A respirometric method for the kinetic modeling of ammonium‐oxidizing bacteria (AOB) and nitrite‐oxidizing bacteria (NOB) was implemented in two membrane bioreactor (MBR_A and MBR_B) systems. These biological systems worked at mixed liquor suspended solids concentration of about 6.6 g L⁻¹. MBR_A worked at 6 hr of hydraulic retention time (HRT) and 20.7°C, while the operational conditions for MBR_B were 9.5 hr of HRT and 14.7°C. Experimental data were fitted to the kinetic model with R² values of .9320 and .9250 for MBR_A and MBR_B, respectively. Both systems showed similar performances regarding organic matter and nitrogen removal. However, MBR_B showed highest rates of carbon source degradation and net heterotrophic bacteria growth, and MBR_A had highest rates of nitrogen source degradation and net autotrophic bacteria growth. This last system was characterized by values for Y_AOB, Y_NOB, μ_m,AOB and μ_m,NOB of 1.1749 mgVSS mgN⁻¹, 0.6473 mgVSS mgN⁻¹, 0.3664 hr⁻¹ and 0.1823 hr⁻¹, respectively.

中文翻译：

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膜生物反应器中氨氧化和亚硝酸氧化细菌动力学模型的呼吸测定方法

在两个膜生物反应器（MBR _A和MBR _B）系统中，采用了呼吸测定法对氨氧化细菌（AOB）和亚硝酸盐氧化细菌（NOB）进行动力学建模。这些生物系统在约6.6 g L ^-1的混合液悬浮固体浓度下工作。MBR _A在6小时的水力停留时间（HRT）和20.7°C下工作，而MBR _B的操作条件是9.5小时的HRT和14.7°C。实验数据拟合到动力学模型，MBR _A和MBR _B的R ²值为.9320和.9250， 分别。两种系统在有机物和脱氮方面均表现出相似的性能。然而，MBR _B表现出最高的碳源降解和净异养细菌生长速率，而MBR _A表现出最高的氮源降解和净自养细菌生长速率。这最后一个系统是用于Y，其特征在于值_AOB，Y _NOB，μ_米，AOB和μ_米，NOB 1.1749 mgVSS MGN的^-1，0.6473 mgVSS MGN ^-1，0.3664小时^-1和0.1823小时^-1分别。