Let's reason out this one. How many gallons would be 1 ppm for a 5MGD flow? 5gallons in 5 million gallons is one ppm, RIGHT? So half that would be 0.5 ppm. So, 2.5 gallons of liquid polymer in a 5 million gallon daily flow will be a 0.5 ppm dosage.
If 2.5 gallons are used each day then 55gallons (1 drum)/2.5 gallons per day will give us the number of days the drum will last. The drum will last 22 days.
Did you get this answer? Bill
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Please send your question or comment. I will try to respond within a few days. Bill