Nitrogen Removal Using Combined Ultracompact Biofilm Reactor-Packed Bed System

2003 ◽  
Vol 129 (1) ◽  
pp. 43-51 ◽  
Author(s):  
S. L. Ong ◽  
L. Y. Lee ◽  
J. Y. Hu ◽  
W. J. Ng
Keyword(s):  
Nitrogen Removal ◽  
Packed Bed ◽  
Biofilm Reactor

Study on Temperature Influence on Nitrogen Removal Properties in Anammox

2014 ◽  
Vol 955-959 ◽  
pp. 484-487 ◽  
Author(s):  
Yue Mei Han
Keyword(s):  
High Temperature ◽  
Nitrogen Removal ◽  
Removal Rate ◽  
Packed Bed ◽  
Biofilm Reactor ◽  
Temperature Influence ◽  
Inhibition Effect ◽  
Effluent Concentration ◽  
Suitable Temperature ◽  
Short Time

The nitrogen removal and period tending to be stable of anammox under the temperature 37, 35, 30, 25 and 20 were investigated in a packed-bed anammox biofilm reactor which had already operated stably for 300 days. It was found that the highest NRR(nitrogen removal rate)-75.4% and the shortest variation period of effluent concentration-4h was obtained at 37 °C while the opposite results of the lowest NRR of 48.7% and the longest period of 8h was appeared at 20°C; The inhibition effect at high temperature was investigated: the nitrogen removal rate decreased at the temperature of more than 40°C and drop rapidly to 10% when the temperature increased closed to 60°C. The results of the experiments above showed that the nitrogen removal of anammox can be greatly influent by temperature: from 33 to 37°C was the suitable temperature; the NRR decreases under 30°C and the capable to adapt variation drop with the temperature falling. The NRR decreased under high temperature (more than 40°C) and plenty of anammox died in a short time at 60°C.

Development of a Flow-through Biofilm Reactor for Anammox Startup and Operation: Nitrogen Removal and Metacommunity

2021 ◽  
Author(s):  
Chao Jin ◽  
Jiali Xing ◽  
Zijian Chen ◽  
Yabing Meng ◽  
Fuqiang Fan ◽  
...  
Keyword(s):  
Nitrogen Removal ◽  
Biofilm Reactor ◽  
Flow Through

High-rate anaerobic treatment of Fischer–Tropsch wastewater in a packed-bed biofilm reactor

2010 ◽  
Vol 44 (9) ◽  
pp. 2745-2752 ◽  
Author(s):  
Mauro Majone ◽  
Federico Aulenta ◽  
Davide Dionisi ◽  
Ezio N. D'Addario ◽  
Rosa Sbardellati ◽  
...  
Keyword(s):  
Packed Bed ◽  
Anaerobic Treatment ◽  
Biofilm Reactor ◽  
High Rate ◽  
Fischer Tropsch

Nitrogen removal from livestock and poultry breeding wastewaters using a novel sequencing batch biofilm reactor

2010 ◽  
Vol 62 (11) ◽  
pp. 2599-2606 ◽  
Author(s):  
Hong Xiao ◽  
Ping Yang ◽  
Hong Peng ◽  
Yanzong Zhang ◽  
Shihuai Deng ◽  
...  
Keyword(s):  
Nitrogen Removal ◽  
Heterotrophic Bacteria ◽  
Biofilm Reactor ◽  
N Accumulation ◽  
Sequencing Batch Biofilm Reactor ◽  
Poultry Breeding ◽  
Mode 2 ◽  
Do Concentration ◽  
Nitrification And Denitrification ◽  
Biological Nitrogen

A study was conducted regarding the biological nitrogen removal from the livestock and poultry breeding wastewater (LPBWs) using a novel sequencing batch biofilm reactor (SBBR). Nitrogen removal process was studied under three aeration strategies/modes, referred to as MODE 1, 2, and 3. The results showed that MODE 2 (one operation period: instant fill of LPBWs, 3.0 h aeration, 1.5 h non-aeration, 1.5 h aeration, 1.0 h non-aeration and rapid drain of treated LPBWs) performed the best in nitrogen removal. Under MODE 2, the removal efficiencies were as high as 96.1 and 92.1% for NH3-N and TN, respectively. Simultaneous nitrification and denitrification (SND), as well as shortcut nitrification and denitrification are likely to be the two main mechanisms for the nitrogen removal in this study. Nitrifying bateria were not inhibited by heterotrophic bacteria with C/N ratios ranging from 18.1 to 21.4 and DO concentration of 2.0 mg/l. Alternation between aeration and non-aeration played an important role in NO2−-N accumulation.

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