engineering recuitment GATE CE 2023-24 Test Series Environmental Engineering Water Treatment Filtration
Which of the following are the common problems associated with the operation of rapid sand filter ?
A. Mud ball formation
B. Build-up of emulsified grease
C. Air Binding
D. Gravel Moulding
Select the correct answer using the codes given below :
1
A and D only
2
A, B and D only
3
B, C and D only
4
A, B, C and D