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Modeling of the attached and suspended biomass fractions in a moving bed biofilm reactor

机译：移动床生物膜反应器中附着和悬浮生物质级分的建模

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The performance, kinetics, and stoichiometry of three high-rate moving bed biofilm reactors (MBBRs) were evaluated. A constant surface area loading rate (SALR) and three different hydraulic retention times (HRTs) were utilized to create scenarios where the attached and suspended biomass fractions would differentiate, despite the main design parameter remaining constant. Performance was simulated using BioWinT 6.0 software. The objective was to evaluate whether a calibrated/validated model could accurately predict experimental results. Initially, a sensitivity analysis was performed to determine influential parameters. The calibration/validation of influential parameters was then conducted via steady-state simulations for two base cases: 1) highest HRT; and 2) lowest HRT. Both sets of calibrated/validated parameters were substantiated using: 1) steady-state simulations at the other HRTs; and 2) dynamic simulations to evaluate the kinetic rates of attached and suspended biomass fractions at all HRTs. Results demonstrated that the model could be calibrated/validated for a single HRT, but could not accurately predict the performance, kinetics, or stoichiometry at other HRTs. (C) 2021 Elsevier Ltd. All rights reserved.
机译：评估了三种高速运动床生物膜反应器（MBBRS）的性能，动力学和化学计量。恒定的表面积负荷率（SALR）和三个不同的水力停留时间（水力停留时间）被利用来创建场景，其中附接，并悬浮生物质组分将分化，尽管主要的设计参数保持恒定。使用BiWint 6.0软件模拟性能。目标是评估校准/验证的模型是否可以准确预测实验结果。最初，进行敏感性分析以确定有影响力的参数。然后通过两个基本情况的稳态模拟进行有影响的参数的校准/验证：1）最高的HRT;和2）最低的HRT。两组校准/验证参数使用：1）在另一个HRT上使用：1）稳态模拟; 2）动态模拟，以评估所有HRT的附着和悬浮生物质馏分的动力速率。结果表明，可以为单个HRT进行校准/验证该模型，但不能准确地预测其他HRT的性能，动力学或化学计量。 （c）2021 elestvier有限公司保留所有权利。

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