Environment & Ecology · Environment
During municipal sewage treatment, biosolids (sewage sludge) are produced as a byproduct of which stage(s) of treatment?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1All stages: primary, secondary, and chemical treatments✓
- 2Tertiary (chemical/advanced) treatment only
- 3Secondary (biological) treatment only
- 4Primary treatment only
Correct answer
All stages: primary, secondary, and chemical treatments
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