Physics · Environmental Engineering
Which of the following statements is INCORRECT regarding a slow sand filter used in water treatment?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1The cleaning method used involves scraping off the top layer of sand
- 2The standard rate of filtration is 3000 to 6000 litres per hour per m2✓
- 3The loss of head ranges from an initial 15 cm to a final 100 cm
- 4Coagulation is generally not required before a slow sand filter
Correct answer
The standard rate of filtration is 3000 to 6000 litres per hour per m2
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