CHAPTER 1 – Introduction: Understanding the principles of treatment gives insight into the rationale of design criteria, their justification in relationship to performance, and the causes of performance variability. These principles derive from our knowledge and experience in several technical fields: water and wastewater treatment engineering, chemical engineering, aquatic chemistry, soil science, biological science, and others.

Some of the questions considered in Chapter 1

• Why does any of this matter?
• What are Volume and Performance Goals?
• How do they relate to MEP?
• What are Unit Processes and Unit Operations?
• How can Unit Processes and Operations be applied to Treatment Trains?
• How might the above concepts be applied to stormwater treatment?

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