Dynamic model for nitric oxide removal by a rotating drum biofilter.
Dynamic model for nitric oxide removal by a rotating drum biofilter.
复制标题
DOI：
10.1016/j.jhazmat.2009.02.159
复制
发表时间：
2009-09
影响因子：
13.6
通讯作者：
Junkang Chen;Yi-feng Jiang;Jianmeng Chen;H. Sha;Wei Zhang
中科院分区：
文献类型：
--
作者：
Junkang Chen;Yi-feng Jiang;Jianmeng Chen;H. Sha;Wei Zhang
为了说明新型转鼓生物过滤器（RDB）去除一氧化氮（NO）的过程，建立了动态模型并进行了验证。基于NO在气液界面的质量组分分布，结合Monod动力学方程，建立了描述NO在RDB中传质反应过程的数学模型，重点研究了NO在气、液、膜三相的浓度分布。由此得到了NO在生物膜载体上的分布方程，以及试验系统中NO去除的动力学模型。此外，通过模型的灵敏度分析，评价了操作参数，如进口NO浓度和空床停留时间对NO去除效率的影响。在此基础上，考虑了RDB底部营养液对NO的吸收，对模型进行了修正。结果表明，模拟数据与实验数据吻合较好。该模型可以模拟相对较高的NO去除效率的RDB。
To illustrate the process of nitric oxide (NO) denitrifying removal by a novel rotating drum biofilter (RDB), a dynamic model has been developed and further validated. Based on the mass component profile of NO at the gas–liquid interface combined with a Monod kinetic equation, the model was used to depict the mass transfer-reaction process of NO in RDB, focusing on the concentration distribution of NO in the gas, liquid, and biofilm phases. The NO distribution equation on the biofilm carrier was thereby achieved, as well as a dynamic model for NO elimination in the test system. Additionally, effects of operating parameters such as inlet NO concentration and empty-bed residence time on NO removal efficiency were evaluated through a sensitivity analysis of the model. The model was then modified taking the absorption of NO by nutrition liquid in the bottom of RDB into consideration. The results showed that the simulated data agreed well with the experimental data. The model made it possible to simulate a relatively high NO removal efficiency by RDB.