Oily wastewater

The contamination of water sources by oily compounds has been a serious environmental threat for researchers in recent years because oily compounds are emulsified, and their separation is difficult. Photocatalytic degradation of toxic pollutants has been developed as a very prominent and effective wastewater treatment technique. A lot of scientific research is going on all over the world to increase the photocatalytic efficiency of wastewater treatment processes. Using photocatalytic membranes has shown inspiring results in treating oily wastewater. Utilizing the photocatalyst in a membrane is the best solution for the treatment of oily wastewater treatments. In this chapter, an attempt is made to explore the oily wastewater sources, and various treatment methods, focusing on photocatalysis and photocatalytic membranes for oily wastewater treatment, and finally, future perspectives of photocatalytic membranes for oily wastewater treatment methods. The potential of the photocatalytic membranes for oily wastewater is more advantageous and economical compared to other traditional processes.