Civil Engineering MCQAE Level Civil Engineering
Rapid sand filters generally require:
Environmental EngineeringEnvironmental EngineeringHARD
Choose the correct answer
A
no washing ever
B
only sunlight
C
no underdrain system
D
coagulation/flocculation pretreatment and backwashing
Correct Answer
D. coagulation/flocculation pretreatment and backwashing
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Rapid filters handle higher rates but require pretreatment and periodic backwashing through underdrains.
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