A grit chamber of rectangular cross-section is to be designed to remove particles with diameter of 0.25 mm and specific gravity of 2.70. The terminal settling velocity of the particles is estimated as 2.5 cm/s. The chamber is having a width of 0.50 m and has to carry a peak wastewater flow of 9720 m³/d giving the depth of flow as 0.75 m. If a flow- through velocity of 0.3 m/'s has to be maintained using a proportional weir at the outlet end of the chamber, the minimum length of the chamber (in m, in integer) to remove 0.25 mm particles completely

Structural Analysis
6th Edition
ISBN:9781337630931
Author:KASSIMALI, Aslam.
Publisher:KASSIMALI, Aslam.
Chapter2: Loads On Structures
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A grit chamber of rectangular cross-section is to
be designed to remove particles with diameter of
0.25 mm and specific gravity of 2.70. The terminal
settling velocity of the particles is estimated as 2.5
cm/s. The chamber is having a width of 0.50 m
and has to carry a peak wastewater flow of 9720
m³/d giving the depth of flow as 0.75 m. If a flow-
through velocity of 0.3 m/'s has to be maintained
using a proportional weir at the outlet end of the
chamber, the minimum length of the chamber
(in m, in integer) to remove 0.25 mm particles
completely
Transcribed Image Text:A grit chamber of rectangular cross-section is to be designed to remove particles with diameter of 0.25 mm and specific gravity of 2.70. The terminal settling velocity of the particles is estimated as 2.5 cm/s. The chamber is having a width of 0.50 m and has to carry a peak wastewater flow of 9720 m³/d giving the depth of flow as 0.75 m. If a flow- through velocity of 0.3 m/'s has to be maintained using a proportional weir at the outlet end of the chamber, the minimum length of the chamber (in m, in integer) to remove 0.25 mm particles completely
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