical application value. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0011] Figure 1 is the step - flow chart of the performance evaluation method of water treatment agents based on component analysis in Embodiment 1 of the present invention; Figure 2 is the system - flow chart of the performance evaluation system of water treatment agents based on component analysis in Embodiment 3 of the present invention; Figure 3 is the structural schematic diagram of the performance evaluation device of water treatment agents based on component analysis in Embodiment 4 of the present invention; Figure 4 is the example pH - value change diagram of the performance evaluation method of water treatment agents based on component analysis in Embodiment 1 of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0012] In order to enable those skilled in the art to better understand the solutions of the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the 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 the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention. Embodiment 1

[0013] Figure 1The figure is a flowchart of a performance evaluation method for water treatment agents based on component analysis provided in Embodiment 1 of the present invention. The embodiments of the present invention are applicable to the performance evaluation of water treatment agents. The performance evaluation method for water treatment agents based on component analysis can be executed by a performance evaluation system for water treatment agents based on component analysis.

[0014] As Figure 1 shown, the performance evaluation method for water treatment agents based on component analysis according to the embodiments of the present invention includes: Step 1: Obtain the pH value of the sewage and wastewater during the treatment period through a pH meter, analyze to obtain the change curve of the pH value of the sewage and wastewater with respect to time during the treatment period, analyze the acid-base deviation value and acid-base outlier value through the change curve, calculate the neutralization capacity value, which is beneficial to analyzing and judging the neutralization capacity of the water treatment agent, identify the water treatment agent through the neutralization capacity value, and obtain a high-neutralization water treatment agent; It should be noted that the treatment period represents the time period from when the sewage and wastewater start to be treated by the water treatment agent until it reaches a relatively stable state, which is set by the professional technical personnel of the present invention according to historical experience; In some embodiments, with the time corresponding to the treatment period as the X-axis and the pH value of the sewage and wastewater as the Y-axis, an X-Y two-dimensional coordinate system is established; In the X-Y two-dimensional coordinate system, mark and connect the pH values of the sewage and wastewater at different times during the treatment period to obtain the change curve of the pH value of the sewage and wastewater; Taking the two endpoint values of the standard range of the pH value of the sewage and wastewater as reference values, construct reference lines in the X-Y two-dimensional coordinate system. Among them, the reference lines include an acidic reference line and an alkaline reference line. The endpoint value corresponding to the acidic reference line is the minimum value of the pH value within the standard range of the pH value of the sewage and wastewater, and the endpoint value corresponding to the alkaline reference line is the maximum value of the pH value within the standard range of the pH value of the sewage and wastewater; Mark the area enclosed by the acidic reference line and the alkaline reference line in the X-Y two-dimensional coordinate system as the standard neutral area; Obtain the pH value of the sewage and wastewater after the treatment period, perform a difference operation on the pH value of the sewage and wastewater after the treatment period and the pH neutral value and take the absolute value to obtain the acid-base deviation value PC, which is beneficial to judging the deviation degree between the final pH value of the sewage and wastewater and the pH neutral value after the end of the treatment period; Among them, the pH neutral value represents the pH value when the hydrogen ion concentration and hydroxide ion concentration in the sewage and wastewater are equal, that is, the pH value is equal to 7; Obtain the area outside the neutral range enclosed by the pH value change curve of the sewage and wastewater during the treatment period and the neutral range to obtain the outlier area; Perform a ratio operation on the obtained outlier area and the area enclosed by the standard neutral area in the pH value change curve to obtain the outlier area ratio; Obtain the duration between the time point corresponding to the intersection of the pH value change curve and the reference line and the start time point of the processing cycle to get the outlier duration; Perform a ratio process on the obtained outlier duration and the processing cycle duration to get the outlier duration ratio; Obtain the outlier area ratio and outlier duration ratio of multiple processing cycles, sort the obtained outlier area ratios from smallest to largest, sort the obtained outlier duration ratios from smallest to largest, and obtain the outlier area ratio and outlier duration ratio data set; Determine the reasonable range of the outlier area ratio and outlier duration ratio by the box plot method; Specifically, calculate the lower quartile Q1. If n is the size of the data set, when n = 4m (m is an integer), Q1 = ; when n = 4m + 1, Q1 = ; when n = 4m + 2, Q1 = ; when n = 4m + 3, Q1 = ; Calculate the upper quartile Q3. If n is the size of the data set, when n = 4m (m is an integer), Q3 = ; when n = 4m + 1, Q3 = ; when n = 4m + 2, Q3 = ; when n = 4m + 3, Q3 = ; Calculate the interquartile range IQR = Q3 - Q1; For any data point x, where x represents the point corresponding to the outlier area ratio or outlier duration ratio in the data set, if x < Q1 - 1.5IQR or x > Q3 + 1.5IQR, then mark it as an abnormal data and remove the abnormal data from the outlier area ratio data set and the outlier duration ratio data set; Take the average of the outlier area ratio obtained after removing the abnormal data, take the average of the outlier duration ratio obtained after removing the abnormal data, and perform a summation process on the average of the outlier area ratio and the average of the outlier duration ratio to get the acid-base outlier value LQ; Among them, the standard neutral region in the pH value change curve represents the region enclosed by the range between the acidic reference line and the alkaline reference line in the X - Y two-dimensional coordinate system, that is, the range of pH value from 6.5 to 7.5, which is suitable for the survival of most organisms and the progress of most chemical reactions. The area enclosed by the standard neutral region in the pH value change curve represents the rectangular area enclosed by the acidic reference line and the alkaline reference line in the X - Y two-dimensional coordinate system; Analyze and process the obtained acid-base deviation value PC and acid-base outlier value LQ, and obtain the neutralization ability value ZH through the formula where, and are both preset proportionality coefficients, The value of is 0.836. The neutralization ability value of the water treatment agent is conducive to analyzing and judging the neutralization ability of the water treatment agent; It should be noted that the neutralization ability value ZH is calculated from the acid-base deviation value PC and the acid-base outlier value LQ. The smaller the acid-base deviation value, the closer the pH value of the sewage and wastewater is to the pH neutral value after being treated with the water treatment agent. The smaller the acid-base outlier value, the higher the efficiency of the water treatment agent in adjusting the pH value of the sewage and wastewater. The acid-base deviation value and the acid-base outlier value as a whole reflect the ability of the water treatment agent to adjust the pH value, that is, the larger the neutralization ability value, the greater the ability of the water treatment agent to neutralize acids and bases, which is conducive to analyzing and judging the neutralization efficiency of the water treatment agent; Based on the analyzed neutralization ability value, analyze and judge the high or low neutralization ability of the water treatment agent; Specifically, obtain the neutralization ability value of the water treatment agent and compare the obtained neutralization ability value with a preset neutralization ability threshold; If the neutralization ability value is greater than or equal to the neutralization ability threshold, it means that the water treatment agent is a high-neutralization water treatment agent; If the neutralization ability value is less than the neutralization ability threshold, it means that the water treatment agent is a low-neutralization water treatment agent; Exemplarily, set the treatment cycle to 8 hours, the pH value corresponding to the acidic baseline is 6.5, the pH value corresponding to the alkaline baseline is 7.5, and the pH value change of the sewage and wastewater is as Figure 4 shown. The analyzed acid-base deviation value PC is 0.2. Through the formula calculate the acid-base outlier value LQ to be 1.1. f(x) is the curve function from 0 to 5 hours. Through comprehensive analysis, the neutralization ability value ZH is , and the preset neutralization ability threshold is 0.8. That is, the calculated neutralization ability value ZH is greater than the preset neutralization ability threshold, which means that the water treatment agent is a high-neutralization water treatment agent; The technical solution of the embodiment of the present invention is as follows: Obtain the pH value of the sewage and wastewater through a pH meter, analyze to obtain the change curve of the pH value, obtain the acid-base deviation value and the acid-base outlier value through curve analysis, and analyze and process the obtained acid-base deviation value and the acid-base outlier value to obtain the neutralization ability value, which is conducive to analyzing and judging the neutralization ability of the water treatment agent; By monitoring the pH value of the sewage and wastewater, dynamically evaluate the neutralization effect of the water treatment agent during the treatment cycle, improve the accuracy and timeliness of the evaluation, construct an X-Y two-dimensional coordinate system and draw the pH value change curve, which is convenient for professional and technical personnel to analyze and judge the change process of alkalinity. By calculating the acid-base deviation value and the acid-base outlier value, the quantitative evaluation of the deviation degree and frequency of the acidity and alkalinity of the sewage and wastewater is realized, providing a reliable basis for the calculation of the neutralization ability value. The proposal of the neutralization ability value helps to optimize the water treatment process, effectively improve the evaluation accuracy of the neutralization ability of the water treatment agent, and provides strong support for the optimization of the water treatment process and the improvement of water quality standards. Example 2

[0015] As Figure 1 shown, the method for evaluating the performance of a water treatment agent based on component analysis according to the embodiment of the present invention includes: Step 2: Perform optimization analysis based on the obtained water treatment agent with high neutralization ability. Divide the treatment cycle of the water treatment agent into multiple sub-cycles on average, obtain the change amount of the pH value of the sewage and wastewater within the sub-cycle, analyze to obtain the change rate of the pH value of the sewage and wastewater within the sub-cycle, calculate to obtain the relative change value, analyze the obtained relative change value, calculate and process to obtain the effective regulation ratio, analyze and judge the proportion of effective regulation of the water treatment agent during the treatment cycle, obtain the time point and pH value corresponding to the intersection point of the curve and the reference line, calculate to obtain the stable relative value, and calculate to obtain the regulation stability value of the water treatment agent; Specifically, based on the obtained change curve of the pH value of the sewage and wastewater, divide the obtained treatment cycle into multiple sub-cycles on average, and obtain the pH value change curve within each sub-cycle; For any sub-cycle, perform a difference operation on the pH value corresponding to the start time point of the sub-cycle and the pH value corresponding to the end time point of the sub-cycle and take the absolute value to obtain the change amount of the pH value of the sub-cycle; Perform a ratio operation on the analyzed change amount of the pH value of the sub-cycle and the duration corresponding to the sub-cycle to obtain the change rate of the pH value of the sub-cycle; Perform a ratio operation on the analyzed change rate of the pH value of the sub-cycle and the preset standard change rate to obtain the relative change value; Mark the relative change value and the corresponding time period in the coordinate system, analyze the abnormal data of the relative change value, and remove the abnormal relative change value to ensure the rationality of the data; Specifically, calculate the local outlier factor of the relative change value. For any point p corresponding to a relative change value, find its k nearest neighbors and determine the maximum distance among the neighbors as the k-distance of p, where k is the preset number of neighbors; Define the larger value between the distance from point p to point o and the k-distance of point o as the k-reachability distance; For any point p corresponding to a relative change value, calculate its average reachability distance relative to its k nearest neighbors, and take the reciprocal to obtain the local reachability density lrd(p); Obtain the set of all points within the k-distance of point p, including the points on the k-distance, to get the k-distance neighborhood N k (p), where point o N k (p); Obtain the local outlier factor through the formula to analyze and judge the rationality of the relative change value; If the local outlier factor is greater than or equal to the preset outlier threshold, it indicates that the relative change value is abnormal, and the abnormal relative change value is removed; If the local outlier factor is less than the preset outlier threshold, it indicates that the relative change value is normal, and the normal relative change value is retained; Analyze and compare the obtained relative change value with the preset relative change threshold to analyze and obtain the change signal of the sewage and wastewater, which is conducive to analyzing and judging the effective change sub-period of the pH value adjustment of the sewage and wastewater; Specifically, if the obtained relative change value is greater than or equal to the preset relative change threshold, it is marked as an effective change signal, indicating that the water treatment agent makes a significant and effective adjustment to the pH value of the sewage and wastewater; If the obtained relative change value is less than the preset relative change threshold, it is marked as a slow change signal, indicating that the water treatment agent makes a relatively slow adjustment to the pH value of the sewage and wastewater and does not reach an obvious change; Count the number of effective change signals obtained within the treatment period, and perform a ratio process on the number of effective change signals within the treatment period and the number of all change signals within the treatment period to obtain the effective adjustment ratio YX; Obtain the horizontal and vertical coordinate data of the first intersection point of the pH value change curve and the reference line, that is, the pH value of the sewage and wastewater corresponding to the intersection point and the treatment time point; perform a difference process on the end time point of the treatment period and the treatment time point of the sewage and wastewater corresponding to the obtained intersection point to obtain the stable duration; Perform a difference process on the pH value of the sewage and wastewater corresponding to the end of the obtained treatment period and the pH value of the sewage and wastewater corresponding to the intersection point and take the absolute value to obtain the pH stable change value; It should be noted that when the pH value of the sewage and wastewater reaches the pH value range corresponding to the standard neutral region, the water treatment agent stops being injected to prevent the incomplete neutralization of the water treatment agent and the sewage and wastewater, resulting in too much injection of the water treatment agent and causing the pH value of the sewage and wastewater to be too low or too high; The obtained stable pH change value and stable duration are ratio-processed and then multiplied by the treatment cycle to obtain the stable relative value XD; The obtained effective regulation ratio YX and stable relative value XD are summed to obtain the regulation stability value WD, which is conducive to analyzing and judging the stability degree after the neutralization of the water treatment agent; Step 3: Analyze and process the obtained neutralization capacity value and regulation stability value to obtain the treatment performance value, analyze and judge the treatment capacity of the water treatment agent, identify the high-neutralization water treatment agent through the treatment performance value, obtain the treatment performance values of the high-performance water treatment agent in multiple treatment cycles, analyze and obtain the treatment coefficient of variation and the average Euclidean distance, judge the performance volatility of the water treatment agent, and comprehensively calculate to obtain the performance comprehensive value; Based on the analyzed neutralization capacity value ZH and regulation stability value WD, through the formula the treatment performance value is obtained, where and are both preset correlation coefficients, the value of is 0.433, the value of is 0.427; It should be noted that the treatment performance value XN is calculated from the neutralization capacity value ZH and the regulation stability value WD. The larger the neutralization capacity value, the stronger the neutralization capacity of the water treatment agent and the higher the neutralization efficiency of the water treatment agent. The larger the regulation stability value, the stronger the stability after the neutralization of the water treatment agent. The neutralization capacity value and the regulation stability value as a whole reflect the performance of the water treatment agent in treating sewage and wastewater, that is, the larger the treatment performance value, the better the performance of the water treatment agent in treating sewage and wastewater; Sort the obtained treatment performance values from large to small and generate a table, and identify and judge the treatment performance level of the high-neutralization water treatment agent through the treatment performance threshold; If the treatment performance value is greater than or equal to the treatment performance threshold, it indicates that the water treatment agent is a high-performance water treatment agent; If the treatment performance value is less than the treatment performance threshold, it indicates that the water treatment agent is a low-performance water treatment agent; Based on the obtained high-performance water treatment agent, obtain the treatment performance values of the same high-performance water treatment agent in multiple treatment cycles, perform mean processing on the obtained treatment performance values in multiple treatment cycles to obtain the treatment performance average value NP, and analyze and obtain the standard deviation of the treatment performance values in multiple treatment cycles to obtain the treatment performance standard deviation; The standard deviation of the obtained treatment performance is ratio-processed with the average value of the treatment performance to obtain the performance variation coefficient BY, and the fluctuation of the treatment performance value of the water treatment agent is analyzed and judged; Based on any high-performance water treatment agent, the pH values of the sewage and wastewater at the start and end of multiple treatment cycles are obtained. The pH values of the sewage and wastewater at the start and end of the same treatment cycle are combined to obtain an acid-base data group. By calculation, the mean group of all acid-base data groups is obtained. The obtained acid-base data group is analyzed with the mean group of all acid-base data groups, and the Euclidean distance between the acid-base data group and the mean group of all acid-base data groups is calculated; It should be noted that the mean group of all acid-base data groups represents a data group composed of the average value of the pH values of the sewage and wastewater at the start of all treatment cycles and the average value of the pH values of the sewage and wastewater at the end of all treatment cycles; The calculated Euclidean distances are averaged to obtain the average Euclidean distance OS, and the difference degree of the data of multiple treatment cycles is analyzed; Exemplarily, the obtained acid-base data groups are: (3, 6.8), (3, 6.8), (3, 6.9), (3, 6.8), (3, 6.85), (3, 6.75), (3, 6.85), (3, 6.9). For the sewage and wastewater at the start of the same sewage treatment cycle, the pH value remains unchanged. The calculated mean group of all acid-base data groups is: (3, 6.83125), and the calculated average Euclidean distance is 0.03125; The obtained average treatment performance NP, treatment variation coefficient BY, and average Euclidean distance OS are comprehensively analyzed through the formula to obtain the performance comprehensive value ZH, where and are both preset proportionality coefficients, the value of is 0.874, the value of is 0.163; The technical solution of the embodiment of the present invention is as follows: The treatment cycle of the water treatment agent is evenly divided into multiple sub - cycles, the change amount of the pH value of the sewage and wastewater within the sub - cycle is obtained, the change rate of the pH value of the sewage and wastewater within the sub - cycle is analyzed, the obtained change rate of the pH value is analyzed and compared with the preset standard change rate to obtain a relative change value, the obtained relative change value is analyzed and compared with the preset relative change threshold, the effective adjustment ratio is analyzed and obtained through processing, the time point and pH value corresponding to the intersection point of the curve and the reference line are obtained, the adjustment stability value of the water treatment agent is analyzed, the obtained neutralization ability value and adjustment stability value are analyzed and processed to obtain a treatment performance value, the treatment performance values of the high - neutralization water treatment agent in multiple treatment cycles are obtained, the treatment coefficient of variation is analyzed, and the comprehensive performance value is obtained through comprehensive analysis; By subdividing the treatment cycle into multiple sub - cycles for analysis, the change details of the pH value of the sewage and wastewater can be captured more precisely, so as to more accurately evaluate the effect of the water treatment agent in each stage, which helps to evaluate the overall adjustment effect and efficiency of the water treatment agent. By calculating the adjustment stability value, the stability degree after neutralization of the water treatment agent is evaluated, that is, whether the pH value of the sewage and wastewater can remain stable after reaching the standard neutral region. Based on the neutralization ability value and the adjustment stability value, the treatment performance value is analyzed and processed, the comprehensive performance value is obtained through comprehensive analysis, and the stability of the performance is analyzed, which provides a more comprehensive, accurate and scientific basis for the evaluation of the treatment performance of the water treatment agent, helps to improve the water treatment effect and efficiency, reduce the treatment cost, and has important practical application value. Embodiment 3

[0016] As Figure 2 shown, the performance evaluation system of the water treatment agent based on component analysis according to the embodiment of the present invention includes: Adjustment data collection and collation module: Collect and obtain the pH value of the sewage and wastewater and the corresponding time within the sewage and wastewater treatment cycle, and construct a change curve of the pH value with respect to time according to the pH value of the sewage and wastewater within the treatment cycle; Neutralization ability value analysis module: Process and analyze the change curve of the pH value with respect to time, obtain the neutralization ability value, identify the water treatment agent through the neutralization ability value, and obtain the high - neutralization water treatment agent; Adjustment stability value analysis module: Through processing and analyzing the change rate of the pH value of the sewage and wastewater within each sub - cycle, obtain a relative change value, analyze and obtain an effective adjustment ratio and a stable relative value, and calculate and obtain the adjustment stability value; Treatment performance value analysis module: Combine the neutralization ability value corresponding to the high - neutralization water treatment agent, calculate and output the treatment performance value; Identify the high - performance water treatment agent through the treatment performance value; Comprehensive performance value analysis module: Obtain the treatment performance values of the high - performance water treatment agent in multiple treatment cycles, analyze the treatment coefficient of variation, analyze and obtain the comprehensive performance value according to the treatment coefficient of variation, and judge the performance stability of the water treatment agent. Example 4

[0017] Reference Figure 3 , an embodiment of the present invention further provides a computer device 3, including: a memory 302, a processor 301, and a computer program 303 stored on the memory 302. When the computer program 303 is executed on the processor 301, it implements the method for evaluating the performance of water treatment agents based on component analysis as described in any one of the above methods.

[0018] The computer device 3 may be a computing device such as a desktop computer, a notebook, a palm computer, and a cloud server. The computer device 3 includes, but is not limited to, a memory 302, a processor 301, and a computer program 303 stored on the memory 302; those skilled in the art can understand; Figure 3 This is only an example of the computer device 3 and does not constitute a limitation on the computer device 3. It may include more or fewer components than shown in the figure, or combine certain components, or different components. For example, it may also include input / output devices, network access devices, etc.

[0019] The so-called processor 301 may be a central processing unit (CPU). The processor 301 may also be other general-purpose processors, digital signal processors (DSPs), application specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor may be a microprocessor or the processor may also be any conventional processor, etc.

[0020] In some embodiments, the memory 302 may be an internal storage unit of the computer device 3, such as a hard disk or memory of the computer device 3. In other embodiments, the memory 302 may also be an external storage device of the computer device 3, such as a plug-in hard disk, a Smart Media Card (SMC), a Secure Digital (SD) card, a Flash Card, etc. equipped on the computer device 3. Further, the memory 302 may also include both the internal storage unit and the external storage device of the computer device 3. The memory 302 is used to store an operating system, application programs, a boot loader, data, and other programs, such as the program code of the computer program. The memory 302 may also be used to temporarily store data that has been output or is to be output. Embodiment 5

[0021] An embodiment of the present invention also provides a computer-readable storage medium, on which a computer program is stored. When the computer program is run by a processor, it implements the method for evaluating the performance of a water treatment agent based on component analysis as described in any one of the above methods. In this embodiment, if the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on such an understanding, to implement all or part of the processes in the above embodiment methods of the present application, a computer program can be used to instruct relevant hardware to complete. The computer program can be stored in a computer-readable storage medium. When the computer program is executed by a processor, it can implement the steps of the above various method embodiments. Among them, the computer program includes computer program code, and the computer program code can be in the form of source code, object code, an executable file, or some intermediate form, etc. The computer-readable medium may at least include: any entity or device that can carry the computer program code to the photographing device / terminal device, a recording medium, a computer memory, a read-only memory (ROM), a random access memory (RAM), an electrical carrier signal, a telecommunication signal, and a software distribution medium. For example, a USB flash drive, a mobile hard disk, a magnetic disk, or an optical disc, etc. In some jurisdictions, according to legislation and patent practice, the computer-readable medium may not be an electrical carrier signal and a telecommunication signal.

[0022] In the above embodiments, the descriptions of the various embodiments have their own focuses. For parts not detailed or recorded in a certain embodiment, reference may be made to the relevant descriptions of other embodiments.

[0023] Those of ordinary skill in the art will appreciate that the units and algorithm steps of each example described in connection with the embodiments disclosed herein can be implemented in electronic hardware, or in a combination of computer software and electronic hardware. Whether these functions are executed in hardware or software depends on the specific application and design constraints of the technical solution. A person skilled in the art can use different methods for each specific application to implement the described functions, but such implementation should not be considered to exceed the scope of this application.

[0024] In the embodiments disclosed in this application, it should be understood that the disclosed apparatus / terminal device and method can be implemented in other ways. For example, the apparatus / terminal device embodiments described above are merely illustrative. For example, the division of the modules or units is only a logical function division, and there may be other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the displayed or discussed couplings or direct couplings or communication connections to each other can be through some interfaces, and the indirect couplings or communication connections of the devices or units can be in electrical, mechanical or other forms.

[0025] The units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or may be distributed to multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0026] The above formulas are all dimensionless and take their numerical values for calculation. The formulas are obtained by collecting a large amount of data for software simulation to obtain a formula that is closest to the actual situation. The preset parameters in the formulas are set by those skilled in the art according to the actual situation.

[0027] The above has described in detail an embodiment of the present invention, but the content described is only a preferred embodiment of the present invention and cannot be considered as limiting the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the application of the present invention should still fall within the scope covered by the patent of the present invention.

Claims

1. A method for evaluating the performance of a water treatment agent based on component analysis, characterized in that: Including: Construct a change curve of pH value with respect to time based on the pH value of the sewage and wastewater within the treatment cycle to obtain a pH value change curve; Process and analyze the change curve of pH value with respect to time to obtain a neutralization ability value, identify the water treatment agent through the neutralization ability value, and obtain a high-neutralization water treatment agent; Divide the treatment cycle corresponding to the high-neutralization water treatment agent into multiple sub-cycles, and calculate the change rate of the pH value of the sewage and wastewater within the sub-cycle according to the change amount of the pH value of the sewage and wastewater within the sub-cycle; Through processing and analyzing the change rate of the pH value of the sewage and wastewater within each sub-cycle, obtain a relative change value, analyze and obtain an effective regulation ratio and a stable relative value, calculate and obtain a regulation stability value, and combine it with the neutralization ability value corresponding to the high-neutralization water treatment agent to calculate and output a treatment performance value; Identify the high-neutralization water treatment agent through the treatment performance value to obtain a high-performance water treatment agent; Obtain the treatment performance values of the high-performance water treatment agent in multiple treatment cycles, analyze and obtain a treatment coefficient of variation, calculate the average Euclidean distance according to the pH values of the sewage and wastewater at the beginning and end of the treatment cycle, comprehensively analyze and obtain a performance comprehensive value, and judge the performance stability of the water treatment agent.

2. The water treatment agent performance evaluation method based on component analysis according to claim 1 is characterized in that: The specific process for obtaining the neutralization ability value is as follows: Mark the area enclosed by the acidic reference line and the alkaline reference line in the X-Y two-dimensional coordinate system as the standard neutral area; Obtain the pH value after the sewage and wastewater treatment cycle, perform a difference operation on the pH value after the sewage and wastewater treatment cycle and the pH neutral value and take the absolute value to obtain an acid-base deviation value PC; Obtain the area outside the standard neutral area enclosed by the pH value change curve of the sewage and wastewater treatment cycle and the standard neutral area to obtain an outlier area; Perform a ratio operation on the obtained outlier area and the area enclosed by the standard neutral area in the pH value change curve to obtain an outlier area ratio; Obtain the duration from the time point corresponding to the intersection of the pH value change curve and the reference line to the start time point of the treatment cycle to obtain an outlier duration; Perform a ratio operation on the obtained outlier duration and the treatment cycle duration to obtain an outlier duration ratio; Obtain the outlier area ratios and outlier duration ratios of multiple treatment cycles, sort the obtained outlier area ratios from small to large, sort the obtained outlier duration ratios from small to large, and obtain an outlier area ratio data set and an outlier duration ratio data set; Determine the reasonable range of the outlier area ratio and the outlier duration ratio by the box plot method; Calculate the lower quartile Q1 and the upper quartile Q3, and calculate the interquartile range IQR = Q3 - Q1; For any data point x, if x < Q1 - 1.5IQR or x > Q3 + 1.5IQR, then mark it as an abnormal data and remove the abnormal data from the outlier area ratio data set and the outlier duration ratio data set; Take the average value of the outlier area ratios obtained after removing the abnormal data, take the average value of the outlier duration ratios obtained after removing the abnormal data, and perform a summation operation on the average value of the outlier area ratios and the average value of the outlier duration ratios to obtain an acid-base outlier value LQ; The obtained acid-base deviation value PC and acid-base outlier value LQ are analyzed and processed, and the formula is used The neutralization capacity value ZH is obtained, wherein c1 and c2 are both preset proportional coefficients, the value of c1 is 0.264, and the value of c2 is 0.836; Based on the analyzed neutralization ability value, analyze and judge the high or low neutralization ability of the water treatment agent.

3. The water treatment agent performance evaluation method based on component analysis according to claim 1 is characterized in that: The specific process for obtaining the relative change value is as follows: Based on the obtained pH value change curve of the sewage and wastewater, the obtained treatment cycle is evenly divided into multiple sub-cycles to obtain the pH value change curve in each sub-cycle; For any sub-period, the pH value corresponding to the start time point of the sub-period and the pH value corresponding to the end time point of the sub-period are processed and the absolute value is taken to obtain the pH value change of the sub-period; The pH value change of the sub-period obtained by the analysis is processed by ratio with the duration corresponding to the sub-period to obtain the pH value change rate of the sub-period; The sub-period pH value change rate obtained by analysis is compared with the preset standard change rate to obtain a relative change value; Mark the relative change value and the corresponding time period in the coordinate system, analyze the abnormal data of the relative change value, remove the abnormal relative change value, and ensure the rationality of the data; Calculate the local outlier factor of the relative change value. For any point p corresponding to a relative change value, find its nearest k neighbors and determine the maximum distance of the neighbors as the kth distance of p. The larger of the distance from point p to point o and the k distance of point o is defined as the kth reachable distance; For any point p corresponding to a relative change value, calculate its average reachable distance relative to its k nearest neighbors, and take the inverse to obtain the local reachable density lrd(p); Get the set of all points within the kth distance of point p, including the points on the kth distance, and get the kth distance neighborhood N k (p); By formula Get the local outlier factor and analyze and judge the rationality of the relative change value; If the local outlier factor is greater than or equal to the preset outlier threshold, it indicates that the relative change value is abnormal, and the abnormal relative change value is removed; If the local outlier factor is less than the preset outlier threshold, it indicates that the relative change value is normal, and the normal relative change value is retained.

4. The method for evaluating water treatment agent performance based on component analysis according to claim 1, characterized in that: The specific process of obtaining the effective adjustment ratio is as follows: The obtained relative change value is analyzed and compared with the preset relative change threshold value to obtain the change signal of the sewage and wastewater; If the obtained relative change value is greater than or equal to the preset relative change threshold, it is marked as a valid change signal; If the obtained relative change value is less than the preset relative change threshold, it is marked as a slowly changing signal; The number of effective change signals obtained within the processing cycle is counted, and the number of effective change signals within the processing cycle is processed by ratio with the number of all change signals within the processing cycle to obtain the effective adjustment ratio YX.

5. The method for evaluating water treatment agent performance based on component analysis according to claim 1, characterized in that: The specific process of obtaining the adjustment stability value is as follows: Obtain the horizontal and vertical coordinate data of the first intersection point of the pH value change curve with the baseline, that is, the pH value of the wastewater and the treatment time point corresponding to the intersection point; perform difference processing on the end time point of the treatment cycle and the treatment time point of the wastewater corresponding to the obtained intersection point to obtain the stable duration; The pH value of the wastewater corresponding to the end of the treatment cycle is processed with the pH value of the wastewater corresponding to the intersection point, and the absolute value is taken to obtain the pH stable change value; The obtained pH stable change value and stable duration are ratio-processed and then multiplied by the treatment period to obtain the stable relative value XD; The obtained effective adjustment ratio YX and the stable relative value XD are summed to obtain the adjustment stability value WD.

6. The method for evaluating water treatment agent performance based on component analysis according to claim 1, characterized in that: The specific process of obtaining the processing performance value is as follows: Based on the neutralization capacity value ZH and the adjustment stability value WD obtained by analysis, the formula The processing performance value XN is obtained, where s1 and s2 are both preset correlation coefficients, the value of s1 is 0.433, and the value of s2 is 0.427; The obtained treatment performance values ​​are sorted from large to small and a table is generated, and the treatment performance of the high and medium water treatment agents is judged by identifying the treatment performance threshold; If the treatment performance value is greater than or equal to the treatment performance threshold, it means that the water treatment agent is a high-performance water treatment agent; If the treatment performance value is less than the treatment performance threshold, it means that the water treatment agent is a low-performance water treatment agent.

7. The method for evaluating water treatment agent performance based on component analysis according to claim 1, characterized in that: The specific process of obtaining the comprehensive performance value is as follows: The treatment performance average value NP and treatment variation coefficient BY are comprehensively analyzed, and the formula The comprehensive performance value ZH is obtained, where t1 and t2 are both preset proportional coefficients, the value of t1 is 0.874, and the value of t2 is 0.163; The obtained comprehensive performance values ​​are sorted from large to small and a table is generated to intuitively display the magnitude of the comprehensive performance of the pH value adjustment of the water treatment agent.

8. The method for evaluating water treatment agent performance based on component analysis according to claim 7, characterized in that: The specific process of obtaining the performance variation coefficient is as follows: Based on the obtained high-performance water treatment agent, obtaining the treatment performance values ​​of the same high-performance water treatment agent in multiple treatment cycles, and performing average processing on the obtained treatment performance values ​​in the multiple treatment cycles to obtain an average treatment performance value; The standard deviation of the processing performance values ​​within multiple processing cycles is analyzed and obtained to obtain the processing performance standard deviation, and the obtained processing performance standard deviation is compared with the processing performance average value to obtain the performance variation coefficient BY.

9. The method for evaluating water treatment agent performance based on component analysis according to claim 7, characterized in that: The specific process of obtaining the average value of the Euclidean distance is as follows: Based on any high-performance water treatment agent, the pH values ​​of wastewater at the beginning and end of multiple treatment cycles are obtained, and the pH values ​​of wastewater at the beginning and end of the same treatment cycle are combined to obtain an acid-base data set; The mean group of all acid-base data groups is obtained by calculation, and the obtained acid-base data group is analyzed with the mean group of all acid-base data groups to calculate the Euclidean distance between the acid-base data group and the mean group of all acid-base data groups; All calculated Euclidean distances were averaged to obtain the average value of the Euclidean distance, OS, and the degree of difference in the data of multiple processing cycles was analyzed.

10. A water treatment agent performance evaluation system based on component analysis, characterized in that: include: Adjustment data collection and collation module: collect and obtain the pH value of wastewater and the corresponding time during the wastewater treatment cycle, and construct a pH value change curve with respect to time according to the pH value of wastewater during the treatment cycle; Neutralization capacity value analysis module: Process and analyze the pH value change curve over time to obtain the neutralization capacity value, identify the water treatment agent through the neutralization capacity value, and obtain a high-medium neutralization water treatment agent; Adjustment stability value analysis module: by processing and analyzing the change rate of the pH value of sewage and wastewater in each sub-period, the relative change value is obtained, the effective adjustment ratio and the relative stability value are obtained by analysis, and the adjustment stability value is calculated; Treatment performance value analysis module: Combine the neutralization capacity values ​​corresponding to the high and medium neutralization water treatment agents, calculate and output the treatment performance values; identify the high and medium neutralization water treatment agents through the treatment performance values, and obtain high-performance water treatment agents; Performance comprehensive value analysis module: obtain the treatment performance values ​​of high-performance water treatment agents in multiple treatment cycles, analyze and obtain the treatment variation coefficient, calculate the average Euclidean distance based on the pH values ​​of sewage and wastewater at the beginning and end of the treatment cycle, and obtain the comprehensive performance value through comprehensive analysis to determine the performance stability of the water treatment agent.

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