Sulfate treatment especially in industrial wastewaters is gaining impo
rtance. Chemical precipitation with barium carbonate is an applicable
process for removing sulfate if it proves economically feasible. This
paper attempts to evaluate the theoretical basis and limitations of th
e process. Experiments am run on synthetic and industrial wastewaters
to verify and discuss the theoretical predictions. Results indicate th
at theoretical predictions are accurate enough provided that the mecha
nisms involved and realistic constants can be defined.