Calculations
Lamellar settling modules
Input data
Incoming flow
Water temperature
Number of modules (n)
Module length (a)
Module width (b)
Distance between modules (d)
Shape factor (Sc)
Angle
Output data
Critical sedimentation velocity
Water velocity
L1
L2
Description
Given the water temperature, the flow to be treated, the number, dimensions, and spacing of the modules, their slope relative to the horizontal, and the corresponding Sc coefficient, this calculation determines:
- The flow velocity between the modules.
- The critical sedimentation velocity of the flocs to be removed.
Lamellar Settling Modules
Input Data
| Parameter | Standard Units | Description |
|---|---|---|
| Incoming flow (Q) | L/s | Water flow entering the system |
| Water temperature (T) | °C | Temperature of the water in the system |
| Number of modules (n) | - | Total number of modules in the system |
| Module length (a) | m | Length of each lamellar module |
| Module width (b) | m | Width of each lamellar module |
| Distance between modules (d) | m | Spacing between lamellar modules |
| Shape factor (Sc) | - | Module shape coefficient |
| Angle | degrees | Slope of the modules relative to the horizontal |
Output Data
| Parameter | Standard Units | Description |
|---|---|---|
| Critical sedimentation velocity | cm/min | Minimum velocity required for floc sedimentation |
| Water velocity | cm/s | Flow velocity between the modules |
| L1 | m | Effective module length considering sedimentation effects |
| L2 | m | Length associated with sedimentation |
| Treated water flow | L/s | Flow of water after treatment |
References
- YAO, K. M. (1970). Theoretical study of high-rate sedimentation. Journal WPCF, v.42, n.2, p.218-28, Feb.