Practice Concentration Changes And Steady State Assumptions (1.5) - Transport of Pollutants - Gaussian Dispersion Model

Practice: Concentration Changes and Steady State Assumptions

Lesson 1.5Transport of Pollutants - Gaussian Dispersion Model

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9 questions

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4 cards from this section. Quick, good the night before a test.
Exercise
6 questions · about 4 min · pass mark 70%. Hints available.
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3 questions · about 2 min · pass mark 70%. Hints available.
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6 sample questions

Question 1.
What is mass balance in pollutant concentration modeling?
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Think about how substances enter and leave a system.
Question 2.
Define steady state in your own words.
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Consider what conditions might cause concentration to stay the same.
3Question 3.
What does mass balance involve in pollution modeling?
- Rate in = Rate out
- Accumulation = Rate + Reactions
- Zero emissions
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Think of it as a balance scale.
4Question 4.
True or False: Steady state conditions can still occur in unsteady environments.
- True
- False
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Consider the meaning of 'steady' versus 'unsteady'.
Question 5.
A factory releases a pollutant at a constant rate. Over time, how would you expect the concentration at a monitoring station to behave? Discuss conditions that would validate your steady state assumptions.
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Reflect on what changes can influence pollutant transport.
Question 6.
Given a pollutant's rate of flow, derive how the concentration will behave if the emissions suddenly increase by 50%. What does this imply about steady state?
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Consider what happens to balance when sources increase suddenly.

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