Which of the following is true for screens and comminutors?

What is the approach velocity for grit bearing wastewaters?

What is the cleaning period for manual grit chambers?

What is the maximum allowable approach velocity for a bar screen at peak flow rates?

How many types of screens are present?

What is the size of the openings for a microscreen?

Which of these screens have a very large footprint?

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