C/N ratio effect on oily wastewater treatment using column type SBR: machine learning prediction and metagenomics study.

Autor: Khan NA; Interdisciplinary Research Center for Membranes and Water Security (IRC-MWS), King Fahd University of Petroleum and Minerals, 31261, Dhahran, Saudi Arabia. nadeem.khan@mecw.ac.in., Majumder A; Department of Civil Engineering, Birla Institute of Technology and Science, Pilani Hyderabad Campus, Hyderabad, 500078, India., Singh S; Interdisciplinary Centre for Water Research (ICWaR), Indian Institute of Science, Bangalore, 560012, India., Ramamurthy PC; Interdisciplinary Centre for Water Research (ICWaR), Indian Institute of Science, Bangalore, 560012, India., Prakash SK; Department of Biosciences and Bioengineering, Indian Institute of Technology, Roorkee, Uttarakhand, India., Farooqi IH; Civil Engineering Department, Zakir Hussain College of Engineering and Technology, Aligarh Muslim University, Aligarh, India., Mozaffari N; Chemical Engineering Department, Laval University, Quebec, QC, Canada., Lawal DU; Interdisciplinary Research Center for Membranes and Water Security (IRC-MWS), King Fahd University of Petroleum and Minerals, 31261, Dhahran, Saudi Arabia.; Mechanical Engineering Department, King Fahd University of Petroleum and Minerals, 31261, Dhahran, Saudi Arabia., Aljundi IH; Interdisciplinary Research Center for Membranes and Water Security (IRC-MWS), King Fahd University of Petroleum and Minerals, 31261, Dhahran, Saudi Arabia. aljundi@kfupm.edu.sa.; Chemical Engineering Department, King Fahd University of Petroleum and Minerals, 31261, Dhahran, Saudi Arabia. aljundi@kfupm.edu.sa.
Jazyk: angličtina
Zdroj: Scientific reports [Sci Rep] 2024 Oct 03; Vol. 14 (1), pp. 22950. Date of Electronic Publication: 2024 Oct 03.
DOI: 10.1038/s41598-024-72490-0
Abstrakt: 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.
(© 2024. The Author(s).)
Databáze: MEDLINE
Externí odkaz:
Nepřihlášeným uživatelům se plný text nezobrazuje