Effect of pH, substrate and free nitrous acid concentrations on ammonium oxidation rate

被引：27

作者：

Jimenez, E. ^{[1
]}

Gimenez, J. B. ^{[2
]}

Seco, A. ^{[2
]}

Ferrer, J. ^{[1
]}

Serralta, J. ^{[1
]}

机构：

[1] Univ Politecn Valencia, Inst Ingn Agua & Medio Ambiente, Valencia 46022, Spain

[2] Univ Valencia, Escuela Tecn Super Ingn, Dept Ingn Quim, E-46100 Valencia, Spain

来源：

BIORESOURCE TECHNOLOGY | 2012年 / 124卷

关键词：

Ammonia oxidizing bacteria; Free ammonia; Free nitrous acid; Parameter calibration; pH effect; PHOSPHORUS UPTAKE; NITRIFICATION; CULTURES; REMOVAL; SBR;

D O I：

10.1016/j.biortech.2012.07.079

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

Respirometric techniques have been used to determine the effect of pH, free nitrous acid (FNA) and substrate concentration on the activity of the ammonium oxidizing bacteria (AOB) present in an activated sludge reactor. With this aim, bacterial activity has been measured at different pH values (ranging from 6.2 to 9.7), total ammonium nitrogen concentrations (ranging from 0.1 to 10 mg TAN L-1) and total nitrite concentrations (ranging from 3 to 43 mg NO2-N L-1). According to the results obtained, the most appropriate kinetic expression for the growth of AOB in activated sludge reactors has been established. Substrate half saturation constant and FNA and pH inhibition constants have been obtained by adjusting model predictions to experimental results. Different kinetic parameter values and different Monod terms should be used to model the growth of AOB in activated sludge processes and SHARON reactors due to the different AOB species that predominate in both systems. (C) 2012 Published by Elsevier Ltd.

引用

页码：478 / 484

页数：7

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