Assessment of mixing quality in full-scale, biogas-mixed anaerobic digestion using CFD
Assessment of mixing quality in full-scale, biogas-mixed anaerobic digestion using CFD
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DOI：
10.1016/j.biortech.2018.06.036
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发表时间：
2018-10-01
影响因子：
11.4
通讯作者：
Bridgeman, John
中科院分区：
文献类型：
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作者：
Dapelo, Davide;Bridgeman, John
为了提高混合效率和改善整体性能，将欧拉-拉格朗日CFD模型应用于全尺寸的厌氧消化器中。以前在厌氧消化中采用的两个定量混合标准（即，均匀性指数和死体积）进行了严格的评估。引入了一种新的定性方法来澄清定量方法的输出。有史以来第一次定量评估的混合质量在全尺寸，混合厌氧消化，然后提出了一种策略，以提高混合，涉及同心喷嘴歧管的组合使用的消化池的基础上，进行了评估。
An Euler-Lagrange CFD model is applied to a full-scale, biogas-mixed anaerobic digester to improve mixing efficiency and improve overall performance.Two quantitative mixing criteria previously adopted in anaerobic digestion (viz., uniformity index and dead volume) are critically assessed for the first time. A novel qualitative method is introduced to clarify the output of the quantitative methods. The first-ever quantitative assessment of mixing quality in full-scale, biogas-mixed anaerobic digestion is then proposed, and a strategy to improve mixing, involving the combined use of concentric nozzle manifolds at the base of the digester, is evaluated.