1.

A water treatment plant is designed to treat 1 m /s of raw water. It has 14 sand filters. Surface area of each filter is 50 m . What is the loading rate (in (m /days.m )) with two filters out of service for routine backwashing?

A. 214 m /day.m
B. 124 m /day.m
C. 174 m /day.m
D. 144 m /day.m
Answer» E.


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