The process characteristics were briefly introduced

water source and qualities of high-salt wastewater for the rare earth separation were analyzed. It came up with the preliminary treatment towards extraction agent

heavy metal and radiation. Then carbonaceous sediment mother liquor was merged along and crystallized after evaporation. Direct evaporation shall be done upon oxalic acid sediment to collect hydrochloric and oxalic acid. The condensed water from evaporation will be returned for process water from which the industrial salt will be generated which can be sold as by-product. The technology has been proven effective and economical which has realized zero discharge of high salt waste water.