细胞自动机模拟活性污泥法污水处理过程

从活性污泥法污水处理过程的微观机理出发,建立了污水处理过程的二维细胞自动机模型,并进行仿真实验.结果表明：建立的细胞自动机模型能够实现污水处理过程的动态可视化,复现出了污水中有机物被吸附、降解及微生物生长、繁殖和衰亡的过程;仿真中还讨论了污泥颗粒粒径、有机物分子半径、温度和污泥浓度等因素对模拟结果的影响,因素灵敏度分析...

A cellular automata model for simulating activated sludge wastewater treatment processes

In this study, a two-dimensional cellar automata model was developed to simulate activated sludge wastewater treatment processes. The results show that the model was successful in dynamic visualization of wastewater treatment processes, in simulation of adsorption and degradation of organic matter, and in simulation of the growth and decay of activated sludge biomass. The sludge particle size, molecular radii of organic substrates, the temperature and the sludge concentration had significant influences on the simulation results. The sensitivity analysis indicates that the particle size may be the most important factor in the initial stage of the adsorption process, while the temperature be the major factor controlling the metabolic rate of activated sludge biomass. These findings are consistent with the existing theories. The cellar automata model will lead to a better understanding of the wastewater treatment processes, and thus provide theory-based design principles and guidelines for treatment systems.