Abstract
An upflow, partially packed biological aerated filter (BAF) reactor was used to remove nitrogen in the form of ammonia ions by a nitrification process that involves physical, chemical and biological phenomena governed by a variety of parameters such as dissolved oxygen concentration, pH and alkalinity. Dissolved oxygen (DO) and pH were shown to have effects on the nitrification process in this study. Three C:N ratios i.e., 10, 4 and 1 were compared during this study by varying the nitrogen loading while the carbon loading was kept constant at 0.405 ± 0.015 kg chemical oxygen demand m -3 d -1. The removal efficiencies of ammonia linearly increase with arise of the initial concentration of ammonia-nitrogen. The results of the 115 days' operation of the BAF system showed that its overall NH3-N performance was good, where a removal efficiency of 87.0 ± 2.9%, 89.2 ± 1.38% and 91.1 ± 0.7% and COD removal of 87.6 ± 2.9%, 86.4 ± 2.1% and 89.5 ± 2.6% were achieved for the C:N ratios of 10, 4 and 1, respectively on average, over 6 h hydraulic retention time (HRT). No clogging occurred throughout the period although backwashing was eliminated. It was concluded that the BAF system proposed in this study removed nitrogen by the nitrification process extremely well.
| Original language | English |
|---|---|
| Pages (from-to) | 27-35 |
| Number of pages | 9 |
| Journal | Journal of Water Reuse and Desalination |
| Volume | 1 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - 2011 |
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Keywords
- Alkalinity
- Biological aerated filter (BAF)
- C:N ratio
- DO
- Nitrification
- pH
ASJC Scopus subject areas
- Filtration and Separation
- Water Science and Technology
Cite this
Nitrogen-removal efficiency in an upflow partially packed biological aerated filter (BAF) without backwashing process. / Biplob, Pramanik; Suja`, Fatihah; Md Zain, Shahrom; Ahmed, Elshafie.
In: Journal of Water Reuse and Desalination, Vol. 1, No. 1, 2011, p. 27-35.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Nitrogen-removal efficiency in an upflow partially packed biological aerated filter (BAF) without backwashing process
AU - Biplob, Pramanik
AU - Suja`, Fatihah
AU - Md Zain, Shahrom
AU - Ahmed, Elshafie
PY - 2011
Y1 - 2011
N2 - An upflow, partially packed biological aerated filter (BAF) reactor was used to remove nitrogen in the form of ammonia ions by a nitrification process that involves physical, chemical and biological phenomena governed by a variety of parameters such as dissolved oxygen concentration, pH and alkalinity. Dissolved oxygen (DO) and pH were shown to have effects on the nitrification process in this study. Three C:N ratios i.e., 10, 4 and 1 were compared during this study by varying the nitrogen loading while the carbon loading was kept constant at 0.405 ± 0.015 kg chemical oxygen demand m -3 d -1. The removal efficiencies of ammonia linearly increase with arise of the initial concentration of ammonia-nitrogen. The results of the 115 days' operation of the BAF system showed that its overall NH3-N performance was good, where a removal efficiency of 87.0 ± 2.9%, 89.2 ± 1.38% and 91.1 ± 0.7% and COD removal of 87.6 ± 2.9%, 86.4 ± 2.1% and 89.5 ± 2.6% were achieved for the C:N ratios of 10, 4 and 1, respectively on average, over 6 h hydraulic retention time (HRT). No clogging occurred throughout the period although backwashing was eliminated. It was concluded that the BAF system proposed in this study removed nitrogen by the nitrification process extremely well.
AB - An upflow, partially packed biological aerated filter (BAF) reactor was used to remove nitrogen in the form of ammonia ions by a nitrification process that involves physical, chemical and biological phenomena governed by a variety of parameters such as dissolved oxygen concentration, pH and alkalinity. Dissolved oxygen (DO) and pH were shown to have effects on the nitrification process in this study. Three C:N ratios i.e., 10, 4 and 1 were compared during this study by varying the nitrogen loading while the carbon loading was kept constant at 0.405 ± 0.015 kg chemical oxygen demand m -3 d -1. The removal efficiencies of ammonia linearly increase with arise of the initial concentration of ammonia-nitrogen. The results of the 115 days' operation of the BAF system showed that its overall NH3-N performance was good, where a removal efficiency of 87.0 ± 2.9%, 89.2 ± 1.38% and 91.1 ± 0.7% and COD removal of 87.6 ± 2.9%, 86.4 ± 2.1% and 89.5 ± 2.6% were achieved for the C:N ratios of 10, 4 and 1, respectively on average, over 6 h hydraulic retention time (HRT). No clogging occurred throughout the period although backwashing was eliminated. It was concluded that the BAF system proposed in this study removed nitrogen by the nitrification process extremely well.
KW - Alkalinity
KW - Biological aerated filter (BAF)
KW - C:N ratio
KW - DO
KW - Nitrification
KW - pH
UR - http://www.scopus.com/inward/record.url?scp=84873445778&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84873445778&partnerID=8YFLogxK
U2 - 10.2166/wrd.2011.008
DO - 10.2166/wrd.2011.008
M3 - Article
AN - SCOPUS:84873445778
VL - 1
SP - 27
EP - 35
JO - Journal of Water Reuse and Desalination
JF - Journal of Water Reuse and Desalination
SN - 2220-1319
IS - 1
ER -