In the determination of the BOD of a water sample, it was found that the DO level was 8.4ppm before incubation and 6.3ppm after five days of incubation. What is the BOD of this sample? Would the water sample support aquatic life?
Answer:
The difference between the D.O. is the B.O.D..
8.4 - 6.3 = 2.1 ppm
The water quality is very good ( not much organic waste present)
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