Hardness and fluorine removal equipment and method for high-salinity wastewater

The invention provides hardness and fluorine removal equipment for high-salinity wastewater. The hardness and fluorine removal equipment comprises a pretreatment device; the ultrafiltration device is connected with the pretreatment device; the nanofiltration device is connected with the ultrafiltration device; the first evaporation crystallizer and the ion exchange resin are respectively connected with the nanofiltration device; the adsorption tower and the second evaporation crystallizer are connected with the ion exchange resin, and the pretreatment device comprises a first reaction tank and a second reaction tank which are connected in an overflow manner; the settling tank is connected with the second reaction tank; and the high-efficiency sedimentation tank is connected with the sedimentation tank. The deep hardness and fluorine removal of the wastewater is realized through the cooperation of the pretreatment device comprising two-stage reaction and two-stage precipitation and the subsequent ultrafiltrati