Mainstream wastewater treatment in integrated fixed film activated sludge (IFAS) reactor by partial nitritation/anammox process

被引：162
作者：
Malovanyy, Andriy [1 ]
Trela, Jozef [1 ,2 ]
Plaza, Elzbieta [1 ]
机构：
[1] Royal Inst Technol KTH, Dept Sustainable Dev Environm Sci & Engn, S-10044 Stockholm, Sweden
[2] IVL Swedish Environm Inst, S-11428 Stockholm, Sweden
来源：
BIORESOURCE TECHNOLOGY | 2015年 / 198卷
关键词：
Anammox; Deammonification; IFAS; Mainstream; MBBR; BED BIOFILM REACTOR; STAGE PARTIAL NITRITATION/ANAMMOX; AUTOTROPHIC NITROGEN REMOVAL; LOW-TEMPERATURE; ANAMMOX BACTERIA; GRANULAR SLUDGE; UASB REACTOR; FULL-SCALE; DEGREES-C; DEAMMONIFICATION;
D O I：
10.1016/j.biortech.2015.08.123
中图分类号：
S2 [农业工程];
学科分类号：
0828 ;
摘要：
In this study the system based on the combination of biofilm and activated sludge (IFAS - integrated fixed film activated sludge) was tested and compared with a system that relies only on biofilm (MBBR - moving bed biofilm reactor) for nitrogen removal from municipal wastewater by deammonification process. By introduction of suspended biomass into MBBR the nitrogen removal efficiency increased from 36 +/- 3% to 70 +/- 4% with simultaneous 3-fold increase of nitrogen removal rate. Results of batch tests and continuous reactor operation showed that organotrophic nitrate reduction to nitrite, followed by anammox reaction contributed to this high removal efficiency. After sCOD/NH4-N ratio decreased from 1.8 +/- 0.2 to 1.3 +/- 0.1 removal efficiency decreased to 52 +/- 4%, while still maintaining 150% higher removal rate, comparing to MBBR. Activity tests revealed that affinity of NOB to oxygen is higher than affinity of AOB with half-saturation constants of 0.05 and 0.41 mg/L, respectively. (C) 2015 Elsevier Ltd. All rights reserved.
引用
收藏
页码：478 / 487
页数：10
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