What is the maximum reduced concentration of BOD obtained at the outlet of tricking filter?

What is the life of the media used?

What is the filter media made of?

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

Air is blown in the reverse direction during cleaning of filter beds.

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

What is the surface area of the plastic conventional packing material used in trickling filters as the packing medium?

Tube settlers are operated in which mode?