What is the organic loading rate in lbs BOD5 / 1000ft2 / day for a flow with a BOD5 of 190 mg/l at a rate of 0.80 gallon per minute?

What is the organic loading rate in lbs BOD5 / 1000ft2 / day for a flow with a BOD5 of 190 mg/l at a rate of 0.80 gallon per minute?

• A. 4
• B. 10
• C. 2
• D. 1

Answer: (C)

To determine the organic loading rate in pounds of BOD5 per 1000 square feet per day, it's important to follow a specific calculation process involving the flow rate and the concentration of BOD5. First, we convert the flow rate from gallons per minute (gpm) to a daily volume in gallons. Since there are 1440 minutes in a day, the flow rate in gallons per day is calculated as: 0.80 gpm × 1440 minutes/day = 1152 gallons/day. Next, we need to convert the concentration of BOD5 from milligrams per liter (mg/l) to pounds per gallon. Given that 1 mg/l is equivalent to 0.00000834 pounds per gallon, we can calculate the BOD5 in pounds per day with the following steps: 1. Convert BOD5 concentration to pounds per gallon: 190 mg/l × 0.00000834 pounds/mg = 0.001583 pounds/gallon. 2. Now, calculate the total BOD5 loading in pounds per day: 0.001583 pounds/gallon × 1152 gallons/day = 1.821 pounds/day. Finally, to find the organic loading rate per

To determine the organic loading rate in pounds of BOD5 per 1000 square feet per day, it's important to follow a specific calculation process involving the flow rate and the concentration of BOD5.

First, we convert the flow rate from gallons per minute (gpm) to a daily volume in gallons. Since there are 1440 minutes in a day, the flow rate in gallons per day is calculated as:

0.80 gpm × 1440 minutes/day = 1152 gallons/day.

Next, we need to convert the concentration of BOD5 from milligrams per liter (mg/l) to pounds per gallon. Given that 1 mg/l is equivalent to 0.00000834 pounds per gallon, we can calculate the BOD5 in pounds per day with the following steps:

1. Convert BOD5 concentration to pounds per gallon:

190 mg/l × 0.00000834 pounds/mg = 0.001583 pounds/gallon.

2. Now, calculate the total BOD5 loading in pounds per day:

0.001583 pounds/gallon × 1152 gallons/day = 1.821 pounds/day.

Finally, to find the organic loading rate per