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Criteria for nitrification and denitrification of high‐strength wastes in two upflow submerged filters
Design criteria for nitrification and denitrification of high‐strength wastewaters are presented in two upflow submerged filters in series. Oxygen was a very important parameter effecting the ammonia removal rate in nitrification. The half‐order and zero‐order rate constants for nitrification were determined for the dissolved oxygen ranges of 2 to 3 mg/L and 4 to 5 mg/L, respectively. The transition from ammonia to oxygen rate limitation occurred at a bulk oxygen:bulk ammonia ratio of approximately 2.5 to 4, showing that nitrification was oxygen limited for practical purposes. In nitrification nitrite accumulation reached a considerable degree at bulk oxygen:bulk ammonia ratios lower than 5. Also, in denitrification the half‐ and zero‐order rate constants were determined. The nitrite produced in the nitrification stage could be successfully reduced in denitrification without causing any inhibitory effect.
Criteria for nitrification and denitrification of high‐strength wastes in two upflow submerged filters
Design criteria for nitrification and denitrification of high‐strength wastewaters are presented in two upflow submerged filters in series. Oxygen was a very important parameter effecting the ammonia removal rate in nitrification. The half‐order and zero‐order rate constants for nitrification were determined for the dissolved oxygen ranges of 2 to 3 mg/L and 4 to 5 mg/L, respectively. The transition from ammonia to oxygen rate limitation occurred at a bulk oxygen:bulk ammonia ratio of approximately 2.5 to 4, showing that nitrification was oxygen limited for practical purposes. In nitrification nitrite accumulation reached a considerable degree at bulk oxygen:bulk ammonia ratios lower than 5. Also, in denitrification the half‐ and zero‐order rate constants were determined. The nitrite produced in the nitrification stage could be successfully reduced in denitrification without causing any inhibitory effect.
Criteria for nitrification and denitrification of high‐strength wastes in two upflow submerged filters
Çeçen, Ferhan (author) / Gönenç, Ibrahim E. (author)
Water Environment Research ; 67 ; 132-142
1995-03-01
11 pages
Article (Journal)
Electronic Resource
English
BIOFILM , FILTER , NITRIFICATION , DENITRIFICATION , NITRITE , KINETICS , DESIGN
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