基于DESYRE模型的污染场地修复决策研究

Research of Decision for Contaminated Site Remediation Based on DESYRE Model

  • 摘要: 利用DESYRE模型对中国北方某污染场地的修复问题进行研究,在综合分析场地的污染物分布状况、污染物毒理性质和暴露途径的基础上,确定了污染物在不同土地使用方式下的风险等级分布;利用已有的修复技术数据库,筛选出较好的修复技术,并对修复效果进行模拟,提供修复技术选择和场地使用方案制定的依据。结果表明,该场地的最佳用地方式为居住用地或娱乐用地,清挖/处理技术与土壤固化/稳定技术(异位)配合应用修复效果较好。DESYRE模型应用结果较为理想,可以对该模型做进一步改进,使之更符合中国的实际情况。

     

    Abstract: The DESYRE model developed by CVR, Italy was applied to investigate the remediation of a contaminated site in North China. After a comprehensive analysis of the status of pollutant distribution, pollutant toxicity and exposure pathways, the risk level distribution under different land use scenarios were determined. Several good remediation technologies were screened from existing remediation technologies database and the remediation effects were simulated to provide scientific basis for selecting remediation technologies and formulating land use scenario. The results showed that for the site was most suitable for residential and recreation land uses, and the combination of excavation treatment and solidification/stabilization ex-situ technologies was the better for remediation. The DESYRE model could be suitable for sustainable management of contaminated sites in China, although it needs some modifications to adapt to the actual management context in China.

     

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