Partial Nitrification to Nitrite at Low DO
Partial nitrification to nitrite was reported to be technically feasible and economically favorable, which can be obtained by selectively inhibiting nitrite oxidizing microorganisms through many ways. This paper studied the effect of low DO(Dissolved Oxygen) concentration and the variation modes of DO on nitritation in SBR. The results showed that low DO concentration throughout the SBR cycle led to the failour of partial nitrification. While the mode of variable DO concentrations in one cycle can achieve Nitritation in SBR. The variable DO mode was that 0.4mg/L of DO concentration in feast period and 6mg/L of DO concentration in famine period. In this DO mode, the ratio of NO2--N to the sum of NO2--N and NO3--N in effluent can reach over 80％.
low DO partial nitrification to nitrite SBR
Xiaoling-Zhang Ying-Chen Zhiying-Wang
School of Environmental Science and Engineering, Changan University, Xian 710064, China School of Environmental and Municipal Engineering, Xian University of Architectural Science and Tec
国际会议
上海
英文
1123-1126
2008-05-16（万方平台首次上网日期，不代表论文的发表时间）