A dynamic regulation and control water treatment method based on seasonal water quality fluctuation

Abstract

The application provides a dynamic regulation and control water treatment method based on seasonal water quality fluctuation. The application calculates the aeration intensity of the backwashing pipeline at the bottom of the multi-stage filtering subsystem in the water treatment system, the coagulant dosage of the coagulant dosing device of the coagulation subsystem in the water treatment system and the ozone dosage of the ozone generator of the disinfection subsystem in the water treatment system after obtaining the suspended solids concentration, the PH value and the temperature of the effluent at the outlet of the pretreatment subsystem in the water treatment system, the organic matter content of the effluent at the outlet of the coagulation subsystem in the water treatment system and the microbial content at the outlet of the disinfection subsystem in the water treatment system, so as to control the corresponding devices according to the obtained data. The application is beneficial to improving the water treatment efficiency and the stability of the effluent water quality in different seasons, thereby ensuring the efficient stability of the effluent water quality.

Description

Technical Field

[0001] This application relates to the field of water treatment technology, and more specifically, to a dynamic control water treatment method based on seasonal water quality fluctuations. Background Technology

[0002] With the increasing prominence of water pollution, water treatment technology plays an increasingly important role in ensuring water security and sustainable utilization. Especially in scenarios with significant seasonal fluctuations in water quality, developing dynamically controllable water treatment methods has gradually become a research hotspot. Traditional water treatment technologies typically employ fixed process parameters and equipment configurations, making it difficult to adapt to seasonal variations in water quality, such as changes in the concentrations of suspended solids, organic matter, and heavy metal ions. This fixed design often leads to decreased treatment efficiency or unstable effluent quality in different seasons, failing to meet the requirements of modern water treatment for both high efficiency and stability. Summary of the Invention

[0003] In view of this, the present application provides a dynamic water treatment method based on seasonal water quality fluctuations to improve the efficiency of water treatment and the stability of effluent water quality in different seasons, thereby ensuring high efficiency and stability of effluent water quality.

[0004] This application provides a dynamic water treatment method based on seasonal water quality fluctuations. The dynamic water treatment method is used to adjust the process parameters of a water treatment system. The method includes: After obtaining the suspended solids concentration, pH value, and temperature of the effluent at the outlet of the pretreatment subsystem in the water treatment system, the organic matter content of the effluent at the outlet of the coagulation subsystem in the water treatment system, and the microbial content at the outlet of the disinfection subsystem in the water treatment system, the aeration intensity of the backwashing pipeline installed at the bottom of the multi-stage filtration subsystem in the water treatment system is calculated according to the following formula:

[0005] in, The input variables are suspended solids concentration, pH value, and temperature. The number of input variables, These are the weighting coefficients for each input variable. For the currently input variable, For bias terms; The coagulant dosage of the coagulant dosing device installed in the coagulation subsystem of the water treatment system is calculated according to the following formula:

[0006] in, T The temperature is...S The concentration of the suspended matter is... O The organic matter content, C 0 represents the basic dosage of coagulant. , , These are the weighting coefficients; The ozone dosage of the ozone generator installed in the disinfection subsystem of the water treatment system is calculated according to the following formula:

[0007] in, M The microbial content, P The pH value is... D 0 represents the baseline ozone dosage. , b These are the weighting coefficients; The dosage of the backwash pipeline, the coagulant dosing device, and the ozone generator are controlled according to the aeration intensity, the coagulant dosage, and the ozone dosage, respectively.

[0008] The technical solutions provided by the embodiments of this application may include the following beneficial effects: This application obtains the suspended solids concentration, pH value, and temperature of the effluent at the outlet of the pretreatment subsystem in the water treatment system, the organic matter content of the effluent at the outlet of the coagulation subsystem, and the microbial content at the outlet of the disinfection subsystem. Based on this data, it calculates the aeration intensity of the backwashing pipeline at the bottom of the multi-stage filtration subsystem, the coagulant dosage of the coagulant dosing device in the coagulation subsystem, and the ozone dosage of the ozone generator in the disinfection subsystem. According to this data, the corresponding devices are controlled. This control allows for adaptive adjustment of the process parameters of the water treatment system based on seasonal changes, thereby improving the efficiency of water treatment and the stability of effluent quality in different seasons, ensuring high efficiency and stability of the effluent quality.

[0009] To make the above-mentioned objectives, features and advantages of this application more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0010] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0011] Figure 1 A schematic diagram of a dynamic water treatment method based on seasonal water quality fluctuations provided in this application embodiment; Figure 2 A process flow diagram of a water treatment system provided in this application embodiment; Figure 3 A process flow diagram of a pretreatment subsystem provided in this application embodiment; Figure 4 A process flow diagram of a coagulation subsystem provided in this application embodiment; Figure 5 A process flow diagram of a multi-stage filtration subsystem provided in this application embodiment; Figure 6 This is a process flow diagram of a disinfection subsystem provided in an embodiment of this application. Detailed Implementation

[0012] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely represents selected embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0013] In the prior art, patent CN103739124B proposes a high-efficiency water treatment system comprising units such as a heavy media coagulation reaction tank, a rapid sedimentation tank, and a membrane tank. This system achieves high effluent quality and economic efficiency through heavy media recycling and multi-stage treatment processes. However, this technical solution has poor adaptability to water quality fluctuations. Its process parameters are mainly set based on fixed water quality conditions and cannot be dynamically adjusted according to seasonal water quality changes. Furthermore, the system has a low degree of automation, relies on manual adjustment, and struggles to achieve real-time response to complex water quality changes.

[0014] Another patent, CN106186318B, proposes a sludge-film composite SBR water treatment process. By dividing the SBR tank into two zones and combining sludge recirculation and aeration processes, it improves volumetric loading and effluent quality. However, this technology also lacks the ability to specifically control seasonal water quality fluctuations. Its operating cycle and process parameters are set based on static water quality conditions, failing to fully consider changes in water composition across different seasons (such as reduced microbial activity under low winter temperatures or increased suspended solids concentration during the rainy season). Furthermore, this process requires a high level of operator experience, and in practical applications, there may be issues with control lag, further limiting its adaptability and stability.

[0015] The aforementioned problems indicate that existing water treatment technologies have significant shortcomings in addressing seasonal water quality fluctuations, mainly in the following aspects: First, process parameters are fixed and cannot be dynamically adjusted according to water quality changes; second, the level of automation is low, making real-time monitoring and intelligent control difficult; and third, adaptability to complex water quality conditions is limited, potentially leading to decreased treatment efficiency or increased operating costs. Therefore, there is an urgent need to develop a dynamic control water treatment method based on seasonal water quality fluctuations. By introducing an intelligent control mechanism and combining real-time monitoring data to dynamically optimize process parameters, the adaptability and stability of the water treatment system can be improved, thereby meeting the demands of the modern water treatment field for efficient and intelligent technologies.

[0016] It should be noted that the online water quality monitoring unit in this application includes various types of sensors, and the specific type of sensor needs to be set according to the collected data.

[0017] The embodiments of this application will be described in detail below.

[0018] Figure 1 This application provides a schematic flowchart of a dynamic water treatment method based on seasonal water quality fluctuations, which is used to adjust the process parameters of a water treatment system, such as... Figure 1 As shown, the method includes the following steps: Step 101: After obtaining the suspended solids concentration, pH value, and temperature of the effluent at the outlet of the pretreatment subsystem in the water treatment system, the organic matter content of the effluent at the outlet of the coagulation subsystem in the water treatment system, and the microbial content at the outlet of the disinfection subsystem in the water treatment system, calculate the aeration intensity of the backwashing pipeline installed at the bottom of the multi-stage filtration subsystem in the water treatment system according to Formula 1: (Formula 1) in, The input variables are suspended solids concentration, pH value, and temperature. The number of input variables, These are the weighting coefficients for each input variable. For the currently input variable, This is a bias term.

[0019] Step 102: Calculate the coagulant dosage of the coagulant dosing device installed in the coagulation subsystem of the water treatment system according to Formula 2: (Formula 2) in, T The temperature is... S The concentration of the suspended matter is... O The organic matter content, C 0 represents the basic dosage of coagulant. , , These are the weighting coefficients.

[0020] Step 103: Calculate the ozone dosage of the ozone generator installed in the disinfection subsystem of the water treatment system according to Formula 3: (Formula 3) in, M The microbial content, P The pH value is... D 0 represents the baseline ozone dosage. , b These are the weighting coefficients.

[0021] Step 104: Control the dosage of the backwash pipeline, the coagulant dosing device, and the ozone generator according to the aeration intensity, the coagulant dosage, and the ozone dosage.

[0022] Specifically, this application obtains the suspended solids concentration, pH value, and temperature of the effluent at the outlet of the pretreatment subsystem in the water treatment system, the organic matter content of the effluent at the outlet of the coagulation subsystem in the water treatment system, and the microbial content at the outlet of the disinfection subsystem in the water treatment system. Based on this data, it calculates the aeration intensity of the backwashing pipeline at the bottom of the multi-stage filtration subsystem, the coagulant dosage of the coagulant dosing device in the coagulation subsystem, and the ozone dosage of the ozone generator in the disinfection subsystem. According to this data, the corresponding devices are controlled. This control allows for adaptive adjustment of the process parameters of the water treatment system based on seasonal changes, thereby improving the efficiency of water treatment and the stability of effluent quality in different seasons, ensuring high efficiency and stability of the effluent quality.

[0023] It should be noted that the weighting coefficients of each input variable... and bias terms It is obtained through continuous optimization via neural network training; the unit for coagulant dosage is mg / L, the unit for temperature is ℃, the unit for suspended solids concentration is mg / L, the unit for organic matter content is mg / L, and the unit for basic coagulant dosage is mg / L. , , It was obtained through fitting experimental data, specifically for water quality at low temperatures in winter. The value range is 0.1-0.3. The value range is 0.05-0.1. The value range is 0.2-0.5; the unit for basic ozone dosage is mg / L, and the unit for microbial content is CFU / mL. The unit for basic ozone dosage is mg / L. The value range is 0.5-1.0. b The value range is 0.1-0.3; if the microbial content is high, the disinfection effect can be enhanced by increasing the ozone dosage or extending the ultraviolet irradiation time.

[0024] In a feasible implementation plan Figure 2 A process flow diagram of a water treatment system provided in this application embodiment is shown below. Figure 2 As shown, the water treatment system consists of two main parts: a process treatment system (including a pretreatment subsystem, a coagulation subsystem, a multi-stage filtration subsystem, and a disinfection subsystem) and a control system (an online water quality monitoring unit and a central control unit). Figure 2 In the diagram, dashed arrows indicate the flow of the processing, while solid arrows indicate parameter acquisition and control. The central control unit controls the various actuators within the processing system. The control system can acquire process parameters from the processing system and then, based on the acquired parameters,... Figure 1 The calculation is performed using the method shown, and then the process control of the process system is performed, such as... Figure 2 As shown, the raw water flows sequentially through the pretreatment subsystem, the coagulation subsystem, the multi-stage filtration subsystem, and the disinfection subsystem before being stored in a clean water storage tank. The pretreatment subsystem is used to perform preliminary water treatment, the coagulation subsystem is used to promote floc formation, the multi-stage filtration subsystem is used to filter the water, and the disinfection subsystem is used to disinfect the water.

[0025] The online water quality monitoring unit is located at the outlet of the pretreatment subsystem to collect the suspended solids concentration, pH value, temperature, and organic matter content; it is also located at the outlet of the coagulation subsystem to collect the organic matter content; and it is located at the outlet of the disinfection subsystem to collect the microbial content. The dynamic water treatment method operates in the central control system. The actuators include the coagulant dosing device, the backwash pipeline, and the ozone generator. The coagulant dosage of the coagulant dosing device, the aeration intensity of the backwash pipeline, and the ozone dosage of the ozone generator are controlled by the central control system.

[0026] like Figure 2 As shown, the water treatment system also includes a data storage and analysis unit for recording historical data and making trend predictions.

[0027] In a feasible implementation plan Figure 3 A process flow diagram of a pretreatment subsystem provided in this application embodiment is shown below. Figure 3 As shown ( Figure 3 The dashed arrows indicate the flow direction of the process, solid arrows indicate parameter acquisition, and solid lines indicate connectivity. The pretreatment subsystem includes a coarse screen, a fine screen, and a regulating tank arranged sequentially along the flow direction of the raw water. The coarse and fine screens are used to remove impurities of different particle sizes. The regulating tank is equipped with a stirring device to homogenize the water quality; the stirring speed of the stirring device is adjusted by the central control unit. The regulating tank is connected to an acid-base adjustment device, which is used to initially adjust the pH value of the water entering the regulating tank. The dosage of the acid-base adjustment device is adjusted by the central control unit. An online water quality monitoring unit is installed at the outlet of the regulating tank to collect basic parameters such as suspended solids concentration, pH value, and temperature. These parameters are transmitted via data transmission lines and collected by the online water quality monitoring unit, providing a basis for subsequent process parameter adjustments. In actual operation, when raw water enters the pretreatment subsystem, the coarse screen first intercepts large particles of impurities, and then the fine screen further removes smaller particles. The stirring device in the regulating tank adjusts its stirring speed according to the instructions of the central control unit to ensure the homogeneity of water quality and quantity. The acid-base adjustment device dynamically adjusts the dosage based on the pH data collected by the online water quality monitoring unit to ensure that the pH value of the effluent reaches the set range.

[0028] In a feasible implementation plan, such as Figure 3 As shown, the regulating tank is equipped with a sludge discharge port at the bottom and an overflow port at the top to ensure the stability of water quality and quantity.

[0029] In a feasible implementation plan Figure 4A process flow diagram of a coagulation subsystem provided in this application embodiment is shown below. Figure 4 As shown ( Figure 4 (The dashed arrows indicate the flow direction of the process, the solid arrows indicate control, and the solid lines indicate connection.) The coagulation subsystem includes a coagulation reaction tank and a flocculation reaction tank arranged sequentially along the flow direction of the raw water. The coagulation reaction tank is equipped with an adjustable speed stirrer with a stirring speed range of 100-300 r / min. The coagulation reaction tank is connected to the coagulant dosing device, which includes a storage tank, a metering pump, and a dosing pipeline. The metering pump adjusts the coagulant dosage according to the instructions of the central control unit. The flocculation reaction tank is equipped with a low-speed stirrer with a stirring speed range of 30-80 r / min. The low-speed stirrer is used to promote floc formation through low-speed stirring. The online water quality detection unit is installed at the outlet of the flocculation reaction tank.

[0030] It should be noted that the online water quality monitoring unit can also collect other water quality parameters of the coagulation subsystem, such as water turbidity and conductivity. The specific type of online water quality monitoring unit can be set according to the type of data to be collected, and no specific limitation is made here.

[0031] In a feasible implementation plan, such as Figure 4 As shown, the coagulation subsystem further includes an inclined plate sedimentation tank and a sludge thickening tank. After flocculation, the water undergoes solid-liquid separation through the inclined plate sedimentation tank. A sludge discharge valve is installed at the bottom of the inclined plate sedimentation tank, through which sludge is discharged to the sludge thickening tank. The sludge thickening tank is connected to the sludge treatment system through a sludge pump.

[0032] Specifically, in actual operation, the effluent from the equalization tank enters the coagulation reaction tank, where it is thoroughly mixed with the coagulant under stirring conditions. The stirring speed of the adjustable-speed agitator is dynamically adjusted by the central control unit based on online water quality monitoring data to ensure optimal coagulation effect, or a constant stirring speed can be used. After coagulation, the effluent enters the flocculation reaction tank for low-speed stirring to promote floc formation. After flocculation, the effluent enters the inclined plate sedimentation tank for solid-liquid separation, and the sludge is transported to the sludge thickening tank via a sludge pump. During this process, the coagulant dosage can be adjusted according to... Figure 1 The method shown allows for dynamic adjustment.

[0033] In one feasible implementation, both the coagulation reaction tank and the flocculation reaction tank are equipped with heating devices to raise the water temperature under low-temperature conditions, thereby enhancing the coagulation effect. Especially under the conditions of low temperature in winter and high suspended solids concentration in the rainy season, the heating devices and dynamic coagulant dosing strategy effectively improve the coagulation efficiency and effluent quality. The heating devices are automatically started and stopped by the central control unit based on the temperature parameters in the monitoring data. The coagulant in the coagulant dosing device is a composite polymer, including polyacrylamide and chitosan. The coagulant dosing device also includes a dissolving tank and a stirrer for fully dissolving the coagulant.

[0034] In a feasible implementation plan Figure 5 A process flow diagram of a multi-stage filtration subsystem provided in this application embodiment is shown below. Figure 5 As shown ( Figure 5 The dashed arrows indicate the flow direction of the process, and the solid arrows indicate control. The multi-stage filtration subsystem includes a sand filter, an activated carbon filter, and a precision filter arranged sequentially along the direction of the raw water flow. The supernatant obtained after solid-liquid separation in the inclined plate sedimentation tank flows to the sand filter. The sand filter is filled with quartz sand of different particle sizes to remove suspended particles. The activated carbon filter is filled with modified activated carbon to adsorb organic matter and heavy metal ions. The precision filter has multiple layers of microporous membranes to remove small particles and colloidal substances. Backwashing pipelines are provided at the bottom of both the sand filter and the activated carbon filter. The modified activated carbon is oxidized to form carboxyl and hydroxyl functional groups. The specific surface area of ​​the modified activated carbon is greater than 1200 m² / g, and the iodine value is greater than 1000 mg / g. The aeration intensity of the backwashing pipeline is determined according to... Figure 1 The method shown is used for dynamic control to ensure optimal filtration results.

[0035] Specifically, in actual operation, the supernatant from the inclined plate sedimentation tank undergoes multi-stage filtration, passing through a sand filter, an activated carbon filter, and a precision filter. The sand filter effectively removes suspended particles using quartz sand of varying particle sizes. The activated carbon filter adsorbs organic matter and heavy metal ions through modified activated carbon, ensuring high efficiency and stability of the effluent quality. The precision filter further removes fine particles and colloidal substances. The aeration intensity directly affects the backwashing intensity of the backwashing pipeline. The modified activated carbon, through oxidation modification treatment, has a surface rich in carboxyl and hydroxyl functional groups, resulting in stronger adsorption capacity.

[0036] It should be noted that the online water quality monitoring unit can also be installed at the outlet of the multi-stage filtration subsystem to collect the water quality parameters after filtration.

[0037] In a feasible implementation plan Figure 6 A process flow diagram of a disinfection subsystem provided in this application embodiment is shown below. Figure 6As shown ( Figure 5 (The dashed arrow indicates the flow direction of the process, and the solid arrow indicates the control.) The disinfection subsystem also includes an ultraviolet sterilizer. The water flowing through the precision filter flows to the ozone generator. The ozone generator is connected to the clean water pipeline through a gas-liquid mixer. The ultraviolet sterilizer is located at the end of the clean water pipeline. The end of the clean water pipeline is connected to the clean water storage tank. The online water quality detection unit is installed at the end of the clean water pipeline.

[0038] Specifically, in actual operation, the multi-stage filtered water enters the clean water pipeline and undergoes disinfection treatment via an ozone generator and an ultraviolet sterilizer. The ozone dosage is determined according to... Figure 1 The method shown allows for dynamic adjustment. In one feasible implementation, the clean water storage tank is equipped with a liquid level sensor and a water quality sensor, and the outlet of the clean water storage tank is equipped with an online water quality monitoring unit for acquiring the water quality parameters of the clean water storage tank. The liquid level sensor and the water quality sensor monitor the clean water storage volume and water quality in real time to ensure efficient and stable effluent water quality.

[0039] like Figures 1-6 As shown, in practical applications, such as a city water treatment plant, the method of this invention is used to treat raw water with significant seasonal fluctuations in water quality. During the summer rainy season, the concentration of suspended solids in the raw water is high. The central control unit dynamically adjusts process parameters, and even the stirring speed, based on online water quality monitoring data to ensure optimal coagulation. In winter, under low-temperature conditions, the heating device is activated to raise the water temperature and enhance the coagulation effect. At the same time, the dosage of coagulant aid is dynamically adjusted to ensure efficient and stable effluent quality. The modified activated carbon in the multi-stage filtration module significantly enhances the removal capacity of organic matter and heavy metal ions, ensuring that the effluent quality meets standards. The post-treatment module enhances the disinfection effect through an ozone generator and an ultraviolet sterilizer. The final effluent enters a clear water storage tank for storage. Liquid level sensors and water quality sensors monitor the clear water storage volume and water quality in real time to ensure efficient and stable effluent quality.

[0040] In summary, this invention achieves real-time response and dynamic regulation to water quality fluctuations through intelligent monitoring and control, significantly improving the adaptability and stability of the water treatment system. Especially under conditions of low temperatures in winter and high suspended solids concentrations during the rainy season, the heating device and dynamic adjustment strategy effectively improve coagulation efficiency and effluent quality. The modified activated carbon in the multi-stage filtration module further enhances the removal capacity of organic matter and heavy metal ions, ensuring highly efficient and stable effluent quality.

[0041] In the embodiments provided in this application, it should be understood that the disclosed apparatus and methods can be implemented in other ways. The apparatus embodiments described above are merely illustrative. For example, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. Furthermore, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Additionally, the displayed or discussed mutual couplings, direct couplings, or communication connections may be through some communication interfaces; indirect couplings or communication connections between devices or units may be electrical, mechanical, or other forms.

[0042] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0043] In addition, the functional units in the embodiments provided in this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit.

[0044] If the aforementioned functions are implemented as software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or a portion of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0045] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. In addition, the terms "first", "second", "third", etc. are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0046] Finally, it should be noted that the above-described embodiments are merely specific implementations of this application, used to illustrate the technical solutions of this application, and not to limit them. The protection scope of this application is not limited thereto. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that any person skilled in the art can still modify or easily conceive of changes to the technical solutions described in the foregoing embodiments, or make equivalent substitutions for some of the technical features, within the scope of the technology disclosed in this application; and these modifications, changes, or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application. All should be covered within the protection scope of this application. Therefore, the protection scope of this application should be determined by the protection scope of the claims.

Claims

1. A dynamic water treatment method based on seasonal water quality fluctuations, characterized in that, The dynamic control water treatment method is used to adjust the process parameters of a water treatment system, and the method includes: After obtaining the suspended solids concentration, pH value, and temperature of the effluent at the outlet of the pretreatment subsystem in the water treatment system, the organic matter content of the effluent at the outlet of the coagulation subsystem in the water treatment system, and the microbial content at the outlet of the disinfection subsystem in the water treatment system, the aeration intensity of the backwashing pipeline installed at the bottom of the multi-stage filtration subsystem in the water treatment system is calculated according to the following formula: in, The input variables are suspended solids concentration, pH value, and temperature. The number of input variables, These are the weighting coefficients for each input variable. For the currently input variable, The bias term is defined as the weight coefficients of each input variable. and bias terms It is obtained through continuous optimization via neural network training; The coagulant dosage of the coagulant dosing device installed in the coagulation subsystem of the water treatment system is calculated according to the following formula: in, T The temperature is [temperature value]. S The concentration of the suspended matter is... O The organic matter content, C 0 represents the basic dosage of coagulant. , , These are the weighting coefficients, where, , , It was obtained by fitting experimental data; The ozone dosage of the ozone generator installed in the disinfection subsystem of the water treatment system is calculated according to the following formula: in, M The microbial content, P The pH value is... D 0 represents the baseline ozone dosage. , b Here, are the weighting coefficients, The value range is 0.5-1.

0. b The value range is 0.1-0.3; The dosage of the backwash pipeline, the coagulant dosing device, and the ozone generator are controlled according to the aeration intensity, the coagulant dosage, and the ozone dosage, respectively. The multi-stage filtration subsystem includes a sand filter, an activated carbon filter, and a precision filter arranged sequentially along the direction of raw water flow. The sand filter is filled with quartz sand of different particle sizes to remove suspended particles. The activated carbon filter is filled with modified activated carbon to adsorb organic matter and heavy metal ions. The precision filter has multiple microporous membranes to remove small particles and colloidal substances. Backwashing pipes are provided at the bottom of both the sand filter and the activated carbon filter. The modified activated carbon is oxidatively modified to form carboxyl and hydroxyl functional groups. The specific surface area of ​​the modified activated carbon is greater than 1200 m² / g, and the iodine value is greater than 1000 mg / g.

2. The dynamic water treatment method as described in claim 1, characterized in that, The pretreatment subsystem is used for preliminary treatment of water quality, the coagulation subsystem is used to promote floc formation, the multi-stage filtration subsystem is used for water filtration, and the disinfection subsystem is used for water disinfection. The raw water flows sequentially through the pretreatment subsystem, the coagulation subsystem, the multi-stage filtration subsystem, and the disinfection subsystem before being stored in a clean water storage tank. The water treatment system further includes: an online water quality monitoring unit, a central control unit, and an actuator. The online water quality monitoring unit is located at the outlet of the pretreatment subsystem to collect the suspended solids concentration, pH value, temperature, and organic matter content; it is located at the outlet of the coagulation subsystem to collect the organic matter content; and it is located at the outlet of the disinfection subsystem to collect the microbial content. The dynamic water treatment method operates in the central control unit. The actuator includes a coagulant dosing device, a backwash pipeline, and an ozone generator. The coagulant dosage of the coagulant dosing device, the aeration intensity of the backwash pipeline, and the ozone dosage of the ozone generator are controlled by the central control unit. The water treatment system also includes a data storage and analysis unit for recording historical data and making trend predictions.

3. The dynamic water treatment method as described in claim 2, characterized in that, The pretreatment subsystem includes a coarse screen, a fine screen, and an equalization tank arranged sequentially along the flow direction of the raw water. The coarse screen and the fine screen are used to remove impurities of different particle sizes. The equalization tank is equipped with a stirring device to homogenize the water quality, and the stirring speed of the stirring device is adjusted by the central control unit. The equalization tank is connected to an acid-base adjustment device, which is used to initially adjust the pH value of the water entering the equalization tank. The dosage of the acid-base adjustment device is adjusted by the central control unit. An online water quality detection unit is installed at the outlet of the equalization tank.

4. The dynamic water treatment method as described in claim 3, characterized in that, The regulating tank is equipped with a sludge discharge port at the bottom and an overflow port at the top to ensure the stability of water quality and quantity.

5. The dynamic water treatment method as described in claim 2, characterized in that, The coagulation subsystem includes a coagulation reaction tank and a flocculation reaction tank arranged sequentially along the flow direction of the raw water. The coagulation reaction tank is equipped with an adjustable speed stirrer with a stirring speed range of 100-300 r / min. The coagulation reaction tank is connected to the coagulant dosing device, which includes a storage tank, a metering pump, and a dosing pipeline. The metering pump adjusts the amount of coagulant added according to the instructions of the central control unit. The flocculation reaction tank is equipped with a low-speed stirrer with a stirring speed range of 30-80 r / min. The low-speed stirrer is used to promote floc formation by stirring at a low speed. The online water quality detection unit is installed at the outlet of the flocculation reaction tank.

6. The dynamic control water treatment method as described in claim 5, characterized in that, The coagulation subsystem also includes an inclined plate sedimentation tank and a sludge thickening tank. After flocculation, the water undergoes solid-liquid separation in the inclined plate sedimentation tank. A sludge discharge valve is installed at the bottom of the inclined plate sedimentation tank, through which sludge is discharged to the sludge thickening tank. The sludge thickening tank is connected to the sludge treatment system via a sludge pump.

7. The dynamic water treatment method as described in claim 5, characterized in that, Both the coagulation reaction tank and the flocculation reaction tank are equipped with heating devices; the coagulant in the coagulant dosing device is a composite polymer, including polyacrylamide and chitosan; the coagulant dosing device also includes a dissolving tank and a stirrer.

8. The dynamic control water treatment method as described in claim 6, characterized in that, The supernatant obtained after solid-liquid separation in the inclined plate sedimentation tank flows to the sand filter tank.

9. The dynamic control water treatment method as described in claim 8, characterized in that, The disinfection subsystem also includes an ultraviolet sterilizer. The water flowing through the precision filter flows to the ozone generator. The ozone generator is connected to the clean water pipeline through a gas-liquid mixer. The ultraviolet sterilizer is located at the end of the clean water pipeline. The end of the clean water pipeline is connected to the clean water storage tank. The online water quality detection unit is located at the end of the clean water pipeline.

10. The dynamic control water treatment method as described in claim 9, characterized in that, The clean water storage tank is equipped with a liquid level sensor and a water quality sensor. An online water quality detection unit is installed at the outlet of the clean water storage tank to obtain the water quality parameters of the clean water storage tank.

Images