Calculations predict, and testing confirms, that the solubility's of calcium carbonate and magnesium hydroxide are increased substantially in concentrated cooling waters. Silica reduction is shown to be kinetically controlled. A knowledge of the system allows prediction of effluent silica concentrations.

81-08: Chemistry of Sidestream Softening and Silica Reduction

  • James T. Knight, Graver Water Division Ecodyne Corp.