When filled which of the following material both nitrogen and BOD are removed?

What is the depth of the trickling filter?

What is the angle of slope in tube settlers?

What is the mathematical representation when many plates are used?

What is the porosity range during expansion of the filter bed?

What is the bed depth of the sand considered in such rapid filters?

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

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