Author/Authors :
Jafarzadeh Ghehi، Tahereh نويسنده Department of Environmental Health Engineering, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran , , Mortezaeifar، Soheil نويسنده Department of Environmental Engineering (Water Resources), Science and Research Branch, Faculty of Environment and Energy (FEE), Islamic Azad University, Tehran, Iran , , Gholami، Mitra نويسنده 1Depatment of Environmental Engineering, School of Public Health, Center for Water Quality Research, Tehran University of Medical Sciences, Tehran, Iran , , Rezaei Kalantary، Roshanak نويسنده Department of Environmental Health, School of Health, Tehran University of Medical Sciences, Tehran, Iran. Rezaei Kalantary, Roshanak , Mahvi، Amir Hossein نويسنده Department of Environmental Health Engineering, School of Health; National Institute of Health Research; Center for Solid Waste Research, Institute fo ,
Abstract :
Background: Simultaneous nitrogen, phosphorous and COD removal in a pilot-scale enhanced Sequencing Batch
Reactor (eSBR) was investigated.
Methods: The reactor consisted of a pre-anoxic zone and internal recycle and was fed with synthetic wastewater.
The study was performed by operating the reactor in 6-hour cycles in three different operational modes during a
time frame of 279 days.
Results: Under the best operational conditions, the average removal rate of COD, TN, and TP were obtained as
93.52, 88.31, and 97.56%, respectively.
Conclusions: A significant denitrifying phosphorus removal (more than 80%) occurred at run1 and 3 which started
the cycle under anoxic condition.
