Study on the Model of Organic Contaminant Transportation and Biodegradation in Unsaturated Soil
In order to obtain the regularities of organic contaminant distribution in soil environment, the model for describing the interaction, transportation and transformation of organic contaminant, electron acceptor and bacteria was established based the soil water dynamics, the theory of solute transportation and the principle of micro-biological degradation by using double Monod micro-biological degradation. The numerical simulation analysis was performed taking benzene for example. The simulation indicates that with the increasing of contaminant concentration and the reducing of dissolved oxygen concentration, the bacterium concentration increases first and then reduces; the bacteria chiefly aggregate in the zone that both the nutrient concentration and oxygen concentration are higher, and the aggregation area moves down with the time increasing; the contaminant concentration, the dissolved oxygen concentration and the bacterium concentration have high relevance with each other.
unsaturated soil organic contaminant aerobic degradation numerical simulation
ZHAO Ying XUE Qiang LIU Lei ZHAO Ying LIANG Bing LIU Lei
State Key Laboratory of Geomechanics and Geotechnical Engineering Institute of Rock and Soil Mechani Department of Mechanics and Engineering Sciences Liaoning Technical University, LTU Liaoning, China
国际会议
上海
英文
4141-4144
2008-05-16（万方平台首次上网日期，不代表论文的发表时间）