NDLI: Effects of hydrodynamic conditions on the start-up of anaerobic ammonium oxidation (ANAMMOX) process in EGSB reactors

Content Provider	IEEE Xplore Digital Library
Author	Zhaoxia Xue Chao Wang Jiashun Cao Jie Gu
Copyright Year	2011
Description	Author affiliation: Key Laboratory of Integrated Regulation and Resource, Development on Shallow Lakes of Ministry of Education, Hohai University, Nanjing, China (Zhaoxia Xue) \|\| College of Environment, Hohai University, Nanjing, China (Chao Wang; Jiashun Cao; Jie Gu)
Abstract	2 liters anaerobic granular sludge and 1.5 liters aerobic sludge were seeded to four similar plexiglass EGSB reactors, which used to start-up anaerobic ammonium oxidation process. The EGSB reactors were operated on peristaltic pumps with different recycled-water upflow velocities(1.5m-h-1(1#), 2.0m-h-1(2#), 2.5m ·h-1(3#), 3.0m-h-1(4#)) in order to expose the biomass to different shear conditions and to study their effects on both efficiency and biophysical properties of the Anammox granular biomass. The results showed that: Greater hydraulic loading, the higher the efficiency of the reactor started When the increased flow velocity is 2.5m / h, the reactor has the most significant anaerobic ammonium oxidation effect and the best impact resistance. During the four reactors startup, $NH^{+}-N$ and $NO^{−}-N$ removal ratio was lower than the theoretical value (1:1.32) in most of the time, and $NO^{−}-N$ did not accumulate. The reasons may be $NO^{−}-N$ what the anaerobic ammonium oxidation process generated reduc to $NH^{+}-N$ because of the presence of nitrate-reducing bacteria
Starting Page	5246
Ending Page	5249
File Size	683337
Page Count	4
File Format	PDF
ISBN	9781424481620
e-ISBN	9781424481651
DOI	10.1109/ICECENG.2011.6058454
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2011-09-16
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Start-up Hydrodynamic conditions Laboratories Lakes Educational institutions Hydrodynamics Oxidation Granular sludge characteristics ANAMMOX Biomass Inductors EGSB reactor
Content Type	Text
Resource Type	Article

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