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Modeling Aerobic Granular Sludge Performance in Sequencing Batch Reactor

机译：排序间歇反应器中好氧颗粒污泥性能建模

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Selective wasting of flocculent sludge is one of the keystone strategies for selecting granular sludge in Aerobic Granular Sludge systems (AGS). Since both flocculent and granular sludge fractions can grow in the same system, it is essential to investigate the overall contribution of each fraction to the overall nutrient removal in the same system. Therefore, a one-dimensional (1D) biofilm model was constructed in which suspended growth occurs in the bulk liquid layer, and the granular sludge growth is represented by the biofilm structure. The model calibration was performed by utilizing operational and performance data from AGS pilot reactors operated at the Lawrence, KS wastewater treatment plant. The simulation results illustrate that the calibrated model represents the experimental data sufficiently well. Moreover, the model constructed in this study successfully identified the minimum granular sludge SRT that should be targeted for achieving complete ammonia removal in systems with low COD loading systems. Therefore, the developed model can be used for process understanding and for optimization of the nutrient removal efficiency.
机译：絮凝污泥的选择性浪费是好氧颗粒污泥系统（AGS）中选择颗粒污泥的主要策略之一。由于絮凝污泥和颗粒污泥馏分都可以在同一系统中生长，因此必须研究每个馏分在同一系统中对营养去除总量的总体贡献。因此，构建了一个一维（1D）生物膜模型，其中在本体液体层中发生了悬浮生长，并且颗粒污泥的生长以生物膜结构为代表。通过利用在堪萨斯州劳伦斯废水处理厂运行的AGS中试反应堆的运行和性能数据进行模型校准。仿真结果表明，校正后的模型可以很好地表示实验数据。此外，在本研究中构建的模型成功地确定了在低COD负载系统中实现完全脱氨的目标最小颗粒污泥SRT。因此，开发的模型可用于过程理解和营养去除效率的优化。

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