2.3. Biochemical Oxygen Demand (BOD)

Try these first

1. 1.

   What does BOD stand for?

   Hint

   Think about what it measures in water.

2. 2.

   Is high BOD good or bad for a water body?

   Hint

   Relate this to the needs of aquatic life.

3. 3.

   What is the primary measurement of BOD?

   • Total solids in water
   • Oxygen consumed by bacteria
   • Nutrients available in water

   Hint

   Think about what microorganisms need to feed.

4. 4.

   True or False: High BOD levels can indicate poor water quality.

   • True
   • False

   Hint

   Consider the relationship of oxygen levels to life in water.

5. 5.

   Analyze a case where a factory discharges high levels of effluent into a river. Explain how you would assess water quality using BOD and COD measurements.

   Hint

   Think about the sequence and importance of information from both measurements.

6. 6.

   Critically evaluate the limitations of relying solely on BOD during wastewater treatment management in an industrial setting.

   Hint

   Consider the composition of industrial effluents.