High-salinity wastewater discharge treatment system

The utility model provides a high-salinity wastewater discharge treatment system. The system comprises a wastewater collecting tank, an adjusting treatment tank, a multi-medium filter, an electrodialysis treatment device, a coagulating sedimentation unit, an evaporative crystallization unit, a nanofiltration unit and a reverse osmosis desalination device, the water outlet end of the wastewater collecting tank is connected with the adjusting treatment tank; the output end of the adjusting treatment tank is connected with the multi-medium filter; the output end of the multi-medium filter is connected with the electrodialysis treatment device; a concentrated water outlet end of the electrodialysis treatment device is connected with the coagulating sedimentation unit; the produced water outletend of the electrodialysis treatment device is connected with the nanofiltration unit; the water outlet end of the nanofiltration unit is connected with a reverse osmosis desalting device; wherein the water production end of