甲苯在土壤地下水中迁移规律研究

Study on law of migration of toluene in soil and groundwater

石油泄漏导致甲苯等有机污染物污染土壤地下水,并且甲苯等石油类有机污染物对土壤地下水污染具有隐蔽性强、难以逆转等特点,污染治理难度大。因此,研究甲苯有机污染物在土壤地下水中运移规律是治理的关键。该文以某污染场地为研究区,以甲苯有机污染物为研究对象,考虑了淋滤、吸附的影响,采用模型计算方法,分析了甲苯在污染场地土壤地下水中迁移规律。结果表明:甲苯在土壤地下水中迁移过程中,淋滤作用对甲苯浓度变化影响显著;吸附影响下扩散作用及地下水位变化对甲苯迁移产生的影响均受到抑制。该文获得的甲苯在土壤地下水中迁移规律可为甲苯有机污染物污染场地修复提供依据。

Oil spills cause organic pollutants such as toluene to pollute soil and groundwater,and petroleum organic pollutants such as toluene have the characteristics of strong concealment and difficulty in reversing soil and groundwater pollution,and pollution control is difficult.Therefore,studying the transport law of toluene organic pollutants in soil and groundwater is the key to treatment.In this paper,taking a polluted site as the research area and toluene organic pollutants as the research object,considering the effects of leaching and adsorption,the model calculation method was used to analyze the migration law of toluene in the soil and groundwater of the contaminated site.The results showed that during the migration of toluene in soil and groundwater,leaching had a significant effect on the change of toluene concentration.The effects of diffusion and groundwater table changes on toluene transport under the influence of adsorption were inhibited.The transport law of toluene in soil and groundwater obtained in this paper can provide a basis for the remediation of toluene organic pollutants contaminated sites.