critical thinking question

Urban water class 

Unit 6

1. Plot the diagram of wastewater treatment concept. Explain the concept of biological wastewater treatment process.

 2. In the wastewater treatment process, why grit removal was required prior to biological removal?

3. What is the difference between primary and secondary treatment?

4. Why advanced treatment is needed?

Unit 8

1. What are green infrastructures and how they contribute to urban storm water control?

2. What are LIDs and how they serve as ways to improve urban water quality?

3. Why do we invest too much money on LID when there are still some straggling families?

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