A/O工艺污水处理厂FCASM3-Hydro耦合模型及现场校验

Study on FCASM3-Hydro coupled model and site validation with A/O WWTP

在全耦合活性污泥模型(FCASM3)基础上,考虑生物场与水力流场的相互作用,建立了A/O工艺污水处理厂FCASM3-Hydro耦合模型.通过Matlab/Simulink软件平台进行数值模拟,将A/O工艺污水处理厂FCASM3-Hydro耦合模型分别与已报道的生物场-水力场耦合模型(Lee-Hydro)以及FCASM2-Hydro耦合模型进行数值模拟对比研究.结果表明,FCASM3-Hydro耦合模型对出水中COD、NH4+-N、NOx-N、PO34 -P等污染物质变化趋势的动态模拟比Lee-Hydro耦合模型更符合实际.在对出水COD的模拟上,FCASM3-Hydro与FCASM2-Hydro耦合模型的模拟值完全一致;在对出水NH4+-N和PO34 -P的模拟上,FCASM3-Hydro耦合模型的动态模拟结果比FCASM2-Hydro耦合模型更贴近实测变化趋势.

A FCASM3-Hydro coupled model for A/O WWTP is established based on fully coupled activated sludge model No. 3 （ FCASM3 ） while considering the interactions between the biological and hydraulic fields. Numerical simulation for FCASM3-Hydro coupled model with A/O WWTP is compared with the Lee-Hydro and FCASM2-Hydro coupled models using Matlab/Simulink software. The results show that the dynamic simulation of the FCASM3-Hydro coupled model is more consistent with measured pollutant concentrations than the Lee-Hydro coupled model, while the FCASM3-Hydro and FCASM2-Hydro coupled models accurately simulate COD throughout the process. For the simulation of NH4^＋ -N and PO4^3- -P, the dynamic simulation results for FCASM3-Hydro are much closer than FCASM2-Hydro to the real trends.