AWWA ACE63191

The objectives of this slide presentation were to: detn U and Ra removal efficiencies; detn resin capacities for SAC SBA; find optimum % of SBA resin; stratified or mixed bed?; define minimum SBA bed depth for U removal; and, compare NaCl and KCl as regenerants. The presentation outlines information on uranium removal by ion exchange: use MR SBA w/wo SAC; resin selection not critical; BV run w pure anion: 300,000 BV mo; SO₄^2- will shorten run length; pH not critical in 6-9 range; typical cyclic operation 30,000--50,000 BV (60- 00 days), regen with sat'd. NaCl at 20 lbs/ft3 (4/ ), and low leakage even w incomplete regen. The presentation provides an explanation of how radium moves through the resin during sodium softening, along with analysis methods and solutions to Ra leakage. Includes tables, figures.