ASM2D模型在A^2O脱氮除磷工艺优化设计中的应用

APPLICATION OF ASM2D MODEL IN THE OPTIMIZATION DESIGN OF A^2O PROCESS

ASM2D模型在国外新建污水处理场的设计过程中已经得到了广泛应用,相比传统计算方法进行设计,具有准确性高,流程模拟更清晰等优点。本研究利用ASM2D模型模拟某新建污水处理场A^2O工艺流程,通过调整工艺运行参数输出模拟结果。结果表明,Y_(PAO)、Y_H、μ_A、二沉池污泥排放量及污泥回流量对A^2O工艺总磷去除效果有明显影响,经过校正的模型能较好的模拟新建污水处理场运行状况。此外,本研究通过模拟结果优化了设计方案,对拟建污水场的运行参数、操作方式提供了参考。

ASM2D model has been widely used in the design process of new foreign wastewater treatment plants. Compared to the traditional calculation method,it has the advantages of higher accuracy and the process simulation being clearer. In this study,ASM2D model is used to simulate a new sewage treatment plant with A^2O Process. Model operating parameter is adjusted to output the simulation results. And the results show that YPAO,YH,μA,the amount of sludge discharge and recycle flow have a significant impact on total phosphorus removal rate. The calibrated model can simulate the operating conditions of the new sewage treatment plant well. In addition,the design plan is optimized according to the simulation results,which provides reference for the operating parameters and modes of planned wastewater treatment plants.