A rapid sand filter has a loading rate of 8.00 m/h, surface dimension of 10m x 8m, an effective filtration rate of 7.70 m/h, and a production efficiency of 96 percent. A complete filter cycle duration in 52h and the filter rinses for 20 minutes at the start of each cycle.
(a) What flow rate (m^3/s) does the filter handle during production?
(b) What volume of water is needed for backwashing plus rinsing the filter in each filter cycle?