Measurement of rate of oxygen utilisation by the unit volume of polluted water over a period of time is referred to as:
Measurement of rate of oxygen utilisation by the unit volume of polluted water over a period of time is referred to as:
The correct option is D biological oxygen demand
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. The BOD value is most commonly expressed in milligrams of
oxygen consumed per litre of sample during 5 days of incubation at 20∘C
and is often used as a surrogate of the degree of organic pollution of water.
BOD is similar in function to
chemical oxygen demand (COD), in that both measure the amount of organic
compounds in water. However, COD is less specific, since it measures everything
that can be chemically oxidized, rather than just levels of biodegradable
organic matter
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. The BOD value is most commonly expressed in milligrams of oxygen consumed per litre of sample during 5 days of incubation at 20∘C and is often used as a surrogate of the degree of organic pollution of water.
BOD is similar in function to chemical oxygen demand (COD), in that both measure the amount of organic compounds in water. However, COD is less specific, since it measures everything that can be chemically oxidized, rather than just levels of biodegradable organic matter
