A method and system for purifying tap water

Abstract

The application discloses a tap water purification method and system, relates to the technical field of power plant equipment cooling, and comprises the following steps: obtaining multiple first purification strategies, second purification strategies and third purification strategies according to process parameters of an operation process in historical records, power plant equipment operation parameters and power plant equipment pollution discharge parameters; determining the first purification strategy based on the type, operation parameters and first process parameter table of the to-be-cooled power plant equipment, and purifying tap water according to the first purification strategy; after the to-be-cooled power plant equipment produces sewage, the first purification strategy is converted into the second purification strategy when the first condition is met and according to sewage parameters; and the second purification strategy is converted into the third purification strategy when the second condition is met and according to the power plant equipment operation parameters and the power plant equipment pollution discharge parameters. The operation parameters and the pollution discharge parameters are jointly considered, the purification strategy items are classified, the adaptability of purification is ensured, and the service life and sustainable use of the power plant equipment are improved.

Description

Technical Field

[0001] This application relates to the field of power plant cooling technology, and more specifically, to a method and system for purifying tap water. Background Technology

[0002] The background technologies for power plant tap water purification mainly include sedimentation and flocculation, filtration, softening, disinfection, reverse osmosis, water quality monitoring, automated control, and chemical treatment. During power plant operation, many devices, especially power generation equipment, require cooling to maintain suitable operating temperatures. Cooling water comes into direct contact with this equipment, therefore its quality directly impacts equipment performance and lifespan. The integrated application of these technologies aims to remove suspended particles, organic matter, ions, and microorganisms from the water, ensuring that the water quality meets the requirements of the power plant equipment. Automated control systems monitor water quality parameters to automatically adjust water purification equipment, improving system stability. Chemical treatment, softening, and disinfection measures help prevent corrosion, scale buildup, and microbial contamination, extending equipment lifespan and improving power plant operating efficiency.

[0003] In the existing technology, different operating states of power plant equipment have different requirements for tap water quality, and fixed water purification strategies can no longer meet the requirements of power plant equipment operation performance and sewage discharge.

[0004] Therefore, how to improve the adaptability of water purification is a technical problem that needs to be solved. Summary of the Invention

[0005] This invention provides a method for purifying tap water, addressing the technical problem of low adaptability to water quality purification in existing technologies. This method is applied in power plants and includes:

[0006] Define each operational process involved in tap water purification, and define the process parameters for each operational process;

[0007] Establish a first process parameter table, a second process parameter table, and a third process parameter table based on the process parameters of the operating procedures, the operating parameters of the power plant equipment, and the sewage discharge parameters of the power plant equipment in the historical records;

[0008] Based on the first process parameter table, the second process parameter table, and the third process parameter table, several first purification strategies, second purification strategies, and third purification strategies are obtained.

[0009] Based on the type of power plant equipment to be cooled, operating parameters, and the first process parameter table, a first purification strategy is determined. The tap water is purified according to the first purification strategy, and the purified tap water is used to cool the power plant equipment to be cooled.

[0010] After the power plant equipment generates wastewater, the wastewater parameters at the time of wastewater generation are obtained. Once the first condition is met, the first purification strategy is converted into the second purification strategy based on the wastewater parameters.

[0011] Real-time monitoring of power plant equipment operating parameters and power plant equipment discharge parameters; once the second condition is met, the second purification strategy is converted into a third purification strategy based on the power plant equipment operating parameters and power plant equipment discharge parameters.

[0012] In some embodiments of this application, a first process parameter table, a second process parameter table, and a third process parameter table are established based on process parameters of the operating process, power plant equipment operating parameters, and power plant equipment discharge parameters from historical records, including:

[0013] Obtain the process parameters of the operating process, the operating parameters of the power plant equipment, and the cooling indexes corresponding to the operating parameters at the first time scale;

[0014] The process parameters of the operating procedure and the operating parameters of the power plant equipment are jointly subject to a standard cooling index. If the cooling index is lower than the standard cooling index, the process parameters of the operating procedure are adjusted based on the difference between the cooling index and the standard cooling index.

[0015] A first process parameter table is established based on the correspondence between the adjusted process parameters and the power plant equipment operating parameters.

[0016] In some embodiments of this application, a first process parameter table, a second process parameter table, and a third process parameter table are established based on process parameters of the operating process, power plant equipment operating parameters, and power plant equipment discharge parameters from historical records. The method further includes:

[0017] Obtain the process parameters of the operating process, the power plant equipment discharge parameters, and the corresponding discharge indicators for the discharge parameters at the second time scale;

[0018] The process parameters of the operating process and the power plant equipment discharge parameters together correspond to a standard discharge index. If the discharge index is lower than the standard discharge index, the process parameters of the operating process are adjusted based on the difference between the discharge index and the standard discharge index.

[0019] A second process parameter table is established based on the correspondence between the adjusted process parameters and the power plant equipment discharge parameters.

[0020] In some embodiments of this application, a first process parameter table, a second process parameter table, and a third process parameter table are established based on process parameters of the operating process, power plant equipment operating parameters, and power plant equipment discharge parameters from historical records. The method further includes:

[0021] Obtain the process parameters and power plant equipment operating parameters of the first time scale, and the power plant equipment discharge parameters and comprehensive indicators of the second time scale at the same time.

[0022] The comprehensive indicators are determined based on the sewage discharge indicators and cooling indicators;

[0023] The process parameters of the operating process, the operating parameters of the power plant equipment, and the discharge parameters of the power plant equipment all correspond to a standard comprehensive index. If the comprehensive index is lower than the standard comprehensive index, the process parameters of the operating process are adjusted based on the difference between the comprehensive index and the standard comprehensive index.

[0024] A third process parameter table is established based on the correspondence between the adjusted process parameters, power plant equipment operating parameters, and power plant equipment discharge parameters.

[0025] In some embodiments of this application, multiple first purification strategies, second purification strategies, and third purification strategies are obtained based on a first process parameter table, a second process parameter table, and a third process parameter table, including:

[0026] The size of the power plant equipment operating parameter range is determined based on the length of the cooling index range in the first process parameter table and the types of power plant equipment operating parameters.

[0027] Based on the size of the power plant equipment operating parameter range, all ranges of power plant equipment operating parameters are divided, thereby dividing the data in the first process parameter table. The process parameters of the operating process belonging to the same power plant equipment operating parameter range and the power plant equipment operating parameters are used as a first purification strategy.

[0028] The size of the power plant equipment discharge parameter range is determined based on the length of the discharge index range in the second process parameter table and the types of power plant equipment discharge parameters.

[0029] Based on the size of the power plant equipment discharge parameter range, all ranges of power plant equipment discharge parameters are divided, thereby dividing the data in the second process parameter table. The process parameters of the operating process belonging to the same power plant equipment discharge parameter range and the power plant equipment discharge parameters are used as a second purification strategy.

[0030] The correspondence between each process parameter, power plant equipment operating parameter, and power plant equipment discharge parameter in the third process parameter table is taken as a third purification strategy.

[0031] In some embodiments of this application, after a first condition is met, the first purification strategy is converted into a second purification strategy based on wastewater parameters, including:

[0032] If the discharge index is lower than the first threshold and the discharge index growth rate is less than the second threshold, then the first purification strategy will be converted to the second purification strategy based on the wastewater parameters.

[0033] In some embodiments of this application, if the first condition is not met, the method further includes:

[0034] Continue with the first purification strategy. When the second condition is met, switch from the first purification strategy to the third purification strategy.

[0035] In some embodiments of this application, after the second condition is met, the second purification strategy is converted into a third purification strategy based on the power plant equipment operating parameters and the power plant equipment discharge parameters, including:

[0036] If the comprehensive index is lower than the third threshold and the growth rate of the comprehensive index is less than the fourth threshold, then the second purification strategy will be converted into the third purification strategy based on the power plant equipment operating parameters and the power plant equipment discharge parameters.

[0037] In some embodiments of this application, if the second condition is not met, the method further includes:

[0038] Continue with the first or second purification strategy until the second condition is met, then switch to the third purification strategy.

[0039] Correspondingly, this application also provides a tap water purification system for use in power plants, the system comprising:

[0040] The first module is used to define each operation process involved in tap water purification and to define the process parameters of the operation process;

[0041] The second module is used to establish a first process parameter table, a second process parameter table, and a third process parameter table based on the process parameters of the operating process, the operating parameters of the power plant equipment, and the sewage discharge parameters of the power plant equipment in the historical records.

[0042] The third module is used to obtain multiple first purification strategies, second purification strategies and third purification strategies based on the first process parameter table, the second process parameter table and the third process parameter table.

[0043] The fourth module is used to determine the first purification strategy based on the type of power plant equipment to be cooled, operating parameters and the first process parameter table, and to purify the tap water according to the first purification strategy. The purified tap water is then used to cool the power plant equipment to be cooled.

[0044] The fifth module is used to obtain the wastewater parameters at the time of wastewater generation after the power plant equipment to be cooled generates wastewater, and after the first condition is met, convert the first purification strategy into the second purification strategy based on the wastewater parameters.

[0045] The sixth module is used to monitor the power plant equipment operating parameters and power plant equipment discharge parameters in real time. After the second condition is met, the second purification strategy is converted into the third purification strategy based on the power plant equipment operating parameters and power plant equipment discharge parameters.

[0046] By applying the above technical solutions, each operational process involved in tap water purification is defined, and the process parameters of each operational process are defined. Based on the process parameters of the operational processes in historical records, the operating parameters of the power plant equipment, and the wastewater discharge parameters of the power plant equipment, a first process parameter table, a second process parameter table, and a third process parameter table are established. Based on the first, second, and third process parameter tables, multiple first, second, and third purification strategies are obtained. Based on the type of power plant equipment to be cooled, its operating parameters, and the first process parameter table, a first purification strategy is determined. Tap water is purified according to the first purification strategy, and the purified tap water is used to cool the power plant equipment to be cooled. After the power plant equipment to be cooled generates wastewater, the wastewater parameters at the time of wastewater generation are obtained. If a first condition is met, the first purification strategy is converted to a second purification strategy based on the wastewater parameters. The operating parameters and wastewater discharge parameters of the power plant equipment are monitored in real time. If a second condition is met, the second purification strategy is converted to a third purification strategy based on the operating parameters and wastewater discharge parameters of the power plant equipment. This application selects different strategies by establishing process parameter tables for different situations. By taking both operating and wastewater discharge parameters into account, purification strategies are categorized accordingly, ensuring the adaptability of the purification process and extending the lifespan and sustainable use of power plant equipment. This ensures effective water purification to meet the complex application needs of power plant equipment under various conditions. Attached Figure Description

[0047] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0048] Figure 1 A schematic flowchart of a tap water purification method proposed in an embodiment of the present invention is shown;

[0049] Figure 2 A schematic diagram of a tap water purification system proposed in an embodiment of the present invention is shown. Detailed Implementation

[0050] 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. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0051] This application provides a tap water purification method applied in power plants. This solution is based on overall automated control, that is, the tap water purification system is directly connected to different devices and directly cooled in real time, so the tap water purification system can be controlled in real time.

[0052] like Figure 1 As shown, the method includes the following steps:

[0053] Step S101: Define each operating process involved in tap water purification and define the process parameters of the operating process.

[0054] In this embodiment, the tap water purification process includes the following steps:

[0055] Sedimentation: This involves adding chemical agents to settle suspended particulate matter in the water. These particles may include mud, sand, etc.

[0056] Filtration: Using filters to remove solid particles, suspended solids, and microorganisms from water. The choice of filter depends on the required level of purification.

[0057] Softening: If the water contains a large amount of hard water (rich in calcium and magnesium ions), water softening methods can be used, such as ion exchange or the addition of chelating agents.

[0058] Disinfection: Using disinfectants, such as chlorine or ozone, to kill bacteria and microorganisms in the water and prevent them from multiplying in the system.

[0059] Reverse osmosis: For some power plants with special requirements, reverse osmosis technology may be used to remove ions, microorganisms and organic matter from the water through semi-permeable membrane filtration.

[0060] Let's explain the controllable parameters one by one according to the purification steps described above:

[0061] precipitation:

[0062] Chemical dosage: The amount of coagulant or flocculant added can be adjusted to promote the sedimentation of suspended particles.

[0063] filter:

[0064] Filter pore size and material: Filters with different pore sizes and materials can be selected to accommodate particles of different sizes and types.

[0065] soften:

[0066] Softener dosage: Adjust the amount of softener (such as lime) added to the water to reduce the hardness of the water.

[0067] disinfect:

[0068] Disinfectant concentration: Control the concentration of disinfectants (such as chlorine) to ensure that it is sufficient to kill bacteria but not excessive and cause problems.

[0069] Contact time: Ensure sufficient contact time between water and disinfectant to improve disinfection effectiveness.

[0070] Reverse osmosis:

[0071] Reverse osmosis membrane selection: Select a reverse osmosis membrane suitable for the water quality to remove specific ions and microorganisms.

[0072] Reverse osmosis pressure: Adjusting the operating pressure of the reverse osmosis system affects the water permeability.

[0073] Step S102: Establish a first process parameter table, a second process parameter table, and a third process parameter table based on the process parameters of the operating process, the power plant equipment operating parameters, and the power plant equipment discharge parameters in the historical records.

[0074] In this embodiment, the first process parameter table, the second process parameter table, and the third process parameter table represent the reasonable process parameters under different operating parameters, the reasonable process parameters under different discharge parameters, and the reasonable process parameters that are common to both different operating parameters and discharge parameters, respectively.

[0075] In this embodiment, the power plant equipment operating parameters are as follows:

[0076] Voltage: The output voltage of power generation equipment, usually measured in kilovolts (kV).

[0077] Current: The output current of power generation equipment, usually measured in amperes (A).

[0078] Power: The output power of power generation equipment, usually measured in kilowatts (kW) or megawatts (MW).

[0079] Frequency: The frequency of the power system, usually 50Hz or 60Hz.

[0080] Temperature: The operating temperature of equipment, especially equipment involving heat exchange, such as boilers and coolers.

[0081] Pressure: The pressure at which equipment operates, such as the internal pressure of a boiler, steam pressure, etc.

[0082] Flow rate: The flow rate of cooling water, steam, gas, etc., is usually expressed in cubic meters per hour (m3 / h).

[0083] Power plant equipment discharge parameters:

[0084] Suspended particulate matter concentration: The concentration of suspended particulate matter in effluent, usually expressed in milligrams per liter (mg / L).

[0085] Chemical oxygen demand (COD): The total amount of organic matter in effluent, usually expressed in milligrams per liter (mg / L).

[0086] Biochemical oxygen demand (BOD): The amount of oxygen required by organisms from organic matter in effluent, usually expressed in milligrams per liter (mg / L).

[0087] Ammonia nitrogen: The concentration of ammonia and amino compounds in effluent, usually expressed in milligrams per liter (mg / L).

[0088] Total phosphorus and total nitrogen: The concentration of total phosphorus and total nitrogen in effluent, usually expressed in milligrams per liter (mg / L).

[0089] Microbial concentration: The concentration of microorganisms (bacteria, algae, etc.) in the discharged water, usually expressed as cell count or particle count.

[0090] pH value: the acidity or alkalinity of the discharged water.

[0091] Conductivity: The concentration of electrolytes in discharged water, usually expressed in microsiemens per centimeter (μS / cm).

[0092] It should be noted that the correspondences in the table do not represent multiple process parameters, various operating parameters, or multiple wastewater discharge parameters, but rather a single process parameter, operating parameter, and wastewater discharge parameter. That is, one process parameter corresponds to one operating parameter and one wastewater discharge parameter. This correspondence can be established by calculating the correlation between the data types with the highest correlation.

[0093] In some embodiments of this application, a first process parameter table, a second process parameter table, and a third process parameter table are established based on process parameters of the operating process, power plant equipment operating parameters, and power plant equipment discharge parameters from historical records, including:

[0094] Obtain the process parameters of the operating process, the operating parameters of the power plant equipment, and the cooling indexes corresponding to the operating parameters at the first time scale;

[0095] The process parameters of the operating procedure and the operating parameters of the power plant equipment are jointly subject to a standard cooling index. If the cooling index is lower than the standard cooling index, the process parameters of the operating procedure are adjusted based on the difference between the cooling index and the standard cooling index.

[0096] A first process parameter table is established based on the correspondence between the adjusted process parameters and the power plant equipment operating parameters.

[0097] In this embodiment, obtaining the process parameters of the operation process, the operating parameters of the power plant equipment, and the cooling index corresponding to the operating parameters at the first time scale means that the effect of the process parameters of the operation process will not be immediately reflected in the operating parameters of the equipment, but there is a certain time delay. Therefore, the process parameters and operating parameters at the first time scale refer to the process parameters and operating parameters with a first time interval. For example, the process parameters at time t1 correspond to the operating parameters of the equipment at time t2, and there is a first time interval between t1 and t2.

[0098] In this embodiment, the process parameters of the operating process are adjusted based on the difference between the cooling index and the standard cooling index. Different differences correspond to different adjustment coefficients, and corrections are made by multiplying the adjustment coefficients by the original process parameters. The following content follows the same principle.

[0099] In some embodiments of this application, a first process parameter table, a second process parameter table, and a third process parameter table are established based on process parameters of the operating process, power plant equipment operating parameters, and power plant equipment discharge parameters from historical records. The method further includes:

[0100] Obtain the process parameters of the operating process, the power plant equipment discharge parameters, and the corresponding discharge indicators for the discharge parameters at the second time scale;

[0101] The process parameters of the operating process and the power plant equipment discharge parameters together correspond to a standard discharge index. If the discharge index is lower than the standard discharge index, the process parameters of the operating process are adjusted based on the difference between the discharge index and the standard discharge index.

[0102] A second process parameter table is established based on the correspondence between the adjusted process parameters and the power plant equipment discharge parameters.

[0103] In some embodiments of this application, a first process parameter table, a second process parameter table, and a third process parameter table are established based on process parameters of the operating process, power plant equipment operating parameters, and power plant equipment discharge parameters from historical records. The method further includes:

[0104] Obtain the process parameters and power plant equipment operating parameters of the first time scale, and the power plant equipment discharge parameters and comprehensive indicators of the second time scale at the same time.

[0105] The comprehensive indicators are determined based on the sewage discharge indicators and cooling indicators;

[0106] The process parameters of the operating process, the operating parameters of the power plant equipment, and the discharge parameters of the power plant equipment all correspond to a standard comprehensive index. If the comprehensive index is lower than the standard comprehensive index, the process parameters of the operating process are adjusted based on the difference between the comprehensive index and the standard comprehensive index.

[0107] A third process parameter table is established based on the correspondence between the adjusted process parameters, power plant equipment operating parameters, and power plant equipment discharge parameters.

[0108] In this embodiment, a comprehensive index is determined based on the sewage discharge index and the cooling index, and different weights are assigned to the two to determine the comprehensive index.

[0109] In this embodiment, obtaining the process parameters and power plant equipment operating parameters of the first time scale, the power plant equipment discharge parameters and comprehensive indicators of the second time scale at the same time means that there is a first time interval between the process parameters and operating parameters, and a second time interval between the process parameters and discharge parameters, but all are at the same time scale.

[0110] Step S103: Based on the first process parameter table, the second process parameter table, and the third process parameter table, a number of first purification strategies, second purification strategies, and third purification strategies are obtained.

[0111] In this embodiment, the parameter range is divided according to the length of the indicator range, so that each range forms a single purification strategy.

[0112] In some embodiments of this application, multiple first purification strategies, second purification strategies, and third purification strategies are obtained based on a first process parameter table, a second process parameter table, and a third process parameter table, including:

[0113] The size of the power plant equipment operating parameter range is determined based on the length of the cooling index range in the first process parameter table and the types of power plant equipment operating parameters.

[0114] Based on the size of the power plant equipment operating parameter range, all ranges of power plant equipment operating parameters are divided, thereby dividing the data in the first process parameter table. The process parameters of the operating process belonging to the same power plant equipment operating parameter range and the power plant equipment operating parameters are used as a first purification strategy.

[0115] The size of the power plant equipment discharge parameter range is determined based on the length of the discharge index range in the second process parameter table and the types of power plant equipment discharge parameters.

[0116] Based on the size of the power plant equipment discharge parameter range, all ranges of power plant equipment discharge parameters are divided, thereby dividing the data in the second process parameter table. The process parameters of the operating process belonging to the same power plant equipment discharge parameter range and the power plant equipment discharge parameters are used as a second purification strategy.

[0117] The correspondence between each process parameter, power plant equipment operating parameter, and power plant equipment discharge parameter in the third process parameter table is taken as a third purification strategy.

[0118] In this embodiment, different cooling index range lengths and operating parameter types correspond to different power plant equipment operating parameter range sizes.

[0119] Step S104: Determine the first purification strategy based on the type of power plant equipment to be cooled, operating parameters, and the first process parameter table; purify the tap water according to the first purification strategy; and use the purified tap water to cool the power plant equipment to be cooled.

[0120] In this embodiment, before wastewater is generated, only the equipment operating parameters are considered, and the first purification strategy is selected accordingly.

[0121] In this embodiment, a first purification strategy is determined based on the type of power plant equipment to be cooled, its operating parameters, and a first process parameter table. The current operating parameters are then matched with the operating parameters in the first process parameter table to find the process parameter corresponding to the nearest operating parameter, thereby purifying the tap water. The second and third purification strategies are similar.

[0122] Step S105: After the wastewater generated by the cooling power plant equipment is obtained, the wastewater parameters at the time of wastewater generation are obtained. After the first condition is met, the first purification strategy is converted into the second purification strategy based on the wastewater parameters.

[0123] In this embodiment, after wastewater is generated, the effectiveness of the first purification strategy is determined. If it meets the requirements, the process continues; otherwise, the wastewater parameters are considered, and the first purification strategy is replaced with the second purification strategy.

[0124] In some embodiments of this application, after a first condition is met, the first purification strategy is converted into a second purification strategy based on wastewater parameters, including:

[0125] If the discharge index is lower than the first threshold and the discharge index growth rate is less than the second threshold, then the first purification strategy will be converted to the second purification strategy based on the wastewater parameters.

[0126] In some embodiments of this application, if the first condition is not met, the method further includes:

[0127] Continue with the first purification strategy. When the second condition is met, switch from the first purification strategy to the third purification strategy.

[0128] In this embodiment, if the wastewater quality exceeds the standard and the rate of improvement is slow, the process is switched to the second purification strategy.

[0129] Step S106: Monitor the power plant equipment operating parameters and power plant equipment discharge parameters in real time. After the second condition is met, convert the second purification strategy into the third purification strategy based on the power plant equipment operating parameters and power plant equipment discharge parameters.

[0130] In some embodiments of this application, after the second condition is met, the second purification strategy is converted into a third purification strategy based on the power plant equipment operating parameters and the power plant equipment discharge parameters, including:

[0131] If the comprehensive index is lower than the third threshold and the growth rate of the comprehensive index is less than the fourth threshold, then the second purification strategy will be converted into the third purification strategy based on the power plant equipment operating parameters and the power plant equipment discharge parameters.

[0132] In some embodiments of this application, if the second condition is not met, the method further includes:

[0133] Continue with the first or second purification strategy until the second condition is met, then switch to the third purification strategy.

[0134] By applying the above technical solutions, each operational process involved in tap water purification is defined, and the process parameters of each operational process are defined. Based on the process parameters of the operational processes in historical records, the operating parameters of the power plant equipment, and the wastewater discharge parameters of the power plant equipment, a first process parameter table, a second process parameter table, and a third process parameter table are established. Based on the first, second, and third process parameter tables, multiple first, second, and third purification strategies are obtained. Based on the type of power plant equipment to be cooled, its operating parameters, and the first process parameter table, a first purification strategy is determined. Tap water is purified according to the first purification strategy, and the purified tap water is used to cool the power plant equipment to be cooled. After the power plant equipment to be cooled generates wastewater, the wastewater parameters at the time of wastewater generation are obtained. If a first condition is met, the first purification strategy is converted to a second purification strategy based on the wastewater parameters. The operating parameters and wastewater discharge parameters of the power plant equipment are monitored in real time. If a second condition is met, the second purification strategy is converted to a third purification strategy based on the operating parameters and wastewater discharge parameters of the power plant equipment. This application selects different strategies by establishing process parameter tables for different situations. By taking both operating and wastewater discharge parameters into account, purification strategies are categorized accordingly, ensuring the adaptability of the purification process and extending the lifespan and sustainable use of power plant equipment. This ensures effective water purification to meet the complex application needs of power plant equipment under various conditions.

[0135] Through the above description of the embodiments, those skilled in the art can clearly understand that the present invention can be implemented in hardware or by means of software plus necessary general-purpose hardware platforms. Based on this understanding, the technical solution of the present invention can be embodied in the form of a software product, which can be stored in a non-volatile storage medium (such as a CD-ROM, USB flash drive, external hard drive, etc.) and includes several instructions to cause a computer device (such as a personal computer, server, or network device, etc.) to execute the methods described in the various embodiments of the present invention.

[0136] To further illustrate the technical concept of this invention, the technical solution of this invention will now be described in conjunction with specific application scenarios.

[0137] Correspondingly, this application also provides a tap water purification system for use in power plants, such as... Figure 2 As shown, the system includes:

[0138] The first module 201 is used to define each operation process involved in tap water purification and to define the process parameters of the operation process;

[0139] The second module 202 is used to establish a first process parameter table, a second process parameter table, and a third process parameter table based on the process parameters of the operating process, the operating parameters of the power plant equipment, and the sewage discharge parameters of the power plant equipment in the historical records.

[0140] The third module 203 is used to obtain multiple first purification strategies, second purification strategies and third purification strategies based on the first process parameter table, the second process parameter table and the third process parameter table;

[0141] The fourth module 204 is used to determine the first purification strategy based on the type of power plant equipment to be cooled, operating parameters and the first process parameter table, and to purify the tap water according to the first purification strategy. The purified tap water is then used to cool the power plant equipment to be cooled.

[0142] The fifth module 205 is used to obtain the wastewater parameters at the time of wastewater generation after the power plant equipment to be cooled generates wastewater, and after the first condition is met, convert the first purification strategy into the second purification strategy according to the wastewater parameters.

[0143] The sixth module 206 is used to monitor the power plant equipment operating parameters and power plant equipment discharge parameters in real time. After the second condition is met, the second purification strategy is converted into the third purification strategy based on the power plant equipment operating parameters and power plant equipment discharge parameters.

[0144] Those skilled in the art will understand that the modules in the system of the implementation scenario can be distributed throughout the system of the implementation scenario as described, or they can be modified to reside in one or more systems different from this implementation scenario. The modules of the above-mentioned implementation scenario can be merged into one module, or they can be further divided into multiple sub-modules.

[0145] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications 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.

Claims

1. A method for purifying tap water, characterized in that, When applied in power plants, the method includes: Define each operational process involved in tap water purification, and define the process parameters for each operational process; Establish a first process parameter table, a second process parameter table, and a third process parameter table based on the process parameters of the operating procedures, the operating parameters of the power plant equipment, and the sewage discharge parameters of the power plant equipment in the historical records; Obtain the process parameters of the operating process, the operating parameters of the power plant equipment, and the cooling indexes corresponding to the operating parameters at the first time scale; The process parameters of the operating procedure and the operating parameters of the power plant equipment are jointly subject to a standard cooling index. If the cooling index is lower than the standard cooling index, the process parameters of the operating procedure are adjusted based on the difference between the cooling index and the standard cooling index. A first process parameter table is established based on the correspondence between the adjusted process parameters and the power plant equipment operating parameters; Obtain the process parameters of the operating process, the power plant equipment discharge parameters, and the corresponding discharge indicators for the discharge parameters at the second time scale; The process parameters of the operating process and the power plant equipment discharge parameters together correspond to a standard discharge index. If the discharge index is lower than the standard discharge index, the process parameters of the operating process are adjusted based on the difference between the discharge index and the standard discharge index. A second process parameter table is established based on the correspondence between the adjusted process parameters and the power plant equipment discharge parameters. Obtain the process parameters and power plant equipment operating parameters of the first time scale, and the power plant equipment discharge parameters and comprehensive indicators of the second time scale at the same time. The comprehensive indicators are determined based on the sewage discharge indicators and cooling indicators; The process parameters of the operating process, the operating parameters of the power plant equipment, and the discharge parameters of the power plant equipment all correspond to a standard comprehensive index. If the comprehensive index is lower than the standard comprehensive index, the process parameters of the operating process are adjusted based on the difference between the comprehensive index and the standard comprehensive index. A third process parameter table is established based on the correspondence between the adjusted process parameters, power plant equipment operating parameters, and power plant equipment discharge parameters. Based on the first process parameter table, the second process parameter table, and the third process parameter table, several first purification strategies, second purification strategies, and third purification strategies are obtained. Based on the type of power plant equipment to be cooled, operating parameters, and the first process parameter table, a first purification strategy is determined. The tap water is purified according to the first purification strategy, and the purified tap water is used to cool the power plant equipment to be cooled. After the power plant equipment generates wastewater, the wastewater parameters at the time of wastewater generation are obtained. Once the first condition is met, the first purification strategy is converted into the second purification strategy based on the wastewater parameters. Real-time monitoring of power plant equipment operating parameters and power plant equipment discharge parameters; once the second condition is met, the second purification strategy is converted into a third purification strategy based on the power plant equipment operating parameters and power plant equipment discharge parameters; After the first condition is met, the first purification strategy is converted into a second purification strategy based on the wastewater parameters, including: If the discharge index is lower than the first threshold and the discharge index growth rate is less than the second threshold, then the first purification strategy will be switched to the second purification strategy based on the wastewater parameters. If the first condition is not met, the method further includes: Continue with the first purification strategy. When the second condition is met, switch from the first purification strategy to the third purification strategy.

2. The tap water purification method as described in claim 1, characterized in that, Based on the first process parameter table, the second process parameter table, and the third process parameter table, several first purification strategies, second purification strategies, and third purification strategies are obtained, including: The size of the power plant equipment operating parameter range is determined based on the length of the cooling index range in the first process parameter table and the types of power plant equipment operating parameters. Based on the size of the power plant equipment operating parameter range, all ranges of power plant equipment operating parameters are divided, thereby dividing the data in the first process parameter table. The process parameters of the operating process belonging to the same power plant equipment operating parameter range and the power plant equipment operating parameters are used as a first purification strategy. The size of the power plant equipment discharge parameter range is determined based on the length of the discharge index range in the second process parameter table and the types of power plant equipment discharge parameters. Based on the size of the power plant equipment discharge parameter range, all ranges of power plant equipment discharge parameters are divided, thereby dividing the data in the second process parameter table. The process parameters of the operating process belonging to the same power plant equipment discharge parameter range and the power plant equipment discharge parameters are used as a second purification strategy. The correspondence between each process parameter, power plant equipment operating parameter, and power plant equipment discharge parameter in the third process parameter table is taken as a third purification strategy.

3. The tap water purification method as described in claim 2, characterized in that, After the second condition is met, and based on the power plant equipment operating parameters and power plant equipment discharge parameters, the second purification strategy is converted into a third purification strategy, including: If the comprehensive index is lower than the third threshold and the growth rate of the comprehensive index is less than the fourth threshold, then the second purification strategy will be converted into the third purification strategy based on the power plant equipment operating parameters and the power plant equipment discharge parameters.

4. The tap water purification method as described in claim 3, characterized in that, If the second condition is not met, the method further includes: Continue with the first or second purification strategy until the second condition is met, then switch to the third purification strategy.

5. A system applying the tap water purification method as described in any one of claims 1-4, characterized in that, The system, used in power plants, includes: The first module is used to define each operation process involved in tap water purification and to define the process parameters of the operation process; The second module is used to establish a first process parameter table, a second process parameter table, and a third process parameter table based on the process parameters of the operating process, the operating parameters of the power plant equipment, and the sewage discharge parameters of the power plant equipment in the historical records. The third module is used to obtain multiple first purification strategies, second purification strategies and third purification strategies based on the first process parameter table, the second process parameter table and the third process parameter table. The fourth module is used to determine the first purification strategy based on the type of power plant equipment to be cooled, operating parameters and the first process parameter table, and to purify the tap water according to the first purification strategy. The purified tap water is then used to cool the power plant equipment to be cooled. The fifth module is used to obtain the wastewater parameters at the time of wastewater generation after the power plant equipment to be cooled generates wastewater, and after the first condition is met, convert the first purification strategy into the second purification strategy based on the wastewater parameters. The sixth module is used to monitor the power plant equipment operating parameters and power plant equipment discharge parameters in real time. After the second condition is met, the second purification strategy is converted into the third purification strategy based on the power plant equipment operating parameters and power plant equipment discharge parameters.

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