| Abstract: | ABSTRACT: A computer model capable of describing the behavior of pH-determining parameters in an impoundment is presented. The steady-state model, based upon principles of water chemistry, applies the complete-mix concept to the routing of the chemical quantities, alkalinity and CO2 acidity. An iterative procedure is used to account for surface mass transfer of carbon dioxide. A fourth-degree polynomial is solved for the hydrogen ion concentration at each point of routed alkalinity and CO2 acidity concentrations. Field data required to verify and apply the model are described, including an example application to the Loyalhanna Creek Reservoir. |
