The treatment of emulsified wastewater and Zn3(PO4)2 wastewater from the processing factories of Tianjin Steel Pipe Co.,Ltd.is introduced.The previous technologies such as separating oil,demulsification,air floatation,coagulation sedimentation,filtration and so on have been reformed.The results show that the discharge meets the relevant standards.In addition,the emulsified wastewater can also be treated by the above process.