摘要
针对油气田地区的地下水污染日益突出问题 ,文章综合考虑石油类有机污染物在包气带中扩散、吸附解吸、分配和生物降解等环境行为 ,建立了土壤 水环境体系有机污染物迁移转化的非平衡动力学模型 ,并编制了RBCA有限元程序。预测污染物在土壤 水环境中浓度分布变化趋势 ,探讨了模拟参数kd、k变化对有机污染物迁移的影响。模拟结果表明 :吸附解吸速率参数的变化对污染物达到平衡状态起着决定性作用 ,其结果可为定量研究有机污染物在土壤 水环境中的归宿提供可靠的理论根据 。
On the condition of considering environment behavior on diffusion,absorption\|desorption, distribution and biodegradation of organic pollutants in soil\|water environment,nonequilibrium dynamics model of organic pollutants transport and migration in multimedia environment is developed in this paper,which aims at the severe problem of groundwater contamination in oil and gas fields.The RBCA finite element program is given,and the program is utilized to predict the distribution trend of organic pollutants concentration,and the impact of the parameters ( k\-d,k) variation in the model on the transport of organic pollutants is studied too.The results of simulation show that variation rate of k plays a decisive role on the equilibrium states of organic pollutants.It provides not only the theoretical evidence for studying distribution of organic pollutants transport in soil\|water environment,but also the scientific evidence and methodology for pollutants control and prevention in the process of oil and gas fields exploitation.
出处
《中国地质灾害与防治学报》
CSCD
2002年第3期19-22,共4页
The Chinese Journal of Geological Hazard and Control
基金
国家教育部资助项目 (No .2 0 0 0 172 )
辽宁省自然科学技术资助项目 (No .2 0 0 110 10 6 3)
