Question

What is biological oxygen demand and chemical oxygen demand

Answer 1

Biochemical Oxygen Demand is the amount of dissolved oxygen needed by aerobic biological organisms to break down organic material present in a given water sample at certain temperature over a specific time period........

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Answer 2

BOD:: Biochemical oxygen demand is the amount of dissolved oxygen needed by aerobic biological organisms to break down organic material present in a given water sample at certain temperature over a specific time period

COD:: Chemical Oxygen Demand is the total measurement of all chemicals (organics & in-organics) in the water / waste water

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