基于模糊综合评估的污染场地可持续修复效果综合评价方法研究

污染场地修复的目的是消除土壤污染并实现再利用.为防止消极修复和过度修复带来的新的环境影响，本研究基于可持续修复理念，以系统科学地综合分析污染场地修复工程的可持续效果为研究目标，结合理论分析法和频度分析法确定污染场地可持续修复效果评价模型的候选评价指标，采用灰色关联度分析法对评价指标进行系统筛选，并应用AHP-熵权法计算推导出评价指标权重值，利用模糊综合评估(fuzzy comprehensive evaluation,FCE)结合评价标准体系和评价指标权重值构建了污染场地可持续修复综合评价方法，对我国东北地区某化工污染场地修复效果进行了综合评估.结果表明：在污染场地可持续修复综合评价中环境指标组合权重值(0.473 57)最大，其中土壤质量状况改善的权重(0.215 02)最高；健康风险削减和污染场地地价提升分别为社会和经济指标中的重要因素.实例验证中案例污染场地的最终可持续性评分为7.70分，在“良好”的评价区间内，与实际修复情况一致，结果可指导修复方案的优化.研究显示，构建的污染场地可持续修复综合评价方法具有可行性，可对污染场地修复方案的制定、比选以及修复后效果的综合评价提供技术支...

A Comprehensive Evaluation Method for Sustainable Remediation Effect of Contaminated Sites Based on Fuzzy Comprehensive Evaluation

The purpose of contaminated soil site remediation is to eliminate soil pollution and realize reuse. In order to eliminate the new environmental impact caused by negative and excessive restoration, this study aimed to systematically and scientifically analyze the sustainable effect of the restoration project of contaminated sites based on the concept of sustainable restoration. Combined with theoretical and frequency analysis, the candidate evaluation indexes of the evaluation model of the sustainable restoration effect of the contaminated sites were determined, and the evaluating indicator was systematically screened by the grey relational analysis method. The AHP-entropy weight method was used to calculate and deduce the weight value of the evaluation index. An evaluation method for sustainable remediation of contaminated sites was developed according to the Fuzzy Comprehensive Evaluation (FCE), the evaluation standard system, and the weight value of the evaluation index, which was further used to evaluate the remediation effect of a chemically contaminated site in northeast China. The results showed that the weight values of environmental indicators reached 0.473,57, which accounted for the largest score in the weight ratio of the three evaluation indicators of environment, economy and society in the environmental indicators. The largest weight ratio of soil quality improvement was 0.215,02, and the reduction of health risks and the increase in the land price of contaminated sites were important factors in social and economic indicators, respectively. The sustainability score of the contaminated site case was 7.70, which was in the evaluation range of ‘good’ points and consistent with the actual repairment. The results can guide the optimization of remediation plans. Therefore, the evaluation method for sustainable utilization and restoration of contaminated sites constructed in this study was feasible, and can provide technical support for the formulation and comparison of contaminated site restoration plans and comprehensive evaluation of post-restoration.