Oily wastewater recycling and wastewater treatment system and treatment method thereof

The invention discloses an oily wastewater recycling and wastewater treatment system and a treatment method thereof, belonging to the field of oily wastewater treatment. The system mainly comprises a raw water regulating tank, an ultrafiltration separation unit, an oil storage tank, an incinerator, a fume emission tower, a biogas storage tank, an anaerobic reactor, a three-phase separator, an aerobic reactor, a precipitation tank and a sludge concentration tank. The ultrafiltration separation unit adopts an organic-inorganic composite ultrafiltration membrane, can effectively utilize oil substances in the oily wastewater, implements waste recycling, and ensures the treated oily wastewater to be stably discharged after reaching the standard. The complete production system has the characteristics of energy saving, consumption reduction, pollution reduction and effect enhancement.