CN109604316B - Screening method for radioactive contaminated soil remediation technology - Google Patents

Screening method for radioactive contaminated soil remediation technology Download PDF

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CN109604316B
CN109604316B CN201811259630.5A CN201811259630A CN109604316B CN 109604316 B CN109604316 B CN 109604316B CN 201811259630 A CN201811259630 A CN 201811259630A CN 109604316 B CN109604316 B CN 109604316B
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repair
contaminated soil
soil remediation
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CN109604316A (en
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罗恺
李洋
顾志杰
廉冰
王彦
赵杨军
杨洁
康晶
陈海龙
王猛
于志翔
苏自强
刘畅
刘腾
刘亚芳
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China Institute for Radiation Protection
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China Institute for Radiation Protection
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
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    • B09C1/00—Reclamation of contaminated soil

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Abstract

The invention discloses a screening method of a radioactive contaminated soil remediation technology, which comprises the steps of establishing a primary screening index system and a secondary screening index system of the radioactive contaminated soil remediation technology, carrying out screening treatment of the remediation technology based on the systems, and then obtaining screening results of the radioactive contaminated soil remediation technology through weighted calculation of primary screening results and secondary screening results, wherein: the method comprises the steps of primary screening processing, removing unsuitable repairing technologies, sorting suitable repairing technologies to obtain primary screening sorting results, secondary screening processing, sorting processing, screening repairing technologies suitable for polluted sites through cost benefit analysis, and obtaining secondary screening sorting results. The method can automatically screen the radioactive contaminated soil remediation technology, has high automation, standardization and standardization degrees, eliminates the influence of artificial subjective factors as much as possible, has high efficiency and good uniformity, establishes a uniform screening index system, and realizes intellectualization and automation of screening and decision making.

Description

Screening method for radioactive contaminated soil remediation technology
Technical Field
The invention relates to the technical field of radiation protection, in particular to a screening method for a radioactive contaminated soil remediation technology.
Background
The radioactive contaminated soil has the characteristics of large contaminated area, concentration on the surface layer of the soil and complex influence factors. The radioactive contaminated soil remediation technology comprises the following steps: indirect prevention, direct treatment, bioremediation, and the like. The repair technology needs to be selected according to actual conditions, the existing screening mode mostly adopts an expert scoring method, and subjective factors play a leading role in results. Moreover, the degree of automation, standardization and standardization is not high, and the method is not beneficial to unifying standards, requirements and specifications. The determination of the repair technology requires a large amount of manpower and time to be preliminarily determined, which is not favorable for the timely development of the treatment work.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a screening method of a radioactive contaminated soil remediation technology, which adopts a hierarchical analysis method and a mixed type grade higher than a method aiming at the radioactive contaminated soil remediation technology, can analyze and screen various listed radioactive contaminated soil remediation technologies according to the importance of key parameters, and provides a recommended remediation technology by combining with relevant information of a soil field.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
a screening method for a radioactive contaminated soil remediation technology comprises the following steps:
establishing a primary screening index system and a secondary screening index system of the radioactive contaminated soil remediation technology,
based on the system, the repairing technology screening treatment is carried out, then the screening result of the radioactive contaminated soil repairing technology is obtained through the weighted calculation of the primary screening result and the secondary screening result,
wherein:
the repair technology screening process comprises the following steps:
primary screening processing, collecting polluted site information to obtain polluted site data, eliminating unsuitable restoration technology, sorting suitable restoration technology based on the primary screening index system to obtain primary screening sorting result, eliminating unsuitable restoration technology for polluted site condition,
and (4) secondary screening treatment, namely performing sorting treatment on the primary screening sorting result on the basis of a secondary screening index system, and screening out a repairing technology suitable for a polluted site through cost benefit analysis to obtain a secondary screening sorting result.
Further, according to the screening method for the radioactive contaminated soil remediation technology, a primary screening index system and a secondary screening index system of the radioactive contaminated soil remediation technology are established based on the survey result of the contaminated soil site.
Further, according to the screening method for the radioactive contamination soil remediation technology, the primary screening index system and the secondary screening index system are established and then store corresponding information in a digital form, wherein the digital form includes but is not limited to a form of a database.
Further, the screening method of the radioactive contaminated soil remediation technology comprises the steps that a primary screening index parameter system is divided into an index layer, a criterion layer and a target layer, the levels are sequentially increased,
criterion layer A1The method is used for reflecting the polluted site information, and the preset index layer comprises the following specific indexes:
level of radioactive contamination A11Type A of contaminated soil12Radioactive contamination nuclide A13pH value A of the contaminated soil14Humidity A of contaminated soil15Organic carbon of soilContent A16Soil cation substitution amount A17Hydraulic conductivity coefficient A18；
Criterion layer A2The method is used for reflecting the plant restoration parameters, and the index layer of the method is preset to comprise the following specific indexes:
vegetation coverage rate A21Total N content A of soil22Total P content A of soil23Clay content A24Content of powder particles A25；
Criterion layer A3The method is used for reflecting the repair budget information, and the preset index layer comprises the following specific indexes:
soil remediation estimated time A31Soil remediation estimation cost A32。
Further, according to the screening method of the radioactive contaminated soil remediation technology, the secondary screening index parameter system is divided into an index layer, a criterion layer and a target layer, the levels are sequentially increased,
criterion layer B1The method is used for reflecting environment cost information, and the preset index layer comprises the following specific indexes:
secondary pollution B11Environment residual capacity B12；
Criterion layer B2The method is used for reflecting technical cost information, and the preset index layer comprises the following specific indexes:
degree of technical maturity B21Repair efficiency B22Repair time B23；
Criterion layer B3The method is used for reflecting economic benefit cost information, and the preset index layer comprises the following specific indexes:
occupational irradiation B31And a unit time fee B32。
Further, according to the screening method for the radioactive contaminated soil remediation technology, each parameter has different importance for the screening remediation technology, and importance is introduced to perform weight division on the parameters to construct an importance matrix.
Further, the screening method of the radioactive contamination soil remediation technology as described above sequentially performs importance calculation and deviation calculation in both the primary screening process and the secondary screening process, wherein:
the calculation of the importance degree includes:
solving the importance matrix to obtain the maximum eigenvalue lambda max of the matrix and the corresponding eigenvector,
when the number n of the screening index parameters of the repair technology is less than the maximum characteristic value, a consistency check index is further introduced
Figure BDA0001843599110000031
And a random index RI, which is related to the matrix dimension, determines the matrix consistency,
when the consistency ratio is
Figure BDA0001843599110000032
The specification matrix is within an acceptable range,
according to the matrix, weights and weight sequences of screening indexes of the repair technologies in the primary screening and secondary screening processes are obtained through calculation;
the calculation of the degree of deviation includes:
the deviation degree is calculated by adopting a mixed type method with the grade higher than HB-SIR so as to overcome the difference between different types of attribute values required by screening of the radioactive contaminated soil remediation technology.
Further, in the screening method of the radioactive contaminated soil remediation technology, in the primary screening treatment, firstly, quantitative parameter deviation calculation is performed:
level of radioactive contamination A11pH value A of the contaminated soil14Humidity A of contaminated soil15Soil organic carbon content A16Soil cation substitution amount A17Hydraulic conductivity coefficient A18Vegetation coverage rate A21Total N content A of soil22Total P content A of soil23Clay content A24Content of powder particles A25Soil restoration estimation time A31And estimated cost of soil remediation A32Belongs to the field of quantitative parameters,
introducing degree of deviation in primary screening process
Figure BDA0001843599110000033
To describe the contaminated site parameter x0The degree of conformity with the optimal parameter x of the repair technique,
then, calculating the deviation degree of qualitative parameters:
contaminated soil type A12Radioactive contamination nuclide A13Belongs to the qualitative parameter, and belongs to the technical field of the qualitative parameter,
adopting qualitative deviation degree according to the ratio of satisfying number n and not satisfying number m to corresponding parameter in database
Figure BDA0001843599110000035
In the description that follows,
dividing the deviation degree of the preliminary screening quantitative and qualitative parameters obtained by calculation into 7 grades to obtain corresponding triangular fuzzy numbers,
corresponding grade information is obtained according to the triangular fuzzy number,
when one grade I or II appears, the corresponding repairing technology is removed and secondary screening is not carried out,
when the grade is III or IV and appears more than three times and does not contain three times, the corresponding repairing technology is removed and secondary screening is not carried out,
the restoration technology with the grade higher than V adopts an HB-SIR method to obtain a primary screening sorting score R1。
Further, in the screening method of the radioactive contaminated soil remediation technology, in the secondary screening treatment, firstly, qualitative parameter deviation degree calculation is performed:
secondary pollution B11Environment residual capacity B12And degree of technical maturity B21Belongs to the qualitative parameter, and belongs to the technical field of the qualitative parameter,
the restoration technology obtained by primary screening is combined with the actual situation of the site and the historical restoration experience, the conformity degree of the restoration technology and the parameters is graded, the grading is calculated by percentage, the grading obtaining quantity is not less than 5,
and respectively calculating the average value E and the standard deviation S according to the grading result to obtain a grading data discrete coefficient:
Figure BDA0001843599110000041
set μ to 10% as the dispersion limit,
when mu is smaller than the value, all the score average values are adopted as the values of the corresponding items,
when mu is larger than the value, a method of removing the maximum value and the minimum value of the corresponding parameter score under the corresponding repair technology and then carrying out average processing on the residual value is adopted,
the scoring results are divided by good, medium, passing and difference, corresponding to discrete coefficient values of [90,100 ], [80,90 ], [70,80 ], [60,70 ], [ 0,60 ],
then, quantitative parameter deviation calculation is carried out:
repair efficiency B22Repair time B23Occupational irradiation B31And a unit time fee B32Belongs to the field of quantitative parameters,
the lowest cost and the highest cost of a certain repair technology under a unit area are respectively set as F1And F2The shortest and longest repair times are T1And T2The strongest and weakest occupational exposure are respectively1And2the lowest and highest repair efficiencies are respectively H1And H2；
The estimated cost of a certain polluted site arranged under a unit area is F0Predicted repair time T0The occupational irradiation produced is0And the estimated repair efficiency is H0；
Then:
Figure BDA0001843599110000042
the distance between the estimated cost and the highest cost and the lowest cost of the unit area under the repairing technology is used for representing the quality degree of the repairing technology relative to the polluted site;
Figure BDA0001843599110000051
to estimate the repair time and the shortest/longest length under the repair techniqueThe distance of the repair time;
Figure BDA0001843599110000052
estimating the distance between the occupational irradiation and the strongest/weakest occupational irradiation under the restoration technology;
Figure BDA0001843599110000053
predicting the distance between the repair efficiency and the lowest/highest repair efficiency under the repair technology;
wherein:
the estimated restoration time, restoration efficiency and occupational irradiation dose are given professional guidance values by a soil restoration expert,
the pollution cost is given a guidance value by cost accounting personnel and a soil remediation expert together;
the set k ═ { f, t, gamma, eta } is adopted to express the distance ratio of each item of unit area repairing cost, repairing time, repairing efficiency and occupational irradiation dose,
dividing the deviation degree of the secondary screening quantitative and qualitative parameters obtained by calculation into 5 grades to obtain corresponding triangular fuzzy numbers,
obtaining secondary screening sorting score R by adopting HB-SIR method2。
Further, the screening method of the radioactive contaminated soil remediation technology is used for primarily screening and sorting the score R1And a secondary screening ranking score R2Based on the results of the two screenings, the w [ R ] is given1,R2]Weighting processing is carried out according to the weight proportion of {0.35,0.65} to obtain a final screening result as decision suggestion information,
the maximum value in the decision suggestion information represents the repairing technology most suitable for the polluted site, and the technology can be used for decontaminating the soil of the polluted site.
The invention has the beneficial effects that: the invention can automatically screen the radioactive contaminated soil remediation technology, has high automation, standardization and standardization degrees, eliminates the influence of artificial subjective factors as much as possible, has high efficiency and good uniformity, establishes a uniform screening index system and realizes the intellectualization and automation of screening and decision-making. The invention can provide the importance of key parameters for screening the radioactive contaminated soil remediation technology based on a hierarchical analysis method and a mixed grade higher than a method, and provides a corresponding remediation technology screening method aiming at a radioactive contaminated soil field.
Drawings
FIG. 1 is a hierarchical relationship of the preliminary screening index system and parameters according to the present invention;
FIG. 2 is a hierarchical relationship of the secondary screening index system and parameters according to the present invention;
FIG. 3 is a flow chart of the method of the present invention;
FIG. 4 is a flow chart of the hybrid grade over method screening according to the present invention.
Detailed Description
The invention is described in further detail below with reference to the drawings and the detailed description.
FIG. 1 shows a hierarchical relationship of the preliminary screening index system and parameters of the present invention, wherein:
the preliminary screening index parameter system is divided into an index layer, a criterion layer and a target layer, the levels are sequentially increased,
criterion layer A1The method is used for reflecting the polluted site information, and the preset index layer comprises the following specific indexes:
level of radioactive contamination A11Type A of contaminated soil12Radioactive contamination nuclide A13pH value A of the contaminated soil14Humidity A of contaminated soil15Soil organic carbon content A16Soil cation substitution amount A17Hydraulic conductivity coefficient A18；
Criterion layer A2The method is used for reflecting the plant restoration parameters, and the index layer of the method is preset to comprise the following specific indexes:
vegetation coverage rate A21Total N content A of soil22Total P content A of soil23Clay content A24Content of powder particles A25；
Criterion layer A3Is used forReflecting the repair budget information, and presetting an index layer of the repair budget information to comprise the following specific indexes:
soil remediation estimated time A31Soil remediation estimation cost A32；
Each parameter has different importance for the screening and repairing technology, so that importance is introduced to weight division of the parameters.
The primary screening importance is mainly obtained through soil remediation historical experience summary and relevant expert guidance, so that a primary screening remediation technical parameter importance matrix is constructed.
Fig. 2 shows a hierarchical relationship of the secondary screening index system and parameters of the present invention, in which:
the secondary screening index parameter system is divided into an index layer, a criterion layer and a target layer, the levels are sequentially increased,
criterion layer B1The method is used for reflecting environment cost information, and the preset index layer comprises the following specific indexes:
secondary pollution B11Environment residual capacity B12；
Criterion layer B2The method is used for reflecting technical cost information, and the preset index layer comprises the following specific indexes:
degree of technical maturity B21Repair efficiency B22Repair time B23；
Criterion layer B3The method is used for reflecting economic benefit cost information, and the preset index layer comprises the following specific indexes:
occupational irradiation B31And a unit time fee B32；
Each parameter has different importance for the screening and repairing technology, so that importance is introduced to weight division of the parameters.
The secondary screening importance is obtained mainly through soil remediation historical experience summary and relevant expert guidance, so that a secondary screening remediation technical parameter importance matrix is constructed.
Fig. 3 is a flowchart illustrating a screening method for a radioactive contaminated soil remediation technology according to an embodiment of the present invention, where the method mainly includes:
establishing a primary screening index system and a secondary screening index system of the radioactive contaminated soil remediation technology,
establishing a primary screening index system and a secondary screening index system of the radioactive contaminated soil remediation technology based on the contaminated soil site investigation result, carrying out screening treatment of the remediation technology based on the systems, then obtaining a screening result of the radioactive contaminated soil remediation technology through weighted calculation of the primary screening result and the secondary screening result,
wherein:
the repair technology screening process comprises the following steps:
primary screening processing, collecting polluted site information (polluted site data), eliminating unsuitable restoration technology, sorting the suitable restoration technology based on the primary screening index system to obtain a primary screening sorting result, eliminating unsuitable restoration technology under the polluted site condition,
and (4) secondary screening treatment, namely performing sorting treatment on the primary screening sorting result on the basis of a secondary screening index system, and screening out a repairing technology suitable for a polluted site through cost benefit analysis to obtain a secondary screening sorting result.
On the basis of the technical scheme, the primary screening index system and the secondary screening index system are established and then store corresponding information in a digital form, wherein the digital form comprises but is not limited to a form of a database.
On the basis of the technical scheme, the preliminary screening index system comprises the following steps: establishing standard layers of the system, setting specific indexes in each standard layer to establish an index layer,
the standard layers of the preliminary screening index system are preset into three types:
criterion layer A1The method is used for reflecting the polluted site information, and the preset index layer comprises the following specific indexes:
level of radioactive contamination A11Type A of contaminated soil12Radioactive contamination nuclide A13pH value of contaminated soilA14Humidity A of contaminated soil15Soil organic carbon content A16Soil cation substitution amount A17Hydraulic conductivity coefficient A18；
Criterion layer A2The method is used for reflecting the plant restoration parameters, and the index layer of the method is preset to comprise the following specific indexes:
vegetation coverage rate A21Total N content A of soil22Total P content A of soil23Clay content A24Content of powder particles A25；
Criterion layer A3The method is used for reflecting the repair budget information, and the preset index layer comprises the following specific indexes:
soil remediation estimated time A31Soil remediation estimation cost A32。
On the basis of the technical scheme, the secondary screening index system comprises: establishing standard layers of the system, setting specific indexes in each standard layer to establish an index layer,
the standard layers of the secondary screening index system are preset into three types:
criterion layer B1The method is used for reflecting environment cost information, and the preset index layer comprises the following specific indexes:
secondary pollution B11Environment residual capacity B12；
Criterion layer B2The method is used for reflecting technical cost information, and the preset index layer comprises the following specific indexes:
degree of technical maturity B21Repair efficiency B22Repair time B23；
Criterion layer B3The method is used for reflecting economic benefit cost information, and the preset index layer comprises the following specific indexes:
occupational irradiation B31And a unit time fee B32。
On the basis of the technical scheme, in the primary screening treatment and the secondary screening treatment, importance calculation and deviation calculation are sequentially carried out, wherein:
the calculation of the importance degree includes:
the importance matrix can be established according to the summary of the historical soil remediation experience and the guidance of relevant experts,
solving the importance matrix to obtain the maximum eigenvalue lambda max of the matrix and the corresponding eigenvector,
when the number n of the screening index parameters of the repair technology is less than the maximum characteristic value, a consistency check index is further introduced
Figure BDA0001843599110000081
And the consistency of the matrix is judged by the random index RI,
when the consistency ratio is
Figure BDA0001843599110000082
The specification matrix is within an acceptable range,
according to the matrix, weights and weight sequences of screening indexes of the repair technologies in the primary screening and secondary screening processes are obtained through calculation;
in the above scheme, the random index RI is related to the matrix dimension, and the values thereof are shown in table 1,
TABLE 1 randomness index vs. matrix dimensionality
Figure BDA0001843599110000091
The calculation of the degree of deviation includes:
the deviation degree calculation adopts a mixed type grade higher than a HB-SIR method to calculate so as to overcome the difference between attribute values of different types required by screening of the radioactive contaminated soil remediation technology, and the core idea is as follows: the complete sorting result of the initial screening of the remediation technology is obtained by constructing the advantage and disadvantage matrixes and weighting, an alternative remediation technology selection scheme is provided for screening the remediation technology of the radioactive contaminated soil,
in the preliminary screening process, first, quantitative parameter deviation calculation is performed:
level of radioactive contamination A11pH value A of the contaminated soil14Humidity A of contaminated soil15Soil organic carbon content A16Soil cation substitution amount A17Hydraulic conductivity coefficient A18Vegetation coverage rate A21Total N content A of soil22Total P content A of soil23Clay content A24Content of powder particles A25Soil restoration estimation time A31And estimated cost of soil remediation A32Belongs to the field of quantitative parameters,
introducing degree of deviation in primary screening process
Figure BDA0001843599110000092
To describe the contaminated site parameter x0The degree of conformity with the optimal parameter x of the repair technique,
then, calculating the deviation degree of qualitative parameters:
contaminated soil type A12Radioactive contamination nuclide A13Belongs to the qualitative parameter, and belongs to the technical field of the qualitative parameter,
adopting qualitative deviation degree according to the ratio of satisfying number n and not satisfying number m to corresponding parameter in database
Figure BDA0001843599110000095
In the description that follows,
dividing the deviation degree of the preliminary screening quantitative and qualitative parameters obtained by calculation into 7 grades to obtain corresponding triangular fuzzy numbers,
the corresponding triangular fuzzy number is obtained from table 2,
TABLE 2 Primary screening of triangular blur numbers
Figure BDA0001843599110000093
Figure BDA0001843599110000101
When one grade I or II appears, the corresponding repairing technology is removed and secondary screening is not carried out,
when the grade is III or IV, the repairing technology is removed and secondary screening is not carried out when more than three times (three times are not contained),
the restoration technology with the grade higher than V adopts an HB-SIR method to obtain a primary screening sorting score R1；
In the secondary screening process, firstly, qualitative parameter deviation degree calculation is carried out:
secondary pollution B11Environment residual capacity B12And degree of technical maturity B21Belongs to the qualitative parameter, and belongs to the technical field of the qualitative parameter,
the restoration technology obtained by primary screening is combined with the actual situation of the site and the historical restoration experience, the conformity degree of the restoration technology and the parameters is graded according to percentage, the grading obtaining quantity is not less than 5, the data can be recorded into a database system after being graded by experts,
and respectively calculating the average value E and the standard deviation S according to the grading result to obtain a grading data discrete coefficient:
Figure BDA0001843599110000102
set μ to 10% as the dispersion limit,
when mu is smaller than the value, all the score average values are adopted as the values of the corresponding items,
when mu is larger than the value, a method of removing the maximum value and the minimum value of the corresponding parameter score under the corresponding repair technology and then carrying out average processing on the residual value is adopted,
the scoring results are divided by good, medium, passing and difference, corresponding to discrete coefficient values of [90,100 ], [80,90 ], [70,80 ], [60,70 ], [ 0,60 ],
then, quantitative parameter deviation calculation is carried out:
repair efficiency B22Repair time B23Occupational irradiation B31And a unit time fee B32Belongs to the field of quantitative parameters,
the lowest cost and the highest cost of a certain repair technology under a unit area are respectively set as F1And F2The shortest and longest repair times are T1And T2The strongest and weakest occupational exposure are respectively1And2the lowest and highest repair efficiencies are respectively H1And H2；
The estimated cost of a certain polluted site arranged under a unit area is F0Predicted repair time T0The occupational irradiation produced is0And the estimated repair efficiency is H0；
Then:
Figure BDA0001843599110000111
the distance between the estimated cost and the highest cost and the lowest cost of the unit area under the repairing technology is used for representing the quality degree of the repairing technology relative to the polluted site;
Figure BDA0001843599110000112
estimating the distance between the repair time and the shortest/longest repair time under the repair technology;
Figure BDA0001843599110000113
estimating the distance between the occupational irradiation and the strongest/weakest occupational irradiation under the restoration technology;
Figure BDA0001843599110000114
predicting the distance between the repair efficiency and the lowest/highest repair efficiency under the repair technology;
wherein:
the estimated restoration time, restoration efficiency and occupational irradiation dose are given professional guidance values by a soil restoration expert,
the pollution cost is given a guidance value by cost accounting personnel and a soil remediation expert together;
the set k ═ { f, t, gamma, eta } is adopted to express the distance ratio of each item of unit area repairing cost, repairing time, repairing efficiency and occupational irradiation dose,
dividing the deviation degree of the secondary screening quantitative and qualitative parameters obtained by calculation into 5 grades to obtain corresponding triangular fuzzy numbers,
the corresponding triangular blur numbers obtained are obtained from table 3,
TABLE 3 secondary screening triangle fuzzy number
Figure BDA0001843599110000115
Obtaining secondary screening sorting score R by adopting HB-SIR method2。
On the basis of the technical scheme, the scores R are sorted by primary screening1And a secondary screening ranking score R2Based on the results of the two screenings, the w [ R ] is given1,R2]And (5) weighting the {0.35,0.65} weight proportion to obtain a final screening result as decision suggestion information.
The maximum value in the decision suggestion information represents the repairing technology most suitable for the polluted site, and the technology can be used for decontaminating the soil of the polluted site. .
On the basis of the above technical solution, as shown in fig. 4, the hybrid type processing with a level higher than the HB-SIR specifically includes:
first, a repair technique matrix a ═ a is constructed1,A2…Ai…AmC and attribute matrix C ═ C1,C2…Ci…Cn}，
tij(tij L,tij M,tij U) Is shown in repair technique AiAttribute ofj，
Establishing a decision matrix D ═ tij(tij L,tij M,tij U)]m×n；
Then, a positive and negative ideal scheme is constructed
The positive idea scheme is as follows:
Figure BDA0001843599110000121
negative ideal scheme:
Figure BDA0001843599110000122
and then constructing a standard advantage and disadvantage difference information matrix
Advantage difference information matrix:
Figure BDA0001843599110000123
a disadvantage difference information matrix:
Figure BDA0001843599110000124
Figure BDA0001843599110000125
representing two distance calculation values of triangular fuzzy numbers;
wherein, t1＝(t1 L,t1 M,t1 U)，t2＝(t2 L,t2 M,t2 U)；
The standard advantage difference information matrix X ═ Xij]m×n；
The standard disadvantage difference information matrix Y ═ Yij]m×n；
Wherein the content of the first and second substances,
Figure BDA0001843599110000126
in the formula:
Figure BDA0001843599110000127
is a dominant difference information matrix parameter, satisfies
Figure BDA0001843599110000128
Figure BDA0001843599110000129
For the parameters of the inferior difference information matrix, satisfy
Figure BDA00018435991100001210
Figure BDA00018435991100001211
Figure BDA00018435991100001212
Figure BDA0001843599110000131
Figure BDA0001843599110000132
Thirdly, constructing a dominance and disadvantage matrix
Each attribute C of Ai relative to positive and negative ideal schemesjIndex of superiority of
Figure BDA0001843599110000133
Index of disadvantage
Figure BDA0001843599110000134
Wherein
Figure BDA0001843599110000135
Is a preference function;
the advantage matrix is: s ═ Sj(Ai)]m×n；
A disadvantage matrix: i ═ Ij(Ai)]m×n；
Finally, obtaining a screening result
Dominant flow
Figure BDA0001843599110000136
Stream of inferior momentum
Figure BDA0001843599110000137
Screening techniqueOperation AiOf (5)n(Ai)＝Υ＞(Ai)-Υ＜(Ai)。
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is intended to include such modifications and variations.

Claims (8)

1. A screening method for a radioactive contaminated soil remediation technology comprises the following steps:
establishing a primary screening index system and a secondary screening index system of the radioactive contaminated soil remediation technology,
based on the system, the repairing technology screening treatment is carried out, then the screening result of the radioactive contaminated soil repairing technology is obtained through the weighted calculation of the primary screening result and the secondary screening result,
wherein:
the repair technology screening process comprises the following steps:
primary screening processing, collecting polluted site information to obtain polluted site data, eliminating unsuitable restoration technology, sorting suitable restoration technology based on the primary screening index system to obtain primary screening sorting result, eliminating unsuitable restoration technology for polluted site condition,
secondary screening treatment, namely performing sorting treatment on the primary screening sorting result on the basis of a secondary screening index system, and screening out a repairing technology suitable for a polluted site through cost benefit analysis to obtain a secondary screening sorting result;
the preliminary screening index system is divided into an index layer, a criterion layer and a target layer, the levels are sequentially increased,
criterion layer A1The method is used for reflecting the polluted site information, and the preset index layer comprises the following specific indexes:
level of radioactive contamination A11Type A of contaminated soil12Radioactive contamination nuclide A13pH value A of the contaminated soil14Polluted soilSoil humidity A15Soil organic carbon content A16Soil cation substitution amount A17Hydraulic conductivity coefficient A18；
Criterion layer A2The method is used for reflecting the plant restoration parameters, and the index layer of the method is preset to comprise the following specific indexes:
vegetation coverage rate A21Total N content A of soil22Total P content A of soil23Clay content A24Content of powder particles A25；
Criterion layer A3The method is used for reflecting the repair budget information, and the preset index layer comprises the following specific indexes:
soil remediation estimated time A31Soil remediation estimation cost A32；
The secondary screening index system is divided into an index layer, a standard layer and a target layer, the levels are sequentially increased,
criterion layer B1The method is used for reflecting environment cost information, and the preset index layer comprises the following specific indexes:
secondary pollution B11Environment residual capacity B12；
Criterion layer B2The method is used for reflecting technical cost information, and the preset index layer comprises the following specific indexes:
degree of technical maturity B21Repair efficiency B22Repair time B23；
Criterion layer B3The method is used for reflecting economic benefit cost information, and the preset index layer comprises the following specific indexes:
occupational irradiation B31And a unit time fee B32。
2. The screening method for radioactive contaminated soil remediation technology of claim 1, wherein: and establishing a primary screening index system and a secondary screening index system of the radioactive contaminated soil remediation technology based on the survey result of the contaminated soil site.
3. The screening method for radioactive contaminated soil remediation technology of claim 1, wherein: the preliminary screening index system and the secondary screening index system are established and then store corresponding information in a digital form, wherein the digital form includes but is not limited to a form of a database.
4. The screening method for radioactive contaminated soil remediation technology of claim 3, wherein: the importance of each parameter is different for the screening and repairing technology, the importance is introduced to carry out weight division on the parameters, and an importance matrix is constructed.
5. The screening method for radioactive contaminated soil remediation technology of claim 4, wherein: in the primary screening processing and the secondary screening processing, importance calculation and deviation calculation are sequentially carried out, wherein:
the calculation of the importance degree includes:
solving the importance matrix to obtain the maximum eigenvalue lambda max of the matrix and the corresponding eigenvector,
when the number n of the screening index parameters of the repair technology is less than the maximum characteristic value, a consistency check index is further introduced
Figure FDA0002627312130000021
And a random index RI, which is related to the matrix dimension, determines the matrix consistency,
when the consistency ratio is
Figure FDA0002627312130000022
The specification matrix is within an acceptable range,
according to the matrix, weights and weight sequences of screening indexes of the repair technologies in the primary screening and secondary screening processes are obtained through calculation;
the calculation of the degree of deviation includes:
the deviation degree is calculated by adopting a mixed type method with the grade higher than HB-SIR so as to overcome the difference between different types of attribute values required by screening of the radioactive contaminated soil remediation technology.
6. The screening method for radioactive contaminated soil remediation technology of claim 5, wherein: in the preliminary screening process, first, quantitative parameter deviation calculation is performed:
level of radioactive contamination A11pH value A of the contaminated soil14Humidity A of contaminated soil15Soil organic carbon content A16Soil cation substitution amount A17Hydraulic conductivity coefficient A18Vegetation coverage rate A21Total N content A of soil22Total P content A of soil23Clay content A24Content of powder particles A25Soil restoration estimation time A31And estimated cost of soil remediation A32Belongs to the field of quantitative parameters,
introducing degree of deviation in primary screening process
Figure FDA0002627312130000031
To describe the contaminated site parameter x0The degree of conformity with the optimal parameter x of the repair technique,
then, calculating the deviation degree of qualitative parameters:
contaminated soil type A12Radioactive contamination nuclide A13Belongs to the qualitative parameter, and belongs to the technical field of the qualitative parameter,
adopting qualitative deviation degree according to the ratio of satisfying number n and not satisfying number m to corresponding parameter in database
Figure FDA0002627312130000033
In the description that follows,
dividing the deviation degree of the preliminary screening quantitative and qualitative parameters obtained by calculation into 7 grades to obtain corresponding triangular fuzzy numbers,
corresponding grade information is obtained according to the triangular fuzzy number,
when one grade I or II appears, the corresponding repairing technology is removed and secondary screening is not carried out,
when the grade is III or IV and appears more than three times and does not contain three times, the corresponding repairing technology is removed and secondary screening is not carried out,
the restoration technology with the grade higher than V adopts an HB-SIR method to obtain a primary screening sorting score R1。
7. The screening method of radioactive contaminated soil remediation technology of claim 6, wherein: in the secondary screening process, firstly, qualitative parameter deviation degree calculation is carried out:
secondary pollution B11Environment residual capacity B12And degree of technical maturity B21Belongs to the qualitative parameter, and belongs to the technical field of the qualitative parameter,
the restoration technology obtained by primary screening is combined with the actual situation of the site and the historical restoration experience, the conformity degree of the restoration technology and the parameters is graded, the grading is calculated by percentage, the grading obtaining quantity is not less than 5,
and respectively calculating the average value E and the standard deviation S according to the grading result to obtain a grading data discrete coefficient:
Figure FDA0002627312130000032
set μ to 10% as the dispersion limit,
when mu is smaller than the value, all the score average values are adopted as the values of the corresponding items,
when mu is larger than the value, a method of removing the maximum value and the minimum value of the corresponding parameter score under the corresponding repair technology and then carrying out average processing on the residual value is adopted,
the scoring results are divided by good, medium, passing and difference, corresponding to discrete coefficient values of [90,100 ], [80,90 ], [70,80 ], [60,70 ], [ 0,60 ],
then, quantitative parameter deviation calculation is carried out:
repair efficiency B22Repair time B23Occupational irradiation B31And a unit time fee B32Belongs to the field of quantitative parameters,
the lowest cost and the highest cost of a certain repair technology under a unit area are respectively set as F1And F2The shortest and longest repair times are T1And T2The strongest and weakest occupational exposure are respectively1And2the lowest and highest repair efficiencies are respectively H1And H2；
The estimated cost of a certain polluted site arranged under a unit area is F0Predicted repair time T0The occupational irradiation produced is0And the estimated repair efficiency is H0；
Then:
Figure FDA0002627312130000041
the distance between the estimated cost and the highest cost and the lowest cost of the unit area under the repairing technology is used for representing the quality degree of the repairing technology relative to the polluted site;
Figure FDA0002627312130000042
estimating the distance between the repair time and the shortest/longest repair time under the repair technology;
Figure FDA0002627312130000043
estimating the distance between the occupational irradiation and the strongest/weakest occupational irradiation under the restoration technology;
Figure FDA0002627312130000044
predicting the distance between the repair efficiency and the lowest/highest repair efficiency under the repair technology;
wherein:
the estimated restoration time, restoration efficiency and occupational irradiation dose are given professional guidance values by a soil restoration expert,
the pollution cost is given a guidance value by cost accounting personnel and a soil remediation expert together;
the set k ═ { f, t, gamma, eta } is adopted to express the distance ratio of each item of unit area repairing cost, repairing time, repairing efficiency and occupational irradiation dose,
dividing the deviation degree of the secondary screening quantitative and qualitative parameters obtained by calculation into 5 grades to obtain corresponding triangular fuzzy numbers,
obtaining secondary screening sorting score R by adopting HB-SIR method2。
8. The screening method for radioactive contaminated soil remediation technology of claim 7, wherein: ranking score R by preliminary screening1And a secondary screening ranking score R2Based on the results of the two screenings, the w [ R ] is given1,R2]Weighting processing is carried out according to the weight proportion of {0.35,0.65} to obtain a final screening result as decision suggestion information,
the maximum value in the decision suggestion information represents the repairing technology most suitable for the polluted site, and the technology can be used for decontaminating the soil of the polluted site.
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