A new approach to determine the kinetic parameters for nitrifying microorganisms in the activated sludge systems

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• 作者：Ewa Liwarska-Bizukojc^a ; ^{ewa.liwarska-bizukojc@p.lodz.pl} ; Marcin Bizukojc^b
• 关键词：Ammonium ; Autotrophic biomass ; Kinetic parameters ; Oxygen uptake rate ; Nitrification
• 刊名：Bioresource Technology
• 出版年：2012
• 期刊代码：11_09608524
• 类别：ce
• 出版时间：April, 2012
• 卷：109
• 期：Complete
• 页码：21-25
• 文件大小：394 K

摘要

This work aims at establishing the methodology to determine kinetic parameters describing growth of autotrophs in the activated sludge systems. It is based upon the measurement of oxygen uptake rate (OUR) only. Two Monod kinetic parameters, namely maximum specific growth rate for autotrophic biomass (渭_max, A) and half-saturation constant for ammonium ions (K_A) were simply and rapidly determined within a single batch OUR test with the use of ammonified wastewater. The obtained mean values of the parameters are 渭_max, A = 0.675 h^鈭? and K_A = 0.912 mg NH₃-N l^鈭? and they are close to the ones assumed in activated sludge models. It indicates that the methodology of the respiratory batch test elaborated in this study is reliable.