Question

What is called for the removal of sand, gravel in the primary treatment of sewage treatment plant?

• A. Course screening
• B. Fine screening
• C. Grit removal
• D. Chlorination

Answer 1

Answer:

C. Grit removal

The removal of sand and gravel from the sewage in the primary treatment of sewage plant is known as grit removal. This is the third step in primary treatment after course screening and fine screening.