文献类型：期刊文献

中文题名：固定化细胞单级生物脱氮动力学模型研究

英文题名：STUDY ON KINETICS MODEL OF SINGLE-STAGE BIOLOGICAL DENITRIFICATION WITH IMMOBILIZED CELLS

作者：曹国民[1];赵庆祥[1];孙贤波[1];张彤[1]

机构：[1]华东理工大学环境工程系,上海200237

年份：2001

卷号：19

期号：5

起止页码：12

中文期刊名：环境工程

外文期刊名：Environmental Engineering

收录：CSTPCD;;北大核心:【北大核心2000】；CSCD:【CSCD_E2011_2012】；

基金：国家自然科学基金资助项目 (2 97770 0 7)

语种：中文

中文关键词：生物脱氮;固定化细胞;动力学模型;废水处理

外文关键词：biodenitrification,immobilized cell and kinetics model

摘要：以PVA为载体 ,采用冷冻 解冻法混合固定硝化菌和反硝化菌 ,在鼓泡床中研究了固定化细胞单级生物脱氮的动力学。结果表明 :在固定化细胞单级生物脱氮过程中 ,内扩散对反应的影响非常小 ,脱氮速率受化学反应控制。反应的动力学可以用Monod方程来表示 ,其动力学常数Ks 和vmax分别为 30 3 0mg L和 0 0 96mg L·s。
The nitrifying bacteria and denitrifying bacteria were immobilized with polyvinyl alcohol (PVA) by iterative freezing and thawing.The kinetic model of single stage biological denitrification by immobilized cells in a bubble column bioreactor was studied.The results showed that the effect of internal diffusion on the overall rate could be neglected,and the limiting rate process was chemical reaction.The reaction kinetics of immobilized cells could be expressed as Monod equation and its kinetics constants, k s and v max ,were 303.0mg/L and 0.096mg/(L·s) respectively.A good agreement was observed between the predicted denitrification rate and the exprerimental one.