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Which of the following process is used to remove the colloidal particles from the effluent?

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+1 vote
in Environmental Engineering by (81.4k points)
Which of the following process is used to remove the colloidal particles from the effluent?

(a) Chemical precipitation

(b) Chemical coagulation

(c) Ion exchange

(d) Adsorption

This question was posed to me at a job interview.

My question comes from Types of Unit Operations topic in portion Unit Operations for Wastewater Treatment, Preliminary Treatment of Environmental Engineering

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Best answer
The correct answer is (b) Chemical coagulation

The explanation: Chemical coagulation is used to remove colloidal particles by the use of coagulants which increase the particle size and they settle down.

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