Research Progress on the Organic Composition of Petrochemical Wastewaters

Petrochemical wastewaters are a typical category of industrial wastewaters during the processing of different oil products. Confronting many practical problems, such as the quality deterioration of crude oil and technical constraints, the conflict between the high toxicity of petrochemical wastewaters and the increasingly stringent environmental requirements becomes particularly intense. Therefore, under the new situations which the quantity and treatment difficulty of petrochemical wastewaters are growing quickly, the overall understanding of petrochemical wastewaters’ origin, classification and composition is of great importance for the improvement of sewage treatment processes and the sustainable development of petrochemical enterprises.