• 关键词：反硝化除磷  缺氧吸磷  生物除磷  反硝化聚磷菌  聚磷菌  硝酸盐

• 基金项目：国家自然科学基金重点项目(50138010);国家“863”重点科技专项(2003A601010)资助

• 李勇智
• 哈尔滨工业大学市政环境工程学院, 哈尔滨 150001

• 王淑滢
• 北京工业大学环境与能源工程学院, 北京 100022

• 吴凡松
• 哈尔滨工业大学市政环境工程学院, 哈尔滨 150001

• 代晋国
• 哈尔滨工业大学市政环境工程学院, 哈尔滨 150001

• 彭永臻
• 1. 哈尔滨工业大学市政环境工程学院, 哈尔滨 150001; 2. 北京工业大学环境与能源工程学院, 北京 100022

• 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%.

• Abstract：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 1mg/L and phosphorus and nitrate removal efficiency were above 94% and 95% respectively.

• Key words：Denitrifying  phosphorus removal  anoxic phosphorus uptake  biological phosphorus removal  nitrate

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