ABSTRACT
The flow to be treated is 880,000 gpd. Determine the gpd setting for the liquid alum chemical feeder if the liquid alum is a 55% solution.
80. A flow of 1,850,000 gpd is to be treated with alum. Jar tests indicate that the optimum alum dose is 10 mg/L. If the liquid alum contains 640 mg alum per mL solution, what should be the gpd setting for the alum solution feeder?
