The supernatant from the tank flows into a ____

Orifice placement is critical to the successful operation of the clarifier.

What is the specified minimum time for backwash of rapid filters?

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

For rock type low filtration rate tricking filters what would be the BOD removal rate?

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

At what pressure is the air blown during cleaning?

While designing a blower for backwash for dual media filters without air scouring what is the velocity considered?