人工湿地动力学模型研究

人工湿地作为一种新型生态污水处理技术,在实际应用中取得了快速发展。讨论了人工湿地3种常用的数学模型(一级动力学模型、Monod动力学模型和Ergun公式),并对表达式之间的转换关系作了较为详细的推导;同时对其各自的优缺点作了分析。从中可以看出,人们对人工湿地去除污染物的内在机制尚缺乏定量化的了解,目前还难以对其设计、运行和预测作出十分准确的评价。最后对数学模型的研究方向作了展望。

Research on the Kinetic Model of Artificial Wetland

As a new type of ecological wastewater treatment technology,the artificial wetland has grown rapidly in practical application.To meet the urgent need of this technology in China,in the article three mathematical models of commonly used for artificial wetlands(First-order kinetic model,Monod kinetic model and Ergun formula) were discussed and the relations between the changes of expression were deduced in detail.Also the analysis of their respective advantages and disadvantages was done.It can be seen that people still lack of quantitative understanding about inherent mechanism of pollutants removal in constructed wetland.It was difficult to evaluate its design,operation and prediction accurately.Finally,the mathematical model study was prospected.