................................................................................................................
Waste Water - Flow Capacity
The Engineering
ToolBox
In sewage piping and pumping systems,
the fluid flow rate must be kept within certain limits to avoid operating
problems
In sewage piping and pumping systems, the flow velocity must
exceed certain limits to maintain trouble free operation and to avoid settling
and sedimentation of solids:
· for horizontal
wastewater pipe systems with solids the speed should exceed 3 ft/sec
· for wastewater water
system with organic solids the speed should exceed 2 ft/sec
On the other hand, the flow velocity should not exceed
certain limits to avoid potential wear and tear due to erosion and abrasion:
· the flow velocity in
high-grit sewage handling systems should not exceed 12 ft/sec
· the flow velocity in
sewage systems with low grit concentrations should not exceed 18 ft/sec
Flow rate capacities in US gal for sewage piping and pumping
systems within the limitations:
Flow Rate (US GPM)
|
||||
Pipe Dimension
(inches) |
||||
Minimum Velocity
|
Maximum Velocity
|
|||
2 ft/sec
(0.6 m/s) |
3 ft/sec
(0.9 m/s) |
12 ft/sec
(3.6 m/s) |
18 ft/sec
(5.4 m/s) |
|
3
|
45
|
65
|
270
|
400
|
4
|
80
|
120
|
480
|
700
|
6
|
180
|
260
|
1050
|
1600
|
8
|
300
|
500
|
1900
|
2800
|
10
|
500
|
750
|
3000
|
4400
|
12
|
700
|
1100
|
4300
|
6400
|
Note! - based on clean pipes. The friction coefficient may
vary with the pipe material.
About the ToolBox
We appreciate any comments and tips on
how to make The Engineering ToolBox a better information source. Please
contact us by email
No comments:
Post a Comment