While designing an HRSCC what is the detention time assumed for the detention hood?

What is the maximum head loss at which the filter should be cleaned?

For a high rate filter calculate the diameter of the filter required for a flow of water of 200 m3/h.

For rock type of roughing packing trickling filter what will be the hydraulic loading rate?

Splashing helps in improving aerobic conditions.

Which of these has been used as a medium for high rate filtration?

For rock type high filtration rate trickling filters what would be the BOD removal rate?

For rock type of packing in intermediate filtration trickling filters what is the hydraulic rate considered?