Abstract
In recent years, the simultaneous nitrification and denitrification (SND) was a focal point of research about the denitrification. In this paper, the new mesoporous biological carrier was prepared by using the active sludge of wastewater treatment plant as raw material, and its structure was characterized by x-ray fluorescence spectrometer (XPS), scanning electron microscopy and differential thermal analyses and thermogravimetric analysis (DTA-TG). At the same time, its performance of simultaneous nitrification and denitrification towards coking wastewater was evaluated in the three-phase aerobic biological fluid-bed reactor. The results showed that this new mesoporous biological carrier with the super-large specific surface area, rough surface, and well layer structure and abundance tunnel pore was mainly composed of organic component. Under the experimental condition, this carrier exhibited the good performance of simultaneous nitrification and denitrification. The removal efficiency of ammonia nitrogen and total nitrogen was 83.2% and 50.8%, respectively
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