GATE CE · 2024 · CE2
Question 42: Water and Waste Water Quality and Treatment
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Question 42
CE2MCQ2 marksNeeds review
A hypothetical multimedia filter, consisting of anthracite particles (specific gravity: 1.50), silica sand (specific gravity: 2.60), and ilmenite sand (specific gravity: 4.20), is to be designed for treating water/wastewater. After backwashing, the particles should settle forming three layers: coarse anthracite particles at the top of the bed, silica sand in the middle, and small ilmenite sand particles at the bottom of the bed.
Assume
(i) Slow discrete settling (Stoke’s law is applicable)
(ii) All particles are spherical
(iii) Diameter of silica sand particles is 0.20 mm
The CORRECT option fulfilling the diameter requirements for this filter media is
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2024CE2
GATE CE 2024 · Paper 2
Civil Engineering · Original paper archive
- Section
- Section CE2
- Question type
- Multiple choice (MCQ)
- Marks
- 2 marks
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