Aquifers as Processing Plants for the Modification of Injected Water

摘要

Gulf Coast (Baton Rouge) Region aquifer systems offer potential for infested water storage and water composition modification. Study of natural processes on groundwater chemistry provides information on processes potentially influencing water composition during artificial recharge. Baton Rouge area fresh-water aquifer processes include fermentive breakdown of organic matter, sulfate reduction, Donnan behavior, and dissolution/formation of new silicates. Although appearing to be in exchange equilibrium with sediment clay minerals, ion-exchange influences native water composition less than previously thought. Potentially-occurring artificial recharge reactions (carbon dioxide formation and reaction with minerals; ion-exchange; diffusion) were studied. Altering montmorillonite appears to control water composition.