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COUPLING MODEL OF TRANSPORT OF VARIABLE CONCENTRATION CONTAMINANTS OF LANDFILL LEACHATE

DI Jun-zhen1, YIN Zhi-xiang1, LIU Jan-jun2(1.College of Civil Architecture Engineering, Liaoning Technical University, Fuxin 123000 China 2. Institute of Pyrotechnics, Wuhan Polytechnic University, Wuhan 430023 China)  
On the basis of the theory of unsaturation solute transport, we have established the dynamic coupling model of moisture flow and solute advection-dispersion,fitted the damp curve of organic contaminants of landfill by laboratory soil column test. In full consideration of the concentration damping of landfill contaminants, sorption, desorption and biodegradation of solutes in soil and water environments, we have made a numerical simulation of contaminant transport. The simulation results truly reflect the law of contaminant transport, and this model can provide some theoretical bases for forecasting space-time distribution of organic contaminants in soil on a quantitative basis.
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