Evaluation system and method for environmental risk grading of hazardous waste incineration unit

Abstract

The invention provides an evaluation system and method for environmental risk grading of a hazardous waste incineration unit, and the system is characterized in that the system comprises an expert factor weight calculation module which is used for obtaining the factor weight of each factor according to a factor comparison score; the final factor weight calculation module is used for obtaining a final factor weight according to the factor weight; the expert index weight calculation module is used for obtaining index weights according to index comparison scores; the average index weight calculation module is used for obtaining an average index weight according to the index weight; the final index weight calculation module is used for obtaining a final index weight according to the average index weight and the final factor weight; the scoring result calculation module is used for obtaining a scoring result according to the final index weight and the index score; and the risk level judgment module is used for obtaining an environmental risk level according to the scoring result. In a word, the method can be used for objectively grading the environmental risks.

Description

Technical Field

[0001] This invention belongs to the field of environmental management technology, specifically relating to an evaluation system and method for environmental risk classification of hazardous waste incineration units. Background Technology

[0002] To address the growing tension between the pressure and efficiency of hazardous waste regulation, a feasible approach is to implement tiered management of hazardous waste.

[0003] Hazardous waste, as a special type of solid waste, requires a hazardous waste operation license to be engaged in its collection, storage, and disposal. These entities, as the primary responsible parties for the downstream management of hazardous waste, represent a crucial regulatory focus in addressing hazardous waste environmental management issues. Therefore, the tiered management of hazardous waste should focus on the environmental risk control of hazardous waste management entities.

[0004] Currently, environmental management of hazardous waste generating and managing entities is mainly based on a unified indicator system, conducting standardized assessments from two aspects: the implementation of pollution prevention and control regulations and the fulfillment of regulatory responsibilities by environmental protection departments. However, hazardous waste management methods include incineration, landfill, and comprehensive utilization, with significant differences in treatment and disposal levels, and varying environmental management needs.

[0005] Therefore, there is a lack of objective and scientific classification and evaluation methods for the environmental supervision of hazardous waste incineration units. Summary of the Invention

[0006] This invention is made to solve the above-mentioned problems, and aims to provide an evaluation system and method for environmental risk classification of hazardous waste incineration units.

[0007] This invention provides an environmental risk classification evaluation system for hazardous waste incineration units. It is used to obtain the environmental risk level based on the index scores corresponding to each factor and its respective indicators. The system includes: a data input module for inputting factor comparison scores and index comparison scores from multiple experts, as well as all indicator scores; an expert factor weight calculation module for constructing a factor judgment matrix based on each expert's factor comparison scores and calculating the expert's factor weight for each factor using the square root method; a final factor weight calculation module for calculating the arithmetic mean of the factor weights corresponding to each factor to obtain the final factor weight for that factor; and an expert indicator weight calculation module for calculating the index weights of each expert's... The system employs a multi-module approach: a matrix of indicators is constructed using comparative scoring, and the expert's weight for each indicator is calculated using the square root method. An average indicator weight calculation module performs an arithmetic average of the indicator weights for each indicator to obtain the average indicator weight. A final indicator weight calculation module calculates the final indicator weight by multiplying the average indicator weight by the final factor weight corresponding to that indicator. A scoring result calculation module multiplies the final indicator weight of each indicator by its corresponding indicator score and sums all the products to obtain the scoring result. A risk level determination module stores preset environmental risk classification standards and determines the environmental risk level based on the scoring results.

[0008] The environmental risk classification evaluation system for hazardous waste incineration units provided by this invention may also have the following characteristics: The factors include risk source B1, risk control B2, and risk receptor B3. The indicators corresponding to risk source B1 include hazardous waste characteristics C1, hazardous waste quantity C2, and hazardous waste form C3. The indicators corresponding to risk control B2 include storage time C4, storage classification C5, process level C6, facility maintenance C7, personnel quality C8, and emergency response plan C9. The indicators corresponding to risk receptor B3 include environmental sensitivity C... 10 and secondary pollution C 11 .

[0009] The environmental risk classification evaluation system for hazardous waste incineration units provided by this invention may also have the following feature: the factor comparison score and the index comparison score are both calculated according to the 1-9 scale method.

[0010] The environmental risk classification evaluation system for hazardous waste incineration units provided by this invention may also have the following feature: the expression for the factor judgment matrix A, constructed based on the comparative scores of all factors by expert A, is as follows: In the formula a ijLet A be the factor comparison score of expert A for the i-th and j-th factors, where 1 ≤ i ≤ n, 1 ≤ j ≤ n, and n is the total number of factors. The expression for the indicator judgment matrix B, constructed based on the indicator comparison scores of expert A for all indicators corresponding to factor A, is as follows: In the formula b ij Let A be the score given by expert A for the i-th and j-th indicators corresponding to factor A, where 1≤i≤m and 1≤j≤m.

[0011] The environmental risk classification system for hazardous waste incineration units provided by this invention may also have the following feature: wherein, the factor weight ω of expert A for the i-th factor i The calculation expression is: In the formula A k The product of the elements in the k-th row of the factor judgment matrix A corresponding to expert A represents the indicator weight ω of expert A for the j-th indicator corresponding to factor A. Aj The calculation expression is: In the formula B k It is the product of the elements in the k-th row of the index judgment matrix B corresponding to factor A by expert A.

[0012] The environmental risk classification evaluation system for hazardous waste incineration units provided by this invention may also have the following features: consistency checks are performed on factor weights and indicator weights, and if the consistency check results do not meet the consistency requirements, the factor data in the corresponding factor judgment matrix or the indicator data in the indicator judgment matrix is ​​adjusted.

[0013] The environmental risk classification assessment system for hazardous waste incineration units provided by this invention may also have the following feature: the calculation expression for the scoring result is: F = s1·S1 + s2·S2 + ... + s m ·S m In the formula, F represents the scoring result, and s m S represents the final indicator weight corresponding to the m-th indicator. m The score is given for the m-th indicator, where m is the total number of indicators.

[0014] This invention also provides a method for classifying environmental risk levels based on the environmental risk classification evaluation system for hazardous waste incineration units according to any one of the above claims, characterized by the following steps: Step S1, using a data input module to input multiple experts' factor comparison scores and indicator comparison scores, as well as all indicator scores; Step S2, using an expert factor weight calculation module to construct a factor judgment matrix based on all factor comparison scores of each expert, and using the square root method to calculate the factor weight of each expert for each factor; Step S3, using a final factor weight calculation module to calculate the arithmetic mean of the factor weights corresponding to each factor to obtain the final factor weight corresponding to that factor; Step S4, using an expert indicator weight calculation module to calculate the final factor weight for each... Step S5: Construct an indicator judgment matrix by comparing the scores of all indicators from each expert. Using the square root method, calculate the expert's weight for each indicator. Step S6: Calculate the arithmetic mean of the indicator weights for each indicator using the average indicator weight calculation module to obtain the average indicator weight for that indicator. Step S7: Calculate the final indicator weight by combining the average indicator weight with the final factor weight corresponding to the factor for that indicator using the final indicator weight calculation module to obtain the final indicator weight for that indicator. Step S8: Multiply the final indicator weight of each indicator with its corresponding indicator score using the scoring result calculation module, and sum all the products to obtain the scoring result. Step S9: Calculate the environmental risk level based on the scoring result using the risk level determination module.

[0015] The role and effect of invention

[0016] According to the environmental risk classification evaluation system and method for hazardous waste incineration units of this invention, firstly, a three-level hierarchical structure model is established by screening key factors and indicators in the environmental risk classification index system for hazardous waste incineration units; secondly, detailed scoring rules, i.e., evaluation index scoring standards, are set for each indicator in the environmental risk classification index system for hazardous waste incineration units; and thirdly, a judgment matrix is ​​constructed to convert expert scores into factor weights and indicator weights, which are further processed to obtain the final indicator weights, and then combined with the indicator scores to calculate the scoring result, thereby obtaining the environmental risk level. Therefore, the environmental risk classification evaluation system and method for hazardous waste incineration units of this invention can objectively classify environmental risks. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the hierarchical structure model in an embodiment of the present invention;

[0018] Figure 2 This is a block diagram of an environmental risk classification evaluation system for hazardous waste incineration units, as described in an embodiment of the present invention.

[0019] Figure 3 This is a schematic diagram of the evaluation index scoring criteria in an embodiment of the present invention;

[0020] Figure 4 This is a flowchart illustrating the environmental risk level classification method in an embodiment of the present invention. Detailed Implementation

[0021] To make the technical means, creative features, objectives and effects of this invention easy to understand, the following embodiments, in conjunction with the accompanying drawings, specifically illustrate the evaluation system and method for environmental risk classification of hazardous waste incineration units.

[0022] This embodiment provides an evaluation system for environmental risk classification of hazardous waste incineration units, which is used to obtain the environmental risk level based on the index scores corresponding to each factor and each indicator.

[0023] Figure 1 This is a schematic diagram of the hierarchical structure model in an embodiment of the present invention.

[0024] like Figure 1 As shown, the hierarchical model consists of three layers from top to bottom: the target layer, the criterion layer, and the indicator layer. The target layer is the environmental risk classification and evaluation indicator system A for hazardous waste incineration units; the criterion layer consists of the various factors corresponding to environmental risk classification and evaluation indicator system A for hazardous waste incineration units; and the indicator layer consists of the various indicators corresponding to each factor.

[0025] The factors corresponding to the environmental risk classification and evaluation index system A for hazardous waste incineration units include risk source B1, risk control B2, and risk receptor B3.

[0026] The indicators corresponding to risk source B1 include hazardous waste characteristics (C1), hazardous waste quantity (C2), and hazardous waste form (C3). The indicators corresponding to risk control B2 include storage time (C4), storage classification (C5), process level (C6), facility maintenance (C7), personnel competence (C8), and emergency response plan (C9). The indicators corresponding to risk receptor B3 include environmental sensitivity (C). 10 and secondary pollution C 11 .

[0027] Figure 2 This is a block diagram of an environmental risk classification evaluation system for hazardous waste incineration units, as described in an embodiment of the present invention.

[0028] like Figure 2As shown, the environmental risk classification evaluation system 100 for hazardous waste incineration units includes a data input module 10, an expert factor weight calculation module 20, a final factor weight calculation module 30, an expert indicator weight calculation module 40, an average indicator weight calculation module 50, a final indicator weight calculation module 60, a scoring result calculation module 70, a risk level determination module 80, and a control module 90 that controls the operation of the above modules.

[0029] The data input module 10 is used to input the factor comparison scores between multiple experts and the indicator comparison scores between indicators, as well as the scores of all indicators.

[0030] In this embodiment, a questionnaire was used to survey nine experts to obtain their comparative scores on the factors and indicators of the environmental risk classification evaluation index system A for hazardous waste incineration units. The questionnaire is shown below:

[0031]

[0032]

[0033] The first to third columns in the table above are the serial number, the question, and the score for the question, namely the factor comparison score and the indicator comparison score.

[0034] The scores given by the nine experts for each question in this embodiment are shown in the table below:

[0035]

[0036] The first column in the table above is the serial number, the second column is the question corresponding to each serial number, and the third to eleventh columns are the scores given by each expert to the question.

[0037] In this embodiment, both the factor comparison score and the indicator comparison score are calculated using the 1-9 scale method. The 1-9 scale method assignment definition method is shown in the table below:

[0038] Scale <![CDATA[Define (factor comparison score a of the i-th factor and the j-th factor ij )]]> 1 The i-th factor is as important as the j-th factor. 3 The i-th factor is slightly more important than the j-th factor. 5 The i-th factor is more important than the j-th factor. 7 The i-th factor is more important than the j-th factor. 9 The i-th factor is absolutely more important than the j-th factor. 2、4、6、8 The intermediate value between the two judgments above. reciprocal <![CDATA[Factor comparison score a of the j-th factor and the i-th factor ji = 1 / a ij >

[0039] The first column in the table above shows the various scales, and the second column shows the corresponding assignment definitions for each scale.

[0040] Figure 3 This is a schematic diagram of the evaluation index scoring standard in an embodiment of the present invention.

[0041] like Figure 3 As shown, the first column represents the criteria layer, the second column represents the indicator layer, the third column provides an explanation of each indicator, and the fourth to seventh columns detail the specific details of the indicators corresponding to different scores. In this embodiment, the evaluation indicator scoring standard is used to obtain the indicator scores corresponding to each indicator of the hazardous waste incineration unit.

[0042] The expert factor weight calculation module 20 is used to construct a factor judgment matrix by comparing and scoring all factors for each expert, and then calculates the factor weight of each expert for each factor by combining the square root method.

[0043] The expression for factor judgment matrix A, constructed based on the comparative scores of all factors by expert A, is as follows:

[0044]

[0045] In the formula a ij Let A be the factor comparison score of expert A for the i-th factor and the j-th factor, where 1≤i≤n, 1≤j≤n, and n is the total number of factors.

[0046] In this embodiment, the expression for the factor judgment matrix A1 constructed by comparing all factors scored by expert 1 is:

[0047]

[0048] The factor weight ω of expert A for the i-th factor i The calculation expression is:

[0049]

[0050] In the formula A k The product of the elements in the k-th row of the factor judgment matrix A corresponding to expert A is A. k =a k1 *a k2 *...*a kn .

[0051] In this embodiment, the factor weights of expert 1 for risk source B1 are... Factor weights for risk control B2 and factor weights for risk receptor B3 The calculation expression is:

[0052]

[0053]

[0054]

[0055] The final factor weight calculation module 30 is used to calculate the arithmetic average of the factor weights corresponding to each factor to obtain the final factor weight corresponding to that factor.

[0056] In this embodiment, the factor weights and final factor weights (%) of the nine experts for each factor are shown in the table below:

[0057]

[0058]

[0059] The first column in the table above shows the weights of each expert and the final factor. The second to fourth columns show the factor weights and the final factor weights corresponding to risk source B1, risk control B2, and risk receptor B3, respectively, based on the scores given by each expert.

[0060] The expert indicator weight calculation module 40 is used to construct an indicator judgment matrix by comparing and scoring all indicators of each expert, and then calculates the indicator weight of each expert for each indicator by combining the square root method.

[0061] The expression for the indicator judgment matrix B, constructed based on expert A's comparative scores of all indicators corresponding to factor A, is as follows:

[0062]

[0063] In the formula b ij Let A be the score given by expert A for the i-th and j-th indicators corresponding to factor A, where 1≤i≤m and 1≤j≤m.

[0064] In this embodiment, the expression for the indicator judgment matrix A2 corresponding to the hazardous waste characteristics C1, quantity C2, and form C3 of risk source B1 by expert 1 is:

[0065]

[0066] The expression for the indicator judgment matrix A3 corresponding to risk control B2 (storage time C4, storage classification C5, process level C6, facility maintenance C7, personnel quality C8, and emergency plan C9) is as follows:

[0067]

[0068] Expert 1 is sensitive to environmental factors corresponding to risk receptor B3. 10 and secondary pollution C 11 The expression for the corresponding indicator judgment matrix A4 is:

[0069]

[0070] The weight ω of the j-th indicator corresponding to factor A by expert A. Aj The calculation expression is:

[0071]

[0072] In the formula B k It is the product of the elements in the k-th row of the index judgment matrix B corresponding to factor A by expert A.

[0073] In this embodiment, the calculated factor weights and indicator weights are subjected to a consistency check. If the consistency check result does not meet the consistency requirements, the factor data in the corresponding factor judgment matrix or the indicator data in the indicator judgment matrix are adjusted until the consistency check result meets the consistency requirements.

[0074] In this embodiment, the result of the consistency test is CR, and the consistency requirement is CR < 0.1. The expression for calculating CR is:

[0075]

[0076]

[0077]

[0078] In the formula, n is the number of indicators or factors in the judgment matrix, and ω i To determine the weight of the indicator corresponding to the i-th indicator or the factor corresponding to the i-th factor in the matrix, Aω is the cumulative value of the new matrix after multiplying the judgment matrix by the standardized weights, row by row.

[0079] The average indicator weight calculation module 50 is used to calculate the arithmetic average of the indicator weights corresponding to each indicator to obtain the average indicator weight corresponding to that indicator.

[0080] In this embodiment, the indicator weights and average indicator weights (%) of the nine experts for each indicator corresponding to risk source B1 are shown in the table below:

[0081]

[0082] The first column in the table above shows the weights of each expert and the average weight of the indicators. The second to fourth columns show the weights of the indicators corresponding to hazardous waste characteristics C1, hazardous waste quantity C2, and hazardous waste form C3, respectively, based on the scores given by each expert, and the average weight of the indicators.

[0083] In this embodiment, the indicator weights and average indicator weights (%) of the nine experts for each indicator corresponding to risk control B2 are shown in the table below:

[0084]

[0085]

[0086] The first column in the table above shows the weights of each expert and the average weight of each indicator. The second to seventh columns show the weights of the indicators C4 (storage time), C5 (storage classification), C6 (process level), C7 (facility maintenance), C8 (personnel quality), and C9 (emergency plan), respectively, based on the scores given by each expert, and the average weight of each indicator.

[0087] In this embodiment, the indicator weights and average indicator weights (%) of the nine experts for each indicator corresponding to risk receptor B3 are shown in the table below:

[0088]

[0089] The first column in the table above shows the weights of each expert and the average indicator. The second and third columns are, respectively, the environmental sensitivity C. 10 and secondary pollution C 11 The corresponding indicator weights and average indicator weights are obtained based on the scores given by the experts.

[0090] The final indicator weight calculation module 60 is used to calculate the average indicator weight corresponding to each indicator and the final factor weight corresponding to the factor corresponding to the indicator, so as to obtain the final indicator weight corresponding to the indicator.

[0091] The table below shows the corresponding calculation relationship between the average indicator weights and the final factor weights in this embodiment, the calculation results of the final indicator weights, and the results of sorting according to the weights (%) of each final indicator:

[0092]

[0093] The first column of the table above lists the various indicators; the second to fourth columns show the correspondence between each indicator and each factor, as well as the average indicator weight; and the fifth and sixth columns show the final indicator weights and their ranking for each indicator. In this embodiment, the ranking allows for further identification of the degree of influence of each indicator on the environmental risk classification of hazardous waste incineration units.

[0094] The scoring result calculation module 70 is used to multiply the final indicator weight corresponding to each indicator with the indicator score corresponding to that indicator, and add all the product results to obtain the scoring result.

[0095] The calculation expression for the scoring result is as follows:

[0096] F = s1·S1 + s2·S2 + ... + s m ·S m ,

[0097] In the formula, F represents the scoring result, and s m S represents the final indicator weight corresponding to the m-th indicator. m The score is given for the m-th indicator, where m is the total number of indicators.

[0098] Therefore, based on the final index weights calculated by the nine experts in this embodiment, the calculation expression for the above scoring result can be further expressed as:

[0099] F=23.117%·S1+3.360%·S2+6.807%·S3+3.456%·S4+13.802%·S5+15.182%·S6+4.309%·S7+2.827%·S8+10.867%·S9+6.539%·S 10 +9.733%·S 11 .

[0100] The risk level determination module 80 stores preset environmental risk classification standards, which are used to obtain the environmental risk level based on the scoring results.

[0101] The environmental risk classification criteria in this embodiment are shown in the table below:

[0102]

[0103] The first row in the table above shows the range of each score result, and the second row shows the environmental risk level corresponding to each score.

[0104] The control module 90 stores the control program that controls the operation of the above modules.

[0105] The following, in conjunction with the accompanying drawings, explains the process of classifying environmental risk levels using the assessment system 100 for environmental risk classification of hazardous waste incineration units.

[0106] Figure 4 This is a flowchart illustrating the environmental risk level classification method in an embodiment of the present invention.

[0107] like Figure 4 As shown, the environmental risk level classification method includes the following steps:

[0108] Step S1: Use the data input module 10 to input multiple experts' factor comparison scores between factors and indicator comparison scores between indicators, as well as all indicator scores.

[0109] Step S2: The expert factor weight calculation module 20 is used to construct a factor judgment matrix by comparing and scoring all factors for each expert. Combined with the square root method, the factor weight of each expert for each factor is calculated.

[0110] Step S3: The final factor weight calculation module 30 is used to calculate the arithmetic average of the factor weights corresponding to each factor to obtain the final factor weight corresponding to that factor.

[0111] Step S4: The expert indicator weight calculation module 40 compares and scores all indicators of each expert to construct an indicator judgment matrix. Combined with the square root method, the indicator weight of each expert for each indicator is calculated.

[0112] Step S5: The average indicator weight calculation module 50 is used to calculate the arithmetic average of the indicator weights corresponding to each indicator to obtain the average indicator weight corresponding to that indicator.

[0113] Step S6: The final indicator weight calculation module 60 calculates the average indicator weight corresponding to each indicator and the final factor weight corresponding to the factor corresponding to the indicator to obtain the final indicator weight corresponding to the indicator.

[0114] Step S7: The scoring result calculation module 70 multiplies the final indicator weight corresponding to each indicator with the indicator score corresponding to that indicator, and adds all the product results to obtain the scoring result.

[0115] Step S8: The environmental risk level is obtained by using the risk level determination module 80 based on the scoring results.

[0116] The role and effect of the embodiments

[0117] According to the evaluation system and method for environmental risk classification of hazardous waste incineration units involved in this embodiment, firstly, a three-level hierarchical structure model is established by screening key factors and indicators in the environmental risk classification index system for hazardous waste incineration units; secondly, scoring rules, i.e., evaluation index scoring standards, are set for each indicator in the environmental risk classification index system for hazardous waste incineration units; thirdly, a judgment matrix is ​​constructed to convert expert scores into factor weights and indicator weights, and further processed to obtain the final indicator weights, which are then combined with the indicator scores to calculate the scoring result, thereby obtaining the environmental risk level. In summary, this method can objectively classify environmental risks.

[0118] Those skilled in the art should understand that this invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to this invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the invention as claimed. The scope of protection of this invention is defined by the appended claims and their equivalents.

Claims

1. An evaluation system for grading environmental risk of a hazardous waste incineration unit, for obtaining an environmental risk grade according to index scores of respective indexes corresponding to respective factors, characterized in that, Comprise: a data input module for inputting a plurality of expert factor comparison scores between the factors and index comparison scores between the indicators, and all the index scores; an expert factor weight calculation module for constructing a factor judgment matrix from all the factor comparison scores of each expert, and calculating the factor weight of each factor of the expert by combining the square root method; a final factor weight calculation module for calculating the final factor weight corresponding to each factor by performing an arithmetic mean calculation on the factor weights corresponding to the factor; an expert index weight calculation module for constructing an index judgment matrix from all the index comparison scores of each expert, and calculating the index weight of each index of the expert by combining the square root method; an average index weight calculation module for calculating the average index weight corresponding to each index by performing an arithmetic mean calculation on the index weights corresponding to the index; a final index weight calculation module for calculating the final index weight corresponding to each index by calculating the average index weight corresponding to the index and the final factor weight corresponding to the factor corresponding to the index; a score result calculation module for multiplying the final index weight corresponding to each index by the index score corresponding to the index, and adding all the product results to obtain a score result; a risk level determination module having a preset environmental risk classification standard, for obtaining the environmental risk level according to the score result.

2. The evaluation system for classifying the environmental risk of a hazardous waste incineration unit according to claim 1, wherein: wherein the factors include a risk source B1, a risk control B2, and a risk receptor B3, the indicators corresponding to the risk source B1 include hazardous waste characteristics C1, hazardous waste quantity C2, and hazardous waste form C3, the indicators corresponding to the risk control B2 include storage time C4, storage classification C5, process level C6, facility maintenance C7, personnel quality C8, and emergency plan C9, The index corresponding to the risk receptor B3 includes environmental sensitivity C 10 and secondary pollution C 11 .

3. The evaluation system for classifying the environmental risk of a hazardous waste incineration unit according to claim 1, wherein: wherein, the factor comparison scores and the index comparison scores are both calculated according to the 1-9 scale method.

4. The evaluation system for classifying the environmental risk of a hazardous waste incineration unit according to claim 1, wherein: wherein the expression of the factor judgment matrix A constructed according to all the factor comparison scores of expert A is: wherein a ij is the factor pair comparison score of expert A for the i-th factor and the j-th factor, 1≤i≤n, 1≤j≤n, n is the total number of factors, the expression of the index judgment matrix B constructed according to the index comparison scores of expert A corresponding to all the indicators of factor A is: where b ij is the expert A's score for the i-th indicator and j-th indicator corresponding to factor A, 1≤i≤m, 1≤j≤m.

5. The evaluation system for classifying the environmental risk of a hazardous waste incineration unit according to claim 4, wherein: wherein, The factor weight ω of the expert A to the i-th factor i The calculation expression is: wherein A k is the product of the elements in the kth row of the expert A's factor judgment matrix A, The index weight ω of the jth index corresponding to the factor A of the expert A Aj The calculation expression is: where B k is the product of the elements in the kth row of the matrix B of expert A's judgments of the factors corresponding to factor A.

6. The evaluation system for classifying the environmental risk of a hazardous waste incineration unit according to claim 5, wherein: wherein the factor weight and the index weight are subjected to consistency check, and when the result of the consistency check does not meet the consistency requirement, the factor data in the corresponding factor judgment matrix or the index data in the corresponding index judgment matrix is adjusted.

7. The evaluation system for grading environmental risk of hazardous waste incineration units according to claim 1, characterized in that: wherein The calculation expression of the score result is: F = s1 · S1 + s2 · S2 +... + s m · S m , wherein F is the score result, s m is the final index weight corresponding to the mth index, S m is the index score corresponding to the mth index, and m is the total number of indexes.

8. The method of classifying the environmental risk level of the system for evaluating the environmental risk classification of hazardous waste incineration units according to any one of claims 1 to 7, characterized in that, Comprising the following steps: Step S1, inputting the factor pair comparison scores between the factors and the index pair comparison scores between the indexes, and all the index scores by using a data input module; Step S2, constructing a factor judgment matrix for all the factor pair comparison scores of each expert by using an expert factor weight calculation module, and obtaining the factor weight of each factor of the expert by using a square root method; Step S3, performing an arithmetic average calculation on the factor weights corresponding to each factor by using a final factor weight calculation module, and obtaining the final factor weight corresponding to the factor; Step S4, constructing an index judgment matrix for all the index pair comparison scores of each expert by using an expert index weight calculation module, and obtaining the index weight of each index of the expert by using a square root method; Step S5, performing an arithmetic average calculation on the index weights corresponding to each index by using an average index weight calculation module, and obtaining the average index weight corresponding to the index; Step S6, performing a calculation on the average index weight corresponding to each index and the final factor weight corresponding to the factor corresponding to the index by using a final index weight calculation module, and obtaining the final index weight corresponding to the index; Step S7, multiplying the final index weight corresponding to each index by the index score corresponding to the index by using a score result calculation module, and adding all the product results to obtain a score result; Step S8, obtaining the environmental risk grade according to the score result by using a risk grade determination module.

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