Skid-mounted air floatation coagulation treatment device for oily wastewater of oil field

A skid-mounted air floatation coagulation treatment device for oily wastewater of an oil field is characterized in that pulleys are arranged under a base, the left side of the base is provided with a purified water tank connected with a wastewater tank, a pre-filtration water tank and an air floatation tank communicated with each other are arranged on the side wall of the purified water tank, the external bottom of the air floatation tank is provided with an electric control cabinet, the right side of the base is provided with a dissolved air vessel and two-stage quartz sand filters connected in series, the outlet of the two-stage quartz sand filters is communicated with the purified water tank by a pipeline, a stirrer-equipped reactor is arranged on the two-stage quartz sand filters, the reactor is communicated with the air filtration tank and is also communicated with a chemical feeding box by a constant flow pump, the middle part of the base is provided with a wastewater pump, a pre-filtration water pump a