High-salinity wastewater treatment system

The invention discloses a high-salinity wastewater treatment system. The system comprises a pretreatment device, a preconcentration device and a membrane concentration device which are connected in sequence in the wastewater flowing direction, and further comprises a desulfurization, denitrification and dust collection integrated device and a circulating fluidized bed boiler, wherein the concentrated water delivery outlet of the membrane concentration device is communicated with the water inlet of the desulfurization, denitrification and dust collection integrated device through a pipeline; the flue gas outlet of the circulating fluidized bed boiler is communicated with the flue gas feed opening of the desulfurization, denitrification and dust collection integrated device a gas inlet pipe; a desulfurizing agent inlet and a denitrifying agent inlet are formed in the gas inlet pipe; the flue gas delivery outlet of the desulfurization, denitrification and dust collection integrated device is communicated with a