Energy-saving type pure water production control method and system

Abstract

The invention relates to the technical field of pure water production, and discloses an energy-saving type pure water production control method and system, and the method comprises the following steps: carrying out actual parameter detection on a water source, and setting pretreatment parameters according to a detection result to prepare a pretreated water material. The pretreatment step comprises the steps of adding a flocculating agent, precipitating, filtering, adding a disinfectant and softening. Then, the pretreated water material is subjected to ultrapure water production through a distillation technology, and then ultrapure water is obtained. And performing quality detection on the obtained ultrapure water, and determining whether subsequent treatment is needed or not according to a detection result. If the detection result indicates that follow-up processing is needed, the follow-up processing type and parameters are determined according to the quality detection result. According to the energy-saving type pure water production control method and system, accurate control, efficient energy utilization and stable water quality guarantee are achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of pure water production, and in particular to a control method and system for energy-saving pure water production. Background Art

[0002] In today's ever-changing era, with the rapid advancement of industrialization and the significant improvement of people's quality of life, the demand for high-quality pure water is growing at an unprecedented rate. Whether it is the precision preparation of the pharmaceutical industry, the chip cleaning of the electronics industry, or the pursuit of safe drinking water in daily life, pure water resources are indispensable. However, traditional pure water production processes are often accompanied by problems of high energy consumption and resource waste, which not only limits the sustainable development of pure water production, but also increases the operating costs of enterprises.

[0003] Therefore, developing a control method and system for energy-saving pure water production is of great significance for improving water resource utilization efficiency, reducing energy consumption, and promoting green production. Summary of the invention

[0004] In view of this, the present invention proposes a control method and system for energy-saving pure water production, aiming to achieve energy conservation and efficient utilization of resources in the pure water production process by optimizing the production process and intelligent control technology.

[0005] The present invention proposes a control method for energy-saving pure water production, comprising:

[0006] The actual parameters of the water source are detected, and the pretreatment parameters are determined according to the actual parameters of the water source to obtain pretreated water; the pretreatment includes adding flocculants, sedimentation, filtration, adding disinfectants and softening;

[0007] Producing ultrapure water by distillation based on the pretreated water material to obtain ultrapure water;

[0008] The ultrapure water is subjected to a quality inspection, and a determination is made as to whether post-processing is to be performed based on the quality inspection result; if the determination result is that post-processing is to be performed, a post-processing type and post-processing parameters are obtained based on the quality inspection result.

[0009] Preferably, the actual parameters of the water source include water volume, turbidity, particle diameter, particle density and water hardness.

[0010] Preferably, when adding the flocculant, the dosage of the flocculant is calculated by the following formula:

[0011] C = (k·T+Ct)·V;

[0012] Among them, C represents the dosage of flocculant, k is the proportional coefficient between water source and flocculant, T represents the turbidity of water source, Ct represents the basic dosage, and V represents the water volume.

[0013] Preferably, during precipitation, the precipitation time is calculated by the following formula:

[0014]

[0015] Where t represents the sedimentation time, d represents the particle diameter, ρs represents the particle density, pf represents the fluid density, μ represents the fluid viscosity, and g represents the gravitational acceleration.

[0016] Preferably, during filtration, the filtration flow rate is calculated by the following formula:

[0017]

[0018] Among them, Q is the flow rate, the unit is liters / minute; K is the flow characteristic coefficient of the filter; A is the filtration area; ΔP is the pressure difference on both sides of the filter; μ is the viscosity of the fluid.

[0019] Preferably, when adding the disinfectant, the dosage of the disinfectant is calculated by the following formula:

[0020]

[0021] Among them, D represents the dosage of disinfectant; L represents the basic concentration of disinfectant; V represents the water volume; DOi represents the initial dissolved oxygen content; DOf represents the dissolved oxygen content after unit time; P represents the number of microorganisms; and I represents the correction factor.

[0022] Preferably, during softening, the amount of softener is calculated by the following formula:

[0023]

[0024] Among them, Z represents the amount of softener used; H represents the water hardness; V represents the water volume; M represents the molar mass of the softener; and J represents the correction factor.

[0025] Preferably, the ultrapure water is subjected to quality testing, and judging whether to perform post-processing according to the quality testing result includes:

[0026] The ultrapure water is tested to obtain main parameters, which include conductivity, suspended solids concentration, pH value, total dissolved solids and microbial content; when the conductivity is not greater than a preset conductivity threshold, the total dissolved solids are not greater than a preset total dissolved solids threshold, the suspended solids concentration is not greater than a preset suspended solids concentration threshold, the pH value is within a preset pH range, and the microbial content is not greater than a preset microbial content threshold, the judgment result is that no post-processing is performed;

[0027] Otherwise, the judgment result is to perform post-processing.

[0028] Preferably, if the judgment result is to perform post-processing, obtaining the post-processing type and post-processing parameters according to the quality inspection result includes:

[0029] When the conductivity is greater than a preset conductivity threshold or the total dissolved solids are greater than a preset total dissolved solids threshold, reverse osmosis treatment is performed, otherwise the reverse osmosis treatment is skipped;

[0030] When the suspended matter concentration is greater than the preset suspended matter concentration threshold, filtering is performed, otherwise filtering is skipped;

[0031] When the pH value is not within the preset pH range, pH adjustment is performed, otherwise pH adjustment is skipped;

[0032] When the microbial content is greater than the preset microbial content threshold, sterilization is performed, otherwise the sterilization is skipped.

[0033] The present invention also proposes a control system for energy-saving pure water production, and the control system is used to implement the above-mentioned control method for energy-saving pure water production.

[0034] Compared with the prior art, the present invention has the following beneficial effects:

[0035] By integrating intelligent control and optimization algorithms, the present invention not only significantly improves the energy utilization efficiency in the pure water production process, but also ensures the stability and high standards of water quality. Specifically, the control method and system can analyze the water source characteristics in real time and accurately adjust various parameters in the pretreatment step, such as flocculant dosage, sedimentation time, filtration flow rate, etc., so as to effectively remove impurities in the raw water and lay a solid foundation for the subsequent ultrapure water production.

[0036] In the ultrapure water production stage, the present invention can minimize energy consumption while ensuring the purity of ultrapure water by utilizing efficient distillation technology. In addition, by performing multi-dimensional, high-precision quality testing on ultrapure water, the control system of the present invention can quickly identify water quality problems and intelligently select post-processing solutions based on the test results. This process not only improves processing efficiency, but also avoids unnecessary energy waste, further highlighting the energy-saving advantages of the present invention.

[0037] It is worth mentioning that the control method of the present invention is also highly flexible and scalable. It can be customized according to different production requirements and water source conditions to adapt to various complex production environments. At the same time, with the continuous advancement of technology and continuous optimization of production processes, the control system of the present invention can also continuously introduce new optimization algorithms and control strategies through software upgrades, etc., to further improve the energy efficiency and quality of pure water production.

[0038] In summary, the energy-saving pure water production control method and system proposed in the present invention, with its precise control, efficient energy utilization and stable water quality guarantee, has brought revolutionary changes to the pure water production industry. It can not only meet the growing demand for water quality, but also help promote the entire industry to develop in a more green and sustainable direction. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present invention. Moreover, the same reference symbols are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0040] Figure 1 Flow chart of the control method for energy-saving pure water production. DETAILED DESCRIPTION

[0041] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided in order to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art. It should be noted that, in the absence of conflict, the embodiments of the present invention and the features described in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0042] See also Figure 1 This embodiment proposes a control method for energy-saving pure water production, including:

[0043] The actual parameters of the water source are detected, and the pretreatment parameters are determined according to the actual parameters of the water source to obtain pretreated water; the pretreatment includes adding flocculants, sedimentation, filtration, adding disinfectants and softening;

[0044] Producing ultrapure water by distillation based on the pretreated water material to obtain ultrapure water;

[0045] The ultrapure water is subjected to a quality inspection, and a determination is made as to whether post-processing is to be performed based on the quality inspection result; if the determination result is that post-processing is to be performed, a post-processing type and post-processing parameters are obtained based on the quality inspection result.

[0046] It is understandable that traditional pure water production methods are often accompanied by problems such as high energy consumption and serious environmental pollution. In order to meet these challenges, this embodiment proposes an efficient and energy-saving pure water production control method, which not only optimizes the production process, but also significantly reduces energy consumption and emissions, providing strong support for achieving sustainable development.

[0047] First of all, this method starts from the source and conducts a comprehensive and detailed analysis of the detected water source. Through high-precision water quality testing equipment, we can obtain the actual parameters of the water source, such as turbidity, hardness, pH value, microbial content, etc. These parameters are an important basis for the design of subsequent treatment processes. Based on these parameters, we use intelligent algorithms to accurately calculate the various parameters required for pretreatment, ensuring that the pretreatment process can effectively remove impurities and retain the natural components of water to the maximum extent.

[0048] The pretreatment stage is a key link in the entire pure water production process. We use a series of advanced physical and chemical methods, including accurately adding an appropriate amount of flocculants to quickly condense the suspended matter in the water into larger particles for subsequent precipitation; separating the condensed particles from the water through efficient sedimentation tanks; and further removing tiny impurities and particles in the water through fine filtration devices; at the same time, in order to kill bacteria and viruses in the water, we will also add an appropriate amount of disinfectant; finally, through softening treatment, the hardness of the water is reduced to create favorable conditions for subsequent ultrapure water production.

[0049] On the basis of pretreatment, we use advanced distillation technology to produce ultrapure water. Distillation is a method of separation using the difference in boiling points of different substances. It can effectively remove impurities such as soluble solids and organic matter in water to obtain high-purity water. Our distillation equipment uses efficient heat exchangers and condensers, which can significantly improve distillation efficiency and reduce energy consumption.

[0050] The ultrapure water produced needs to undergo strict quality testing. We use a variety of advanced testing methods, such as conductivity meters, ion chromatographs, and ultraviolet spectrophotometers, to comprehensively test the various indicators of ultrapure water. The test results will serve as an important basis for judging whether post-processing is needed. If the test results show that certain indicators of ultrapure water do not meet the standard requirements, we will determine the post-processing type and post-processing parameters based on the specific situation. The post-processing process may include processes such as re-distillation, ion exchange, and reverse osmosis to ensure the quality and stability of the final product.

[0051] It is worth mentioning that the energy-saving pure water production control method in this embodiment not only focuses on production efficiency and product quality, but also fully considers the needs of environmental protection and energy saving. By optimizing the production process and adopting efficient and energy-saving equipment and technical means, we have achieved efficient utilization of resources and reduced waste emissions. This not only helps to reduce production costs and improve corporate competitiveness, but also helps to promote the sustainable development of social economy.

[0052] In summary, the energy-saving pure water production control method proposed in this embodiment is an efficient, environmentally friendly and sustainable production method. It ensures the high efficiency of pure water production and the stability of product quality by means of precise control of pretreatment parameters, strict quality inspection and flexible post-treatment measures. At the same time, the method also fully considers the needs of environmental protection and energy conservation, and makes positive contributions to the realization of green production and sustainable development of social economy.

[0053] In some embodiments of the present application, the actual parameters of the water source include water volume, turbidity, particle diameter, particle density and water hardness.

[0054] In some embodiments of the present application, when adding flocculant, the dosage of flocculant is calculated by the following formula:

[0055] C = (k·T+Ct)·V;

[0056] Among them, C represents the dosage of flocculant, k is the proportional coefficient between water source and flocculant, T represents the turbidity of water source, Ct represents the basic dosage, and V represents the water volume.

[0057] It is understandable that when we deeply explore the flocculant dosing technology in water treatment process, we need to carefully analyze the scientific principles and practical application strategies behind it. In the carefully designed embodiments of this application, the accurate calculation of the flocculant dosage is undoubtedly an important optimization of water treatment efficiency and cost control. The following will comprehensively analyze this key step through detailed explanation, rich examples and authoritative data support.

[0058] First of all, C in the core formula represents the dosage of flocculant, which directly determines the coagulation effect of suspended matter, colloids and other impurities in the water treatment process. As the correlation coefficient between the water source and the flocculant, k is not fixed, but is dynamically adjusted according to the properties of the water source (such as hardness, pH value, temperature, etc.) and the type and characteristics of the selected flocculant. Through the accumulation and analysis of a large amount of experimental data, we can build a complete k value database to provide a scientific basis for flocculant addition under different conditions. T, that is, the turbidity of the water source, is an important indicator for measuring the clarity of water quality. In actual operation, we often use precision instruments such as turbidity meters to monitor the raw water in real time to ensure the accuracy of the data. It is worth noting that the change of turbidity is often affected by many factors such as season, weather, and environmental changes in the water source. Therefore, continuous attention to and dynamic adjustment of the T value is the key to ensuring the stability of the flocculation effect. Ct, the basic dosage, is a benchmark value based on long-term practical experience and theoretical research. It takes into account factors such as the dissolution rate of the flocculant in water, its diffusion capacity, and the efficiency of binding with suspended matter. In practical applications, we will make appropriate fine-tuning based on Ct according to the specific water quality conditions to achieve the best treatment effect. V, water volume, is another important parameter for calculating the amount of flocculant added. In large water treatment plants, accurate measurement of water volume is of great significance for controlling production costs and optimizing treatment processes. By adopting advanced flow metering technology, we can achieve accurate monitoring of water volume, thereby ensuring the accuracy of flocculant dosage.

[0059] Furthermore, in order to verify the validity and reliability of the above calculation formula, we conducted a large number of empirical studies. In the experiment, we selected water samples from different sources and different turbidities, and used various types of flocculants for treatment. By comparing the treatment effects (such as suspended matter removal rate, effluent turbidity, etc.) under different dosages, we found that when the dosage is performed according to the calculation formula of this embodiment, the best flocculation effect and cost-effectiveness ratio can be achieved.

[0060] In some embodiments of the present application, during precipitation, the precipitation time is calculated by the following formula:

[0061]

[0062] Where t represents the sedimentation time, d represents the particle diameter, ρs represents the particle density, pf represents the fluid density, μ represents the fluid viscosity, and g represents the gravitational acceleration.

[0063] It is understandable that this embodiment is not just a simple application of mathematical formulas, but a comprehensive embodiment of knowledge from multiple fields such as physical principles, chemical kinetics, and material science. Below, we will elaborate on the calculation method of precipitation time from multiple dimensions.

[0064] The precipitation time is a crucial parameter, which is directly related to the purity, particle size distribution and even the final performance of the product. According to a specific embodiment of the present application, the precipitation time is determined according to the above calculation formula:

[0065] Among them, t represents the sedimentation time, which is the core target of the solution; d is the particle diameter, which reflects the physical size characteristics of the sediment; ρs and ρf represent the particle density and fluid density respectively, and the difference between the two drives the occurrence of the sedimentation process; μ is the fluid viscosity, which is a key factor affecting the flow properties of the fluid; and g is the well-known gravitational acceleration, which provides an indispensable driving force for the entire sedimentation process.

[0066] In some embodiments of the present application, during filtering, the filtration flow rate is calculated by the following formula:

[0067]

[0068] Among them, Q is the flow rate, the unit is liters / minute; K is the flow characteristic coefficient of the filter; A is the filtration area; ΔP is the pressure difference on both sides of the filter; μ is the viscosity of the fluid.

[0069] It is understandable that the accurate calculation of the filtration flow rate in this embodiment is not only related to the efficiency and performance of the equipment, but also directly affects the stability and reliability of the entire filtration system.

[0070] First, clarify the various parameters and their meanings in the calculation formula. Q is the flow rate, and its unit is set to liters per minute. The choice of this unit is convenient for calculation and monitoring and adjustment in practical applications. K is the flow characteristic coefficient of the filter, which is a crucial parameter. It reflects the comprehensive influence of the filter material, structure and process level on the fluid flow performance. Different filters often have very different K values. Therefore, when selecting a filter, it is particularly important to accurately measure and evaluate the K value. A represents the filter area, which is one of the key factors that determine the filtration efficiency and speed. Generally speaking, the larger the filter area, the more fluid can be processed per unit time, but it also brings problems such as increased cost and large space occupation. Therefore, in practical applications, it is necessary to reasonably determine the size of the filter area according to specific needs and conditions. ΔP is the pressure difference on both sides of the filter, which is an important power source for driving the fluid through the filter. As the filtration process proceeds, due to the accumulation of impurities inside the filter, ΔP will gradually increase, thereby affecting the filtration flow. Therefore, real-time monitoring and regulation of ΔP is one of the important means to ensure the stable operation of the filtration system. μ is the fluid viscosity, and the influence of this parameter on the filtration flow cannot be ignored. The change of fluid viscosity will directly affect the flow state and resistance of the fluid in the filter, and then affect the filtration efficiency and flow rate. In practical applications, it is necessary to select appropriate filters and filtration processes according to the specific properties and working conditions of the fluid to cope with the change of fluid viscosity.

[0071] In order to more intuitively illustrate the application and significance of the above calculation formula, we can give a specific example. Suppose that in a chemical production process, a specific type of filter is needed to filter a certain viscous fluid. According to experimental measurements and empirical data, we know that the K value of the filter is 0.8, the filtration area is 1 square meter, and the initial ΔP is 0.1MPa. At the same time, by consulting relevant materials and manuals, we know that the viscosity μ of the fluid is 0.01Pas. Substituting these parameters into the above calculation formula, we can get the filtration flow Q of the filter under initial conditions is about 800 liters / minute.

[0072] However, it is worth noting that as the filtration process progresses, ΔP will gradually increase, while the filtration flow rate Q will decrease accordingly. In order to maintain the stable operation and efficient processing capacity of the filtration system, the filter needs to be cleaned and maintained regularly to remove the accumulated impurities and restore ΔP to the initial level.

[0073] In summary, the filtration flow calculation formula proposed in this application not only provides an important theoretical basis and reference standard for the design and optimization of the filtration system, but also provides powerful guidance and support for the operation and maintenance work in actual production.

[0074] In some embodiments of the present application, when adding disinfectant, the dosage of disinfectant is calculated by the following formula:

[0075]

[0076] Among them, D represents the dosage of disinfectant; L represents the basic concentration of disinfectant; V represents the water volume; DOi represents the initial dissolved oxygen content; DOf represents the dissolved oxygen content after unit time; P represents the number of microorganisms; and I represents the correction factor.

[0077] It can be understood that this embodiment discloses how to ensure water quality safety and optimize disinfection effect by combining parameters and formulas.

[0078] First, the logic and meaning behind the calculation formula include: D, as the core indicator of disinfectant dosage, is directly related to the effectiveness of disinfection and the cost-effectiveness of subsequent treatment. Its determination depends on multiple variables, each of which carries a specific physical or biological meaning. L, the basic concentration of the disinfectant, is the basic starting point of this calculation. It represents the concentration of the disinfectant in its original state and is an important reference for the subsequent calculation of the dosage. It is worth noting that different disinfectants have different basic concentrations due to their differences in chemical properties and bactericidal mechanisms. Therefore, when selecting a disinfectant, it is necessary to fully consider the matching degree between its basic concentration and the target water quality. V, the water volume, is the direct basis for calculating the dosage. In actual operation, accurate measurement of water volume is crucial, which directly affects the dosage ratio of the disinfectant. Especially when treating large-scale water bodies, even a small volume error may lead to a significant deviation in the dosage of the disinfectant, thereby affecting the disinfection effect. Next, the pair of parameters DOi and DOf, namely the initial dissolved oxygen content and the dissolved oxygen content after unit time, reveal the dynamic changes of water quality during the disinfection process. Dissolved oxygen is an important indicator of biological activity in water bodies, and changes in its content can indirectly reflect the impact of the disinfection process on the microbial community. By comparing the amount of dissolved oxygen before and after disinfection, we can preliminarily evaluate the efficacy of the disinfectant and its impact on water quality. The number of microorganisms, P, is one of the key indicators for evaluating water quality safety. In the water treatment process, the removal and inactivation of microorganisms are the main goals of the disinfection link. Therefore, the accurate determination of the number of microorganisms is of great significance for determining the dosage of the disinfectant. By real-time monitoring of the changes in the number of microorganisms, the dosing strategy of the disinfectant can be dynamically adjusted to ensure that the disinfection effect is optimal. Finally, I, as a correction factor, adds flexibility and adaptability to this calculation formula. In practical applications, the efficacy of the disinfectant may change due to the influence of various factors such as water quality, water temperature, and pH value. Therefore, the introduction of a correction factor can fine-tune the calculation results to more accurately reflect the actual situation. This flexible design enables the calculation formula to maintain high accuracy and reliability in different application scenarios.

[0079] In some embodiments of the present application, during softening, the amount of softener is calculated by the following formula:

[0080]

[0081] Among them, Z represents the amount of softener used; H represents the water hardness; V represents the water volume; M represents the molar mass of the softener; and J represents the correction factor.

[0082] It is understandable that in this embodiment, Z is a direct reflection of the amount of softener used, and its accurate calculation is directly related to the quality of the softening effect and the control of economic costs. H Water hardness is an important parameter for measuring the content of minerals such as calcium and magnesium ions in water. The hardness of water sources in different regions is often very different. High-hardness water not only affects the drinking taste, but also easily scales in pipes, affecting equipment performance. Therefore, accurately measuring water hardness is the primary step in determining the amount of softener used. Through professional water quality analysis instruments, we can quickly and accurately obtain water hardness data in volume, providing a reliable and direct basis for subsequent volume calculations. V Accurate measurement of water volume V is also crucial for the calculation of softener dosage. It is directly related to the total amount of softener required in the softening process. In actual operation, the measurement of water volume should ensure accuracy to avoid any minor errors from significantly affecting the final calculation results. Considering that the water volume may fluctuate slightly due to changes in external conditions such as ambient temperature and pressure, these variables should be controlled as much as possible during the measurement process to ensure the stability and reliability of the measurement results. As for M, that is, the molar mass of the softener, it is an inherent physical property of the softener itself, which can usually be obtained by consulting relevant chemical manuals or databases. Different softeners have different molar masses. Therefore, when selecting a softener, in addition to considering its softening effect and economic cost, it is also necessary to pay attention to the influence of its molar mass on the dosage calculation. Finally, J is introduced as a correction factor to further improve the accuracy of the softener dosage calculation. The correction factor is usually derived based on a large amount of experimental data and empirical formulas, and is used to consider some factors that may be encountered in practical applications but are difficult to predict directly through theoretical calculations. For example, other impurity components in water quality, the dissolution rate of the softener, differences in equipment performance, etc. may all be reflected in the softener dosage calculation in the form of correction factors.

[0083] In summary, the calculation of softener dosage is a complex process that integrates multiple parameters and factors. By accurately determining water hardness, accurately measuring water volume, querying the molar mass of the softener, and rationally applying correction factors, we can obtain a softener dosage that meets actual needs and is economically reasonable. This not only helps to ensure the softening effect, but also effectively controls economic costs and achieves optimal utilization of resources.

[0084] In some embodiments of the present application, the ultrapure water is subjected to quality testing, and whether to perform post-processing is determined according to the quality testing result, including:

[0085] The ultrapure water is tested to obtain main parameters, which include conductivity, suspended solids concentration, pH value, total dissolved solids and microbial content; when the conductivity is not greater than a preset conductivity threshold, the total dissolved solids are not greater than a preset total dissolved solids threshold, the suspended solids concentration is not greater than a preset suspended solids concentration threshold, the pH value is within a preset pH range, and the microbial content is not greater than a preset microbial content threshold, the judgment result is that no post-processing is performed;

[0086] Otherwise, the judgment result is to perform post-processing.

[0087] It is understandable that ultrapure water, as an indispensable raw material in many high-tech fields such as laboratories, pharmaceuticals, and semiconductor manufacturing, has extremely high purity requirements. Any tiny impurities may have an immeasurable impact on the production process and product quality. Therefore, accurate and comprehensive quality testing of ultrapure water is a key link to ensure the smooth progress of subsequent processes and product quality.

[0088] In this process, this embodiment measures the parameters of ultrapure water in multiple dimensions based on scientific and rigorous testing standards. Specifically, these main parameters cover five aspects: conductivity, suspended solids concentration, pH value, total dissolved solids, and microbial content. Each indicator is directly related to the purity and applicability of ultrapure water, so their accurate measurement and evaluation are particularly important.

[0089] Conductivity is a direct indicator of the ion content in water. The lower the value, the less ionic impurities there are in the water and the purer the water quality. In the embodiments of the present application, we set a preset conductivity threshold. When the measured conductivity of ultrapure water is not greater than the threshold, it is considered to have met the qualified standard in this regard. According to research data from authoritative institutions, for most high-tech applications, the conductivity of ultrapure water needs to be controlled at an extremely low level to ensure the accuracy of the process and the stability of the product.

[0090] The suspended matter concentration reflects the content of insoluble particles in the water. These particles may come from various links such as air, pipes, and equipment. If they are not controlled, they will pose a serious threat to product quality. Therefore, we also set a preset suspended matter concentration threshold as another important basis for judging whether the water quality is qualified.

[0091] pH is a key indicator for measuring the acidity and alkalinity of aqueous solutions. For ultrapure water, it is crucial to keep its pH value within a predetermined range, because fluctuations in pH may affect the rate and direction of subsequent chemical reactions, thereby affecting product quality. In this embodiment, we clearly define a preset pH range to ensure that the pH of ultrapure water meets the process requirements.

[0092] Total dissolved solids (TDS) refers to the total amount of various inorganic salts and organic matter dissolved in water. Too high TDS values ​​will not only increase the difficulty of subsequent treatment, but may also cause corrosion or blockage of production equipment. Therefore, we also set a preset total dissolved solids threshold to strictly control the dissolved matter content in ultrapure water.

[0093] Microbial content is an important indicator for measuring the biological safety of water quality. Although ultrapure water has been strictly treated and disinfected during the preparation process, it may still be contaminated by the external environment. Therefore, monitoring and control of microbial content is also indispensable. We set preset microbial content thresholds based on industry standards and actual application requirements to ensure the biological safety of ultrapure water.

[0094] Based on comprehensive consideration of the above five parameters, we have developed a clear post-processing decision-making mechanism: when ultrapure water meets all preset threshold requirements at the same time, the judgment result is that no post-processing is required; otherwise, corresponding post-processing measures are required to further improve the purity and stability of water quality. This decision-making mechanism reflects the strict control of product quality.

[0095] In some embodiments of the present application, if the judgment result is to perform post-processing, obtaining the post-processing type and post-processing parameters according to the quality detection result includes:

[0096] When the conductivity is greater than a preset conductivity threshold or the total dissolved solids are greater than a preset total dissolved solids threshold, reverse osmosis treatment is performed, otherwise the reverse osmosis treatment is skipped;

[0097] When the suspended matter concentration is greater than the preset suspended matter concentration threshold, filtering is performed, otherwise filtering is skipped;

[0098] When the pH value is not within the preset pH range, pH adjustment is performed, otherwise pH adjustment is skipped;

[0099] When the microbial content is greater than the preset microbial content threshold, sterilization is performed, otherwise the sterilization is skipped.

[0100] It is understandable that in this embodiment, when the system detects that the conductivity of the water sample exceeds the preset conductivity threshold, or the total dissolved solids (TDS) concentration is higher than the set threshold, this often means that there are too many impurities such as dissolved minerals and salts in the water body, which may affect the safety and applicability of the water quality. At this time, the system will automatically start the reverse osmosis treatment process. Reverse osmosis technology, as an efficient means of water purification, can effectively remove most of the dissolved solids, organic matter, bacteria and viruses in the water through the selective permeation of a semipermeable membrane, thereby significantly improving the water quality. According to relevant studies, the conductivity and TDS values ​​of water treated with reverse osmosis technology can be significantly reduced to meet national drinking water standards or higher standards.

[0101] On the other hand, if the suspended matter concentration of the water sample exceeds the preset threshold, it means that the water may contain more impurities such as sediment and particles, which not only affect the clarity of the water, but may also cause inconvenience to subsequent use. Therefore, in this case, the system will perform filtration. Filtration usually uses physical methods such as sand filtration and carbon filtration to intercept suspended matter in the water on the filter medium, thereby achieving the purpose of purifying the water quality. Practice has proved that the suspended matter concentration of water that has been effectively filtered can be greatly reduced, the water quality is clear and transparent, and it is more suitable for various purposes.

[0102] Furthermore, when the pH value of the water sample deviates from the predetermined range, it may have an adverse effect on the water quality, such as affecting the stability and corrosiveness of the water. Therefore, the system will automatically determine whether pH adjustment is required based on the real-time detected pH value. pH adjustment is usually achieved by adding acid-base neutralizers to restore the pH value of the water sample to the predetermined range. This process not only helps protect water treatment equipment from corrosion, but also ensures the stability and safety of water quality.

[0103] Finally, the system also takes proactive measures to deal with the problem of excessive microbial content. When the microbial content in the water sample is detected to exceed the preset threshold, the system will immediately start the sterilization process. There are many methods of sterilization, including ultraviolet sterilization, ozone sterilization, chemical sterilization, etc. These methods have their own advantages and disadvantages, but they can effectively kill bacteria, viruses and other microorganisms in the water to ensure the hygiene and safety of the water quality. It is worth noting that with the continuous advancement of technology, more and more efficient and environmentally friendly sterilization technologies are being applied to the field of water treatment, providing a more solid guarantee for water quality safety.

[0104] In summary, the post-processing process in this embodiment is a highly intelligent and refined process, which automatically selects and executes corresponding post-processing measures according to the real-time detection results of water quality to ensure that the treated water quality reaches the optimal state. This process not only reflects the progress of modern science and technology and the improvement of intelligence level, but also provides people with safer and more reliable water resources.

[0105] The present invention also proposes a control system for energy-saving pure water production, and the control system is used to implement the above-mentioned control method for energy-saving pure water production.

[0106] Those skilled in the art will appreciate that the embodiments of the present application may be provided as methods, systems or computer program products. Therefore, the present application may adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment in combination with software and hardware. Moreover, the present application may adopt the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program codes.

[0107] The present application is described with reference to flowcharts and / or block diagrams of methods, devices (systems) and computer program products according to embodiments of the present application. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor or other programmable data processing device to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0108] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0109] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0110] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, ordinary technicians in the relevant field should understand that the specific implementation methods of the present invention can still be modified or replaced by equivalents. Any modification or equivalent replacement that does not depart from the spirit and scope of the present invention should be covered within the scope of protection of the claims of the present invention.

Claims

1. A control method for energy-saving pure water production, characterized in that: include: The actual parameters of the water source are detected, and the pretreatment parameters are determined according to the actual parameters of the water source to obtain pretreated water material; The pretreatment includes adding flocculants, settling, filtering, adding disinfectants and softening; Producing ultrapure water by distillation based on the pretreated water material to obtain ultrapure water; The ultrapure water is subjected to a quality inspection, and a determination is made as to whether post-processing is to be performed based on the quality inspection result; if the determination result is that post-processing is to be performed, a post-processing type and post-processing parameters are obtained based on the quality inspection result.

2. The energy-saving pure water production control method according to claim 1, characterized in that: Actual parameters of the water source include water volume, turbidity, particle diameter, particle density and water hardness.

3. The control method for energy-saving pure water production according to claim 2, characterized in that: When adding flocculants, the dosage of flocculants is calculated by the following formula: C = (k·T+Ct)·V; Among them, C represents the dosage of flocculant, k is the proportional coefficient between water source and flocculant, T represents the turbidity of water source, Ct represents the basic dosage, and V represents the water volume.

4. The control method for energy-saving pure water production according to claim 2, characterized in that: During precipitation, the precipitation time is calculated by the following formula: Where t represents the sedimentation time, d represents the particle diameter, ρs represents the particle density, pf represents the fluid density, μ represents the fluid viscosity, and g represents the gravitational acceleration.

5. The control method for energy-saving pure water production according to claim 2, characterized in that: During filtering, the filtering flow is calculated using the following formula: Among them, Q is the flow rate, the unit is liters / minute; K is the flow characteristic coefficient of the filter; A is the filtration area; ΔP is the pressure difference on both sides of the filter; μ is the viscosity of the fluid.

6. The control method for energy-saving pure water production according to claim 2, characterized in that: When adding disinfectant, the dosage of disinfectant is calculated by the following formula: Among them, D represents the dosage of disinfectant; L represents the basic concentration of disinfectant; V represents the water volume; DOi represents the initial dissolved oxygen content; DOf represents the dissolved oxygen content after unit time; P represents the number of microorganisms; and I represents the correction factor.

7. The control method for energy-saving pure water production according to claim 2, characterized in that: During softening, the amount of softener is calculated using the following formula: Among them, Z represents the amount of softener used; H represents the water hardness; V represents the water volume; M represents the molar mass of the softener; and J represents the correction factor.

8. The energy-saving pure water production control method according to claim 1, characterized in that: The ultrapure water is subjected to quality testing, and whether to perform post-processing is determined according to the quality testing result, including: The ultrapure water is tested to obtain main parameters, which include conductivity, suspended solids concentration, pH value, total dissolved solids and microbial content; when the conductivity is not greater than a preset conductivity threshold, the total dissolved solids are not greater than a preset total dissolved solids threshold, the suspended solids concentration is not greater than a preset suspended solids concentration threshold, the pH value is within a preset pH range, and the microbial content is not greater than a preset microbial content threshold, the judgment result is that no post-processing is performed; Otherwise, the judgment result is to perform post-processing.

9. The energy-saving pure water production control method according to claim 1, characterized in that: If the judgment result is to perform post-processing, the post-processing type and post-processing parameters are obtained according to the quality inspection results, including: When the conductivity is greater than a preset conductivity threshold or the total dissolved solids are greater than a preset total dissolved solids threshold, reverse osmosis treatment is performed, otherwise the reverse osmosis treatment is skipped; When the suspended matter concentration is greater than the preset suspended matter concentration threshold, filtering is performed, otherwise filtering is skipped; When the pH value is not within the preset pH range, pH adjustment is performed, otherwise pH adjustment is skipped; When the microbial content is greater than the preset microbial content threshold, sterilization is performed, otherwise the sterilization is skipped.

10. A control system for energy-saving pure water production, characterized in that: The control system is used to implement the control method for energy-saving pure water production described in any one of claims 1-9.

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