Question

A set of four rapid gravity filter bed system is to be designed for a town of 100000 population with daily supply of 250 litre/person/day. The rate of filtration through the filter bed is 5000 litre/hour/m2. If the length of filter bed is twice the width, determine the length (L) and width (W) of filter bed.

• A. L = 12.4 m; W = 6.2 m
• B. L = 10.2 m; W = 5.1 m
• C. L = 11.8 m; W = 5.9 m
• D. L = 8.6 m; W = 4.3 m

Answer 1

Answer: (B)