短程硝化-反硝化过程中氮素形态变化研究

 为防止湖泊和其他受纳水体富营养化的发生, 各城市污水处理厂均应用新的运行方法和控制策略进行脱氮除磷。短程硝化一反硝化是污水节能脱氮新技术之一, 其关键在于实现短程硝化。影响短程硝化反硝化的主要因素有温度、pH，氧气含量等等。研究结果表明，在水温为16.5℃，pH为7.4时，NH+4 N和TN的去除效果分别为42.59%和25.26%，是3个月中去除效果最好的，水温为11.5℃时次之，水温为7℃时，NH+4 N和TN的去除效果最差。可见温度是控制该过程脱氮效果的主要因素。

Research on Nitrification denitrification Process of Morphological Changes in the Nitrogen

The efficiency of wastewater treatment practices can be significantly improved through the introduction of new microbial treatment technologies. Partial nitrification denitrification, the key of which was the realization of partial nitrification, was considered to be one of the energy economizing nitrogen removal processes.  And the main factors of nitrification and denitrification are temperature, pH, oxygen content and so on. The experimental results showed that under the condition of temperature at 16.5℃ and pH=7.4, the removal efficiencies of NH+4 N (42.59%) and TN (25.26%) were the best in the there months, followed by the temperature of 11.5℃ and the removal efficiencies were the worst when the water temperature was 7℃. So the temperamental was a main factor of controlling partial nitrification.