廃棄物埋立層内の降雨不飽和浸透流れによる非反応性溶質輸送(混合)現象への拡散モデルや2成分モデルの適用性

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Observed data of NaCl transport experiments with unsaturated and steady water flow in medium sand, incinerator ash and artificial refuse layer were simulated by a dispersion model, ortwo-component model. Parameters of each model were obtained as functions of flow rate. The two-component model can simulate observed data in the ash and refuse layer. The dispersion model can also simulate observed data at a very low flow rate. According to this result and theoretical consideration, it is suggested that the two-component model should be a model for high flow rate for convenience.<BR>Secondly, solute wash-out experiments by step-like or random pulse-like precipitations were done. The characteristics of solute wash-out in solid waste layers were also discussed. These observed curves were simulated by the dispersion model, or two-component model with the above obtained parameters. Consequently, the simulation almost succeeded for the sand layer and were less successful for the ash layer and refuse layer.
一般社団法人廃棄物資源循環学会の論文