QUESTION $3$

Aqueous slurry of $CaC{O}_3$ is to be filtered in a rotary drum filter with $35\%$ submergence. The available pressure drop is $65$kPa and the cycle time is $6$min. The slurry contains $220kg$ of solids per cubic meter of slurry. Calculate the filter area required to filter $35L$ slurry$/$minute$.$

A sample of the slurry had been previously tested with a leaf filter using the same filter cloth as is going to be used in the rotary drum filter and the following data was obtained.