Environment & Ecology · Environmental Engineering
Consider the following statements regarding preliminary treatment in wastewater treatment: A. Grit chambers work on the principle of sedimentation under gravity. B. Skimming tanks remove greasy substances by introducing air bubbles. C. Fine screens have openings less than 20 mm. D. Coarse screens have openings of 2–5 mm. Which of the above statements are correct?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1A, B, C, and D
- 2B, C, and D only
- 3A, B, and C only✓
- 4A, C, and D only
Correct answer
A, B, and C only
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