Horizontal Flow Grit Chamber
• It is difficult to maintain a 0.3 m/s (1 ft/s)
velocity over a wide range of flows.
• The submerged chain, flight equipment, and
bearings undergo excessive wear.
• Channels without effective flow control will
remove excessive amounts of organic
material that require grit washing and
classifying.
• Head loss is excessive (typically 30 to 40
percent of flow depth).
• High velocities may be generated at the
channel bottom with the use of proportional
weirs, leading to bottom scour.