传统活性污泥法曝气池的细胞自动机模型

从活性污泥系统的复杂性及其生物学信息出发,结合传统活性污泥法的工艺特点,利用二维细胞自动机模拟曝气池内一个竖截面沿池长方向的演化过程,从而模拟出传统活性污泥法曝气池的污水处理过程。利用实际参数进行仿真实验,结果表明该细胞自动机模型能复现曝气池微生物复杂的生长代谢过程,描绘出有机物的降解过程和活性污泥的生长状况,实现了传统活性污泥法曝气池内污水处理过程的动态可视化,直观刻画了活性污泥系统的多样性、随机性、不确定性、强非线性等复杂系统的特征。最后,对所建模型的应用进行了分析。

Cellular Automata Model for Bioreactor of Traditional Activated Sludge System

Combined the complexity and biology information of activated sludge system with the characteristics of traditional activated sludge method, the evolvement of an ideal upright section along the length of bioreactor was simulated by cellular automata in two dimensions. The experiment was performed with practical parameters. The results indicate the CA model well reproduces the metabolism of microbe in the bioreactor, well describes the removal of substrate and the growth of activated sludge, realizes visualization of wastewater treatment in the bioreactor dynamically, and visually depicts the characteristics of complex system such as diversity, randomicity, indeterminacy and strong nonlinearity and so on. Finally, the application of this model was analyzed.