Your plant shows a BOD concentration of 47 mg/L with a discharge of 1.28 MGD. What is the daily discharge quantity of BOD in pounds?

To find the daily discharge quantity of BOD in pounds, the calculation involves using the following formula:

[

\text{BOD (lbs/day)} = \text{BOD concentration (mg/L)} \times \text{flow rate (MGD)} \times 8.34

]

In this scenario, the BOD concentration is 47 mg/L, and the flow rate is 1.28 MGD. The factor of 8.34 is used to convert the concentration from mg/L to pounds per day, considering that 1 mg/L of a substance in 1 million gallons of water equals 8.34 pounds.

Using the provided values:

1. Multiply the BOD concentration by the flow rate:

[

47 \text{ mg/L} \times 1.28 \text{ MGD} = 60.16 \text{ mg/day}

]

2. Now, multiply this result by 8.34 to convert to pounds:

[

60.16 \text{ mg/day} \times 8.34 \text{ lbs/mg} = 502.67 \text{ lbs/day}

]

Rounding this gives approximately