Screen is the first unit operation in wastewater treatment plant.

What is the amount of air supplied for these grit chambers?

In drum type screen, which axis does the drum rotate?

At what angle generally a coarse manual screen is placed?

Usually while designing what is the range of depth of the aerated grit chamber assumed?

Which of these screens is used to remove secondary suspended solids?

What is the hydraulic loading rate for a microscreen?

Lower the velocity through the screen, the ____ is the amount of screening that would be removed.