A measure of the amount of oxygen, divided by the volume of the system, required to
oxidize the organic (and inorganic) matter in wastewater using a chemically oxidizing
agent. In practice, it is usually expressed in milligrams
O2
per
litre.
Source:
PAC, 1992, 64, 143
(Glossary for chemists of terms used in biotechnology (IUPAC Recommendations 1992))
on page 149
)