Method and system for testing hydraulic impact tolerance of hollow fiber membrane

Abstract

The invention discloses a method and a system for testing hydraulic impact tolerance of a hollow fiber membrane, and relates to the technical field of separation membrane performance testing. The method for testing the hydraulic impact tolerance of the hollow fiber membrane comprises the following steps: acquiring test data of a plurality of tests of the hollow fiber membrane to be evaluated, respectively carrying out data analysis to obtain a test condition comprehensive index, a test performance index and a test damage index of each test, and carrying out comprehensive analysis to obtain a hydraulic impact adaptability index of each test; the hydraulic impact adaptability indexes of each test of the hollow fiber membrane to be evaluated are arranged in a descending order, and a hydraulic impact tolerance table is generated. The hydraulic cleaning condition combination is screened out based on the hydraulic impact tolerance table, so that the tolerance of the hollow fiber membrane under different hydraulic impact conditions can be comprehensively evaluated; therefore, the comprehensiveness and accuracy of the evaluation result are ensured, and the optimal hydraulic impact condition is selected.

Description

Technical Field

[0001] The present invention relates to the technical field of separation membrane performance testing, and specifically to a method and system for testing the hydraulic shock tolerance of hollow fiber membranes. Background Art

[0002] The hollow fiber membrane technology is widely used in the fields of water treatment, wastewater treatment, seawater desalination, etc. Its excellent separation performance makes the hollow fiber membrane a core component of membrane separation technology. However, during the use of hollow fiber membranes, they are affected by multiple factors such as hydraulic shock, pollutant accumulation, and membrane fouling, resulting in a decline in membrane performance and even premature failure. To extend the service life of hollow fiber membranes and ensure their long-term stable separation performance, regular cleaning has become one of the key operations for membrane system maintenance. The cleaning process can remove pollutants on the membrane surface and in the pores, restoring the membrane flux and performance. However, the cleaning effect is closely related to the hydraulic cleaning conditions. Inappropriate cleaning conditions may not only fail to effectively remove contaminants, but may also cause further damage to the membrane structure and even accelerate membrane aging.

[0003] In the prior art, the selection of cleaning conditions mainly relies on the experience of operators and test results. However, it lacks scientificity and systematicness, and it is difficult to accurately evaluate which cleaning conditions can achieve the optimal effect under different hydraulic shock conditions.

[0004] The limitations of the prior art at least include the following problems. The prior art lacks a comprehensive evaluation of the comprehensive performance of the membrane under multiple hydraulic shock conditions. It only targets single conditions such as specific water flow rate, pressure, or time, and fails to consider the combined effects of multiple hydraulic conditions on membrane performance. As a result, it is difficult to reflect the performance of hollow fiber membranes in complex and changing actual application environments, leading to one-sided evaluation results and making it difficult to comprehensively evaluate the adaptability and shock resistance of the membrane under different operating conditions. Summary of the Invention

[0005] Aiming at the deficiencies of the prior art, the present invention provides a method and system for testing the hydraulic shock tolerance of hollow fiber membranes, which solves the problem that the prior art only considers single hydraulic shock conditions and fails to comprehensively evaluate the influence of multiple conditions on the performance of hollow fiber membranes, resulting in one-sided evaluation results.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: A method for testing the hydraulic shock tolerance of a hollow fiber membrane, comprising the following steps: obtaining the test data of several tests of the hollow fiber membrane to be evaluated, the test data including test condition data, test performance data, and test image data; performing data analysis on the test data of each test of the hollow fiber membrane to be evaluated to obtain the test condition comprehensive index, test performance index, and test damage index of each test of the hollow fiber membrane to be evaluated, and performing comprehensive analysis to obtain the hydraulic shock adaptability index of each test of the hollow fiber membrane to be evaluated; arranging the hydraulic shock adaptability indexes of each test of the hollow fiber membrane to be evaluated in descending order to generate a hydraulic shock tolerance table, and screening out the hydraulic cleaning condition combination based on the hydraulic shock tolerance table.

[0007] Further, the test condition data includes hydraulic shock pressure value, shock resistance time value, water flow rate value, water temperature value, and water quality index, and the test performance index includes permeability value, flux value, recovery rate value, membrane resistance value, tensile force value, and toughness value. The test image data is specifically the pixel value and two-dimensional coordinates of each pixel point in the test image.

[0008] Further, the specific steps for obtaining the water quality index of each test of the hollow fiber membrane to be evaluated are as follows: obtaining the suspended solid concentration value, pH value, conductivity value, dissolved oxygen content value, suspended solid concentration reference value, pH reference value, conductivity reference value, and dissolved oxygen content reference value of each test of the hollow fiber membrane to be evaluated, and performing ratio analysis respectively to obtain the suspended solid concentration difference index, pH difference index, conductivity difference index, and dissolved oxygen content difference index of each test of the hollow fiber membrane to be evaluated; and performing comprehensive analysis on the suspended solid concentration difference index, pH difference index, conductivity difference index, and dissolved oxygen content difference index of each test of the hollow fiber membrane to be evaluated to obtain the water quality index of each test of the hollow fiber membrane to be evaluated.

[0009] Further, the specific steps for obtaining the test condition comprehensive index of each test of the hollow fiber membrane to be evaluated are as follows: performing standardization processing on the hydraulic shock pressure value, shock resistance time value, water flow rate value, water temperature value, and water quality index of each test of the hollow fiber membrane to be evaluated; performing comprehensive analysis based on the standardized hydraulic shock pressure value, shock resistance time value, water flow rate value, water temperature value, and water quality index of each test of the hollow fiber membrane to be evaluated to obtain the test condition comprehensive index of each test of the hollow fiber membrane to be evaluated.

[0010] Further, the specific steps to obtain the test performance index for each test of the hollow fiber membrane to be evaluated are as follows: normalize the permeability value, flux value, recovery rate value, membrane resistance value, tensile force value, and toughness value for each test of the hollow fiber membrane to be evaluated; based on the normalized permeability value, flux value, recovery rate value, membrane resistance value, tensile force value, and toughness value for each test of the hollow fiber membrane to be evaluated, conduct a comprehensive analysis to obtain the test performance index for each test of the hollow fiber membrane to be evaluated.

[0011] Further, the specific steps to obtain the test breakage index for each test of the hollow fiber membrane to be evaluated are as follows: perform edge recognition processing on the pixel values of each pixel point in the test image for each test of the hollow fiber membrane to be evaluated to obtain several damage regions for each test of the hollow fiber membrane to be evaluated; read and comprehensively analyze the pixel values of each pixel point in each damage region and the pixel values of each neighborhood pixel point in the set neighborhood for each test of the hollow fiber membrane to be evaluated to obtain the damage texture index for each test of the hollow fiber membrane to be evaluated; and read and comprehensively analyze the two-dimensional coordinates of each edge pixel point in each damage region for each test of the hollow fiber membrane to be evaluated to obtain the damage area index for each test of the hollow fiber membrane to be evaluated, and conduct a comprehensive analysis in combination with the damage texture index to obtain the test breakage index for each test of the hollow fiber membrane to be evaluated.

[0012] Further, the specific steps to obtain the toughness value for each test of the hollow fiber membrane to be evaluated are as follows: after each test of the hollow fiber membrane to be evaluated, conduct a tensile test on the hollow fiber membrane based on a tensile testing machine and record the force-displacement curve during the tensile process; and calculate the curve area under the force-displacement curve from the initial displacement value to the maximum displacement value based on integral operation, and mark it as the toughness value for each test of the hollow fiber membrane to be evaluated.

[0013] A test system for the resistance of a hollow fiber membrane to hydraulic shock includes: a data acquisition module for acquiring test data for several tests of the hollow fiber membrane to be evaluated, where the test data includes test condition data, test performance data, and test image data; a data analysis module for respectively conducting data analysis on the test data for each test of the hollow fiber membrane to be evaluated to obtain the comprehensive test condition index, test performance index, and test breakage index for each test of the hollow fiber membrane to be evaluated, and conduct a comprehensive analysis to obtain the hydraulic shock adaptability index for each test of the hollow fiber membrane to be evaluated; a test screening module for arranging the hydraulic shock adaptability indexes for each test of the hollow fiber membrane to be evaluated in descending order to generate a table of resistance to hydraulic shock, and screening out the cleaning hydraulic condition combination based on the table of resistance to hydraulic shock.

[0014] The present invention has the following beneficial effects:

[0015] (1) The method for testing the resistance of hollow fiber membranes to hydraulic shock obtains multiple test data and comprehensively analyzes each set of test data to obtain a hydraulic shock adaptability index. This enables a comprehensive assessment of the tolerance of hollow fiber membranes under different hydraulic shock conditions, ensuring the comprehensiveness and accuracy of the assessment results. Based on this, the optimal hydraulic shock conditions can be selected, providing a scientific basis for the long-term use of the membranes and avoiding damage or degradation of membrane performance caused by excessive or insufficient hydraulic cleaning, thereby increasing the service life and cleaning efficiency of the membranes.

[0016] (2) The method for testing the resistance of hollow fiber membranes to hydraulic shock arranges the test data in descending order according to the hydraulic shock adaptability index of each test and selects the conditions with the strongest adaptability as the best combination for hydraulic cleaning. This ensures that the cleaning conditions are more precise and efficient, improving the cleaning effect of the hollow fiber membranes, removing more dirt and pollutants, avoiding membrane damage caused by over-cleaning, extending the service life of the membranes, enhancing the overall performance and stability of the hollow fiber membranes, reducing repeated cleaning, and lowering the operating costs.

[0017] (3) The testing system for the resistance of hollow fiber membranes to hydraulic shock can accurately obtain and analyze multiple test data through the collaborative work of a data acquisition module, a data analysis module, and a test screening module, and comprehensively evaluate the hydraulic shock resistance of hollow fiber membranes, providing more accurate and comprehensive assessment results. This improves the reliability of the assessment results, ensures that the selected optimal hydraulic cleaning conditions better meet the actual application requirements, further enhances the adaptability of hollow fiber membranes under complex operating conditions, and then enhances the performance and use safety of the membranes.

[0018] Of course, it is not necessary for any product implementing the present invention to achieve all the above-mentioned advantages simultaneously. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a flowchart of a method for testing the resistance of a hollow fiber membrane to hydraulic shock according to the present invention.

[0020] Figure 2 It is a block diagram of a testing system for the resistance of a hollow fiber membrane to hydraulic shock according to the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0021] Please refer to Figure 1, an embodiment of the present invention provides a technical solution: a method for testing the hydraulic shock tolerance of a hollow fiber membrane, comprising the following steps: obtaining test data of several tests of the hollow fiber membrane to be evaluated, the test data including test condition data, test performance data, and test image data; respectively performing data analysis on the test data of each test of the hollow fiber membrane to be evaluated to obtain the test condition comprehensive index, test performance index, and test damage index of each test of the hollow fiber membrane to be evaluated, and performing comprehensive analysis to obtain the hydraulic shock adaptability index of each test of the hollow fiber membrane to be evaluated; arranging the hydraulic shock adaptability indexes of each test of the hollow fiber membrane to be evaluated in descending order to generate a hydraulic shock tolerance table, and screening out the hydraulic cleaning condition combination based on the hydraulic shock tolerance table (that is, selecting the test condition data in the first sequence of the hydraulic shock tolerance table as the optimal hydraulic cleaning condition combination).

[0022] The test condition data includes the hydraulic shock pressure value, impact resistance time value, water flow rate value, water temperature value, and water quality index. The test performance index includes the permeability value, flux value, recovery rate value, membrane resistance value, tensile force value (maximum tensile force), and toughness value. The test image data is specifically the pixel value and two-dimensional coordinates of each pixel point in the test image.

[0023] Among them, the permeability value is the ratio of the amount of water passing through the membrane per unit pressure per unit time to the area of the membrane (which can be obtained from the technical specification manual of the membrane stored in the database).

[0024] The flux value is the amount of water passing through the membrane per unit area per unit time (which can be obtained through a flow meter).

[0025] The recovery rate value is the ratio of the membrane permeate water production amount (that is, the amount of water recovered through membrane permeation, which can be obtained through a permeate water flow meter) to the total input water amount (which can be obtained through an influent water flow meter) during the membrane filtration process.

[0026] The membrane resistance value is the resistance of the membrane to fluid flow, reflecting the degree of membrane fouling or blockage, and can be obtained by measuring the water flow rate of the membrane under different conditions and comparing it with the ideal flow rate.

[0027] The tensile force value is the maximum force that the membrane material can withstand in a tensile experiment. The tensile experiment is carried out by a tensile testing machine. During the test process, the membrane material will be stretched until it breaks, and the maximum tensile force is recorded, that is, the membrane material is stretched along one direction by the tensile testing machine, and the stress and deformation of the material during the stretching process are recorded until cracks appear in the material.

[0028] The toughness value is the energy that the membrane material can absorb when subjected to external forces.

[0029] The specific steps to obtain the toughness value of each test of the hollow fiber membrane to be evaluated are as follows: After each test of the hollow fiber membrane to be evaluated, a tensile test is performed on the hollow fiber membrane based on a tensile testing machine, and the force-displacement curve during the tensile process is recorded; and based on integral operation, the curve area under the force-displacement curve from the initial displacement value to the maximum displacement value is calculated and marked as the toughness value of each test of the hollow fiber membrane to be evaluated.

[0030] Specifically, the specific steps to obtain the water quality index of each test of the hollow fiber membrane to be evaluated are as follows: Obtain the suspended solid concentration value, pH value, conductivity value, dissolved oxygen content value, suspended solid concentration reference value, pH reference value, conductivity reference value, and dissolved oxygen content reference value of each test of the hollow fiber membrane to be evaluated, and perform ratio analysis respectively to obtain the suspended solid concentration difference index, pH difference index, conductivity difference index, and dissolved oxygen content difference index of each test of the hollow fiber membrane to be evaluated; and perform comprehensive analysis on the suspended solid concentration difference index, pH difference index, conductivity difference index, and dissolved oxygen content difference index of each test of the hollow fiber membrane to be evaluated to obtain the water quality index of each test of the hollow fiber membrane to be evaluated.

[0031] In this implementation plan, by obtaining and analyzing water quality parameters such as suspended solid concentration, pH value, conductivity value, and dissolved oxygen content, the potential impact of water quality changes on the performance of the hollow fiber membrane can be comprehensively evaluated, thereby providing a scientific basis for the use and maintenance of the membrane. And by calculating the suspended solid concentration difference index, pH difference index, conductivity difference index, and dissolved oxygen content difference index, the difference between the water quality parameters and the membrane performance can be quantified, thereby helping to evaluate the adaptability and stability of the membrane under different water quality conditions, and further revealing the behavior of the membrane under different water quality conditions, improving the reliability of the membrane in various complex water quality environments. Finally, through the formed water quality index, the comprehensive performance of the membrane under different water quality conditions can be reflected, so that operations such as membrane maintenance, cleaning, and replacement can be based on real data support and ensure the long-term efficient operation of the membrane system.

[0032] Specifically, the specific steps to obtain the comprehensive test condition index of each test of the hollow fiber membrane to be evaluated are as follows: Standardize the hydraulic shock pressure value, shock resistance time value, water flow rate value, water temperature value, and water quality index of each test of the hollow fiber membrane to be evaluated; Based on the standardized hydraulic shock pressure value, shock resistance time value, water flow rate value, water temperature value, and water quality index of each test of the hollow fiber membrane to be evaluated, perform comprehensive analysis to obtain the comprehensive test condition index of each test of the hollow fiber membrane to be evaluated.

[0033] In this implementation, by standardizing the hydraulic impact pressure value, impact resistance time value, water flow velocity value, water temperature value, and water quality index, the dimensional differences between different test conditions can be eliminated, enabling comparability of various data. This ensures that each parameter can be fairly integrated during the analysis process, providing a unified standard for comprehensive evaluation. Subsequently, it helps improve the accuracy and consistency of data analysis. Moreover, the standardized data allows the impacts of different test conditions to be comprehensively analyzed with the same weight. By comprehensively analyzing each standardized data, the comprehensive impact of each test condition can be more accurately reflected, avoiding the over-dominance of a single condition on the final evaluation result, thus ensuring the fairness and comprehensiveness of the comprehensive index of test conditions.

[0034] Specifically, the specific steps to obtain the test performance index for each test of the hollow fiber membrane to be evaluated are as follows: Normalize the permeability value, flux value, recovery rate value, membrane resistance value, tensile force value, and toughness value for each test of the hollow fiber membrane to be evaluated; Based on the normalized permeability value, flux value, recovery rate value, membrane resistance value, tensile force value, and toughness value for each test of the hollow fiber membrane to be evaluated, conduct a comprehensive analysis to obtain the test performance index for each test of the hollow fiber membrane to be evaluated.

[0035] In this implementation, by normalizing different performance parameters such as permeability, flux, recovery rate, membrane resistance, tensile force, and toughness, it is ensured that each index can be compared and analyzed on the same scale. This enables each performance index to fairly participate in the comprehensive analysis, avoiding the excessive influence of a specific index on the result, thereby improving the accuracy and rationality of data processing. Subsequently, it can truly reflect the comprehensive performance of the hollow fiber membrane under different test conditions, ensuring the fairness of the test performance index. After normalizing multiple performance indicators, the impacts of various performances on the membrane quality can be comprehensively considered for a comprehensive performance evaluation, clearly reflecting the overall performance of the membrane under different test conditions.

[0036] Specifically, the specific steps to obtain the test breakage index for each test of the hollow fiber membrane to be evaluated are as follows: perform edge recognition processing (i.e., Canny edge detection) on the pixel values of each pixel point in the test image of each test of the hollow fiber membrane to be evaluated to obtain several damaged areas for each test of the hollow fiber membrane to be evaluated; read and comprehensively analyze the pixel values of each pixel point in each damaged area and the pixel values of each neighborhood pixel point in the set neighborhood (i.e., local binary method) for each test of the hollow fiber membrane to be evaluated to obtain the damage texture index for each test of the hollow fiber membrane to be evaluated; and read and comprehensively analyze the two-dimensional coordinates of each edge pixel point in each damaged area for each test of the hollow fiber membrane to be evaluated to obtain the damage area index for each test of the hollow fiber membrane to be evaluated, and comprehensively analyze in combination with the damage texture index to obtain the test breakage index for each test of the hollow fiber membrane to be evaluated.

[0037] In this embodiment, by using Canny edge detection to perform edge recognition processing on each pixel point of the test image, the damaged areas in the hollow fiber membrane can be accurately identified, and then the tiny cracks and breakages on the membrane surface can be detected, so as to ensure that the damaged areas in the test process are not missed. Secondly, by analyzing the pixel values and neighborhood pixel points in each damaged area through the local binary method, the texture characteristics of the damage can be effectively identified, its complexity can be evaluated, and the accuracy of damage analysis can be effectively improved. Finally, by comprehensively analyzing the two-dimensional coordinates of the damaged areas, the area of the damaged areas can be further quantified, thereby assisting the analysis of other damage characteristics, and then providing a comprehensive evaluation of membrane breakage. And by comprehensively analyzing in combination with the damage texture and damage area, the damage evaluation is made more comprehensive and accurate.

[0038] Please refer to Figure 2 As shown in, an embodiment of the present invention provides a technical solution: a hollow fiber membrane hydraulic shock resistance test system, including: a data acquisition module for acquiring test data of several tests of the hollow fiber membrane to be evaluated, where the test data includes test condition data, test performance data, and test image data; a data analysis module for performing data analysis on the test data of each test of the hollow fiber membrane to be evaluated respectively to obtain the test condition comprehensive index, test performance index, and test breakage index for each test of the hollow fiber membrane to be evaluated, and performing comprehensive analysis to obtain the hydraulic shock adaptability index for each test of the hollow fiber membrane to be evaluated; a test screening module for sorting the hydraulic shock adaptability indexes of each test of the hollow fiber membrane to be evaluated in descending order to generate a hydraulic shock resistance table, and screening out the cleaning hydraulic condition combination based on the hydraulic shock resistance table.

[0039] Although the preferred embodiments of the present invention have been described, additional changes and modifications can be made to these embodiments by those skilled in the art once they learn the basic creative concept. Therefore, the appended claims are intended to be construed to include the preferred embodiments as well as all changes and modifications falling within the scope of the present invention.

[0040] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalent technologies, the present invention is also intended to include these modifications and variations.

Claims

1. A method for testing the hydraulic impact resistance of a hollow fiber membrane, characterized in that: The following steps are involved: Acquire test data of several tests of the hollow fiber membrane to be evaluated, wherein the test data includes test condition data, test performance data, and test image data; Performing data analysis on the test data of each test of the hollow fiber membrane to be evaluated, respectively, to obtain the test condition comprehensive index, test performance index, and test damage index of each test of the hollow fiber membrane to be evaluated, and performing comprehensive analysis to obtain the hydraulic impact adaptability index of each test of the hollow fiber membrane to be evaluated; The hydraulic shock adaptability index of each test of the hollow fiber membrane to be evaluated is arranged in descending order to generate a hydraulic shock tolerance table, and a hydraulic cleaning condition combination is screened out based on the hydraulic shock tolerance table.

2. The method for testing the hollow fiber membrane's resistance to hydraulic shock according to claim 1, characterized in that: The test condition data include hydraulic shock pressure value, shock resistance time value, water flow rate value, water temperature value, and water quality index; the test performance index includes permeability value, flux value, recovery rate value, membrane resistance value, tensile force value, and toughness value; the test image data specifically includes the pixel value and two-dimensional coordinates of each pixel point in the test image.

3. The method for testing the hollow fiber membrane's resistance to hydraulic shock according to claim 2, characterized in that: The specific steps to obtain the water quality index for each test of the hollow fiber membrane to be evaluated are as follows: Obtain the suspended matter concentration value, pH value, conductivity value, dissolved oxygen content value, suspended matter concentration reference value, pH reference value, conductivity reference value, and dissolved oxygen content reference value of each test of the hollow fiber membrane to be evaluated, and perform proportion analysis respectively to obtain the suspended matter concentration difference index, pH difference index, conductivity difference index, and dissolved oxygen content difference index of each test of the hollow fiber membrane to be evaluated; A comprehensive analysis is performed on the suspended matter concentration difference index, pH difference index, conductivity difference index, and dissolved oxygen content difference index of each test of the hollow fiber membrane to be evaluated to obtain the water quality index of each test of the hollow fiber membrane to be evaluated.

4. The method for testing the hollow fiber membrane's resistance to hydraulic shock according to claim 2, characterized in that: The specific steps for obtaining the comprehensive index of the test conditions for each test of the hollow fiber membrane to be evaluated are as follows: Standardize the hydraulic shock pressure value, shock resistance time value, water flow rate value, water temperature value, and water quality index of each test of the hollow fiber membrane to be evaluated; Based on the hydraulic impact pressure value, impact resistance time value, water flow rate value, water temperature value and water quality index of each test of the hollow fiber membrane to be evaluated after standardized processing, a comprehensive analysis is performed to obtain a comprehensive index of test conditions for each test of the hollow fiber membrane to be evaluated.

5. The method for testing the hydraulic impact resistance of hollow fiber membranes according to claim 2, characterized in that: The specific steps for obtaining the test performance index for each test of the hollow fiber membrane to be evaluated are as follows: The permeability value, flux value, recovery value, membrane resistance value, tensile force value, and toughness value of each test of the hollow fiber membrane to be evaluated are normalized; Based on the normalized permeability value, flux value, recovery rate value, membrane resistance value, tensile force value, and toughness value of each test of the hollow fiber membrane to be evaluated, a comprehensive analysis is performed to obtain the test performance index of each test of the hollow fiber membrane to be evaluated.

6. The method for testing the hydraulic impact resistance of hollow fiber membranes according to claim 2, characterized in that: The specific steps for obtaining the test damage index for each test of the hollow fiber membrane to be evaluated are as follows: Performing edge recognition processing on the pixel value of each pixel point in the test image of each test of the hollow fiber membrane to be evaluated, and obtaining a plurality of damaged areas of each test of the hollow fiber membrane to be evaluated; Read the pixel value of each pixel point in each damaged area of ​​each test of the hollow fiber membrane to be evaluated and the pixel value of each neighborhood pixel point of the set neighborhood for comprehensive analysis to obtain the damage texture index of each test of the hollow fiber membrane to be evaluated; The two-dimensional coordinates of each edge pixel point of each damaged area of ​​each test of the hollow fiber membrane to be evaluated are read for comprehensive analysis to obtain the damage area index of each test of the hollow fiber membrane to be evaluated, and combined with the damage texture index for comprehensive analysis to obtain the test damage index of each test of the hollow fiber membrane to be evaluated.

7. The method for testing the hydraulic impact resistance of hollow fiber membranes according to claim 2, characterized in that: The specific steps to obtain the toughness value of each test of the hollow fiber membrane to be evaluated are as follows: After each test of the hollow fiber membrane to be evaluated, a tensile test is performed on the hollow fiber membrane based on a tensile testing machine, and a force-displacement curve during the stretching process is recorded; The curve area from the initial displacement value to the maximum displacement value under the force-displacement curve is calculated based on the integral operation and marked as the toughness value of each test of the hollow fiber membrane to be evaluated.

8. A hollow fiber membrane hydraulic impact resistance test system, using the hollow fiber membrane hydraulic impact resistance test method according to any one of claims 1 to 7, characterized in that: include: A data acquisition module, used to acquire test data of several tests of the hollow fiber membrane to be evaluated, wherein the test data includes test condition data, test performance data, and test image data; A data analysis module is used to analyze the test data of each test of the hollow fiber membrane to be evaluated, obtain the test condition comprehensive index, test performance index, and test damage index of each test of the hollow fiber membrane to be evaluated, and perform comprehensive analysis to obtain the hydraulic impact adaptability index of each test of the hollow fiber membrane to be evaluated; The test screening module is used to arrange the hydraulic shock adaptability index of each test of the hollow fiber membrane to be evaluated in descending order, generate a hydraulic shock tolerance table, and screen out a cleaning hydraulic condition combination based on the hydraulic shock tolerance table.

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