What is the percentage of wash water?

While designing an HRSCC what is the velocity assumed?

For roughing type trickling filters what would be the BOD removal rate?

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

What is the TSS at the outlet of the Pressure Sand Filter (PSF)?

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

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

What is the void ratio of filter media?