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
Correct Answer:
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Q5: Indicator bacteria for contaminated water are _.
A)
Q6: In the secondary phase of water treatment,
Q7: Which of the following statements regarding waterborne
Q8: Primary sewage treatment includes _.
A) sludge digesting
B)
Q9: Which chemical is used in both water
Q11: The difference between water purification and sewage
Q12: Potable water must be _.
A) absolutely clear
B)
Q13: Sewage sludge, the solid that remains after
Q14: Sewage treatment processes result in the production
Q15: The study of the practical use of
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