Abstract

Oily wastewater is waste originating from industries primarily engaged in refining crude oil and manufacturing fuels, lubricants and petrochemical intermediates. In this review, the characteristics and environmental impacts of oily wastewater were introduced. Methods for oily wastewater treatment were summarized based on recent literature and patents. Finally, this paper prospected the development trend of oily wastewater treatment technology.

Keywords: Biological treatment, environmental pollution, flotation, membrane, oily wastewater, petroleum industry, treatment technologies.