What is the effective size of sand used in rapid sand filters?

Calculate the flocculation volume for an HRSCC for the following data. Flow: 300 m3/h.

Which of these is the most efficient?

What is the head loss found in a rapid sand filter?

For rock type low filtration rate trickling filters what would be the organic loading rate assumed?

What is the void ratio of filter media?

In which type of trickling filter is nitrogen oxidized?

Filter cycle is interrupted for __