Biological treatment of produced water in a sequencing batch reactor by a consortium of isolated halophilic microorganisms

60Citations
Citations of this article
68Readers
Mendeley users who have this article in their library.
Get full text

Abstract

Produced water or oilfield wastewater is the largest volume of a waste stream associated with oil and gas production. The aim of this study was to investigate the biological pretreatment of synthetic and real produced water in a sequencing batch reactor (SBR) to remove hydrocarbon compounds. The SBR was inoculated with isolated tropical halophilic microorganisms capable of degrading crude oil. A total sequence of 24 h (60 min filling phase; 21 h aeration; 60 min settling and 60 min decant phase) was employed and studied. Synthetic produced water was treated with various organic loading rates (OLR) (0.9 kg COD m-3 d-1, 1.8 kg COD m-3 d-1 and 3.6 kg COD m-3 d-1) and different total dissolved solids (TDS) concentration (35,000 mg L-1, 100,000 mg L-1, 150,000 mg L-1, 200,000 mg L -1 and 250,000 mg L-1). It was found that with an OLR of 0.9 kg COD m-3 d-1 and 1.8 kg COD m-3 d-1, average oil and grease (OG) concentrations in the effluent were 7 mg L-1 and 12 mg L-1, respectively. At TDS concentration of 35,000 mg L-1 and at an OLR of 1.8 kg COD m-3d-1, COD and OG removal efficiencies were more than 90%. However, with increase in salt content to 250,000 mg L-1, COD and OG removal efficiencies decreased to 74% and 63%, respectively. The results of biological treatment of real produced water showed that the removal rates of the main pollutants of wastewater, such as COD, TOC and OG, were above 81%, 83 %, and 85%, respectively. © 2010 Taylor & Francis.

Cite

CITATION STYLE

APA

Pendashteh, A. R., Fakhru’L-Razi, A., Chuah, T. G., Radiah, A. B. D., Madaeni, S. S., & Zurina, Z. A. (2010). Biological treatment of produced water in a sequencing batch reactor by a consortium of isolated halophilic microorganisms. Environmental Technology, 31(11), 1229–1239. https://doi.org/10.1080/09593331003646612

Register to see more suggestions

Mendeley helps you to discover research relevant for your work.

Already have an account?

Save time finding and organizing research with Mendeley

Sign up for free