Modeling of sequencing batch reactors treating inhibitory and noninhibitory wastewaters
Modeling of sequencing batch reactors treating inhibitory and noninhibitory wastewaters
复制标题
处理抑制性和非抑制性废水的序批式反应器的建模
DOI：
10.2175/106143097x125128
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发表时间：
1997
期刊：
影响因子：
--
通讯作者：
S. Farooq
中科院分区：
文献类型：
--
作者：
G. Nakhla;Azhari F. M. Ahmed;S. Farooq
建立了序批式反应器（SBR）的数学模型，该模型考虑了填料和反应周期，并对文献中的实验数据进行了测试。Monod方程用于描述微生物生长动力学。所提出的模型预测的时间依赖性的微生物细胞和基质浓度在SBR处理废物。采用数值方法求解由非线性非稳态常微分方程组成的控制模型方程。模型模拟强调了进料速率作为主要操作参数的重要性。对于可生物降解的废物和低强度抑制性废物，瞬时填充是最佳的，而高强度抑制性废物处理仅在长填充时间下才有可能。该模型的预测与文献中报道的实验结果进行了比较。该模型有助于进一步理解间歇过程的废水生物处理动力学，并可作为一个有价值的设计辅助实践工程师。
A mathematical model for sequencing batch reactors (SBR) that takes into account fill and react periods was developed and tested against experimental data from the literature. The Monod equation was used to describe microbial growth kinetics. The proposed model predicts the time dependent microbial cell and substrate concentrations during SBR treatment of wastes. A numerical method was used to solve the governing model equations which comprised nonlinear unsteady‐state ordinary differential equations. Model simulations highlighted the importance of feed rate as a major operating parameter. For biodegradable wastes and low strength inhibitory wastes, an instantaneous fill is optimum whereas high strength inhibitory waste treatment is only possible with long fill times. The model predictions compared well with experimental results reported in the literature. This model is useful for further understanding of biological wastewater treatment kinetics by batch processes and may serve as a valuable design aid for practicing engineers.