Pollution treatment method and system for circulating water of power plant

Abstract

The invention relates to the technical field of thermal power plants, and discloses a power plant circulating water pollution control method and system.The method comprises the steps that water quality reference indexes of to-be-detected circulating water are obtained in real time, the water quality reference indexes are input into a water quality analysis database, and water quality pollution indexes are obtained; analyzing the water quality pollution index, and calculating a water quality pollution factor of the to-be-detected circulating water; judging whether the to-be-detected circulating water needs pollution treatment based on the water quality pollution factor, if so, determining a water quality pollution treatment agent, and determining the input amount of the water quality pollution treatment agent according to the water quality pollution factor; the characteristic information of the water quality pollution control agent is collected, the input amount is optimized and adjusted based on the characteristic information, and the water quality pollution control agent is input into the to-be-detected circulating water according to the adjusted input amount, so that the water quality pollution factor of the circulating water can be accurately judged, and the circulating water of the power plant is specifically purified and treated. Water resource consumption is reduced, environmental pollution is reduced, and the water resource utilization efficiency and economic benefits of a power plant are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of thermal power plants, and in particular to a method and system for treating pollution of circulating water in power plants. Background Art

[0002] Thermal power plants (thermal power plants) are a type of power generation that utilizes the heat energy generated by the combustion of combustibles and converts it into electrical energy through a power generation device. With the improvement of generator and steam turbine manufacturing technology and the improvement of power transmission and transformation technology, thermal power generation has entered a period of rapid development.

[0003] During the operation of a power plant, circulating cooling water is an important water consumption link, and its water consumption often accounts for 50%-80% of the total water consumption of the power plant. Due to the continuous evaporation and concentration of circulating water, the salt content, COD, SiO2, hardness and alkalinity in the water will increase significantly. This may not only cause pipeline blockage, reduced flow, equipment overheating and reduced heat exchange efficiency, but also may cause pipeline corrosion and bonding problems due to microbial growth, seriously affecting the normal operation of the power plant. Summary of the invention

[0004] The embodiment of the present invention provides a method and system for treating pollution of circulating water in a power plant, which can achieve effective purification and treatment of circulating water in the power plant, reduce water resource consumption, reduce environmental pollution, and improve the water resource utilization efficiency and economic benefits of the power plant.

[0005] In order to achieve the above object, the present invention provides a method for treating pollution of circulating water in a power plant, comprising:

[0006] Acquire water quality reference indicators of the circulating water to be tested in real time, and input all water quality reference indicators into a water quality analysis database to obtain water quality pollution indicators of the circulating water to be tested;

[0007] Analyzing the water quality pollution index, and calculating the water quality pollution factor of the circulating water to be tested based on the analysis result;

[0008] Based on the water quality pollution factor, determine whether the circulating water to be tested needs pollution treatment, and if so, determine the water quality pollution treatment agent for the circulating water to be tested, and determine the input amount of the water quality pollution treatment agent according to the water quality pollution factor;

[0009] The characteristic information of the water quality pollution control agent is collected, and the input amount is optimized and adjusted based on the characteristic information, and the water quality pollution control agent is added into the circulating water to be tested according to the adjusted input amount.

[0010] Furthermore, the method for determining the water quality analysis database is as follows:

[0011] Collect data on multiple water quality indicators, including water temperature, pH, dissolved oxygen, permanganate index, chemical oxygen demand, five-day biochemical oxygen demand, ammonia nitrogen, total phosphorus, total nitrogen, copper, zinc, fluoride, selenium, arsenic, mercury, cadmium, chromium, lead, cyanide, volatile phenols, petroleum, anionic surfactants, sulfide, fecal coliform bacteria, sulfate, chloride, nitrate, iron and manganese, and total hardness;

[0012] Preprocessing the collected water quality index data, including normalization and weight determination, wherein the weight determination adopts an entropy weight method, based on which the contribution of different indicators to water quality evaluation is reflected;

[0013] According to the pre-processed water quality index data, the cloud model is used to evaluate the water quality. The cloud model includes three digital features: expectation, entropy and super entropy. The digital features represent the overall characteristics of the water quality concept.

[0014] The water quality analysis database is constructed according to the evaluation results.

[0015] Furthermore, when all water quality reference indicators are input into the water quality analysis database to obtain the water quality pollution indicators of the circulating water to be tested, it includes:

[0016] Outputting a water quality analysis value of each water quality reference index based on the water quality analysis database;

[0017] Obtaining a preset water quality analysis value corresponding to each water quality reference indicator, comparing all water quality analysis values ​​with the corresponding preset water quality analysis values, and deleting all water quality analysis values ​​that are less than the preset water quality analysis value;

[0018] All remaining water quality analysis values ​​are retained, and based on the pre-trained water quality important analysis model, important reference values ​​of each retained water quality analysis value are output;

[0019] Based on the pre-trained reference value-adjustment table, the adjustment coefficient corresponding to each important reference value is determined, and the water quality analysis value is adjusted based on the adjustment coefficient to obtain the target water quality analysis value;

[0020] All target water quality analysis values ​​are sorted by numerical size, and the target water quality analysis values ​​after numerical size sorting are intercepted according to the preset number of parameters;

[0021] The water quality reference indexes corresponding to all intercepted target water quality analysis values ​​are used as the water quality pollution indexes of the circulating water to be detected.

[0022] Furthermore, when analyzing the water pollution index and calculating the water pollution factor of the circulating water to be detected based on the analysis result, it includes:

[0023] Constructing a first water quality analysis value sequence according to the target water quality analysis value corresponding to the water quality pollution index;

[0024] Constructing a second water quality analysis value sequence according to the standard water quality analysis value of the target water quality analysis value corresponding to the water quality pollution index;

[0025] Construct a comparison matrix U based on the first water quality analysis value sequence and the second water quality analysis value sequence:

[0026]

[0027] Among them, u nn The comparison result between the nth target analysis water quality in the first water quality analysis value sequence and the nth standard water quality analysis value in the second water quality analysis value sequence;

[0028] Based on the comparison matrix U, the sub-pollution factor of each target water quality analysis is determined:

[0029]

[0030] Among them, b is the sub-pollution factor of the target water quality, c is the number of target water quality, fi is the comparison result corresponding to the i-th target water quality, g is the average of all comparison results, and ri is the weight corresponding to the i-th target water quality;

[0031] The water quality pollution factor of the circulating water to be tested is calculated based on all the sub-pollution factors.

[0032] Furthermore, when calculating the water quality pollution factor of the circulating water to be detected according to all the sub-pollution factors, it includes:

[0033] Perform curve fitting on all sub-pollution factors to obtain sub-pollution factor fitting curves;

[0034] Determine the unfitted sub-pollution factors, and respectively determine the distance between each unfitted sub-pollution factor and the sub-pollution factor fitting curve;

[0035] Obtain a preset distance threshold, extract all distances less than the distance threshold, and count the corresponding distances;

[0036] When the distance number is greater than the preset distance number, the water quality pollution factor of the circulating water to be tested is calculated according to all sub-pollution factors;

[0037] When the distance number is less than or equal to the preset distance number, the water quality pollution factor of the circulating water to be detected is calculated according to the sub-pollution factor on the sub-pollution factor fitting curve; wherein,

[0038] The sum of the water quality pollution factors that meet the conditions is used as the water quality pollution factor of the circulating water to be tested.

[0039] Further, when judging whether the circulating water to be detected needs pollution treatment based on the water pollution factor, it includes:

[0040] Obtaining a preset water quality pollution factor, and judging whether the circulating water to be detected needs pollution treatment according to the relationship between the water quality pollution factor and the preset water quality pollution factor;

[0041] When the water quality pollution factor is less than the preset water quality pollution factor, it is determined that the circulating water to be tested does not need pollution treatment;

[0042] When the water quality pollution factor is greater than or equal to the preset water quality pollution factor, it is determined that the circulating water to be detected needs pollution treatment.

[0043] Furthermore, when determining the input amount of the water pollution control agent according to the water pollution factor, it includes:

[0044] Preset a plurality of water quality pollution factor intervals, wherein each water quality pollution factor interval includes a first preset water quality pollution factor and a second preset water quality pollution factor;

[0045] Preset multiple input amounts, wherein each input amount is set in one-to-one correspondence with a water quality pollution factor interval;

[0046] Traversing the water quality pollution factor in all water quality pollution factor intervals, and determining the water quality pollution factor interval corresponding to the water quality pollution factor, and determining the corresponding input amount;

[0047] The determined input amount is used as the input amount of the water pollution control agent.

[0048] Furthermore, when collecting the characteristic information of the water pollution control agent and optimizing and adjusting the input amount based on the characteristic information, it includes:

[0049] Input all feature information into the corresponding feature information analysis model, and output the feature analysis value corresponding to each feature information;

[0050] Calculate the influence factor of the characteristic information on the water quality pollution control agent according to all characteristic analysis values;

[0051]

[0052] Among them, w is the impact factor, m is the number of feature information, tj is the feature analysis value corresponding to the j-th feature information, and yj is the weight corresponding to the j-th feature information;

[0053] The input amount is optimized and adjusted based on the influencing factors.

[0054] Furthermore, when optimizing and adjusting the input amount based on the influencing factor, it includes:

[0055] Presetting a plurality of impact factor intervals, wherein each impact factor interval includes a first preset impact factor and a second preset impact factor;

[0056] Preset multiple optimization adjustment coefficients, wherein each optimization adjustment coefficient is set in one-to-one correspondence with an impact factor interval;

[0057] Traversing the influencing factor in all influencing factor intervals, and determining the influencing factor interval corresponding to the influencing factor, and determining the corresponding optimization adjustment coefficient;

[0058] The input amount is optimized and adjusted based on the determined optimization adjustment coefficient.

[0059] In order to achieve the above object, the present invention also provides a power plant circulating water pollution control system, comprising:

[0060] An analysis module is used to obtain water quality reference indicators of the circulating water to be tested in real time, and input all water quality reference indicators into a water quality analysis database to obtain water quality pollution indicators of the circulating water to be tested;

[0061] A calculation module, used to analyze the water quality pollution index and calculate the water quality pollution factor of the circulating water to be tested based on the analysis result;

[0062] A determination module, used to determine whether the circulating water to be detected needs pollution treatment based on the water pollution factor, and if so, determine the water pollution treatment agent for the circulating water to be detected, and determine the input amount of the water pollution treatment agent according to the water pollution factor;

[0063] The regulating module is used to collect characteristic information of the water quality pollution control agent, and optimize and adjust the input amount based on the characteristic information, and input the water quality pollution control agent into the circulating water to be detected according to the adjusted input amount.

[0064] Compared with the prior art, the present invention has the following beneficial effects:

[0065] The invention discloses a method and system for treating pollution of circulating water in a power plant. The method comprises: obtaining water quality reference indicators of circulating water to be detected in real time, inputting the water quality reference indicators into a water quality analysis database to obtain water quality pollution indicators; analyzing the water quality pollution indicators and calculating water quality pollution factors of circulating water to be detected; judging whether the circulating water to be detected needs pollution treatment based on the water quality pollution factors, and if so, determining a water quality pollution treatment agent, and determining the input amount of the water quality pollution treatment agent according to the water quality pollution factors; collecting characteristic information of the water quality pollution treatment agent, optimizing and adjusting the input amount based on the characteristic information, and adding the water quality pollution treatment agent into the circulating water to be detected according to the adjusted input amount, so as to accurately judge the water quality pollution factors of the circulating water, and carry out targeted purification and treatment of the circulating water of the power plant, reduce water resource consumption, reduce environmental pollution, and improve the water resource utilization efficiency and economic benefits of the power plant. BRIEF DESCRIPTION OF THE DRAWINGS

[0066] 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:

[0067] Figure 1 A schematic diagram of a process for treating pollution of circulating water in a power plant according to an embodiment of the present invention is shown;

[0068] Figure 2 The schematic diagram of the structure of the circulating water pollution control system of a power plant in an embodiment of the present invention is shown. DETAILED DESCRIPTION

[0069] The specific implementation of the present invention is further described in detail below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0070] In the description of the present application, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0071] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise specified, "plurality" means two or more.

[0072] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0073] The following is a description of preferred embodiments of the present invention with reference to the accompanying drawings.

[0074] like Figure 1 As shown, an embodiment of the present invention discloses a method for treating pollution of circulating water in a power plant, comprising:

[0075] S110: Acquire water quality reference indicators of the circulating water to be tested in real time, and input all water quality reference indicators into a water quality analysis database to obtain water quality pollution indicators of the circulating water to be tested;

[0076] In this embodiment, the water quality reference indicators include pH value, dissolved oxygen, permanganate index, chemical oxygen demand, five-day biochemical oxygen demand, ammonia nitrogen, total phosphorus, total nitrogen, copper, zinc, fluoride, selenium, arsenic, mercury, cadmium, chromium, etc.

[0077] In some embodiments of the present application, the method for determining the water quality analysis database is as follows:

[0078] Collect data on multiple water quality indicators, including water temperature, pH, dissolved oxygen, permanganate index, chemical oxygen demand, five-day biochemical oxygen demand, ammonia nitrogen, total phosphorus, total nitrogen, copper, zinc, fluoride, selenium, arsenic, mercury, cadmium, chromium, lead, cyanide, volatile phenols, petroleum, anionic surfactants, sulfide, fecal coliform bacteria, sulfate, chloride, nitrate, iron and manganese, and total hardness;

[0079] Preprocessing the collected water quality index data, including normalization and weight determination, wherein the weight determination adopts an entropy weight method, based on which the contribution of different indicators to water quality evaluation is reflected;

[0080] According to the pre-processed water quality index data, the cloud model is used to evaluate the water quality. The cloud model includes three digital features: expectation, entropy and super entropy. The digital features represent the overall characteristics of the water quality concept.

[0081] The water quality analysis database is constructed according to the evaluation results.

[0082] The beneficial effect of the above technical solution is that the present invention can accurately output the water quality analysis value corresponding to each water quality reference index by constructing a water quality analysis database, thus laying a foundation for circulating water pollution control.

[0083] In some embodiments of the present application, when all water quality reference indicators are input into the water quality analysis database to obtain the water quality pollution indicator of the circulating water to be detected, it includes:

[0084] Outputting a water quality analysis value of each water quality reference index based on the water quality analysis database;

[0085] Obtaining a preset water quality analysis value corresponding to each water quality reference indicator, comparing all water quality analysis values ​​with the corresponding preset water quality analysis values, and deleting all water quality analysis values ​​that are less than the preset water quality analysis value;

[0086] All remaining water quality analysis values ​​are retained, and based on the pre-trained water quality important analysis model, important reference values ​​of each retained water quality analysis value are output;

[0087] Based on the pre-trained reference value-adjustment table, the adjustment coefficient corresponding to each important reference value is determined, and the water quality analysis value is adjusted based on the adjustment coefficient to obtain the target water quality analysis value;

[0088] All target water quality analysis values ​​are sorted by numerical size, and the target water quality analysis values ​​after numerical size sorting are intercepted according to the preset number of parameters;

[0089] The water quality reference indexes corresponding to all intercepted target water quality analysis values ​​are used as the water quality pollution indexes of the circulating water to be detected.

[0090] In this embodiment, the water quality important analysis model is pre-trained and can output important reference values ​​corresponding to each water quality analysis value.

[0091] In this embodiment, the preset reference number can be set according to actual conditions, such as 8, 9, 10, etc.

[0092] The beneficial effect of the above technical solution is that the present invention uses the water quality reference indicators corresponding to all intercepted target water quality analysis values ​​as water quality pollution indicators for the circulating water to be tested, providing data support for determining whether the circulating water of the power plant is polluted water.

[0093] S120: Analyze the water quality pollution index, and calculate the water quality pollution factor of the circulating water to be tested based on the analysis result;

[0094] In some embodiments of the present application, when analyzing the water quality pollution index and calculating the water quality pollution factor of the circulating water to be detected based on the analysis result, it includes:

[0095] Constructing a first water quality analysis value sequence according to the target water quality analysis value corresponding to the water quality pollution index;

[0096] Constructing a second water quality analysis value sequence according to the standard water quality analysis value of the target water quality analysis value corresponding to the water quality pollution index;

[0097] Construct a comparison matrix U based on the first water quality analysis value sequence and the second water quality analysis value sequence:

[0098]

[0099] Among them, u nn The comparison result between the nth target analysis water quality in the first water quality analysis value sequence and the nth standard water quality analysis value in the second water quality analysis value sequence;

[0100] Based on the comparison matrix U, the sub-pollution factor of each target water quality analysis is determined:

[0101]

[0102] Among them, b is the sub-pollution factor of the target water quality, c is the number of target water quality, fi is the comparison result corresponding to the i-th target water quality, g is the average of all comparison results, and ri is the weight corresponding to the i-th target water quality;

[0103] The water quality pollution factor of the circulating water to be tested is calculated based on all the sub-pollution factors.

[0104] The beneficial effect of the above technical solution is that the present invention calculates the sub-pollution factors of each target analyzed water quality, which can ensure the accurate calculation of the water quality pollution factors and avoid the errors existing in human participation.

[0105] In some embodiments of the present application, when calculating the water quality pollution factor of the circulating water to be detected according to all the sub-pollution factors, it includes:

[0106] Perform curve fitting on all sub-pollution factors to obtain sub-pollution factor fitting curves;

[0107] Determine the unfitted sub-pollution factors, and respectively determine the distance between each unfitted sub-pollution factor and the sub-pollution factor fitting curve;

[0108] Obtain a preset distance threshold, extract all distances less than the distance threshold, and count the corresponding distances;

[0109] When the distance number is greater than the preset distance number, the water quality pollution factor of the circulating water to be tested is calculated according to all sub-pollution factors;

[0110] When the distance number is less than or equal to the preset distance number, the water quality pollution factor of the circulating water to be detected is calculated according to the sub-pollution factor on the sub-pollution factor fitting curve; wherein,

[0111] The sum of the water quality pollution factors that meet the conditions is used as the water quality pollution factor of the circulating water to be tested.

[0112] In this embodiment, the polyval function in MATLAB is used to perform curve fitting and distance calculation.

[0113] In this embodiment, the number of distances is 3.

[0114] In this embodiment, when the number of distances is greater than the preset number of distances, the sum of all sub-pollution factors is calculated, and the sum is used as the water quality pollution factor of the circulating water to be detected.

[0115] In this embodiment, when the number of distances is less than or equal to the preset number of distances, the sum of the sub-pollution factors on the sub-pollution factor fitting curve is calculated, and the sum is used as the water quality pollution factor of the circulating water to be detected.

[0116] The beneficial effect of the above technical solution is that the present invention can provide a basis for judging the circulating water to be tested by calculating the water quality pollution factor of the circulating water to be tested, and can also lay a foundation for the investment of water quality pollution control agents.

[0117] S130: judging whether the circulating water to be tested needs pollution treatment based on the water pollution factor, and if so, determining a water pollution treatment agent for the circulating water to be tested, and determining an input amount of the water pollution treatment agent according to the water pollution factor;

[0118] In some embodiments of the present application, when judging whether the circulating water to be detected needs pollution treatment based on the water pollution factor, it includes:

[0119] Obtaining a preset water quality pollution factor, and judging whether the circulating water to be detected needs pollution treatment according to the relationship between the water quality pollution factor and the preset water quality pollution factor;

[0120] When the water quality pollution factor is less than the preset water quality pollution factor, it is determined that the circulating water to be tested does not need pollution treatment;

[0121] When the water quality pollution factor is greater than or equal to the preset water quality pollution factor, it is determined that the circulating water to be detected needs pollution treatment.

[0122] In this embodiment, the preset water pollution factor is 8.

[0123] The beneficial effect of the above technical solution is that the present invention determines whether the circulating water to be tested needs pollution treatment according to the relationship between the water quality pollution factor and the preset water quality pollution factor, thereby achieving accurate and quick judgment.

[0124] In some embodiments of the present application, when determining the input amount of the water pollution control agent according to the water pollution factor, it includes:

[0125] Preset a plurality of water quality pollution factor intervals, wherein each water quality pollution factor interval includes a first preset water quality pollution factor and a second preset water quality pollution factor;

[0126] Preset multiple input amounts, wherein each input amount is set in one-to-one correspondence with a water quality pollution factor interval;

[0127] Traversing the water quality pollution factor in all water quality pollution factor intervals, and determining the water quality pollution factor interval corresponding to the water quality pollution factor, and determining the corresponding input amount;

[0128] The determined input amount is used as the input amount of the water pollution control agent.

[0129] In this embodiment, the water pollution treatment agent includes flocculants, disinfectants, oxidants, etc., which can be selected according to actual needs.

[0130] The beneficial effect of the above technical solution is that the present invention selects the corresponding input amount according to the water quality pollution factor and the set water quality pollution factor interval, thereby ensuring the accurate setting of the input amount and avoiding the errors existing in manual setting.

[0131] S140: collecting characteristic information of the water quality pollution control agent, optimizing and adjusting the input amount based on the characteristic information, and adding the water quality pollution control agent into the circulating water to be tested according to the adjusted input amount.

[0132] In some embodiments of the present application, when collecting characteristic information of the water pollution control agent and optimizing and adjusting the input amount based on the characteristic information, it includes:

[0133] Input all feature information into the corresponding feature information analysis model, and output the feature analysis value corresponding to each feature information;

[0134] Calculate the influence factor of the characteristic information on the water quality pollution control agent according to all characteristic analysis values;

[0135]

[0136] Among them, w is the impact factor, m is the number of feature information, tj is the feature analysis value corresponding to the j-th feature information, and yj is the weight corresponding to the j-th feature information;

[0137] The input amount is optimized and adjusted based on the influencing factors.

[0138] In this embodiment, the characteristic information includes the type and concentration of pollutants, the type of reagents, water quality conditions, etc.

[0139] In some embodiments of the present application, when optimizing and adjusting the input amount based on the influencing factor, it includes:

[0140] Presetting a plurality of impact factor intervals, wherein each impact factor interval includes a first preset impact factor and a second preset impact factor;

[0141] Preset multiple optimization adjustment coefficients, wherein each optimization adjustment coefficient is set in one-to-one correspondence with an impact factor interval;

[0142] Traversing the influencing factor in all influencing factor intervals, and determining the influencing factor interval corresponding to the influencing factor, and determining the corresponding optimization adjustment coefficient;

[0143] The input amount is optimized and adjusted based on the determined optimization adjustment coefficient.

[0144] The beneficial effect of the above technical solution is that the present invention realizes the dynamic regulation of water quality pollution control agents. By calculating the influencing factors, the input amount of water quality pollution control agents can be fine-tuned to ensure the accuracy of the target input amount and the comprehensiveness of the calculation.

[0145] In order to further explain the technical idea of ​​the present invention, the technical solution of the present invention is now described in combination with specific application scenarios.

[0146] Correspondingly, such as Figure 2 As shown, the present application also provides a power plant circulating water pollution control system, comprising:

[0147] An analysis module is used to obtain water quality reference indicators of the circulating water to be tested in real time, and input all water quality reference indicators into a water quality analysis database to obtain water quality pollution indicators of the circulating water to be tested;

[0148] A calculation module, used to analyze the water quality pollution index and calculate the water quality pollution factor of the circulating water to be tested based on the analysis result;

[0149] A determination module, used to determine whether the circulating water to be detected needs pollution treatment based on the water pollution factor, and if so, determine the water pollution treatment agent for the circulating water to be detected, and determine the input amount of the water pollution treatment agent according to the water pollution factor;

[0150] The regulating module is used to collect characteristic information of the water quality pollution control agent, and optimize and adjust the input amount based on the characteristic information, and input the water quality pollution control agent into the circulating water to be detected according to the adjusted input amount.

[0151] In the description of the above embodiments, specific features, structures, materials or characteristics may be combined in a suitable manner in any one or more embodiments or examples.

[0152] Although the present invention has been described above with reference to the embodiments, various modifications may be made thereto and parts thereof may be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the various features in the embodiments disclosed by the present invention may be used in combination with each other in any manner, and the fact that these combinations are not fully described in this specification is only for the sake of omitting space and saving resources.

[0153] Those skilled in the art can understand that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions recorded in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A method for treating pollution of circulating water in a power plant, characterized in that: include: Acquire water quality reference indicators of the circulating water to be tested in real time, and input all water quality reference indicators into a water quality analysis database to obtain water quality pollution indicators of the circulating water to be tested; Analyzing the water quality pollution index, and calculating the water quality pollution factor of the circulating water to be tested based on the analysis result; Based on the water quality pollution factor, determine whether the circulating water to be tested needs pollution treatment, and if so, determine the water quality pollution treatment agent for the circulating water to be tested, and determine the input amount of the water quality pollution treatment agent according to the water quality pollution factor; The characteristic information of the water quality pollution control agent is collected, and the input amount is optimized and adjusted based on the characteristic information, and the water quality pollution control agent is added into the circulating water to be tested according to the adjusted input amount.

2. The method for treating pollution of circulating water in a power plant according to claim 1, characterized in that: The method for determining the water quality analysis database is as follows: Collect data on multiple water quality indicators, including water temperature, pH, dissolved oxygen, permanganate index, chemical oxygen demand, five-day biochemical oxygen demand, ammonia nitrogen, total phosphorus, total nitrogen, copper, zinc, fluoride, selenium, arsenic, mercury, cadmium, chromium, lead, cyanide, volatile phenols, petroleum, anionic surfactants, sulfide, fecal coliform bacteria, sulfate, chloride, nitrate, iron and manganese, and total hardness; Preprocessing the collected water quality index data, including normalization and weight determination, wherein the weight determination adopts an entropy weight method, based on which the contribution of different indicators to water quality evaluation is reflected; According to the pre-processed water quality index data, the cloud model is used to evaluate the water quality. The cloud model includes three digital features: expectation, entropy and super entropy. The digital features represent the overall characteristics of the water quality concept. The water quality analysis database is constructed according to the evaluation results.

3. The method for treating pollution of circulating water in a power plant according to claim 1, characterized in that: When all water quality reference indicators are input into the water quality analysis database to obtain the water quality pollution indicators of the circulating water to be tested, it includes: Outputting a water quality analysis value of each water quality reference index based on the water quality analysis database; Obtaining a preset water quality analysis value corresponding to each water quality reference indicator, comparing all water quality analysis values ​​with the corresponding preset water quality analysis values, and deleting all water quality analysis values ​​that are less than the preset water quality analysis value; All remaining water quality analysis values ​​are retained, and based on the pre-trained water quality important analysis model, important reference values ​​of each retained water quality analysis value are output; Based on the pre-trained reference value-adjustment table, the adjustment coefficient corresponding to each important reference value is determined, and the water quality analysis value is adjusted based on the adjustment coefficient to obtain the target water quality analysis value; All target water quality analysis values ​​are sorted by numerical size, and the target water quality analysis values ​​after numerical size sorting are intercepted according to the preset number of parameters; The water quality reference indexes corresponding to all intercepted target water quality analysis values ​​are used as the water quality pollution indexes of the circulating water to be detected.

4. The method for treating pollution of circulating water in a power plant according to claim 3, characterized in that: When analyzing the water quality pollution index and calculating the water quality pollution factor of the circulating water to be tested based on the analysis result, it includes: Constructing a first water quality analysis value sequence according to the target water quality analysis value corresponding to the water quality pollution index; Constructing a second water quality analysis value sequence according to the standard water quality analysis value of the target water quality analysis value corresponding to the water quality pollution index; Construct a comparison matrix U based on the first water quality analysis value sequence and the second water quality analysis value sequence: Among them, u nn The comparison result between the nth target analysis water quality in the first water quality analysis value sequence and the nth standard water quality analysis value in the second water quality analysis value sequence; Based on the comparison matrix U, the sub-pollution factor of each target water quality analysis is determined: Among them, b is the sub-pollution factor of the target analysis water quality, c is the number of target analysis water quality, fi is the comparison result corresponding to the i-th target analysis water quality, g is the average of all comparison results, and ri is the weight corresponding to the i-th target water quality; The water quality pollution factor of the circulating water to be tested is calculated based on all the sub-pollution factors.

5. The method for treating pollution of circulating water in a power plant according to claim 4, characterized in that: When calculating the water quality pollution factor of the circulating water to be tested according to all the sub-pollution factors, it includes: Perform curve fitting on all sub-pollution factors to obtain sub-pollution factor fitting curves; Determine the unfitted sub-pollution factors, and respectively determine the distance between each unfitted sub-pollution factor and the sub-pollution factor fitting curve; Obtain a preset distance threshold, extract all distances less than the distance threshold, and count the corresponding distances; When the distance number is greater than the preset distance number, the water quality pollution factor of the circulating water to be tested is calculated according to all sub-pollution factors; When the distance number is less than or equal to the preset distance number, the water quality pollution factor of the circulating water to be detected is calculated according to the sub-pollution factor on the sub-pollution factor fitting curve; wherein, The sum of the water quality pollution factors that meet the conditions is used as the water quality pollution factor of the circulating water to be tested.

6. The method for treating pollution of circulating water in a power plant according to claim 1, characterized in that: When judging whether the circulating water to be detected needs pollution treatment based on the water pollution factor, it includes: Obtaining a preset water quality pollution factor, and judging whether the circulating water to be detected needs pollution treatment according to the relationship between the water quality pollution factor and the preset water quality pollution factor; When the water quality pollution factor is less than the preset water quality pollution factor, it is determined that the circulating water to be tested does not need pollution treatment; When the water quality pollution factor is greater than or equal to the preset water quality pollution factor, it is determined that the circulating water to be detected needs pollution treatment.

7. The method for treating pollution of circulating water in a power plant according to claim 6, characterized in that: When determining the input amount of the water pollution control agent according to the water pollution factor, it includes: Preset a plurality of water quality pollution factor intervals, wherein each water quality pollution factor interval includes a first preset water quality pollution factor and a second preset water quality pollution factor; Preset multiple input amounts, wherein each input amount is set in one-to-one correspondence with a water quality pollution factor interval; Traversing the water quality pollution factor in all water quality pollution factor intervals, and determining the water quality pollution factor interval corresponding to the water quality pollution factor, and determining the corresponding input amount; The determined input amount is used as the input amount of the water pollution control agent.

8. The method for treating pollution of circulating water in a power plant according to claim 7, characterized in that: When the characteristic information of the water pollution control agent is collected and the input amount is optimized and adjusted based on the characteristic information, it includes: Input all feature information into the corresponding feature information analysis model, and output the feature analysis value corresponding to each feature information; Calculate the influence factor of the characteristic information on the water quality pollution control agent according to all characteristic analysis values; Among them, w is the impact factor, m is the number of feature information, tj is the feature analysis value corresponding to the j-th feature information, and yj is the weight corresponding to the j-th feature information; The input amount is optimized and adjusted based on the influencing factors.

9. The method for treating pollution of circulating water in a power plant according to claim 8, characterized in that: When optimizing and adjusting the input amount based on the influencing factor, it includes: Presetting a plurality of impact factor intervals, wherein each impact factor interval includes a first preset impact factor and a second preset impact factor; Preset multiple optimization adjustment coefficients, wherein each optimization adjustment coefficient is set in one-to-one correspondence with an impact factor interval; Traversing the influencing factor in all influencing factor intervals, and determining the influencing factor interval corresponding to the influencing factor, and determining the corresponding optimization adjustment coefficient; The input amount is optimized and adjusted based on the determined optimization adjustment coefficient.

10. A power plant circulating water pollution control system, characterized in that: include: An analysis module is used to obtain water quality reference indicators of the circulating water to be tested in real time, and input all water quality reference indicators into a water quality analysis database to obtain water quality pollution indicators of the circulating water to be tested; A calculation module, used to analyze the water quality pollution index and calculate the water quality pollution factor of the circulating water to be tested based on the analysis result; A determination module, used to determine whether the circulating water to be detected needs pollution treatment based on the water pollution factor, and if so, determine the water pollution treatment agent for the circulating water to be detected, and determine the input amount of the water pollution treatment agent according to the water pollution factor; The regulating module is used to collect characteristic information of the water quality pollution control agent, and optimize and adjust the input amount based on the characteristic information, and input the water quality pollution control agent into the circulating water to be detected according to the adjusted input amount.

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