上海某地块多重污染土壤修复及其效果评估

Remediation and evaluation of multiple contaminated soil in Shanghai

上海某地块污染组分复杂,土壤中苯并(a)芘、二苯并(a,h)蒽、苯并(a)蒽、石油烃(C_(10)-C_(40))和铅均超过健康风险阈值。分别采用过硫酸钠氧化法、热脱附法和化学淋洗法进行修复处治,并通过采样与监测对污染整治与土壤修复效果作了分析评估。结果表明:该污染地块经清挖与修复达到预期目的,工程隔断措施切实有效。本研究的修复与评估技术方案可为类似工程提供借鉴参考。

The pollution components of a certain area in Shanghai are complex.Benzo(a)pyrene,dibenzo(a,h)anthracene,benzo(a)anthracene,petroleum hydrocarbons(C_(10)-C_(40))and lead in soil all exceeded health risk thresholds.Sodium persulfate oxidation,thermal desorption and chemical leaching were used for remediation and treatment,and the effects of pollution control and soil remediation were analyzed and evaluated by sampling and monitoring.The results show that the polluted plot has achieved the expected goal through clearing and restoration,and the engineering partition measures are effective.The technical scheme of repair and evaluation in this study can provide reference for similar projects.