简化活性污泥1号模型在间歇式循环上流污泥床中的应用

Application of Activated Sludge Model No.1 to Intermittent Cycle Upper Fluid Sludge Bed

以活性污泥1号模型(ASM1)为基础,结合间歇式循环上流污泥床工艺结构和实际进水水质特征,建立了简化的活性污泥模型(ASM1-S),该模型与ASM1模型相比,减少了反应过程、进水组分和参数,大大减少了模型参数测定的工作量和模拟过程中的计算量,从而提高了模型的实用性。本文通过测定模型进水组分和对模型模拟结果影响较大的4个参数(YH、μH、μA、bH)值进行测量,并利用Matlab编制模拟程序,就ASM1-S模型对间歇式循环上流污泥床实际运行状况进行了动态模拟,并将出水中COD、氨氮和总氮模型预测值与实测值进行对比,结果表明:该模型对出水中COD、氨氮和总氮的浓度模拟效果较好,最大误差小于10%,从而验证了ASM1-S模型的可靠性和实用性。

In combination with the structure of the intermittent cycle upper fluid sludge bed and the water characteristics,this paper establishes a simplified activated sludge model （ASM1-S） on the basis of activa- ted sludge model No. 1 （ASM1）. For ASM1-S, the number of biological processes and components and pa- rameters are fewer than those for ASMl,which greatly reduces the workload of parametric measurement and simulation and improves the practicability of the model. Then the paper determines the components and four parameters （YH ,μH ,μA, and bH） which have great influence on the simulation results. At last,the pa- per applies ASM1-S to simulating the wastewater treatment in the intermittent cycle upper fluid sludge bed. The simulation results show that the simulation effect of COD,NH3-N and TN are preferable and the maximum error is less than 10% ,which proves the accuracy and credibility of ASM1-S.