生物反应器填埋场有机物变化模型研究

生物反应器填埋场可以对渗滤液进行原位处理，同时加速垃圾的稳定化. 为了考察生物反应器填埋场中有机物质量浓度的动态变化及其影响因素，根据质量守恒和有机物降解动力学原理，建立了填埋场渗滤液中有机物质量浓度动态变化模型，采用四阶经典Runge-Kutta算法对模型进行了求解，通过室内模拟试验数据对模型中的参数进行了率定.结果表明，模型计算结果和试验监测数据符合较好，说明该模型可以比较精确地预测填埋场渗滤液可降解有机物的质量浓度. 鉴于获取数据的限制，对模型的输入参数进行了敏感性分析.结果表明，有机物从固相向液相的迁移速率常数(_ls)和液相有机物降解的速率常数(_l)的变化对模型的模拟结果影响较大. 

A Mathematical Model Simulating Organic Variation in Bioreactor Landfill

Leachate can be disposed in situ and solid wastes stabilization accelerated in bioreactor landfills. In order to investigate organic dynamic variationand influencing factors in bioreactor landfills, a mathematical model simulating organic variation in the leachate of bioreactor landfill was presented and demonstrated based on mass balance of contaminants and degradation kinetics. The model was solved numerically using a fourth-order Runge-Kutta algorithm and the model parameters were validated by monitoring data in simulated experiment. The simulating results are close to monitoring data, which indicates that biodegraded organic concentration has been forecasted accurately by this model. Given the limitations in data capture, a sensitivity analysis is performed, highlighting themodel''s response to changes in input variables. The results show that leachingvelocity constant from solid to liquid and degradation velocity constant of organic in liquid have significant effect on simulating outcome.