Carlon Claudio, Critto Andrea, Ramieri Emiliano, Marcomini Antonio
Consorzio Venezia Ricerche, Via della Libertà 5-12, I-30175 Marghera, Venice, Italy.
Integr Environ Assess Manag. 2007 Apr;3(2):211-22. doi: 10.1897/ieam_2006-007.1.
DESYRE (DEcision Support sYstem for the REqualification of contaminated sites) is a GIS-based decision support system (DSS) specifically developed to address the integrated management and remediation of contaminated megasites (i.e., large contaminated areas or impacted areas characterized by multiple site owners and multiple stakeholders). In the DESYRE conceptual design and development the main aspects pertaining to a remediation process--analysis of social and economic benefits and constrains, site characterization, risk assessment, selection of best available technologies, creation of sets of technologies to be applied, analysis of the residual risk, and comparison of different remediation scenarios--were included. The DESYRE DSS is a GIS-based software composed of 6 interconnected modules. In the characterization module, chemical and hydrogeological data are organized in a relational database and contaminants' distributions are mapped by using geostatistic tools. The socioeconomic module addresses the socioeconomic constraints though a fuzzy logic analysis to select the best land use. The risk assessment module is divided into 2 phases. In the preremediation phase, an original procedure allows assessing and representing the spatial distribution of risks posed by contaminants in soil and groundwater, providing a risk-based zoning of the site. Then, in the technology assessment module, a selection of suitable technologies and creation of different technology sets, taking into account both technical requirements and site-specific features, are performed by experts supported by multicriteria decision analysis tools. In the postremediation risk assessment, a simulation of applied technologies provides residual risk maps with related uncertainty maps. Finally, in the decision module, alternative remediation scenarios are described by a set of indices and can be compared and ranked by interested stakeholders using multicriteria decision analysis methodologies. The paper highlights original procedural steps and functionalities of DESYRE nd analyzes its main points of strength and potentialities, as well as limits.
DESYRE（污染场地再平衡决策支持系统）是一个基于地理信息系统（GIS）的决策支持系统（DSS），专门为解决污染大型场地（即由多个场地所有者和多个利益相关者构成的大面积污染区域或受影响区域）的综合管理和修复而开发。在DESYRE的概念设计和开发过程中，纳入了与修复过程相关的主要方面，包括社会和经济效益及制约因素分析、场地特征描述、风险评估、最佳可用技术选择、待应用技术组合的创建、残余风险分析以及不同修复方案的比较。DESYRE决策支持系统是一个基于GIS的软件，由6个相互连接的模块组成。在特征描述模块中，化学和水文地质数据被组织到一个关系数据库中，并使用地质统计工具绘制污染物分布地图。社会经济模块通过模糊逻辑分析来解决社会经济制约因素，以选择最佳土地用途。风险评估模块分为两个阶段。在修复前阶段，一个原始程序允许评估和表示土壤和地下水中污染物造成的风险的空间分布，提供基于风险的场地分区。然后，在技术评估模块中，由多标准决策分析工具支持的专家会考虑技术要求和场地特定特征，选择合适的技术并创建不同的技术组合。在修复后风险评估中，对应用技术的模拟会提供带有相关不确定性地图的残余风险地图。最后，在决策模块中，替代修复方案由一组指标描述，感兴趣的利益相关者可以使用多标准决策分析方法进行比较和排序。本文重点介绍了DESYRE的原始程序步骤和功能，并分析了其主要优点、潜力以及局限性。
