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3 cards from this section. Quick, good the night before a test.
What does BOD stand for?
Think about how oxygen is related to water quality.
Why is it important to prevent air from entering the BOD bottle?
Consider what happens if oxygen escapes.
What does a high BOD level indicate?
Think about what high levels of organic material do in water.
True or False: BOD is a reliable measure of non-biodegradable organic matter.
Reflect on what BOD is designed to measure.
Given a water sample has an initial DO of 8 mg/L and a final DO after incubation of 2 mg/L, calculate the BOD. How would you interpret this value in terms of water quality?
Remember the formula for calculating BOD.
Consider a situation where you analyze two samples: one with biodegradable waste and one with non-biodegradable waste. Both samples show similar BOD levels. What conclusion can you draw from this?
Think about the implications of what non-biodegradable materials do in the testing process.
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