【摘要】 依据生物流化床内的质量平衡方程 ,建立了流化床内腐殖酸 (HA)生物降解的动力学模型 ;以Monod方程为基础 ,结合生物反应动力学理论 ,建立了生物流化床降解腐殖酸的稳态动力学模型 ,在动力学模型中 ,引入了腐殖酸总降解系数 (K) ,采用多元逐步线性回归法确定了该系数与水力停留时间和进水UV2 54 值的关系式。以微污染湖水中HA的降解为研究对象 ,在不同水力停留时间和进水腐殖酸浓度条件下对所建立的动力学模型进行了验证 ,结果表明 ,该模型可较好地描述HA生物降解的过程更多还原

【Abstract】 Based on the mass-balance equation in the biological fluidized bed (BFB),a biodegradation kinetic model of humic acid (HA) in the BFB is developed.According to Monod equation and the dynamic theory of bioreactor,a steady dynamic model of the humic acid degradation in the BFB is further built,and a total degradation coefficient (K) in the model is introduced and determined regard to hydraulic resident time and influent value of UV 254 by multivariate step linear regression technology.Under the conditions of different hydraulic resident times and influent HA concentration,the model verification shows that it can be satisfactorily used to describe biodegradation process of HA in the BFB.更多还原