摘要
采用SBR反应器 ,对以硝酸盐作为电子受体的反硝化聚磷菌的选择和富集作了研究 .结果表明 ,反硝化聚磷菌存在于传统的强化生物除磷体系之中 .经过 3个阶段的选择和富集 ,反硝化聚磷菌在聚磷菌中的比例从 15 %上升到 73% .稳定运行的强化反硝化生物除磷体系具有良好的强化生物除磷和反硝化脱氮性能 ,缺氧结束时体系中磷浓度小于 1mg L ,除磷和脱氮效率分别大于 94 %和 95 % .
The selection and dominance of denitrifying phosphate accumulating organisms (DNPAOs), which are capable of utilizing nitrate as electron acceptor, was investigated in a laboratory-scale Sequencing Batch Reactor (SBR). The results obtained demonstrated that DNPAOs were already present in the conventional biological phosphorus removal system. The proportion of DNPAOs increased from 15.5% to 73% of total phosphate accumulating organisms after three phase selection. Simultaneous anoxic phosphate uptake and biological denitrification with good performance could be obtained in the anaerobic/anoxic SBR operated in steady-state. The concentration of phosphorus at anoxic end was low than 1?mg/L and phosphorus and nitrate removal efficiency were above 94% and 95% respectively.
出处
《环境科学学报》
CAS
CSCD
北大核心
2004年第1期45-49,共5页
Acta Scientiae Circumstantiae
基金
国家自然科学基金重点项目 (5 0 1380 10 )
国家"86 3"重点科技专项 (2 0 0 3A6 0 10 10 )资助
