生物脱氮新工艺及其机理的研究

Biological nitrogen removal from wastewater and the prevention of eutraphication of water body are the most important issues in the field of modern wastewater treatment, they are also very urgent tasks faced by the circle of water pollution control today. This project has made substantial progress in the two subjects, that is, the method of micbobial immobilization and the process of nitrogen removal. A new method for the immobilization of microbial cells was established and applied for one patent. A novel process for the nitrogen removal from wastewater was developed in which the nitrification reaction was successfully controlled at the stage of partial nitrification and then use nitrite as the electron to oxidize the ammonia to produce dinitrogen. The parameters of this process was optimized and the kinetics of anaerobic ammonia oxidation process was characterized. These achievements can provide the necessary technical parameters for further research and lay a solid foundation for the development of a short-cut and high-efficiency process for nitrogen removal from wastewater.

以从本实验室长期运行的脱氮生物反应器中分离出厌氧氨氧化微生物(anaerobic ammonium oxidizing microorganisms)为基础, 研究该微生物的生理生化特性并进行种属鉴定。开发新的微生物固定化方法，研究固定化厌氧氨氧化微生物的特性、活性表征、径向分布规律。利用同位素(15N)示踪及酶学分析手段探讨其反应机理。研究反应过程动力学并优化其训ひ仗跫问Ｎ⒁惶跫蚪荨⒕谩⒏咝У耐训ひ战⒖蒲Щ