Ceramic ultrafiltration membrane advanced treatment system for tap water

Abstract

The invention relates to the technical field of water purification, in particular to a tap water ceramic ultrafiltration membrane advanced treatment system which comprises a water purification treatment center, a treatment demand unit, a physical treatment unit, a chemical anti-blocking unit, a flux tracing unit and an evaluation management unit. According to the method, the ceramic ultrafiltration membrane is cleaned and analyzed in a regional division mode, that is, whether the ceramic ultrafiltration membrane needs to be cleaned or not is judged from two points of permeability and pressure difference so as to ensure the filtering performance and flux of the ceramic ultrafiltration membrane, and analysis is performed from two points of physical cleaning and chemical cleaning in an information feedback mode so as to ensure the filtering performance and flux of the ceramic ultrafiltration membrane. The method is beneficial to reducing defects in physical cleaning and chemical cleaning so as to improve the reliability of the physical cleaning and the chemical cleaning, and meanwhile, whether the physical cleaning or the chemical cleaning is qualified is evaluated from the perspective of use continuity, so that regeneration cleaning of the ceramic ultrafiltration membrane is reasonably adjusted, and the service life of the ceramic ultrafiltration membrane is prolonged. And the influence of insufficient regeneration cleaning of the ceramic ultrafiltration membrane on subsequent use is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of water purification, and particularly to a deep treatment system for tap water ceramic ultrafiltration membranes. Background Art

[0002] At present, there are generally two mainstream processes in domestic water treatment plants. One is to use a sedimentation tank + sand filter for filtration. This process is mature in application and has relatively low operating costs. However, due to the low filtration accuracy of the sedimentation tank + sand filter process, there is a risk that microorganisms such as minute viruses and macromolecular organic substances enter the clear water tank and the water supply network. The other is to use a sedimentation tank + polymer ultrafiltration membrane process, and the effluent turbidity and indicators are better than those of the sand filter. However, in the prior art, it is impossible to conduct safety supervision on the regeneration cleaning of tap water ceramic ultrafiltration membranes, and thus it is impossible to promptly restore the filtration performance and flux of the ceramic ultrafiltration membranes, reducing the use effect of the ceramic ultrafiltration membranes. Moreover, it is impossible to manage the defects existing in physical and chemical treatments, resulting in the deficiencies in physical and chemical treatments reducing the subsequent use effect of the ceramic ultrafiltration membranes. In view of the above technical defects, a solution is now proposed. Summary of the Invention

[0003] The purpose of the present invention is to provide a deep treatment system for tap water ceramic ultrafiltration membranes to solve the above-mentioned technical defects. The present invention conducts cleaning analysis on the ceramic ultrafiltration membranes through regional division, that is, judges whether the ceramic ultrafiltration membranes need to be cleaned from two aspects of permeability and pressure difference to ensure the filtration performance and flux of the ceramic ultrafiltration membranes. And through information feedback, it analyzes from two aspects of physical cleaning and chemical cleaning, which helps to reduce the defects in physical cleaning and chemical cleaning to improve the reliability of physical cleaning and chemical cleaning. At the same time, through information progression, it conducts a continuous retrospective evaluation and analysis on the processing performance of the membrane flux characteristic curve of the ceramic ultrafiltration membranes, that is, evaluates whether physical cleaning or chemical cleaning is qualified from the perspective of use persistence, so as to reasonably adjust the regeneration cleaning of the ceramic ultrafiltration membranes to improve the effect of regeneration cleaning and at the same time reduce the impact of the deficiencies in the regeneration cleaning of the ceramic ultrafiltration membranes on subsequent use.

[0004] The purpose of the present invention can be achieved by the following technical solutions: A deep treatment system for tap water ceramic ultrafiltration membranes includes a water purification treatment center, a treatment requirement unit, a physical treatment unit, a chemical anti-blocking unit, a flux traceability unit, and an evaluation 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 requirement unit for parameter analysis definition and cleaning discrimination analysis, compare and analyze the obtained permeability evaluation value and pressure difference evaluation value, and obtain a normal signal or a cleaning signal. When a cleaning signal is generated, the physical processing unit is used to perform a physical cleaning evaluation and feedback analysis on the backwashing information of the backwashing device and the aeration information of the aeration device to obtain a stable backwashing signal or a backwashing risk signal, while the chemical anti-blocking unit is used to perform a defect risk quantification and evaluation analysis on the collected chemical treatment information to obtain a chemical qualified signal or a chemical deviation signal; The flux tracing unit is used to collect the membrane flux characteristic curve of the ceramic ultrafiltration membrane, perform a processing performance continuous tracing evaluation and analysis on the membrane flux characteristic curve, compare the obtained continuous water purification duration with a preset continuous water purification duration threshold, and obtain a cleaning abnormal signal or a cleaning normal signal.

[0005] Preferably, the parameter analysis definition and cleaning discrimination analysis process are as follows: Set a monitoring period and set it as a time threshold, obtain the fluid volume passing through each unit membrane area of the ceramic ultrafiltration membrane per unit time within the time threshold, compare the fluid volume with a preset fluid volume threshold, set the unit membrane area corresponding to the fluid volume less than the preset fluid volume threshold as the non-permeable area, set the unit membrane area corresponding to the fluid volume greater than or equal to the preset fluid volume 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; Obtain the pressure values on both sides of each unit membrane area of the ceramic ultrafiltration membrane, obtain the pressure difference on both sides of each unit membrane area based on the pressure values on both sides of the ceramic ultrafiltration membrane, and set it as the unit pressure difference. Set the area corresponding to the unit pressure difference greater than or equal to the preset unit pressure difference threshold as the unit risk area, and set the ratio of the total area corresponding to the unit risk area to the total area of the ceramic ultrafiltration membrane as the pressure difference evaluation value; Compare the permeability evaluation value and the pressure difference evaluation value with a preset permeability evaluation value threshold and a preset pressure difference evaluation value threshold to obtain a normal signal or a cleaning signal.

[0006] Preferably, the physical cleaning evaluation and feedback analysis process is as follows: Obtain the backwashing information of the backwashing device and the aeration information of the aeration device within the time threshold. The backwashing information includes the backwashing duration and the backwashing risk value, and the aeration information includes the aeration flow rate and the operating rotation speed; Among them, the backwashing risk value represents the total duration or the overlapping duration in which the corresponding numerical values of the working conditions information and the characteristic information of the backwashing device exceed the preset threshold within the backwashing duration. The overlapping duration represents the duration in which more than 2 parameter corresponding numerical values in the working conditions information or the characteristic information exceed the preset threshold at the same time. The working conditions information includes the operating power and the operating voltage, and the characteristic information includes the vibration amplitude and the operating temperature.

[0007] Preferably, the ratio of the number of differences between the values corresponding to the aeration information at random moments during the operation period of the aeration equipment that are less than the preset threshold is obtained, and the ratio of the number of differences between the values corresponding to the aeration information at random moments during the operation period of the aeration equipment that are less than the preset threshold is set as the aeration deviation value; The backwashing risk value and the aeration deviation value are compared and analyzed with the preset backwashing risk value threshold and the preset aeration deviation value threshold stored in it to obtain a stable backwashing signal or a backwashing risk signal.

[0008] Preferably, the defect risk quantitative evaluation and analysis process is as follows: The chemical treatment information of the ceramic ultrafiltration membrane within the time threshold is obtained. The chemical treatment information includes the cyclic evaluation value and the residual hidden danger value. The cyclic evaluation value and the residual hidden danger value are discriminated to obtain a chemical qualified signal or a chemical deviation signal.

[0009] Preferably, the number of cyclic cleaning times and the total cyclic cleaning duration during the cyclic cleaning process of the ceramic ultrafiltration membrane within the time threshold are obtained, and the number of those lower than the preset cyclic cleaning times threshold and the preset total cyclic cleaning duration threshold among the cyclic cleaning times and the total cyclic cleaning duration is set as the cyclic evaluation value; The washing water flow rate and the washing area during the flushing period of the ceramic ultrafiltration membrane are obtained, and the sum value obtained after data normalization of the part where the duration corresponding to the washing water flow rate deviating from the preset washing water flow rate range and the washing area is lower than the preset washing area threshold is set as the residual hidden danger value.

[0010] Preferably, the processing performance persistence traceability evaluation and analysis process is as follows: The membrane flux characteristic curve of the ceramic ultrafiltration membrane within the time threshold is obtained. The point corresponding to the membrane flux equal to the preset membrane flux threshold is obtained from the membrane flux characteristic curve and set as the flux critical point. The duration between the moment when the ceramic ultrafiltration membrane is closest to the end of the last cleaning and the moment corresponding to the flux critical point is obtained and set as the continuous water purification duration.

[0011] Preferably, the total number of cleanings of the ceramic ultrafiltration membrane is obtained, and the total number of cleanings of the ceramic ultrafiltration membrane is set as the cleaning base number, and the cleaning base number is discriminated to obtain the preset cleaning base number interval corresponding to the cleaning base number. Furthermore, the preset continuous water purification duration threshold corresponding to the cleaning base number in the corresponding preset cleaning base number interval is obtained, and the continuous water purification duration is compared and analyzed with the preset continuous water purification duration threshold to obtain a cleaning abnormal signal or a cleaning normal signal.

[0012] The beneficial effects of the present invention are as follows: (1) The present invention conducts cleaning analysis on ceramic ultrafiltration membranes through area division, that is, judging whether the ceramic ultrafiltration membranes need to be cleaned from two aspects: permeability and pressure difference, so as to ensure the filtration performance and flux of the ceramic ultrafiltration membranes. And through information feedback, it analyzes from two aspects: physical cleaning and chemical cleaning. 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 supervise the cleaning process in physical cleaning and chemical cleaning, so as to adjust the defects existing in the cleaning of ceramic ultrafiltration membranes, and further reduce the influence of deviation in the cleaning process on the effects of physical cleaning and chemical cleaning; (2) The present invention conducts continuous tracing and evaluation analysis on the processing performance of the membrane flux characteristic curve of ceramic ultrafiltration membranes through information progression, that is, evaluating whether physical cleaning or chemical cleaning is qualified from the perspective of use persistence, so as to reasonably adjust the regeneration cleaning of ceramic ultrafiltration membranes, improve the effect of regeneration cleaning, and at the same time reduce the influence of the deficiencies in the regeneration cleaning of ceramic ultrafiltration membranes on subsequent use. Description of the Drawings

[0013] The following further describes the present invention with reference to the drawings; Figure 1 is the system flow block diagram of the present invention; Figure 2 is the partial analysis diagram of Embodiment II of the present invention. Detailed Embodiments

[0014] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to 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 of 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 I

[0015] Please refer to Figures 1 to 2 As shown, the present invention is a deep treatment system for tap water ceramic ultrafiltration membranes, including a water purification treatment center, a treatment requirement unit, a physical treatment unit, a chemical anti-blocking unit, a flux tracing unit, and an evaluation management unit. The water purification treatment center is unidirectionally communicatively connected to the treatment requirement unit, and the treatment requirement unit is unidirectionally communicatively connected to the physical treatment unit, the chemical anti-blocking unit, and the evaluation management unit. Both the physical treatment unit and the chemical anti-blocking unit are unidirectionally communicatively connected to the flux tracing unit and the evaluation management unit, and the flux tracing unit is unidirectionally communicatively connected to the evaluation 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 requirement unit; The processing requirement unit is used to perform parameter analysis definition and cleaning discrimination analysis on the received fluid volume and pressure value to determine whether the ceramic ultrafiltration membrane needs to be cleaned, so as to ensure the filtration effect of the ceramic ultrafiltration membrane. The specific parameter analysis definition and cleaning discrimination analysis process are as follows: Set the monitoring period and set it as the time threshold. Obtain the fluid volume passing through each unit membrane area of the ceramic ultrafiltration membrane per unit time within the time threshold, and compare and analyze the fluid volume with the preset fluid volume threshold. Set the unit membrane area corresponding to the fluid volume less than the preset fluid volume threshold as the non-permeable area, and set the unit membrane area corresponding to the fluid volume greater than or equal to the preset fluid volume 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; Obtain the pressure values on both sides of each unit membrane area of the ceramic ultrafiltration membrane. Based on the pressure values on both sides of the ceramic ultrafiltration membrane, obtain the pressure difference on both sides of each unit membrane area and set it as the unit pressure difference. Set the area corresponding to the unit pressure difference greater than or equal to the preset unit pressure difference threshold as the unit risk area, and set the ratio of the total area corresponding to the unit risk area to the total area of the ceramic ultrafiltration membrane as the pressure difference evaluation value; Compare and analyze the permeability evaluation value and the pressure difference evaluation value with the preset permeability evaluation value threshold and the preset pressure difference evaluation value threshold: If the permeability evaluation value is less than the preset permeability evaluation value threshold and the pressure difference evaluation value is less than the preset pressure difference evaluation value threshold, generate a normal signal; If the permeability evaluation value is greater than or equal to the preset permeability evaluation value threshold, or the pressure difference evaluation value is greater than or equal to the preset pressure difference evaluation value threshold, generate a cleaning signal. Send the normal signal or the cleaning signal to the evaluation management unit. After receiving the normal signal or the cleaning signal, the evaluation management unit immediately performs the preset warning operation corresponding to the normal signal or the cleaning signal, so as to perform targeted cleaning treatment on the ceramic ultrafiltration membrane to restore the original filtration performance and flux of the ceramic ultrafiltration membrane, and then improve the water treatment effect. Embodiment 2

[0016] When a cleaning signal is generated, the physical processing unit is used to respond to the cleaning signal, collect the backwashing information of the backwashing device and the aeration information of the aeration device, and at the same time perform physical cleaning evaluation feedback analysis to understand whether the physical treatment method of the ceramic ultrafiltration membrane is stable and reliable, so as to ensure the physical treatment effect of the ceramic ultrafiltration membrane, and at the same time help to perform targeted management on the defects in the physical treatment process to improve the physical treatment effect of the ceramic ultrafiltration membrane. The specific physical cleaning evaluation feedback analysis process is as follows: Obtain the backwashing information of the backwashing device and the aeration information of the aeration device within the time threshold. The backwashing information includes the backwashing duration and the backwashing risk value, and the aeration information includes the aeration flow rate, the operating rotation speed, etc.; Among them, the backwashing risk value represents the total duration or overlapping duration during which the corresponding numerical values of the working condition information and characteristic information of the backwashing equipment exceed the preset threshold within the backwashing duration. The overlapping duration refers to the duration during which more than 2 parameter corresponding numerical values in the working condition information or characteristic information exceed the preset threshold at the same time. The working condition information includes operating power, operating voltage, etc., and the characteristic information includes vibration amplitude, operating temperature, etc. It should be noted that the backwashing risk value is a potential impact parameter reflecting the abnormal risk of ceramic ultrafiltration membrane cleaning; Obtain the ratio of the number of differences between the corresponding numerical values of the aeration information corresponding to random moments during the operation period of the aeration equipment that are less than the preset threshold, and set the ratio of the number of differences between the corresponding numerical values of the aeration information corresponding to random moments during the operation period of the aeration equipment that are less than the preset threshold as the aeration deviation value; Compare and analyze the backwashing risk value and the aeration deviation value with the preset backwashing risk value threshold and preset aeration deviation value threshold stored in it: If the backwashing risk value is less than the preset backwashing risk value threshold and the aeration deviation value is less than the preset aeration deviation value threshold, a stable backwashing signal is generated; If the backwashing risk value is greater than or equal to the preset backwashing risk value threshold, or the aeration deviation value is greater than or equal to the preset aeration deviation value threshold, a backwashing risk signal is generated, and the stable backwashing signal or the backwashing risk signal is sent to the evaluation management unit. After receiving the stable backwashing signal or the backwashing risk signal, the evaluation management unit immediately performs the preset warning operation corresponding to the stable backwashing signal or the backwashing risk signal to ensure the physical treatment effect of the ceramic ultrafiltration membrane, and at the same time helps to manage the defects in the physical treatment process targeted to improve the physical treatment effect of the ceramic ultrafiltration membrane; When a cleaning signal is generated, the chemical anti-clogging unit is used to respond to the cleaning signal, collect the chemical treatment information of the ceramic ultrafiltration membrane, and at the same time perform a defect risk quantitative evaluation and analysis on the chemical treatment information, so as to analyze whether there is a deviation in the treatment of the ceramic ultrafiltration membrane from the perspective of chemical treatment to ensure the stability and reliability of the entire ceramic ultrafiltration membrane treatment. The specific defect risk quantitative evaluation and analysis process is as follows: Obtain the number of cycle cleaning times and the total cycle cleaning duration during the cycle cleaning process of the ceramic ultrafiltration membrane within the time threshold, and set the number of cycle cleaning times and the total cycle cleaning duration that are lower than the preset cycle cleaning times threshold and the preset total cycle cleaning duration threshold as the cycle evaluation value. It should be noted that the cycle evaluation value is an impact parameter reflecting the cycle contact treatment of the ceramic ultrafiltration membrane with chemical agents; Obtain the washing water flow rate and washing area during the flushing period of the ceramic ultrafiltration membrane. Set the sum value obtained after normalizing the duration corresponding to the deviation of the washing water flow rate from the preset washing water flow rate range and the part where the washing area is lower than the preset washing area threshold as the residual hidden danger value. It should be noted that the residual hidden danger value is a risk parameter reflecting the potential impact of chemical agent residues on the ceramic ultrafiltration membrane; Obtain the chemical treatment information of the ceramic ultrafiltration membrane within the time threshold. The chemical treatment information includes the cyclic evaluation value and the residual hidden danger value, and perform discriminant processing on the cyclic evaluation value and the residual hidden danger value: 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, generate a chemical qualified signal; 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, generate a chemical deviation signal. Send the chemical qualified signal or the chemical deviation signal to the evaluation management unit. After receiving the chemical qualified signal or the chemical deviation signal, the evaluation management unit immediately performs the preset warning operation corresponding to the chemical qualified signal or the chemical deviation signal, so as to analyze whether there is a deviation in the treatment of the ceramic ultrafiltration membrane from the perspective of chemical treatment, so as to ensure the stability and reliability of the entire ceramic ultrafiltration membrane treatment. Embodiment III

[0017] The flux traceability unit is used to collect the membrane flux characteristic curve of the ceramic ultrafiltration membrane and perform a retrospective evaluation analysis of the processing performance persistence on the membrane flux characteristic curve, so as to judge whether the permeability persistence of the cleaned ceramic ultrafiltration membrane is stable, so as to reasonably adjust the regeneration cleaning of the ceramic ultrafiltration membrane to improve the effect of regeneration cleaning, and at the same time reduce the impact of the insufficient regeneration cleaning of the ceramic ultrafiltration membrane on subsequent use. The specific process of the retrospective evaluation analysis of the processing performance persistence 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 duration between the moment when the ceramic ultrafiltration membrane was last cleaned and the moment corresponding to the flux critical point, and set it as the continuous clean water duration; Obtain the total number of cleanings of the ceramic ultrafiltration membrane, set the total number of cleanings of the ceramic ultrafiltration membrane as the cleaning base number, perform discriminant processing on the cleaning base number, obtain the preset cleaning base number interval corresponding to the cleaning base number, and then obtain the preset continuous clean water duration threshold when the cleaning base number is within the corresponding preset cleaning base number interval, and compare and analyze the continuous clean water duration with the preset continuous clean water duration threshold: If the continuous clean water duration is less than the preset continuous clean water duration threshold, generate a cleaning abnormal signal; If the continuous water purification duration is greater than or equal to the preset continuous water purification duration threshold, a normal cleaning signal is generated, and the abnormal cleaning signal or the normal cleaning signal is sent to the evaluation management unit. After 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, so as to indirectly feedback whether there is a shortage in the regenerative cleaning of the ceramic ultrafiltration membrane through the verification method, so as to make a reasonable adjustment to the regenerative cleaning of the ceramic ultrafiltration membrane and reduce the impact of the shortage in the regenerative cleaning of the ceramic ultrafiltration membrane on subsequent use; In summary, the present invention analyzes and cleans the broken ceramic ultrafiltration membrane by means of regional division, that is, judges whether the ceramic ultrafiltration membrane needs to be cleaned from two points of permeability and pressure difference to ensure the filtration performance and flux of the ceramic ultrafiltration membrane. And through the information feedback method, it analyzes from two points of physical cleaning and chemical cleaning. On the one hand, it helps to reduce the defects in physical cleaning and chemical cleaning to improve the reliability of physical cleaning and chemical cleaning. On the other hand, it helps to supervise the cleaning process in physical cleaning and chemical cleaning, so as to manage and adjust the defects existing in the cleaning of the ceramic ultrafiltration membrane, and further reduce the impact of the deviation in the cleaning process on the effects of physical cleaning and chemical cleaning; At the same time, through the information progression method, a performance persistence traceability evaluation analysis is carried out on the membrane flux characteristic curve of the ceramic ultrafiltration membrane, that is, to indirectly evaluate whether physical cleaning or chemical cleaning is qualified from the perspective of use persistence, so as to make a reasonable adjustment to the regenerative cleaning of the ceramic ultrafiltration membrane to improve the effect of regenerative cleaning, and at the same time reduce the impact of the shortage in the regenerative cleaning of the ceramic ultrafiltration membrane on subsequent use.

[0018] The setting of the threshold value is for the convenience of comparison. Regarding the size of the threshold value, it depends on the amount of sample data and the number of bases set by those skilled in the art for each group of sample data; as long as it does not affect the proportional relationship between the parameter and the quantified value.

[0019] The size of the coefficient is a specific value obtained by quantifying each parameter for the convenience of subsequent comparison. Regarding the size of the coefficient, it depends on the amount of sample data and the corresponding operation coefficients initially set by those skilled in the art for each group of sample data; as long as it does not affect the proportional relationship between the parameter and the quantified value.

[0020] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A tap water ceramic ultrafiltration membrane deep treatment system, characterized in that: It includes water purification treatment center, treatment demand unit, physical treatment unit, chemical anti-clogging unit, flux tracing unit and evaluation 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 processing demand unit for parameter analysis definition and cleaning discrimination analysis, and compare and analyze the obtained permeability evaluation value and pressure difference evaluation value to obtain a normal signal or a cleaning signal; When a cleaning signal is generated, the physical processing unit is used to perform physical cleaning evaluation feedback analysis on the backwash information of the collected backwash equipment and the aeration information of the aeration equipment to obtain a stable backwash signal or a backwash risk signal, while the chemical anti-clogging unit is used to perform defect risk quantitative evaluation analysis on the collected chemical processing information to obtain a chemical qualified signal or a chemical deviation signal; The flux tracing unit is used to collect the membrane flux characteristic curve of the ceramic ultrafiltration membrane, and to perform traceability evaluation and analysis on the membrane flux characteristic curve for processing performance continuity. The obtained continuous water purification time is compared with the preset continuous water purification time threshold to obtain an abnormal cleaning signal or a normal cleaning signal.

2. A tap water ceramic ultrafiltration membrane deep treatment system according to claim 1, characterized in that: The parameter analysis definition and clean-up discriminant analysis process are as follows: Set a monitoring cycle and set it as a time threshold, obtain the amount of fluid passing through each unit membrane area of ​​the ceramic ultrafiltration membrane per unit time within the time threshold, and 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 set 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, and the pressure difference on both sides of each unit membrane area is obtained based on the pressure values ​​on both sides of the ceramic ultrafiltration membrane, and it is set as the unit pressure difference, and the area corresponding to the unit pressure difference greater than or equal to the preset unit pressure difference threshold is set as the unit risk area, and 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 evaluation value and the pressure difference evaluation value are compared and analyzed with the preset permeability evaluation value threshold and the preset pressure difference evaluation value threshold to obtain a normal signal or a clean-up signal.

3. A tap water ceramic ultrafiltration membrane deep treatment system according to claim 1, characterized in that: The physical cleaning evaluation feedback analysis process is as follows: Obtain backwash information of the backwash equipment and aeration information of the aeration equipment within the time threshold. The backwash information includes the backwash duration and backwash risk value, and the aeration information includes the aeration flow rate and operating speed. Among them, the backwash risk value indicates the total duration or overlap duration during which the corresponding values ​​of the operating condition information and characteristic information of the backwash equipment exceed the preset threshold value. The overlap duration indicates that there are more than two operating condition information or the corresponding values ​​of the parameters in the characteristic information exceed the preset threshold value. The operating condition information includes operating power and operating voltage, and the characteristic information includes vibration amplitude and operating temperature.

4. A tap water ceramic ultrafiltration membrane deep treatment system according to claim 3, characterized in that: Obtaining that the difference between the values ​​corresponding to the aeration information corresponding to random moments during the operation period of the aeration equipment is less than the value corresponding to the preset threshold, and setting the value corresponding to the difference between the values ​​corresponding to the aeration information corresponding to random moments during the operation period of the aeration equipment is less than the value corresponding to the preset threshold as the aeration deviation value; The backwash risk value and the aeration deviation value are compared and analyzed with the preset backwash risk value threshold and the preset aeration deviation value threshold that are internally entered and stored to obtain a stable backwash signal or a backwash risk signal.

5. A tap water ceramic ultrafiltration membrane deep treatment system according to claim 1, characterized in that: The defect risk quantitative evaluation and analysis process is as follows: The chemical treatment information of the ceramic ultrafiltration membrane within the time threshold is obtained, and the chemical treatment information includes a cycle evaluation value and a residual hidden danger value. The cycle evaluation value and the residual hidden danger value are discriminated and processed to obtain a chemical qualified signal or a chemical deviation signal.

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

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

8. A tap water ceramic ultrafiltration membrane deep treatment system according to claim 7, characterized in that: The total number of cleaning times of the ceramic ultrafiltration membrane is obtained, and the total number of cleaning times of the ceramic ultrafiltration membrane is set as the cleaning base, and the cleaning base is discriminated and processed to obtain a preset cleaning base interval corresponding to the cleaning base, and then the preset continuous water purification time threshold value when the cleaning base value is in the corresponding preset cleaning base interval is obtained, and the continuous water purification time is compared and analyzed with the preset continuous water purification time threshold value to obtain a cleaning abnormality signal or a cleaning normal signal.

Images