Applicablesoil and groundwater remediation based on site risk assessment

采用数值分析方法模拟了土壤和地下水污染场地中有害物质的迁移和净化效果。还在同一地点进行了健康风险分析。首先，采用三维数值模拟研究了有机砷化合物污染地下水的运移过程。其次，提出了一种新的原位安全壳与地下水抽水相结合的方法，并对其降低风险的效果进行了检验。最后，在挥发性有机氯污染地下水的情况下，在原位生物修复现场的生物降解效果和健康风险的变化特征进行了估计。

The migration of hazardous substances and purification effects at soil and groundwater contaminated sites were simulated by numerical analysis. Health risk analyses were also conducted at the same sites. First, the transport processes of groundwater contamination by organoarsenic compounds was examined using a three-dimensional numerical simulation. Secondly, anew in-situ containment combined with groundwater pumping was proposed, and also its risk reduction effect was examined. Finally, in the case of groundwater contamination by volatile organochlorine compounds, the variability characteristics of biodegradation effect and health risk were estimated at in-situ bioremediation sites.