Question 10

(Multiple Choice)

Place the steps of the water puri?cation process in order.


A) Aeration, ?ltration and settling, chemical disinfection, release into a water reservoir
B) Chemical disinfection, aeration, ?ltration and settling, release into a water reservoir
C) Filtration and settling, chemical disinfection, aeration, release into a water reservoir
D) Release into a water reservoir, aeration, ?ltration and settling, chemical disinfection

Answer