What is the surface area of the River rock (Large) packing material used in trickling filters as the packing medium?

Calculate the volume of the flocculation zone for a clariflocculator for the following data. Flow: 500 m3/h.

Calculate the area of the tube settlers for the given data: Flow: 1500 mm3/h Surface loading rate: 7 m2/m3/h

Which of the following is not true in case of closing the top of the vessel?

While designing a blower for backwash for sand filters with air scouring what is the velocity considered?

What is the angle at which a tube settler is usually inclined at?

Which of these don’t require a flash mixer and a flocculator prior to it?

What is the mixed liquor?