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- Chemical Oxygen Demandsearch for term
- "A measure of the oxygen-consuming capacity of inorganic and organic matter present in wastewater. COD is expressed as the amount of oxygen consumed in mg/l. Results do not necessarily correlate to the biochemical oxygen demand (BOD) because the chemical oxidant may react with substances that bacteria do not stabilize." [US (EPA Permit Writer's Manual, 1996), pg. G-3])