Write the role of the following in a water purification system:
$(a)$ Sedimentation tank
$(b)$ Loading tank
$(c)$ Chlorination tank

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(N/A) Sedimentation tank: This tank allows heavy,insoluble solid particles to settle down at the bottom due to gravity.
$(b)$ Loading tank: This tank is used to add coagulants like alum to the water,which helps in settling down fine suspended impurities that do not settle easily by sedimentation.
$(c)$ Chlorination tank: This tank is used to add chlorine to the water to kill harmful bacteria and microorganisms,making the water safe for consumption.

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