Recommendations
Flocculated water distribution under platesLamellar settling modulesFilters: washing flowFilters: washing volumeHead loss in the filter bed during washing

Tray floculator compartment

Input data

Temperature

Flow

Superficial area

Compartment depth

Distance between orifices

Number of trays

Number of orifices

Diameter of the orifices

Discharge coefficient

Output data

Detetion time

Distance between trays

Velocity gradient

Head loss of the compartment

Description

Given the water temperature, the flow to be treated, the superficial area and the depth of the compartment, the number of trays, the number and diameter of the orifices in each tray, the distance between them, and the discharge coefficient, this calculation determines:

  • Detention time
  • Distance between trays
  • Jet reach
  • Velocity gradient
  • Head loss of the compartment

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Inputs

Parameter
Default Units
Description
Temperature
°C
Water temperature
Flow
m³/s
Flow to be treated
Superficial area
m²
Superficial area of the compartment
Depth of the compartment
m
Depth of the compartment
Distance between orifices
m
Distance between orifices
Number of trays
-
Number of trays in the compartment
Number of orifices
-
Number of orifices per tray
Diameter of the orifices
mm
Diameter of the orifices
Discharge coefficient
-
Discharge coefficient

Outputs

Parameter
Default Units
Description
Detention time
s
Time required for retention
Distance between trays
m
Vertical distance between trays
Velocity gradient
s⁻¹
Velocity gradient in the compartment
Head loss of the compartment
m
Hydraulic head loss
Flow
L/s
Flow exiting the compartment

References

  • AZEVEDO NETTO, J. M. DE. Manual de hidráulica. 9. Ed. São Paulo, Blucher, 2015.