基于复合催化膜生物反应器的膜催化与同时硝化反硝化耦合烟气脱硝作用机理

氮氧化物是光化学烟雾污染、酸雨、臭氧层破坏和城市灰霾天气等一系列环境问题的重要根源，因此，研究新型膜生物反应器烟气脱硝技术及机理有重要的科学意义和现实意义。本项目拟采用复合催化膜生物反应器（HCMBR）处理方法，进行膜催化与同时硝化反硝化耦合烟气脱硝机理研究，构建并优化HCMBR体系，探索温度、重金属汞/铅烟气组分对HMCBR烟气脱硝的影响机制及嗜热耐汞/铅机理；在分子生物水平上解析同时硝化反硝化微生物群落结构与功能、硝化菌和反硝化菌的耦合脱硝现象与机理，阐明烟气脱硝过程中膜催化与同时硝化反硝化耦合作用机制；在不同传质条件下基质在催化膜生物膜内部的迁移转化行为及其功能菌群的空间分布行为及预测，揭示膜催化与同时硝化反硝化耦合烟气脱硝过程机理，提供催化膜生物反应器烟气脱硝的新思路，为建立基于催化膜生物反应器烟气脱硝的污染控制策略提供科学依据，具有潜在的应用价值。

Nitrogen oxides (NOx) are contribute a lot to photochemical smog, acid rain, ozone depletion and urban grey haze weather, therefore, studying the novel membrane bioreactor technology and mechanism for flue gas denitration has important scientific significance and practical significance. This project intends to use a hybrid catalytic membrane biofilm reactor (HCMBR) processing method, studies coupling mechanism of membrane catalytic and simultaneous nitrification and denitrification (SND) on NOx removal, builds and optimizes the HCMBR system, explores temperature, heavy metal mercury/lead influence mechanism on flue gas denitration and thermophilic resistance mechanism to mercury/lead. The project analyses microbial community structure and function of SND, coupling denitration phenomena and mechanism of nitrifying bacteria and denitrifying bacteria based on molecular biology, clarifies coupling mechanism of membrane catalytic and SND in flue gas denitration process; discusses matrix migration transformation behavior, space distribution and prediction of function flora in different mass transfer conditions; reveals SND process mechanism in the HCMBR. This provides a new way of flue gas denitration using a hybrid membrane catalytic biofilm reactor, serves the purpose to build NOx emission control strategy based on HCMBR, has scientific basis for potential application value.