A fundamental analysis of continuous flow bioreactor models and membrane reactor models to process industrial wastewaters
A fundamental analysis of continuous flow bioreactor models and membrane reactor models to process industrial wastewaters
复制标题
DOI：
10.1016/j.cej.2007.11.035
复制
发表时间：
2008-07
影响因子：
15.1
通讯作者：
M. Nelson;E. Balakrishnan;Harmaninder Jit Singh Sidhu;X. Chen
中科院分区：
文献类型：
--
作者：
M. Nelson;E. Balakrishnan;Harmaninder Jit Singh Sidhu;X. Chen
分析了连续流生物反应器和理想连续流膜反应器对工业废水的稳态处理。该反应被认为是由Contois生长动力学控制的，Contois生长动力学通常用于模拟含有可生物降解有机材料的废水中生物质的生长。我们表明，具有理想循环的流动反应器具有与理想膜反应器相同的性能，而非理想膜反应器的性能与适当定义的具有非理想循环的连续流生物反应器相同。因此，所有三种反应器类型的性能都可以通过分析带有循环的流动反应器得到。找到了模型的稳态，并确定了其稳定性作为停留时间的函数。得到了反应器在较大停留时间下的性能。在停留时间很长的极限条件下，三种反应器的性能完全相同。因此，使用膜反应器或循环流动反应器处理工业废水和浆料的主要优点是在较短的停留时间内提高性能。
We analyse the steady-state treatment of industrial wastewaters in a continuous flow bioreactor and in an idealised continuous flow membrane reactor. The reaction is assumed to be governed by Contois growth kinetics, which is often used to model the growth of biomass in wastewaters containing biodegradable organic materials. We show that a flow reactor with idealised recycle has the same performance as an idealised membrane reactor and that the performance of a non-idealised membrane reactor is identical to an appropriately defined continuous flow bioreactor with non-idealised recycle. The performance of all three reactor types can therefore be obtained by analysing a flow reactor with recycle. The steady-states of the model are found and their stability determined as a function of the residence time. The performance of the reactor at large residence times is obtained. In the limit as the residence time becomes very large, all three reactor configurations have identical performances. Thus the main advantage of using a membrane reactor, or a flow reactor with recycle, for the treatment of industrial wastewaters and slurries is to improve the performance at low residence times.