What does the term "Biochemical Oxygen Demand" (BOD) refer to?

The term "Biochemical Oxygen Demand" (BOD) specifically refers to the amount of oxygen consumed by microorganisms while they decompose organic matter in water. This measurement is critical in water treatment and environmental science because it provides insight into the level of organic pollution in a water body. Higher BOD values indicate a greater presence of biodegradable material, which can deplete oxygen levels and harm aquatic life if not properly managed.

Understanding BOD helps water treatment operators gauge the effectiveness of their treatment processes and assess the impact of discharges into receiving water bodies. Regular monitoring of BOD allows for better environmental protection and treatment operations, ensuring that adequate oxygen is available in the water for aquatic organisms.