A/O工艺实现城市污水半亚硝化与生物除磷  

Partial nitritation and biological phosphorus removal in A/O process treating municipal wastewater

作　　者：马斌[1] 张树军[2] 王俊敏[3] 念东[2] 陈刚新[2] 王淑莹[3] 彭永臻[1,3] 

机构地区：[1]哈尔滨工业大学城市水资源与水环境国家重点实验室,哈尔滨150090 [2]北京城市排水集团有限责任公司,北京100022 [3]北京工业大学北京市水质科学与水环境恢复工程重点实验室,北京100124

出　　处：《哈尔滨工业大学学报》2012年第2期70-74,共5页Journal of Harbin Institute of Technology

基　　金：国家高技术研究发展计划项目(2009AA060702);北京高校人才强教计划高层次人才资助项目(PHR20090502)

摘　　要：城市污水半亚硝化是实现其厌氧氨氧化的基础和关键步骤,但相关研究甚少,为此,利用A/O反应器处理实际城市污水,研究实现半亚硝化的可行性及其对生物除磷的影响.结果表明:A/O反应器可实现稳定的亚硝酸盐积累,积累率约为85%;通过调整水力停留时间可控制A/O反应器出水NO2--N/NH4+-N在1.0左右,满足厌氧氨氧化对进水水质的要求;温度和溶解氧质量浓度的波动会导致亚硝酸盐积累的破坏.实现半亚硝化的稳定后,A/O反应器除磷稳定性变差,可能与出水游离亚硝酸质量浓度(FNA)增加有关.Partial nitritation is the basis of anoxic research has been undertaken on this field. In this ammonium oxidation （Anammox）, however, very limited study, an A/O reactor was used to investigate the feasibility of the partial nitritation and the performance of biological phosphorus removal from municipal wastewater. The obtained results showed that the partial nitritation could be achieved in A/O reactor with nitrite accumulation rate of 85%. It was possible that nitrite-to-ammonium ratio in the effluent from the A/O reactor was approxi- mately controlled at 1.0 by adjusting hydraulic retention time, which was beneficial to the Anammox reaction. The fluctuation of temperature and DO concentration might lead to the deterioration of nitritation. After the a- chievement of partial nitritation, the biological phosphorus removal was not stable, which might relate to the increase of FNA concentration in the effluent of A/O reactor, and needed further experimental investigation.

关 键 词：A/O工艺 半亚硝化 生物除磷 城市污水 

分 类 号：X703[环境科学与工程—环境工程]