To investigate the nitration effects in different DO,pH value,temperature and nitrosation accumulation in sequencing biofilm batch reactor by experiments.

• 采用序批式生物膜法对不同溶解氧(DO)、温度和pH值条件下氨氮的硝化效果进行试验研究；对运行过程中亚硝氮的积累进行探讨.