Produced water treatment system is mainly used for cleaning of the produced water, oily water, and seawater to meet the quality requirement of environment protection standard. The oily water is slightly alkaline, low hardness, less iron and high salinity; the treatment mainly adopts the physical and chemical principles of sedimentation, coagulation, air flotation, filtration, biological treatment, and use of hydrocyclone. 

The types of equipment include inclined plate degreaser device (CPI), dual media filter device, hydrocyclone device, various types of settling tank device, various types of gas flotation device, various types of filter device and so on.