A Simplified Model to Simulate pH and Alkalinity in the Mixing Zone Downstream of an Acidic Discharge

摘要: A modelling methodology was developed that simulates the resulting pH and alkalinity in mixing zone when acidic water is discharged into a river. The input to model are the: pH, alkalinity, flow, temperature of both river discharge. Two different scenarios were simulated: (1) change discharge, assuming constant flow; (2) flow pH. incorporates effect carbonic acid modelled values agree well with laboratory results. setup subsequently used predict anticipated contamination Zambezi River Mozambique. results indicate will be impacted if average tributaries coming from mining area below 3. could by managers potential impact discharges poorly monitored rivers.