A ceramic ultrafiltration membrane deep treatment system for tap water

Abstract

This invention relates to the field of water purification technology, and more particularly to a deep treatment system for tap water using a ceramic ultrafiltration membrane. The system includes a water purification treatment center, a treatment demand unit, a physical treatment unit, a chemical anti-clogging unit, a flux traceability unit, and a testing and management unit. This invention analyzes the cleaning of the ceramic ultrafiltration membrane through regional division, determining whether cleaning is necessary based on permeability and pressure difference to ensure the filtration performance and flux of the ceramic ultrafiltration membrane. Furthermore, it analyzes both physical and chemical cleaning through information feedback, helping to reduce defects in these processes and improve their reliability. Simultaneously, it evaluates the quality of physical or chemical cleaning from the perspective of continuous use, allowing for rational adjustments to the regeneration and cleaning of the ceramic ultrafiltration membrane, reducing the impact of insufficient regeneration and cleaning on subsequent use.

Description

Technical Field

[0001] This invention relates to the field of water purification technology, and in particular to a deep treatment system for tap water using a ceramic ultrafiltration membrane. Background Technology

[0002] Currently, there are two main processes commonly used in domestic waterworks. One is to use sedimentation tanks + sand filters for filtration. This process is mature and has relatively low operating costs. However, due to the low filtration precision, there is a risk that microorganisms such as viruses and large organic molecules may enter the clear water tank and water supply network. The other process is to use sedimentation tanks + polymer ultrafiltration membranes, which produce better turbidity and other indicators than sand filters.

[0003] However, in the existing technology, it is impossible to safely supervise the regeneration and cleaning of ceramic ultrafiltration membranes for tap water, which makes it impossible to restore the filtration performance and flux of ceramic ultrafiltration membranes in a timely manner, reducing the effectiveness of ceramic ultrafiltration membranes. Furthermore, it is impossible to manage the defects in physical and chemical treatments, which leads to the deficiencies in physical and chemical treatments reducing the subsequent effectiveness of ceramic ultrafiltration membranes.

[0004] To address the aforementioned technical shortcomings, a solution is proposed. Summary of the Invention

[0005] The purpose of this invention is to provide a ceramic ultrafiltration membrane deep treatment system for tap water to address the aforementioned technical deficiencies. This invention analyzes the cleaning of the ceramic ultrafiltration membrane through regional division, determining whether cleaning is necessary based on permeability and pressure difference to ensure the filtration performance and flux of the membrane. Furthermore, it analyzes both physical and chemical cleaning through information feedback, helping to reduce defects in these processes and improve their reliability. Simultaneously, it uses a progressive information approach to continuously evaluate the treatment performance of the membrane flux characteristic curve, assessing the adequacy of physical or chemical cleaning from a continuous usage perspective. This allows for rational adjustments to the regeneration and cleaning of the ceramic ultrafiltration membrane, improving its effectiveness and minimizing the impact of insufficient regeneration and cleaning on subsequent use.

[0006] The objective of this invention can be achieved through the following technical solution: a tap water ceramic ultrafiltration membrane deep treatment system, comprising a water purification treatment center, a treatment demand unit, a physical treatment unit, a chemical anti-clogging unit, a flux traceability unit, and an evaluation and management unit;

[0007] The water purification treatment center is used to retrieve the fluid volume and pressure value of the ceramic ultrafiltration membrane, and send the fluid volume and pressure value to the treatment demand unit for parameter analysis and definition and cleaning discrimination analysis. The obtained permeability evaluation value and pressure difference evaluation value are compared and analyzed to obtain normal signal or cleaning signal.

[0008] When a cleaning signal is generated, the physical processing unit is used to perform physical cleaning evaluation and feedback analysis on the backwash information collected from the backwashing equipment and the aeration information collected from the aeration equipment to obtain a stable backwash signal or a backwash risk signal. The chemical anti-clogging unit is used to perform defect risk quantitative evaluation and analysis on the collected chemical processing information to obtain a chemical qualified signal or a chemical deviation signal.

[0009] The flux traceability unit is used to collect the membrane flux characteristic curve of the ceramic ultrafiltration membrane, and to conduct continuous traceability evaluation and analysis of the membrane flux characteristic curve to obtain the continuous water purification time. The obtained continuous water purification time is compared and analyzed with the preset continuous water purification time threshold to obtain the cleaning abnormal signal or cleaning normal signal.

[0010] Preferably, the parameter analysis definition and cleanup discriminant analysis process is as follows:

[0011] Set the monitoring period and set it as the time threshold. Obtain the amount of fluid passing through each unit membrane area per unit time within the time threshold of the ceramic ultrafiltration membrane. Compare and analyze the fluid amount with the preset fluid amount threshold. Set the unit membrane area corresponding to the fluid amount less than the preset fluid amount threshold as the non-permeable area and the unit membrane area corresponding to the fluid amount greater than or equal to the preset fluid amount threshold as the permeable area. Obtain the ratio between the total area corresponding to the non-permeable area and the total area corresponding to the permeable area and set it as the permeability evaluation value.

[0012] The pressure values ​​on both sides of each unit membrane area of ​​the ceramic ultrafiltration membrane are obtained. Based on the pressure values ​​on both sides of the ceramic ultrafiltration membrane, the pressure difference on both sides of each unit membrane area is obtained and set as the unit pressure difference. The area corresponding to the unit pressure difference being greater than or equal to the preset unit pressure difference threshold is set as the unit risk area. The ratio of the total area corresponding to the unit risk area to the total area of ​​the ceramic ultrafiltration membrane is set as the pressure difference evaluation value.

[0013] The permeability and differential pressure assessment values ​​are compared and analyzed with the preset permeability and differential pressure assessment thresholds to obtain normal or clean signals.

[0014] Preferably, the physical cleaning evaluation feedback analysis process is as follows:

[0015] The backwashing information of the backwashing equipment and the aeration information of the aeration equipment are obtained within the time threshold. The backwashing information includes the backwashing duration and backwashing risk value, and the aeration information includes the aeration flow rate and operating speed.

[0016] Among them, the backwash risk value represents the total time or overlapping time during which the corresponding values ​​of the operating condition information and characteristic information of the backwashing equipment exceed the preset threshold. The overlapping time means the time during which the corresponding values ​​of parameters in more than two operating condition information or characteristic information exceed the preset threshold. The operating condition information includes operating power and operating voltage, and the characteristic information includes vibration amplitude and operating temperature.

[0017] Preferably, the percentage of values ​​where the difference between the values ​​of aeration information at random moments during the operation of the aeration equipment is less than a preset threshold is set as the aeration deviation value.

[0018] The backwash risk value and aeration deviation value are compared and analyzed with the preset backwash risk value threshold and preset aeration deviation value threshold that are entered and stored internally to obtain a stable backwash signal or a backwash risk signal.

[0019] Preferably, the defect risk quantification and analysis process is as follows:

[0020] Chemical treatment information of ceramic ultrafiltration membrane within a time threshold is obtained. The chemical treatment information includes cycle evaluation value and residual risk value. The cycle evaluation value and residual risk value are processed to obtain chemical qualification signal or chemical deviation signal.

[0021] Preferably, the number of cycles and the total duration of the ceramic ultrafiltration membrane cycle cleaning process within the time threshold are obtained, and the number of cycles and the total duration of the cycle cleaning that are lower than the preset number of cycles and the preset total duration of the cycle cleaning are set as the cycle evaluation value.

[0022] The washing water flow rate and washing area during the washing period of the ceramic ultrafiltration membrane are obtained. The sum of the time corresponding to the washing water flow rate deviating from the preset washing water flow rate range and the washing area below the preset washing area threshold is normalized and set as the residual hidden danger value.

[0023] Preferably, the process for continuous traceability evaluation and analysis of processing performance is as follows:

[0024] Obtain the membrane flux characteristic curve of the ceramic ultrafiltration membrane within the time threshold, obtain the point corresponding to the membrane flux equal to the preset membrane flux threshold from the membrane flux characteristic curve, and set it as the flux critical point. Obtain the time between the end of the most recent cleaning of the ceramic ultrafiltration membrane and the time corresponding to the flux critical point, and set it as the continuous water purification time.

[0025] Preferably, the total number of cleaning times of the ceramic ultrafiltration membrane is obtained and set as the cleaning base. The cleaning base is then processed to obtain the preset cleaning base range corresponding to the cleaning base. A preset continuous water purification time threshold for the cleaning base located in the corresponding preset cleaning base range is then obtained. The continuous water purification time is compared and analyzed with the preset continuous water purification time threshold to obtain a cleaning abnormal signal or a cleaning normal signal.

[0026] The beneficial effects of this invention are as follows:

[0027] (1) This invention analyzes the cleaning of ceramic ultrafiltration membranes by dividing the area, that is, judging whether the ceramic ultrafiltration membrane needs to be cleaned from two points: permeability and pressure difference, so as to ensure the filtration performance and flux of the ceramic ultrafiltration membrane. The analysis is carried out from two points: physical cleaning and chemical cleaning by information feedback. On the one hand, it helps to reduce the defects in physical cleaning and chemical cleaning, so as to improve the reliability of physical cleaning and chemical cleaning. On the other hand, it helps to monitor the cleaning process in physical cleaning and chemical cleaning, so as to regulate the defects in the cleaning of ceramic ultrafiltration membranes, thereby reducing the impact of deviations in the cleaning process on the effect of physical cleaning and chemical cleaning.

[0028] (2) This invention uses a progressive information approach to conduct a continuous performance traceability evaluation and analysis of the membrane flux characteristic curve of the ceramic ultrafiltration membrane. That is, it evaluates whether the physical cleaning or chemical cleaning is qualified from the perspective of continuous use, so as to make reasonable adjustments to the regeneration and cleaning of the ceramic ultrafiltration membrane, thereby improving the effect of regeneration and cleaning, and reducing the impact of insufficient regeneration and cleaning of the ceramic ultrafiltration membrane on subsequent use. Attached Figure Description

[0029] The invention will now be further described with reference to the accompanying drawings;

[0030] Figure 1 This is a flowchart of the system of the present invention;

[0031] Figure 2 This is a partial analysis diagram of Embodiment 2 of the present invention. Detailed Implementation

[0032] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Example 1

[0033] Please see Figures 1 to 2As shown, the present invention is a deep treatment system for tap water using a ceramic ultrafiltration membrane, comprising a water purification treatment center, a treatment demand unit, a physical treatment unit, a chemical anti-clogging unit, a flux traceability unit, and a testing and management unit. The water purification treatment center and the treatment demand unit have a one-way communication connection. The treatment demand unit has a one-way communication connection with the physical treatment unit, the chemical anti-clogging unit, and the testing and management unit. The physical treatment unit and the chemical anti-clogging unit have a one-way communication connection with the flux traceability unit and the testing and management unit. The flux traceability unit has a one-way communication connection with the testing and management unit.

[0034] The water purification treatment center is used to retrieve the fluid volume and pressure value of the ceramic ultrafiltration membrane and send the fluid volume and pressure value to the treatment demand unit;

[0035] The processing unit performs parameter analysis and cleaning discrimination analysis on the received fluid volume and pressure values ​​to determine whether the ceramic ultrafiltration membrane needs cleaning, thus ensuring the filtration effect of the ceramic ultrafiltration membrane. The specific parameter analysis and cleaning discrimination analysis process is as follows:

[0036] Set the monitoring period and set it as the time threshold. Obtain the amount of fluid passing through each unit membrane area per unit time within the time threshold of the ceramic ultrafiltration membrane. Compare and analyze the fluid amount with the preset fluid amount threshold. Set the unit membrane area corresponding to the fluid amount less than the preset fluid amount threshold as the non-permeable area and the unit membrane area corresponding to the fluid amount greater than or equal to the preset fluid amount threshold as the permeable area. Obtain the ratio between the total area corresponding to the non-permeable area and the total area corresponding to the permeable area and set it as the permeability evaluation value.

[0037] The pressure values ​​on both sides of each unit membrane area of ​​the ceramic ultrafiltration membrane are obtained. Based on the pressure values ​​on both sides of the ceramic ultrafiltration membrane, the pressure difference on both sides of each unit membrane area is obtained and set as the unit pressure difference. The area corresponding to the unit pressure difference being greater than or equal to the preset unit pressure difference threshold is set as the unit risk area. The ratio of the total area corresponding to the unit risk area to the total area of ​​the ceramic ultrafiltration membrane is set as the pressure difference evaluation value.

[0038] The permeability and differential pressure test values ​​were compared and analyzed with preset permeability and differential pressure test thresholds.

[0039] If the permeability test value is less than the preset permeability test value threshold and the differential pressure test value is less than the preset differential pressure test value threshold, then a normal signal is generated.

[0040] If the permeability test value is greater than or equal to the preset permeability test value threshold, or the differential pressure test value is greater than or equal to the preset differential pressure test value threshold, a cleaning signal is generated and a normal signal or cleaning signal is sent to the test management unit. Upon receiving the normal signal or cleaning signal, the test management unit immediately performs the preset early warning operation corresponding to the normal signal or cleaning signal, so as to carry out targeted cleaning treatment on the ceramic ultrafiltration membrane to restore the original filtration performance and flux of the ceramic ultrafiltration membrane, thereby improving the water treatment effect. Example 2

[0041] When a cleaning signal is generated, the physical processing unit responds to the signal and collects backwash information from the backwashing equipment and aeration information from the aeration equipment. Simultaneously, it performs physical cleaning evaluation and feedback analysis to understand the stability and reliability of the physical treatment method for the ceramic ultrafiltration membrane, ensuring its effectiveness. This also helps in the targeted management of defects during the physical treatment process, thereby improving the overall physical treatment effect of the ceramic ultrafiltration membrane. The specific physical cleaning evaluation and feedback analysis process is as follows:

[0042] The backwashing information of the backwashing equipment and the aeration information of the aeration equipment are obtained within the time threshold. The backwashing information includes the backwashing duration and backwashing risk value, and the aeration information includes the aeration flow rate and operating speed.

[0043] Among them, the backwash risk value represents the total time or overlapping time during which the corresponding values ​​of the operating condition information and characteristic information of the backwashing equipment exceed the preset threshold. The overlapping time means that there are more than two operating condition information or characteristic information parameters whose corresponding values ​​exceed the preset threshold at the same time. The operating condition information includes operating power, operating voltage, etc., and the characteristic information includes vibration amplitude, operating temperature, etc. It should be noted that the backwash risk value is a potential impact parameter that reflects the abnormal risk of ceramic ultrafiltration membrane cleaning.

[0044] The percentage of values ​​where the difference between the values ​​of aeration information at random times during the operation of the aeration equipment is less than a preset threshold is set as the aeration deviation value.

[0045] The backwash risk value and aeration deviation value are compared and analyzed with the preset backwash risk value threshold and preset aeration deviation value threshold that are entered and stored internally:

[0046] If the backwash risk value is less than the preset backwash risk value threshold and the aeration deviation value is less than the preset aeration deviation value threshold, a stable backwash signal is generated.

[0047] If the backwash risk value is greater than or equal to the preset backwash risk value threshold, or the aeration deviation value is greater than or equal to the preset aeration deviation value threshold, a backwash risk signal is generated. The stable backwash signal or the backwash risk signal is sent to the evaluation management unit. After receiving the stable backwash signal or the backwash risk signal, the evaluation management unit immediately performs the preset early warning operation corresponding to the stable backwash signal or the backwash risk signal to ensure the physical treatment effect of the ceramic ultrafiltration membrane. At the same time, it helps to manage the defects in the physical treatment process in a targeted manner to improve the physical treatment effect of the ceramic ultrafiltration membrane.

[0048] When a cleaning signal is generated, the chemical anti-clogging unit responds to the signal and collects chemical processing information of the ceramic ultrafiltration membrane. Simultaneously, it performs a defect risk quantification and analysis on this information to analyze whether there are any deviations in the processing of the ceramic ultrafiltration membrane from a chemical processing perspective, thereby ensuring the stability and reliability of the entire ceramic ultrafiltration membrane processing. The specific defect risk quantification and analysis process is as follows:

[0049] The number of cycles and the total duration of the ceramic ultrafiltration membrane cleaning process within the time threshold are obtained. The number of cycles and the total duration of the cleaning process that are lower than the preset number of cycles and the preset total duration of the cleaning process are set as the cycle evaluation value. It should be noted that the cycle evaluation value is a parameter that reflects the influence of the ceramic ultrafiltration membrane on the cyclic contact treatment with chemical agents.

[0050] The washing water flow rate and washing area during the washing period of the ceramic ultrafiltration membrane are obtained. The sum of the time when the washing water flow rate deviates from the preset washing water flow rate range and the portion when the washing area is lower than the preset washing area threshold is normalized and set as the residual risk value. It should be noted that the residual risk value is a parameter that reflects the potential impact risk of chemical residues on the ceramic ultrafiltration membrane.

[0051] Chemical treatment information of the ceramic ultrafiltration membrane within the time threshold is obtained. This information includes cycle evaluation values ​​and residual risk values. The cycle evaluation values ​​and residual risk values ​​are then processed for discrimination.

[0052] If the cyclic evaluation value is less than the preset cyclic evaluation value threshold and the residual hidden danger value is less than the preset residual hidden danger value threshold, then a chemical qualified signal is generated.

[0053] If the cyclic evaluation value is greater than or equal to the preset cyclic evaluation value threshold, or the residual hidden danger value is greater than or equal to the preset residual hidden danger value threshold, a chemical deviation signal is generated. The chemical pass signal or chemical deviation signal is sent to the evaluation management unit. After receiving the chemical pass signal or chemical deviation signal, the evaluation management unit immediately performs the preset early warning operation corresponding to the chemical pass signal or chemical deviation signal, so as to analyze whether there is a deviation in the treatment of ceramic ultrafiltration membrane from the perspective of chemical treatment, so as to ensure the stability and reliability of the entire ceramic ultrafiltration membrane treatment. Example 3

[0054] The flux traceability unit is used to collect the membrane flux characteristic curve of the ceramic ultrafiltration membrane and perform continuous performance traceability evaluation and analysis on the membrane flux characteristic curve to determine whether the permeability of the cleaned ceramic ultrafiltration membrane is stable. This allows for the rational adjustment of the regeneration and cleaning of the ceramic ultrafiltration membrane, improving the regeneration and cleaning effect and reducing the impact of insufficient regeneration and cleaning on subsequent use. The specific process of continuous performance traceability evaluation and analysis is as follows:

[0055] Obtain the membrane flux characteristic curve of the ceramic ultrafiltration membrane within the time threshold, obtain the point corresponding to the membrane flux equal to the preset membrane flux threshold from the membrane flux characteristic curve, and set it as the flux critical point;

[0056] The time between the end of the most recent cleaning of the ceramic ultrafiltration membrane and the corresponding time of the flux critical point is obtained and set as the continuous water purification time.

[0057] The total number of cleaning cycles of the ceramic ultrafiltration membrane is obtained and set as the cleaning baseline. The cleaning baseline is then processed to obtain a preset cleaning baseline range. A preset continuous water purification time threshold for cleaning baselines falling within this range is then obtained. Finally, the continuous water purification time is compared and analyzed with the preset continuous water purification time threshold.

[0058] If the continuous water purification time is less than the preset continuous water purification time threshold, a cleaning abnormality signal will be generated.

[0059] If the continuous water purification time is greater than or equal to the preset continuous water purification time threshold, a normal cleaning signal is generated. The abnormal cleaning signal or the normal cleaning signal is sent to the evaluation management unit. Upon receiving the abnormal cleaning signal or the normal cleaning signal, the evaluation management unit immediately performs the preset warning operation corresponding to the abnormal cleaning signal or the normal cleaning signal. This is to provide feedback on whether there are deficiencies in the regeneration and cleaning of the ceramic ultrafiltration membrane through verification, so as to make reasonable adjustments to the regeneration and cleaning of the ceramic ultrafiltration membrane and reduce the impact of deficiencies in the regeneration and cleaning of the ceramic ultrafiltration membrane on subsequent use.

[0060] In summary, this invention analyzes the cleaning of ceramic ultrafiltration membranes by dividing the membrane into regions. Specifically, it determines whether cleaning is necessary based on two points: permeability and pressure difference, ensuring the filtration performance and flux of the ceramic ultrafiltration membrane. Furthermore, it analyzes both physical and chemical cleaning processes through information feedback. This approach helps reduce defects in both processes, improving their reliability, and also facilitates monitoring of the cleaning process. This allows for the management and adjustment of any defects during the cleaning of the ceramic ultrafiltration membrane, thereby reducing the impact of deviations on the effectiveness of physical and chemical cleaning.

[0061] Simultaneously, the membrane flux characteristic curve of the ceramic ultrafiltration membrane is subjected to continuous performance traceability evaluation and analysis through information progression. That is, from the perspective of continuous use, the physical or chemical cleaning is evaluated to determine whether it is qualified, so as to make reasonable adjustments to the regeneration and cleaning of the ceramic ultrafiltration membrane, improve the regeneration and cleaning effect, and reduce the impact of insufficient regeneration and cleaning of the ceramic ultrafiltration membrane on subsequent use.

[0062] The threshold is set to facilitate comparison. The size of the threshold depends on the amount of sample data and the number of bases set by those skilled in the art for each set of sample data; as long as it does not affect the ratio between the parameter and the quantized value, it is acceptable.

[0063] The size of the coefficient is a specific value obtained by quantifying each parameter to facilitate subsequent comparison. The size of the coefficient depends on the amount of sample data and the corresponding operating coefficient initially set by those skilled in the art for each set of sample data; as long as it does not affect the proportional relationship between the parameter and the quantified value.

[0064] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A ceramic ultrafiltration membrane deep treatment system for tap water, characterized in that, It includes a water purification and treatment center, a treatment demand unit, a physical treatment unit, a chemical anti-clogging unit, a flux traceability unit, and an evaluation and management unit; The water purification treatment center is used to retrieve the fluid volume and pressure value of the ceramic ultrafiltration membrane, and send the fluid volume and pressure value to the treatment demand unit for parameter analysis and definition and cleaning discrimination analysis. The obtained permeability evaluation value and pressure difference evaluation value are compared and analyzed to obtain normal signal or cleaning signal. When a cleaning signal is generated, the physical processing unit is used to perform physical cleaning evaluation and feedback analysis on the backwash information collected from the backwashing equipment and the aeration information collected from the aeration equipment to obtain a stable backwash signal or a backwash risk signal. The chemical anti-clogging unit is used to perform defect risk quantitative evaluation and analysis on the collected chemical processing information to obtain a chemical qualified signal or a chemical deviation signal. The flux traceability unit is used to collect the membrane flux characteristic curve of the ceramic ultrafiltration membrane, and to conduct continuous traceability evaluation and analysis of the membrane flux characteristic curve to obtain the continuous water purification time. The obtained continuous water purification time is compared and analyzed with the preset continuous water purification time threshold to obtain the cleaning abnormal signal or the cleaning normal signal. The parameter analysis definition and cleanup discriminant analysis process are as follows: Set the monitoring period and set it as the time threshold. Obtain the amount of fluid passing through each unit membrane area per unit time within the time threshold of the ceramic ultrafiltration membrane. Compare and analyze the fluid amount with the preset fluid amount threshold. Set the unit membrane area corresponding to the fluid amount less than the preset fluid amount threshold as the non-permeable area and the unit membrane area corresponding to the fluid amount greater than or equal to the preset fluid amount threshold as the permeable area. Obtain the ratio between the total area corresponding to the non-permeable area and the total area corresponding to the permeable area and set it as the permeability evaluation value. The pressure values ​​on both sides of each unit membrane area of ​​the ceramic ultrafiltration membrane are obtained. Based on the pressure values ​​on both sides of the ceramic ultrafiltration membrane, the pressure difference on both sides of each unit membrane area is obtained and set as the unit pressure difference. The area corresponding to the unit pressure difference being greater than or equal to the preset unit pressure difference threshold is set as the unit risk area. The ratio of the total area corresponding to the unit risk area to the total area of ​​the ceramic ultrafiltration membrane is set as the pressure difference evaluation value. The permeability assessment value and differential pressure assessment value are compared and analyzed with the preset permeability assessment value threshold and preset differential pressure assessment value threshold to obtain the normal signal or the clean signal; The physical cleaning evaluation feedback analysis process is as follows: The backwashing information of the backwashing equipment and the aeration information of the aeration equipment are obtained within the time threshold. The backwashing information includes the backwashing duration and backwashing risk value, and the aeration information includes the aeration flow rate and operating speed. Among them, the backwash risk value represents the total time or overlapping time during which the corresponding values ​​of the operating condition information and characteristic information of the backwashing equipment exceed the preset threshold. The overlapping time means the time during which the corresponding values ​​of parameters in more than two operating condition information or characteristic information exceed the preset threshold. The operating condition information includes operating power and operating voltage, and the characteristic information includes vibration amplitude and operating temperature.

2. The tap water ceramic ultrafiltration membrane deep treatment system according to claim 1, characterized in that, The percentage of values ​​where the difference between the values ​​of aeration information at random times during the operation of the aeration equipment is less than a preset threshold is set as the aeration deviation value. The backwash risk value and aeration deviation value are compared and analyzed with the preset backwash risk value threshold and preset aeration deviation value threshold that are entered and stored internally to obtain a stable backwash signal or a backwash risk signal.

3. The tap water ceramic ultrafiltration membrane deep treatment system according to claim 1, characterized in that, The defect risk quantification and analysis process is as follows: Chemical treatment information of ceramic ultrafiltration membrane within a time threshold is obtained. The chemical treatment information includes cycle evaluation value and residual risk value. The cycle evaluation value and residual risk value are processed to obtain chemical qualification signal or chemical deviation signal.

4. The tap water ceramic ultrafiltration membrane deep treatment system according to claim 2, characterized in that, The number of cycles and the total duration of the ceramic ultrafiltration membrane cycle cleaning process within the time threshold are obtained. The number of cycles and the total duration of the cycle cleaning that are lower than the preset number of cycles and the preset total duration of the cycle cleaning are set as the cycle evaluation value. The washing water flow rate and washing area during the washing period of the ceramic ultrafiltration membrane are obtained. The sum of the time corresponding to the washing water flow rate deviating from the preset washing water flow rate range and the washing area below the preset washing area threshold is normalized and set as the residual hidden danger value.

5. The tap water ceramic ultrafiltration membrane deep treatment system according to claim 1, characterized in that, The process for continuous performance traceability evaluation and analysis is as follows: Obtain the membrane flux characteristic curve of the ceramic ultrafiltration membrane within the time threshold, obtain the point corresponding to the membrane flux equal to the preset membrane flux threshold from the membrane flux characteristic curve, and set it as the flux critical point. Obtain the time between the end of the most recent cleaning of the ceramic ultrafiltration membrane and the time corresponding to the flux critical point, and set it as the continuous water purification time.

6. The tap water ceramic ultrafiltration membrane deep treatment system according to claim 5, characterized in that, The total number of cleaning cycles of the ceramic ultrafiltration membrane is obtained and set as the cleaning baseline. The cleaning baseline is then processed to obtain the preset cleaning baseline range corresponding to the cleaning baseline. The preset continuous water purification time threshold for the cleaning baseline located in the corresponding preset cleaning baseline range is then obtained. The continuous water purification time is compared and analyzed with the preset continuous water purification time threshold to obtain the cleaning abnormal signal or the cleaning normal signal.

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