Simultaneous nitrification and denitrification coupled with phosphorus removal in an modified anoxic/oxic-membrane bioreactor (A/O-MBR)

被引:106
作者
Fu, Zhimin [1 ]
Yang, Fenglin [1 ]
An, Yingyu [1 ]
Xue, Yuan [1 ]
机构
[1] Dalian Univ Technol, Sch Environm & Biol Sci & Technol, MOE, Key Lab Ind Ecol & Environm Engn, Dalian 116024, Liaoning, Peoples R China
关键词
Biological nitrogen removal; Biological assimilation; Phosphorus-accumulating organisms; Poly-beta-hydroxybutyrate; Membrane bioreactor; WASTE-WATER TREATMENT; SEQUENCING BATCH REACTOR; UPFLOW BED FILTER; NITROGEN REMOVAL; ACCUMULATING ORGANISMS; N-REMOVAL; CARBON; PERFORMANCE; RECYCLE; SYSTEM;
D O I
10.1016/j.bej.2008.09.021
中图分类号
Q81 [生物工程学(生物技术)]; Q93 [微生物学];
学科分类号
071005 ; 0836 ; 090102 ; 100705 ;
摘要
In this study, simultaneous carbon. nitrogen and phosphorus (PO43--P) removals using an anoxic/oxic-membrane bioreactor(A/O-MBR) system without any circulation was investigated. The total nitrogen(TN) removal efficiency was above 84.6%, and the average removal efficiencies of COD and PO43--P were 94.6 and 90.0%. respectively. Ammonium (NH4+-N) removal without nitrite (NO2--N) and nitrate (NO3--N) accumulation in the reactor suggested that simultaneous nitrification and denitrification (SND) occurred. The phosphorus-accumulating organisms (PAOs) accumulated in the reactor. AnOx/Oxic test indicated that intracellular organic carbon might be utilized as denitrification electron donor in nitrogen removal process. (C) 2008 Elsevier B.V. All rights reserved.
引用
收藏
页码:191 / 196
页数:6
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