Citation
Ahmadun, Fakhru'l Razi and Pendashteh, Alireza and Zainal Abidin, Zurina and Abdullah, Luqman Chuah and Awang Biak, Dayang Radiah and Madaeni, Sayed Siavash
(2010)
Application of membrane-coupled sequencing batch reactor for oilfield produced water recycle and beneficial re-use.
Bioresource Technology, 101 (18).
pp. 6942-6949.
ISSN 0960-8524; ESSN: 1873-2976
Abstract
Oil and gas field wastewater or produced water is a significant waste stream in the oil and gas industries. In this study, the performance of a membrane sequencing batch reactor (MSBR) and membrane sequencing batch reactor/reverse osmosis (MSBR/RO) process treating produced wastewater were investigated and compared. The MSBR was operated in different hydraulic residence time (HRT) of 8, 20 and 44 h. Operation results showed that for a HRT of 20 h, the combined process effluent chemical oxygen demand (COD), total organic carbon (TOC) and oil and grease (O&G) removal efficiencies were 90.9%, 92% and 91.5%, respectively. The MSBR effluent concentration levels met the required standard for oil well re-injection. The RO treatment reduced the salt and organic contents to acceptable levels for irrigation and different industrial re-use. Foulant biopsy demonstrated that the fouling on the membrane surface was mainly due to inorganic (salts) and organic (microorganisms and their products, hydrocarbon constituents) matters.
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