Question
Biology Question on Microbes in human welfare
Which of the following in sewage treatment removes suspended solids ?
A
Secondary treatment
B
Primary treatment
C
Sludge treatment
D
Tertiary treatment
Answer
Primary treatment
Explanation
Solution
The correct answer is B:Primary treatment
In the primary stage of sewage treatment, suspended particles are eliminated through a process known as physical treatment. This process involves actions like shredding, churning, screening, and sedimentation. Additionally, sequential filtration is employed to eliminate floating materials and large suspended solids.