Computer · Water Supply Engineering

Which one of the following statements is NOT correct with respect to the under-drainage system in a slow sand filter?

Verified Solution4 OptionsUpdated: October 2026👁️1 View

1The under-drainage system is provided to receive and deliver the filtered water.
2The under-drainage system allows backwashing for the cleaning of the filter.✓
3The lateral drains collect the filtered water and discharge it into the main drain.
4The under-drainage system consists of central drains and lateral drains.

Correct answer

The under-drainage system allows backwashing for the cleaning of the filter.

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