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Evaluation of Activated Sludge Microfiltration for Refinery Wastewater Reuse

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A pilot-scale study was performed to determine whether microfiltration is a suitable technology for incorporation into an existing refinery wastewater treatment system to improve performance and provide opportunities for water reuse. The study was conducted in three phases to evaluate various operating conditions. Optimal conditions tested in Phase 3 proved to be an air flow rate of 0.70 Nm3/h·m2 at low trans-membrane pressure (less than 1.5 PSI) and high fluxes of 31 to 35 l/m2/h. The pilot demonstrated that the permeate quality can achieve RO feed water requirements in regard to SDI and solids concentration. The membranes endured high O&G concentrations, high wastewater temperature, and polymer overdosing conditions upstream that proved the robustness of this reuse solution in actual refinery wastewater treatment field conditions.

Keywords: Activated Sludge; Filtration; Membrane Bioreactor; Microfiltration; Refinery wastewater reuse; Reverse

Document Type: Research Article


Publication date: January 1, 2010

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  • Proceedings of the Water Environment Federation is an archive of papers published in the proceedings of the annual Water Environment Federation® Technical Exhibition and Conference (WEFTEC® ) and specialty conferences held since the year 2000. These proceedings are not peer reviewed.

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