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APES Unit 4 FRQ's LATEST 2022
- Exam (elaborations) • 3 pages • 2022
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Identify one component of the sewage that is targeted for removal by primary treatment and one 
component of the sewage that is targeted for removal by secondary treatment. - One component 
targeted for primary treatment is sludge (dirt, rocks, stuff that sinks). And one thing that is targeted by 
secondary treatment is scum (stuff that floats or dissolved). 
For each of the pollutants that you identified in part A, describe how the pollutant is removed in the 
treatment process. - Sludge is rem...
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