How many total grams of alum are added daily if the operator uses an average alum feed of 51.4 mg/L on a flow of 5.5 million gallons?

To determine the total grams of alum added daily, we first need to convert the flow rate from million gallons per day to liters, as the alum dosage is given in milligrams per liter (mg/L).

1. Convert flow to liters:

• One million gallons is approximately equal to 3,785,411.78 liters.

• Therefore, for 5.5 million gallons:

[

5.5 \text{ million gallons} \times 3,785,411.78 \text{ L/million gallons} = 20,812,891 \text{ liters}

]

2. Calculate the total daily alum feed:

• The average feed of alum is 51.4 mg/L.

• To find out the total milligrams of alum added daily, multiply the alum concentration by the total flow in liters:

[

51.4 \text{ mg/L} \times 20,812,891 \text{ L} = 1,070,579,319.4 \text{ mg/day}

]

3. Convert milligrams to grams:

• Since there are 1,000