A detection method and system for typical pollutants in water environment

Abstract

The present invention discloses a detection method and system for typical pollutants in the water environment, which relates to the technical field of water environment treatment. By quantitatively analyzing the priority control pollutant group in the water environment, the present invention obtains the health value of the water environment, and further obtains the pollution level of the water environment based on threshold judgment. Then, an early warning is set according to the pollution level of the water environment, and more accurate and comprehensive early warning information can be obtained. At the same time, the quantitative processing method of the present invention, for pollutant tracing, can not only effectively ensure the scientificity and accuracy of tracing, but also more conveniently and quickly locate pollutants, and can effectively avoid misjudgment and missed judgment. For the environmental protection department, this provides a powerful tool and technical support, helps to take effective treatment measures in time, reduce the occurrence of environmental pollution incidents, protect water resources, ensure public health, and provide data support for formulating more scientific and accurate environmental management policies.

Description

Technical Field

[0001] The present invention relates to the technical field of water environment treatment, and particularly to a method and system for detecting typical pollutants in water environment. Background Art

[0002] Water environmental pollution is a major problem faced globally. Especially with the rapid development of industrialization and urbanization, the types and quantities of pollutants in water bodies are constantly increasing. These pollutants not only damage the aquatic ecosystem but may also affect human health through the food chain. Therefore, accurate and rapid detection and assessment of typical pollutants in water environment, also known as priority control pollutant groups, have become an important task for environmental protection and management.

[0003] Currently, the detection methods for typical pollutants in water environment mainly include the following several types:

[0004] I. Traditional laboratory analysis: This method usually includes steps such as sampling, transportation, sample pretreatment, and laboratory analysis. Commonly used analysis techniques include gas chromatography - mass spectrometry, high - performance liquid chromatography, atomic absorption spectrometry, etc. Although these methods have high accuracy and reliability, they have the disadvantages of complex operation, long time consumption, high cost, and inability to monitor in real - time;

[0005] II. On - site rapid detection: To overcome the deficiencies of traditional laboratory analysis, various on - site rapid detection techniques have been developed in recent years, such as portable spectrophotometers, electrochemical sensors, biosensors, etc. These techniques can achieve on - site rapid detection and reduce sample transportation and processing time, but their sensitivity and accuracy are often not as good as laboratory methods, and the applicable range is limited;

[0006] III. Remote sensing technology: Using remote sensing equipment carried by satellites or drones, large - area water areas can be rapidly monitored. However, remote sensing technology is mainly applicable to macroscopic - scale monitoring, has weak quantitative analysis ability for specific pollutants, and is greatly affected by weather conditions;

[0007] IV. Online monitoring system: Some online monitoring systems are installed at fixed positions and can monitor water quality parameters in real - time, such as pH value, dissolved oxygen, turbidity, etc. But for the detection of specific pollutants, these systems still rely on laboratory analysis or other auxiliary equipment and are difficult to achieve comprehensive and accurate monitoring;

[0008] Although the existing detection methods for typical pollutants in water environment meet some requirements to a certain extent, there are still the following significant defects:

[0009] Currently, most detection methods only focus on the concentrations of single or a few pollutants, lacking a comprehensive assessment of multiple pollutants, and unable to fully reflect the overall condition of the water environment. At the same time, there is a lack of effective data integration and analysis means, making it difficult to effectively correlate and compare data from different sources, resulting in inaccurate and incomplete early warning information. In addition, existing early warning systems are mostly based on single indicators or simple threshold settings, lacking a scientific and reasonable setting process, leading to the reliability and comprehensiveness of early warning information needing to be improved. At the same time, it is prone to the problem of difficult pollutant tracing. Once a pollution incident occurs, it is very difficult to quickly locate the pollution source, resulting in lagging treatment measures and affecting the treatment effect.

[0010] Therefore, there is an urgent need in the existing technology for a technical solution for a detection method and system of typical pollutants in the water environment. Summary of the Invention

[0011] To solve the above technical problems, the present invention provides a detection method for typical pollutants in the water environment, specifically including the following steps:

[0012] Step S1: Qualitatively identify the priority control pollutant groups in the water environment through multiple portable Raman spectrometers, collect the pollutant data in each priority control pollutant group and perform preprocessing, and the pollutant data includes concentration data;

[0013] Step S2: Transmit the pollutant data of each preprocessed priority control pollutant group to the environmental pollutant detection cloud platform through a wireless network, and analyze it by the environmental pollutant detection cloud platform to obtain the water environment health value;

[0014] Step S2a: Analyze the pollutant data of each preprocessed priority control pollutant group through the environmental pollutant detection cloud platform to obtain the concentration index of each pollutant in each priority control pollutant group;

[0015] Step S2a1: Through the environmental pollutant detection cloud platform, call the concentration peak value of each pollutant in each priority control pollutant group;

[0016] Step S2a2: Obtain the concentration standard value of each pollutant in each priority control pollutant group;

[0017] Step S2a3: According to the concentration peak value of each pollutant in each priority control pollutant group and the concentration standard value of each pollutant in each priority control pollutant group, obtain the concentration index of each pollutant in each priority control pollutant group;

[0018] Among them, the calculation formula for obtaining the concentration index of each pollutant in each priority control pollutant group is:

[0019] ;

[0020] Among them, represents the concentration index of the j-th pollutant in the i-th priority control pollutant group; represents the concentration peak value of the j-th pollutant in the i-th priority control pollutant group; represents the concentration standard value of the j-th pollutant in the i-th priority control pollutant group;

[0021] Step S2b: Obtain the comprehensive concentration index of each priority control pollutant group according to the concentration index of each pollutant in each priority control pollutant group.

[0022] Step S2b1: Through the environmental pollutant detection cloud platform, call the concentration data of each pollutant in at least two priority control pollutant groups, and perform averaging processing to obtain the average concentration data of each pollutant in each priority control pollutant group. According to the average concentration data, obtain the standard deviation of the concentration data of each pollutant in each priority control pollutant group.

[0023] Step S2b2: Analyze the degree of influence of each pollutant on water environmental pollution in each priority control pollutant group, and assign weights to each pollutant in each priority control pollutant group according to the analysis results.

[0024] Step S2b3: According to the average concentration data of each pollutant in each priority control pollutant group, the standard deviation of the concentration data of each pollutant in each priority control pollutant group, the weight of each pollutant in each priority control pollutant group, and the concentration index of each pollutant in each priority control pollutant group, obtain the comprehensive concentration index of each priority control pollutant group.

[0025] Among them, the calculation formula for obtaining the comprehensive concentration index of each priority control pollutant group is:

[0026] ;

[0027] Among them, represents the comprehensive concentration index of the i-th priority control pollutant group; represents the average concentration data of the j-th pollutant in the i-th priority control pollutant group; represents the weight of the j-th pollutant in the i-th priority control pollutant group; represents the concentration index of the j-th pollutant in the i-th priority control pollutant group; k represents the adjustment coefficient, which is used to balance the relationship between the average concentration and the concentration fluctuation; represents the standard deviation of the concentration data of the j-th pollutant in the i-th priority control pollutant group; represents the number of pollutants in the i-th priority control pollutant group;

[0028] Step S2c: Compare the concentration index of each pollutant in each priority control pollutant group with the comprehensive concentration index of each priority control pollutant group to obtain the contribution rate of each pollutant in each priority control pollutant group.

[0029] Among them, the calculation formula for obtaining the contribution rate of each pollutant in each priority control pollutant group is:

[0030] ;

[0031] Among them, R ij represents the contribution rate of the j-th pollutant in the i-th priority control pollutant group; I cij represents the concentration index of the j-th pollutant in the i-th priority control pollutant group; I ci represents the comprehensive concentration index of the i-th priority control pollutant group;

[0032] Step S2d, according to the contribution rate of each pollutant in each priority control pollutant group, obtain the comprehensive contribution rate of each priority control pollutant group;

[0033] Among them, the calculation formula for obtaining the comprehensive contribution rate of each priority control pollutant group is:

[0034] ;

[0035] Among them, R ci represents the comprehensive contribution rate of the i-th priority control pollutant group; R ij represents the contribution rate of the j-th pollutant in the i-th priority control pollutant group; W ij represents the weight of the j-th pollutant in the i-th priority control pollutant group; n i represents the number of pollutants in the i-th priority control pollutant group;

[0036] Step S2e, according to the concentration index of each pollutant in each priority control pollutant group, the comprehensive concentration index of each priority control pollutant group, the contribution rate of each pollutant in each priority control pollutant group, and the comprehensive contribution rate of each priority control pollutant group, obtain the water environment health value;

[0037] Among them, the calculation formula for obtaining the water environment health value is:

[0038] ;

[0039] Among them, H represents the water environment health value; I ci represents the comprehensive concentration index of the i-th priority control pollutant group; I cij represents the concentration index of the j-th pollutant in the i-th priority control pollutant group; R ij represents the contribution rate of the j-th pollutant in the i-th priority control pollutant group; R ci represents the comprehensive contribution rate of the i-th priority control pollutant group; m represents the total number of priority control pollutant groups; n i represents the number of pollutants in the i-th priority control pollutant group;

[0040] Step S3: Set at least two thresholds for the water environment health value, divide the water environment health value by the thresholds, and determine the water environment pollution level according to the division result;

[0041] The thresholds include a first threshold, a second threshold, a third threshold, a fourth threshold, and a fifth threshold; when the water environment health value is less than the first threshold, it is determined that the water environment pollution level is level one; when the water environment health value is greater than or equal to the first threshold and less than the second threshold, it is determined that the water environment pollution level is level two; when the water environment health value is greater than or equal to the second threshold and less than the third threshold, it is determined that the water environment pollution level is level three; when the water environment health value is greater than or equal to the third threshold and less than the fourth threshold, it is determined that the water environment pollution level is level four; when the water environment health value is greater than or equal to the fourth threshold and less than the fifth threshold, it is determined that the water environment pollution level is level five; when the water environment health value is greater than or equal to the fifth threshold, it is determined that the water environment pollution level is level six;

[0042] Step S4: Set the water environment warning level according to the water environment pollution level, trace the pollutants in the water environment according to the warning level, and adopt the water environment restoration strategy for the tracing result.

[0043] A detection system for typical pollutants in the water environment, which executes a detection method for typical pollutants in the water environment as described above, includes the following modules:

[0044] Data acquisition and preprocessing module: used to qualitatively identify the priority control pollutant groups in the water environment through multiple portable Raman spectrometers, collect the pollutant data in each priority control pollutant group and perform preprocessing, and the pollutant data includes concentration data;

[0045] Analysis and calculation module: connected to the data acquisition and preprocessing module, used to transmit the pollutant data of each priority control pollutant group after preprocessing to the environmental pollutant detection cloud platform through the wireless network, and analyze by the environmental pollutant detection cloud platform to obtain the water environment health value;

[0046] Threshold determination module: connected to the analysis and calculation module, used to set at least two thresholds for the water environment health value, divide the water environment health value by the thresholds, and determine the water environment pollution level according to the division result;

[0047] Warning module: connected to the threshold determination module, used to set the water environment warning level according to the water environment pollution level, trace the pollutants in the water environment according to the warning level, and adopt the water environment restoration strategy for the tracing result.

[0048] The embodiments of the present invention have the following technical effects:

[0049] The present invention aims to quantitatively analyze the priority control pollutant groups in the water environment, obtain the health value of the water environment, and further obtain the pollution level of the water environment based on threshold judgment. Then, an early warning is set according to the pollution level of the water environment, and more accurate and comprehensive early warning information can be obtained. In order to ensure the accuracy of quantitative analysis, the present invention obtains the contribution rate of each pollutant in each priority control pollutant group by analyzing the concentration index of each pollutant in each priority control pollutant group and the comprehensive concentration index of each priority control pollutant group, and then combines the weights to obtain the comprehensive contribution rate of each priority control pollutant group. Finally, the final water environment health value is obtained by combining the above parameters. This can not only effectively ensure the accuracy of quantitative analysis, but also effectively ensure the accuracy of early warning level setting, and thus more accurate and scientific early warning information can be obtained;

[0050] In addition, the quantitative processing method of the present invention can not only effectively ensure the scientificity and accuracy of pollutant tracing, but also more conveniently and quickly locate pollutants, and can effectively avoid misjudgment and missed judgment. This provides a powerful tool and technical support for environmental protection departments and relevant regulatory agencies, helps to take effective treatment measures in a timely manner, reduce the occurrence of environmental pollution incidents, protect water resources, ensure public health, and provide data support for formulating more scientific and accurate environmental management policies. Brief Description of the Drawings

[0051] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0052] Figure 1 is a flowchart of a method for detecting typical pollutants in the water environment provided by an embodiment of the present invention;

[0053] Figure 2 is a framework diagram of a system for detecting typical pollutants in the water environment provided by an embodiment of the present invention. Detailed Embodiments

[0054] To make the purpose, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art without creative efforts based on the embodiments of the present invention belong to the scope protected by the present invention.

[0055] Example 1: AsFigure 1 As shown in Figure 1 , the present invention provides a method for detecting typical pollutants in water environment, comprising the following steps:

[0056] Step S1: Qualitatively identify the priority controlled pollutant groups in the water environment through multiple portable Raman spectrometers, collect the pollutant data in each priority controlled pollutant group and perform preprocessing, and the pollutant data includes concentration data;

[0057] It should be noted that regarding the portable Raman spectrometers mentioned above, multiple portable Raman spectrometers with high sensitivity and high resolution are selected. The water sampling equipment includes but is not limited to water samplers, filtration devices, sample bottles, etc.; in this embodiment, the following several typical priority controlled pollutant groups are selected for detection: organophosphorus pesticides: including but not limited to pollutants such as fenitrothion, profenofos, omethoate, etc.; polycyclic aromatic hydrocarbons: including but not limited to pollutants such as anthracene, pyrene, naphthalene, etc.; organic dyes: including but not limited to pollutants such as malachite green, rhodamine 6G, etc.; heavy metals: including but not limited to pollutants such as pentavalent arsenic, antimony, etc.

[0058] The following are the specific detection steps in this embodiment:

[0059] I. Sample collection;

[0060] Sampling point selection: According to the characteristics of the water body and the distribution of pollution sources, select multiple representative sampling points. For example, at different cross-sections of rivers, different regions of lakes, the outlet of sewage treatment plants, etc.;

[0061] Sampling method: Use a water sampler to collect a certain volume of water sample (usually 1 liter) at each sampling point, and separately fill the water samples into clean sample bottles. For samples that need to be filtered on-site, use a 0.45-micron filter membrane for filtration.

[0062] II. Qualitative identification;

[0063] Raman spectrum measurement: Set the parameters of each portable Raman spectrometer, such as laser wavelength (785 nm), integration time (5 seconds), scanning times (3 times), and then sequentially perform Raman spectrum measurement on the water samples in each sample bottle;

[0064] Data recording: After each measurement, record the Raman spectrum diagram and save the relevant data. Each Raman spectrometer should have a unique identifier so that the specific instrument and sampling point can be traced during subsequent data analysis.

[0065] III. Data preprocessing includes but is not limited to the following steps;

[0066] Background subtraction: Use data processing software to subtract the background signal from each Raman spectrum diagram to reduce noise interference;

[0067] Baseline correction: Perform baseline correction on the spectra after background subtraction to smooth the spectral curves;

[0068] Peak identification: Utilize a spectral library (such as the NIST spectral library) and built-in algorithms to automatically identify the characteristic peaks in the spectra and determine the types of possible pollutants;

[0069] Concentration calculation: For pollutants of known standard substances, the pollutant concentration in the actual sample can be calculated by comparing the Raman spectral intensities of the standard samples. For unknown substances, quantitative analysis methods such as internal standard method or external standard method can be used for concentration estimation;

[0070] Data standardization: Standardize all the preprocessed data to ensure the consistency and comparability of data between different instruments.

[0071] Regarding the above pollutant data, it mainly includes the concentration data of pollutants. For organophosphorus pesticides, record the concentration data of pollutants such as fenitrothion, profenofos, omethoate, etc. at each sampling point; for polycyclic aromatic hydrocarbons, record the concentration data of pollutants such as anthracene, pyrene, naphthalene, etc. at each sampling point; for organic dyes, record the concentration data of pollutants such as malachite green, rhodamine 6G, etc. at each sampling point; for heavy metals, record the concentration data of pollutants such as pentavalent arsenic, antimony, etc. at each sampling point.

[0072] Step S2: Transmit the pollutant data of each priority control pollutant group after pretreatment to the environmental pollutant detection cloud platform through a wireless network, and analyze it by the environmental pollutant detection cloud platform to obtain the water environment health value;

[0073] Step S2a: Analyze the pollutant concentration of the pollutant data of each priority control pollutant group after pretreatment by the environmental pollutant detection cloud platform to obtain the concentration index of each pollutant in each priority control pollutant group;

[0074] Step S2a1: Through the environmental pollutant detection cloud platform, call the concentration peak value of each pollutant in each priority control pollutant group;

[0075] It should be noted that in step S1, the pollutant data in each priority control pollutant group has been collected and preprocessed by multiple portable Raman spectrometers, and these data have been stored in the database of the environmental pollutant detection cloud platform. Subsequently, the environmental pollutant detection cloud platform calls the concentration data of each pollutant in each priority control pollutant group from the database through the API interface or database query statement;

[0076] Step S2a2: Obtain the concentration standard value of each pollutant in each priority control pollutant group;

[0077] It should be noted that the concentration standard values of each pollutant in each priority control pollutant group need to be obtained according to the water quality standards issued by the local environmental protection department to ensure the consistency and reliability of the data;

[0078] Step S2a3: Obtain the concentration index of each pollutant in each priority control pollutant group according to the concentration peak value of each pollutant in each priority control pollutant group and the concentration standard value of each pollutant in each priority control pollutant group;

[0079] Among them, the calculation formula for obtaining the concentration index of each pollutant in each priority control pollutant group is:

[0080] ;

[0081] Among them, represents the concentration index of the j-th pollutant in the i-th priority control pollutant group; represents the concentration peak value of the j-th pollutant in the i-th priority control pollutant group; represents the concentration standard value of the j-th pollutant in the i-th priority control pollutant group;

[0082] Step S2b: Obtain the comprehensive concentration index of each priority control pollutant group according to the concentration index of each pollutant in each priority control pollutant group;

[0083] Step S2b1: Through the environmental pollutant detection cloud platform, call the concentration data of each pollutant in at least two priority control pollutant groups, and perform averaging processing to obtain the average concentration data of each pollutant in each priority control pollutant group, and obtain the standard deviation of the concentration data of each pollutant in each priority control pollutant group according to the average concentration data;

[0084] Step S2b2: Analyze the degree of influence of each pollutant in each priority control pollutant group on water environmental pollution, and assign weights to each pollutant in each priority control pollutant group according to the analysis results;

[0085] It should be noted that for the impact degree analysis, first, relevant literature and research reports are consulted to understand the impact degree of each pollutant in each priority control pollutant group on water environment pollution. For example, organophosphorus pesticides are highly toxic and have a serious impact on aquatic organisms; polycyclic aromatic hydrocarbons are carcinogenic substances and are harmful to human health in the long term; organic dyes are difficult to degrade and have a long-term impact on the water ecosystem; heavy metals have strong accumulation and pose a persistent hazard to aquatic organisms and human health. Subsequently, experts in the field of environmental science are invited to evaluate and discuss the impact degree of each pollutant in each priority control pollutant group. Then, combining the literature research and expert opinions, a quantitative analysis of the impact degree of each pollutant in each priority control pollutant group can be carried out. The following methods can be used: Preferably, the analytic hierarchy process is adopted: a hierarchical structure model is constructed, and the importance weights of each pollutant are determined through a pairwise comparison matrix. The analytic hierarchy process mainly includes the following three steps: First, a hierarchical structure model is constructed, including the target layer such as the water environment pollution layer, the criterion layer such as the above-identified priority control pollutant groups: organophosphorus pesticides, polycyclic aromatic hydrocarbons, organic dyes, heavy metals, etc., and the scheme layer such as each pollutant included in each priority control pollutant group. Subsequently, through the pairwise comparison matrix, the relative importance between each layer is determined. Finally, the eigenvector and consistency test are calculated to obtain the final weight.

[0086] Step S2b3: Obtain the comprehensive concentration index of each priority control pollutant group according to the average concentration data of each pollutant in each priority control pollutant group, the standard deviation of the concentration data of each pollutant in each priority control pollutant group, the weight of each pollutant in each priority control pollutant group, and the concentration index of each pollutant in each priority control pollutant group.

[0087] Among them, the calculation formula for obtaining the comprehensive concentration index of each priority control pollutant group is:

[0088] ;

[0089] Among them, represents the comprehensive concentration index of the i-th priority control pollutant group; represents the average concentration data of the j-th pollutant in the i-th priority control pollutant group; represents the weight of the j-th pollutant in the i-th priority control pollutant group; represents the concentration index of the j-th pollutant in the i-th priority control pollutant group; k represents the adjustment coefficient used to balance the relationship between the average concentration and the concentration fluctuation; represents the standard deviation of the concentration data of the j-th pollutant in the i-th priority control pollutant group; represents the number of pollutants in the i-th priority control pollutant group;

[0090] Step S2c: Compare the concentration index of each pollutant in each priority control pollutant group with the comprehensive concentration index of each priority control pollutant group to obtain the contribution rate of each pollutant in each priority control pollutant group.

[0091] Among them, the calculation formula for obtaining the contribution rate of each pollutant in each priority control pollutant group is:

[0092] ;

[0093] Among them, R ij represents the contribution rate of the j-th pollutant in the i-th priority control pollutant group; I cij represents the concentration index of the j-th pollutant in the i-th priority control pollutant group; I ci represents the comprehensive concentration index of the i-th priority control pollutant group.

[0094] Step S2d: Obtain the comprehensive contribution rate of each priority control pollutant group according to the contribution rate of each pollutant in each priority control pollutant group.

[0095] Among them, the calculation formula for obtaining the comprehensive contribution rate of each priority control pollutant group is:

[0096] ;

[0097] Among them, R ci represents the comprehensive contribution rate of the i-th priority control pollutant group; R ij represents the contribution rate of the j-th pollutant in the i-th priority control pollutant group; W ij represents the weight of the j-th pollutant in the i-th priority control pollutant group; n i represents the number of pollutants in the i-th priority control pollutant group.

[0098] Step S2e: Obtain the water environment health value according to the concentration index of each pollutant in each priority control pollutant group, the comprehensive concentration index of each priority control pollutant group, the contribution rate of each pollutant in each priority control pollutant group, and the comprehensive contribution rate of each priority control pollutant group.

[0099] Among them, the calculation formula for obtaining the water environment health value is:

[0100] ;

[0101] Among them, H represents the water environment health value; I ci represents the comprehensive concentration index of the i-th priority control pollutant group; I cij represents the concentration index of the j-th pollutant in the i-th priority control pollutant group; R ij represents the contribution rate of the j-th pollutant in the i-th priority control pollutant group; R cirepresents the comprehensive contribution rate of the i-th priority control pollutant group; m represents the total number of priority control pollutant groups; n i represents the number of pollutants in the i-th priority control pollutant group;

[0102] Step S3: Set at least two thresholds for the water environment health value, divide the water environment health value through the thresholds, and determine the water environmental pollution level according to the division result;

[0103] The thresholds include a first threshold, a second threshold, a third threshold, a fourth threshold, and a fifth threshold; when the water environment health value is less than the first threshold, the water environmental pollution level is determined to be level one; when the water environment health value is greater than or equal to the first threshold and less than the second threshold, the water environmental pollution level is determined to be level two; when the water environment health value is greater than or equal to the second threshold and less than the third threshold, the water environmental pollution level is determined to be level three; when the water environment health value is greater than or equal to the third threshold and less than the fourth threshold, the water environmental pollution level is determined to be level four; when the water environment health value is greater than or equal to the fourth threshold and less than the fifth threshold, the water environmental pollution level is determined to be level five; when the water environment health value is greater than or equal to the fifth threshold, the water environmental pollution level is determined to be level six;

[0104] Step S4: Set the water environment warning level according to the water environmental pollution level, trace the pollutants in the water environment according to the warning level, and adopt the water environment restoration strategy for the tracing result;

[0105] It should be noted that regarding the pollutant tracing, the water environmental pollution level should be traced according to the warning level, then the water environment health value should be determined according to the water environmental pollution level, then the priority control pollutant group with the highest comprehensive contribution rate in the calculation process of the water environment health value should be called, and then the pollutants ranked top N in terms of contribution rate should be determined from this priority control pollutant group. At the same time, the pollutants ranked top N in terms of contribution rate in the remaining priority control pollutant groups should be confirmed. Subsequently, these pollutants ranked top N should be integrated and targeted water environment restoration strategies should be adopted. Of course, it is preferable that when there is a low comprehensive contribution rate and it will not affect the finally calculated water environment health value, this impact means that when the finally calculated water environment health value is judged through the threshold, whether the priority control pollutant group with a low comprehensive contribution rate participates in the calculation of the water environment health value or not, it will not cause the water environment health value to deviate from the current threshold range, that is, it will not change the current water environmental pollution level. For example, if it always remains between the third threshold and the fourth threshold, then there is no need to trace the pollutants in this priority control pollutant group. This will not only not affect the final treatment of the water environment, but also can effectively accelerate the formulation of the water environment restoration strategy. Of course, it is further considered that the pollutant with the highest ranking, that is, the pollutant with the highest contribution rate, in this priority control pollutant group with a low comprehensive contribution rate can also be targeted and included in the formulation of the final water environment restoration strategy. In this way, it can also more scientifically, effectively and comprehensively control water environmental pollution.

[0106] Example 2: As Figure 2 shown, the present invention also proposes a detection system for typical water environment pollutants, which executes a detection method for typical water environment pollutants as described above, and includes the following modules:

[0107] Data acquisition and preprocessing module: It is used to qualitatively identify priority control pollutant groups in the water environment through multiple portable Raman spectrometers, collect pollutant data in each priority control pollutant group and perform preprocessing, and the pollutant data includes concentration data;

[0108] Analysis and calculation module: Connected to the data acquisition and preprocessing module, it is used to transmit the pollutant data of each priority control pollutant group after preprocessing to the environmental pollutant detection cloud platform through a wireless network, and the environmental pollutant detection cloud platform performs analysis to obtain the water environment health value;

[0109] Threshold determination module: Connected to the analysis and calculation module, it is used to set at least two thresholds for the water environment health value, divide the water environment health value through the thresholds, and determine the water environment pollution level according to the division result;

[0110] Early warning module: Connected to the threshold determination module, it is used to set the water environment early warning level according to the water environment pollution level, trace the pollutants in the water environment according to the early warning level, and adopt a water environment restoration strategy for the tracing result.

[0111] It should be noted that the terms used in the present invention are only for describing specific embodiments and do not limit the scope of the present application. As shown in the specification of the present invention, unless the context clearly indicates an exception, words such as "a", "an", "one" and / or "the" are not specifically singular and may also include plural. The term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method or device. Without further limitation, an element defined by the statement "including a..." does not exclude the existence of another identical element in the process, method or device including the element.

[0112] It should also be noted that the orientation or positional relationship indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention. Unless otherwise clearly specified and defined, terms such as "installed", "connected", "coupled" 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, an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0113] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or equivalently replace some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the technical solutions of the embodiments of the present invention.

Claims

1. A method for detecting typical pollutants in water environment, characterized in that: The following steps are involved: Step S1, qualitatively identifying priority pollutant groups in the water environment by using multiple portable Raman spectrometers, and collecting pollutant data in each priority pollutant group and performing preprocessing, wherein the pollutant data includes concentration data; Step S2: transmitting the pollutant data of each priority pollutant group after pre-processing to the environmental pollutant detection cloud platform through a wireless network, and the environmental pollutant detection cloud platform performs analysis to obtain the water environment health value; Step S2a, performing pollution concentration analysis on the pollutant data of each priority-controlled pollutant group after pre-processing through the environmental pollutant detection cloud platform to obtain the concentration index of each pollutant in each priority-controlled pollutant group; Step S2b, obtaining a comprehensive concentration index of each priority controlled pollutant group according to the concentration index of each pollutant in each priority controlled pollutant group; Step S2c, comparing the concentration index of each pollutant in each priority controlled pollutant group with the comprehensive concentration index of each priority controlled pollutant group to obtain the contribution rate of each pollutant in each priority controlled pollutant group; Step S2d, obtaining the comprehensive contribution rate of each priority-controlled pollutant group according to the contribution rate of each pollutant in each priority-controlled pollutant group; Step S2e, obtaining the water environment health value according to the concentration index of each pollutant in each priority controlled pollutant group, the comprehensive concentration index of each priority controlled pollutant group, the contribution rate of each pollutant in each priority controlled pollutant group, and the comprehensive contribution rate of each priority controlled pollutant group; Step S3, setting at least two thresholds for the water environment health value, and dividing the water environment health value by the thresholds, and determining the water environment pollution level according to the division results; Step S4: setting a water environment warning level according to the water environment pollution level, tracing the source of pollutants in the water environment according to the warning level, and adopting a water environment restoration strategy based on the tracing results.

2. The method for detecting typical pollutants in water environment according to claim 1, characterized in that: The environmental pollutant detection cloud platform performs pollution concentration analysis on the pollutant data of each priority controlled pollutant group after pre-processing to obtain the concentration index of each pollutant in each priority controlled pollutant group, including: Step S2a1, calling the peak concentration of each pollutant in each priority pollutant group through the environmental pollutant detection cloud platform; Step S2a2, obtaining the concentration standard value of each pollutant in each priority controlled pollutant group; Step S2a3, obtaining a concentration index of each pollutant in each priority-controlled pollutant group according to the concentration peak value of each pollutant in each priority-controlled pollutant group and the concentration standard value of each pollutant in each priority-controlled pollutant group; The calculation formula of concentration index is: ； in, Represents the concentration index of the jth pollutant in the i-th priority controlled pollutant group; Represents the peak concentration of the jth pollutant in the i-th priority controlled pollutant group; Represents the concentration standard value of the jth pollutant in the ith priority controlled pollutant group.

3. The method for detecting typical pollutants in water environment according to claim 1, characterized in that: The comprehensive concentration index of each priority controlled pollutant group is obtained according to the concentration index of each pollutant in each priority controlled pollutant group, including: Step S2b1: through the environmental pollutant detection cloud platform, call the concentration data of each pollutant in at least two priority controlled pollutant groups, and perform averaging processing to obtain the average concentration data of each pollutant in each priority controlled pollutant group, and obtain the standard deviation of the concentration data of each pollutant in each priority controlled pollutant group according to the average concentration data; Step S2b2: Analyze the impact of each pollutant in each priority pollutant group on water environment pollution, and assign a weight to each pollutant in each priority pollutant group according to the analysis results; Step S2b3, according to the average concentration data of each pollutant in each priority controlled pollutant group, the standard deviation of the concentration data of each pollutant in each priority controlled pollutant group, the weight of each pollutant in each priority controlled pollutant group, and the concentration index of each pollutant in each priority controlled pollutant group, obtain the comprehensive concentration index of each priority controlled pollutant group.

4. The method for detecting typical pollutants in water environment according to claim 3, characterized in that: The calculation formula of the comprehensive concentration index is: ； in, Represents the comprehensive concentration index of the i-th priority controlled pollutant group; Represents the average concentration data of the jth pollutant in the i-th priority controlled pollutant group; Represents the weight of the jth pollutant in the i-th priority controlled pollutant group; represents the concentration index of the jth pollutant in the i-th priority controlled pollutant group; k represents the adjustment coefficient, which is used to balance the relationship between the average concentration and the concentration fluctuation; Represents the standard deviation of the concentration data of the jth pollutant in the i-th priority controlled pollutant group; Represents the number of pollutants in the i-th priority controlled pollutant group.

5. The method for detecting typical pollutants in water environment according to claim 1, characterized in that: The calculation formula of the contribution rate is: ； Among them, R ij represents the contribution rate of the jth pollutant in the i-th priority controlled pollutant group; I cij Represents the concentration index of the jth pollutant in the i-th priority controlled pollutant group; I ci Represents the comprehensive concentration index of the i-th priority controlled pollutant group.

6. The method for detecting typical pollutants in water environment according to claim 1, characterized in that: The calculation formula of the comprehensive contribution rate is: ； Among them, R ci represents the comprehensive contribution rate of the i-th priority controlled pollutant group; R ij represents the contribution rate of the jth pollutant in the i-th priority controlled pollutant group; W ij represents the weight of the jth pollutant in the i-th priority pollutant group; n i Represents the number of pollutants in the i-th priority controlled pollutant group.

7. The method for detecting typical pollutants in water environment according to claim 1, characterized in that: The calculation formula of the health value is: ； Among them, H represents the water environment health value; I ci Represents the comprehensive concentration index of the i-th priority controlled pollutant group; I cij represents the concentration index of the jth pollutant in the i-th priority controlled pollutant group; R ij represents the contribution rate of the jth pollutant in the i-th priority controlled pollutant group; R ci represents the comprehensive contribution rate of the i-th priority-controlled pollutant group; m represents the total number of priority-controlled pollutant groups; n i Represents the number of pollutants in the i-th priority controlled pollutant group.

8. The method for detecting typical pollutants in water environment according to claim 1, characterized in that: The thresholds include a first threshold, a second threshold, a third threshold, a fourth threshold, and a fifth threshold; when the water environment health value is less than the first threshold, the water environment pollution level is determined to be level one; when the water environment health value is greater than or equal to the first threshold and less than the second threshold, the water environment pollution level is determined to be level two; when the water environment health value is greater than or equal to the second threshold and less than the third threshold, the water environment pollution level is determined to be level three; when the water environment health value is greater than or equal to the third threshold and less than the fourth threshold, the water environment pollution level is determined to be level four; when the water environment health value is greater than or equal to the fourth threshold and less than the fifth threshold, the water environment pollution level is determined to be level five; when the water environment health value is greater than or equal to the fifth threshold, the water environment pollution level is determined to be level six.

9. A detection system for typical pollutants in water environment, used to execute a detection method for typical pollutants in water environment according to any one of claims 1 to 8, characterized in that: The system comprises: Data acquisition and preprocessing module: used to qualitatively identify the priority pollutant groups in the water environment through multiple portable Raman spectrometers, and to collect pollutant data in each priority pollutant group and perform preprocessing, wherein the pollutant data includes concentration data; Analysis and calculation module: connected to the data acquisition and preprocessing module, used to transmit the pollutant data of each priority pollutant group after preprocessing to the environmental pollutant detection cloud platform through a wireless network, and the environmental pollutant detection cloud platform performs analysis to obtain the water environment health value; Threshold determination module: connected to the analysis and calculation module, used to set at least two thresholds for the water environment health value, and divide the water environment health value by the thresholds, and determine the water environment pollution level according to the division results; Early warning module: connected to the threshold determination module, used to set the water environment early warning level according to the water environment pollution level, trace the pollutants in the water environment according to the early warning level, and adopt a water environment restoration strategy based on the tracing results.

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