Question

9. Choose the correct sequence of water purification in water treatment plant:
(a) Sedimentation → Filtration → Disinfection
(b) Sedimentation → Disinfection → Filtration
(c) Filtration → Sedimentation → Disinfection
(d) Disinfection → Filtration → Sedimentation​

Answer 1

Answer:

(a) sedimentation>filteration>disinfection

Answer 2

The correct sequence of water purification in a water treatment plant is Sedimentation → Filtration → Disinfection

Explanation:

Sedimentation: The process of allowing particles suspended in water to separate under the influence of gravity is known as sedimentation. Sludge is the term for the sedimentary particles that form from the suspension during the water treatment process.

Filtration: Filtration is the process of removing solid particles from liquid or gaseous fluids by passing the fluid through a filter media while keeping the solid particles behind. The desired product could be either the fluid that has been cleared or the fluid that has had its solid particles removed.

Disinfection: Water treatment facilities may add one or more chemical disinfectants (such as chlorine, chloramine, or chlorine dioxide) after the water has been filtered to eliminate any lingering parasites, bacteria, or viruses.

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