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Abstract
The sequencing batch reactor has emerged as a promising technology in treating wastewater; however, its application in the treatment of generated water still needs to be explored. This research gap led to the investigation of various carbon-to-nitrogen (C/N) ratios in a column-type sequencing batch reactor (cSBR). The resulting data and model demonstrated that augmenting the SND process with an external carbon source is effective until the C/N ratio reaches 15, ultimately eliminating nitrogen in the produced water. Conversely, a reduced C/N ratio can limit the ability of polyphosphate-accumulating organisms to incorporate carbon into polyphosphate synthesis, thereby decreasing phosphorus removal efficiency within the cSBR. When the C/N ratio ranged from 6 to 8, and the mixed liquor suspended solids concentration was high, the average phosphate removal was approximately 55%, compared to only around 25% when the C/N ratio was less than 6.
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1 King Fahd University of Petroleum and Minerals, Interdisciplinary Research Center for Membranes and Water Security (IRC-MWS), Dhahran, Saudi Arabia (GRID:grid.412135.0) (ISNI:0000 0001 1091 0356)
2 Birla Institute of Technology and Science, Pilani Hyderabad Campus, Department of Civil Engineering, Hyderabad, India (GRID:grid.466497.e) (ISNI:0000 0004 1772 3598)
3 Indian Institute of Science, Interdisciplinary Centre for Water Research (ICWaR), Bangalore, India (GRID:grid.464869.1) (ISNI:0000 0000 9288 3664)
4 Indian Institute of Technology, Department of Biosciences and Bioengineering, Roorkee, India (GRID:grid.19003.3b) (ISNI:0000 0000 9429 752X)
5 Aligarh Muslim University, Civil Engineering Department, Zakir Hussain College of Engineering and Technology, Aligarh, India (GRID:grid.411340.3) (ISNI:0000 0004 1937 0765)
6 Laval University, Chemical Engineering Department, Quebec, Canada (GRID:grid.23856.3a) (ISNI:0000 0004 1936 8390)
7 King Fahd University of Petroleum and Minerals, Interdisciplinary Research Center for Membranes and Water Security (IRC-MWS), Dhahran, Saudi Arabia (GRID:grid.412135.0) (ISNI:0000 0001 1091 0356); King Fahd University of Petroleum and Minerals, Mechanical Engineering Department, Dhahran, Saudi Arabia (GRID:grid.412135.0) (ISNI:0000 0001 1091 0356)
8 King Fahd University of Petroleum and Minerals, Interdisciplinary Research Center for Membranes and Water Security (IRC-MWS), Dhahran, Saudi Arabia (GRID:grid.412135.0) (ISNI:0000 0001 1091 0356); King Fahd University of Petroleum and Minerals, Chemical Engineering Department, Dhahran, Saudi Arabia (GRID:grid.412135.0) (ISNI:0000 0001 1091 0356)