PROCESS FOR SELECTIVE REMOVAL AND RECOVERY OF CHROMATES FROM WATER

摘要

An improved anion-exchange process for the removal and recovery of trace quantities of chromates from water. The process utilizes a bed of basic anion-exchange resin and the combination of upflow exhaustion of the chromates from the water and downflow regeneration of the resin. Efficient recovery of chromates is accomplished while virtually eliminating chromate leakage during the initial portion of the exhaustion operation. Regeneration can be accomplished without the use of strong, expensive chemicals.