基于AHP-Entropy-TOPSIS的污染场地修复技术筛选方法研究

RESEARCH ON METHOD SELECTION OF POLLUTED SITE REMEDIATION TECHNOLOGY BASED ON AHP-Entropy-TOPSIS

污染场地修复技术筛选是一个多目标决策过程,需要综合考虑决策者的主观偏好与修复技术特征。分析了我国近年开展的596个污染场地修复案例,建立修复技术筛选指标体系与分级量化标准,将层次分析法(AHP)与熵值法(Entropy)结合,确定筛选指标组合权重,运用逼近理想解排序法(TOPSIS)筛选修复技术。以沈阳市某化工有限公司退役场地为例,分别以AHP法、Entropy法、AHP-Entropy组合法计权,筛选最适修复技术,比较其综合评价结果。结果表明:3种计权模式下,各指标的相对重要性显著不同,组合计权法既体现了决策者偏好,又反映了系统信息的贡献,具有较高的实用性和可行性。AHP-Entropy-TOPSIS筛选出的修复技术与该场地实际应用技术一致。

The screening of remediation technologies is a multi-objective decision-making process,that requires considering not only the preferences of decision makers,but also the performance of remediation technology.Based on 596 site cases remediated in China in recent years,this research constructed a screening index system for remediation technology as well as a quantitative approach for these indices.Moreover,the AHP(analytic hierarchy process)and entropy method were combined to determine index weights,and the TOPSIS(technique for order preference by similarity to ideal solution)was conducted to rank remediation technologies.An organic contaminated site in Shenyang was selected as the study area.To compare their performance,the AHP method,the Entropy method,and the AHP-Entropy combination method were carried out respectively to calculate the index weights,and then the optimal remediation technology was screened.Results showed that the index weights calculated by the three weighting approaches were significantly different,and the AHP-Entropy combination method can balance the subjective preference of the decision makers and the contribution of system information.The applicable remediation technology screened by AHP-Entropy TOPSIS is consistent with what was applied at the site.