Question

Which major step in wastewater treatment prepares the wastewater for treatment by physically removing the majority of solid material?

• A. Primary treatment
• B. Secondary treatment
• C. Tertiary treatment
• D. Chlorination of water

Answer 1

The correct option is A Primary treatment

In the primary wastewater treatment process, wastewater is temporarily held in a tank where heavier solids can settle to the bottom, while any lighter solids and scum float to the surface. This process involves in removing all the big stuff including solid wastes.