络合吸收-生物还原烟气脱硝集成系统是一个典型的多相多组分复杂系统，填料塔（反应器）内生物膜微观结构及其表界面的多相反应/传递规律对于该系统的模拟放大具有重要意义。本项目是基于已有的研究成果，通过量化流场、生物量、气液组分浓度等因素对于生物膜微观结构的影响, 探明生物膜结构的形成与发展机制，建立适宜的数学模型对生物膜形成过程进行动态模拟；阐明生物膜表界面结构对气液流场和关键组分传质及反应的作用机制，揭示生物膜表界面的反应/传递规律；基于生物膜形成机制及生物膜表界面反应/传递机理，考察生物膜填料聚团尺度传递过程，揭示生物膜结构与填料塔性能之间的内在联系；构建填料塔系统多尺度耦合的反应/传递模型，并进行实验验证。预计本项目的研究成果，将为生物膜填料塔废气治理的模拟放大和调控优化提供理论支撑依据，也将丰富三相（气、液、生物膜）反应系统多尺度研究的理论基础。

It is crucial to understand the mechanism of microstructure formation and its function for the simulation and system scale-up of chemical absorption-biological reduction integrated system, which is a multiphase and multicomponent system. Based on the existing research, this project is aiming to ascertain and simulate the formation mechanism of biofilm microstructure through quantifying the effects of flow fields, biomass, and component concentrations; to study the reaction and transfer process in the biofilm surface through the investigation of the effect of the biofilm microstructure on flow state and of the both two on mass transfer mechanism of key components; to reveal the relationship between biofilm structure and reactor performance based on the biofilm formation mechanism and reaction/transfer mechanism of biofilm surface and biofilm packings agglomerate structure; to establish and validate the multi-scale model for reaction and transfer involved in the biofilm packed tower system. The results of this project will provide theoretical foundation for the amplification and regulation of waste gas treatment in biofilm-packing column, and also enrich the theoretical basis of multi-scale research on three-phase reaction system.