Environment & Ecology · Environmental Engineering
Arrange the following wastewater treatment process stages in the correct sequence from initial to advanced treatment: P. Activated sludge process, Trickling filter, Rotating Biological Contactor Q. Screening, Grit chamber, Skimming tank R. Sand filtration, Biological nutrient removal, Disinfection S. Primary sedimentation/clarifier
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1P → Q → R → S
- 2Q → S → P → R✓
- 3P → R → Q → S
- 4R → P → Q → S
Correct answer
Q → S → P → R
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