Method and device for screening new pollutants for priority control in water and storage medium

Abstract

The invention discloses an underwater priority control new pollutant screening method and device and a storage medium, and belongs to the technical field of water body monitoring and risk assesses.The method comprises the steps that new pollutant concentration levels are classified according to indexes to be subjected to graded quantitative score assignment, and the graded quantitative score assignment standard of each index is obtained; according to the test data corresponding to each index, obtaining the score of each index in the new pollutant by comparing with a grading quantitative score assignment standard; synthesizing to obtain a comprehensive toxicity risk value of the new pollutant; on the basis of an entropy method and in combination with the new pollutant environment concentration, the environment risk entropy value of the new pollutant is obtained through calculation; and on the basis of a matrix analysis method, constructing a comprehensive toxicity risk value-environment risk entropy value matrix, and determining new pollutants meeting a preset risk grade standard in the matrix as priority control new pollutants. Based on the comprehensive score, the entropy value and the matrix method, the defect that a single analysis method is incomplete can be overcome, and the new pollutant screening accuracy is improved.

Description

TECHNICAL FIELD

[0001] The application relates to a water priority control new pollutant screening method, device and storage medium, and belongs to the technical field of water body monitoring and risk assessment. BACKGROUND

[0002] New pollutants are paid great attention by the scientific community and managers at home and abroad. New pollutants have the characteristics of wide sources, various types and hidden risks. At present, a large number of new pollutants are detected in the water environment, and new types of new pollutants are continuously used, which brings great difficulties to the risk management of new pollutants. At present, the generally recognized way of new pollutant treatment is source control, and how to screen out new pollutants that need to be controlled is particularly important.

[0003] Firstly, the existing new pollutant screening method generally adopts a single analysis method, such as the patent with the publication number CN117455233A and the name of "a river and lake priority control new pollutant screening method based on multi-index and multi-medium comprehensive evaluation", which uses multiple indexes to evaluate all new pollutants, and the patent with the publication number CN119026898A and the name of "a water environment risk priority control antibiotic screening and evaluation method", which uses a matrix method. Due to the defect of the single analysis method, the new pollutant screening accuracy is not high. In addition, after the risk assessment of the new pollutants, the next step of screening the priority control new pollutants cannot be combined with the risk assessment. Finally, the existing priority evaluation chemical substance screening technology has unreasonable evaluation index setting, mainly screening through the physical and chemical and toxicity characteristics of the chemical substance, and cannot combine the risk level and other indexes generated in the actual environment of the chemical substance for screening. In addition, it can only be applied to part of the new pollutants, and the target object has insufficient applicability and poor applicability. SUMMARY

[0004] The technical problem to be solved by the application is to overcome the defects of the prior art and provide a water priority control new pollutant screening method, device and storage medium. Based on comprehensive scoring, entropy and matrix method, the defect of the single analysis method can be overcome, and the new pollutant screening accuracy can be improved. Further, the water priority control new pollutant screening method, device and storage medium have the advantages of full screening index, high accuracy and wider applicability.

[0005] To solve the above technical problems, the technical scheme adopted by the application is as follows:

[0006] In a first aspect, the application provides a water priority control new pollutant screening method, comprising the following steps:

[0007] Obtaining new pollutant information monitored in a river basin or enterprise water body, and concentration levels of the new pollutant in domestic and foreign literatures, using statistical methods to classify and quantitatively score the concentration levels of the new pollutant according to the index classification to obtain the grading quantitative scoring standard of each index;

[0008] According to the test data of each index in the new pollutant information, the grading quantitative scoring standard is used to obtain the score of each index in the new pollutant;

[0009] The scores of each index in the new pollutant are integrated to obtain the comprehensive toxicity risk value of the new pollutant;

[0010] Obtaining the new pollutant evaluation toxicity data collected or simulated by models, and based on the entropy method, the environmental risk entropy value of the new pollutant is calculated combined with the environmental concentration of the new pollutant;

[0011] Based on the matrix analysis method, a matrix of comprehensive toxicity risk value-environmental risk entropy value is constructed, and the new pollutants meeting the preset risk level standard in the matrix are determined as the priority control new pollutants.

[0012] The index classification specifically includes a health hazard primary index, an environmental hazard primary index, a persistence and bioaccumulation primary index, and an exposure primary index;

[0013] The health hazard primary index includes a carcinogenic secondary index, a reproductive toxicity secondary index, and a genetic toxicity secondary index;

[0014] The environmental hazard primary index includes an acute toxicity secondary index, a chronic toxicity secondary index, and a drug resistance secondary index;

[0015] The persistence and bioaccumulation primary index includes a persistence secondary index and a bioaccumulation secondary index;

[0016] The exposure primary index includes a detection rate secondary index and a detection concentration secondary index, or includes an enterprise industrial wastewater discharge secondary index and a new pollutant environmental concentration level secondary index.

[0017] The score of each primary index is obtained by weighting each secondary index in a proportional manner according to the weight, and the secondary index is scored according to different levels, and the highest score is 4 points.

[0018] The calculation of the comprehensive toxicity risk value includes:

[0019] Comprehensive toxicity risk value = (1),

[0020] Wherein, EX is the exposure index score, ES is the environmental hazard index score, HS is the environmental hazard index score, and PB is the persistence and bioaccumulation index score.

[0021] The formula for calculating the environmental risk entropy value is as follows:

[0022] (2),

[0023] Wherein RQ is the environmental risk entropy value, C is the detection concentration, and PNEC is the predicted no-effect concentration.

[0024] The predicted no-effect concentration PNEC is derived from the following formula:

[0025] , or (3),

[0026] Wherein EC50 is the maximum half-effect concentration, LC50 is the half-maximum lethal concentration, and AF is the evaluation factor.

[0027] The environmental risk entropy value RQ is divided into 4 levels according to RQ≥1, 0.1≤RQ<1, 0.01≤RQ<0.1 and 0≤RQ<0.01, and is scored as 4 points, 3 points, 2 points and 1 point respectively.

[0028] The matrix analysis method is used to construct a matrix of comprehensive toxicity risk value-environmental risk entropy value, and new pollutants meeting the preset risk level standard in the matrix are determined as priority control new pollutants, including: after the comprehensive toxicity risk value is converted into a percentage system, the 75th percentile score, the 50th percentile score, the 25th percentile score and the 0th percentile score are taken as four levels, and a matrix is established in combination with the four levels of the environmental risk entropy value RQ, four levels of high risk, medium risk, low risk or no risk are set, and new pollutants corresponding to high risk and medium risk are selected as priority control new pollutants in the environment.

[0029] In a second aspect, the present application provides a water priority control new pollutant screening device, comprising:

[0030] The grading quantification scoring module is used to obtain new pollutant information monitored in a river basin or enterprise water body, and concentration levels of the new pollutants in domestic and foreign literature corresponding to the new pollutants, and to grade and quantitatively score the concentration levels of the new pollutants according to index classification by using a statistical method to obtain grading quantification scoring standards for each index.

[0031] The scoring acquisition module is used to obtain scores of each index in the new pollutants according to test data corresponding to each index in the new pollutant information, and to compare the grading quantification scoring standards.

[0032] The scoring comprehensive module is used to comprehensively obtain a comprehensive toxicity risk value of the new pollutants by scoring each index in the new pollutants.

[0033] The environmental risk entropy calculation module is used to acquire toxicity assessment data of new pollutants collected from domestic and foreign literature or detected by model simulation. Based on the entropy method and combined with the environmental concentration of the new pollutant, the environmental risk entropy value of the new pollutant is calculated.

[0034] The matrix analysis module is used to construct a matrix of comprehensive toxicity risk value and environmental risk entropy value based on matrix analysis, and to identify new pollutants in the matrix that meet the preset risk level standards as priority new pollutants to be controlled.

[0035] Thirdly, the present invention provides a computer-readable storage medium having a computer program / instructions stored thereon, which, when executed by a processor, implements the aforementioned method for preferentially controlling new pollutants in water.

[0036] The beneficial effects of this invention are as follows: This invention provides a method, device, and storage medium for preferential control of new pollutants in water. First, by employing methods such as comprehensive scoring, entropy value analysis, and matrix analysis, it can overcome the shortcomings of single analysis methods and improve the accuracy of new pollutant screening. In addition, by comprehensively considering the hazards, exposure, and impact on the ecological environment of new pollutants, it classifies and scores multiple indicators such as the persistence and bioaccumulation of new pollutants, health hazards, environmental hazards, exposure, and ecological risks. At the same time, it can adjust the indicators for different types of new pollutants, thereby greatly improving the applicability and accuracy of the preferential control of new pollutant screening results. Attached Figure Description

[0037] Figure 1 This is a schematic flowchart of a method for preferentially controlling new pollutants in water according to the present invention. Detailed Implementation

[0038] The present invention will be further described below with reference to the accompanying drawings. The following embodiments are only used to illustrate the technical solution of the present invention more clearly, and should not be used to limit the scope of protection of the present invention.

[0039] Example 1

[0040] like Figure 1 As shown, this invention discloses a method for screening new pollutants for priority control in water, comprising the following steps:

[0041] Step 1: Obtain information on new pollutants detected in the water body of the basin or enterprise, as well as the concentration levels of the new pollutants in domestic and foreign literature. Use statistical methods to classify and quantify the concentration levels of the new pollutants according to the index classification, and obtain the classification and quantification scoring standards for each index.

[0042] For a certain type of new pollutants, first of all, the comprehensive toxicity risk index system is constructed combined with domestic and foreign literature, and four first-level indexes of health hazards, environmental hazards, persistence and bioaccumulation, and exposure of new pollutants are determined, and 9-10 second-level indexes under the first-level indexes are screened and determined. The classification data is obtained by collecting domestic and foreign authoritative websites or actual measurement and grading quantization, and the specific second-level index acquisition and grading requirements are as follows:

[0043] The health hazard index (HS) collects the classification levels of carcinogenicity, reproductive toxicity and mutagenicity from domestic and foreign authoritative agencies and related classification standards.

[0044] Among them, the carcinogenicity is assigned 4, 3, 2, 1 points according to the four levels of the ECHA Chemical Classification and Labeling Database classification standard; the reproductive toxicity is assigned 4, 3, 2, 1 points according to the four levels of the Chemical Classification and Labeling Standard (GB30000.24-2013) classification standard; the genetic toxicity is assigned 4, 3, 2, 1 points according to the four levels of the ECHA Chemical Classification and Labeling Database classification standard, and the index weight is calculated in an equal proportion.

[0045] For antibiotic new pollutants, acute toxicity, chronic toxicity and drug resistance are determined as second-level indexes under the environmental hazard index (ES), and if they are other types of new pollutants, only acute toxicity and chronic toxicity are considered under the environmental hazard index. Among them, the acute toxicity collects four classification levels from domestic and foreign authoritative agencies and related classification standards, and is assigned 4, 3, 2, 1 points; the chronic toxicity collects five classification levels from domestic and foreign authoritative agencies and related classification standards, and is assigned 4, 3, 2, 1, 0 points.

[0046] Drug resistance determines the detection rate and absolute abundance of antibiotic resistance genes as third-level indexes under this index. Antibiotic resistance gene monitoring is carried out by collecting surface water samples, then the water samples are pretreated by 0.22 μm filter membrane filtration, and high-throughput detection of antibiotic resistance genes is carried out by qPCR amplification. Among them, the detection rate is assigned points combined with the detection of resistance genes, and is assigned 4, 3, 2, 1, 0 points according to >75%, 50 (not including) ~75%, 25 (not including) ~50%, 0 (not including) ~25% grading; the absolute abundance combines the absolute abundance level of antibiotic resistance gene detection in domestic and foreign literature, and is assigned 4, 3, 2, 1 points according to the division of the 75th percentile, the 50th percentile, the 25th percentile and 0 into four levels. The weights of each level index are calculated in an equal proportion.

[0047] Persistent and bioaccumulative indicators (PB) collect three classification levels of two second-level indicators of persistence and bioaccumulation under the "Method for Determination of Persistent, Bioaccumulative and Toxic Substances and High Persistent and Bioaccumulative Substances" (GB / T 24782-2009). The three classification levels are assigned points according to 4, 2.67 and 1.33, and the second-level indicators are calculated in equal proportion.

[0048] The exposure indicator (EX) is obtained as follows: For new pollutants under river basin environmental monitoring, surface water samples are collected. The water sample is pretreated by filtering through a glass fiber filter (0.7 µm), taking 500 mL, adjusting the pH value to 3 with sulfuric acid, adding 0.25 g of EDTA disodium, mixing, and then extracting and enriching with an extraction column (CNW HLB, 200 mg / 6 mL). After activating the extraction column, 6 mL of methanol is used for extraction and elution. The eluate is evaporated to near dryness with nitrogen, and then dissolved with acetonitrile / water (1 / 1) + 0.1% formic acid to 0.5 mL. It is then filtered through a 0.22 µm hydrophilic PTFE filter and detected and analyzed by ultra-high performance liquid chromatography-triple quadrupole mass spectrometry (with an electrospray ion source) to obtain the exposure concentration. For new pollutants under enterprise wastewater monitoring, after monitoring and analyzing the enterprise wastewater samples, the exposure scenario can be constructed by combining the new pollutant discharge concentration and wastewater volume of the enterprise wastewater monitoring to predict the exposure concentration, supplement the missing points of the exposure and ecological risk assessment indicators, and improve the applicability of this method for screening complex media.

[0049] For new pollutants under water environmental monitoring, the second-level indicators for exposure are detection rate and detection concentration. Statistical analysis of the detection rate and detection concentration levels of each new pollutant in the environment improves the reliability of the classification results by combining domestic and foreign water body and reporting levels, achieving dual protection of reliability and accuracy in screening and controlling new pollutants in water bodies. The detection rate is classified according to >75%, 50 (not including) ~ 75%, 25 (not including) ~ 50%, 0 (not including) ~ 25%, and assigned points of 4, 3, 2, 1, 0. The detection concentration level is divided into five levels by taking more than the 75th percentile concentration, more than the 50th percentile concentration, more than the 25th percentile concentration, more than the 0th percentile concentration, and 0, and assigned points of 4, 3, 2, 1, 0. The second-level indicators are calculated in equal proportion.

[0050] For new pollutants under enterprise industrial wastewater detection, the second-level indicators for exposure are industrial wastewater discharge and environmental detection concentration. The industrial wastewater discharge is classified according to the 1-4 levels in the "Technical Guidelines for Environmental Impact Assessment Surface Water Environment" (HJ 2.3-2018) construction project evaluation levels (i.e., corresponding to wastewater volume Q ≥ 20000 m3 / d, 20000 m 3 / d > Q ≥ 200 m 3 / d, 200 m 3 / d > Q > 0 m 3 / d, Q = 0 m 3 / d) and quantifying the scores, with scores of 4, 3, 2, and 1, respectively. The environmental concentration is based on the concentration of new pollutants monitored at sewage treatment plants and background points. The exposure scenario selection is based on the distribution model of the water body, which is used for prediction and simulation. The simulated environmental concentration is referenced to the collected environmental concentration level grading scores.

[0051] Step two: According to the test data corresponding to each indicator in the new pollutant information, the grading and quantitative scoring standards are compared to obtain the scores of each indicator in the new pollutant. Specifically, the scores of the secondary indicators are obtained first, and then the weights of the secondary indicators are calculated by equal proportion to obtain the scores of the primary indicators.

[0052] Step three: The scores of each indicator in the new pollutant are integrated to obtain the comprehensive toxicity risk value of the new pollutant.

[0053] Specifically, the calculation of the comprehensive toxicity risk value includes:

[0054] Comprehensive toxicity risk value = (1),

[0055] Wherein, EX is the exposure indicator score, ES is the environmental hazard indicator score, HS is the environmental hazard indicator score, and PB is the persistence and bioaccumulation indicator score. After the calculation of the comprehensive toxicity risk value of each new pollutant, the values are sorted from large to small.

[0056] Step four: Obtain the new pollutant evaluation toxicity data collected from domestic and foreign literature or model simulation. Based on the entropy method, combined with the environmental concentration of the new pollutant, the environmental risk entropy value of the new pollutant is calculated.

[0057] The calculation formula of the environmental risk entropy value is as follows:

[0058] (2),

[0059] Wherein, RQ is the environmental risk entropy value, C is the detection concentration (ng / L), and PNEC is the predicted no-effect concentration (ng / L).

[0060] The predicted no-effect concentration PNEC is derived from the following formula:

[0061] , or (3),

[0062] Wherein EC50 is the maximum half-effect concentration (ng / L), obtained by domestic and foreign literature or authoritative model simulation; LC50 is the half maximum lethal concentration (ng / L), obtained by domestic and foreign literature or authoritative model simulation; AF is the evaluation factor, selected according to the amount of short-term and long-term test data of biological categories.

[0063] Step five, based on matrix analysis method, a matrix of comprehensive toxicity risk value-environmental risk entropy value is constructed to determine new pollutants in the matrix that meet the preset risk level standard.

[0064] The RQ value is divided into 4 levels according to RQ≥1, 0.1≤RQ<1, 0.01≤RQ<0.1, 0≤RQ<0.01, and is scored as 4, 3, 2, and 1.

[0065] The original maximum value of the comprehensive toxicity risk value is 4*(4+4+4)=48, and the comprehensive toxicity risk score is converted into percentage, i.e. the original value is multiplied by 100 / 48. If the original score is 24, it becomes 24*100 / 48=50 after conversion into percentage. The 75th percentile score, the 50th percentile score, the 25th percentile score, and the 0th percentile score are divided into 4 levels.

[0066] Finally, the 4 levels of the comprehensive toxicity risk value and the 4 levels of the environmental risk value, i.e. the RQ value, are established into a matrix (comprehensive toxicity risk value, RQ score) and analyzed, and 4 levels of high, medium, low or no risk are set, and finally the high-risk and medium-risk chemicals are selected as the new pollutants to be preferentially controlled in the environment.

[0067] The present application first adopts comprehensive scoring-entropy-matrix analysis method, which can overcome the defects of single analysis method, improve the accuracy of new pollutant screening, and comprehensively consider the harm, exposure and influence on ecological environment of new pollutants, grade and score the multi-indexes of new pollutants such as persistence and bioaccumulation, health hazards, environmental hazards, exposure and ecological risk, and adjust the indexes for different types of new pollutants, so that the applicability and accuracy of the new pollutant screening results are greatly improved.

[0068] Example 2

[0069] The present embodiment is based on the specific application of embodiment 1, in a certain river basin environment, 6 categories of 29 kinds of antibiotics in water are monitored, 24 kinds are detected, and 318 antibiotic resistance gene fragments on the filter membrane are quantitatively analyzed. The classification level of 8 secondary indicators of health hazard index (HS), environmental hazard index (ES), persistence and biological accumulation index (PB) of 6 categories of 24 kinds of antibiotics is collected, and the score is assigned according to the grading standard. The literature collects the concentration level of antibiotics and the total absolute abundance level of antibiotic resistance genes in rivers, lakes and nearshore areas at home and abroad, among which the 75th percentile, 50th percentile (median), 25th percentile concentration of a single antibiotic is 40 ng / L, 25 ng / L, 15 ng / L respectively; the 75th percentile, 50th percentile (median), 25th percentile concentration of antibiotic resistance genes is 104copies / g, 105.5copies / g, 106.5copies / g respectively, the two indicators are graded according to the percentile and scored. The concentration level of antibiotics and the detection rate of absolute abundance of antibiotic resistance genes are graded and scored according to statistical methods. The above indicators are calculated by the comprehensive scoring method of grading and scoring to obtain the 24 kinds of comprehensive toxicity risk value score ranking, which is converted to percentage after percentage conversion, and according to statistical methods, the 75th percentile (14.5 and above), 50th percentile (7.5 and above), 25th percentile (5.5 and above), 0th percentile (0 and above) are divided into 4 levels. Using the entropy method, the environmental risk of the 24 kinds of antibiotics detected is evaluated, in which the PNEC data is obtained by literature and model simulation calculation, the RQ value of a single antibiotic is calculated, and the RQ value is divided into 4 levels according to RQ≥1, 0.1≤RQ<1, 0.01≤RQ<0.1, 0≤RQ<0.01, and scored as 4, 3, 2, 1. Based on the level of comprehensive toxicity risk value and the level of RQ value, a matrix (comprehensive toxicity risk value, RQ value) is established and analyzed, and four levels of high, medium, low or no risk are set, in which the high risk value is (5.5 and above, 4), (14.5 and above, 3); the medium risk value is (0 above, 4), (5.5-14.5, 3), (7.5 above, 2), (1, 14.5 and above); the low risk value is (0~20, 3), (0~25, 2), (0-40, 1), and finally 11 kinds of high and medium risk antibiotics are selected as the priority control antibiotics in the environment, and the final screening results are shown in Table 1.

[0070] Table 1 List of priority control antibiotics in a certain river basin environment

[0071]

[0072] The 11 antibiotics screened by the priority control antibiotic list screening method constructed according to the application are compared with the antibiotics screened by the existing domestic and foreign control lists and literatures, as shown in Table 2. Seven substances in the priority control antibiotic list are identified and screened by the domestic and foreign list directories and literatures, further proving the rationality of the screening and evaluation method.

[0073] Table 2 Comparison of the environmental priority control antibiotic list of a certain river basin with the existing domestic and foreign lists and literature screening lists

[0074]

[0075] Example 3

[0076] This example is based on Example 1. A certain sewage plant mainly collects wastewater from the printing and dyeing industry, and the tail water is directly discharged into the river. The exposed secondary indicators are the environmental exposure concentration (C) and the wastewater discharge of the sewage plant (Q). Regarding the environmental exposure concentration, a complete mixing model of the river is constructed for prediction. The background perfluorinated compound concentration is measured in water samples 500 meters upstream of the river, and 17 perfluorinated compounds in the tail water of the sewage plant are measured. A total of 11 perfluorinated compounds are detected. The wastewater discharge of the sewage plant and the flow of the receiving river are combined with the EIA or project file to obtain the current wastewater discharge Qtotal=32000m 3 / d. The collected flow of the receiving river is 224640m 3Toxicology data based on domestic and foreign authoritative website and model simulation 11 kinds of health hazard index (HS), environmental hazard index (ES), persistence and bioaccumulation index (PB) involved in the classification grade of 7 kinds of secondary indicators, and according to the grading standard. Literature collected domestic and foreign river, lake perfluorinated compound concentration level data, wherein the 75th percentile, 50th percentile (median), 25th percentile concentration of a single perfluorinated compound is 12.2 ng / L, 9.0 ng / L, 6.6 ng / L, 4.7 ng / L, the detection rate is greater than 75%, 50%, 25%, 0%, and 0 is set, and the two indexes are scored. The above indexes are calculated by the comprehensive scoring method of grading and scoring to obtain the 14 kinds of comprehensive toxicity risk score ranking, and the percentage is converted, and according to the statistical method, greater than the 75th percentile (19 and above), greater than the 50th percentile (15-19), greater than the 25th percentile (13-15), greater than or equal to 0 (0-13) are divided into 4 levels. The entropy method is used to evaluate the environmental risk of the 14 kinds of perfluorinated compounds detected, and the PNEC data is obtained by literature and model simulation calculation. The RQ value of a single antibiotic is calculated, and the RQ value is divided into 4 levels according to RQ≥1, 0.1≤RQ<1, 0.01≤RQ<0.1, 0≤RQ<0.01, and scored according to 4, 3, 2, 1. Based on the level of comprehensive toxicity risk value and the level of RQ value, a matrix (comprehensive toxicity risk score, RQ score) is established and analyzed, and four levels of high, medium, low or no risk are set, wherein the high risk value is (19 and above, 3-4); the medium risk value is (0-13, 4), (13-19, 3), (15 and above, 2), (19 and above, 1); the low risk value is (0-19, 1), (0-15, 2), (0-13, 3), and finally 4 kinds of high and medium risk perfluorinated compounds are screened out as the priority control perfluorinated compounds in the environment of the region, and the final screening result is shown in table 3.

[0077] Table 3 List of priority control perfluorinated compounds in water of a certain industry

[0078]

[0079] The 4 kinds of perfluorinated compounds screened out by the priority control new pollutant list screening method constructed by the application are compared with the existing control list and the literature screening list, as shown in table 4, and 3 kinds of priority control perfluorinated compounds in the list are identified and screened by the domestic and foreign list and literature, which further proves the rationality of the screening and evaluation method.

[0080] Table 4 Comparison of priority control perfluorinated compound list in water of a certain industry with existing domestic and foreign list and literature screening list

[0081]

[0082] Embodiment 4

[0083] The embodiment discloses a device for screening priority control of new pollutants in water, comprising:

[0084] The hierarchical quantitative scoring module is configured to acquire new pollutant information monitored in a river basin or water body of an enterprise, and concentration levels of the new pollutants in domestic and foreign literatures, and to perform hierarchical quantitative scoring on the concentration levels of the new pollutants according to indexes by using a statistical method, so as to obtain hierarchical quantitative scoring standards of the indexes.

[0085] The scoring acquisition module is configured to acquire scores of the indexes in the new pollutants by comparing test data corresponding to the indexes in the new pollutant information with the hierarchical quantitative scoring standards.

[0086] The scoring synthesis module is configured to synthesize the scores of the indexes in the new pollutants to obtain a comprehensive toxicity risk value of the new pollutants.

[0087] The environmental risk entropy value calculation module is configured to acquire toxicity evaluation data of the new pollutants collected from domestic and foreign literatures or simulated by a model, and to calculate an environmental risk entropy value of the new pollutants based on an entropy value method and in combination with an environmental concentration of the new pollutants.

[0088] The matrix analysis module is configured to construct a matrix of the comprehensive toxicity risk value-environmental risk entropy value based on a matrix analysis method, and to determine new pollutants meeting preset risk level standards in the matrix as priority control new pollutants.

[0089] Embodiment 5

[0090] The embodiment discloses a computer readable storage medium, which stores a computer program / instruction, and the computer program / instruction is executed by a processor to implement any one of the water priority control new pollutant screening methods in embodiments 1 to 3.

[0091] The present application is described with reference to flowcharts and / or block diagrams according to the method, device (system), and computer program product of the embodiments of the present application. It should be understood that each flow and / or block in the flowcharts and / or block diagrams, and the combination of the flows and / or blocks in the flowcharts and / or block diagrams can be implemented by computer program instructions. These computer program instructions can be provided to the processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing devices to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing devices produce a device that implements the functions specified in the flowcharts and / or block diagrams. Figure 1 The device that implements the functions specified in one flow or multiple flows and / or blocks Figure 1 one block or multiple blocks.

[0092] These computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture including instructions which implement the Figure 1 function specified in the flow or flows and / or blocks Figure 1 of the block or blocks.

[0093] These computer program instructions can also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions that are executed on the computer or other programmable apparatus provide steps for implementing the Figure 1 function specified in the flow or flows and / or blocks Figure 1 of the block or blocks.

[0094] The above description is only preferred embodiments of the present application, it should be pointed out that for those skilled in the art, without departing from the principles of the present application, can make a number of improvements and refinements, these improvements and refinements should also be considered as the protection scope of the present application.

Claims

1. A method for screening new pollutants for in-water preferential control, characterized by: The method comprises the following steps: obtaining new pollutant information monitored in a river basin or an enterprise water body and concentration levels of the new pollutant in domestic and foreign literatures, and using a statistical method to classify and quantitatively score the concentration levels of the new pollutant according to index classification to obtain grading quantitative scoring standards of each index; obtaining scores of each index in the new pollutant by comparing test data of each index in the new pollutant information with the grading quantitative scoring standards; comprehensively obtaining a comprehensive toxicity risk value of the new pollutant by combining the scores of each index in the new pollutant; obtaining new pollutant evaluation toxicity data collected or simulated by a model, and calculating an environmental risk entropy value of the new pollutant based on an entropy method and in combination with an environmental concentration of the new pollutant; based on a matrix analysis method, constructing a matrix of the comprehensive toxicity risk value-environmental risk entropy value, and determining new pollutants in the matrix that meet preset risk level standards as priority control new pollutants.

2. The water prioritization control emerging contaminant screening method of claim 1, wherein: The index classification specifically comprises a health hazard primary index, an environmental hazard primary index, a persistence and bioaccumulation primary index, and an exposure primary index. The health hazard primary index comprises carcinogenicity secondary indexes, reproductive toxicity secondary indexes, and genetic toxicity secondary indexes. The environmental hazard primary index comprises acute toxicity secondary indexes, chronic toxicity secondary indexes, and drug resistance secondary indexes. The persistence and bioaccumulation primary index comprises persistence secondary indexes and bioaccumulation secondary indexes. The exposure primary index comprises detection rate secondary indexes and detection concentration secondary indexes, or comprises enterprise industrial wastewater discharge secondary indexes and new pollutant environmental concentration level secondary indexes.

3. The water prioritization control emerging contaminant screening method of claim 2, wherein: Scores of each primary index are obtained by weighting each secondary index according to a weight in a proportional manner, and the secondary indexes are scored according to different levels, wherein the highest score is 4 points.

4. The water prioritization control emerging contaminant screening method of claim 3, wherein: The calculation of the comprehensive toxicity risk value comprises: Overall toxicity risk value = (1), wherein EX is an exposure index score, ES is an environmental hazard index score, HS is an environmental hazard index score, and PB is a persistence and bioaccumulation index score.

5. The water prioritization control emerging contaminant screening method of claim 4, wherein: The calculation formula of the environmental risk entropy value is as follows: （2）， wherein RQ is the environmental risk entropy value, C is a detection concentration, and PNEC is a predicted no effect concentration.

6. The water-based preferential control of emerging contaminants screening method of claim 5, wherein: The predicted no effect concentration PNEC is derived from the following formula: , or (3), wherein EC50 is a maximum half-effect concentration, LC50 is a half maximum lethal concentration, and AF is an evaluation factor.

7. The method of screening for new pollutants for priority control in water according to claim 5, wherein: The environmental risk entropy value RQ is divided into four levels according to RQ≥1, 0.1≤RQ<1, 0.01≤RQ<0.1, and 0≤RQ<0.01, and is scored as 4 points, 3 points, 2 points, and 1 point, respectively.

8. The water prioritization control emerging contaminant screening method of claim 7, wherein: The matrix analysis method is used to construct a matrix of the comprehensive toxicity risk value and the environmental risk entropy value, and new pollutants meeting preset risk level standards in the matrix are determined as the priority control new pollutants, including: after the comprehensive toxicity risk value is converted into a percentage system, the 75th percentile score, the 50th percentile score, the 25th percentile score, and the 0th percentile score are divided into four levels, and the matrix is established in combination with the four levels of the environmental risk entropy value RQ, four levels of high risk, medium risk, low risk, or no risk are set, and the new pollutants corresponding to the high risk and the medium risk are selected as the priority control new pollutants in the environment.

9. A water in preference control of new pollutants screening device characterized by: Comprises: The hierarchical quantification scoring module is used to obtain new pollutant information monitored in a river basin or enterprise water body and concentration levels of the new pollutants in domestic and foreign literature, and a statistical method is used to classify and quantitatively score the concentration levels of the new pollutants according to indexes to obtain hierarchical quantification scoring standards of the indexes; The scoring acquisition module is used to obtain scores of each index in the new pollutants by comparing test data corresponding to each index in the new pollutant information with the hierarchical quantification scoring standards; The scoring synthesis module is used to synthesize the scores of each index in the new pollutants to obtain a comprehensive toxicity risk value of the new pollutants; The environmental risk entropy value calculation module is used to obtain new pollutant evaluation toxicity data collected from domestic and foreign literature or simulated by a model, and calculate an environmental risk entropy value of the new pollutants based on an entropy value method and in combination with an environmental concentration of the new pollutants; The matrix analysis module is used to construct a matrix of the comprehensive toxicity risk value and the environmental risk entropy value based on the matrix analysis method, and determine new pollutants meeting preset risk level standards in the matrix as the priority control new pollutants.

10. A computer readable storage medium having stored thereon computer programs / instructions, characterized in that: The computer program / instructions are executed by the processor to implement the water priority control new pollutant screening method in any one of claims 1-8.

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