Evaluation of membrane bioreactor for hypersaline oily wastewater treatment |
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| Authors: | Ali Reza Pendashteh Luqman Chuah Abdullah A Fakhru’l-Razi Sayed Siavash Madaeni Zurina Zainal Abidin Dayang Radiah Awang Biak |
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| Institution: | 1. Department of Chemical and Environmental Engineering, University Putra Malaysia, 43400 UPM Serdang, Selangor D.E., Malaysia;2. Environmental Research Institute, Iranian Academic Center for Education, Culture & Research (ACECR), Rasht, Iran;3. Chemical Engineering Department, Razi University, Kermanshah, Iran;1. Institute of Oceanic and Environmental Chemical Engineering, College of Chemical Engineering and Material Science, Zhejiang University of Technology, Hangzhou 310014, PR China;2. Department of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, PR China;1. Institute for Coastal Marine Environment (IAMC)-CNR of Messina, Messina, Italy;2. Dep. of Industrial Engineering, Faculty of Engineering, University of Catania, Catania, Italy;3. Faculty of Science MM. FF. NN. Ph.D School in “Biology and Cellular Biotechnology”, University of Messina, Italy;4. Dep, of Civil, Environmental, Aerospatial, Material Engineering, Faculty of Engineering, University of Palermo, Palermo, Italy;5. Dept. of “Scienze e Tecnologie Biologiche, Chimiche e Farmaceutiche” (STEBICEF), University of Palermo, Italy;1. Department of Biotechnology and Life Sciences, University of Insubria, Via Dunant 3, 21100, Varese, Italy;2. Electric, Electronics and Computer Engineering Department, University of Catania, Viale Andrea Doria 6, 95125, Catania, Italy;3. Institute for Coastal Marine Environment, National Research Center, Via San Raineri 86, 98122 Messina, Italy;4. “The Protein Factory” Research Center, Politecnico di Milano, ICRM-CNR Milano and Università dell’Insubria, Via Mancinelli 7, 20131, Milano, Italy |
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| Abstract: | Produced water is a significant waste stream generated in association with oil and gas production. It contains high concentrations of hydrocarbon constituents and different salts. In this study, a membrane sequencing batch reactor (MSBR) was used to treat synthetic and real produced water. The MSBR was evaluated in terms of biodegradation of hydrocarbons in the synthetic produced water with various organic loading rates (OLR) (0.281, 0.563, 1.124, 2.248, and 3.372 kg COD/(m3 day)), cycle time (12, 24, and 48 h), and membrane performance. The effects of salt concentrations at different total dissolved solids (TDS) (35,000, 50,000, 100,000, 150,000, 200,000, and 250,000 mg/L) on biological treatment of the pollutants in the synthetic and real wastewater were studied. At an OLR of 1.124 kg COD/(m3 day), an HRT of 48 h and TDS of 35,000 mg/L, removal efficiencies of 97.5%, 97.2%, and 98.9% of COD, total organic carbon (TOC), and oil and grease (O&G), respectively were achieved. For the real produced water, removal rates of 86.2%, 90.8%, and 90% were obtained for the same conditions. However, with increasing salt content, the COD-removal efficiencies of the synthetic and real produced water were reduced to 90.4% and 17.7%, respectively at the highest TDS. |
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