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

Pre-treatment of beds is not necessary.

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

What is the void ratio of filter media?

Which of the following causes thickening of the biofilm?

Which type of bacteria are used in trickling filters?

While designing a clariflocculator what is the maximum detention time assumed for the flocculation zone?

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