采用TUD模型动态模拟倒置A^2/O工艺运行工况

Dynamic Simulation of Reversed A^2/O Process by TUD Model

在进行动态模拟前,首先对3组现场检测的水质、水量数据进行物料平衡检查,目的是校核实测数据的准确度。通过物料平衡分析发现,只有2组数据的物料平衡准确度合格,另外1组为无效数据。利用静态模拟建立并校正过的工艺模型对2组有效数据进行动态水质模拟,发现预测结果与实测值的吻合度至少为80%~90%。在此基础上,对典型水量日变化曲线(24 h)下的动态进水负荷进行模拟以预测出水水质的变化趋势,揭示动态负荷下出水水质的变化规律以及保持良好水质所应采取的运行对策。动态模拟结果具有较高吻合度这一事实表明,数学模拟技术完全可用于我国污水处理厂运行问题诊断以及运行优化方案的制定与实施。

Before dynamic simulation, three sets of measured on-site data on both water quantity and water quality were checked for mass balance with the purpose of accuracy calibration of measured data. The mass balance indicates that only two sets of measured data are effective in accuracy. With an established process model and validated model parameters, the dynamic simulation of the effective data shows a coincidence of at least 80% to 90% between predicted and measured data. Further dynamic influent loading rate simulation under typical daily variation for the effluent quality change reveals an effluent quality trend and a corresponding operational mode. The dynamic simulation with the high coincidence implies that the simulation technique can be reliably applied into trouble-shooting and optimization of WWTPs in China.