摘要
研究臭氧预氧化/曝气生物滤池（O3/BAF）联合工艺深度处理实际城市污水二级出水过程中,后续BAF系统中有机物的生物降解数学模型。以有机底物浓度、填料层高度两个基本变量为控制条件,研究BAF的总体运行常数和填料特性常数,得出BAF有机物生物降解动力学方程为（Se/S0）=exp（（-Kn/qSh0））。出水与进水COD浓度比值（Se/S0）的对数与反应器填料高度（h）之间可表达成一次函数关系。在不同的进水浓度（S0）下,根据ln（Se/S0）~h和关系式m=（K/qS0n）,得到方程ln（qm）=-nln（S0）＋lnK。BAF总体运行常数K和填料特性常数n分别为1.708和0.5063。该模型对BAF工艺有如下指导意义：可以根据设计流量、进水有机物浓度和出水浓度,初步确定BAF的尺寸（如横截面积、高度等）。
The study of a dynamic model of biological aerated filter（BAF） was carried out in advanced treatment of secondary municipal wastewater effluent by pre-ozonation/（O3/BAF）.In this model,the organics concentration and the height of the media layer were taken as the two basic controlling parameters.The results shows that the dynamic model equation could be described with Se/S0=exp（-Kh/qSn0）.It is a linear function of logarithm of the ratio of Se to S0 with the height of the media layer h,based on the relationship of ln（（Se/S0）） with h and m=（（K/qSn0））,ln（qm）=-nln（S0）＋lnK could be achieved.The integrated running constant K and characteristic constant n are 1.708 and 0.5063,respectively.The presented model can give some help for the size design of the biological aerated filer based on flow rate,influent and effluent organics concentrations.
出处
《环境工程学报》
CAS
CSCD
北大核心
2010年第3期561-564,共4页
Chinese Journal of Environmental Engineering
基金
城市水资源与水环境国家重点实验室开放研究项目(QA200812)
中国博士后科学基金(20090450985)
教育部科技创新重大项目培育基金(705013)
关键词
数学模型
深度处理
曝气生物滤池(BAF)
二级出水
dynamic model
advanced treatment
secondary effluent
pre-ozonation
biological aerated filter
