Definitions for "BOD5"
Biochemical Oxygen Demand. Biochemical oxygen consumption after 5 days. A biological method to determine the content of biodegradable organic matter in water.
biological oxygen demand (mg/l) after 5 days at 21 C. The value used by environmental agencies to express the organic matter in fluid wastes.
The amount of dissolved oxygen consumed in five days by biological processes breaking down organic matter.