A chemical widely used for coagulation in water treatment is?

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Multiple Choice

A chemical widely used for coagulation in water treatment is?

Explanation:
Coagulation in water treatment works by neutralizing the negative charges on tiny colloidal particles so they can come together and form larger flocs that settle out or can be filtered. Alum delivers aluminum hydroxide species in water that neutralize those charges and create a gelatinous floc, promoting rapid aggregation and removal of impurities. This action is most effective in a room-neutral to slightly acidic pH range, after which the flocs settle during sedimentation and are filtered out. Lime, on the other hand, is mainly used to adjust pH and softening; chlorine is a disinfectant, not a coagulant; and sodium hydroxide is used for pH control. So alum is the widely used coagulant.

Coagulation in water treatment works by neutralizing the negative charges on tiny colloidal particles so they can come together and form larger flocs that settle out or can be filtered. Alum delivers aluminum hydroxide species in water that neutralize those charges and create a gelatinous floc, promoting rapid aggregation and removal of impurities. This action is most effective in a room-neutral to slightly acidic pH range, after which the flocs settle during sedimentation and are filtered out. Lime, on the other hand, is mainly used to adjust pH and softening; chlorine is a disinfectant, not a coagulant; and sodium hydroxide is used for pH control. So alum is the widely used coagulant.

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