细胞自动机模拟活性污泥法污水处理过程  

A cellular automata model for simulating activated sludge wastewater treatment processes

作　　者：陈庆彩[1] 史江红[1] 吴唯[1] 

机构地区：[1]水环境模拟国家重点实验室,北京师范大学环境学院,北京100875

出　　处：《环境科学学报》2011年第9期1908-1918,共11页Acta Scientiae Circumstantiae

基　　金：国家自然科学基金项目(No.20877009);北京市自然科学基金项目(No.8093034);中央高校基本科研业务费专项资金资助(No.2009SD-8)~~

摘　　要：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,因素灵敏度分析结果表明,污泥颗粒粒径是影响初期吸附阶段的最重要因素,而温度是影响微生物代谢速率的主要因素,和实际科学理论相符.活性污泥法污水处理过程的细胞自动机模型研究有助于理解污水处理过程,可为污水处理提供理论依据和科学指导.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 capable of dynamically visualizing wastewater treatment processes and simulating adsorption and degradation of organic matter and the growth and decay of activated sludge biomass.The sludge particle size,molecular radii of organic substrates,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 is the major factor controlling the metabolic rate of activated sludge biomass.These findings are consistent with the existing theories.The cellar automata model is conducive to better understanding the wastewater treatment processes,and thus provides theory-based design principles and guidelines for treatment systems.

关 键 词：活性污泥法 细胞自动机 仿真 因素灵敏度 

分 类 号：X703[环境科学与工程—环境工程]