Application of Membrane Bioreactor and Reverse Osmosis to Convert Oilfield Produced Water to Reusable Quality

Produced water (water co-produced with oil and gas) is the largest waste stream in the oil and gasactivities. In this study a membrane sequencing bioreactor (MSBR) was employed for treatment ofoilfield produced water. Acclimated halophilic microorganisms were used as seed culture for biologicalunit. A revese osmosis (RO) unit was employed to desalinate the MBR effluent. The removal rates of themain pollutants of the wastewater such as chemical oxygen demand (COD), total organic carbon (TOC)and oil and grease (O&G) were above ۸۱, ۸۳, and ۸۵%, respectively. It was thus feasible to treat theproduced water using the MSBR/RO, and the product quality met the requirements for discharge andreuse.

کلیدواژه ها:

oilfield produced water ، reuse ، membrane ، membrane bioreactor