摘要
以悬浮填料床作为全程自养脱氮反应器,用不含有机碳的合成氨氮废水进行反应器的启动。系统的氨氮和总氮去除率分别达80%和60%左右。通过批式实验对全程自养脱氮做进一步的研究,结果表明,通过控制反应器中DO的浓度,可以控制氨氧化和反硝化的比率;当DO为0.8mg/L时,氨氮几乎完全转化为氮气,氨氧化和反硝化在此时达到了动态平衡;在低DO情况下,氨氮和亚硝氮同时存在,氨氮和总氮的转化率都大幅度的提高,说明氨氮可以亚硝氮为电子受体,在无外加有机碳源的情况下进行反硝化。
Suspending bed reactor with carrier was used asfull autotrophic ammonium removal reactor to startthe reaction with synthetic wastewater containingammonium without addition of organic carbon source.Removal rate of ammonium and total nitrogen wasabout 80% and 60% respectively in the system. Theresult of batch test of full autotrophic ammoniumremoval showed that controlling DO concentration could control the ratio of ammonium oxidation and denitri-fication, removed ammonium was almost completelyconversed into N2 at DO concentration of 0.8mg/lammonium oxidation and denitrification were balanced;Simultaneous presence of ammonium and nitrite couldaccelerate ammonium and total nitrogen conversion rateat low DO concentration, this showed that ammoniumdid perform denitrification reaction with nitrite aselectron acceptor without addition of organic carbonresource.
出处
《上海环境科学》
CAS
CSSCI
CSCD
北大核心
2003年第1期32-35,共4页
Shanghai Environmental Sciences
