This work investigated the biodetoxification of oilfield produced water (OPW) using indigenous microbial consortium in discontinuous aerobic biological treatment (Bio-Unit) system. The pilot scale Bio-Unit has a single tank that is operated cyclically. The Bio-Unit performance was compared with that of an extant physical treatment unit (PTU) of a crude oil facility. The pilot scale Bio-Unit achieved higher effluent indices at optimal conditions of microbial retention time of 21 days and hydraulic retention time of 24 hours. The percentage removal of Total Dissolved Solids (TDS), Total Suspended Solids (TSS), Total Organic Carbon (TOC), Salinity and Chemical Oxygen Demand (COD) using the Bio-Unit were 98.2%, 96.8%, 98.5%, 96.7%, 97.6%, respectively, while for the physical treatment (PTU) process were 31.5%, 55.3%, 82.2%, 37.1% and 73.8%, respectively. Comparison showed that the Bio-Unit performed better than the extant PTU. The after-treatment concentrations of TOC (83.1 mg/l), Salinity (2290.7 mg/l) and COD (152.6 mg/l) from the existing physical treatment unit (PTU) were above Nigerian DPR inland and nearshore permissible level, while the after-treatment concentrations of TOC (6.81mg/l), Salinity (120.03 mg/l), and COD (14.1 mg/l) from the pilot scale Bio-Unit were below the regulatory limits. Therefore, it is proposed that the extant PTU be upgraded by retrofitting it with the Bio-Unit so as to meet produced water quality requirement for reinjection into oil reservoir or disposal to the environment.
| Published in | American Journal of Chemical Engineering (Volume 11, Issue 5) |
| DOI | 10.11648/j.ajche.20231105.12 |
| Page(s) | 95-101 |
| Creative Commons |
This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited. |
| Copyright |
Copyright © The Author(s), 2024. Published by Science Publishing Group |
Oilfield Produced Water, Physical Treatment, Discontinuous Bio-Unit, Microbial Consortium, Biodecontamination
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APA Style
Nwokoma, D. B., Dagde, K. K. (2023). Microbial Detoxification of Oilfield Produced Water Using Discontinuous Bio-Unit System. American Journal of Chemical Engineering, 11(5), 95-101. https://doi.org/10.11648/j.ajche.20231105.12
ACS Style
Nwokoma, D. B.; Dagde, K. K. Microbial Detoxification of Oilfield Produced Water Using Discontinuous Bio-Unit System. Am. J. Chem. Eng. 2023, 11(5), 95-101. doi: 10.11648/j.ajche.20231105.12
AMA Style
Nwokoma DB, Dagde KK. Microbial Detoxification of Oilfield Produced Water Using Discontinuous Bio-Unit System. Am J Chem Eng. 2023;11(5):95-101. doi: 10.11648/j.ajche.20231105.12
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Download@article{10.11648/j.ajche.20231105.12,
author = {Darlington Bon Nwokoma and Kenneth Kekpugile Dagde},
title = {Microbial Detoxification of Oilfield Produced Water Using Discontinuous Bio-Unit System},
journal = {American Journal of Chemical Engineering},
volume = {11},
number = {5},
pages = {95-101},
doi = {10.11648/j.ajche.20231105.12},
url = {https://doi.org/10.11648/j.ajche.20231105.12},
eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ajche.20231105.12},
abstract = {This work investigated the biodetoxification of oilfield produced water (OPW) using indigenous microbial consortium in discontinuous aerobic biological treatment (Bio-Unit) system. The pilot scale Bio-Unit has a single tank that is operated cyclically. The Bio-Unit performance was compared with that of an extant physical treatment unit (PTU) of a crude oil facility. The pilot scale Bio-Unit achieved higher effluent indices at optimal conditions of microbial retention time of 21 days and hydraulic retention time of 24 hours. The percentage removal of Total Dissolved Solids (TDS), Total Suspended Solids (TSS), Total Organic Carbon (TOC), Salinity and Chemical Oxygen Demand (COD) using the Bio-Unit were 98.2%, 96.8%, 98.5%, 96.7%, 97.6%, respectively, while for the physical treatment (PTU) process were 31.5%, 55.3%, 82.2%, 37.1% and 73.8%, respectively. Comparison showed that the Bio-Unit performed better than the extant PTU. The after-treatment concentrations of TOC (83.1 mg/l), Salinity (2290.7 mg/l) and COD (152.6 mg/l) from the existing physical treatment unit (PTU) were above Nigerian DPR inland and nearshore permissible level, while the after-treatment concentrations of TOC (6.81mg/l), Salinity (120.03 mg/l), and COD (14.1 mg/l) from the pilot scale Bio-Unit were below the regulatory limits. Therefore, it is proposed that the extant PTU be upgraded by retrofitting it with the Bio-Unit so as to meet produced water quality requirement for reinjection into oil reservoir or disposal to the environment.
},
year = {2023}
}
TY - JOUR T1 - Microbial Detoxification of Oilfield Produced Water Using Discontinuous Bio-Unit System AU - Darlington Bon Nwokoma AU - Kenneth Kekpugile Dagde Y1 - 2023/12/22 PY - 2023 N1 - https://doi.org/10.11648/j.ajche.20231105.12 DO - 10.11648/j.ajche.20231105.12 T2 - American Journal of Chemical Engineering JF - American Journal of Chemical Engineering JO - American Journal of Chemical Engineering SP - 95 EP - 101 PB - Science Publishing Group SN - 2330-8613 UR - https://doi.org/10.11648/j.ajche.20231105.12 AB - This work investigated the biodetoxification of oilfield produced water (OPW) using indigenous microbial consortium in discontinuous aerobic biological treatment (Bio-Unit) system. The pilot scale Bio-Unit has a single tank that is operated cyclically. The Bio-Unit performance was compared with that of an extant physical treatment unit (PTU) of a crude oil facility. The pilot scale Bio-Unit achieved higher effluent indices at optimal conditions of microbial retention time of 21 days and hydraulic retention time of 24 hours. The percentage removal of Total Dissolved Solids (TDS), Total Suspended Solids (TSS), Total Organic Carbon (TOC), Salinity and Chemical Oxygen Demand (COD) using the Bio-Unit were 98.2%, 96.8%, 98.5%, 96.7%, 97.6%, respectively, while for the physical treatment (PTU) process were 31.5%, 55.3%, 82.2%, 37.1% and 73.8%, respectively. Comparison showed that the Bio-Unit performed better than the extant PTU. The after-treatment concentrations of TOC (83.1 mg/l), Salinity (2290.7 mg/l) and COD (152.6 mg/l) from the existing physical treatment unit (PTU) were above Nigerian DPR inland and nearshore permissible level, while the after-treatment concentrations of TOC (6.81mg/l), Salinity (120.03 mg/l), and COD (14.1 mg/l) from the pilot scale Bio-Unit were below the regulatory limits. Therefore, it is proposed that the extant PTU be upgraded by retrofitting it with the Bio-Unit so as to meet produced water quality requirement for reinjection into oil reservoir or disposal to the environment. VL - 11 IS - 5 ER -
Department of Chemical Engineering, Rivers State University, Port Harcourt, Nigeria
Department of Chemical Engineering, Rivers State University, Port Harcourt, Nigeria
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