【摘要】 根据典型石油类污染场地岩性、水文地质等特征,在长期观测、抽水试验及弥散试验等资料搜集与分析基础上,通过水流模型验证,构建了地下水水流运动及溶质迁移的数值模型。选取苯系物(BTEX)作为模拟因子,运用GMS软件中MT3DMS模块模拟地下水对流-弥散溶质迁移过程,运用RT3D模块模拟研究了地下水中移动、非移动的多种微生物共存的有机污染物生物降解过程。结果表明,生物降解化学反应具有明显的降低污染物峰值的作用,而研究区存在大量的好氧微生物作用和反硝化作用,据此提出可以采用原位生物修复技术来治理石油污染。更多还原

【Abstract】 Based on the lithological and hydrological characteristics at a typical petroleum contaminated site,and data collection and analysis of long-term observation and water pumping and dispersion experiments,a numerical model of groundwater flow and solute transport was developed and verified by a flow model.BTEX was used as the simulation factor,the convection-diffusion solute transport process in groundwater was simulated using MT3DMS module of GMS software,and the organic pollutant biodegradation process with the coexistence of a variety of mobile or immobile microorganisms in groundwater was simulated using RT3Dmodule of GMS software.The results showed that chemical reactions of biodegradation can decrease the peak values of contamination,and a large amount of aerobic microbes and denitrification exist in the study area,which suggested that in-situ bioremediation can be used to control petroleum pollution.更多还原