Combined equipment for treating organic wastewater with high salinity and high concentration

Combined equipment for treating organic wastewater with high salinity and high concentration belongs to the technical field of wastewater treatment. A physical adsorption tank (1) with closed upper end, an oil-water separation tank (2), a coagulation air floatation tank (3), an oxidation reaction tank (4), a concentrate crystallization device (5), an oxidation reaction tank (6), and a biological treatment tank (7) are connected to form the combined equipment through water outlet pipes and water inlet pipes. The water inlet pipe of the physical adsorption tank (1) serves as the inlet for waste water ready for treatment and the water outlet pipe of the biological treatment tank (7) serves as the water outlet for treated waste water. The combined equipment fills the gap in the prior art, by brief and effective combining of various equipment, the salinity in organic wastewater can be efficiently extracted, COD, NH4-N is reduced and toxicity is removed, and the treated water with COD, NH3-N, PH meeting the petroch