某污染场地土壤与地下水协同修复阈值

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中图分类号：TP311.1;X52;X53 文献标志码：A

Abstract：It is scientifically significant to establish soil remediation standards for the synergistic management of soil and groundwater. Previous studies often assumed that contaminant sources directly affect the saturated zone，with litle consideration for the lag，attenuation，and variations in pollutant sources during migration in the vadose zone. Addressing this issue，in this paper coupling the onedimensional vertical transport analytical solution of pollutants in soil with the three-dimensional transport analytical solution of polltants in groundwater，the influence of factors affecting polutant migration and transformation on the synergistic remediation threshold of soil and groundwater is investigated. The results indicate that without considering the synergistic remediation of soil and groundwater，based on the screening values of soil for the first category of land use in current standards， benzene and chlorobenzene should be remediated to 1mg/kg and 68mg/kg respectively. Considering the synergistic remediation of soil and groundwater and aiming for compliance with downstream groundwater quality standards， the calculated synergistic remediation thresholds for soil and groundwater are 0.150mg/kg and 150.000mg/kg respectively. Failure to consider the synergistic remediation of soil and groundwater may result in inadequate or excessive soil remediation at the site.

Key words： contaminated site;soil and groundwater synergistic remediation;threshold calculation; analytic solution;coupled simulation

0 引言

土壤和地下水污染是如今社会普遍关注的环境问题。（剩余14560字）