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A membrane performance comprehensive evaluation method based on an analytic hierarchy process

An analytic hierarchy process and comprehensive evaluation technology, applied in the field of membrane performance evaluation, which can solve the problems of inconsistent testing methods, lack of comparability of data, and difficulty in selection.

Inactive Publication Date: 2019-02-12
BEIJING DRAINAGE GRP CO LTD
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Problems solved by technology

Conventional hollow fiber membrane performance evaluation indicators and their measurement methods are not comprehensive and meticulous. Specifically, there are two problems: one is that some test methods are not uniform, resulting in a lack of comparability of data provided by various membrane manufacturers; There are no clear indicators or methods to characterize the important performances that are concerned in practical applications, causing confusion for actual users in the selection of membranes

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  • A membrane performance comprehensive evaluation method based on an analytic hierarchy process
  • A membrane performance comprehensive evaluation method based on an analytic hierarchy process
  • A membrane performance comprehensive evaluation method based on an analytic hierarchy process

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specific Embodiment

[0069] (1) Establish a comprehensive evaluation index system for membrane performance.

[0070] According to the factors affecting the membrane performance, construct the indicator hierarchy:

[0071] Target layer: C = {film properties};

[0072] Middle layer: cj={c 1 , c 2 , c 3 , c 4 , c 5}={Separation and penetration performance, chemical stability, anti-pollution performance, mechanical properties, membrane-making process};

[0073] Scheme layer: c 1j ={c 11 , c 12 , c 13 , c 14 , c 15}={Pure water flux, maximum pore size, average pore size, pore size distribution, porosity};

[0074] c 2j ={c 21 , c 22 , c 23}={acid resistance, alkali resistance, chlorine resistance};

[0075] c 3j ={c 31 , c 32 , c 33}={Contact angle, water permeability drop rate, chemical cleaning recovery};

[0076] c 4j ={c 41 , c 42 , c 43 , c 44}={tensile strength at break, elongation at break, burst strength, fatigue resistance};

[0077] c 5j ={c 51 , c 52 , c 53 , ...

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Abstract

The invention relates to a membrane performance comprehensive evaluation method based on an analytic hierarchy process (AHP). The method comprises the steps of according to the main influence factorsof the membrane performance, adopting the AHP to construct an index hierarchy structure and calculating the weight, and then combining an expert questionnaire method to determine the weight; introducing a membership function in the evaluation; constructing a membership matrix by dividing the evaluation grade boundary and according to the evaluation index detection value; and obtianig the membraneperformance membership grade and the comprehensive score by combining the weights. The method of the invention has the advantages of comprehensive index, reasonable system, small subjective influence,and the like, and simultaneously has the functions of evaluation and comparison, and has wide application prospect in membrane performance evaluation.

Description

technical field [0001] The invention relates to the field of membrane performance evaluation, and more specifically relates to a method for comprehensive evaluation of membrane performance based on analytic hierarchy process. Background technique [0002] As the country attaches great importance to water resources, water quality discharge and reuse standards are becoming more and more stringent. Most of the traditional water treatment methods can no longer meet the reuse requirements. Membrane technology has high separation efficiency, small footprint, and stable water quality. It has become the preferred method for technical and scale upgrading of municipal sewage treatment. Membrane bioreactor (MBR) is a new sewage treatment process that combines membrane separation technology and biological treatment. For MBR process, hollow fiber membrane is the most commonly used membrane product type. Hollow fiber membranes are widely used in large-scale MBR projects due to their adva...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q10/06
CPCG06Q10/06393
Inventor 冀春苗王晓爽常江江梅王浩张孟哲孟春霖
Owner BEIJING DRAINAGE GRP CO LTD
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