Application of moving bed biofilm reactor and fixed bed hybrid biological reactor for oilfield produced water treatment: Influence of total dissolved solids concentration

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Output type: Journal article

UM6P affiliated Publication?: Yes

Author list: Lusinier N., Seyssiecq I., Sambusiti C., Jacob M., Lesage N., Roche N.

Publisher: MDPI

Publication year: 2021

Journal: Energies (1996-1073)

Volume number: 14

Issue number: 21

ISSN: 1996-1073

eISSN: 1996-1073


Languages: English (EN-GB)

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This experimental paper deals with the development of a hybrid biological reactor for the treatment of a synthetic oilfield produced water under an increase in total dissolved solids (TDS) concentration. To comply with strengthening regulations concerning produced water discharge and peculiar produced water compositions, a moving bed biofilm reactor (MBBR) consisting in a combination of free activated sludge and moving biofilm supports was compared to a fixed bed hybrid biological reactor (FBHBR) consisting in a combination of free activated sludge and a fixed biofilm support. After a 216 days experimental period, the MBBR and the FBHBR were efficient to treat a synthetic produced water with chemical oxygen demand (COD) removal rate above 90% under an increase in TDS concentrations from 1.5 to 8 g·L−1. Ecotoxicity measurements on freshwater and marine microorganisms revealed an absence of toxicity on treated waters. A decrease in bacterial diversity indices with respect to the inoculum was observed in both bioreactors. This suggests that the increase in TDS concentrations caused the predominance of a low number of bacterial species. © 2021 by the authors. Licensee MDPI, Basel, Switzerland.


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Last updated on 2022-14-01 at 23:22