酸碱调控对泥浆反应去除土壤中多环芳烃的影响研究

Effects of Soil pH Regulation on PAHs Removal from Soil by Slurry Reaction

采用摇瓶试验模拟研究了酸碱调控对泥浆反应去除污染土壤中多环芳烃的影响，结果表明，泥浆反应对污染土壤中的多环芳烃具有一定的去除效果，长期污染土壤中多环芳烃的去除率为10．6％-20．7％，模拟污染土壤中的去除率为37．4％～42．1％：酸碱调控对不同性质的多环芳烃的去除影响不同，整体上看，酸性条件有利于高环（五环和六环）多环芳烃的去除，而中性条件有利于低环（三环和四环）多环芳烃的去除。在实际修复中，根据污染土壤中多环芳烃的组成进行适当的酸碱调控，可以促进污染土壤的快速修复。

A simulation experiment was conducted to investigate the effect of soil pH regulation on removal of polycyclic aromatic hydrocarbons （PAHs） by slurry reaction. The results showed that slurry reaction was effective in PAIls removal from contaminated soil. About 10.6% to 20.7% of total PAHs were removed from the long-term contaminated soil, and about 37.4% to 42.1% were removed from the simulated contaminated soil, The effects differed from different PAHs, In brief, acidic condition was beneficial for 5-ring and 6-ring PAHs removal, and neutral condition was beneficial for 3-ring and 4-ring PAHs removal. Proper soil pH regulation based on the soil PAHs component would be beneficial for the remediation of contaminated soil in practice.