Model development for simultaneous nitrification and denitrification

被引：55

作者：

Pochana, K ^{[1
]}

Keller, J ^{[1
]}

Lant, P ^{[1
]}

机构：

[1] Univ Queensland, Dept Chem Engn, Adv Wastewater Management Ctr, Brisbane, Qld 4072, Australia

来源：

WATER SCIENCE AND TECHNOLOGY | 1999年 / 39卷 / 01期

关键词：

diffusion limitation; dynamic modelling; flee modelling; SND; simultaneous nitrification and denitrification;

D O I：

10.1016/S0273-1223(98)00789-6

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The aim of this study is to simulate the behaviour of nitrogen and carbon compounds in a sequencing batch reactor (SBR) by incorporating a dynamic microbial flee model. The results have shown that both flee diameter and liquid phase concentration are important factors influencing the internal flee reaction rate. An integrated model of the SBR has been proposed in this paper, whereby reaction rates are determined as a function of internal flee concentrations. This enables the evaluation of the phenomena that occur due to internal flee effects such as simultaneous nitrification and denitrification (SND). Results support the hypothesis that SND is a physical phenomenon, and occurs due to oxygen diffusion limitations within flocs. (C) 1999 IAWQ Published by Elsevier Science Ltd. All rights reserved.

引用

页码：235 / 243

页数：9

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