CN109508854A - A kind of multi-level comprehensive evaluation method of film group device performance - Google Patents
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Abstract
The present invention relates to a kind of multi-level comprehensive evaluation methods of film group device performance, its method is: according to the major influence factors of film group device performance, distinguishing hierarchy is carried out in terms of film group device economic cost, technical performance and industrialization promotion, index weights are determined using analytic hierarchy process (AHP), in conjunction with performance and its comprehensive performance of other mathematical methods evaluation film group device in terms of different stage.The present invention includes the advantage that evaluation index is comprehensive, evaluation method is reasonable, is with a wide range of applications in terms of film group device performance evaluation.The present invention is applied to evaluation result of the film group device in terms of different performance, can meet user according to project demands and select suitable film product.
Description
Technical field
The present invention relates to film group device performances areas, and more specifically, in particular to the multistage of a kind of film group device performance is comprehensive
Evaluation method.
Background technique
With the fast development of economy and urbanization, China's water pollution and shortage of water resources problem are got worse.Sewage is deep
Degree processing and regeneration are the important channels for mitigating the pollution of China's Urban Water Environment, solving city water resource crisis.Film process
Technology is shown one's talent from every further treatment technique with its high effluent characteristics, treatment effect stabilization, the advantage of use flexibly,
Being integrated neutralizing, certainly water pollution and shortage of water resources problem provide more economical reliable technical solution.Using sewage treatment
City and trade effluent advanced treating and recycling sewage generated by making may be implemented in membrane bioreactor (MBR) technology, is that China is dirty
Water process industry realizes that leapfrog development provides condition.Therefore the application prospect of membrane technology in these areas is more and more wide,
For MBR technique, hollow-fibre membrane is most-often used film product form.Hollow-fibre membrane is due to its packed density height, big
It is widely used in type MBR engineering.
In film application aspect, the economic cost and technical performance of film are all film producer and the focal point of user, are transported in film
Row aspect, separation through performance, mechanical strength, chemical stability, resistance tocrocking, producing water water quality decide film service performance and
In the service life, in terms of economic cost, land occupation, cost, aeration energy consumption and the maintenance clean of film group device decide the cost of film.Due to each
Kind film group device respectively has superiority and inferiority in terms of different performance, how to combine the different performance index of film group device, integrates to film group device
Evaluation, and film group device progress preferably has a very important significance film using enterprise according to comprehensive evaluation result.
Summary of the invention
In view of the above-mentioned problems, the contents of the present invention are to provide a kind of multi-level comprehensive evaluation method of film group device performance.This hair
The bright major influence factors according to film group device performance carry out in terms of film group device economic cost, technical performance and industrialization promotion
Distinguishing hierarchy determines index weights using analytic hierarchy process (AHP), in conjunction with other mathematical methods evaluation film group device in different stage side
The performance and its comprehensive performance in face.
A kind of multi-level comprehensive evaluation method of film group device performance has following steps:
It (1) is that film group device performance divides layer module according to analytic hierarchy process (AHP) (AHP) according to index feature；
(2) each evaluation index is calculated to the weight of a level thereon according to AHP method；
(3) parameter that three approach obtains film group device performance is provided according to test, detection and producer；
(4) superiority and inferiority according to different film group device performance parameters, is classified each index, establish evaluation criterion because of manifold and
Its corresponding Comment gathers, Comment gathers vector；
(5) different evaluation functions is chosen according to the property of different indexs；
(6) according to the data of film group device performance detection, applicating evaluating function constructs evaluations matrix；
(7) according to evaluations matrix, in conjunction with weight sets, the single-stage evaluation result of film group device performance and comprehensive is calculated by different level
It can evaluation result.
In (1) step, the layer module is divided into destination layer and participates in providing the multistage factor or index of destination layer,
The middle factor is the classification performance of film group device, and index is the specific performance of film group device, totally 9 factors, 24 evaluation indexes.Destination layer
For film group device performance, the first order factor is economic cost, industrialization promotion and technical performance；The corresponding second level of economic cost refers to
It is designated as ton a water land occupation, film group device acquisition expenses, film renewal cost, aeration energy consumption, cleaning agent expense, industrialization promotion is corresponding
Second level index is production scale, engineer application scale, quality guarantee, and the corresponding second level factor of technical performance is separation permeability
Energy, chemical stability, antifouling property, mechanical performance, producing water water quality；Separating the corresponding third level index of through performance is pure water
Flux, critical flux, pore-size distribution, the corresponding third level index of chemical stability are acid resistance, alkali resistance, chlorine resistance, anti-pollution
Metachromia can corresponding third level index be that contact angle, permeability rate decrease speed, chemical cleaning are restorative, mechanical performance corresponding the
Three-level index is break-draw strength, elongation at break, burst strength, fatigue durability, the corresponding third level index of producing water water quality
For turbidity, SDI, excrement colibacillus group.Specifically it is shown in Table 1.
1 film group device performance hierarchical structure table of table
In (3) step, the acquiring way of each index parameter of evaluation is participated in are as follows: film group device runs pilot plant test, membrane material
Expect that laboratory testing and film producer provide, specific method sees attached list 2, table 3, table 4.
2 pilot-plant of table or production run Testing index and method (film group device detection)
3 instrument of table or equipment Testing index and method (film wire detection)
4 film producer of table provides
In step (4), each selecting index n different parameters are denoted as V={ v as opinion rating1, v2, ...,
vn, corresponding Comment gathers and Comment gathers vector S={ s1, s2..., sn}。
In step (5), evaluation index is divided into positive index and reverse index, wherein pure water flux, critical flux, acidproof
Property, alkali resistance, chlorine resistance, chemical cleaning be restorative, break-draw strength, elongation at break, burst strength, fatigue durability, life
Production scale, engineer application scale, quality guarantee are positive index, and the land occupation of ton water, cleaning agent expense, pore-size distribution, connects aeration energy consumption
Feeler, permeability rate decrease speed, turbidity, SDI, excrement colibacillus group are reverse index.
The evaluation function that each index determines includes positive function, reverse function, the table of the corresponding evaluation function of five grades
Up to formula are as follows:
(1) positive index:
First grade: to j=1:
To j=(1 < j < 5), j=2,3,4:
To j=5:
(2) reverse index:
First grade: to j=1:
To j=(1 < j < 5), j=2,3,4:
To j=5:
(1), r (u in (2)j) it is evaluation function, uiIndicate the measured value of some evaluation index, vj-1,vj,vj+1It respectively indicates
Jth -1, j of the evaluation index, j+1 grade standard value.
Superiority and inferiority according to different film group device performance parameters is classified each index, applicating evaluating function building evaluation square
Battle array；
The set of factors U of indexs at different levelsiTo Comment gathers VjIt regards a mapping as, can determine evaluations matrix: R=
(rij)m×n, rijFor about factor uiWith opinion rating vjDegree.
The opinion rating and comprehensive score of destination layer determine by the first order factor, and each rank is subordinate to grade and comprehensive
Divide and is determined again by the other factor of its next stage or index；
It is synthesized according to weight sets W with fuzzy evaluating matrix R, carries out overall merit and seek evaluate collection B:
(1) second level factor is determined by third level index, opinion rating:
According to B=max (bij1,bij2,bij3,bij4,bij1), choosing the maximum corresponding grade of numerical value in evaluation set is to comment
The affiliated grade of valence object；
(2) first order factor is determined by the second level factor or index, opinion rating:
(3) destination layer is determined by the first order factor, opinion rating:
Choose the affiliated grade that the maximum corresponding grade of numerical value in evaluation set is evaluation object；
B is synthesized with evaluate collection vector S, obtains overall merit score:
G=BST=(b1,b2,b3,b4,b5)·(s1,s2,s3,s4,s5)T。
Evaluation index of the present invention is comprehensive, evaluation method is reasonable, before having a wide range of applications in terms of the film group device performance evaluation
Scape can meet user according to project demands and select suitable film product using evaluation result of the film group device in terms of different performance.
Detailed description of the invention
Fig. 1 is technology path schematic diagram of the invention.
Specific embodiment
Below with reference to Fig. 1 and embodiment, the invention will be further described.
As shown in Figure 1, a kind of multi-level comprehensive evaluation method of film group device performance, has following steps:
It (1) is that film group device performance divides layer module according to analytic hierarchy process (AHP) (AHP) according to index feature；
(2) each evaluation index is calculated to the weight of a level thereon according to AHP method；
(3) parameter that three approach obtains film group device performance is provided according to test, detection and producer；
(4) superiority and inferiority according to different film group device performance parameters, is classified each index, establish evaluation criterion because of manifold and
Its corresponding Comment gathers, Comment gathers vector；
(5) different evaluation functions is chosen according to the property of different indexs；
(6) according to the data of film group device performance detection, applicating evaluating function constructs evaluations matrix；
(7) according to evaluations matrix, in conjunction with weight sets, the single-stage evaluation result of film group device performance and comprehensive is calculated by different level
It can evaluation result.
Application example:
(1) film group device performance hierarchy Model is established.
On the basis of analyzing influence film group device comprehensive performance, by its influence factor from economic cost, technical performance and production
Industryization promotes three aspects and resolves into 3 levels from top to down according to different attribute, and each factor of same layer is subordinated to one
The factor of layer has an impact to upper layer factor, while dominating next layer of factor or the effect by lower layer factors again.
Destination layer: U={ film group device performance }；
The first order factor: uj={ u1,u2u3}={ economic cost, technical performance, industrialization promotion }.
It is subordinated to the second level index of economic cost: u1j={ u11,u12,u13,u14The land occupation of }={ ton water, film group device are purchased
Expense, film renewal cost, film renewal cost, cleaning agent expense }.
It is subordinated to the second level factor of technical performance: u2j={ u21,u22,u23,u24,u25}={ separates through performance, chemistry
Stability, antifouling property, mechanical performance, producing water water quality }.
It is subordinated to the second level index of industrialization promotion: u3j={ u31,u32,u33}={ production scale, engineer application scale,
Quality guarantee }.
The third level for being subordinated to separation through performance, chemical stability, antifouling property, mechanical performance and producing water water quality refers to
Mark:
u21j={ u211,u212,u213}={ pure water flux, critical flux, pore-size distribution }；
u22j={ u221,u222,u223}={ acid resistance, alkali resistance, chlorine resistance }；
u23j={ u231,u232,u233}={ contact angle, permeability rate decrease speed, chemical cleaning are restorative }；
u24j={ u241,u242,u243, u244}={ break-draw strength, elongation at break, burst strength, fatigue durability }；
u25j={ u251,u252,u253}={ turbidity, SDI, excrement colibacillus group }.
(2) weight is determined.
In the present invention, weight is determined using AHP method, comprising the following steps:
A) Paired comparison matrix is constructed: same for being subordinated to (or influence) since the first order factor of hierarchy Model
Each factor on one upper layer compares dimensional configurations Paired comparison matrix with Paired Comparisons and 1-9, until (third level refers to lowest level
Mark).
B) it calculates weight vector and does consistency check: Maximum characteristic root and corresponding spy are calculated for each Paired comparison matrix
Vector is levied, does consistency check using coincident indicator, random index and consistency ratio.If upchecking, feature
Vector is weight vector after normalizing, if not passing through, need to reconfigure in pairs relatively battle array.
Weight vectors of each factor of the first order relative to destination layer are as follows: W={ w1,w2,,w3}。
The weight vectors of each factor in the second level or index relative to its corresponding first order factor are as follows:
{u11,u12,u13,u14Weight W relative to economic cost1={ w11,w12,w13,w14}；
{u21,u22,u23,u24,u25Weight W relative to technical performance2={ w21,w22,w23,w24,w25}；
{u31,u32,u33Weight W relative to industrialization promotion3={ w31,w32,w33}。
Weight vectors of each index of the third level relative to its corresponding second level factor are as follows:
{u211,u212,u213Relative to the diactinic weight W of separation21={ w211,w212,w213}；
{u221,u222,u223Weight W relative to chemical stability22={ w221,w222,w223}；
{u231,u232,u233Weight W relative to antifouling property23={ w231,w232,w233}；
{u241,u242,u243,u244Weight W relative to mechanical stability24={ w241,w242,w243,w244}；
{u251,u252,u253Weight W relative to producing water water quality25={ w251,w252,w253}。
(3) detection parameters are obtained.
The approach of detection parameters is obtained to provide for film group device operation pilot plant test, membrane material laboratory testing and film producer,
Specific method is shown in Table 2, table 3, table 4 (table 2, table 3, table 4 in summary of the invention).
(4) evaluation criterion is established because of manifold and its corresponding Comment gathers, Comment gathers vector.
Superiority and inferiority according to different film group device performance parameters is classified each index, five different parameters of each selecting index
As standard value, forms evaluation criterion set of factors (evaluate collection), be denoted as V={ v1,v2,…,vn, correspondence Comment gathers it is excellent, it is more excellent,
It is good, generally, poor and comment score collection S={ s1、s2, s3, s4, s5}。
(5) degree of membership calculates.
Evaluation index is divided into positive index and reverse index, according to the actual parameter of each index and is subordinate to grade, answers
Degree of membership is calculated with membership function:
A) positive index:
First grade: j=1:
To j=(1 < j < 5), j=2,3,4:
To j=5:
B) reverse index:
To j=1:
To j=(1 < j < 5), j=2,3,4:
To j=5:
It is such as V={ 400,300,200,150,100 } for five grades of flux, flux detected value ui=260 belongs to v2
With v3Section, r (u1)=0, r (u2)=(200-260)/(200-300)=0.6, r (u3)=(260-300)/(200-300)
0.4, r (u4)=r (u5)=0.
Five grades of permeability rate decrease speed are V={ 1,2,3,4,5 }, and permeability rate decrease speed test value ui=1.3 belongs to
In v1With v2Section, r (u1)=(2-1.3)/(2-1)=0.7, r (u2)=(1.3-1)/(2-1)=0.3, r (u3)=r (u4)
=r (u5)=0.
(6) evaluations matrix is constructed.
Each single factor test is to Comment gathers { v1,v2,…,vnDegree of membership constitute evaluate collection be r=(r1, r2,r3,r4, r5)
Such as pure water flux, the evaluate collection which constitutes the degree of membership of Comment gathers { v1, v2, v3, v4, v5 } is
r211={ r2111,r2112,r2113,r2114,r2115}={ 0,0.6,0.4,0,0 },
Then m factor, the evaluations matrix that n grade is constituted are as follows:
Third level index constructs evaluations matrix to its corresponding second level factor:
Separate through performance:
Chemical stability:
Antifouling property:
Mechanical performance:
Producing water water quality:
The second level factor or index construct evaluations matrix to its corresponding first order index:
Economic cost:
Technical performance:
Industrialization promotion:
First order factor pair target layer building evaluations matrix:
(7) multi-level comprehensive evaluation.
It is synthesized according to weight sets W with evaluations matrix R, carries out overall merit and seek opinion rating collection B, by B and evaluation score
Vector S synthesis obtains synthesis and refers to score G
The second level factor determines by third level index, opinion rating:
Separate through performance: B21=W21·R21=(b211,b212,b213,b214,b215)；
Chemical stability: B22=W22·R22=(b221,b222,b223,b224,b225)；
Antifouling property: B23=W23·R23=(b231,b232,b233,b234,b235)；
Mechanical stability: B24=W24·R24=(b241,b242,b243,b244,b245)；
Producing water water quality: B25=W25·R25=(b251,b252,b253,b254,b255)。
The first order factor determines by the second level factor or index, opinion rating:
Economic cost: B1=W1·R1=(b11,b12,b13,b14,b215)；
Technical performance: B2=W2·R2=(b21,b22,b23,b24,b25)；
Industrialization promotion: B3=W3·R3=(b31,b32,b33,b34,b35)。
Destination layer determines by the first order factor, opinion rating:
Film group device comprehensive performance: B=WR=(b1,b2,b3,b4,b5)。
According to B=max (bij1,bij2,bij3,bij4,bij1), choosing the maximum corresponding grade of numerical value in evaluation set is to comment
The affiliated grade of valence object；
Every level-one synthesizes B with evaluate collection vector S, obtains the fuzzy aggregative index of every level-one: G=BST
Data are obtained according to method listed by table 2, table 3, table 4, compare two kinds of film group devices, i.e. film group device 1 and film group device 2, into
The above-mentioned evaluation of row:
Film group device 1:
Economic cost: B1=W1·R1=(b11,b12,b13,b14,b215)=(0.567,0.140,0.143,0.086,
0.065),
G1=B1·ST=(0.567,0.140,0.143,0.086,0.065) (100,90,80,70,60)T=90.6
Technical performance: B2=W2·R2=(b21,b22,b23,b24,b25)=(0.015,0.060,0.234,0.521,
0.170)
G2=B2·ST=(0.015,0.060,0.234,0.521,0.170) (100,90,80,70,60)T=72.3
Industrialization promotion: B3=W3·R3=(b31,b32,b33,b34,b35)=(0.564,0,0.436,0,0)
G3=B3·ST=(0.564,0,0.436,0,0) (100,90,80,70,60)T=91.3
Film group device comprehensive performance: B=WR=(0.372,0.088,0.224,0.225,0.091)
Overall merit score: G=BST=(0.372,0.088,0.224,0.225,0.091) (100,90,80,
70,60)T=84.3 film group devices 2:
Economic cost: B1=W1·R1=(b11,b12,b13,b14,b215)=(0.172,0.555,0.273,0,0),
G1=B1·ST=(0.172,0.555,0.273,0,0) (100,90,80,70,60)T=89.0
Technical performance: B2=W2·R2=(b21,b22,b23,b24,b25)=(0.558,0.246,0.05,0.110,
0.036)
G2=B2·ST=(0.558,0.246,0.05,0.110,0.036) (100,90,80,70,60)T=91.8
Industrialization promotion: B3=W3·R3=(b31,b32,b33,b34,b35)=(0,0,0.695,0.305,0)
G3=B3·ST=(0,0,0.695,0.305,0) (100,90,80,70,60)T=76.9
Film group device comprehensive performance: B=WR=(0.328,0.314,0.238,0.104,0.017)
Overall merit score: G=BST=(0.328,0.314,0.238,0.104,0.017) (100,90,80,
70,60)T=88.3
I.e. film group device 1,2 overall merit scores are respectively 84.3 points, 88.3 points, and 2 comprehensive performance of film group device is better than film group device
1。
The present invention is not limited to the above-described embodiments, anyone can obtain other various shapes under the inspiration of the present invention
The product of formula.It is all according to equivalent changes and modifications within the scope of the patent application of the present invention, all should belong to covering scope of the invention.
Claims (6)
1. a kind of multi-level comprehensive evaluation method of film group device performance, which is characterized in that according to the main influence of film group device performance because
Element carries out distinguishing hierarchy in terms of film group device economic cost, technical performance and industrialization promotion, is referred to using analytic hierarchy process (AHP) determination
Weight is marked, in conjunction with mathematical function, performance and its comprehensive performance of the film group device in terms of different stage is evaluated, there is following step
It is rapid:
It (1) is that film group device performance divides layer module according to analytic hierarchy process (AHP) (AHP) according to index feature；
(2) each evaluation index is calculated to the weight of a level thereon according to AHP method；
(3) parameter that three approach obtains film group device performance is provided according to test, detection and producer；
(4) superiority and inferiority according to different film group device performance parameters, is classified each index, establishes evaluation criterion because of manifold and its phase
Comment gathers, the Comment gathers vector answered；
(5) different evaluation functions is chosen according to the property of different indexs；
(6) according to the data of film group device performance detection, applicating evaluating function constructs evaluations matrix；
(7) it according to evaluations matrix, in conjunction with weight sets, calculates the single-stage evaluation result of film group device performance by different level and comprehensive performance is commented
Valence result.
2. a kind of multi-level comprehensive evaluation method of film group device performance according to claim 1, which is characterized in that the level
Module is divided into destination layer and participates in providing the multistage factor or index of destination layer, and wherein the factor is the classification performance of film group device, is referred to
It is designated as the specific performance of film group device, totally 9 factors, 24 evaluation indexes；Destination layer is film group device performance, and the first order factor is warp
Ji cost, industrialization promotion and technical performance；The corresponding second level index of economic cost is the land occupation of ton water, film group device purchase commodity
With, film renewal cost, aeration energy consumption, cleaning agent expense, the corresponding second level index of industrialization promotion be production scale, engineering
Using scale, quality guarantee, the corresponding second level factor of technical performance is separation through performance, chemical stability, antifouling property, machine
Tool performance, producing water water quality；Separating the corresponding third level index of through performance is pure water flux, critical flux, pore-size distribution, chemistry
The corresponding third level index of stability is acid resistance, alkali resistance, chlorine resistance, and the corresponding third level index of antifouling property is contact
Angle, permeability rate decrease speed, chemical cleaning are restorative, and the corresponding third level index of mechanical performance is break-draw strength, fracture
Elongation, burst strength, fatigue durability, the corresponding third level index of producing water water quality are turbidity, SDI, excrement colibacillus group.
3. a kind of multi-level comprehensive evaluation method of film group device performance according to claim 1, which is characterized in that step (4)
In, each selecting index n different parameters are denoted as V={ v as opinion rating1,v2,…,vn, corresponding Comment gathers and comment
Collect vector S={ s1, s2…,sn}。
4. a kind of multi-level comprehensive evaluation method of film group device performance according to claim 1, which is characterized in that the step
(5) in, evaluation index is divided into for positive index and reverse index, wherein pure water flux, critical flux, acid resistance, alkali resistance, resistance to
Chlorine, chemical cleaning be restorative, break-draw strength, elongation at break, burst strength, fatigue durability, production scale, engineering are answered
It is positive index with scale, quality guarantee, under the land occupation of ton water, aeration energy consumption, cleaning agent expense, pore-size distribution, contact angle, permeability rate
Reduction of speed degree, turbidity, SDI, excrement colibacillus group are reverse index.
5. a kind of multi-level comprehensive evaluation method of film group device performance according to claim 1, which is characterized in that according to different
The superiority and inferiority of film group device performance parameter is classified each index, determines that evaluation function, applicating evaluating function construct evaluations matrix；
The set of factors U of indexs at different levelsiTo Comment gathers VjIt regards a mapping as, can determine evaluations matrix: R=(rij)m×n,
rijFor about factor uiWith opinion rating vjDegree.
6. a kind of multi-level comprehensive evaluation method of film group device performance according to claim 1, which is characterized in that destination layer
Opinion rating and comprehensive score are determined that each rank is subordinate to grade and comprehensive score again by its next rank by the first order factor
The factor or index determine；
It is synthesized according to weight sets W with fuzzy evaluating matrix R, carries out overall merit and seek evaluate collection B:
(1) second level factor is determined by third level index, opinion rating:
According to B=max (bij1,bij2,bij3,bij4,bij1), choosing the maximum corresponding grade of numerical value in evaluation set is evaluation pair
The affiliated grade of elephant；
(2) first order factor is determined by the second level factor or index, opinion rating:
(3) destination layer is determined by the first order factor, opinion rating:
Choose the affiliated grade that the maximum corresponding grade of numerical value in evaluation set is evaluation object；
B is synthesized with evaluate collection vector S, obtains overall merit score:
G=BST=(b1,b2,b3,b4,b5)·(s1,s2,s3,s4,s5)T。
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