Removal of uranium from drinking water by ion exchange and chemical clarification

Abstract

A pilot demonstration was conducted of ion exchange and chemical clarification equipment for removing uranium from drinking water. Four commercial-type ion exchange columns and a prefiltering and regeneration solution system were constructed along with a pilot-scale chemical clarification unit. These units were assembled and installed in a van trailer for location at a well site containing uranium-contaminated water. Uranium concentrations in the well varied during the study period from 190 to 400{mu}g/L. The four ion exchange columns each contained 2 ft/sup 3/ of resin. Three different ion exchange resins were used. The 1-gal/min chemical clarification unit consisted of a rapid-mix tank and precoat rotary vacuum filter. In addition to the pilot study, the report analyzes several currently operating water treatment systems whose feed supplies contain uranium. Cost analysis data for capital equipment is also included in the report along with a discussion of ultimate disposal methods for uranium-containing water treatment wastes.