化工学报Issue(10)：4145-4149,5.DOI:10.3969/j.issn.0438-1157.2014.10.052
缺氧FNA对氨氧化菌和亚硝酸盐氧化菌的选择性抑菌效应
Selective inhibition effect of free nitrous acid on ammonium oxidizing bacteria and nitrite oxidizing bacteria under anoxic condition
摘要
Abstract
In order to study the selective inhibition effect of free nitrous acid (FNA) (0.27 mg HNO-2-N·L-1) on ammonium oxidizing bacteria (AOB) and nitrite oxidizing bacteria (NOB) under anoxic condition, both the variations of ammonium oxidation rate and nitrite oxidation rate and recovery of AOB reactivity and NOB reactivity were investigated by using the sludge treated by FNA for 6 h under anoxic condition. AOB and NOB reactivities decreased by 83.57% and 22.34% respectively after the sludge was subjected to treatment with FNA. NOB reactivity did not recover when the FNA-treated sludge was used under normal operation environment for 34 cycles. Especially, nitrite accumulation ratio increased gradually and remained over 90%. Moreover, concentrations of nitrogen compounds in the typical cycle showed that nitrite accumulation was not destroyed even if excessive aeration lasted for 2 h. Thus, the selective inhibition effect of FNA under anoxic condition could be used to establish stable nitritation in sewage treatment system, providing the foundation for achieving nitrogen removal from sewagevia nitritation and Anammox.关键词
游离亚硝酸/选择性/氨氧化菌/亚硝酸盐氧化菌/短程硝化/曝气/活性Key words
free nitrous acid/selectivity/ammonium oxidizing bacteria/nitrite oxidizing bacteria/nitritation/aeration/reactivity分类
资源环境引用本文复制引用
委燕,王淑莹,马斌,彭永臻..缺氧FNA对氨氧化菌和亚硝酸盐氧化菌的选择性抑菌效应[J].化工学报,2014,(10):4145-4149,5.基金项目
国家自然科学基金项目（21177005）；中国博士后科学基金项目（2012M520134）。 （）
