Engineering Board Exam Reviewer · Environmental Engineering · medium

A treatment plant receives 5000 m3/day of wastewater with a BOD of 200 mg/L. What is the BOD mass loading?

1. 1,000,000 kg/day
2. 25 kg/day
3. 1000 kg/day
4. 40 kg/day

Answer

C. 1000 kg/day

Solution

Load = Q × C = 5000 m3/d × 200 g/m3 = 1,000,000 g/d = 1000 kg/day.

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