For plastic type high filtration rate trickling filters what would be – McqOptions

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1.	For plastic type high filtration rate trickling filters what would be depth assumed while designing it?
A.	t1.8-2.4 m
B.	t<1.8 m
C.	t3-12.2 m
D.	t>12.2 m
Answer» D. t>12.2 m

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