Ace the Florida Wastewater Test 2025 – Dive In and Make a Splash!

To determine the chlorine dosage in mg/L, you need to convert the amount of chlorine used from pounds to milligrams and then relate it to the flow of wastewater in gallons per day.

First, remember that:

1 pound is equivalent to 453,592 milligrams. Therefore, if 3 pounds of chlorine are used, that converts to:

3 lbs × 453,592 mg/lb = 1,360,776 mg of chlorine.

Next, since this amount is used for a flow of 85,000 gallons per day, you can calculate the dosage in mg/L. To do this, you need to convert the flow from gallons to liters, where 1 gallon is approximately 3.78541 liters. Thus:

85,000 gallons × 3.78541 L/gallon = 321,080 liters.

Now, the dosage in mg/L can be calculated using the formula:

Dosage (mg/L) = (Total amount of chlorine in mg) / (Flow in liters).

Plugging in the values:

Dosage (mg/L) = 1,360,776 mg / 321,080 L ≈ 4.24 mg/L.

This result rounds to approximately 4.2 mg/L,