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- Title
The effects of operation conditions of carbon/nitrogen ratio and pH on nitrogen removal in intermittently aerated membrane bioreactor (IAMBR).
- Authors
Benaliouche, H.; Abdessemed, D.; Nezzal, G.
- Abstract
In this study, the effect of chemical oxygen demand/nitrogen (COD/N) and pH on nitrificationdentrification was investigated by operating a sequencing batch reactor with the use of aeration duration control, coupled with a membrane bioreactor (MBR) system to improve the efficiency of nutrient removal. Among the COD/N ratios of 2, 4 and 6, the removal efficiencies of NH4+ , NO3- and NO2- in permeate, were the highest at 92.31, 80.69 and 93.63% respectively, at the COD/N ratio of 6. This ratio is an important factor to be considered for successful nitrogen removal. For pH values of 5.5, 7.6 and 9 there was a great difference in the removal of NH4+, NO3- and NO2- with pH 7.6 were the highest at 92.31, 84.51 and 93.63%, respectively. This implies that a pH above 7.6 should be maintained for a nutrient removal efficiency of approximately 90%.
- Subjects
WATER aeration; MEMBRANE reactors; BIOREACTORS; ARTIFICIAL membranes; CARBON; NITROGEN; HYDROGEN-ion concentration
- Publication
Desalination & Water Treatment, 2013, Vol 51, Issue 4-6, p1057
- ISSN
1944-3994
- Publication type
Article
- DOI
10.1080/19443994.2012.694244