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Question
The trickling filters are always provided between _____ to remove organic solids produced in filtration.
A.
Screening and primary sedimentation tank
B.
Intermittent filters and contact beds
C.
Intermittent filters and final settling tank
D.
Primary sedimentation tank and final settling tank
Answer ( Option D)

Primary sedimentation tank and final settling tank

Solution

The trickling filters are always provided between primary sedimentation tank and secondary sedimentation tank (final settling tank).

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