QUESTION
Objective Question
In practice, flow velocity adopted for the design of a grit chamber is:
Answer
( Option B)
0.25 to 0.3 m/sec
Solution
Grit chambers are provided in the form of channels of longer length and smaller cross section area. Grit chamber
should not allow settlement of organic materials.
Velocity in the grit chamber should be such that organic matters do not settle. Or if it has settled, the velocity should be
sufficient to scour away the settled organic matter.
Flow velocity adopted for the design of grit chamber is 0.15 to 0.3 m/s.
Two channels are provided one for normal flow and other for peak flow, obviously used with normal flow.
